release 0.46

AnimatedIcon

.github/workflows/ci.yml

@@ -0,0 +1,142 @@
+# https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: CI
+
+on:
+  push:
+    branches:
+      - '*'
+    tags:
+      - '[0-9]*'
+  pull_request:
+    branches: 
+      - '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        # test against
+        # - Java 1.8 (minimum requirement)
+        # - Java 9 (first version with JPMS)
+        # - Java LTS versions (11, 17, ...)
+        # - lastest Java version(s)
+        java:
+          - 1.8
+          - 9
+          - 11  # LTS
+          - 14
+          - 15
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Java ${{ matrix.java }}
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+
+      - name: Cache Gradle wrapper
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-wrapper-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties') }}
+
+      - name: Cache Gradle cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
+          restore-keys: ${{ runner.os }}-gradle
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        if: matrix.java == '11'
+        with:
+          name: FlatLaf-build-artifacts
+          path: |
+            flatlaf-core/build/libs
+            flatlaf-demo/build/libs
+            flatlaf-extras/build/libs
+            flatlaf-intellij-themes/build/libs
+            flatlaf-jide-oss/build/libs
+            flatlaf-swingx/build/libs
+            !**/*-javadoc.jar
+            !**/*-sources.jar
+
+
+  snapshot:
+    runs-on: ubuntu-latest
+    needs: build
+    if: |
+      github.event_name == 'push' &&
+      github.ref == 'refs/heads/master' &&
+      github.repository == 'JFormDesigner/FlatLaf'
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - name: Cache Gradle wrapper
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-wrapper-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties') }}
+
+      - name: Cache Gradle cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
+          restore-keys: ${{ runner.os }}-gradle
+
+      - name: Publish snapshot to oss.jfrog.org
+        run: ./gradlew artifactoryPublish
+        env:
+          BINTRAY_USER: ${{ secrets.BINTRAY_USER }}
+          BINTRAY_KEY:  ${{ secrets.BINTRAY_KEY }}
+
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    if: |
+      github.event_name == 'push' &&
+      startsWith( github.ref, 'refs/tags/' ) &&
+      github.repository == 'JFormDesigner/FlatLaf'
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - name: Cache Gradle wrapper
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-wrapper-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties') }}
+
+      - name: Cache Gradle cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
+          restore-keys: ${{ runner.os }}-gradle
+
+      - name: Release a new stable version to bintray
+        run: ./gradlew bintrayUpload -Drelease=true
+        env:
+          BINTRAY_USER: ${{ secrets.BINTRAY_USER }}
+          BINTRAY_KEY:  ${{ secrets.BINTRAY_KEY }}

.travis.yml

@@ -1,39 +0,0 @@
-language: java
-sudo: false
-
-jdk:
-  - openjdk8
-  - openjdk9
-  - openjdk11
-  - openjdk14
-
-before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-cache:
-  directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-
-before_install:
-  - ./gradlew --version
-  - java -version
-
-stages:
-  - name: test
-  - name: snapshot
-    if: branch = master AND type IN (push) AND tag IS blank
-  - name: release
-    if: type IN (push) AND tag IS present
-
-jobs:
-  include:
-    # publish snapshot to oss.jfrog.org
-    - stage: snapshot
-      jdk: openjdk11
-      script: ./gradlew artifactoryPublish
-
-    # release a new stable version to bintray
-    - stage: release
-      jdk: openjdk11
-      script: ./gradlew bintrayUpload -Drelease=true

CHANGELOG.md

@@ -1,6 +1,282 @@
 FlatLaf Change Log
 ==================
 
+## 0.46
+
+#### New features and improvements
+
+- Slider and JIDE RangeSlider: Clicking on track now immediately moves the thumb
+  to mouse location and starts dragging the thumb. Use `UIManager.put(
+  "Slider.scrollOnTrackClick", true )` to enable old behavior that scrolls the
+  thumb when clicking on track.
+- Slider: Snap to ticks is now done while dragging the thumb. Use
+  `UIManager.put( "Slider.snapToTicksOnReleased", true )` to enable old behavior
+  that snaps to ticks on mouse released.
+- Extras: Added standard component extension classes that provides easy access
+  to FlatLaf specific client properties (see package
+  `com.formdev.flatlaf.extras.components`).
+- Extras: Renamed tri-state check box class from
+  `com.formdev.flatlaf.extras.TriStateCheckBox` to
+  `com.formdev.flatlaf.extras.components.FlatTriStateCheckBox`. Also
+  changed/improved API and added javadoc.
+- Extras: Renamed SVG utility class from `com.formdev.flatlaf.extras.SVGUtils`
+  to `com.formdev.flatlaf.extras.FlatSVGUtils`.
+- IntelliJ Themes: Added flag whether a theme is dark to
+  `FlatAllIJThemes.INFOS`. (issue #221)
+- JIDE Common Layer: Support `TristateCheckBox`.
+
+
+#### Fixed bugs
+
+- Slider: Fixed painting of colored track if `JSlider.inverted` is `true`.
+- Table and TableHeader: Fixed missing right vertical grid line if using table
+  as row header in scroll pane. (issues #152 and #46)
+- TableHeader: Fixed position of column separators in right-to-left component
+  orientation.
+- ToolTip: Fixed drop shadow for wide tooltips on Windows and Java 9+. (issue
+  #224)
+- SwingX: Fixed striping background highlighting color (e.g. alternating table
+  rows) in dark themes.
+- Fixed: If text antialiasing is disabled (in OS system settings or via
+  `-Dawt.useSystemAAFontSettings=off`), then some components still did use
+  antialiasing to render text (not-editable ComboBox, ProgressBar, Slider,
+  TabbedPane and multiline ToolTip). (issue #227)
+
+
+## 0.45
+
+#### New features and improvements
+
+- Slider: New design, added hover and pressed feedback and improved customizing.
+  (PR #214)
+- JIDE Common Layer: Support `RangeSlider`. (PR #209)
+- IntelliJ Themes:
+  - Added "Gradianto Nature Green" theme.
+  - Updated "Arc Dark", "Cyan", "Dark purple", "Gradianto", "Gray", "Gruvbox"
+    and "One Dark" themes.
+- TabbedPane: Support hiding tab area if it contains only one tab. (set client
+  property `JTabbedPane.hideTabAreaWithOneTab` to `true`)
+- MenuBar: Support different underline menu selection style UI defaults for
+  `MenuBar` and `MenuItem`. (PR #217; issue #216)
+
+
+#### Fixed bugs
+
+- Table: Do not paint last vertical grid line if auto-resize mode is not off.
+  (issue #46)
+- Table: Fixed unstable grid line thickness when scaled on HiDPI screens. (issue
+  #152)
+- TabbedPane: No longer add (internal) tab close button component as child to
+  `JTabbedPane`. (issue #219)
+- Custom window decorations: Title bar was not hidden if window is in
+  full-screen mode. (issue #212)
+
+
+## 0.44
+
+#### New features and improvements
+
+- TabbedPane: In scroll tab layout, added "Show Hidden Tabs" button to trailing
+  side of tab area. If pressed, it shows a popup menu that contains (partly)
+  hidden tabs and selecting one activates that tab. (PR #190; issue #40)
+- TabbedPane: Support forward/backward scroll arrow buttons on both sides of tab
+  area. Backward button on left side, forward button on right side. Not
+  applicable scroll buttons are hidden. (PR #211; issue #40)
+- TabbedPane: Support specifying default tab layout policy for all tabbed panes
+  in the application via UI value `TabbedPane.tabLayoutPolicy`. E.g. invoke
+  `UIManager.put( "TabbedPane.tabLayoutPolicy", "scroll" );` to use scroll
+  layout.
+- TabbedPane: Support tab scrolling with mouse wheel (in scroll tab layout). (PR
+  #187; issue #40)
+- TabbedPane: Repeat scrolling as long as scroll arrow buttons are pressed. (PR
+  #187; issue #40)
+- TabbedPane: Support adding custom components to left and right sides of tab
+  area. (set client property `JTabbedPane.leadingComponent` or
+  `JTabbedPane.trailingComponent` to a `java.awt.Component`) (PR #192; issue
+  #40)
+- TabbedPane: Support closable tabs. (PR #193; issues #31 and #40)
+- TabbedPane: Support minimum or maximum tab widths. (set client property
+  `JTabbedPane.minimumTabWidth` or `JTabbedPane.maximumTabWidth` to an integer)
+  (PR #199)
+- TabbedPane: Support alignment of tab area. (set client property
+  `JTabbedPane.tabAreaAlignment` to `"leading"`, `"trailing"`, `"center"` or
+  `"fill"`) (PR #199)
+- TabbedPane: Support horizontal alignment of tab title and icon. (set client
+  property `JTabbedPane.tabAlignment` to `SwingConstants.LEADING`,
+  `SwingConstants.TRAILING` or `SwingConstants.CENTER`)
+- TabbedPane: Support equal and compact tab width modes. (set client property
+  `JTabbedPane.tabWidthMode` to `"preferred"`, `"equal"` or `"compact"`) (PR
+  #199)
+- TabbedPane: Support left, right, top and bottom tab icon placement. (set
+  client property `JTabbedPane.tabIconPlacement` to `SwingConstants.LEADING`,
+  `SwingConstants.TRAILING`, `SwingConstants.TOP` or `SwingConstants.BOTTOM`)
+  (PR #199)
+- Support painting separator line between window title and content (use UI value
+  `TitlePane.borderColor`). (issue #184)
+- Extras: `FlatSVGIcon` now allows specifying icon width and height in
+  constructors. (issue #196)
+- SplitPane: Hide not applicable expand/collapse buttons. Added tooltips to
+  expand/collapse buttons. (issue #198)
+- SplitPane: Added grip to divider. Can be disabled with `UIManager.put(
+  "SplitPaneDivider.style", "plain" )`. (issue #179)
+
+
+#### Fixed bugs
+
+- Custom window decorations: Not visible menu bar is now ignored in layout.
+- Popups using `JToolTip` components did not respect their location. (issue
+  #188; regression in 0.42 in fix for #164)
+- IntelliJ Themes: Added suffix "(Material)" to names of all Material UI Lite
+  themes to avoid duplicate theme names. (issue #201)
+- Extras: `FlatSVGIcon` icons were not painted in disabled labels and disabled
+  tabs. (issue #205)
+
+
+## 0.43
+
+#### New features and improvements
+
+- TabbedPane: Made tabs separator color lighter in dark themes so that it is
+  easier to recognize the tabbed pane.
+- TabbedPane: Added top and bottom tab insets to avoid that large tab icons are
+  painted over active tab underline.
+- TabbedPane: Support hiding separator between tabs and content area (set client
+  property `JTabbedPane.showContentSeparator` to `false`).
+- CheckBoxMenuItem and RadioButtonMenuItem: Improved checkmark background colors
+  of selected menu items that have also an icon. This makes it is easier to
+  recognize selected menu items.
+- Windows: Made scaling compatible with Windows OS scaling, which distinguish
+  between "screen scaling" and "text scaling". (issue #175)
+
+#### Fixed bugs
+
+- ComboBox: If using own `JTextField` as editor, default text field border is
+  now removed to avoid duplicate border.
+- ComboBox: Limit popup width to screen width for very long items. (issue #182)
+- FileChooser: Fixed localizing special Windows folders (e.g. "Documents") and
+  enabled hiding known file extensions (if enabled in Windows Explorer). (issue
+  #178)
+- Spinner: Fixed `NullPointerException` in case that arrow buttons were removed
+  to create button-less spinner. (issue #181)
+
+
+## 0.42
+
+#### New features and improvements
+
+- Demo: Improved "SplitPane & Tabs" and "Data Components" tabs.
+- Demo: Menu items "File > Open" and "File > Save As" now show file choosers.
+- InternalFrame: Support draggable border for resizing frame inside of the
+  visible frame border. (issue #121)
+- `FlatUIDefaultsInspector` added (see [FlatLaf Extras](flatlaf-extras)). A
+  simple UI defaults inspector that shows a window with all UI defaults used in
+  current theme (look and feel).
+- Made disabled text color slightly lighter in dark themes for better
+  readability. (issue #174)
+- PasswordField: Support disabling Caps Lock warning icon. (issue #172)
+
+#### Fixed bugs
+
+- TextComponents: Fixed text color of disabled text components in dark themes.
+- Custom window decorations: Fixed wrong window placement when moving window to
+  another screen with different scaling factor. (issue #166)
+- Custom window decorations: Fixed wrong window bounds when resizing window to
+  another screen with different scaling factor. (issue #166)
+- Fixed occasional wrong positioning of heavy weight popups when using multiple
+  screens with different scaling factors. (issue #166)
+- ToolTip: Avoid that tooltip hides owner component. (issue #164)
+
+
+## 0.41
+
+#### New features and improvements
+
+- Added API to register packages or folders where FlatLaf searches for
+  application specific properties files with custom UI defaults (see
+  `FlatLaf.registerCustomDefaultsSource(...)` methods).
+- Demo: Show hint popups to guide users to some features of the FlatLaf Demo
+  application.
+- Extras: `FlatSVGIcon` now allows specifying `ClassLoader` that is used to load
+  SVG file. (issue #163)
+- Smoother transition from old to new theme, independent of UI complexity, when
+  using animated theme change (see [FlatLaf Extras](flatlaf-extras)).
+
+#### Fixed bugs
+
+- Button: "selected" state was not shown. (issue #161)
+- TextArea: Update background color property if enabled or editable state
+  changes in the same way as Swing does it for all other text components. (issue
+  #147)
+- Demo: Fixed restoring last used theme on startup. (regression in 0.39)
+- Custom window decorations: Fixed iconify, maximize and close icon colors if
+  window is inactive.
+- Custom window decorations: Fixed title pane background color in IntelliJ
+  themes if window is inactive.
+- Fixed sub-pixel text rendering in animated theme change (see
+  [FlatLaf Extras](flatlaf-extras)).
+
+#### Other Changes
+
+- Extras: Updated dependency
+  [svgSalamander](https://github.com/JFormDesigner/svgSalamander) to version
+  1.1.2.3.
+
+
+## 0.40
+
+#### New features
+
+- Table: Detect whether component is used in cell editor and automatically
+  disable round border style and reduce cell editor outer border width (used for
+  focus indicator) to zero. (issue #148)
+- ComboBox, Spinner and TextField: Support disabling round border style per
+  component, if globally enabled (set client property `JComponent.roundRect` to
+  `false`). (issue #148)
+
+#### Fixed bugs
+
+- Custom window decorations: Embedded menu bar did not always respond to mouse
+  events after adding menus and when running in JetBrains Runtime. (issue #151)
+- IntelliJ Themes: Fixed NPE in Solarized themes on scroll bar hover.
+
+
+## 0.39
+
+#### New features
+
+- Animated theme change (see [FlatLaf Extras](flatlaf-extras)). Used in Demo.
+- Demo: Added combo box above themes list to show only light or dark themes.
+- IntelliJ Themes:
+  - Added "Arc Dark", "Arc Dark - Orange", "Carbon" and "Cobalt 2" themes.
+  - Replaced "Solarized" themes with much better ones from 4lex4.
+  - Updated "Arc", "One Dark" and "Vuesion" themes.
+- ScrollPane: Enable/disable smooth scrolling per component if client property
+  "JScrollPane.smoothScrolling" is set to a `Boolean` on `JScrollPane`.
+- ScrollBar: Increased minimum thumb size on macOS and Linux from 8 to 18
+  pixels. On Windows, it is now 10 pixels. (issue #131)
+- Button: Support specifying button border width.
+- ComboBox: Changed maximum row count of popup list to 15 (was 20). Set UI value
+  `ComboBox.maximumRowCount` to any integer to use a different value.
+
+#### Fixed bugs
+
+- Custom window decorations: Fixed maximized window bounds when programmatically
+  maximizing window. E.g. restoring window state at startup. (issue #129)
+- InternalFrame: Title pane height was too small when iconify, maximize and
+  close buttons are hidden. (issue #132)
+- ToolTip: Do not show empty tooltip component if tooltip text is an empty
+  string. (issue #134)
+- ToolTip: Fixed truncated text in HTML formatted tooltip on HiDPI displays.
+  (issue #142)
+- ComboBox: Fixed width of popup, which was too small if popup is wider than
+  combo box and vertical scroll bar is visible. (issue #137)
+- MenuItem on macOS: Removed plus characters from accelerator text and made
+  modifier key order conform with macOS standard. (issue #141)
+- FileChooser: Fixed too small text field when renaming a file/directory in Flat
+  IntelliJ/Darcula themes. (issue #143)
+- IntelliJ Themes: Fixed text colors in ProgressBar. (issue #138)
+
+
 ## 0.38
 
 - Hide focus indicator when window is inactive.
@@ -9,7 +285,8 @@ FlatLaf Change Log
 - Custom window decorations: Center title if menu bar is embedded.
 - Custom window decorations: Cursor of components (e.g. TextField) was not
   changed. (issue #125)
-- CheckBox: Fixed colors in light IntelliJ themes. (issue #126)
+- CheckBox: Fixed colors in light IntelliJ themes. (issue #126; regression in
+  0.37)
 - InternalFrame: Use default icon in internal frames. (issue #122)
 
 

README.md

@@ -11,9 +11,9 @@ scales on **HiDPI** displays and runs on Java 8 or newer.
 The look is heavily inspired by **Darcula** and **IntelliJ** themes from
 IntelliJ IDEA 2019.2+ and uses almost the same colors and icons.
 
-![Flat Light Demo](images/FlatLightDemo.png)
+![Flat Light](images/flat_light.png)
 
-![Flat Dark Demo](images/FlatDarkDemo.png)
+![Flat Dark](images/flat_dark.png)
 
 
 IntelliJ Platform Themes
@@ -22,9 +22,7 @@ IntelliJ Platform Themes
 FlatLaf can use 3rd party themes created for IntelliJ Platform (see
 [IntelliJ Themes Pack](flatlaf-intellij-themes)):
 
-![Cyan Light Demo](images/CyanLightDemo.png)
-
-![Dark Purple Demo](images/DarkPurpleDemo.png)
+![IntelliJ Platform Themes](images/intellij_platform_themes.png)
 
 
 Demo
@@ -78,35 +76,76 @@ Addons
 Projects using FlatLaf
 ----------------------
 
-- [NetBeans](https://netbeans.apache.org/) 11.3
+- [Apache NetBeans](https://netbeans.apache.org/) 11.3 - IDE for Java, PHP, HTML
+  and much more
 - [jclasslib bytecode viewer](https://github.com/ingokegel/jclasslib) 5.5
 - [KeyStore Explorer](https://keystore-explorer.org/) 5.4.3
-- [OWASP Zed Attack Proxy (ZAP)](https://www.zaproxy.org/) (in weekly releases)
+- ![New](images/new.svg) [OWASP ZAP](https://www.zaproxy.org/) 2.10 - the worlds
+  most widely used web app scanner
+- ![New](images/new.svg) [JOSM](https://josm.openstreetmap.de/) - an extensible
+  editor for [OpenStreetMap](https://www.openstreetmap.org/) (requires FlatLaf
+  JOSM plugin)
+- [jAlbum](https://jalbum.net/) 21 (commercial) - creates photo album websites
 - [XMLmind XML Editor](https://www.xmlmind.com/xmleditor/) 9.3 (commercial)
-- [Total Validator](https://www.totalvalidator.com/) 15 (commercial)
-- [j-lawyer](https://github.com/jlawyerorg/j-lawyer-org)
+- [Total Validator](https://www.totalvalidator.com/) 15 (commercial) - checks
+  your website
+- [j-lawyer](https://github.com/jlawyerorg/j-lawyer-org) - Kanzleisoftware
 - [MegaMek](https://github.com/MegaMek/megamek) v0.47.4 and
-  [MekHQ](https://github.com/MegaMek/mekhq) v0.47.5
+  [MekHQ](https://github.com/MegaMek/mekhq) v0.47.5 - a turn-based sci-fi board
+  game
 - [GUIslice Builder](https://github.com/ImpulseAdventure/GUIslice-Builder)
-  0.13.b024
-- [Rest Suite](https://github.com/supanadit/restsuite)
-- [ControllerBuddy](https://github.com/bwRavencl/ControllerBuddy)
-- [SpringRemote](https://github.com/HaleyWang/SpringRemote)
+  0.13.b024 - GUI builder for
+  [GUIslice](https://github.com/ImpulseAdventure/GUIslice), a lightweight GUI
+  framework for embedded displays
+- [Rest Suite](https://github.com/supanadit/restsuite) - Rest API testing
+- [ControllerBuddy](https://github.com/bwRavencl/ControllerBuddy) - advanced
+  gamepad mapping software
+- [SpringRemote](https://github.com/HaleyWang/SpringRemote) - remote Linux SSH
+  connections manager
+- ![New](images/new.svg) [jEnTunnel](https://github.com/ggrandes/jentunnel) -
+  manage SSH Tunnels made easy
 - [mendelson AS2](https://sourceforge.net/projects/mec-as2/),
   [AS4](https://sourceforge.net/projects/mendelson-as4/) and
   [OFTP2](https://sourceforge.net/projects/mendelson-oftp2/) (open-source) and
   [mendelson AS2](https://mendelson-e-c.com/as2/),
   [AS4](https://mendelson-e-c.com/as4/) and
   [OFTP2](https://mendelson-e-c.com/oftp2) (commercial)
-- [MeteoInfo](https://github.com/meteoinfo/MeteoInfo) 2.2
-- [lsfusion platform](https://github.com/lsfusion/platform)
+- [MeteoInfo](https://github.com/meteoinfo/MeteoInfo) 2.2 - GIS and scientific
+  computation environment for meteorological community
+- [lsfusion platform](https://github.com/lsfusion/platform) - information
+  systems development platform
+- ![New](images/new.svg) [JPass](https://github.com/gaborbata/jpass) - password
+  manager with strong encryption
 - [Jes - Die Java-EÜR](https://www.jes-eur.de)
 - [Mapton](https://mapton.org/) 2.0
-  ([source code](https://github.com/trixon/mapton)) based on NetBeans platform
-- [Pseudo Assembler IDE](https://github.com/tomasz-herman/PseudoAssemblerIDE)
-- [Sound Analysis](https://github.com/tomasz-herman/SoundAnalysis)
-- [RemoteLight](https://github.com/Drumber/RemoteLight) - Multifunctional LED
-  Control Software
+  ([source code](https://github.com/trixon/mapton)) based on NetBeans platform -
+  some kind of map application
+- [Pseudo Assembler IDE](https://github.com/tomasz-herman/PseudoAssemblerIDE) -
+  IDE for Pseudo-Assembler
+- ![New](images/new.svg) [Linotte](https://github.com/cpc6128/LangageLinotte)
+  3.1 - French programming language created to learn programming
+- ![New](images/new.svg) [MEKA](https://github.com/Waikato/meka) 1.9.3 -
+  multi-label classifiers and evaluation procedures using the Weka machine
+  learning framework
+- ![New](images/new.svg) [Shutter Encoder](https://www.shutterencoder.com/) 14.2
+  ([source code](https://github.com/paulpacifico/shutter-encoder)) -
+  professional video converter and compression tool (screenshots show **old**
+  look)
+- [Sound Analysis](https://github.com/tomasz-herman/SoundAnalysis) - analyze
+  sound files in time or frequency domain
+- [RemoteLight](https://github.com/Drumber/RemoteLight) - multifunctional LED
+  control software
+- ![New](images/new.svg)
+  [ThunderFocus](https://github.com/marcocipriani01/ThunderFocus) -
+  Arduino-based telescope focuser
+- ![New](images/new.svg)
+  [Novel-Grabber](https://github.com/Flameish/Novel-Grabber) - download novels
+  from any webnovel and lightnovel site
+- ![New](images/new.svg) [lectureStudio](https://www.lecturestudio.org/)
+  4.3.1060 - digitize your lectures with ease
+- ![New](images/new.svg)
+  [Android Tool](https://github.com/fast-geek/Android-Tool) - makes popular adb
+  and fastboot commands easier to use
 - and more...
 
 

build.gradle.kts

@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-val releaseVersion = "0.38"
-val developmentVersion = "0.39-SNAPSHOT"
+val releaseVersion = "0.46"
+val developmentVersion = "0.47-SNAPSHOT"
 
 version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion
 
@@ -48,7 +48,7 @@ extra["bintray.dryRun"] = false
 
 // if true, uploaded artifacts are visible to all
 // if false, only visible to owner when logged into bintray
-extra["bintray.publish"] = true
+extra["bintray.publish"] = false
 
 
 allprojects {

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -19,19 +19,26 @@ package com.formdev.flatlaf;
 import java.awt.Color;
 import java.util.Objects;
 import javax.swing.JComponent;
+import javax.swing.SwingConstants;
 
 /**
  * @author Karl Tauber
  */
 public interface FlatClientProperties
 {
+	//---- JButton ------------------------------------------------------------
+
 	/**
 	 * Specifies type of a button.
 	 * <p>
 	 * <strong>Components</strong> {@link javax.swing.JButton} and {@link javax.swing.JToggleButton}<br>
 	 * <strong>Value type</strong> {@link java.lang.String}<br>
-	 * <strong>Allowed Values</strong> {@link #BUTTON_TYPE_SQUARE}, {@link #BUTTON_TYPE_ROUND_RECT},
-	 * {@link #BUTTON_TYPE_TAB}, {@link #BUTTON_TYPE_HELP} and {@link BUTTON_TYPE_TOOLBAR_BUTTON}
+	 * <strong>Allowed Values</strong>
+	 *     {@link #BUTTON_TYPE_SQUARE},
+	 *     {@link #BUTTON_TYPE_ROUND_RECT},
+	 *     {@link #BUTTON_TYPE_TAB},
+	 *     {@link #BUTTON_TYPE_HELP} or
+	 *     {@link BUTTON_TYPE_TOOLBAR_BUTTON}
 	 */
 	String BUTTON_TYPE = "JButton.buttonType";
 
@@ -99,17 +106,19 @@ public interface FlatClientProperties
 	/**
 	 * Specifies whether the button preferred size will be made square (quadratically).
 	 * <p>
-	 * <strong>Components</strong> {@link javax.swing.JButton} and {@link javax.swing.JToggleButton}
+	 * <strong>Components</strong> {@link javax.swing.JButton} and {@link javax.swing.JToggleButton}<br>
 	 * <strong>Value type</strong> {@link java.lang.Boolean}
 	 */
 	String SQUARE_SIZE = "JButton.squareSize";
 
+	//---- JComponent ---------------------------------------------------------
+
 	/**
 	 * Specifies minimum width of a component.
 	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JButton}, {@link javax.swing.JToggleButton},
 	 * {@link javax.swing.JComboBox}, {@link javax.swing.JSpinner} and {@link javax.swing.text.JTextComponent}<br>
-	 * <strong>Value type</strong> {@link java.lang.Integer}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}
 	 */
 	String MINIMUM_WIDTH = "JComponent.minimumWidth";
 
@@ -117,10 +126,19 @@ public interface FlatClientProperties
 	 * Specifies minimum height of a component.
 	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JButton} and {@link javax.swing.JToggleButton}<br>
-	 * <strong>Value type</strong> {@link java.lang.Integer}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}
 	 */
 	String MINIMUM_HEIGHT = "JComponent.minimumHeight";
 
+	/**
+	 * Paint the component with round edges.
+	 * <p>
+	 * <strong>Components</strong> {@link javax.swing.JComboBox}, {@link javax.swing.JSpinner},
+	 * {@link javax.swing.JTextField}, {@link javax.swing.JFormattedTextField} and {@link javax.swing.JPasswordField}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String COMPONENT_ROUND_RECT = "JComponent.roundRect";
+
 	/**
 	 * Specifies the outline color of the component border.
 	 * <p>
@@ -129,9 +147,12 @@ public interface FlatClientProperties
 	 * {@link javax.swing.JScrollPane}, {@link javax.swing.JSpinner},
 	 * {@link javax.swing.JTextField} and {@link javax.swing.JToggleButton}<br>
 	 * <strong>Value type</strong> {@link java.lang.String} or {@link java.awt.Color} or {@link java.awt.Color}[2]<br>
-	 * <strong>Allowed Values</strong> {@link #OUTLINE_ERROR}, {@link #OUTLINE_WARNING},
-	 * any color (type {@link java.awt.Color}) or an array of two colors (type {@link java.awt.Color}[2])
-	 * where the first color is for focused state and the second for unfocused state
+	 * <strong>Allowed Values</strong>
+	 *     {@link #OUTLINE_ERROR},
+	 *     {@link #OUTLINE_WARNING},
+	 *     any color (type {@link java.awt.Color}) or
+	 *     an array of two colors (type {@link java.awt.Color}[2]) where the first color
+	 *     is for focused state and the second for unfocused state
 	 */
 	String OUTLINE = "JComponent.outline";
 
@@ -149,14 +170,7 @@ public interface FlatClientProperties
 	 */
 	String OUTLINE_WARNING = "warning";
 
-	/**
-	 * Paint the component with round edges.
-	 * <p>
-	 * <strong>Components</strong> {@link javax.swing.JComboBox}, {@link javax.swing.JSpinner},
-	 * {@link javax.swing.JTextField}, {@link javax.swing.JFormattedTextField} and {@link javax.swing.JPasswordField}
-	 * <strong>Value type</strong> {@link java.lang.Boolean}
-	 */
-	String COMPONENT_ROUND_RECT = "JComponent.roundRect";
+	//---- Popup --------------------------------------------------------------
 
 	/**
 	 * Specifies whether a drop shadow is painted if the component is shown in a popup
@@ -167,6 +181,17 @@ public interface FlatClientProperties
 	 */
 	String POPUP_DROP_SHADOW_PAINTED = "Popup.dropShadowPainted";
 
+	/**
+	 * Specifies whether a heavy weight window should be used if the component is shown in a popup
+	 * or if the component is the owner of another component that is shown in a popup.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JComponent}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String POPUP_FORCE_HEAVY_WEIGHT = "Popup.forceHeavyWeight";
+
+	//---- JProgressBar -------------------------------------------------------
+
 	/**
 	 * Specifies whether the progress bar has always the larger height even if no string is painted.
 	 * <p>
@@ -183,6 +208,8 @@ public interface FlatClientProperties
 	 */
 	String PROGRESS_BAR_SQUARE = "JProgressBar.square";
 
+	//---- JRootPane ----------------------------------------------------------
+
 	/**
 	 * Specifies whether the menu bar is embedded into the title pane if custom
 	 * window decorations are enabled. Default is {@code true}.
@@ -192,6 +219,8 @@ public interface FlatClientProperties
 	 */
 	String MENU_BAR_EMBEDDED = "JRootPane.menuBarEmbedded";
 
+	//---- JScrollBar / JScrollPane -------------------------------------------
+
 	/**
 	 * Specifies whether the decrease/increase arrow buttons of a scrollbar are shown.
 	 * <p>
@@ -200,6 +229,16 @@ public interface FlatClientProperties
 	 */
 	String SCROLL_BAR_SHOW_BUTTONS = "JScrollBar.showButtons";
 
+	/**
+	 * Specifies whether the scroll pane uses smooth scrolling.
+	 * <p>
+	 * <strong>Component</strong> {{@link javax.swing.JScrollPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String SCROLL_PANE_SMOOTH_SCROLLING = "JScrollPane.smoothScrolling";
+
+	//---- JTabbedPane --------------------------------------------------------
+
 	/**
 	 * Specifies whether separators are shown between tabs.
 	 * <p>
@@ -208,6 +247,14 @@ public interface FlatClientProperties
 	 */
 	String TABBED_PANE_SHOW_TAB_SEPARATORS = "JTabbedPane.showTabSeparators";
 
+	/**
+	 * Specifies whether the separator between tabs area and content area should be shown.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String TABBED_PANE_SHOW_CONTENT_SEPARATOR = "JTabbedPane.showContentSeparator";
+
 	/**
 	 * Specifies whether a full border is painted around a tabbed pane.
 	 * <p>
@@ -216,6 +263,35 @@ public interface FlatClientProperties
 	 */
 	String TABBED_PANE_HAS_FULL_BORDER = "JTabbedPane.hasFullBorder";
 
+	/**
+	 * Specifies whether the tab area should be hidden if it contains only one tab.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String TABBED_PANE_HIDE_TAB_AREA_WITH_ONE_TAB = "JTabbedPane.hideTabAreaWithOneTab";
+
+	/**
+	 * Specifies the minimum width of a tab.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}
+	 */
+	String TABBED_PANE_MINIMUM_TAB_WIDTH = "JTabbedPane.minimumTabWidth";
+
+	/**
+	 * Specifies the maximum width of a tab.
+	 * <p>
+	 * Applied only if tab does not have a custom tab component
+	 * (see {@link javax.swing.JTabbedPane#setTabComponentAt(int, java.awt.Component)}).
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}
+	 */
+	String TABBED_PANE_MAXIMUM_TAB_WIDTH = "JTabbedPane.maximumTabWidth";
+
 	/**
 	 * Specifies the height of a tab.
 	 * <p>
@@ -224,14 +300,316 @@ public interface FlatClientProperties
 	 */
 	String TABBED_PANE_TAB_HEIGHT = "JTabbedPane.tabHeight";
 
+	/**
+	 * Specifies the insets of a tab.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.awt.Insets}
+	 */
+	String TABBED_PANE_TAB_INSETS = "JTabbedPane.tabInsets";
+
+	/**
+	 * Specifies the insets of the tab area.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.awt.Insets}
+	 */
+	String TABBED_PANE_TAB_AREA_INSETS = "JTabbedPane.tabAreaInsets";
+
+	/**
+	 * Specifies whether tabs are closable.
+	 * If set to {@code true} on a tabbed pane component, all tabs in that tabbed pane are closable.
+	 * To make individual tabs closable, set it to {@code true} on a tab content component.
+	 * <p>
+	 * Note that you have to specify a callback (see {@link #TABBED_PANE_TAB_CLOSABLE})
+	 * that is invoked when the user clicks a tab close button.
+	 * The callback is responsible for closing the tab.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @see #TABBED_PANE_TAB_CLOSE_CALLBACK
+	 */
+	String TABBED_PANE_TAB_CLOSABLE = "JTabbedPane.tabClosable";
+
+	/**
+	 * Specifies the tooltip text used for tab close buttons.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.lang.String}
+	 *
+	 * @see #TABBED_PANE_TAB_CLOSABLE
+	 */
+	String TABBED_PANE_TAB_CLOSE_TOOLTIPTEXT = "JTabbedPane.tabCloseToolTipText";
+
+	/**
+	 * Specifies the callback that is invoked when a tab close button is clicked.
+	 * The callback is responsible for closing the tab.
+	 * <p>
+	 * Either use a {@link java.util.function.IntConsumer} that receives the tab index as parameter:
+	 * <pre>{@code
+	 * myTabbedPane.putClientProperty( "JTabbedPane.tabCloseCallback",
+	 *     (IntConsumer) tabIndex -> {
+	 *         // close tab here
+	 *     } );
+	 * }</pre>
+	 * Or use a {@link java.util.function.BiConsumer}&lt;javax.swing.JTabbedPane, Integer&gt;
+	 * that receives the tabbed pane and the tab index as parameters:
+	 * <pre>{@code
+	 * myTabbedPane.putClientProperty( "JTabbedPane.tabCloseCallback",
+	 *     (BiConsumer<JTabbedPane, Integer>) (tabbedPane, tabIndex) -> {
+	 *         // close tab here
+	 *     } );
+	 * }</pre>
+	 * If you need to check whether a modifier key (e.g. Alt or Shift) was pressed
+	 * while the user clicked the tab close button, use {@link java.awt.EventQueue#getCurrentEvent}
+	 * to get current event, check whether it is a {@link java.awt.event.MouseEvent}
+	 * and invoke its methods. E.g.
+	 * <pre>{@code
+	 * AWTEvent e = EventQueue.getCurrentEvent();
+	 * boolean shift = (e instanceof MouseEvent) ? ((MouseEvent)e).isShiftDown() : false;
+	 * }</pre>
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.util.function.IntConsumer}
+	 * or {@link java.util.function.BiConsumer}&lt;javax.swing.JTabbedPane, Integer&gt;
+	 *
+	 * @see #TABBED_PANE_TAB_CLOSABLE
+	 */
+	String TABBED_PANE_TAB_CLOSE_CALLBACK = "JTabbedPane.tabCloseCallback";
+
+	/**
+	 * Specifies the display policy for the "more tabs" button,
+	 * which shows a popup menu with the (partly) hidden tabs.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link #TABBED_PANE_POLICY_NEVER} or
+	 *     {@link #TABBED_PANE_POLICY_AS_NEEDED}
+	 */
+	String TABBED_PANE_TABS_POPUP_POLICY = "JTabbedPane.tabsPopupPolicy";
+
+	/**
+	 * Specifies the display policy for the forward/backward scroll arrow buttons.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link #TABBED_PANE_POLICY_NEVER},
+	 *     {@link #TABBED_PANE_POLICY_AS_NEEDED} or
+	 *     {@link #TABBED_PANE_POLICY_AS_NEEDED_SINGLE}
+	 */
+	String TABBED_PANE_SCROLL_BUTTONS_POLICY = "JTabbedPane.scrollButtonsPolicy";
+
+	/**
+	 * Display never.
+	 *
+	 * @see #TABBED_PANE_TABS_POPUP_POLICY
+	 * @see #TABBED_PANE_SCROLL_BUTTONS_POLICY
+	 */
+	String TABBED_PANE_POLICY_NEVER = "never";
+
+	/**
+	 * Display only when needed.
+	 * <p>
+	 * If used for {@link #TABBED_PANE_SCROLL_BUTTONS_POLICY}, both scroll arrow buttons
+	 * are either shown or hidden. Buttons are disabled if scrolling in that
+	 * direction is not applicable.
+	 *
+	 * @see #TABBED_PANE_TABS_POPUP_POLICY
+	 * @see #TABBED_PANE_SCROLL_BUTTONS_POLICY
+	 */
+	String TABBED_PANE_POLICY_AS_NEEDED = "asNeeded";
+
+	/**
+	 * Display single button only when needed.
+	 * <p>
+	 * If scroll button placement is trailing, then this option is ignored
+	 * and both buttons are shown or hidden as needed.
+	 *
+	 * @see #TABBED_PANE_SCROLL_BUTTONS_POLICY
+	 */
+	String TABBED_PANE_POLICY_AS_NEEDED_SINGLE = "asNeededSingle";
+
+	/**
+	 * Specifies the placement of the forward/backward scroll arrow buttons.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link #TABBED_PANE_PLACEMENT_BOTH} or
+	 *     {@link #TABBED_PANE_PLACEMENT_TRAILING}
+	 */
+	String TABBED_PANE_SCROLL_BUTTONS_PLACEMENT = "JTabbedPane.scrollButtonsPlacement";
+
+	/**
+	 * The forward/backward scroll arrow buttons are placed on both sides of the tab area.
+	 * The backward scroll button at the left/top side.
+	 * The forward scroll button at the right/bottom side.
+	 *
+	 * @see #TABBED_PANE_SCROLL_BUTTONS_PLACEMENT
+	 */
+	String TABBED_PANE_PLACEMENT_BOTH = "both";
+
+	/**
+	 * The forward/backward scroll arrow buttons are placed on the trailing side of the tab area.
+	 *
+	 * @see #TABBED_PANE_SCROLL_BUTTONS_PLACEMENT
+	 */
+	String TABBED_PANE_PLACEMENT_TRAILING = "trailing";
+
+	/**
+	 * Specifies the alignment of the tab area.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer} or {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link SwingConstants#LEADING} (default)
+	 *     {@link SwingConstants#TRAILING},
+	 *     {@link SwingConstants#CENTER},
+	 *     {@link #TABBED_PANE_ALIGN_LEADING} (default),
+	 *     {@link #TABBED_PANE_ALIGN_TRAILING},
+	 *     {@link #TABBED_PANE_ALIGN_CENTER} or
+	 *     {@link #TABBED_PANE_ALIGN_FILL}
+	 */
+	String TABBED_PANE_TAB_AREA_ALIGNMENT = "JTabbedPane.tabAreaAlignment";
+
+	/**
+	 * Specifies the horizontal alignment of the tab title and icon.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}
+	 * or tab content components (see {@link javax.swing.JTabbedPane#setComponentAt(int, java.awt.Component)})<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer} or {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link SwingConstants#LEADING},
+	 *     {@link SwingConstants#TRAILING},
+	 *     {@link SwingConstants#CENTER} (default),
+	 *     {@link #TABBED_PANE_ALIGN_LEADING},
+	 *     {@link #TABBED_PANE_ALIGN_TRAILING} or
+	 *     {@link #TABBED_PANE_ALIGN_CENTER} (default)
+	 */
+	String TABBED_PANE_TAB_ALIGNMENT = "JTabbedPane.tabAlignment";
+
+	/**
+	 * Align to the leading edge.
+	 *
+	 * @see #TABBED_PANE_TAB_AREA_ALIGNMENT
+	 * @see #TABBED_PANE_TAB_ALIGNMENT
+	 */
+	String TABBED_PANE_ALIGN_LEADING = "leading";
+
+	/**
+	 * Align to the trailing edge.
+	 *
+	 * @see #TABBED_PANE_TAB_AREA_ALIGNMENT
+	 * @see #TABBED_PANE_TAB_ALIGNMENT
+	 */
+	String TABBED_PANE_ALIGN_TRAILING = "trailing";
+
+	/**
+	 * Align to center.
+	 *
+	 * @see #TABBED_PANE_TAB_AREA_ALIGNMENT
+	 * @see #TABBED_PANE_TAB_ALIGNMENT
+	 */
+	String TABBED_PANE_ALIGN_CENTER = "center";
+
+	/**
+	 * Stretch to fill all available space.
+	 *
+	 * @see #TABBED_PANE_TAB_AREA_ALIGNMENT
+	 */
+	String TABBED_PANE_ALIGN_FILL = "fill";
+
+	/**
+	 * Specifies how the tabs should be sized.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link #TABBED_PANE_TAB_WIDTH_MODE_PREFERRED} (default),
+	 *     {@link #TABBED_PANE_TAB_WIDTH_MODE_EQUAL} or
+	 *     {@link #TABBED_PANE_TAB_WIDTH_MODE_COMPACT}
+	 */
+	String TABBED_PANE_TAB_WIDTH_MODE = "JTabbedPane.tabWidthMode";
+
+	/**
+	 * Tab width is adjusted to tab icon and title.
+	 *
+	 * @see #TABBED_PANE_TAB_WIDTH_MODE
+	 */
+	String TABBED_PANE_TAB_WIDTH_MODE_PREFERRED = "preferred";
+
+	/**
+	 * All tabs in a tabbed pane has same width.
+	 *
+	 * @see #TABBED_PANE_TAB_WIDTH_MODE
+	 */
+	String TABBED_PANE_TAB_WIDTH_MODE_EQUAL = "equal";
+
+	/**
+	 * Unselected tabs are smaller because they show only the tab icon, but no tab title.
+	 * Selected tabs show both.
+	 *
+	 * @see #TABBED_PANE_TAB_WIDTH_MODE
+	 */
+	String TABBED_PANE_TAB_WIDTH_MODE_COMPACT = "compact";
+
+	/**
+	 * Specifies the tab icon placement (relative to tab title).
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link SwingConstants#LEADING} (default),
+	 *     {@link SwingConstants#TRAILING},
+	 *     {@link SwingConstants#TOP} or
+	 *     {@link SwingConstants#BOTTOM}
+	 */
+	String TABBED_PANE_TAB_ICON_PLACEMENT = "JTabbedPane.tabIconPlacement";
+
+	/**
+	 * Specifies a component that will be placed at the leading edge of the tabs area.
+	 * <p>
+	 * For top and bottom tab placement, the layed out component size will be
+	 * the preferred component width and the tab area height.<br>
+	 * For left and right tab placement, the layed out component size will be
+	 * the tab area width and the preferred component height.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.awt.Component}
+	 */
+	String TABBED_PANE_LEADING_COMPONENT = "JTabbedPane.leadingComponent";
+
+	/**
+	 * Specifies a component that will be placed at the trailing edge of the tabs area.
+	 * <p>
+	 * For top and bottom tab placement, the layed out component size will be
+	 * the available horizontal space (minimum is preferred component width) and the tab area height.<br>
+	 * For left and right tab placement, the layed out component size will be
+	 * the tab area width and the available vertical space (minimum is preferred component height).
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.awt.Component}
+	 */
+	String TABBED_PANE_TRAILING_COMPONENT = "JTabbedPane.trailingComponent";
+
+	//---- JTextField ---------------------------------------------------------
+
 	/**
 	 * Specifies whether all text is selected when the text component gains focus.
 	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JTextField} (and subclasses)<br>
 	 * <strong>Value type</strong> {@link java.lang.String}<br>
-	 * <strong>Allowed Values</strong> {@link #SELECT_ALL_ON_FOCUS_POLICY_NEVER},
-	 * {@link #SELECT_ALL_ON_FOCUS_POLICY_ONCE} (default) or
-	 * {@link #SELECT_ALL_ON_FOCUS_POLICY_ALWAYS}
+	 * <strong>Allowed Values</strong>
+	 *     {@link #SELECT_ALL_ON_FOCUS_POLICY_NEVER},
+	 *     {@link #SELECT_ALL_ON_FOCUS_POLICY_ONCE} (default) or
+	 *     {@link #SELECT_ALL_ON_FOCUS_POLICY_ALWAYS}
 	 */
 	String SELECT_ALL_ON_FOCUS_POLICY = "JTextField.selectAllOnFocusPolicy";
 
@@ -266,6 +644,8 @@ public interface FlatClientProperties
 	 */
 	String PLACEHOLDER_TEXT = "JTextField.placeholderText";
 
+	//---- JToggleButton ------------------------------------------------------
+
 	/**
 	 * Height of underline if toggle button type is {@link #BUTTON_TYPE_TAB}.
 	 * <p>
@@ -290,6 +670,8 @@ public interface FlatClientProperties
 	 */
 	String TAB_BUTTON_SELECTED_BACKGROUND = "JToggleButton.tab.selectedBackground";
 
+	//---- helper methods -----------------------------------------------------
+
 	/**
 	 * Checks whether a client property of a component has the given value.
 	 */
@@ -306,6 +688,15 @@ public interface FlatClientProperties
 		return (value instanceof Boolean) ? (boolean) value : defaultValue;
 	}
 
+	/**
+	 * Checks whether a client property of a component is a {@link Boolean} and returns its value.
+	 * If the client property is not set, or not a {@link Boolean}, defaultValue is returned.
+	 */
+	static Boolean clientPropertyBooleanStrict( JComponent c, String key, Boolean defaultValue ) {
+		Object value = c.getClientProperty( key );
+		return (value instanceof Boolean) ? (Boolean) value : defaultValue;
+	}
+
 	/**
 	 * Checks whether a client property of a component is an integer and returns its value.
 	 * If the client property is not set, or not an integer, defaultValue is returned.
@@ -323,14 +714,4 @@ public interface FlatClientProperties
 		Object value = c.getClientProperty( key );
 		return (value instanceof Color) ? (Color) value : defaultValue;
 	}
-
-	static int clientPropertyChoice( JComponent c, String key, String... choices ) {
-		Object value = c.getClientProperty( key );
-		for( int i = 0; i < choices.length; i++ ) {
-			if( choices[i].equals( value ) )
-				return i;
-
-		}
-		return -1;
-	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatDarculaLaf.java

@@ -18,21 +18,28 @@ package com.formdev.flatlaf;
 
 /**
  * A Flat LaF that has a dark color scheme and looks like Darcula LaF.
- *
- * The UI defaults are loaded from FlatDarculaLaf.properties, FlatDarkLaf.properties and FlatLaf.properties
+ * <p>
+ * The UI defaults are loaded from {@code FlatDarculaLaf.properties},
+ * {@code FlatDarkLaf.properties} and {@code FlatLaf.properties}.
  *
  * @author Karl Tauber
  */
 public class FlatDarculaLaf
 	extends FlatDarkLaf
 {
-	public static boolean install( ) {
+	public static final String NAME = "FlatLaf Darcula";
+
+	public static boolean install() {
 		return install( new FlatDarculaLaf() );
 	}
 
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatDarculaLaf.class );
+	}
+
 	@Override
 	public String getName() {
-		return "FlatLaf Darcula";
+		return NAME;
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatDarkLaf.java

@@ -16,23 +16,41 @@
 
 package com.formdev.flatlaf;
 
+import javax.swing.UIManager;
+
 /**
  * A Flat LaF that has a dark color scheme.
- *
- * The UI defaults are loaded from FlatDarkLaf.properties and FlatLaf.properties
+ * <p>
+ * The UI defaults are loaded from {@code FlatDarkLaf.properties} and {@code FlatLaf.properties}.
  *
  * @author Karl Tauber
  */
 public class FlatDarkLaf
 	extends FlatLaf
 {
-	public static boolean install( ) {
+	public static final String NAME = "FlatLaf Dark";
+
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean install() {
 		return install( new FlatDarkLaf() );
 	}
 
+	/**
+	 * Adds this look and feel to the set of available look and feels.
+	 * <p>
+	 * Useful if your application uses {@link UIManager#getInstalledLookAndFeels()}
+	 * to query available LaFs and display them to the user in a combobox.
+	 */
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatDarkLaf.class );
+	}
+
 	@Override
 	public String getName() {
-		return "FlatLaf Dark";
+		return NAME;
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatInputMaps.java

@@ -22,9 +22,11 @@ import javax.swing.KeyStroke;
 import javax.swing.LookAndFeel;
 import javax.swing.UIDefaults;
 import javax.swing.UIDefaults.LazyValue;
+import javax.swing.UIManager;
 import javax.swing.plaf.InputMapUIResource;
 import com.formdev.flatlaf.util.SystemInfo;
 import static javax.swing.text.DefaultEditorKit.*;
+import java.util.function.BooleanSupplier;
 
 /**
  * @author Karl Tauber
@@ -35,7 +37,7 @@ class FlatInputMaps
 		initBasicInputMaps( defaults );
 		initTextComponentInputMaps( defaults );
 
-		if( SystemInfo.IS_MAC )
+		if( SystemInfo.isMacOS )
 			initMacInputMaps( defaults );
 	}
 
@@ -59,7 +61,7 @@ class FlatInputMaps
 			mac( "alt KP_DOWN", null ), "togglePopup"
 		);
 
-		if( !SystemInfo.IS_MAC ) {
+		if( !SystemInfo.isMacOS ) {
 			modifyInputMap( defaults, "FileChooser.ancestorInputMap",
 				"F2", "editFileName",
 				"BACK_SPACE", "Go Up"
@@ -81,8 +83,11 @@ class FlatInputMaps
 			"shift ctrl TAB", "navigatePrevious"
 		);
 
-		modifyInputMap( defaults, "Table.ancestorInputMap",
-			// swap to make it consistent with List and Tree
+		// swap Home/End with Ctrl+Home/End to make it consistent with List and Tree
+		modifyInputMap( () -> {
+				return UIManager.getBoolean( "Table.consistentHomeEndKeyBehavior" );
+			},
+			defaults, "Table.ancestorInputMap",
 			"HOME", "selectFirstRow",
 			"END", "selectLastRow",
 			"shift HOME", "selectFirstRowExtendSelection",
@@ -93,7 +98,7 @@ class FlatInputMaps
 			mac( "shift ctrl END", null ), "selectLastColumnExtendSelection"
 		);
 
-		if( !SystemInfo.IS_MAC ) {
+		if( !SystemInfo.isMacOS ) {
 			modifyInputMap( defaults, "Tree.focusInputMap",
 				"ADD", "expand",
 				"SUBTRACT", "collapse"
@@ -164,7 +169,7 @@ class FlatInputMaps
 			"control shift O", "toggle-componentOrientation", // DefaultEditorKit.toggleComponentOrientation
 		};
 
-		Object[] macCommonTextComponentBindings = SystemInfo.IS_MAC ? new Object[] {
+		Object[] macCommonTextComponentBindings = SystemInfo.isMacOS ? new Object[] {
 			// move caret one character (without selecting text)
 			"ctrl B", backwardAction,
 			"ctrl F", forwardAction,
@@ -211,7 +216,7 @@ class FlatInputMaps
 			"ENTER", JTextField.notifyAction,
 		};
 
-		Object[] macSingleLineTextComponentBindings = SystemInfo.IS_MAC ? new Object[] {
+		Object[] macSingleLineTextComponentBindings = SystemInfo.isMacOS ? new Object[] {
 			// move caret to line begin/end (without selecting text)
 			"UP", beginLineAction,
 			"DOWN", endLineAction,
@@ -289,7 +294,7 @@ class FlatInputMaps
 			mac( "ctrl SPACE", "meta SPACE" ), "activate-link-action",
 		};
 
-		Object[] macMultiLineTextComponentBindings = SystemInfo.IS_MAC ? new Object[] {
+		Object[] macMultiLineTextComponentBindings = SystemInfo.isMacOS ? new Object[] {
 			// move caret one line (without selecting text)
 			"ctrl N", downAction,
 			"ctrl P", upAction,
@@ -574,12 +579,16 @@ class FlatInputMaps
 	}
 
 	private static void modifyInputMap( UIDefaults defaults, String key, Object... bindings ) {
-		// Note: not using `defaults.get(key)` here because this would resolve the lazy value
-		defaults.put( key, new LazyModifyInputMap( defaults.remove( key ), bindings ) );
+		modifyInputMap( null, defaults, key, bindings );
+	}
+
+	private static void modifyInputMap( BooleanSupplier condition, UIDefaults defaults, String key, Object... bindings ) {
+		// Note: not using `defaults.get(key)` here because this would resolve a lazy value
+		defaults.put( key, new LazyModifyInputMap( condition, defaults.remove( key ), bindings ) );
 	}
 
 	private static <T> T mac( T value, T macValue ) {
-		return SystemInfo.IS_MAC ? macValue : value;
+		return SystemInfo.isMacOS ? macValue : value;
 	}
 
 	//---- class LazyInputMapEx -----------------------------------------------
@@ -614,10 +623,12 @@ class FlatInputMaps
 	private static class LazyModifyInputMap
 		implements LazyValue
 	{
+		private final BooleanSupplier condition;
 		private final Object baseInputMap;
 		private final Object[] bindings;
 
-		LazyModifyInputMap( Object baseInputMap, Object[] bindings ) {
+		LazyModifyInputMap( BooleanSupplier condition, Object baseInputMap, Object[] bindings ) {
+			this.condition = condition;
 			this.baseInputMap = baseInputMap;
 			this.bindings = bindings;
 		}
@@ -629,6 +640,9 @@ class FlatInputMaps
 				? (InputMap) ((LazyValue)baseInputMap).createValue( table )
 				: (InputMap) baseInputMap;
 
+			if( condition != null && !condition.getAsBoolean() )
+				return inputMap;
+
 			// modify input map (replace or remove)
 			for( int i = 0; i < bindings.length; i += 2 ) {
 				KeyStroke keyStroke = KeyStroke.getKeyStroke( (String) bindings[i] );

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatIntelliJLaf.java

@@ -18,21 +18,28 @@ package com.formdev.flatlaf;
 
 /**
  * A Flat LaF that has a light color scheme and looks like IntelliJ LaF.
- *
- * The UI defaults are loaded from FlatIntelliJLaf.properties, FlatLightLaf.properties and FlatLaf.properties
+ * <p>
+ * The UI defaults are loaded from {@code FlatIntelliJLaf.properties},
+ * {@code FlatLightLaf.properties} and {@code FlatLaf.properties}.
  *
  * @author Karl Tauber
  */
 public class FlatIntelliJLaf
 	extends FlatLightLaf
 {
-	public static boolean install( ) {
+	public static final String NAME = "FlatLaf IntelliJ";
+
+	public static boolean install() {
 		return install( new FlatIntelliJLaf() );
 	}
 
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatIntelliJLaf.class );
+	}
+
 	@Override
 	public String getName() {
-		return "FlatLaf IntelliJ";
+		return NAME;
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

@@ -29,6 +29,7 @@ import java.awt.image.ImageFilter;
 import java.awt.image.ImageProducer;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
+import java.io.File;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
@@ -49,9 +50,9 @@ import javax.swing.LookAndFeel;
 import javax.swing.PopupFactory;
 import javax.swing.SwingUtilities;
 import javax.swing.UIDefaults;
+import javax.swing.UIDefaults.ActiveValue;
 import javax.swing.UIManager;
 import javax.swing.UnsupportedLookAndFeelException;
-import javax.swing.UIDefaults.ActiveValue;
 import javax.swing.plaf.ColorUIResource;
 import javax.swing.plaf.FontUIResource;
 import javax.swing.plaf.UIResource;
@@ -76,6 +77,8 @@ public abstract class FlatLaf
 	static final Logger LOG = Logger.getLogger( FlatLaf.class.getName() );
 	private static final String DESKTOPFONTHINTS = "awt.font.desktophints";
 
+	private static List<Object> customDefaultsSources;
+
 	private String desktopPropertyName;
 	private String desktopPropertyName2;
 	private PropertyChangeListener desktopPropertyListener;
@@ -91,6 +94,10 @@ public abstract class FlatLaf
 	private Boolean oldFrameWindowDecorated;
 	private Boolean oldDialogWindowDecorated;
 
+	/**
+	 * Sets the application look and feel to the given LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
 	public static boolean install( LookAndFeel newLookAndFeel ) {
 		try {
 			UIManager.setLookAndFeel( newLookAndFeel );
@@ -101,6 +108,16 @@ public abstract class FlatLaf
 		}
 	}
 
+	/**
+	 * Adds the given look and feel to the set of available look and feels.
+	 * <p>
+	 * Useful if your application uses {@link UIManager#getInstalledLookAndFeels()}
+	 * to query available LaFs and display them to the user in a combobox.
+	 */
+	public static void installLafInfo( String lafName, Class<? extends LookAndFeel> lafClass ) {
+		UIManager.installLookAndFeel( new UIManager.LookAndFeelInfo( lafName, lafClass.getName() ) );
+	}
+
 	/**
 	 * Returns the look and feel identifier.
 	 * <p>
@@ -147,12 +164,12 @@ public abstract class FlatLaf
 	 */
 	@Override
 	public boolean getSupportsWindowDecorations() {
-		if( SystemInfo.IS_JETBRAINS_JVM_11_OR_LATER &&
-			SystemInfo.IS_WINDOWS_10_OR_LATER &&
+		if( SystemInfo.isJetBrainsJVM_11_orLater &&
+			SystemInfo.isWindows_10_orLater &&
 			JBRCustomDecorations.isSupported() )
 		  return false;
 
-		return SystemInfo.IS_WINDOWS_10_OR_LATER;
+		return SystemInfo.isWindows_10_orLater;
 	}
 
 	@Override
@@ -167,6 +184,9 @@ public abstract class FlatLaf
 
 	@Override
 	public Icon getDisabledIcon( JComponent component, Icon icon ) {
+		if( icon instanceof DisabledIconProvider )
+			return ((DisabledIconProvider)icon).getDisabledIcon();
+
 		if( icon instanceof ImageIcon ) {
 			Object grayFilter = UIManager.get( "Component.grayFilter" );
 			ImageFilter filter = (grayFilter instanceof ImageFilter)
@@ -187,7 +207,7 @@ public abstract class FlatLaf
 
 	@Override
 	public void initialize() {
-		if( SystemInfo.IS_MAC )
+		if( SystemInfo.isMacOS )
 			initializeAqua();
 
 		super.initialize();
@@ -201,11 +221,11 @@ public abstract class FlatLaf
 		mnemonicHandler.install();
 
 		// listen to desktop property changes to update UI if system font or scaling changes
-		if( SystemInfo.IS_WINDOWS ) {
+		if( SystemInfo.isWindows ) {
 			// Windows 10 allows increasing font size independent of scaling:
 			//   Settings > Ease of Access > Display > Make text bigger (100% - 225%)
 			desktopPropertyName = "win.messagebox.font";
-		} else if( SystemInfo.IS_LINUX ) {
+		} else if( SystemInfo.isLinux ) {
 			// Linux/Gnome allows changing font in "Tweaks" app
 			desktopPropertyName = "gnome.Gtk/FontName";
 
@@ -315,7 +335,7 @@ public abstract class FlatLaf
 		String aquaLafClassName = "com.apple.laf.AquaLookAndFeel";
 		BasicLookAndFeel aquaLaf;
 		try {
-			if( SystemInfo.IS_JAVA_9_OR_LATER ) {
+			if( SystemInfo.isJava_9_orLater ) {
 				Method m = UIManager.class.getMethod( "createLookAndFeel", String.class );
 				aquaLaf = (BasicLookAndFeel) m.invoke( null, "Mac OS X" );
 			} else
@@ -341,6 +361,10 @@ public abstract class FlatLaf
 	public UIDefaults getDefaults() {
 		UIDefaults defaults = super.getDefaults();
 
+		// add flag that indicates whether the LaF is light or dark
+		// (can be queried without using FlatLaf API)
+		defaults.put( "laf.dark", isDark() );
+
 		// add resource bundle for localized texts
 		defaults.addResourceBundle( "com.formdev.flatlaf.resources.Bundle" );
 
@@ -391,7 +415,7 @@ public abstract class FlatLaf
 			UIDefaultsLoader.loadDefaultsFromProperties( getClass(), addons, getAdditionalDefaults(), isDark(), defaults );
 
 		// use Aqua MenuBarUI if Mac screen menubar is enabled
-		if( SystemInfo.IS_MAC && Boolean.getBoolean( "apple.laf.useScreenMenuBar" ) ) {
+		if( SystemInfo.isMacOS && Boolean.getBoolean( "apple.laf.useScreenMenuBar" ) ) {
 			defaults.put( "MenuBarUI", "com.apple.laf.AquaMenuBarUI" );
 
 			// add defaults necessary for AquaMenuBarUI
@@ -435,17 +459,17 @@ public abstract class FlatLaf
 	private void initFonts( UIDefaults defaults ) {
 		FontUIResource uiFont = null;
 
-		if( SystemInfo.IS_WINDOWS ) {
+		if( SystemInfo.isWindows ) {
 			Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.messagebox.font" );
 			if( winFont != null )
 				uiFont = createCompositeFont( winFont.getFamily(), winFont.getStyle(), winFont.getSize() );
 
-		} else if( SystemInfo.IS_MAC ) {
+		} else if( SystemInfo.isMacOS ) {
 			String fontName;
-			if( SystemInfo.IS_MAC_OS_10_15_CATALINA_OR_LATER ) {
+			if( SystemInfo.isMacOS_10_15_Catalina_orLater ) {
 				// use Helvetica Neue font
 				fontName = "Helvetica Neue";
-			} else if( SystemInfo.IS_MAC_OS_10_11_EL_CAPITAN_OR_LATER ) {
+			} else if( SystemInfo.isMacOS_10_11_ElCapitan_orLater ) {
 				// use San Francisco Text font
 				fontName = ".SF NS Text";
 			} else {
@@ -455,14 +479,16 @@ public abstract class FlatLaf
 
 			uiFont = createCompositeFont( fontName, Font.PLAIN, 13 );
 
-		} else if( SystemInfo.IS_LINUX ) {
+		} else if( SystemInfo.isLinux ) {
 			Font font = LinuxFontPolicy.getFont();
 			uiFont = (font instanceof FontUIResource) ? (FontUIResource) font : new FontUIResource( font );
 		}
 
+		// fallback
 		if( uiFont == null )
 			uiFont = createCompositeFont( Font.SANS_SERIF, Font.PLAIN, 12 );
 
+		// increase font size if system property "flatlaf.uiScale" is set
 		uiFont = UIScale.applyCustomScaleFactor( uiFont );
 
 		// use active value for all fonts to allow changing fonts in all components
@@ -515,7 +541,7 @@ public abstract class FlatLaf
 	}
 
 	private void putAATextInfo( UIDefaults defaults ) {
-		if( SystemInfo.IS_JAVA_9_OR_LATER ) {
+		if( SystemInfo.isJava_9_orLater ) {
 			Object desktopHints = Toolkit.getDefaultToolkit().getDesktopProperty( DESKTOPFONTHINTS );
 			if( desktopHints instanceof Map ) {
 				@SuppressWarnings( "unchecked" )
@@ -552,6 +578,87 @@ public abstract class FlatLaf
 			defaults.put( key, value );
 	}
 
+	static List<Object> getCustomDefaultsSources() {
+		return customDefaultsSources;
+	}
+
+	/**
+	 * Registers a package where FlatLaf searches for properties files with custom UI defaults.
+	 * <p>
+	 * This can be used to specify application specific UI defaults that override UI values
+	 * of existing themes or to define own UI values used in custom controls.
+	 * <p>
+	 * There may be multiple properties files in that package for multiple themes.
+	 * The properties file name must match the used theme class names.
+	 * E.g. {@code FlatLightLaf.properties} for class {@link FlatLightLaf}
+	 * or {@code FlatDarkLaf.properties} for class {@link FlatDarkLaf}.
+	 * {@code FlatLaf.properties} is loaded first for all themes.
+	 * <p>
+	 * These properties files are loaded after theme and addon properties files
+	 * and can therefore override all UI defaults.
+	 * <p>
+	 * Invoke this method before setting the look and feel.
+	 *
+	 * @param packageName a package name (e.g. "com.myapp.resources")
+	 */
+	public static void registerCustomDefaultsSource( String packageName ) {
+		registerCustomDefaultsSource( packageName, null );
+	}
+
+	public static void unregisterCustomDefaultsSource( String packageName ) {
+		unregisterCustomDefaultsSource( packageName, null );
+	}
+
+	/**
+	 * Registers a package where FlatLaf searches for properties files with custom UI defaults.
+	 * <p>
+	 * See {@link #registerCustomDefaultsSource(String)} for details.
+	 *
+	 * @param packageName a package name (e.g. "com.myapp.resources")
+	 * @param classLoader a class loader used to find resources, or {@code null}
+	 */
+	public static void registerCustomDefaultsSource( String packageName, ClassLoader classLoader ) {
+		if( customDefaultsSources == null )
+			customDefaultsSources = new ArrayList<>();
+		customDefaultsSources.add( packageName );
+		customDefaultsSources.add( classLoader );
+	}
+
+	public static void unregisterCustomDefaultsSource( String packageName, ClassLoader classLoader ) {
+		if( customDefaultsSources == null )
+			return;
+
+		int size = customDefaultsSources.size();
+		for( int i = 0; i < size - 1; i++ ) {
+			Object source = customDefaultsSources.get( i );
+			if( packageName.equals( source ) && customDefaultsSources.get( i + 1 ) == classLoader ) {
+				customDefaultsSources.remove( i + 1 );
+				customDefaultsSources.remove( i );
+				break;
+			}
+		}
+	}
+
+	/**
+	 * Registers a folder where FlatLaf searches for properties files with custom UI defaults.
+	 * <p>
+	 * See {@link #registerCustomDefaultsSource(String)} for details.
+	 *
+	 * @param folder a folder
+	 */
+	public static void registerCustomDefaultsSource( File folder ) {
+		if( customDefaultsSources == null )
+			customDefaultsSources = new ArrayList<>();
+		customDefaultsSources.add( folder );
+	}
+
+	public static void unregisterCustomDefaultsSource( File folder ) {
+		if( customDefaultsSources == null )
+			return;
+
+		customDefaultsSources.remove( folder );
+	}
+
 	private static void reSetLookAndFeel() {
 		EventQueue.invokeLater( () -> {
 			LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
@@ -612,6 +719,18 @@ public abstract class FlatLaf
 		MnemonicHandler.showMnemonics( false, null );
 	}
 
+	// do not allow overriding to avoid issues in FlatUIUtils.createSharedUI()
+	@Override
+	public final boolean equals( Object obj ) {
+		return super.equals( obj );
+	}
+
+	// do not allow overriding to avoid issues in FlatUIUtils.createSharedUI()
+	@Override
+	public final int hashCode() {
+		return super.hashCode();
+	}
+
 	//---- class ActiveFont ---------------------------------------------------
 
 	private static class ActiveFont
@@ -660,4 +779,24 @@ public abstract class FlatLaf
 			super( image );
 		}
 	}
+
+	//---- interface DisabledIconProvider -------------------------------------
+
+	/**
+	 * A provider for disabled icons.
+	 * <p>
+	 * This is intended to be implemented by {@link javax.swing.Icon} implementations
+	 * that provide the ability to paint disabled state.
+	 * <p>
+	 * Used in {@link FlatLaf#getDisabledIcon(JComponent, Icon)} to create a disabled icon from an enabled icon.
+	 */
+	public interface DisabledIconProvider
+	{
+		/**
+		 * Returns an icon with a disabled appearance.
+		 *
+		 * @return a disabled icon
+		 */
+		Icon getDisabledIcon();
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLightLaf.java

@@ -16,23 +16,41 @@
 
 package com.formdev.flatlaf;
 
+import javax.swing.UIManager;
+
 /**
  * A Flat LaF that has a light color scheme.
- *
- * The UI defaults are loaded from FlatLightLaf.properties and FlatLaf.properties
+ * <p>
+ * The UI defaults are loaded from {@code FlatLightLaf.properties} and {@code FlatLaf.properties}.
  *
  * @author Karl Tauber
  */
 public class FlatLightLaf
 	extends FlatLaf
 {
-	public static boolean install( ) {
+	public static final String NAME = "FlatLaf Light";
+
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean install() {
 		return install( new FlatLightLaf() );
 	}
 
+	/**
+	 * Adds this look and feel to the set of available look and feels.
+	 * <p>
+	 * Useful if your application uses {@link UIManager#getInstalledLookAndFeels()}
+	 * to query available LaFs and display them to the user in a combobox.
+	 */
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatLightLaf.class );
+	}
+
 	@Override
 	public String getName() {
-		return "FlatLaf Light";
+		return NAME;
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatPropertiesLaf.java

@@ -88,6 +88,10 @@ public class FlatPropertiesLaf
 		return dark;
 	}
 
+	public Properties getProperties() {
+		return properties;
+	}
+
 	@Override
 	protected ArrayList<Class<?>> getLafClassesForDefaultsLoading() {
 		ArrayList<Class<?>> lafClasses = new ArrayList<>();

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatSystemProperties.java

@@ -39,6 +39,14 @@ public interface FlatSystemProperties
 	 */
 	String UI_SCALE = "flatlaf.uiScale";
 
+	/**
+	 * Specifies whether user scaling mode is enabled.
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> {@code true}
+	 */
+	String UI_SCALE_ENABLED = "flatlaf.uiScale.enabled";
+
 	/**
 	 * Specifies whether Ubuntu font should be used on Ubuntu Linux.
 	 * By default, if not running in a JetBrains Runtime, the Liberation Sans font
@@ -84,6 +92,14 @@ public interface FlatSystemProperties
 	 */
 	String MENUBAR_EMBEDDED = "flatlaf.menuBarEmbedded";
 
+	/**
+	 * Specifies whether animations are enabled.
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> {@code true}
+	 */
+	String ANIMATION = "flatlaf.animation";
+
 	/**
 	 * Specifies whether vertical text position is corrected when UI is scaled on HiDPI screens.
 	 * <p>

flatlaf-core/src/main/java/com/formdev/flatlaf/IntelliJTheme.java

@@ -147,6 +147,10 @@ public class IntelliJTheme
 		applyColorPalette( defaults );
 		applyCheckBoxColors( defaults );
 
+		// copy values
+		for( Map.Entry<String, String> e : uiKeyCopying.entrySet() )
+			defaults.put( e.getKey(), defaults.get( e.getValue() ) );
+
 		// IDEA does not paint button background if disabled, but FlatLaf does
 		Object panelBackground = defaults.get( "Panel.background" );
 		defaults.put( "Button.disabledBackground", panelBackground );
@@ -259,6 +263,9 @@ public class IntelliJTheme
 			for( Map.Entry<String, Object> e : ((Map<String, Object>)value).entrySet() )
 				apply( key + '.' + e.getKey(), e.getValue(), defaults, defaultsKeysCache, uiKeys );
 		} else {
+			if( "".equals( value ) )
+				return; // ignore empty value
+
 			uiKeys.add( key );
 
 			// fix ComboBox size and Spinner border in all Material UI Lite themes
@@ -466,13 +473,11 @@ public class IntelliJTheme
 			defaults.remove( "CheckBox.icon[filled].selectedHoverBackground" );
 			defaults.remove( "CheckBox.icon[filled].selectedPressedBackground" );
 		}
-
-		// copy values
-		for( Map.Entry<String, String> e : uiKeyCopying.entrySet() )
-			defaults.put( e.getKey(), defaults.get( e.getValue() ) );
 	}
 
+	/** Rename UI default keys (key --> value). */
 	private static Map<String, String> uiKeyMapping = new HashMap<>();
+	/** Copy UI default keys (value --> key). */
 	private static Map<String, String> uiKeyCopying = new HashMap<>();
 	private static Map<String, String> uiKeyInverseMapping = new HashMap<>();
 	private static Map<String, String> checkboxKeyMapping = new HashMap<>();
@@ -514,6 +519,8 @@ public class IntelliJTheme
 		uiKeyMapping.put( "ProgressBar.foreground",    "" ); // ignore
 		uiKeyMapping.put( "ProgressBar.trackColor",    "ProgressBar.background" );
 		uiKeyMapping.put( "ProgressBar.progressColor", "ProgressBar.foreground" );
+		uiKeyCopying.put( "ProgressBar.selectionForeground", "ProgressBar.background" );
+		uiKeyCopying.put( "ProgressBar.selectionBackground", "ProgressBar.foreground" );
 
 		// ScrollBar
 		uiKeyMapping.put( "ScrollBar.trackColor", "ScrollBar.track" );
@@ -524,8 +531,12 @@ public class IntelliJTheme
 
 		// Slider
 		uiKeyMapping.put( "Slider.trackWidth", "" ); // ignore (used in Material Theme UI Lite)
+		uiKeyCopying.put( "Slider.trackValueColor", "ProgressBar.foreground" );
+		uiKeyCopying.put( "Slider.thumbColor", "ProgressBar.foreground" );
+		uiKeyCopying.put( "Slider.trackColor", "ProgressBar.background" );
 
 		// TitlePane
+		uiKeyCopying.put( "TitlePane.inactiveBackground",     "TitlePane.background" );
 		uiKeyMapping.put( "TitlePane.infoForeground",         "TitlePane.foreground" );
 		uiKeyMapping.put( "TitlePane.inactiveInfoForeground", "TitlePane.inactiveForeground" );
 
@@ -577,7 +588,7 @@ public class IntelliJTheme
 
 		@Override
 		public String getDescription() {
-			return theme.name;
+			return getName();
 		}
 
 		@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/LinuxFontPolicy.java

@@ -39,7 +39,7 @@ import com.formdev.flatlaf.util.UIScale;
 class LinuxFontPolicy
 {
 	static Font getFont() {
-		return SystemInfo.IS_KDE ? getKDEFont() : getGnomeFont();
+		return SystemInfo.isKDE ? getKDEFont() : getGnomeFont();
 	}
 
 	/**
@@ -77,7 +77,7 @@ class LinuxFontPolicy
 		// Ubuntu font is rendered poorly (except if running in JetBrains VM)
 		// --> use Liberation Sans font
 		if( family.startsWith( "Ubuntu" ) &&
-			!SystemInfo.IS_JETBRAINS_JVM &&
+			!SystemInfo.isJetBrainsJVM &&
 			!FlatSystemProperties.getBoolean( FlatSystemProperties.USE_UBUNTU_FONT, false ) )
 		  family = "Liberation Sans";
 

flatlaf-core/src/main/java/com/formdev/flatlaf/MnemonicHandler.java

@@ -71,13 +71,13 @@ class MnemonicHandler
 	@Override
 	public boolean postProcessKeyEvent( KeyEvent e ) {
 		int keyCode = e.getKeyCode();
-		if( SystemInfo.IS_MAC ) {
+		if( SystemInfo.isMacOS ) {
 			// Ctrl+Alt keys must be pressed on Mac
 			if( keyCode == KeyEvent.VK_CONTROL || keyCode == KeyEvent.VK_ALT )
 				showMnemonics( shouldShowMnemonics( e ) && e.isControlDown() && e.isAltDown(), e.getComponent() );
 		} else {
 			// Alt key must be pressed on Windows and Linux
-			if( SystemInfo.IS_WINDOWS )
+			if( SystemInfo.isWindows )
 				return processKeyEventOnWindows( e );
 
 			if( keyCode == KeyEvent.VK_ALT )

flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java

@@ -19,14 +19,18 @@ package com.formdev.flatlaf;
 import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Insets;
+import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Properties;
 import java.util.function.Function;
 import java.util.logging.Level;
@@ -115,6 +119,46 @@ class UIDefaultsLoader
 					addonClassLoaders.add( addonClassLoader );
 			}
 
+			// load custom properties files (usually provides by applications)
+			List<Object> customDefaultsSources = FlatLaf.getCustomDefaultsSources();
+			int size = (customDefaultsSources != null) ? customDefaultsSources.size() : 0;
+			for( int i = 0; i < size; i++ ) {
+				Object source = customDefaultsSources.get( i );
+				if( source instanceof String && i + 1 < size ) {
+					// load from package in classloader
+					String packageName = (String) source;
+					ClassLoader classLoader = (ClassLoader) customDefaultsSources.get( ++i );
+
+					// use class loader also for instantiating classes specified in values
+					if( classLoader != null && !addonClassLoaders.contains( classLoader ) )
+						addonClassLoaders.add( classLoader );
+
+					packageName = packageName.replace( '.', '/' );
+					if( classLoader == null )
+						classLoader = FlatLaf.class.getClassLoader();
+
+					for( Class<?> lafClass : lafClasses ) {
+						String propertiesName = packageName + '/' + lafClass.getSimpleName() + ".properties";
+						try( InputStream in = classLoader.getResourceAsStream( propertiesName ) ) {
+							if( in != null )
+								properties.load( in );
+						}
+					}
+				} else if( source instanceof File ) {
+					// load from folder
+					File folder = (File) source;
+					for( Class<?> lafClass : lafClasses ) {
+						File propertiesFile = new File( folder, lafClass.getSimpleName() + ".properties" );
+						if( !propertiesFile.isFile() )
+							continue;
+
+						try( InputStream in = new FileInputStream( propertiesFile ) ) {
+							properties.load( in );
+						}
+					}
+				}
+			}
+
 			// add additional defaults
 			if( additionalDefaults != null )
 				properties.putAll( additionalDefaults );
@@ -144,9 +188,9 @@ class UIDefaultsLoader
 
 				// handle platform specific properties
 				String platformPrefix =
-					SystemInfo.IS_WINDOWS ? "[win]" :
-					SystemInfo.IS_MAC ? "[mac]" :
-					SystemInfo.IS_LINUX ? "[linux]" : "[unknown]";
+					SystemInfo.isWindows ? "[win]" :
+					SystemInfo.isMacOS ? "[mac]" :
+					SystemInfo.isLinux ? "[linux]" : "[unknown]";
 				for( String key : platformSpecificKeys ) {
 					Object value = properties.remove( key );
 					if( key.startsWith( platformPrefix ) )
@@ -154,6 +198,32 @@ class UIDefaultsLoader
 				}
 			}
 
+			// get (and remove) globals, which override all other defaults that end with same suffix
+			HashMap<String, String> globals = new HashMap<>();
+			Iterator<Entry<Object, Object>> it = properties.entrySet().iterator();
+			while( it.hasNext() ) {
+				Entry<Object, Object> e = it.next();
+				String key = (String) e.getKey();
+				if( key.startsWith( GLOBAL_PREFIX ) ) {
+					globals.put( key.substring( GLOBAL_PREFIX.length() ), (String) e.getValue() );
+					it.remove();
+				}
+			}
+
+			// override UI defaults with globals
+			for( Object key : defaults.keySet() ) {
+				int dot;
+				if( !(key instanceof String) ||
+					properties.containsKey( key ) ||
+					(dot = ((String)key).lastIndexOf( '.' )) < 0 )
+				  continue;
+
+				String globalKey = ((String)key).substring( dot + 1 );
+				String globalValue = globals.get( globalKey );
+				if( globalValue != null )
+					properties.put( key, globalValue );
+			}
+
 			Function<String, String> propertiesGetter = key -> {
 				return properties.getProperty( key );
 			};
@@ -161,37 +231,10 @@ class UIDefaultsLoader
 				return resolveValue( value, propertiesGetter );
 			};
 
-			// get globals, which override all other defaults that end with same suffix
-			HashMap<String, Object> globals = new HashMap<>();
+			// parse and add properties to UI defaults
 			for( Map.Entry<Object, Object> e : properties.entrySet() ) {
 				String key = (String) e.getKey();
-				if( !key.startsWith( GLOBAL_PREFIX ) )
-					continue;
-
-				String value = resolveValue( (String) e.getValue(), propertiesGetter );
-				try {
-					globals.put( key.substring( GLOBAL_PREFIX.length() ),
-						parseValue( key, value, null, resolver, addonClassLoaders ) );
-				} catch( RuntimeException ex ) {
-					logParseError( Level.SEVERE, key, value, ex );
-				}
-			}
-
-			// override UI defaults with globals
-			for( Object key : defaults.keySet() ) {
-				if( key instanceof String && ((String)key).contains( "." ) ) {
-					String skey = (String) key;
-					String globalKey = skey.substring( skey.lastIndexOf( '.' ) + 1 );
-					Object globalValue = globals.get( globalKey );
-					if( globalValue != null )
-						defaults.put( key, globalValue );
-				}
-			}
-
-			// add non-global properties to UI defaults
-			for( Map.Entry<Object, Object> e : properties.entrySet() ) {
-				String key = (String) e.getKey();
-				if( key.startsWith( VARIABLE_PREFIX ) || key.startsWith( GLOBAL_PREFIX ) )
+				if( key.startsWith( VARIABLE_PREFIX ) )
 					continue;
 
 				String value = resolveValue( (String) e.getValue(), propertiesGetter );
@@ -543,13 +586,17 @@ class UIDefaultsLoader
 			case "darken":		return parseColorHSLIncreaseDecrease( 2, false, params, resolver, reportError );
 			case "saturate":	return parseColorHSLIncreaseDecrease( 1, true, params, resolver, reportError );
 			case "desaturate":	return parseColorHSLIncreaseDecrease( 1, false, params, resolver, reportError );
+			case "fadein":		return parseColorHSLIncreaseDecrease( 3, true, params, resolver, reportError );
+			case "fadeout":		return parseColorHSLIncreaseDecrease( 3, false, params, resolver, reportError );
+			case "fade":		return parseColorFade( params, resolver, reportError );
+			case "spin":		return parseColorSpin( params, resolver, reportError );
 		}
 
 		throw new IllegalArgumentException( "unknown color function '" + value + "'" );
 	}
 
 	/**
-	 * Syntax: rgb(red,green,blue) or rgba(red,green,blue,alpha) or rgba(color,alpha)
+	 * Syntax: rgb(red,green,blue) or rgba(red,green,blue,alpha)
 	 *   - red:   an integer 0-255 or a percentage 0-100%
 	 *   - green: an integer 0-255 or a percentage 0-100%
 	 *   - blue:  an integer 0-255 or a percentage 0-100%
@@ -560,6 +607,8 @@ class UIDefaultsLoader
 	{
 		if( hasAlpha && params.size() == 2 ) {
 			// syntax rgba(color,alpha), which allows adding alpha to any color
+			// NOTE: this syntax is deprecated
+			//       use fade(color,alpha) instead
 			String colorStr = params.get( 0 );
 			int alpha = parseInteger( params.get( 1 ), 0, 255, true );
 
@@ -596,7 +645,8 @@ class UIDefaultsLoader
 
 	/**
 	 * Syntax: lighten(color,amount[,options]) or darken(color,amount[,options]) or
-	 *         saturate(color,amount[,options]) or desaturate(color,amount[,options])
+	 *         saturate(color,amount[,options]) or desaturate(color,amount[,options]) or
+	 *         fadein(color,amount[,options]) or fadeout(color,amount[,options])
 	 *   - color: a color (e.g. #f00) or a color function
 	 *   - amount: percentage 0-100%
 	 *   - options: [relative] [autoInverse] [noAutoInverse] [lazy] [derived]
@@ -636,9 +686,64 @@ class UIDefaultsLoader
 			};
 		}
 
+		// parse base color, apply function and create derived color
+		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+	}
+
+	/**
+	 * Syntax: fade(color,amount[,options])
+	 *   - color: a color (e.g. #f00) or a color function
+	 *   - amount: percentage 0-100%
+	 *   - options: [derived]
+	 */
+	private static Object parseColorFade( List<String> params, Function<String, String> resolver, boolean reportError ) {
+		String colorStr = params.get( 0 );
+		int amount = parsePercentage( params.get( 1 ) );
+		boolean derived = false;
+
+		if( params.size() > 2 ) {
+			String options = params.get( 2 );
+			derived = options.contains( "derived" );
+		}
+
+		// create function
+		ColorFunction function = new ColorFunctions.Fade( amount );
+
+		// parse base color, apply function and create derived color
+		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+	}
+
+	/**
+	 * Syntax: spin(color,angle[,options])
+	 *   - color: a color (e.g. #f00) or a color function
+	 *   - angle: number of degrees to rotate
+	 *   - options: [derived]
+	 */
+	private static Object parseColorSpin( List<String> params, Function<String, String> resolver, boolean reportError ) {
+		String colorStr = params.get( 0 );
+		int amount = parseInteger( params.get( 1 ), true );
+		boolean derived = false;
+
+		if( params.size() > 2 ) {
+			String options = params.get( 2 );
+			derived = options.contains( "derived" );
+		}
+
+		// create function
+		ColorFunction function = new ColorFunctions.HSLIncreaseDecrease( 0, true, amount, false, false );
+
+		// parse base color, apply function and create derived color
+		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+	}
+
+	private static Object parseFunctionBaseColor( String colorStr, ColorFunction function,
+		boolean derived, Function<String, String> resolver, boolean reportError )
+	{
 		// parse base color
 		String resolvedColorStr = resolver.apply( colorStr );
 		ColorUIResource baseColor = (ColorUIResource) parseColorOrFunction( resolvedColorStr, resolver, reportError );
+		if( baseColor == null )
+			return null;
 
 		// apply this function to base color
 		Color newColor = ColorFunctions.applyFunctions( baseColor, function );

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatAnimatedIcon.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.icons;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import com.formdev.flatlaf.util.AnimatedIcon;
+
+/**
+ * Base class for animated icons that scales width and height, creates and initializes
+ * a scaled graphics context for icon painting.
+ * <p>
+ * Subclasses do not need to scale icon painting.
+ * <p>
+ * This class does not store any state information (needed for animation) in its instance.
+ * Instead a client property is set on the painted component.
+ * This makes it possible to use a share icon instance for multiple components.
+ *
+ * @author Karl Tauber
+ */
+public abstract class FlatAnimatedIcon
+	extends FlatAbstractIcon
+	implements AnimatedIcon
+{
+	public FlatAnimatedIcon( int width, int height, Color color ) {
+		super( width, height, color );
+	}
+
+	@Override
+	public void paintIcon( Component c, Graphics g, int x, int y ) {
+		super.paintIcon( c, g, x, y );
+		AnimatedIcon.AnimationSupport.saveIconLocation( this, c, x, y );
+	}
+
+	@Override
+	protected void paintIcon( Component c, Graphics2D g ) {
+		AnimatedIcon.AnimationSupport.paintIcon( this, c, g, 0, 0 );
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatAscendingSortIcon.java

@@ -27,7 +27,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "ascendingSort" icon for {@link javax.swing.table.JTableHeader}.
  *
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Table.sortIconColor				Color
  *
  * @author Karl Tauber
@@ -35,7 +35,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatAscendingSortIcon
 	extends FlatAbstractIcon
 {
-	protected final boolean chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
+	protected final boolean chevron = FlatUIUtils.isChevron( UIManager.getString( "Component.arrowType" ) );
 	protected final Color sortIconColor = UIManager.getColor( "Table.sortIconColor" );
 
 	public FlatAscendingSortIcon() {

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatCheckBoxIcon.java

@@ -129,78 +129,101 @@ public class FlatCheckBoxIcon
 	}
 
 	@Override
-	protected void paintIcon( Component c, Graphics2D g2 ) {
-		boolean indeterminate = c instanceof JComponent && clientPropertyEquals( (JComponent) c, SELECTED_STATE, SELECTED_STATE_INDETERMINATE );
-		boolean selected = indeterminate || (c instanceof AbstractButton && ((AbstractButton)c).isSelected());
+	protected void paintIcon( Component c, Graphics2D g ) {
+		boolean indeterminate = isIndeterminate( c );
+		boolean selected = indeterminate || isSelected( c );
 		boolean isFocused = FlatUIUtils.isPermanentFocusOwner( c );
 
 		// paint focused border
 		if( isFocused && focusWidth > 0 && FlatButtonUI.isFocusPainted( c ) ) {
-			g2.setColor( focusColor );
-			paintFocusBorder( g2 );
+			g.setColor( getFocusColor( c ) );
+			paintFocusBorder( c, g );
 		}
 
 		// paint border
-		g2.setColor( FlatButtonUI.buttonStateColor( c,
-			selected ? selectedBorderColor : borderColor,
-			disabledBorderColor,
-			selected && selectedFocusedBorderColor != null ? selectedFocusedBorderColor : focusedBorderColor,
-			hoverBorderColor,
-			null ) );
-		paintBorder( g2 );
+		g.setColor( getBorderColor( c, selected ) );
+		paintBorder( c, g );
 
 		// paint background
-		g2.setColor( FlatUIUtils.deriveColor( FlatButtonUI.buttonStateColor( c,
-			selected ? selectedBackground : background,
-			disabledBackground,
-			(selected && selectedFocusedBackground != null) ? selectedFocusedBackground : focusedBackground,
-			(selected && selectedHoverBackground != null) ? selectedHoverBackground : hoverBackground,
-			(selected && selectedPressedBackground != null) ? selectedPressedBackground : pressedBackground ),
-			background ) );
-		paintBackground( g2 );
+		g.setColor( FlatUIUtils.deriveColor( getBackground( c, selected ), background ) );
+		paintBackground( c, g );
 
 		// paint checkmark
 		if( selected || indeterminate ) {
-			g2.setColor( c.isEnabled()
-				? ((selected && isFocused && selectedFocusedCheckmarkColor != null)
-					? selectedFocusedCheckmarkColor
-					: checkmarkColor)
-				: disabledCheckmarkColor );
+			g.setColor( getCheckmarkColor( c, selected, isFocused ) );
 			if( indeterminate )
-				paintIndeterminate( g2 );
+				paintIndeterminate( c, g );
 			else
-				paintCheckmark( g2 );
+				paintCheckmark( c, g );
 		}
 	}
 
-	protected void paintFocusBorder( Graphics2D g2 ) {
+	protected void paintFocusBorder( Component c, Graphics2D g ) {
 		// the outline focus border is painted outside of the icon
 		int wh = ICON_SIZE - 1 + (focusWidth * 2);
 		int arcwh = arc + (focusWidth * 2);
-		g2.fillRoundRect( -focusWidth + 1, -focusWidth, wh, wh, arcwh, arcwh );
+		g.fillRoundRect( -focusWidth + 1, -focusWidth, wh, wh, arcwh, arcwh );
 	}
 
-	protected void paintBorder( Graphics2D g2 ) {
+	protected void paintBorder( Component c, Graphics2D g ) {
 		int arcwh = arc;
-		g2.fillRoundRect( 1, 0, 14, 14, arcwh, arcwh );
+		g.fillRoundRect( 1, 0, 14, 14, arcwh, arcwh );
 	}
 
-	protected void paintBackground( Graphics2D g2 ) {
+	protected void paintBackground( Component c, Graphics2D g ) {
 		int arcwh = arc - 1;
-		g2.fillRoundRect( 2, 1, 12, 12, arcwh, arcwh );
+		g.fillRoundRect( 2, 1, 12, 12, arcwh, arcwh );
 	}
 
-	protected void paintCheckmark( Graphics2D g2 ) {
+	protected void paintCheckmark( Component c, Graphics2D g ) {
 		Path2D.Float path = new Path2D.Float();
 		path.moveTo( 4.5f, 7.5f );
 		path.lineTo( 6.6f, 10f );
 		path.lineTo( 11.25f, 3.5f );
 
-		g2.setStroke( new BasicStroke( 1.9f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		g2.draw( path );
+		g.setStroke( new BasicStroke( 1.9f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+		g.draw( path );
 	}
 
-	protected void paintIndeterminate( Graphics2D g2 ) {
-		g2.fill( new RoundRectangle2D.Float( 3.75f, 5.75f, 8.5f, 2.5f, 2f, 2f ) );
+	protected void paintIndeterminate( Component c, Graphics2D g ) {
+		g.fill( new RoundRectangle2D.Float( 3.75f, 5.75f, 8.5f, 2.5f, 2f, 2f ) );
+	}
+
+	protected boolean isIndeterminate( Component c ) {
+		return c instanceof JComponent && clientPropertyEquals( (JComponent) c, SELECTED_STATE, SELECTED_STATE_INDETERMINATE );
+	}
+
+	protected boolean isSelected( Component c ) {
+		return c instanceof AbstractButton && ((AbstractButton)c).isSelected();
+	}
+
+	protected Color getFocusColor( Component c ) {
+		return focusColor;
+	}
+
+	protected Color getBorderColor( Component c, boolean selected ) {
+		return FlatButtonUI.buttonStateColor( c,
+			selected ? selectedBorderColor : borderColor,
+			disabledBorderColor,
+			selected && selectedFocusedBorderColor != null ? selectedFocusedBorderColor : focusedBorderColor,
+			hoverBorderColor,
+			null );
+	}
+
+	protected Color getBackground( Component c, boolean selected ) {
+		return FlatButtonUI.buttonStateColor( c,
+			selected ? selectedBackground : background,
+			disabledBackground,
+			(selected && selectedFocusedBackground != null) ? selectedFocusedBackground : focusedBackground,
+			(selected && selectedHoverBackground != null) ? selectedHoverBackground : hoverBackground,
+			(selected && selectedPressedBackground != null) ? selectedPressedBackground : pressedBackground );
+	}
+
+	protected Color getCheckmarkColor( Component c, boolean selected, boolean isFocused ) {
+		return c.isEnabled()
+			? ((selected && isFocused && selectedFocusedCheckmarkColor != null)
+				? selectedFocusedCheckmarkColor
+				: checkmarkColor)
+			: disabledCheckmarkColor;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatDescendingSortIcon.java

@@ -27,7 +27,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "descendingSort" icon for {@link javax.swing.table.JTableHeader}.
  *
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Table.sortIconColor				Color
  *
  * @author Karl Tauber
@@ -35,7 +35,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatDescendingSortIcon
 	extends FlatAbstractIcon
 {
-	protected final boolean chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
+	protected final boolean chevron = FlatUIUtils.isChevron( UIManager.getString( "Component.arrowType" ) );
 	protected final Color sortIconColor = UIManager.getColor( "Table.sortIconColor" );
 
 	public FlatDescendingSortIcon() {

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatMenuArrowIcon.java

@@ -28,7 +28,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "arrow" icon for {@link javax.swing.JMenu}.
  *
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Menu.icon.arrowColor				Color
  * @uiDefault Menu.icon.disabledArrowColor		Color
  * @uiDefault Menu.selectionForeground			Color
@@ -39,7 +39,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatMenuArrowIcon
 	extends FlatAbstractIcon
 {
-	protected final boolean chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
+	protected final boolean chevron = FlatUIUtils.isChevron( UIManager.getString( "Component.arrowType" ) );
 	protected final Color arrowColor = UIManager.getColor( "Menu.icon.arrowColor" );
 	protected final Color disabledArrowColor = UIManager.getColor( "Menu.icon.disabledArrowColor" );
 	protected final Color selectionForeground = UIManager.getColor( "Menu.selectionForeground" );

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatRadioButtonIcon.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.Component;
 import java.awt.Graphics2D;
 import java.awt.geom.Ellipse2D;
 
@@ -36,25 +37,25 @@ public class FlatRadioButtonIcon
 	protected final int centerDiameter = getUIInt( "RadioButton.icon.centerDiameter", 8, style );
 
 	@Override
-	protected void paintFocusBorder( Graphics2D g2 ) {
+	protected void paintFocusBorder( Component c, Graphics2D g ) {
 		// the outline focus border is painted outside of the icon
 		int wh = ICON_SIZE + (focusWidth * 2);
-		g2.fillOval( -focusWidth, -focusWidth, wh, wh );
+		g.fillOval( -focusWidth, -focusWidth, wh, wh );
 	}
 
 	@Override
-	protected void paintBorder( Graphics2D g2 ) {
-		g2.fillOval( 0, 0, 15, 15 );
+	protected void paintBorder( Component c, Graphics2D g ) {
+		g.fillOval( 0, 0, 15, 15 );
 	}
 
 	@Override
-	protected void paintBackground( Graphics2D g2 ) {
-		g2.fillOval( 1, 1, 13, 13 );
+	protected void paintBackground( Component c, Graphics2D g ) {
+		g.fillOval( 1, 1, 13, 13 );
 	}
 
 	@Override
-	protected void paintCheckmark( Graphics2D g2 ) {
+	protected void paintCheckmark( Component c, Graphics2D g ) {
 		float xy = (ICON_SIZE - centerDiameter) / 2f;
-		g2.fill( new Ellipse2D.Float( xy, xy, centerDiameter, centerDiameter ) );
+		g.fill( new Ellipse2D.Float( xy, xy, centerDiameter, centerDiameter ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTabbedPaneCloseIcon.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.icons;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.geom.Line2D;
+import java.awt.geom.Path2D;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.ui.FlatButtonUI;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+/**
+ * "close" icon for closable tabs in {@link javax.swing.JTabbedPane}.
+ *
+ * @uiDefault TabbedPane.closeSize						Dimension
+ * @uiDefault TabbedPane.closeArc						int
+ * @uiDefault TabbedPane.closeCrossPlainSize			float
+ * @uiDefault TabbedPane.closeCrossFilledSize			float
+ * @uiDefault TabbedPane.closeCrossLineWidth			float
+ * @uiDefault TabbedPane.closeBackground				Color
+ * @uiDefault TabbedPane.closeForeground				Color
+ * @uiDefault TabbedPane.closeHoverBackground			Color
+ * @uiDefault TabbedPane.closeHoverForeground			Color
+ * @uiDefault TabbedPane.closePressedBackground			Color
+ * @uiDefault TabbedPane.closePressedForeground			Color
+ *
+ * @author Karl Tauber
+ */
+public class FlatTabbedPaneCloseIcon
+	extends FlatAbstractIcon
+{
+	protected final Dimension size = UIManager.getDimension( "TabbedPane.closeSize" );
+	protected final int arc = UIManager.getInt( "TabbedPane.closeArc" );
+	protected final float crossPlainSize = FlatUIUtils.getUIFloat( "TabbedPane.closeCrossPlainSize", 7.5f );
+	protected final float crossFilledSize = FlatUIUtils.getUIFloat( "TabbedPane.closeCrossFilledSize", crossPlainSize );
+	protected final float closeCrossLineWidth = FlatUIUtils.getUIFloat( "TabbedPane.closeCrossLineWidth", 1f );
+	protected final Color background = UIManager.getColor( "TabbedPane.closeBackground" );
+	protected final Color foreground = UIManager.getColor( "TabbedPane.closeForeground" );
+	protected final Color hoverBackground = UIManager.getColor( "TabbedPane.closeHoverBackground" );
+	protected final Color hoverForeground = UIManager.getColor( "TabbedPane.closeHoverForeground" );
+	protected final Color pressedBackground = UIManager.getColor( "TabbedPane.closePressedBackground" );
+	protected final Color pressedForeground = UIManager.getColor( "TabbedPane.closePressedForeground" );
+
+	public FlatTabbedPaneCloseIcon() {
+		super( 16, 16, null );
+	}
+
+	@Override
+	protected void paintIcon( Component c, Graphics2D g ) {
+		// paint background
+		Color bg = FlatButtonUI.buttonStateColor( c, background, null, null, hoverBackground, pressedBackground );
+		if( bg != null ) {
+			g.setColor( FlatUIUtils.deriveColor( bg, c.getBackground() ) );
+			g.fillRoundRect( (width - size.width) / 2, (height - size.height) / 2,
+				size.width, size.height, arc, arc );
+		}
+
+		// set cross color
+		Color fg = FlatButtonUI.buttonStateColor( c, foreground, null, null, hoverForeground, pressedForeground );
+		g.setColor( FlatUIUtils.deriveColor( fg, c.getForeground() ) );
+
+		float mx = width / 2;
+		float my = height / 2;
+		float r = ((bg != null) ? crossFilledSize : crossPlainSize) / 2;
+
+		// paint cross
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		path.append( new Line2D.Float( mx - r, my - r, mx + r, my + r ), false );
+		path.append( new Line2D.Float( mx - r, my + r, mx + r, my - r ), false );
+		g.setStroke( new BasicStroke( closeCrossLineWidth ) );
+		g.draw( path );
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTreeCollapsedIcon.java

@@ -25,7 +25,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "collapsed" icon for {@link javax.swing.JTree}.
  *
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Tree.icon.collapsedColor			Color
  *
  * @author Karl Tauber
@@ -41,7 +41,7 @@ public class FlatTreeCollapsedIcon
 
 	FlatTreeCollapsedIcon( Color color ) {
 		super( 11, 11, color );
-		chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
+		chevron = FlatUIUtils.isChevron( UIManager.getString( "Component.arrowType" ) );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatArrowButton.java

@@ -42,12 +42,13 @@ public class FlatArrowButton
 {
 	public static final int DEFAULT_ARROW_WIDTH = 8;
 
-	private final boolean chevron;
-	private final Color foreground;
-	private final Color disabledForeground;
-	private final Color hoverForeground;
-	private final Color hoverBackground;
-	private final Color pressedBackground;
+	protected final boolean chevron;
+	protected final Color foreground;
+	protected final Color disabledForeground;
+	protected final Color hoverForeground;
+	protected final Color hoverBackground;
+	protected final Color pressedForeground;
+	protected final Color pressedBackground;
 
 	private int arrowWidth = DEFAULT_ARROW_WIDTH;
 	private int xOffset = 0;
@@ -64,14 +65,21 @@ public class FlatArrowButton
 
 	public FlatArrowButton( int direction, String type, Color foreground, Color disabledForeground,
 		Color hoverForeground, Color hoverBackground, Color pressedBackground )
+	{
+		this( direction, type, foreground, disabledForeground, hoverForeground, hoverBackground, null, pressedBackground );
+	}
+
+	public FlatArrowButton( int direction, String type, Color foreground, Color disabledForeground,
+		Color hoverForeground, Color hoverBackground, Color pressedForeground, Color pressedBackground )
 	{
 		super( direction, Color.WHITE, Color.WHITE, Color.WHITE, Color.WHITE );
 
-		this.chevron = "chevron".equals( type );
+		this.chevron = FlatUIUtils.isChevron( type );
 		this.foreground = foreground;
 		this.disabledForeground = disabledForeground;
 		this.hoverForeground = hoverForeground;
 		this.hoverBackground = hoverBackground;
+		this.pressedForeground = pressedForeground;
 		this.pressedBackground = pressedBackground;
 
 		setOpaque( false );
@@ -142,6 +150,10 @@ public class FlatArrowButton
 		return background;
 	}
 
+	protected Color deriveForeground( Color foreground ) {
+		return foreground;
+	}
+
 	@Override
 	public Dimension getPreferredSize() {
 		return scale( super.getPreferredSize() );
@@ -154,27 +166,40 @@ public class FlatArrowButton
 
 	@Override
 	public void paint( Graphics g ) {
-		Graphics2D g2 = (Graphics2D)g;
-		FlatUIUtils.setRenderingHints( g2 );
-
-		int width = getWidth();
-		int height = getHeight();
-		boolean enabled = isEnabled();
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g );
 
 		// paint hover or pressed background
-		if( enabled ) {
+		if( isEnabled() ) {
 			Color background = (pressedBackground != null && isPressed())
-				? deriveBackground( pressedBackground )
-				: ((hoverBackground != null && isHover())
-					? deriveBackground( hoverBackground )
+				? pressedBackground
+				: (hoverBackground != null && isHover()
+					? hoverBackground
 					: null);
 
 			if( background != null ) {
-				g.setColor( background );
-				g.fillRect( 0, 0, width, height );
+				g.setColor( deriveBackground( background ) );
+				paintBackground( (Graphics2D) g );
 			}
 		}
 
+		// paint arrow
+		g.setColor( deriveForeground( isEnabled()
+			? (pressedForeground != null && isPressed()
+				? pressedForeground
+				: (hoverForeground != null && isHover()
+					? hoverForeground
+					: foreground))
+			: disabledForeground ) );
+		paintArrow( (Graphics2D) g );
+
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
+	}
+
+	protected void paintBackground( Graphics2D g ) {
+		g.fillRect( 0, 0, getWidth(), getHeight() );
+	}
+
+	protected void paintArrow( Graphics2D g ) {
 		int direction = getDirection();
 		boolean vert = (direction == NORTH || direction == SOUTH);
 
@@ -193,8 +218,8 @@ public class FlatArrowButton
 			rh++;
 		}
 
-		int x = Math.round( (width - rw) / 2f + scale( (float) xOffset ) );
-		int y = Math.round( (height - rh) / 2f + scale( (float) yOffset ) );
+		int x = Math.round( (getWidth() - rw) / 2f + scale( (float) xOffset ) );
+		int y = Math.round( (getHeight() - rh) / 2f + scale( (float) yOffset ) );
 
 		// move arrow for round borders
 		Container parent = getParent();
@@ -202,20 +227,17 @@ public class FlatArrowButton
 			x -= scale( parent.getComponentOrientation().isLeftToRight() ? 1 : -1 );
 
 		// paint arrow
-		g.setColor( enabled
-			? (isHover() && hoverForeground != null ? hoverForeground : foreground)
-			: disabledForeground );
 		g.translate( x, y );
 /*debug
-		debugPaint( g2, vert, rw, rh );
+		debugPaint( g, vert, rw, rh );
 debug*/
 		Shape arrowShape = createArrowShape( direction, chevron, w, h );
 		if( chevron ) {
-			g2.setStroke( new BasicStroke( scale( 1f ) ) );
-			g2.draw( arrowShape );
+			g.setStroke( new BasicStroke( scale( 1f ) ) );
+			g.draw( arrowShape );
 		} else {
 			// triangle
-			g2.fill( arrowShape );
+			g.fill( arrowShape );
 		}
 		g.translate( -x, -y );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatBorder.java

@@ -43,24 +43,24 @@ import com.formdev.flatlaf.util.DerivedColor;
  * Border for various components (e.g. {@link javax.swing.JTextField}).
  *
  * There is empty space around the component border, if Component.focusWidth is greater than zero,
- * which is used to paint focus border.
+ * which is used to paint outer focus border.
  *
- * Because there is empty space (if focus border is not painted),
+ * Because there is empty space (if outer focus border is not painted),
  * UI delegates that use this border (or subclasses) must invoke
  * {@link FlatUIUtils#paintParentBackground} to paint the empty space correctly.
  *
- * @uiDefault Component.focusWidth			int
- * @uiDefault Component.innerFocusWidth		int or float
- * @uiDefault Component.focusColor			Color
- * @uiDefault Component.borderColor			Color
- * @uiDefault Component.disabledBorderColor	Color
- * @uiDefault Component.focusedBorderColor	Color
+ * @uiDefault Component.focusWidth						int
+ * @uiDefault Component.innerFocusWidth					int or float
+ * @uiDefault Component.focusColor						Color
+ * @uiDefault Component.borderColor						Color
+ * @uiDefault Component.disabledBorderColor				Color
+ * @uiDefault Component.focusedBorderColor				Color
  *
- * @uiDefault Component.error.borderColor			Color
- * @uiDefault Component.error.focusedBorderColor	Color
- * @uiDefault Component.warning.borderColor			Color
- * @uiDefault Component.warning.focusedBorderColor	Color
- * @uiDefault Component.custom.borderColor			Color
+ * @uiDefault Component.error.borderColor				Color
+ * @uiDefault Component.error.focusedBorderColor		Color
+ * @uiDefault Component.warning.borderColor				Color
+ * @uiDefault Component.warning.focusedBorderColor		Color
+ * @uiDefault Component.custom.borderColor				Color
  *
  * @author Karl Tauber
  */
@@ -87,22 +87,23 @@ public class FlatBorder
 		try {
 			FlatUIUtils.setRenderingHints( g2 );
 
-			boolean isCellEditor = isTableCellEditor( c );
-			float focusWidth = isCellEditor ? 0 : scale( (float) getFocusWidth( c ) );
+			float focusWidth = scale( (float) getFocusWidth( c ) );
 			float borderWidth = scale( (float) getBorderWidth( c ) );
-			float arc = isCellEditor ? 0 : scale( (float) getArc( c ) );
+			float arc = scale( (float) getArc( c ) );
 			Color outlineColor = getOutlineColor( c );
 
+			// paint outer border
 			if( outlineColor != null || isFocused( c ) ) {
-				float innerFocusWidth = !(c instanceof JScrollPane)
-					? (outlineColor != null ? innerOutlineWidth : this.innerFocusWidth)
+				float innerWidth = !isCellEditor( c ) && !(c instanceof JScrollPane)
+					? (outlineColor != null ? innerOutlineWidth : innerFocusWidth)
 					: 0;
 
 				g2.setColor( (outlineColor != null) ? outlineColor : getFocusColor( c ) );
-				FlatUIUtils.paintComponentOuterBorder( g2, x, y, width, height, focusWidth,
-					scale( (float) getLineWidth( c ) ) + scale( innerFocusWidth ), arc );
+				FlatUIUtils.paintComponentOuterBorder( g2, x, y, width, height,
+					focusWidth, borderWidth + scale( innerWidth ), arc );
 			}
 
+			// paint border
 			g2.setPaint( (outlineColor != null) ? outlineColor : getBorderColor( c ) );
 			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, focusWidth, borderWidth, arc );
 		} finally {
@@ -110,6 +111,10 @@ public class FlatBorder
 		}
 	}
 
+	/**
+	 * Returns the outline color of the component border specified in client property
+	 * {@link FlatClientProperties#OUTLINE}.
+	 */
 	protected Color getOutlineColor( Component c ) {
 		if( !(c instanceof JComponent) )
 			return null;
@@ -192,14 +197,13 @@ public class FlatBorder
 			return FlatUIUtils.isPermanentFocusOwner( c );
 	}
 
-	protected boolean isTableCellEditor( Component c ) {
-		return FlatUIUtils.isTableCellEditor( c );
+	protected boolean isCellEditor( Component c ) {
+		return FlatUIUtils.isCellEditor( c );
 	}
 
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
-		boolean isCellEditor = isTableCellEditor( c );
-		float focusWidth = isCellEditor ? 0 : scale( (float) getFocusWidth( c ) );
+		float focusWidth = scale( (float) getFocusWidth( c ) );
 		float ow = focusWidth + scale( (float) getLineWidth( c ) );
 
 		insets = super.getBorderInsets( c, insets );
@@ -207,6 +211,18 @@ public class FlatBorder
 		insets.left = Math.round( scale( (float) insets.left ) + ow );
 		insets.bottom = Math.round( scale( (float) insets.bottom ) + ow );
 		insets.right = Math.round( scale( (float) insets.right ) + ow );
+
+		if( isCellEditor( c ) ) {
+			// remove top and bottom insets if used as cell editor
+			insets.top = insets.bottom = 0;
+
+			// remove right/left insets to avoid that text is truncated (e.g. in file chooser)
+			if( c.getComponentOrientation().isLeftToRight() )
+				insets.right = 0;
+			else
+				insets.left = 0;
+		}
+
 		return insets;
 	}
 
@@ -214,6 +230,9 @@ public class FlatBorder
 	 * Returns the (unscaled) thickness of the outer focus border.
 	 */
 	protected int getFocusWidth( Component c ) {
+		if( isCellEditor( c ) )
+			return 0;
+
 		return focusWidth;
 	}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonBorder.java

@@ -42,6 +42,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.default.hoverBorderColor	Color	optional
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
+ * @uiDefault Button.borderWidth				int
  * @uiDefault Button.default.borderWidth		int
  * @uiDefault Button.toolbar.margin				Insets
  * @uiDefault Button.toolbar.spacingInsets		Insets
@@ -62,6 +63,7 @@ public class FlatButtonBorder
 	protected final Color defaultHoverBorderColor = UIManager.getColor( "Button.default.hoverBorderColor" );
 	protected final Color defaultFocusedBorderColor = UIManager.getColor( "Button.default.focusedBorderColor" );
 	protected final Color defaultFocusColor = UIManager.getColor( "Button.default.focusColor" );
+	protected final int borderWidth = UIManager.getInt( "Button.borderWidth" );
 	protected final int defaultBorderWidth = UIManager.getInt( "Button.default.borderWidth" );
 	protected final Insets toolbarMargin = UIManager.getInsets( "Button.toolbar.margin" );
 	protected final Insets toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
@@ -134,11 +136,14 @@ public class FlatButtonBorder
 
 	@Override
 	protected int getBorderWidth( Component c ) {
-		return FlatButtonUI.isDefaultButton( c ) ? defaultBorderWidth : super.getBorderWidth( c );
+		return FlatButtonUI.isDefaultButton( c ) ? defaultBorderWidth : borderWidth;
 	}
 
 	@Override
 	protected int getArc( Component c ) {
+		if( isCellEditor( c ) )
+			return 0;
+
 		switch( FlatButtonUI.getButtonType( c ) ) {
 			case FlatButtonUI.TYPE_SQUARE: return 0;
 			case FlatButtonUI.TYPE_ROUND_RECT: return Short.MAX_VALUE;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonUI.java

@@ -67,8 +67,11 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.focusedBackground			Color	optional
  * @uiDefault Button.hoverBackground			Color	optional
  * @uiDefault Button.pressedBackground			Color	optional
+ * @uiDefault Button.selectedBackground			Color
+ * @uiDefault Button.selectedForeground			Color
  * @uiDefault Button.disabledBackground			Color	optional
  * @uiDefault Button.disabledText				Color
+ * @uiDefault Button.disabledSelectedBackground	Color
  * @uiDefault Button.default.background			Color
  * @uiDefault Button.default.startBackground	Color	optional; if set, a gradient paint is used and Button.default.background is ignored
  * @uiDefault Button.default.endBackground		Color	optional; if set, a gradient paint is used
@@ -84,6 +87,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.toolbar.spacingInsets		Insets
  * @uiDefault Button.toolbar.hoverBackground	Color
  * @uiDefault Button.toolbar.pressedBackground	Color
+ * @uiDefault Button.toolbar.selectedBackground	Color
  *
  * @author Karl Tauber
  */
@@ -101,8 +105,11 @@ public class FlatButtonUI
 	protected Color focusedBackground;
 	protected Color hoverBackground;
 	protected Color pressedBackground;
+	protected Color selectedBackground;
+	protected Color selectedForeground;
 	protected Color disabledBackground;
 	protected Color disabledText;
+	protected Color disabledSelectedBackground;
 
 	protected Color defaultBackground;
 	protected Color defaultEndBackground;
@@ -119,17 +126,14 @@ public class FlatButtonUI
 	protected Insets toolbarSpacingInsets;
 	protected Color toolbarHoverBackground;
 	protected Color toolbarPressedBackground;
+	protected Color toolbarSelectedBackground;
 
 	private Icon helpButtonIcon;
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatButtonUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatButtonUI.class, FlatButtonUI::new );
 	}
 
 	@Override
@@ -150,8 +154,11 @@ public class FlatButtonUI
 			focusedBackground = UIManager.getColor( prefix + "focusedBackground" );
 			hoverBackground = UIManager.getColor( prefix + "hoverBackground" );
 			pressedBackground = UIManager.getColor( prefix + "pressedBackground" );
+			selectedBackground = UIManager.getColor( prefix + "selectedBackground" );
+			selectedForeground = UIManager.getColor( prefix + "selectedForeground" );
 			disabledBackground = UIManager.getColor( prefix + "disabledBackground" );
 			disabledText = UIManager.getColor( prefix + "disabledText" );
+			disabledSelectedBackground = UIManager.getColor( prefix + "disabledSelectedBackground" );
 
 			if( UIManager.getBoolean( "Button.paintShadow" ) ) {
 				shadowWidth = FlatUIUtils.getUIInt( "Button.shadowWidth", 2 );
@@ -174,6 +181,7 @@ public class FlatButtonUI
 			toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
 			toolbarHoverBackground = UIManager.getColor( prefix + "toolbar.hoverBackground" );
 			toolbarPressedBackground = UIManager.getColor( prefix + "toolbar.pressedBackground" );
+			toolbarSelectedBackground = UIManager.getColor( prefix + "toolbar.selectedBackground" );
 
 			helpButtonIcon = UIManager.getIcon( "HelpButton.icon" );
 
@@ -246,15 +254,23 @@ public class FlatButtonUI
 			(icon == null && text != null && ("...".equals( text ) || text.length() == 1));
 	}
 
-	// same indices as in parameters to clientPropertyChoice()
 	static final int TYPE_OTHER = -1;
 	static final int TYPE_SQUARE = 0;
 	static final int TYPE_ROUND_RECT = 1;
 
 	static int getButtonType( Component c ) {
-		return (c instanceof AbstractButton)
-			? clientPropertyChoice( (AbstractButton) c, BUTTON_TYPE, BUTTON_TYPE_SQUARE, BUTTON_TYPE_ROUND_RECT )
-			: TYPE_OTHER;
+		if( !(c instanceof AbstractButton) )
+			return TYPE_OTHER;
+
+		Object value = ((AbstractButton)c).getClientProperty( BUTTON_TYPE );
+		if( !(value instanceof String) )
+			return TYPE_OTHER;
+
+		switch( (String) value ) {
+			case BUTTON_TYPE_SQUARE:		return TYPE_SQUARE;
+			case BUTTON_TYPE_ROUND_RECT:	return TYPE_ROUND_RECT;
+			default:						return TYPE_OTHER;
+		}
 	}
 
 	static boolean isHelpButton( Component c ) {
@@ -369,6 +385,17 @@ public class FlatButtonUI
 	}
 
 	protected Color getBackground( JComponent c ) {
+		if( ((AbstractButton)c).isSelected() ) {
+			// in toolbar use same colors for disabled and enabled because
+			// we assume that toolbar icon is shown disabled
+			boolean toolBarButton = isToolBarButton( c );
+			return buttonStateColor( c,
+				toolBarButton ? toolbarSelectedBackground : selectedBackground,
+				toolBarButton ? toolbarSelectedBackground : disabledSelectedBackground,
+				null, null,
+				toolBarButton ? toolbarPressedBackground : pressedBackground );
+		}
+
 		if( !c.isEnabled() )
 			return disabledBackground;
 
@@ -430,6 +457,9 @@ public class FlatButtonUI
 		if( !c.isEnabled() )
 			return disabledText;
 
+		if( ((AbstractButton)c).isSelected() && !isToolBarButton( c ) )
+			return selectedForeground;
+
 		// use component foreground if explicitly set
 		Color fg = c.getForeground();
 		if( isCustomForeground( fg ) )

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatCaret.java

@@ -36,13 +36,15 @@ public class FlatCaret
 	implements UIResource
 {
 	private final String selectAllOnFocusPolicy;
+	private final boolean selectAllOnMouseClick;
 
 	private boolean wasFocused;
 	private boolean wasTemporaryLost;
 	private boolean isMousePressed;
 
-	public FlatCaret( String selectAllOnFocusPolicy ) {
+	public FlatCaret( String selectAllOnFocusPolicy, boolean selectAllOnMouseClick ) {
 		this.selectAllOnFocusPolicy = selectAllOnFocusPolicy;
+		this.selectAllOnMouseClick = selectAllOnMouseClick;
 	}
 
 	@Override
@@ -61,7 +63,7 @@ public class FlatCaret
 
 	@Override
 	public void focusGained( FocusEvent e ) {
-		if( !wasTemporaryLost && !isMousePressed )
+		if( !wasTemporaryLost && (!isMousePressed || selectAllOnMouseClick) )
 			selectAllOnFocusGained();
 		wasTemporaryLost = false;
 		wasFocused = true;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatCheckBoxUI.java

@@ -42,12 +42,8 @@ import javax.swing.plaf.ComponentUI;
 public class FlatCheckBoxUI
 	extends FlatRadioButtonUI
 {
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatCheckBoxUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatCheckBoxUI.class, FlatCheckBoxUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java

@@ -24,10 +24,12 @@ import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
 import java.awt.Insets;
 import java.awt.LayoutManager;
 import java.awt.Rectangle;
 import java.awt.Shape;
+import java.awt.Toolkit;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
@@ -47,6 +49,7 @@ import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JList;
 import javax.swing.JPanel;
+import javax.swing.JScrollBar;
 import javax.swing.JTextField;
 import javax.swing.KeyStroke;
 import javax.swing.ListCellRenderer;
@@ -82,7 +85,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault ComboBox.editorColumns			int
  * @uiDefault ComboBox.maximumRowCount			int
  * @uiDefault ComboBox.buttonStyle				String	auto (default), button or none
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault Component.borderColor				Color
  * @uiDefault Component.disabledBorderColor		Color
@@ -297,6 +300,10 @@ public class FlatComboBoxUI
 	protected void configureEditor() {
 		super.configureEditor();
 
+		// remove default text field border from editor
+		if( editor instanceof JTextField && ((JTextField)editor).getBorder() instanceof FlatTextBorder )
+			((JTextField)editor).setBorder( BorderFactory.createEmptyBorder() );
+
 		// explicitly make non-opaque
 		if( editor instanceof JComponent )
 			((JComponent)editor).setOpaque( false );
@@ -306,7 +313,7 @@ public class FlatComboBoxUI
 		updateEditorColors();
 
 		// macOS
-		if( SystemInfo.IS_MAC && editor instanceof JTextComponent ) {
+		if( SystemInfo.isMacOS && editor instanceof JTextComponent ) {
 			// delegate actions from editor text field to combobox, which is necessary
 			// because text field on macOS already handle those keys
 			InputMap inputMap = ((JTextComponent)editor).getInputMap();
@@ -345,7 +352,7 @@ public class FlatComboBoxUI
 			FlatUIUtils.paintParentBackground( g, c );
 
 		Graphics2D g2 = (Graphics2D) g;
-		FlatUIUtils.setRenderingHints( g2 );
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g2 );
 
 		int width = c.getWidth();
 		int height = c.getHeight();
@@ -379,6 +386,9 @@ public class FlatComboBoxUI
 			g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2)) );
 		}
 
+		// avoid that the "current value" renderer is invoked with enabled antialiasing
+		FlatUIUtils.resetRenderingHints( g2, oldRenderingHints );
+
 		paint( g, c );
 	}
 
@@ -544,13 +554,37 @@ public class FlatComboBoxUI
 
 		@Override
 		protected Rectangle computePopupBounds( int px, int py, int pw, int ph ) {
-			// get maximum display size of all items
-			Dimension displaySize = getDisplaySize();
+			// get maximum display width of all items
+			int displayWidth = getDisplaySize().width;
+
+			// add border insets
+			for( Border border : new Border[] { scroller.getViewportBorder(), scroller.getBorder() } ) {
+				if( border != null ) {
+					Insets borderInsets = border.getBorderInsets( null );
+					displayWidth += borderInsets.left + borderInsets.right;
+				}
+			}
+
+			// add width of vertical scroll bar
+			JScrollBar verticalScrollBar = scroller.getVerticalScrollBar();
+			if( verticalScrollBar != null )
+				displayWidth += verticalScrollBar.getPreferredSize().width;
 
 			// make popup wider if necessary
-			if( displaySize.width > pw ) {
-				int diff = displaySize.width - pw;
-				pw = displaySize.width;
+			if( displayWidth > pw ) {
+				// limit popup width to screen width
+				GraphicsConfiguration gc = comboBox.getGraphicsConfiguration();
+				if( gc != null ) {
+					Rectangle screenBounds = gc.getBounds();
+					Insets screenInsets = Toolkit.getDefaultToolkit().getScreenInsets( gc );
+					displayWidth = Math.min( displayWidth, screenBounds.width - screenInsets.left - screenInsets.right );
+				} else {
+					Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
+					displayWidth = Math.min( displayWidth, screenSize.width );
+				}
+
+				int diff = displayWidth - pw;
+				pw = displayWidth;
 
 				if( !comboBox.getComponentOrientation().isLeftToRight() )
 					px -= diff;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatEmptyBorder.java

@@ -57,4 +57,8 @@ public class FlatEmptyBorder
 		insets.bottom = scale( bottom );
 		return insets;
 	}
+
+	public Insets getUnscaledBorderInsets() {
+		return super.getBorderInsets();
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatFormattedTextFieldUI.java

@@ -45,6 +45,7 @@ import javax.swing.plaf.ComponentUI;
  * @uiDefault Component.isIntelliJTheme					boolean
  * @uiDefault FormattedTextField.placeholderForeground	Color
  * @uiDefault TextComponent.selectAllOnFocusPolicy		String	never, once (default) or always
+ * @uiDefault TextComponent.selectAllOnMouseClick		boolean
  *
  * @author Karl Tauber
  */

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatInternalFrameTitlePane.java

@@ -92,7 +92,21 @@ public class FlatInternalFrameTitlePane
 		updateFrameIcon();
 		updateColors();
 
-		buttonPanel = new JPanel();
+		buttonPanel = new JPanel() {
+			@Override
+			public Dimension getPreferredSize() {
+				Dimension size = super.getPreferredSize();
+				int height = size.height;
+				// use height of invisible buttons to always have same title pane height
+				if( !iconButton.isVisible() )
+					height = Math.max( height, iconButton.getPreferredSize().height );
+				if( !maxButton.isVisible() )
+					height = Math.max( height, maxButton.getPreferredSize().height );
+				if( !closeButton.isVisible() )
+					height = Math.max( height, closeButton.getPreferredSize().height );
+				return new Dimension( size.width, height );
+			}
+		};
 		buttonPanel.setLayout( new BoxLayout( buttonPanel, BoxLayout.LINE_AXIS ) );
 		buttonPanel.setOpaque( false );
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatInternalFrameUI.java

@@ -84,6 +84,8 @@ import javax.swing.plaf.basic.BasicInternalFrameUI;
 public class FlatInternalFrameUI
 	extends BasicInternalFrameUI
 {
+	protected FlatWindowResizer windowResizer;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatInternalFrameUI( (JInternalFrame) c );
 	}
@@ -97,6 +99,18 @@ public class FlatInternalFrameUI
 		super.installUI( c );
 
 		LookAndFeel.installProperty( frame, "opaque", false );
+
+		windowResizer = createWindowResizer();
+	}
+
+	@Override
+	public void uninstallUI( JComponent c ) {
+		super.uninstallUI( c );
+
+		if( windowResizer != null ) {
+			windowResizer.uninstall();
+			windowResizer = null;
+		}
 	}
 
 	@Override
@@ -104,6 +118,10 @@ public class FlatInternalFrameUI
 		return new FlatInternalFrameTitlePane( w );
 	}
 
+	protected FlatWindowResizer createWindowResizer() {
+		return new FlatWindowResizer.InternalFrameResizer( frame, this::getDesktopManager );
+	}
+
 	//---- class FlatInternalFrameBorder --------------------------------------
 
 	public static class FlatInternalFrameBorder

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatLabelUI.java

@@ -56,12 +56,8 @@ public class FlatLabelUI
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatLabelUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatLabelUI.class, FlatLabelUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatListUI.java

@@ -126,6 +126,9 @@ public class FlatListUI
 	 * or the application has to be changed to extend a FlatLaf renderer.
 	 */
 	private void toggleSelectionColors() {
+		if( list == null )
+			return;
+
 		if( FlatUIUtils.isPermanentFocusOwner( list ) ) {
 			if( list.getSelectionBackground() == selectionInactiveBackground )
 				list.setSelectionBackground( selectionBackground );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarBorder.java

@@ -20,9 +20,7 @@ import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics;
-import java.awt.Graphics2D;
 import java.awt.Insets;
-import java.awt.geom.Rectangle2D;
 import javax.swing.JMenuBar;
 import javax.swing.UIManager;
 
@@ -40,16 +38,8 @@ public class FlatMenuBarBorder
 
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
-		Graphics2D g2 = (Graphics2D) g.create();
-		try {
-			float lineHeight = scale( (float) 1 );
-
-			FlatUIUtils.setRenderingHints( g2 );
-			g2.setColor( borderColor );
-			g2.fill( new Rectangle2D.Float( x, y + height - lineHeight, width, lineHeight ) );
-		} finally {
-			g2.dispose();
-		}
+		float lineHeight = scale( (float) 1 );
+		FlatUIUtils.paintFilledRectangle( g, borderColor, x, y + height - lineHeight, width, lineHeight );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java

@@ -82,7 +82,7 @@ public class FlatMenuBarUI
 			JMenuBar menuBar = (JMenuBar) e.getSource();
 			JMenu menu = menuBar.getMenu( 0 );
 			if( menu != null ) {
-				MenuSelectionManager.defaultManager().setSelectedPath( SystemInfo.IS_WINDOWS
+				MenuSelectionManager.defaultManager().setSelectedPath( SystemInfo.isWindows
 					? new MenuElement[] { menuBar, menu }
 					: new MenuElement[] { menuBar, menu, menu.getPopupMenu() } );
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuItemRenderer.java

@@ -39,8 +39,10 @@ import javax.swing.UIManager;
 import javax.swing.plaf.basic.BasicHTML;
 import javax.swing.text.View;
 import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.util.DerivedColor;
 import com.formdev.flatlaf.util.Graphics2DProxy;
 import com.formdev.flatlaf.util.HiDPIUtils;
+import com.formdev.flatlaf.util.SystemInfo;
 
 /**
  * Renderer for menu items.
@@ -54,7 +56,7 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  * @uiDefault MenuItem.underlineSelectionBackground					Color
  * @uiDefault MenuItem.underlineSelectionCheckBackground			Color
  * @uiDefault MenuItem.underlineSelectionColor						Color
- * @uiDefault MenuItem.underlineSelectionHeight						Color
+ * @uiDefault MenuItem.underlineSelectionHeight						int
  *
  * @author Karl Tauber
  */
@@ -245,8 +247,11 @@ public class FlatMenuItemRenderer
 		g.setColor( Color.orange ); g.drawRect( arrowRect.x, arrowRect.y, arrowRect.width - 1, arrowRect.height - 1 );
 debug*/
 
-		paintBackground( g, selectionBackground );
-		paintIcon( g, iconRect, getIconForPainting() );
+		boolean underlineSelection = isUnderlineSelection();
+		paintBackground( g, underlineSelection ? underlineSelectionBackground : selectionBackground );
+		if( underlineSelection && isArmedOrSelected( menuItem ) )
+			paintUnderlineSelection( g, underlineSelectionColor, underlineSelectionHeight );
+		paintIcon( g, iconRect, getIconForPainting(), underlineSelection ? underlineSelectionCheckBackground : checkBackground );
 		paintText( g, textRect, menuItem.getText(), selectionForeground, disabledForeground );
 		paintAccelerator( g, accelRect, getAcceleratorText(), acceleratorForeground, acceleratorSelectionForeground, disabledForeground );
 		if( !isTopLevelMenu( menuItem ) )
@@ -256,36 +261,36 @@ debug*/
 	protected void paintBackground( Graphics g, Color selectionBackground ) {
 		boolean armedOrSelected = isArmedOrSelected( menuItem );
 		if( menuItem.isOpaque() || armedOrSelected ) {
-			int width = menuItem.getWidth();
-			int height = menuItem.getHeight();
-
 			// paint background
 			g.setColor( armedOrSelected
-				? (isUnderlineSelection()
-					? deriveBackground( underlineSelectionBackground )
-					: selectionBackground)
+				? deriveBackground( selectionBackground )
 				: menuItem.getBackground() );
-			g.fillRect( 0, 0, width, height );
+			g.fillRect( 0, 0, menuItem.getWidth(), menuItem.getHeight() );
+		}
+	}
 
-			// paint underline
-			if( armedOrSelected && isUnderlineSelection() ) {
-				int underlineHeight = scale( underlineSelectionHeight );
-				g.setColor( underlineSelectionColor );
-				if( isTopLevelMenu( menuItem ) ) {
-					// paint underline at bottom
-					g.fillRect( 0, height - underlineHeight, width, underlineHeight );
-				} else if( menuItem.getComponentOrientation().isLeftToRight() ) {
-					// paint underline at left side
-					g.fillRect( 0, 0, underlineHeight, height );
-				} else {
-					// paint underline at right side
-					g.fillRect( width - underlineHeight, 0, underlineHeight, height );
-				}
-			}
+	protected void paintUnderlineSelection( Graphics g, Color underlineSelectionColor, int underlineSelectionHeight ) {
+		int width = menuItem.getWidth();
+		int height = menuItem.getHeight();
+
+		int underlineHeight = scale( underlineSelectionHeight );
+		g.setColor( underlineSelectionColor );
+		if( isTopLevelMenu( menuItem ) ) {
+			// paint underline at bottom
+			g.fillRect( 0, height - underlineHeight, width, underlineHeight );
+		} else if( menuItem.getComponentOrientation().isLeftToRight() ) {
+			// paint underline at left side
+			g.fillRect( 0, 0, underlineHeight, height );
+		} else {
+			// paint underline at right side
+			g.fillRect( width - underlineHeight, 0, underlineHeight, height );
 		}
 	}
 
 	protected Color deriveBackground( Color background ) {
+		if( !(background instanceof DerivedColor) )
+			return background;
+
 		Color baseColor = menuItem.isOpaque()
 			? menuItem.getBackground()
 			: FlatUIUtils.getParentBackground( menuItem );
@@ -293,12 +298,12 @@ debug*/
 		return FlatUIUtils.deriveColor( background, baseColor );
 	}
 
-	protected void paintIcon( Graphics g, Rectangle iconRect, Icon icon ) {
+	protected void paintIcon( Graphics g, Rectangle iconRect, Icon icon, Color checkBackground ) {
 		// if checkbox/radiobutton menu item is selected and also has a custom icon,
 		// then use filled icon background to indicate selection (instead of using checkIcon)
 		if( menuItem.isSelected() && checkIcon != null && icon != checkIcon ) {
 			Rectangle r = FlatUIUtils.addInsets( iconRect, scale( checkMargins ) );
-			g.setColor( deriveBackground( isUnderlineSelection() ? underlineSelectionCheckBackground : checkBackground ) );
+			g.setColor( deriveBackground( checkBackground ) );
 			g.fillRect( r.x, r.y, r.width, r.height );
 		}
 
@@ -418,36 +423,78 @@ debug*/
 
 	private KeyStroke cachedAccelerator;
 	private String cachedAcceleratorText;
+	private boolean cachedAcceleratorLeftToRight;
 
 	private String getAcceleratorText() {
 		KeyStroke accelerator = menuItem.getAccelerator();
 		if( accelerator == null )
 			return null;
 
-		if( accelerator == cachedAccelerator )
+		boolean leftToRight = menuItem.getComponentOrientation().isLeftToRight();
+
+		if( accelerator == cachedAccelerator && leftToRight == cachedAcceleratorLeftToRight )
 			return cachedAcceleratorText;
 
 		cachedAccelerator = accelerator;
 		cachedAcceleratorText = getTextForAccelerator( accelerator );
+		cachedAcceleratorLeftToRight = leftToRight;
 
 		return cachedAcceleratorText;
 	}
 
 	protected String getTextForAccelerator( KeyStroke accelerator ) {
 		StringBuilder buf = new StringBuilder();
-		int modifiers = accelerator.getModifiers();
-		if( modifiers != 0 )
-			buf.append( InputEvent.getModifiersExText( modifiers ) ).append( acceleratorDelimiter );
+		boolean leftToRight = menuItem.getComponentOrientation().isLeftToRight();
 
+		// modifiers
+		int modifiers = accelerator.getModifiers();
+		if( modifiers != 0 ) {
+			if( SystemInfo.isMacOS ) {
+				if( leftToRight )
+					buf.append( getMacOSModifiersExText( modifiers, leftToRight ) );
+			} else
+				buf.append( InputEvent.getModifiersExText( modifiers ) ).append( acceleratorDelimiter );
+		}
+
+		// key
 		int keyCode = accelerator.getKeyCode();
 		if( keyCode != 0 )
 			buf.append( KeyEvent.getKeyText( keyCode ) );
 		else
 			buf.append( accelerator.getKeyChar() );
 
+		// modifiers if right-to-left on macOS
+		if( modifiers != 0 && !leftToRight && SystemInfo.isMacOS )
+			buf.append( getMacOSModifiersExText( modifiers, leftToRight ) );
+
 		return buf.toString();
 	}
 
+	protected String getMacOSModifiersExText( int modifiers, boolean leftToRight ) {
+		StringBuilder buf = new StringBuilder();
+
+		if( (modifiers & InputEvent.CTRL_DOWN_MASK) != 0 )
+			buf.append( controlGlyph );
+		if( (modifiers & (InputEvent.ALT_DOWN_MASK | InputEvent.ALT_GRAPH_DOWN_MASK)) != 0 )
+			buf.append( optionGlyph );
+		if( (modifiers & InputEvent.SHIFT_DOWN_MASK) != 0 )
+			buf.append( shiftGlyph );
+		if( (modifiers & InputEvent.META_DOWN_MASK) != 0 )
+			buf.append( commandGlyph );
+
+		// reverse order for right-to-left
+		if( !leftToRight )
+			buf.reverse();
+
+		return buf.toString();
+	}
+
+	private static final char
+		controlGlyph = 0x2303,
+		optionGlyph = 0x2325,
+		shiftGlyph = 0x21E7,
+		commandGlyph = 0x2318;
+
 	//---- class MinSizeIcon --------------------------------------------------
 
 	private class MinSizeIcon

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuUI.java

@@ -62,6 +62,12 @@ import javax.swing.plaf.basic.BasicMenuUI;
  * @uiDefault MenuItem.iconTextGap									int
  * @uiDefault MenuBar.hoverBackground								Color
  *
+ * <!-- FlatMenuRenderer -->
+ *
+ * @uiDefault MenuBar.underlineSelectionBackground					Color
+ * @uiDefault MenuBar.underlineSelectionColor						Color
+ * @uiDefault MenuBar.underlineSelectionHeight						int
+ *
  * @author Karl Tauber
  */
 public class FlatMenuUI
@@ -123,6 +129,14 @@ public class FlatMenuUI
 		};
 	}
 
+	@Override
+	public Dimension getMinimumSize( JComponent c ) {
+		// avoid that top-level menus (in menu bar) are made smaller if horizontal space is rare
+		// same code is in BasicMenuUI since Java 10
+		// see https://bugs.openjdk.java.net/browse/JDK-8178430
+		return ((JMenu)menuItem).isTopLevelMenu() ? c.getPreferredSize() : null;
+	}
+
 	@Override
 	protected Dimension getPreferredMenuItemSize( JComponent c, Icon checkIcon, Icon arrowIcon, int defaultTextIconGap ) {
 		return renderer.getPreferredMenuItemSize();
@@ -139,6 +153,10 @@ public class FlatMenuUI
 	protected class FlatMenuRenderer
 		extends FlatMenuItemRenderer
 	{
+		protected final Color menuBarUnderlineSelectionBackground = FlatUIUtils.getUIColor( "MenuBar.underlineSelectionBackground", underlineSelectionBackground );
+		protected final Color menuBarUnderlineSelectionColor = FlatUIUtils.getUIColor( "MenuBar.underlineSelectionColor", underlineSelectionColor );
+		protected final int menuBarUnderlineSelectionHeight = FlatUIUtils.getUIInt( "MenuBar.underlineSelectionHeight", underlineSelectionHeight );
+
 		protected FlatMenuRenderer( JMenuItem menuItem, Icon checkIcon, Icon arrowIcon,
 			Font acceleratorFont, String acceleratorDelimiter )
 		{
@@ -147,6 +165,9 @@ public class FlatMenuUI
 
 		@Override
 		protected void paintBackground( Graphics g, Color selectionBackground ) {
+			if( isUnderlineSelection() && ((JMenu)menuItem).isTopLevelMenu() )
+				selectionBackground = menuBarUnderlineSelectionBackground;
+
 			ButtonModel model = menuItem.getModel();
 			if( model.isRollover() && !model.isArmed() && !model.isSelected() &&
 				model.isEnabled() && ((JMenu)menuItem).isTopLevelMenu() )
@@ -156,5 +177,15 @@ public class FlatMenuUI
 			} else
 				super.paintBackground( g, selectionBackground );
 		}
+
+		@Override
+		protected void paintUnderlineSelection( Graphics g, Color underlineSelectionColor, int underlineSelectionHeight ) {
+			if( ((JMenu)menuItem).isTopLevelMenu() ) {
+				underlineSelectionColor = menuBarUnderlineSelectionColor;
+				underlineSelectionHeight = menuBarUnderlineSelectionHeight;
+			}
+
+			super.paintUnderlineSelection( g, underlineSelectionColor, underlineSelectionHeight );
+		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPanelUI.java

@@ -35,11 +35,7 @@ import javax.swing.plaf.basic.BasicPanelUI;
 public class FlatPanelUI
 	extends BasicPanelUI
 {
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatPanelUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatPanelUI.class, FlatPanelUI::new );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPasswordFieldUI.java

@@ -60,8 +60,10 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  * @uiDefault Component.minimumWidth				int
  * @uiDefault Component.isIntelliJTheme				boolean
  * @uiDefault PasswordField.placeholderForeground	Color
+ * @uiDefault PasswordField.showCapsLock			boolean
  * @uiDefault PasswordField.capsLockIcon			Icon
  * @uiDefault TextComponent.selectAllOnFocusPolicy	String	never, once (default) or always
+ * @uiDefault TextComponent.selectAllOnMouseClick	boolean
  *
  * @author Karl Tauber
  */
@@ -71,6 +73,7 @@ public class FlatPasswordFieldUI
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
 	protected Color placeholderForeground;
+	protected boolean showCapsLock;
 	protected Icon capsLockIcon;
 
 	private FocusListener focusListener;
@@ -88,6 +91,7 @@ public class FlatPasswordFieldUI
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
 		placeholderForeground = UIManager.getColor( prefix + ".placeholderForeground" );
+		showCapsLock = UIManager.getBoolean( "PasswordField.showCapsLock" );
 		capsLockIcon = UIManager.getIcon( "PasswordField.capsLockIcon" );
 
 		LookAndFeel.installProperty( getComponent(), "opaque", false );
@@ -141,7 +145,8 @@ public class FlatPasswordFieldUI
 
 	@Override
 	protected Caret createCaret() {
-		return new FlatCaret( UIManager.getString( "TextComponent.selectAllOnFocusPolicy" ) );
+		return new FlatCaret( UIManager.getString( "TextComponent.selectAllOnFocusPolicy" ),
+			UIManager.getBoolean( "TextComponent.selectAllOnMouseClick" ) );
 	}
 
 	@Override
@@ -160,6 +165,9 @@ public class FlatPasswordFieldUI
 	}
 
 	protected void paintCapsLock( Graphics g ) {
+		if( !showCapsLock )
+			return;
+
 		JTextComponent c = getComponent();
 		if( !FlatUIUtils.isPermanentFocusOwner( c ) ||
 			!Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK ) )

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupFactory.java

@@ -21,6 +21,7 @@ import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Insets;
+import java.awt.MouseInfo;
 import java.awt.Panel;
 import java.awt.Point;
 import java.awt.Rectangle;
@@ -32,6 +33,8 @@ import java.lang.reflect.Method;
 import javax.swing.JComponent;
 import javax.swing.JLayeredPane;
 import javax.swing.JPanel;
+import javax.swing.JToolTip;
+import javax.swing.JWindow;
 import javax.swing.Popup;
 import javax.swing.PopupFactory;
 import javax.swing.RootPaneContainer;
@@ -40,6 +43,7 @@ import javax.swing.UIManager;
 import javax.swing.border.Border;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * A popup factory that adds drop shadows to popups on Windows.
@@ -58,39 +62,111 @@ public class FlatPopupFactory
 	public Popup getPopup( Component owner, Component contents, int x, int y )
 		throws IllegalArgumentException
 	{
-		if( !isDropShadowPainted( owner, contents ) )
-			return new NonFlashingPopup( super.getPopup( owner, contents, x, y ), contents );
-
-		// macOS and Linux adds drop shadow to heavy weight popups
-		if( SystemInfo.IS_MAC || SystemInfo.IS_LINUX ) {
-			Popup popup = getHeavyWeightPopup( owner, contents, x, y );
-			if( popup == null )
-				popup = super.getPopup( owner, contents, x, y );
-			return new NonFlashingPopup( popup, contents );
+		Point pt = fixToolTipLocation( owner, contents, x, y );
+		if( pt != null ) {
+			x = pt.x;
+			y = pt.y;
 		}
 
+		boolean forceHeavyWeight = isOptionEnabled( owner, contents, FlatClientProperties.POPUP_FORCE_HEAVY_WEIGHT, "Popup.forceHeavyWeight" );
+
+		if( !isOptionEnabled( owner, contents, FlatClientProperties.POPUP_DROP_SHADOW_PAINTED, "Popup.dropShadowPainted" ) )
+			return new NonFlashingPopup( getPopupForScreenOfOwner( owner, contents, x, y, forceHeavyWeight ), contents );
+
+		// macOS and Linux adds drop shadow to heavy weight popups
+		if( SystemInfo.isMacOS || SystemInfo.isLinux )
+			return new NonFlashingPopup( getPopupForScreenOfOwner( owner, contents, x, y, true ), contents );
+
 		// create drop shadow popup
-		return new DropShadowPopup( super.getPopup( owner, contents, x, y ), owner, contents );
+		return new DropShadowPopup( getPopupForScreenOfOwner( owner, contents, x, y, forceHeavyWeight ), owner, contents );
 	}
 
-	private boolean isDropShadowPainted( Component owner, Component contents ) {
-		Boolean b = isDropShadowPainted( owner );
-		if( b != null )
-			return b;
+	/**
+	 * Creates a popup for the screen that the owner component is on.
+	 * <p>
+	 * PopupFactory caches heavy weight popup windows and reuses them.
+	 * On a dual screen setup, if the popup owner has moved from one screen to the other one,
+	 * then the cached heavy weight popup window may be connected to the wrong screen.
+	 * If the two screens use different scaling factors, then the popup location and size
+	 * is scaled when the popup becomes visible, which shows the popup in the wrong location
+	 * (or on wrong screen). The re-scaling is done in WWindowPeer.setBounds() (Java 9+).
+	 * <p>
+	 * To fix this, dispose popup windows that are on wrong screen and get new popup.
+	 * <p>
+	 * This is a workaround for https://bugs.openjdk.java.net/browse/JDK-8224608
+	 */
+	private Popup getPopupForScreenOfOwner( Component owner, Component contents, int x, int y, boolean forceHeavyWeight )
+		throws IllegalArgumentException
+	{
+		int count = 0;
 
-		b = isDropShadowPainted( contents );
-		if( b != null )
-			return b;
+		for(;;) {
+			// create new or get cached popup
+			Popup popup = forceHeavyWeight
+				? getHeavyWeightPopup( owner, contents, x, y )
+				: super.getPopup( owner, contents, x, y );
 
-		return UIManager.getBoolean( "Popup.dropShadowPainted" );
+			// get heavy weight popup window; is null for non-heavy weight popup
+			Window popupWindow = SwingUtilities.windowForComponent( contents );
+
+			// check whether heavy weight popup window is on same screen as owner component
+			if( popupWindow == null ||
+				popupWindow.getGraphicsConfiguration() == owner.getGraphicsConfiguration() )
+			  return popup;
+
+			// remove contents component from popup window
+			if( popupWindow instanceof JWindow )
+				((JWindow)popupWindow).getContentPane().removeAll();
+
+			// dispose unused popup
+			// (do not invoke popup.hide() because this would cache the popup window)
+			popupWindow.dispose();
+
+			// avoid endless loop (should newer happen; PopupFactory cache size is 5)
+			if( ++count > 10 )
+				return popup;
+		}
 	}
 
-	private Boolean isDropShadowPainted( Component c ) {
-		if( !(c instanceof JComponent) )
-			return null;
+	/**
+	 * Shows the given popup and, if necessary, fixes the location of a heavy weight popup window.
+	 * <p>
+	 * On a dual screen setup, where screens use different scale factors, it may happen
+	 * that the window location changes when showing a heavy weight popup window.
+	 * E.g. when opening an dialog on the secondary screen and making combobox popup visible.
+	 * <p>
+	 * This is a workaround for https://bugs.openjdk.java.net/browse/JDK-8224608
+	 */
+	private static void showPopupAndFixLocation( Popup popup, Window popupWindow ) {
+		if( popupWindow != null ) {
+			// remember location of heavy weight popup window
+			int x = popupWindow.getX();
+			int y = popupWindow.getY();
 
-		Object value = ((JComponent)c).getClientProperty( FlatClientProperties.POPUP_DROP_SHADOW_PAINTED );
-		return (value instanceof Boolean ) ? (Boolean) value : null;
+			popup.show();
+
+			// restore popup window location if it has changed
+			// (probably scaled when screens use different scale factors)
+			if( popupWindow.getX() != x || popupWindow.getY() != y )
+				popupWindow.setLocation( x, y );
+		} else
+			popup.show();
+	}
+
+	private boolean isOptionEnabled( Component owner, Component contents, String clientKey, String uiKey ) {
+		if( owner instanceof JComponent ) {
+			Boolean b = FlatClientProperties.clientPropertyBooleanStrict( (JComponent) owner, clientKey, null );
+			if( b != null )
+				return b;
+		}
+
+		if( contents instanceof JComponent ) {
+			Boolean b = FlatClientProperties.clientPropertyBooleanStrict( (JComponent) contents, clientKey, null );
+			if( b != null )
+				return b;
+		}
+
+		return UIManager.getBoolean( uiKey );
 	}
 
 	/**
@@ -105,7 +181,7 @@ public class FlatPopupFactory
 		throws IllegalArgumentException
 	{
 		try {
-			if( SystemInfo.IS_JAVA_9_OR_LATER ) {
+			if( SystemInfo.isJava_9_orLater ) {
 				if( java9getPopupMethod == null ) {
 					java9getPopupMethod = PopupFactory.class.getDeclaredMethod(
 						"getPopup", Component.class, Component.class, int.class, int.class, boolean.class );
@@ -126,12 +202,48 @@ public class FlatPopupFactory
 		}
 	}
 
+	/**
+	 * Usually ToolTipManager places a tooltip at (mouseLocation.x, mouseLocation.y + 20).
+	 * In case that the tooltip would be partly outside of the screen,
+	 * ToolTipManagerthe changes the location so that the entire tooltip fits on screen.
+	 * But this can place the tooltip under the mouse location and hide the owner component.
+	 * <p>
+	 * This method checks whether the current mouse location is within tooltip bounds
+	 * and corrects the y-location so that the tooltip is placed above the mouse location.
+	 */
+	private Point fixToolTipLocation( Component owner, Component contents, int x, int y ) {
+		if( !(contents instanceof JToolTip) || !wasInvokedFromToolTipManager() )
+			return null;
+
+		Point mouseLocation = MouseInfo.getPointerInfo().getLocation();
+		Dimension tipSize = contents.getPreferredSize();
+
+		// check whether mouse location is within tooltip bounds
+		Rectangle tipBounds = new Rectangle( x, y, tipSize.width, tipSize.height );
+		if( !tipBounds.contains( mouseLocation ) )
+			return null;
+
+		// place tooltip above mouse location
+		return new Point( x, mouseLocation.y - tipSize.height - UIScale.scale( 20 ) );
+	}
+
+	private boolean wasInvokedFromToolTipManager() {
+		StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+		for( StackTraceElement stackTraceElement : stackTrace ) {
+			if( "javax.swing.ToolTipManager".equals( stackTraceElement.getClassName() ) &&
+				"showTipWindow".equals( stackTraceElement.getMethodName() ) )
+			  return true;
+		}
+		return false;
+	}
+
 	//---- class NonFlashingPopup ---------------------------------------------
 
 	private class NonFlashingPopup
 		extends Popup
 	{
 		private Popup delegate;
+		private Component contents;
 
 		// heavy weight
 		protected Window popupWindow;
@@ -139,6 +251,7 @@ public class FlatPopupFactory
 
 		NonFlashingPopup( Popup delegate, Component contents ) {
 			this.delegate = delegate;
+			this.contents = contents;
 
 			popupWindow = SwingUtilities.windowForComponent( contents );
 			if( popupWindow != null ) {
@@ -153,8 +266,26 @@ public class FlatPopupFactory
 
 		@Override
 		public void show() {
-			if( delegate != null )
-				delegate.show();
+			if( delegate != null ) {
+				showPopupAndFixLocation( delegate, popupWindow );
+
+				// increase tooltip size if necessary because it may be too small on HiDPI screens
+				//    https://bugs.openjdk.java.net/browse/JDK-8213535
+				if( contents instanceof JToolTip && popupWindow == null ) {
+					Container parent = contents.getParent();
+					if( parent instanceof JPanel ) {
+						Dimension prefSize = parent.getPreferredSize();
+						if( !prefSize.equals( parent.getSize() ) ) {
+							Container mediumWeightPanel = SwingUtilities.getAncestorOfClass( Panel.class, parent );
+							Container c = (mediumWeightPanel != null)
+								? mediumWeightPanel // medium weight popup
+								: parent;           // light weight popup
+							c.setSize( prefSize );
+							c.validate();
+						}
+					}
+				}
+			}
 		}
 
 		@Override
@@ -162,6 +293,7 @@ public class FlatPopupFactory
 			if( delegate != null ) {
 				delegate.hide();
 				delegate = null;
+				contents = null;
 			}
 
 			if( popupWindow != null ) {
@@ -228,7 +360,7 @@ public class FlatPopupFactory
 				// create heavy weight popup for drop shadow
 				int x = popupWindow.getX() - insets.left;
 				int y = popupWindow.getY() - insets.top;
-				dropShadowDelegate = getHeavyWeightPopup( owner, dropShadowPanel, x, y );
+				dropShadowDelegate = getPopupForScreenOfOwner( owner, dropShadowPanel, x, y, true );
 
 				// make drop shadow popup window translucent
 				dropShadowWindow = SwingUtilities.windowForComponent( dropShadowPanel );
@@ -270,7 +402,7 @@ public class FlatPopupFactory
 		@Override
 		public void show() {
 			if( dropShadowDelegate != null )
-				dropShadowDelegate.show();
+				showPopupAndFixLocation( dropShadowDelegate, dropShadowWindow );
 
 			if( mediumWeightPanel != null )
 				showMediumWeightDropShadow();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupMenuSeparatorUI.java

@@ -38,12 +38,8 @@ import javax.swing.plaf.ComponentUI;
 public class FlatPopupMenuSeparatorUI
 	extends FlatSeparatorUI
 {
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatPopupMenuSeparatorUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatPopupMenuSeparatorUI.class, FlatPopupMenuSeparatorUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatProgressBarUI.java

@@ -155,7 +155,7 @@ public class FlatProgressBarUI
 			? 0
 			: Math.min( UIScale.scale( this.arc ), horizontal ? height : width );
 
-		FlatUIUtils.setRenderingHints( (Graphics2D) g );
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g );
 
 		// paint track
 		RoundRectangle2D.Float trackShape = new RoundRectangle2D.Float( x, y, width, height, arc, arc );
@@ -163,6 +163,7 @@ public class FlatProgressBarUI
 		((Graphics2D)g).fill( trackShape );
 
 		// paint progress
+		int amountFull = 0;
 		if( progressBar.isIndeterminate() ) {
 			boxRect = getBox( boxRect );
 			if( boxRect != null ) {
@@ -170,11 +171,8 @@ public class FlatProgressBarUI
 				((Graphics2D)g).fill( new RoundRectangle2D.Float( boxRect.x, boxRect.y,
 					boxRect.width, boxRect.height, arc, arc ) );
 			}
-
-			if( progressBar.isStringPainted() )
-				paintString( g, x, y, width, height, 0, insets );
 		} else {
-			int amountFull = getAmountFull( insets, width, height );
+			amountFull = getAmountFull( insets, width, height );
 
 			RoundRectangle2D.Float progressShape = horizontal
 				? new RoundRectangle2D.Float( c.getComponentOrientation().isLeftToRight() ? x : x + (width - amountFull),
@@ -189,10 +187,12 @@ public class FlatProgressBarUI
 				((Graphics2D)g).fill( area );
 			} else
 				((Graphics2D)g).fill( progressShape );
-
-			if( progressBar.isStringPainted() )
-				paintString( g, x, y, width, height, amountFull, insets );
 		}
+
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
+
+		if( progressBar.isStringPainted() )
+			paintString( g, x, y, width, height, amountFull, insets );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRadioButtonUI.java

@@ -60,12 +60,8 @@ public class FlatRadioButtonUI
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatRadioButtonUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatRadioButtonUI.class, FlatRadioButtonUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRootPaneUI.java

@@ -37,6 +37,7 @@ import javax.swing.JMenuBar;
 import javax.swing.JRootPane;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
+import javax.swing.border.Border;
 import javax.swing.plaf.BorderUIResource;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
@@ -45,6 +46,7 @@ import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JRootPane}.
@@ -54,6 +56,7 @@ import com.formdev.flatlaf.util.SystemInfo;
  * @uiDefault RootPane.border								Border
  * @uiDefault RootPane.activeBorderColor					Color
  * @uiDefault RootPane.inactiveBorderColor					Color
+ * @uiDefault TitlePane.borderColor							Color	optional
  *
  * <!-- FlatWindowResizer -->
  *
@@ -69,7 +72,9 @@ public class FlatRootPaneUI
 {
 	// check this field before using class JBRCustomDecorations to avoid unnecessary loading of that class
 	static final boolean canUseJBRCustomDecorations
-		= SystemInfo.IS_JETBRAINS_JVM_11_OR_LATER && SystemInfo.IS_WINDOWS_10_OR_LATER;
+		= SystemInfo.isJetBrainsJVM_11_orLater && SystemInfo.isWindows_10_orLater;
+
+	protected final Color borderColor = UIManager.getColor( "TitlePane.borderColor" );
 
 	protected JRootPane rootPane;
 	protected FlatTitlePane titlePane;
@@ -89,11 +94,21 @@ public class FlatRootPaneUI
 
 		if( rootPane.getWindowDecorationStyle() != JRootPane.NONE )
 			installClientDecorations();
+		else
+			installBorder();
 
 		if( canUseJBRCustomDecorations )
 			JBRCustomDecorations.install( rootPane );
 	}
 
+	protected void installBorder() {
+		if( borderColor != null ) {
+			Border b = rootPane.getBorder();
+			if( b == null || b instanceof UIResource )
+				rootPane.setBorder( new FlatWindowTitleBorder( borderColor ) );
+		}
+	}
+
 	@Override
 	public void uninstallUI( JComponent c ) {
 		super.uninstallUI( c );
@@ -119,11 +134,8 @@ public class FlatRootPaneUI
 		}
 
 		// enable dark window appearance on macOS when running in JetBrains Runtime
-		if( SystemInfo.IS_JETBRAINS_JVM && SystemInfo.IS_MAC_OS_10_14_MOJAVE ) {
-			LookAndFeel laf = UIManager.getLookAndFeel();
-			boolean isDark = laf instanceof FlatLaf && ((FlatLaf)laf).isDark();
-			c.putClientProperty( "jetbrains.awt.windowDarkAppearance", isDark );
-		}
+		if( SystemInfo.isJetBrainsJVM && SystemInfo.isMacOS_10_14_Mojave_orLater )
+			c.putClientProperty( "jetbrains.awt.windowDarkAppearance", FlatLaf.isLafDark() );
 	}
 
 	protected void installClientDecorations() {
@@ -172,7 +184,7 @@ public class FlatRootPaneUI
 	}
 
 	protected FlatWindowResizer createWindowResizer() {
-		return new FlatWindowResizer( rootPane );
+		return new FlatWindowResizer.WindowResizer( rootPane );
 	}
 
 	protected FlatTitlePane createTitlePane() {
@@ -203,6 +215,8 @@ public class FlatRootPaneUI
 				uninstallClientDecorations();
 				if( rootPane.getWindowDecorationStyle() != JRootPane.NONE )
 					installClientDecorations();
+				else
+					installBorder();
 				break;
 
 			case FlatClientProperties.MENU_BAR_EMBEDDED:
@@ -252,8 +266,9 @@ public class FlatRootPaneUI
 			int width = Math.max( titlePaneSize.width, contentSize.width );
 			int height = titlePaneSize.height + contentSize.height;
 			if( titlePane == null || !titlePane.isMenuBarEmbedded() ) {
-				Dimension menuBarSize = (rootPane.getJMenuBar() != null)
-					? getSizeFunc.apply( rootPane.getJMenuBar() )
+				JMenuBar menuBar = rootPane.getJMenuBar();
+				Dimension menuBarSize = (menuBar != null && menuBar.isVisible())
+					? getSizeFunc.apply( menuBar )
 					: new Dimension();
 
 				width = Math.max( width, menuBarSize.width );
@@ -270,6 +285,7 @@ public class FlatRootPaneUI
 		@Override
 		public void layoutContainer( Container parent ) {
 			JRootPane rootPane = (JRootPane) parent;
+			boolean isFullScreen = FlatUIUtils.isFullScreen( rootPane );
 
 			Insets insets = rootPane.getInsets();
 			int x = insets.left;
@@ -283,15 +299,15 @@ public class FlatRootPaneUI
 				rootPane.getGlassPane().setBounds( x, y, width, height );
 
 			int nextY = 0;
-			if( titlePane != null ) {
+			if( !isFullScreen && titlePane != null ) {
 				Dimension prefSize = titlePane.getPreferredSize();
 				titlePane.setBounds( 0, 0, width, prefSize.height );
 				nextY += prefSize.height;
 			}
 
 			JMenuBar menuBar = rootPane.getJMenuBar();
-			if( menuBar != null ) {
-				if( titlePane != null && titlePane.isMenuBarEmbedded() ) {
+			if( menuBar != null && menuBar.isVisible() ) {
+				if( !isFullScreen && titlePane != null && titlePane.isMenuBarEmbedded() ) {
 					titlePane.validate();
 					menuBar.setBounds( titlePane.getMenuBarBounds() );
 				} else {
@@ -304,6 +320,9 @@ public class FlatRootPaneUI
 			Container contentPane = rootPane.getContentPane();
 			if( contentPane != null )
 				contentPane.setBounds( 0, nextY, width, Math.max( height - nextY, 0 ) );
+
+			if( titlePane != null )
+				titlePane.menuBarLayouted();
 		}
 
 		@Override
@@ -338,7 +357,7 @@ public class FlatRootPaneUI
 
 		@Override
 		public Insets getBorderInsets( Component c, Insets insets ) {
-			if( isWindowMaximized( c ) ) {
+			if( isWindowMaximized( c ) || FlatUIUtils.isFullScreen( c ) ) {
 				// hide border if window is maximized
 				insets.top = insets.left = insets.bottom = insets.right = 0;
 				return insets;
@@ -348,7 +367,7 @@ public class FlatRootPaneUI
 
 		@Override
 		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
-			if( isWindowMaximized( c ) )
+			if( isWindowMaximized( c ) || FlatUIUtils.isFullScreen( c ) )
 				return;
 
 			Container parent = c.getParent();
@@ -369,4 +388,40 @@ public class FlatRootPaneUI
 				: false;
 		}
 	}
+
+	//---- class FlatWindowTitleBorder ----------------------------------------
+
+	private static class FlatWindowTitleBorder
+		extends BorderUIResource.EmptyBorderUIResource
+	{
+		private final Color borderColor;
+
+		FlatWindowTitleBorder( Color borderColor ) {
+			super( 0, 0, 0, 0 );
+			this.borderColor = borderColor;
+		}
+
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			if( showBorder( c ) ) {
+				float lineHeight = UIScale.scale( (float) 1 );
+				FlatUIUtils.paintFilledRectangle( g, borderColor, x, y, width, lineHeight );
+			}
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c, Insets insets ) {
+			insets.set( showBorder( c ) ? 1 : 0, 0, 0, 0 );
+			return insets;
+		}
+
+		private boolean showBorder( Component c ) {
+			Container parent = c.getParent();
+			return
+				(parent instanceof JFrame &&
+				 (((JFrame)parent).getJMenuBar() == null ||
+				  !((JFrame)parent).getJMenuBar().isVisible())) ||
+				parent instanceof JDialog;
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRoundBorder.java

@@ -33,6 +33,10 @@ public class FlatRoundBorder
 
 	@Override
 	protected int getArc( Component c ) {
-		return FlatUIUtils.isRoundRect( c ) ? Short.MAX_VALUE : arc;
+		if( isCellEditor( c ) )
+			return 0;
+
+		Boolean roundRect = FlatUIUtils.isRoundRect( c );
+		return roundRect != null ? (roundRect ? Short.MAX_VALUE : 0) : arc;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatScrollBarUI.java

@@ -19,7 +19,6 @@ package com.formdev.flatlaf.ui;
 import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
-import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.event.MouseAdapter;
@@ -65,7 +64,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault ScrollBar.pressedTrackColor			Color	optional
  * @uiDefault ScrollBar.pressedThumbColor			Color	optional
  * @uiDefault ScrollBar.pressedThumbWithTrack		boolean
- * @uiDefault Component.arrowType					String	triangle (default) or chevron
+ * @uiDefault Component.arrowType					String	chevron (default) or triangle
  * @uiDefault ScrollBar.showButtons					boolean
  * @uiDefault ScrollBar.buttonArrowColor			Color
  * @uiDefault ScrollBar.buttonDisabledArrowColor	Color
@@ -142,6 +141,12 @@ public class FlatScrollBarUI
 		buttonDisabledArrowColor = UIManager.getColor( "ScrollBar.buttonDisabledArrowColor" );
 		hoverButtonBackground = UIManager.getColor( "ScrollBar.hoverButtonBackground" );
 		pressedButtonBackground = UIManager.getColor( "ScrollBar.pressedButtonBackground" );
+
+		// fallback (e.g. when used in NetBeans GUI builder)
+		if( trackInsets == null )
+			trackInsets = new Insets( 0, 0, 0, 0 );
+		if( thumbInsets == null )
+			thumbInsets = new Insets( 0, 0, 0, 0 );
 	}
 
 	@Override
@@ -215,8 +220,9 @@ public class FlatScrollBarUI
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
-		FlatUIUtils.setRenderingHints( (Graphics2D) g );
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g );
 		super.paint( g, c );
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
 	}
 
 	@Override
@@ -284,12 +290,12 @@ public class FlatScrollBarUI
 
 	@Override
 	protected Dimension getMinimumThumbSize() {
-		return UIScale.scale( super.getMinimumThumbSize() );
+		return UIScale.scale( FlatUIUtils.addInsets( super.getMinimumThumbSize(), thumbInsets ) );
 	}
 
 	@Override
 	protected Dimension getMaximumThumbSize() {
-		return UIScale.scale( super.getMaximumThumbSize() );
+		return UIScale.scale( FlatUIUtils.addInsets( super.getMaximumThumbSize(), thumbInsets ) );
 	}
 
 	//---- class ScrollBarHoverListener ---------------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatScrollPaneUI.java

@@ -114,10 +114,7 @@ public class FlatScrollPaneUI
 		return new BasicScrollPaneUI.MouseWheelHandler() {
 			@Override
 			public void mouseWheelMoved( MouseWheelEvent e ) {
-				// Note: Getting UI value "ScrollPane.smoothScrolling" here to allow
-				// applications to turn smooth scrolling on or off at any time
-				// (e.g. in application options dialog).
-				if( UIManager.getBoolean( "ScrollPane.smoothScrolling" ) &&
+				if( isSmoothScrollingEnabled() &&
 					scrollpane.isWheelScrollingEnabled() &&
 					e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL &&
 					e.getPreciseWheelRotation() != 0 &&
@@ -130,6 +127,17 @@ public class FlatScrollPaneUI
 		};
 	}
 
+	protected boolean isSmoothScrollingEnabled() {
+		Object smoothScrolling = scrollpane.getClientProperty( FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING );
+		if( smoothScrolling instanceof Boolean )
+			return (Boolean) smoothScrolling;
+
+		// Note: Getting UI value "ScrollPane.smoothScrolling" here to allow
+		// applications to turn smooth scrolling on or off at any time
+		// (e.g. in application options dialog).
+		return UIManager.getBoolean( "ScrollPane.smoothScrolling" );
+	}
+
 	private static final double EPSILON = 1e-5d;
 
 	private void mouseWheelMovedSmooth( MouseWheelEvent e ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSeparatorUI.java

@@ -52,12 +52,8 @@ public class FlatSeparatorUI
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatSeparatorUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatSeparatorUI.class, FlatSeparatorUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSliderUI.java

@@ -18,17 +18,23 @@ package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
 import java.awt.Dimension;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
-import java.awt.event.MouseListener;
+import java.awt.Rectangle;
+import java.awt.Shape;
+import java.awt.event.MouseEvent;
+import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
 import java.awt.geom.RoundRectangle2D;
 import javax.swing.JComponent;
 import javax.swing.JSlider;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicSliderUI;
+import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -49,29 +55,46 @@ import com.formdev.flatlaf.util.UIScale;
  * <!-- FlatSliderUI -->
  *
  * @uiDefault Slider.trackWidth				int
- * @uiDefault Slider.thumbWidth				int
+ * @uiDefault Slider.thumbSize				Dimension
+ * @uiDefault Slider.focusWidth				int
+ * @uiDefault Slider.trackValueColor		Color	optional; defaults to Slider.thumbColor
  * @uiDefault Slider.trackColor				Color
  * @uiDefault Slider.thumbColor				Color
+ * @uiDefault Slider.thumbBorderColor		Color	optional; if null, no border is painted
  * @uiDefault Slider.focusedColor			Color	optional; defaults to Component.focusColor
- * @uiDefault Slider.hoverColor				Color	optional; defaults to Slider.focusedColor
- * @uiDefault Slider.disabledForeground		Color	used for track and thumb is disabled
+ * @uiDefault Slider.focusedThumbBorderColor Color	optional; defaults to Component.focusedBorderColor
+ * @uiDefault Slider.hoverThumbColor		Color	optional
+ * @uiDefault Slider.pressedThumbColor		Color	optional
+ * @uiDefault Slider.disabledTrackColor		Color
+ * @uiDefault Slider.disabledThumbColor		Color
+ * @uiDefault Slider.disabledThumbBorderColor Color	optional; defaults to Component.disabledBorderColor
  *
  * @author Karl Tauber
  */
 public class FlatSliderUI
 	extends BasicSliderUI
 {
-	private int trackWidth;
-	private int thumbWidth;
+	protected int trackWidth;
+	protected Dimension thumbSize;
+	protected int focusWidth;
 
-	private Color trackColor;
-	private Color thumbColor;
-	private Color focusColor;
-	private Color hoverColor;
-	private Color disabledForeground;
+	protected Color trackValueColor;
+	protected Color trackColor;
+	protected Color thumbColor;
+	protected Color thumbBorderColor;
+	protected Color focusBaseColor;
+	protected Color focusedColor;
+	protected Color focusedThumbBorderColor;
+	protected Color hoverThumbColor;
+	protected Color pressedThumbColor;
+	protected Color disabledTrackColor;
+	protected Color disabledThumbColor;
+	protected Color disabledThumbBorderColor;
 
-	private MouseListener hoverListener;
-	private boolean hover;
+	protected boolean thumbHover;
+	protected boolean thumbPressed;
+
+	private Object[] oldRenderingHints;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatSliderUI();
@@ -81,24 +104,6 @@ public class FlatSliderUI
 		super( null );
 	}
 
-	@Override
-	protected void installListeners( JSlider slider ) {
-		super.installListeners( slider );
-
-		hoverListener = new FlatUIUtils.HoverListener( slider, h -> {
-			hover = h;
-		} );
-		slider.addMouseListener( hoverListener );
-	}
-
-	@Override
-	protected void uninstallListeners( JSlider slider ) {
-		super.uninstallListeners( slider );
-
-		slider.removeMouseListener( hoverListener );
-		hoverListener = null;
-	}
-
 	@Override
 	protected void installDefaults( JSlider slider ) {
 		super.installDefaults( slider );
@@ -106,24 +111,65 @@ public class FlatSliderUI
 		LookAndFeel.installProperty( slider, "opaque", false );
 
 		trackWidth = UIManager.getInt( "Slider.trackWidth" );
-		thumbWidth = UIManager.getInt( "Slider.thumbWidth" );
+		thumbSize = UIManager.getDimension( "Slider.thumbSize" );
+		if( thumbSize == null ) {
+			// fallback for compatibility with old versions
+			int thumbWidth = UIManager.getInt( "Slider.thumbWidth" );
+			thumbSize = new Dimension( thumbWidth, thumbWidth );
+		}
+		focusWidth = FlatUIUtils.getUIInt( "Slider.focusWidth", 4 );
 
+		trackValueColor = FlatUIUtils.getUIColor( "Slider.trackValueColor", "Slider.thumbColor" );
 		trackColor = UIManager.getColor( "Slider.trackColor" );
 		thumbColor = UIManager.getColor( "Slider.thumbColor" );
-		focusColor = FlatUIUtils.getUIColor( "Slider.focusedColor", "Component.focusColor" );
-		hoverColor = FlatUIUtils.getUIColor( "Slider.hoverColor", focusColor );
-		disabledForeground = UIManager.getColor( "Slider.disabledForeground" );
+		thumbBorderColor = UIManager.getColor( "Slider.thumbBorderColor" );
+		focusBaseColor = UIManager.getColor( "Component.focusColor" );
+		focusedColor = FlatUIUtils.getUIColor( "Slider.focusedColor", focusBaseColor );
+		focusedThumbBorderColor = FlatUIUtils.getUIColor( "Slider.focusedThumbBorderColor", "Component.focusedBorderColor" );
+		hoverThumbColor = UIManager.getColor( "Slider.hoverThumbColor" );
+		pressedThumbColor = UIManager.getColor( "Slider.pressedThumbColor" );
+		disabledTrackColor = UIManager.getColor( "Slider.disabledTrackColor" );
+		disabledThumbColor = UIManager.getColor( "Slider.disabledThumbColor" );
+		disabledThumbBorderColor = FlatUIUtils.getUIColor( "Slider.disabledThumbBorderColor", "Component.disabledBorderColor" );
 	}
 
 	@Override
 	protected void uninstallDefaults( JSlider slider ) {
 		super.uninstallDefaults( slider );
 
+		trackValueColor = null;
 		trackColor = null;
 		thumbColor = null;
-		focusColor = null;
-		hoverColor = null;
-		disabledForeground = null;
+		thumbBorderColor = null;
+		focusBaseColor = null;
+		focusedColor = null;
+		focusedThumbBorderColor = null;
+		hoverThumbColor = null;
+		pressedThumbColor = null;
+		disabledTrackColor = null;
+		disabledThumbColor = null;
+		disabledThumbBorderColor = null;
+	}
+
+	@Override
+	protected TrackListener createTrackListener( JSlider slider ) {
+		return new FlatTrackListener();
+	}
+
+	@Override
+	public int getBaseline( JComponent c, int width, int height ) {
+		if( c == null )
+			throw new NullPointerException();
+		if( width < 0 || height < 0 )
+			throw new IllegalArgumentException();
+
+		// no baseline for vertical orientation
+		if( slider.getOrientation() == JSlider.VERTICAL )
+			return -1;
+
+		// compute a baseline so that the track is vertically centered
+		FontMetrics fm = slider.getFontMetrics( slider.getFont() );
+		return trackRect.y + Math.round( (trackRect.height - fm.getHeight()) / 2f ) + fm.getAscent() - 1;
 	}
 
 	@Override
@@ -153,14 +199,50 @@ public class FlatSliderUI
 
 	@Override
 	protected Dimension getThumbSize() {
-		return new Dimension( UIScale.scale( thumbWidth ), UIScale.scale( thumbWidth ) );
+		return calcThumbSize( slider, thumbSize, focusWidth );
+	}
+
+	public static Dimension calcThumbSize( JSlider slider, Dimension thumbSize, int focusWidth ) {
+		int fw = UIScale.scale( focusWidth );
+		int w = UIScale.scale( thumbSize.width ) + fw + fw;
+		int h = UIScale.scale( thumbSize.height ) + fw + fw;
+		return (slider.getOrientation() == JSlider.HORIZONTAL)
+			? new Dimension( w, h )
+			: new Dimension( h, w );
 	}
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
-		FlatUIUtils.setRenderingHints( (Graphics2D) g );
+		oldRenderingHints = FlatUIUtils.setRenderingHints( g );
+
+/*debug
+		g.setColor( Color.gray );
+		g.drawRect( 0, 0, c.getWidth() - 1, c.getHeight() - 1 );
+		g.setColor( Color.orange );
+		g.drawRect( focusRect.x, focusRect.y, focusRect.width - 1, focusRect.height - 1 );
+		g.setColor( Color.magenta );
+		g.drawRect( contentRect.x, contentRect.y, contentRect.width - 1, contentRect.height - 1 );
+		g.setColor( Color.blue );
+		g.drawRect( trackRect.x, trackRect.y, trackRect.width - 1, trackRect.height - 1 );
+		g.setColor( Color.red );
+		g.drawRect( thumbRect.x, thumbRect.y, thumbRect.width - 1, thumbRect.height - 1 );
+		g.setColor( Color.green );
+		g.drawRect( tickRect.x, tickRect.y, tickRect.width - 1, tickRect.height - 1 );
+		g.setColor( Color.red );
+		g.drawRect( labelRect.x, labelRect.y, labelRect.width - 1, labelRect.height - 1 );
+debug*/
 
 		super.paint( g, c );
+
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
+		oldRenderingHints = null;
+	}
+
+	@Override
+	public void paintLabels( Graphics g ) {
+		FlatUIUtils.runWithoutRenderingHints( g, oldRenderingHints, () -> {
+			super.paintLabels( g );
+		} );
 	}
 
 	@Override
@@ -201,50 +283,308 @@ public class FlatSliderUI
 		}
 
 		if( coloredTrack != null ) {
-			g.setColor( FlatUIUtils.deriveColor( FlatUIUtils.isPermanentFocusOwner( slider ) ? focusColor : (hover ? hoverColor : thumbColor), thumbColor ) );
+			if( slider.getInverted() ) {
+				RoundRectangle2D temp = track;
+				track = coloredTrack;
+				coloredTrack = temp;
+			}
+
+			g.setColor( trackValueColor );
 			((Graphics2D)g).fill( coloredTrack );
 		}
 
-		g.setColor( enabled ? trackColor : disabledForeground );
+		g.setColor( enabled ? trackColor : disabledTrackColor );
 		((Graphics2D)g).fill( track );
 	}
 
 	@Override
 	public void paintThumb( Graphics g ) {
-		g.setColor( FlatUIUtils.deriveColor( slider.isEnabled()
-			? (FlatUIUtils.isPermanentFocusOwner( slider ) ? focusColor : (hover ? hoverColor : thumbColor))
-			: disabledForeground,
-			thumbColor ) );
+		Color color = stateColor( slider, thumbHover, thumbPressed,
+			thumbColor, disabledThumbColor, null, hoverThumbColor, pressedThumbColor );
+		color = FlatUIUtils.deriveColor( color, thumbColor );
 
-		if( isRoundThumb() )
-			g.fillOval( thumbRect.x, thumbRect.y, thumbRect.width, thumbRect.height );
-		else {
-			double w = thumbRect.width;
-			double h = thumbRect.height;
-			double wh = w / 2;
+		Color borderColor = (thumbBorderColor != null)
+			? stateColor( slider, false, false, thumbBorderColor, disabledThumbBorderColor, focusedThumbBorderColor, null, null )
+			: null;
 
-			Path2D thumb = FlatUIUtils.createPath( 0,0, w,0, w,(h - wh), wh,h,  0,(h - wh) );
+		Color focusedColor = FlatUIUtils.deriveColor( this.focusedColor, focusBaseColor );
 
+		paintThumb( g, slider, thumbRect, isRoundThumb(), color, borderColor, focusedColor, focusWidth );
+	}
+
+	public static void paintThumb( Graphics g, JSlider slider, Rectangle thumbRect, boolean roundThumb,
+		Color thumbColor, Color thumbBorderColor, Color focusedColor, int focusWidth )
+	{
+		double systemScaleFactor = UIScale.getSystemScaleFactor( (Graphics2D) g );
+		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
+			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
+			HiDPIUtils.paintAtScale1x( (Graphics2D) g, thumbRect.x, thumbRect.y, thumbRect.width, thumbRect.height,
+				(g2d, x2, y2, width2, height2, scaleFactor) -> {
+					paintThumbImpl( g, slider, x2, y2, width2, height2,
+						roundThumb, thumbColor, thumbBorderColor, focusedColor,
+						(float) (focusWidth * scaleFactor) );
+				} );
+			return;
+		}
+
+		paintThumbImpl( g, slider, thumbRect.x, thumbRect.y, thumbRect.width, thumbRect.height,
+			roundThumb, thumbColor, thumbBorderColor, focusedColor, focusWidth );
+
+	}
+
+	private static void paintThumbImpl( Graphics g, JSlider slider, int x, int y, int width, int height,
+		boolean roundThumb, Color thumbColor, Color thumbBorderColor, Color focusedColor, float focusWidth )
+	{
+		int fw = Math.round( UIScale.scale( focusWidth ) );
+		int tx = x + fw;
+		int ty = y + fw;
+		int tw = width - fw - fw;
+		int th = height - fw - fw;
+		boolean focused = FlatUIUtils.isPermanentFocusOwner( slider );
+
+		if( roundThumb ) {
+			// paint thumb focus border
+			if( focused ) {
+				g.setColor( focusedColor );
+				((Graphics2D)g).fill( createRoundThumbShape( x, y, width, height ) );
+			}
+
+			if( thumbBorderColor != null ) {
+				// paint thumb border
+				g.setColor( thumbBorderColor );
+				((Graphics2D)g).fill( createRoundThumbShape( tx, ty, tw, th ) );
+
+				// paint thumb background
+				float lw = UIScale.scale( 1f );
+				g.setColor( thumbColor );
+				((Graphics2D)g).fill( createRoundThumbShape( tx + lw, ty + lw,
+					tw - lw - lw, th - lw - lw ) );
+			} else {
+				// paint thumb background
+				g.setColor( thumbColor );
+				((Graphics2D)g).fill( createRoundThumbShape( tx, ty, tw, th ) );
+			}
+		} else {
 			Graphics2D g2 = (Graphics2D) g.create();
 			try {
-				g2.translate( thumbRect.x, thumbRect.y );
+				g2.translate( x, y );
 				if( slider.getOrientation() == JSlider.VERTICAL ) {
 					if( slider.getComponentOrientation().isLeftToRight() ) {
-						g2.translate( 0, thumbRect.height );
+						g2.translate( 0, height );
 						g2.rotate( Math.toRadians( 270 ) );
 					} else {
-						g2.translate( thumbRect.width, 0 );
+						g2.translate( width, 0 );
 						g2.rotate( Math.toRadians( 90 ) );
 					}
+
+					// rotate thumb width/height
+					int temp = tw;
+					tw = th;
+					th = temp;
+				}
+
+				// paint thumb focus border
+				if( focused ) {
+					g2.setColor( focusedColor );
+					g2.fill( createDirectionalThumbShape( 0, 0,
+						tw + fw + fw, th + fw + fw + (fw * 0.4142f), fw ) );
+				}
+
+				if( thumbBorderColor != null ) {
+					// paint thumb border
+					g2.setColor( thumbBorderColor );
+					g2.fill( createDirectionalThumbShape( fw, fw, tw, th, 0 ) );
+
+					// paint thumb background
+					float lw = UIScale.scale( 1f );
+					g2.setColor( thumbColor );
+					g2.fill( createDirectionalThumbShape( fw + lw, fw + lw,
+						tw - lw - lw, th - lw - lw - (lw * 0.4142f), 0 ) );
+				} else {
+					// paint thumb background
+					g2.setColor( thumbColor );
+					g2.fill( createDirectionalThumbShape( fw, fw, tw, th, 0 ) );
 				}
-				g2.fill( thumb );
 			} finally {
 				g2.dispose();
 			}
 		}
 	}
 
-	private boolean isRoundThumb() {
+	public static Shape createRoundThumbShape( float x, float y, float w, float h ) {
+		if( w == h )
+			return new Ellipse2D.Float( x, y, w, h );
+		else {
+			float arc = Math.min( w, h );
+			return new RoundRectangle2D.Float( x, y, w, h, arc, arc );
+		}
+	}
+
+	public static Shape createDirectionalThumbShape( float x, float y, float w, float h, float arc ) {
+		float wh = w / 2;
+
+		Path2D path = new Path2D.Float();
+		path.moveTo( x + wh, y + h );
+		path.lineTo( x, y + (h - wh) );
+		path.lineTo( x, y + arc );
+		path.quadTo( x, y, x + arc, y );
+		path.lineTo( x + (w - arc), y );
+		path.quadTo( x + w, y, x + w, y + arc );
+		path.lineTo( x + w, y + (h - wh) );
+		path.closePath();
+
+		return path;
+	}
+
+	public static Color stateColor( JSlider slider, boolean hover, boolean pressed,
+		Color enabledColor, Color disabledColor, Color focusedColor, Color hoverColor, Color pressedColor )
+	{
+		if( disabledColor != null && !slider.isEnabled() )
+			return disabledColor;
+		if( pressedColor != null && pressed )
+			return pressedColor;
+		if( hoverColor != null && hover )
+			return hoverColor;
+		if( focusedColor != null && FlatUIUtils.isPermanentFocusOwner( slider ) )
+			return focusedColor;
+		return enabledColor;
+	}
+
+	protected boolean isRoundThumb() {
 		return !slider.getPaintTicks() && !slider.getPaintLabels();
 	}
+
+	@Override
+	public void setThumbLocation( int x, int y ) {
+		if( !isRoundThumb() ) {
+			// the needle of the directional thumb is painted outside of thumbRect
+			// --> must increase repaint rectangle
+
+			// set new thumb location and compute union of old and new thumb bounds
+			Rectangle r = new Rectangle( thumbRect );
+			thumbRect.setLocation( x, y );
+			SwingUtilities.computeUnion( thumbRect.x, thumbRect.y, thumbRect.width, thumbRect.height, r );
+
+			// increase union rectangle for repaint
+			int extra = (int) Math.ceil( UIScale.scale( focusWidth ) * 0.4142f );
+			if( slider.getOrientation() == JSlider.HORIZONTAL )
+				r.height += extra;
+			else {
+				r.width += extra;
+				if( !slider.getComponentOrientation().isLeftToRight() )
+					r.x -= extra;
+			}
+
+			slider.repaint( r );
+		} else
+			super.setThumbLocation( x, y );
+	}
+
+	//---- class FlatTrackListener --------------------------------------------
+
+	protected class FlatTrackListener
+		extends TrackListener
+	{
+		@Override
+		public void mouseEntered( MouseEvent e ) {
+			setThumbHover( isOverThumb( e ) );
+			super.mouseEntered( e );
+		}
+
+		@Override
+		public void mouseExited( MouseEvent e ) {
+			setThumbHover( false );
+			super.mouseExited( e );
+		}
+
+		@Override
+		public void mouseMoved( MouseEvent e ) {
+			setThumbHover( isOverThumb( e ) );
+			super.mouseMoved( e );
+		}
+
+		@Override
+		public void mousePressed( MouseEvent e ) {
+			setThumbPressed( isOverThumb( e ) );
+
+			if( !slider.isEnabled() )
+				return;
+
+			// use "old" behavior when clicking on track
+			if( UIManager.getBoolean( "Slider.scrollOnTrackClick" ) ) {
+				super.mousePressed( e );
+				return;
+			}
+
+			// "new" behavior set thumb to mouse location when clicking on track
+
+			int x = e.getX();
+			int y = e.getY();
+
+			// clicked on thumb --> let super class do the work
+			calculateGeometry();
+			if( thumbRect.contains( x, y ) ) {
+				super.mousePressed( e );
+				return;
+			}
+
+			if( UIManager.getBoolean( "Slider.onlyLeftMouseButtonDrag" ) &&
+				!SwingUtilities.isLeftMouseButton( e ) )
+			  return;
+
+			// move the mouse event coordinates to the center of the thumb
+			int tx = thumbRect.x + (thumbRect.width / 2) - x;
+			int ty = thumbRect.y + (thumbRect.height / 2) - y;
+			e.translatePoint( tx, ty );
+
+			// invoke super mousePressed() to start dragging thumb
+			super.mousePressed( e );
+
+			// move the mouse event coordinates back to current mouse location
+			e.translatePoint( -tx, -ty );
+
+			// invoke mouseDragged() to update thumb location
+			mouseDragged( e );
+
+			setThumbPressed( true );
+		}
+
+		@Override
+		public void mouseReleased( MouseEvent e ) {
+			setThumbPressed( false );
+			super.mouseReleased( e );
+		}
+
+		@Override
+		public void mouseDragged( MouseEvent e ) {
+			super.mouseDragged( e );
+
+			if( isDragging() &&
+				slider.getSnapToTicks() &&
+				slider.isEnabled() &&
+				!UIManager.getBoolean( "Slider.snapToTicksOnReleased" ) )
+			{
+				calculateThumbLocation();
+				slider.repaint();
+			}
+		}
+
+		protected void setThumbHover( boolean hover ) {
+			if( hover != thumbHover ) {
+				thumbHover = hover;
+				slider.repaint( thumbRect );
+			}
+		}
+
+		protected void setThumbPressed( boolean pressed ) {
+			if( pressed != thumbPressed ) {
+				thumbPressed = pressed;
+				slider.repaint( thumbRect );
+			}
+		}
+
+		protected boolean isOverThumb( MouseEvent e ) {
+			return e != null && slider.isEnabled() && thumbRect.contains( e.getX(), e.getY() );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSpinnerUI.java

@@ -59,7 +59,7 @@ import com.formdev.flatlaf.FlatClientProperties;
  *
  * @uiDefault Component.minimumWidth			int
  * @uiDefault Spinner.buttonStyle				String	button (default) or none
- * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault Component.borderColor				Color
  * @uiDefault Component.disabledBorderColor		Color
@@ -264,35 +264,38 @@ public class FlatSpinnerUI
 			FlatUIUtils.paintParentBackground( g, c );
 
 		Graphics2D g2 = (Graphics2D) g;
-		FlatUIUtils.setRenderingHints( g2 );
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g2 );
 
 		int width = c.getWidth();
 		int height = c.getHeight();
-		Component nextButton = getHandler().nextButton;
-		int arrowX = nextButton.getX();
-		int arrowWidth = nextButton.getWidth();
-		boolean paintButton = !"none".equals( buttonStyle );
 		boolean enabled = spinner.isEnabled();
-		boolean isLeftToRight = spinner.getComponentOrientation().isLeftToRight();
 
 		// paint background
 		g2.setColor( getBackground( enabled ) );
 		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 
-		// paint arrow buttons background
-		if( paintButton && enabled ) {
-			g2.setColor( buttonBackground );
-			Shape oldClip = g2.getClip();
-			if( isLeftToRight )
-				g2.clipRect( arrowX, 0, width - arrowX, height );
-			else
-				g2.clipRect( 0, 0, arrowX + arrowWidth, height );
-			FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
-			g2.setClip( oldClip );
-		}
+		// paint button background and separator
+		boolean paintButton = !"none".equals( buttonStyle );
+		Handler handler = getHandler();
+		if( paintButton && (handler.nextButton != null || handler.previousButton != null) ) {
+			Component button = (handler.nextButton != null) ? handler.nextButton : handler.previousButton;
+			int arrowX = button.getX();
+			int arrowWidth = button.getWidth();
+			boolean isLeftToRight = spinner.getComponentOrientation().isLeftToRight();
 
-		// paint vertical line between value and arrow buttons
-		if( paintButton ) {
+			// paint arrow buttons background
+			if( enabled ) {
+				g2.setColor( buttonBackground );
+				Shape oldClip = g2.getClip();
+				if( isLeftToRight )
+					g2.clipRect( arrowX, 0, width - arrowX, height );
+				else
+					g2.clipRect( 0, 0, arrowX + arrowWidth, height );
+				FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
+				g2.setClip( oldClip );
+			}
+
+			// paint vertical line between value and arrow buttons
 			g2.setColor( enabled ? borderColor : disabledBorderColor );
 			float lw = scale( 1f );
 			float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
@@ -300,6 +303,8 @@ public class FlatSpinnerUI
 		}
 
 		paint( g, c );
+
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
 	}
 
 	//---- class Handler ------------------------------------------------------
@@ -359,7 +364,7 @@ public class FlatSpinnerUI
 
 			if( nextButton == null && previousButton == null ) {
 				if( editor != null )
-					editor.setBounds( r );
+					editor.setBounds( FlatUIUtils.subtractInsets( r, padding ) );
 				return;
 			}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSplitPaneUI.java

@@ -17,11 +17,17 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Container;
 import java.awt.Cursor;
+import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.event.MouseEvent;
+import java.beans.PropertyChangeEvent;
 import javax.swing.JButton;
 import javax.swing.JComponent;
 import javax.swing.JSplitPane;
 import javax.swing.SwingConstants;
+import javax.swing.ToolTipManager;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicSplitPaneDivider;
@@ -42,10 +48,15 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * <!-- FlatSplitPaneUI -->
  *
- * @uiDefault Component.arrowType						String	triangle (default) or chevron
+ * @uiDefault Component.arrowType						String	chevron (default) or triangle
  * @uiDefault SplitPane.continuousLayout				boolean
  * @uiDefault SplitPaneDivider.oneTouchArrowColor		Color
  * @uiDefault SplitPaneDivider.oneTouchHoverArrowColor	Color
+ * @uiDefault SplitPaneDivider.style					String	grip (default) or plain
+ * @uiDefault SplitPaneDivider.gripColor				Color
+ * @uiDefault SplitPaneDivider.gripDotCount				int
+ * @uiDefault SplitPaneDivider.gripDotSize				int
+ * @uiDefault SplitPaneDivider.gripGap					int
  *
  * @author Karl Tauber
  */
@@ -54,8 +65,8 @@ public class FlatSplitPaneUI
 {
 	protected String arrowType;
 	private Boolean continuousLayout;
-	private Color oneTouchArrowColor;
-	private Color oneTouchHoverArrowColor;
+	protected Color oneTouchArrowColor;
+	protected Color oneTouchHoverArrowColor;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatSplitPaneUI();
@@ -90,8 +101,16 @@ public class FlatSplitPaneUI
 	protected class FlatSplitPaneDivider
 		extends BasicSplitPaneDivider
 	{
+		protected final String style = UIManager.getString( "SplitPaneDivider.style" );
+		protected final Color gripColor = UIManager.getColor( "SplitPaneDivider.gripColor" );
+		protected final int gripDotCount = FlatUIUtils.getUIInt( "SplitPaneDivider.gripDotCount", 3 );
+		protected final int gripDotSize = FlatUIUtils.getUIInt( "SplitPaneDivider.gripDotSize", 3 );
+		protected final int gripGap = FlatUIUtils.getUIInt( "SplitPaneDivider.gripGap", 2 );
+
 		protected FlatSplitPaneDivider( BasicSplitPaneUI ui ) {
 			super( ui );
+
+			setLayout( new FlatDividerLayout() );
 		}
 
 		@Override
@@ -109,16 +128,66 @@ public class FlatSplitPaneUI
 			return new FlatOneTouchButton( false );
 		}
 
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			super.propertyChange( e );
+
+			switch( e.getPropertyName() ) {
+				case JSplitPane.DIVIDER_LOCATION_PROPERTY:
+					// necessary to show/hide one-touch buttons on expand/collapse
+					revalidate();
+					break;
+			}
+		}
+
+		@Override
+		public void paint( Graphics g ) {
+			super.paint( g );
+
+			if( "plain".equals( style ) )
+				return;
+
+			Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g );
+
+			g.setColor( gripColor );
+			paintGrip( g, 0, 0, getWidth(), getHeight() );
+
+			FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
+		}
+
+		protected void paintGrip( Graphics g, int x, int y, int width, int height ) {
+			FlatUIUtils.paintGrip( g, x, y, width, height,
+				splitPane.getOrientation() == JSplitPane.VERTICAL_SPLIT,
+				gripDotCount, gripDotSize, gripGap, true );
+		}
+
+		protected boolean isLeftCollapsed() {
+			int location = splitPane.getDividerLocation();
+			Insets insets = splitPane.getInsets();
+			return (orientation == JSplitPane.VERTICAL_SPLIT)
+				? location == insets.top
+				: location == insets.left;
+		}
+
+		protected boolean isRightCollapsed() {
+			int location = splitPane.getDividerLocation();
+			Insets insets = splitPane.getInsets();
+			return (orientation == JSplitPane.VERTICAL_SPLIT)
+				? location == (splitPane.getHeight() - getHeight() - insets.bottom)
+				: location == (splitPane.getWidth() - getWidth() - insets.right);
+		}
+
 		//---- class FlatOneTouchButton ---------------------------------------
 
-		private class FlatOneTouchButton
+		protected class FlatOneTouchButton
 			extends FlatArrowButton
 		{
-			private final boolean left;
+			protected final boolean left;
 
-			public FlatOneTouchButton( boolean left ) {
+			protected FlatOneTouchButton( boolean left ) {
 				super( SwingConstants.NORTH, arrowType, oneTouchArrowColor, null, oneTouchHoverArrowColor, null );
 				setCursor( Cursor.getPredefinedCursor( Cursor.DEFAULT_CURSOR ) );
+				ToolTipManager.sharedInstance().registerComponent( this );
 
 				this.left = left;
 			}
@@ -129,7 +198,67 @@ public class FlatSplitPaneUI
 					? (left ? SwingConstants.NORTH : SwingConstants.SOUTH)
 					: (left ? SwingConstants.WEST : SwingConstants.EAST);
 			}
+
+			@Override
+			public String getToolTipText( MouseEvent e ) {
+				String key = (orientation == JSplitPane.VERTICAL_SPLIT)
+					? (left
+						? (isRightCollapsed()
+							? "SplitPaneDivider.expandBottomToolTipText"
+							: "SplitPaneDivider.collapseTopToolTipText")
+						: (isLeftCollapsed()
+							? "SplitPaneDivider.expandTopToolTipText"
+							: "SplitPaneDivider.collapseBottomToolTipText"))
+					: (left
+						? (isRightCollapsed()
+							? "SplitPaneDivider.expandRightToolTipText"
+							: "SplitPaneDivider.collapseLeftToolTipText")
+						: (isLeftCollapsed()
+							? "SplitPaneDivider.expandLeftToolTipText"
+							: "SplitPaneDivider.collapseRightToolTipText"));
+
+				// get text from client property
+				Object value = splitPane.getClientProperty( key );
+				if( value instanceof String )
+					return (String) value;
+
+				// get text from bundle
+				return UIManager.getString( key, getLocale() );
+			}
+		}
+
+		//---- class FlatDividerLayout ----------------------------------------
+
+		protected class FlatDividerLayout
+			extends DividerLayout
+		{
+			@Override
+			public void layoutContainer( Container c ) {
+				super.layoutContainer( c );
+
+				if( leftButton == null || rightButton == null || !splitPane.isOneTouchExpandable() )
+					return;
+
+				// increase side of buttons, which makes them easier to hit by the user
+				// and avoids cut arrows at small divider sizes
+				int extraSize = UIScale.scale( 4 );
+				if( orientation == JSplitPane.VERTICAL_SPLIT ) {
+					leftButton.setSize( leftButton.getWidth() + extraSize, leftButton.getHeight() );
+					rightButton.setBounds( leftButton.getX() + leftButton.getWidth(), rightButton.getY(),
+						rightButton.getWidth() + extraSize, rightButton.getHeight() );
+				} else {
+					leftButton.setSize( leftButton.getWidth(), leftButton.getHeight() + extraSize );
+					rightButton.setBounds( rightButton.getX(), leftButton.getY() + leftButton.getHeight(),
+						rightButton.getWidth(), rightButton.getHeight() + extraSize );
+				}
+
+				// hide buttons if not applicable
+				boolean leftCollapsed = isLeftCollapsed();
+				if( leftCollapsed )
+					rightButton.setLocation( leftButton.getLocation() );
+				leftButton.setVisible( !leftCollapsed );
+				rightButton.setVisible( !isRightCollapsed() );
+			}
 		}
 	}
-
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java

@@ -31,6 +31,7 @@ import javax.swing.JComponent;
 import javax.swing.JLabel;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
+import javax.swing.ScrollPaneConstants;
 import javax.swing.SwingConstants;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
@@ -98,10 +99,13 @@ public class FlatTableHeaderUI
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
+		if( header.getColumnModel().getColumnCount() <= 0 )
+			return;
+
 		// do not paint borders if JTableHeader.setDefaultRenderer() was used
 		TableCellRenderer defaultRenderer = header.getDefaultRenderer();
 		boolean paintBorders = isSystemDefaultRenderer( defaultRenderer );
-		if( !paintBorders && header.getColumnModel().getColumnCount() > 0 ) {
+		if( !paintBorders ) {
 			// check whether the renderer delegates to the system default renderer
 			Component rendererComponent = defaultRenderer.getTableCellRendererComponent(
 				header.getTable(), "", false, false, -1, 0 );
@@ -145,6 +149,9 @@ public class FlatTableHeaderUI
 		float bottomLineIndent = lineWidth * 3;
 		TableColumnModel columnModel = header.getColumnModel();
 		int columnCount = columnModel.getColumnCount();
+		int sepCount = columnCount;
+		if( hideLastVerticalLine() )
+			sepCount--;
 
 		Graphics2D g2 = (Graphics2D) g.create();
 		try {
@@ -157,23 +164,30 @@ public class FlatTableHeaderUI
 			// paint column separator lines
 			g2.setColor( separatorColor );
 
-			int sepCount = columnCount;
-			if( header.getTable().getAutoResizeMode() != JTable.AUTO_RESIZE_OFF && !isVerticalScrollBarVisible() )
-				sepCount--;
+			float y = topLineIndent;
+			float h = height - bottomLineIndent;
 
 			if( header.getComponentOrientation().isLeftToRight() ) {
 				int x = 0;
 				for( int i = 0; i < sepCount; i++ ) {
 					x += columnModel.getColumn( i ).getWidth();
-					g2.fill( new Rectangle2D.Float( x - lineWidth, topLineIndent, lineWidth, height - bottomLineIndent ) );
+					g2.fill( new Rectangle2D.Float( x - lineWidth, y, lineWidth, h ) );
 				}
+
+				// paint trailing separator (on right side)
+				if( !hideTrailingVerticalLine() )
+					g2.fill( new Rectangle2D.Float( header.getWidth() - lineWidth, y, lineWidth, h ) );
 			} else {
-				int x = width;
+				Rectangle cellRect = header.getHeaderRect( 0 );
+				int x = cellRect.x + cellRect.width;
 				for( int i = 0; i < sepCount; i++ ) {
 					x -= columnModel.getColumn( i ).getWidth();
-					g2.fill( new Rectangle2D.Float( x - (i < sepCount - 1 ? lineWidth : 0),
-						topLineIndent, lineWidth, height - bottomLineIndent ) );
+					g2.fill( new Rectangle2D.Float( x - (i < sepCount - 1 ? lineWidth : 0), y, lineWidth, h ) );
 				}
+
+				// paint trailing separator (on left side)
+				if( !hideTrailingVerticalLine() )
+					g2.fill( new Rectangle2D.Float( 0, y, lineWidth, h ) );
 			}
 		} finally {
 			g2.dispose();
@@ -230,20 +244,30 @@ public class FlatTableHeaderUI
 		return size;
 	}
 
-	private boolean isVerticalScrollBarVisible() {
-		JScrollPane scrollPane = getScrollPane();
-		return (scrollPane != null && scrollPane.getVerticalScrollBar() != null)
-			? scrollPane.getVerticalScrollBar().isVisible()
-			: false;
+	protected boolean hideLastVerticalLine() {
+		Container viewport = header.getParent();
+		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
+		if( !(viewportParent instanceof JScrollPane) )
+			return false;
+
+		Rectangle cellRect = header.getHeaderRect( header.getColumnModel().getColumnCount() - 1 );
+
+		// using component orientation of scroll pane here because it is also used in FlatTableUI
+		JScrollPane scrollPane = (JScrollPane) viewportParent;
+		return scrollPane.getComponentOrientation().isLeftToRight()
+			? cellRect.x + cellRect.width >= viewport.getWidth()
+			: cellRect.x <= 0;
 	}
 
-	private JScrollPane getScrollPane() {
-		Container parent = header.getParent();
-		if( parent == null )
-			return null;
+	protected boolean hideTrailingVerticalLine() {
+		Container viewport = header.getParent();
+		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
+		if( !(viewportParent instanceof JScrollPane) )
+			return false;
 
-		parent = parent.getParent();
-		return (parent instanceof JScrollPane) ? (JScrollPane) parent : null;
+		JScrollPane scrollPane = (JScrollPane) viewportParent;
+		return viewport == scrollPane.getColumnHeader() &&
+			scrollPane.getCorner( ScrollPaneConstants.UPPER_TRAILING_CORNER ) == null;
 	}
 
 	//---- class FlatTableCellHeaderRenderer ----------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableUI.java

@@ -17,17 +17,25 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.EventQueue;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
+import java.awt.geom.Rectangle2D;
 import javax.swing.JCheckBox;
 import javax.swing.JComponent;
+import javax.swing.JScrollPane;
+import javax.swing.JViewport;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicTableUI;
 import javax.swing.table.TableCellRenderer;
+import com.formdev.flatlaf.util.Graphics2DProxy;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -71,6 +79,10 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Table.cellFocusColor						Color
  * @uiDefault Table.showCellFocusIndicator				boolean
  *
+ * <!-- FlatInputMaps -->
+ *
+ * @uiDefault Table.consistentHomeEndKeyBehavior		boolean
+ *
  * @author Karl Tauber
  */
 public class FlatTableUI
@@ -93,16 +105,6 @@ public class FlatTableUI
 		return new FlatTableUI();
 	}
 
-	@Override
-	public void installUI( JComponent c ) {
-		super.installUI( c );
-	}
-
-	@Override
-	public void uninstallUI( JComponent c ) {
-		super.uninstallUI( c );
-	}
-
 	@Override
 	protected void installDefaults() {
 		super.installDefaults();
@@ -194,6 +196,9 @@ public class FlatTableUI
 	 * or the application has to be changed to extend a FlatLaf renderer.
 	 */
 	private void toggleSelectionColors() {
+		if( table == null )
+			return;
+
 		if( FlatUIUtils.isPermanentFocusOwner( table ) ) {
 			if( table.getSelectionBackground() == selectionInactiveBackground )
 				table.setSelectionBackground( selectionBackground );
@@ -206,4 +211,94 @@ public class FlatTableUI
 				table.setSelectionForeground( selectionInactiveForeground );
 		}
 	}
+
+	@Override
+	public void paint( Graphics g, JComponent c ) {
+		boolean horizontalLines = table.getShowHorizontalLines();
+		boolean verticalLines = table.getShowVerticalLines();
+		if( horizontalLines || verticalLines ) {
+			// fix grid painting issues in BasicTableUI
+			//   - do not paint last vertical grid line if line is on right edge of scroll pane
+			//   - fix unstable grid line thickness when scaled at 125%, 150%, 175%, 225%, ...
+			//     which paints either 1px or 2px lines depending on location
+
+			boolean hideLastVerticalLine = hideLastVerticalLine();
+			int tableWidth = table.getWidth();
+
+			double systemScaleFactor = UIScale.getSystemScaleFactor( (Graphics2D) g );
+			double lineThickness = (1. / systemScaleFactor) * (int) systemScaleFactor;
+
+			// Java 8 uses drawLine() to paint grid lines
+			// Java 9+ uses fillRect() to paint grid lines
+			g = new Graphics2DProxy( (Graphics2D) g ) {
+				@Override
+				public void drawLine( int x1, int y1, int x2, int y2 ) {
+					// do not paint last vertical line
+					if( hideLastVerticalLine && verticalLines &&
+						x1 == x2 && y1 == 0 && x1 == tableWidth - 1 &&
+						wasInvokedFromPaintGrid() )
+					  return;
+
+					super.drawLine( x1, y1, x2, y2 );
+				}
+
+				@Override
+				public void fillRect( int x, int y, int width, int height ) {
+					// do not paint last vertical line
+					if( hideLastVerticalLine && verticalLines &&
+						width == 1 && y == 0 && x == tableWidth - 1 &&
+						wasInvokedFromPaintGrid() )
+					  return;
+
+					// reduce line thickness to avoid unstable painted line thickness
+					if( lineThickness != 1 ) {
+						if( horizontalLines && height == 1 && wasInvokedFromPaintGrid() ) {
+							super.fill( new Rectangle2D.Double( x, y, width, lineThickness ) );
+							return;
+						}
+						if( verticalLines && width == 1 && y == 0 && wasInvokedFromPaintGrid() ) {
+							super.fill( new Rectangle2D.Double( x, y, lineThickness, height ) );
+							return;
+						}
+					}
+
+					super.fillRect( x, y, width, height );
+				}
+
+				private boolean wasInvokedFromPaintGrid() {
+					StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+					for( int i = 0; i < 10 || i < stackTrace.length; i++ ) {
+						if( "javax.swing.plaf.basic.BasicTableUI".equals( stackTrace[i].getClassName() ) &&
+							"paintGrid".equals( stackTrace[i].getMethodName() ) )
+						  return true;
+					}
+					return false;
+				}
+			};
+		}
+
+		super.paint( g, c );
+	}
+
+	protected boolean hideLastVerticalLine() {
+		Container viewport = SwingUtilities.getUnwrappedParent( table );
+		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
+		if( !(viewportParent instanceof JScrollPane) )
+			return false;
+
+		// do not hide last vertical line if table is smaller than viewport
+		if( table.getX() + table.getWidth() < viewport.getWidth() )
+			return false;
+
+		// in left-to-right:
+		//   - do not hide last vertical line if table used as row header in scroll pane
+		// in right-to-left:
+		//   - hide last vertical line if table used as row header in scroll pane
+		//   - do not hide last vertical line if table is in center and scroll pane has row header
+		JScrollPane scrollPane = (JScrollPane) viewportParent;
+		JViewport rowHeader = scrollPane.getRowHeader();
+		return scrollPane.getComponentOrientation().isLeftToRight()
+			? (viewport != rowHeader)
+			: (viewport == rowHeader || rowHeader == null);
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextAreaUI.java

@@ -60,6 +60,7 @@ public class FlatTextAreaUI
 {
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
+	protected Color background;
 	protected Color disabledBackground;
 	protected Color inactiveBackground;
 
@@ -67,12 +68,20 @@ public class FlatTextAreaUI
 		return new FlatTextAreaUI();
 	}
 
+	@Override
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		updateBackground();
+	}
+
 	@Override
 	protected void installDefaults() {
 		super.installDefaults();
 
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
+		background = UIManager.getColor( "TextArea.background" );
 		disabledBackground = UIManager.getColor( "TextArea.disabledBackground" );
 		inactiveBackground = UIManager.getColor( "TextArea.inactiveBackground" );
 	}
@@ -81,6 +90,7 @@ public class FlatTextAreaUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		background = null;
 		disabledBackground = null;
 		inactiveBackground = null;
 	}
@@ -89,26 +99,36 @@ public class FlatTextAreaUI
 	protected void propertyChange( PropertyChangeEvent e ) {
 		super.propertyChange( e );
 		FlatEditorPaneUI.propertyChange( getComponent(), e );
+
+		switch( e.getPropertyName() ) {
+			case "editable":
+			case "enabled":
+				updateBackground();
+				break;
+		}
 	}
 
-	@Override
-	protected void paintSafely( Graphics g ) {
-		super.paintSafely( HiDPIUtils.createGraphicsTextYCorrection( (Graphics2D) g ) );
-	}
-
-	@Override
-	protected void paintBackground( Graphics g ) {
+	private void updateBackground() {
 		JTextComponent c = getComponent();
 
 		Color background = c.getBackground();
-		g.setColor( !(background instanceof UIResource)
-			? background
-			: (isIntelliJTheme && (!c.isEnabled() || !c.isEditable())
-				? FlatUIUtils.getParentBackground( c )
-				: (!c.isEnabled()
-					? disabledBackground
-					: (!c.isEditable() ? inactiveBackground : background))) );
-		g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
+		if( !(background instanceof UIResource) )
+			return;
+
+		// do not update background if it currently has a unknown color (assigned from outside)
+		if( background != this.background &&
+			background != disabledBackground &&
+			background != inactiveBackground )
+		  return;
+
+		Color newBackground = !c.isEnabled()
+			? disabledBackground
+			: (!c.isEditable()
+				? inactiveBackground
+				: this.background);
+
+		if( newBackground != background )
+			c.setBackground( newBackground );
 	}
 
 	@Override
@@ -128,4 +148,22 @@ public class FlatTextAreaUI
 
 		return FlatEditorPaneUI.applyMinimumWidth( c, size, minimumWidth );
 	}
+
+	@Override
+	protected void paintSafely( Graphics g ) {
+		super.paintSafely( HiDPIUtils.createGraphicsTextYCorrection( (Graphics2D) g ) );
+	}
+
+	@Override
+	protected void paintBackground( Graphics g ) {
+		JTextComponent c = getComponent();
+
+		// for compatibility with IntelliJ themes
+		if( isIntelliJTheme && (!c.isEnabled() || !c.isEditable()) && (c.getBackground() instanceof UIResource) ) {
+			FlatUIUtils.paintParentBackground( g, c );
+			return;
+		}
+
+		super.paintBackground( g );
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextBorder.java

@@ -33,6 +33,10 @@ public class FlatTextBorder
 
 	@Override
 	protected int getArc( Component c ) {
-		return FlatUIUtils.isRoundRect( c ) ? Short.MAX_VALUE : arc;
+		if( isCellEditor( c ) )
+			return 0;
+
+		Boolean roundRect = FlatUIUtils.isRoundRect( c );
+		return roundRect != null ? (roundRect ? Short.MAX_VALUE : 0) : arc;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextFieldUI.java

@@ -64,6 +64,7 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault TextField.placeholderForeground	Color
  * @uiDefault TextComponent.selectAllOnFocusPolicy	String	never, once (default) or always
+ * @uiDefault TextComponent.selectAllOnMouseClick	boolean
  *
  * @author Karl Tauber
  */
@@ -121,7 +122,8 @@ public class FlatTextFieldUI
 
 	@Override
 	protected Caret createCaret() {
-		return new FlatCaret( UIManager.getString( "TextComponent.selectAllOnFocusPolicy" ) );
+		return new FlatCaret( UIManager.getString( "TextComponent.selectAllOnFocusPolicy"),
+			UIManager.getBoolean( "TextComponent.selectAllOnMouseClick" ) );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java

@@ -19,6 +19,7 @@ package com.formdev.flatlaf.ui;
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Component;
+import java.awt.Container;
 import java.awt.Dialog;
 import java.awt.Dimension;
 import java.awt.EventQueue;
@@ -75,6 +76,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TitlePane.foreground							Color
  * @uiDefault TitlePane.inactiveForeground					Color
  * @uiDefault TitlePane.embeddedForeground					Color
+ * @uiDefault TitlePane.borderColor							Color	optional
  * @uiDefault TitlePane.iconSize							Dimension
  * @uiDefault TitlePane.iconMargins							Insets
  * @uiDefault TitlePane.titleMargins						Insets
@@ -96,6 +98,7 @@ public class FlatTitlePane
 	protected final Color activeForeground = UIManager.getColor( "TitlePane.foreground" );
 	protected final Color inactiveForeground = UIManager.getColor( "TitlePane.inactiveForeground" );
 	protected final Color embeddedForeground = UIManager.getColor( "TitlePane.embeddedForeground" );
+	protected final Color borderColor = UIManager.getColor( "TitlePane.borderColor" );
 
 	protected final Insets menuBarMargins = UIManager.getInsets( "TitlePane.menuBarMargins" );
 	protected final Dimension iconSize = UIManager.getDimension( "TitlePane.iconSize" );
@@ -148,10 +151,6 @@ public class FlatTitlePane
 		iconLabel.setBorder( new FlatEmptyBorder( UIManager.getInsets( "TitlePane.iconMargins" ) ) );
 		titleLabel.setBorder( new FlatEmptyBorder( UIManager.getInsets( "TitlePane.titleMargins" ) ) );
 
-		//TODO
-//		titleLabel.setHorizontalAlignment( JLabel.CENTER );
-//		titleLabel.setHorizontalAlignment( JLabel.RIGHT );
-
 		leftPanel.setLayout( new BoxLayout( leftPanel, BoxLayout.LINE_AXIS ) );
 		leftPanel.setOpaque( false );
 		leftPanel.add( iconLabel );
@@ -160,7 +159,7 @@ public class FlatTitlePane
 			@Override
 			public Dimension getPreferredSize() {
 				JMenuBar menuBar = rootPane.getJMenuBar();
-				return (menuBar != null && isMenuBarEmbedded())
+				return (menuBar != null && menuBar.isVisible() && isMenuBarEmbedded())
 					? FlatUIUtils.addInsets( menuBar.getPreferredSize(), UIScale.scale( menuBarMargins ) )
 					: new Dimension();
 			}
@@ -169,7 +168,25 @@ public class FlatTitlePane
 
 		createButtons();
 
-		setLayout( new BorderLayout() );
+		setLayout( new BorderLayout() {
+			@Override
+			public void layoutContainer( Container target ) {
+				super.layoutContainer( target );
+
+				// make left panel (with embedded menu bar) smaller if horizontal space is rare
+				// to avoid that embedded menu bar overlaps button bar
+				Insets insets = target.getInsets();
+				int width = target.getWidth() - insets.left - insets.right;
+				if( leftPanel.getWidth() + buttonPanel.getWidth() > width ) {
+					int oldWidth = leftPanel.getWidth();
+					int newWidth = Math.max( width - buttonPanel.getWidth(), 0 );
+					leftPanel.setSize( newWidth, leftPanel.getHeight() );
+					if( !getComponentOrientation().isLeftToRight() )
+						leftPanel.setLocation( leftPanel.getX() + (oldWidth - newWidth), leftPanel.getY() );
+				}
+			}
+		} );
+
 		add( leftPanel, BorderLayout.LINE_START );
 		add( titleLabel, BorderLayout.CENTER );
 		add( buttonPanel, BorderLayout.LINE_END );
@@ -223,14 +240,17 @@ public class FlatTitlePane
 	}
 
 	protected void activeChanged( boolean active ) {
-		boolean hasEmbeddedMenuBar = rootPane.getJMenuBar() != null && isMenuBarEmbedded();
+		boolean hasEmbeddedMenuBar = rootPane.getJMenuBar() != null && rootPane.getJMenuBar().isVisible() && isMenuBarEmbedded();
 		Color background = FlatUIUtils.nonUIResource( active ? activeBackground : inactiveBackground );
-		Color foreground = FlatUIUtils.nonUIResource( active
-			? (hasEmbeddedMenuBar ? embeddedForeground : activeForeground)
-			: inactiveForeground );
+		Color foreground = FlatUIUtils.nonUIResource( active ? activeForeground : inactiveForeground );
+		Color titleForeground = (hasEmbeddedMenuBar && active) ? FlatUIUtils.nonUIResource( embeddedForeground ) : foreground;
 
 		setBackground( background );
-		titleLabel.setForeground( foreground );
+		titleLabel.setForeground( titleForeground );
+		iconifyButton.setForeground( foreground );
+		maximizeButton.setForeground( foreground );
+		restoreButton.setForeground( foreground );
+		closeButton.setForeground( foreground );
 
 		titleLabel.setHorizontalAlignment( hasEmbeddedMenuBar ? SwingConstants.CENTER : SwingConstants.LEADING );
 
@@ -253,6 +273,26 @@ public class FlatTitlePane
 			iconifyButton.setVisible( true );
 			maximizeButton.setVisible( resizable && !maximized );
 			restoreButton.setVisible( resizable && maximized );
+
+			if( maximized &&
+				rootPane.getClientProperty( "_flatlaf.maximizedBoundsUpToDate" ) == null )
+			{
+				rootPane.putClientProperty( "_flatlaf.maximizedBoundsUpToDate", null );
+
+				// In case that frame was maximized from custom code (e.g. when restoring
+				// window state on application startup), then maximized bounds is not set
+				// and the window would overlap Windows task bar.
+				// To avoid this, update maximized bounds here and if it has changed
+				// re-maximize windows so that maximized bounds are used.
+				Rectangle oldMaximizedBounds = frame.getMaximizedBounds();
+				updateMaximizedBounds();
+				Rectangle newMaximizedBounds = frame.getMaximizedBounds();
+				if( newMaximizedBounds != null && !newMaximizedBounds.equals( oldMaximizedBounds ) ) {
+					int oldExtendedState = frame.getExtendedState();
+					frame.setExtendedState( oldExtendedState & ~Frame.MAXIMIZED_BOTH );
+					frame.setExtendedState( oldExtendedState );
+				}
+			}
 		} else {
 			// hide buttons because they are only supported in frames
 			iconifyButton.setVisible( false );
@@ -375,21 +415,46 @@ public class FlatTitlePane
 		return FlatUIUtils.subtractInsets( bounds, UIScale.scale( getMenuBarMargins() ) );
 	}
 
+	protected Insets getMenuBarMargins() {
+		return getComponentOrientation().isLeftToRight()
+			? menuBarMargins
+			: new Insets( menuBarMargins.top, menuBarMargins.right, menuBarMargins.bottom, menuBarMargins.left );
+	}
+
 	protected void menuBarChanged() {
 		menuBarPlaceholder.invalidate();
 
+		// necessary for the case that an embedded menu bar is made invisible
+		// and a border color is specified
+		repaint();
+
 		// update title foreground color
 		EventQueue.invokeLater( () -> {
 			activeChanged( window == null || window.isActive() );
 		} );
 	}
 
-	protected Insets getMenuBarMargins() {
-		return getComponentOrientation().isLeftToRight()
-			? menuBarMargins
-			: new Insets( menuBarMargins.top, menuBarMargins.right, menuBarMargins.bottom, menuBarMargins.left );
+	protected void menuBarLayouted() {
+		updateJBRHitTestSpotsAndTitleBarHeightLater();
 	}
 
+/*debug
+	@Override
+	public void paint( Graphics g ) {
+		super.paint( g );
+
+		if( debugTitleBarHeight > 0 ) {
+			g.setColor( Color.green );
+			g.drawLine( 0, debugTitleBarHeight, getWidth(), debugTitleBarHeight );
+		}
+		if( debugHitTestSpots != null ) {
+			g.setColor( Color.blue );
+			for( Rectangle r : debugHitTestSpots )
+				g.drawRect( r.x, r.y, r.width, r.height );
+		}
+	}
+debug*/
+
 	@Override
 	protected void paintComponent( Graphics g ) {
 		g.setColor( getBackground() );
@@ -425,11 +490,24 @@ public class FlatTitlePane
 
 		Frame frame = (Frame) window;
 
+		updateMaximizedBounds();
+
+		// let our WindowStateListener know that the maximized bounds are up-to-date
+		rootPane.putClientProperty( "_flatlaf.maximizedBoundsUpToDate", true );
+
+		// maximize window
+		frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
+	}
+
+	protected void updateMaximizedBounds() {
+		Frame frame = (Frame) window;
+
 		// set maximized bounds to avoid that maximized window overlaps Windows task bar
 		// (if not running in JBR and if not modified from the application)
+		Rectangle oldMaximizedBounds = frame.getMaximizedBounds();
 		if( !hasJBRCustomDecoration() &&
-			(frame.getMaximizedBounds() == null ||
-			 Objects.equals( frame.getMaximizedBounds(), rootPane.getClientProperty( "_flatlaf.maximizedBounds" ) )) )
+			(oldMaximizedBounds == null ||
+			 Objects.equals( oldMaximizedBounds, rootPane.getClientProperty( "_flatlaf.maximizedBounds" ) )) )
 		{
 			GraphicsConfiguration gc = window.getGraphicsConfiguration();
 
@@ -450,7 +528,7 @@ public class FlatTitlePane
 			int maximizedWidth = screenBounds.width;
 			int maximizedHeight = screenBounds.height;
 
-			if( !SystemInfo.IS_JAVA_15_OR_LATER ) {
+			if( !isMaximizedBoundsFixed() ) {
 				// on Java 8 to 14, maximized x,y are 0,0 based on all screens in a multi-screen environment
 				maximizedX = 0;
 				maximizedY = 0;
@@ -470,22 +548,36 @@ public class FlatTitlePane
 			// (see https://bugs.openjdk.java.net/browse/JDK-8231564 and
 			//      https://bugs.openjdk.java.net/browse/JDK-8176359)
 			// and except for Java 8 on secondary screens where primary screen is scaled
-			Rectangle maximizedBounds = new Rectangle(
+			Rectangle newMaximizedBounds = new Rectangle(
 				maximizedX + screenInsets.left,
 				maximizedY + screenInsets.top,
 				maximizedWidth - screenInsets.left - screenInsets.right,
 				maximizedHeight - screenInsets.top - screenInsets.bottom );
 
-			// change maximized bounds
-			frame.setMaximizedBounds( maximizedBounds );
+			if( !Objects.equals( oldMaximizedBounds, newMaximizedBounds ) ) {
+				// change maximized bounds
+				frame.setMaximizedBounds( newMaximizedBounds );
 
-			// remember maximized bounds in client property to be able to detect
-			// whether maximized bounds are modified from the application
-			rootPane.putClientProperty( "_flatlaf.maximizedBounds", maximizedBounds );
+				// remember maximized bounds in client property to be able to detect
+				// whether maximized bounds are modified from the application
+				rootPane.putClientProperty( "_flatlaf.maximizedBounds", newMaximizedBounds );
+			}
 		}
+	}
 
-		// maximize window
-		frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
+	/**
+	 * Frame.setMaximizedBounds() behaves different on some Java versions after issues
+	 *   https://bugs.openjdk.java.net/browse/JDK-8231564 and
+	 *   https://bugs.openjdk.java.net/browse/JDK-8176359
+	 *   (see also https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8176359)
+	 * were fixed in Java 15 and backported to 11.0.8 and 13.0.4.
+	 */
+	private boolean isMaximizedBoundsFixed() {
+		return SystemInfo.isJava_15_orLater ||
+			(SystemInfo.javaVersion >= SystemInfo.toVersion( 11, 0, 8, 0 ) &&
+			 SystemInfo.javaVersion <  SystemInfo.toVersion( 12, 0, 0, 0 )) ||
+			(SystemInfo.javaVersion >= SystemInfo.toVersion( 13, 0, 4, 0 ) &&
+			 SystemInfo.javaVersion <  SystemInfo.toVersion( 14, 0, 0, 0 ));
 	}
 
 	/**
@@ -540,6 +632,12 @@ public class FlatTitlePane
 			titleBarHeight--;
 
 		JBRCustomDecorations.setHitTestSpotsAndTitleBarHeight( window, hitTestSpots, titleBarHeight );
+
+/*debug
+		debugHitTestSpots = hitTestSpots;
+		debugTitleBarHeight = titleBarHeight;
+		repaint();
+debug*/
 	}
 
 	protected void addJBRHitTestSpot( JComponent c, boolean subtractMenuBarMargins, List<Rectangle> hitTestSpots ) {
@@ -556,6 +654,11 @@ public class FlatTitlePane
 		hitTestSpots.add( r );
 	}
 
+/*debug
+	private List<Rectangle> debugHitTestSpots;
+	private int debugTitleBarHeight;
+debug*/
+
 	//---- class TitlePaneBorder ----------------------------------------------
 
 	protected class FlatTitlePaneBorder
@@ -565,12 +668,13 @@ public class FlatTitlePane
 		public Insets getBorderInsets( Component c, Insets insets ) {
 			super.getBorderInsets( c, insets );
 
-			// if menu bar is embedded, add bottom insets of menu bar border
 			Border menuBarBorder = getMenuBarBorder();
 			if( menuBarBorder != null ) {
+				// if menu bar is embedded, add bottom insets of menu bar border
 				Insets menuBarInsets = menuBarBorder.getBorderInsets( c );
 				insets.bottom += menuBarInsets.bottom;
-			}
+			} else if( borderColor != null && (rootPane.getJMenuBar() == null || !rootPane.getJMenuBar().isVisible()) )
+				insets.bottom += UIScale.scale( 1 );
 
 			if( hasJBRCustomDecoration() )
 				insets = FlatUIUtils.addInsets( insets, JBRWindowTopBorder.getInstance().getBorderInsets() );
@@ -580,10 +684,16 @@ public class FlatTitlePane
 
 		@Override
 		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
-			// if menu bar is embedded, paint menu bar border
+			// paint bottom border
 			Border menuBarBorder = getMenuBarBorder();
-			if( menuBarBorder != null )
+			if( menuBarBorder != null ) {
+				// if menu bar is embedded, paint menu bar border
 				menuBarBorder.paintBorder( c, g, x, y, width, height );
+			} else if( borderColor != null && (rootPane.getJMenuBar() == null || !rootPane.getJMenuBar().isVisible()) ) {
+				// paint border between title pane and content if border color is specified
+				float lineHeight = UIScale.scale( (float) 1 );
+				FlatUIUtils.paintFilledRectangle( g, borderColor, x, y + height - lineHeight, width, lineHeight );
+			}
 
 			if( hasJBRCustomDecoration() )
 				JBRWindowTopBorder.getInstance().paintBorder( c, g, x, y, width, height );
@@ -591,7 +701,7 @@ public class FlatTitlePane
 
 		protected Border getMenuBarBorder() {
 			JMenuBar menuBar = rootPane.getJMenuBar();
-			return (menuBar != null && isMenuBarEmbedded()) ? menuBar.getBorder() : null;
+			return (menuBar != null && menuBar.isVisible() && isMenuBarEmbedded()) ? menuBar.getBorder() : null;
 		}
 	}
 
@@ -657,8 +767,7 @@ public class FlatTitlePane
 
 		//---- interface MouseListener ----
 
-		private int lastXOnScreen;
-		private int lastYOnScreen;
+		private Point dragOffset;
 
 		@Override
 		public void mouseClicked( MouseEvent e ) {
@@ -682,8 +791,10 @@ public class FlatTitlePane
 
 		@Override
 		public void mousePressed( MouseEvent e ) {
-			lastXOnScreen = e.getXOnScreen();
-			lastYOnScreen = e.getYOnScreen();
+			if( window == null )
+				return; // should newer occur
+
+			dragOffset = SwingUtilities.convertPoint( FlatTitlePane.this, e.getPoint(), window );
 		}
 
 		@Override public void mouseReleased( MouseEvent e ) {}
@@ -694,46 +805,45 @@ public class FlatTitlePane
 
 		@Override
 		public void mouseDragged( MouseEvent e ) {
+			if( window == null )
+				return; // should newer occur
+
 			if( hasJBRCustomDecoration() )
 				return; // do nothing if running in JBR
 
-			int xOnScreen = e.getXOnScreen();
-			int yOnScreen = e.getYOnScreen();
-			if( lastXOnScreen == xOnScreen && lastYOnScreen == yOnScreen )
-				return;
-
 			// restore window if it is maximized
 			if( window instanceof Frame ) {
 				Frame frame = (Frame) window;
 				int state = frame.getExtendedState();
 				if( (state & Frame.MAXIMIZED_BOTH) != 0 ) {
-					int maximizedX = window.getX();
-					int maximizedY = window.getY();
+					int maximizedWidth = window.getWidth();
 
 					// restore window size, which also moves window to pre-maximized location
 					frame.setExtendedState( state & ~Frame.MAXIMIZED_BOTH );
 
+					// fix drag offset to ensure that window remains under mouse position
+					// for the case that dragging starts in the right area of the maximized window
 					int restoredWidth = window.getWidth();
-					int newX = maximizedX;
-					JComponent rightComp = getComponentOrientation().isLeftToRight() ? buttonPanel : leftPanel;
-					if( xOnScreen >= maximizedX + restoredWidth - rightComp.getWidth() - 10 )
-						newX = xOnScreen + rightComp.getWidth() + 10 - restoredWidth;
-
-					// move window near mouse
-					window.setLocation( newX, maximizedY );
-					return;
+					int center = restoredWidth / 2;
+					if( dragOffset.x > center ) {
+						// this is same/similar to what Windows 10 does
+						if( dragOffset.x > maximizedWidth - center )
+							dragOffset.x = restoredWidth - (maximizedWidth - dragOffset.x);
+						else
+							dragOffset.x = center;
+					}
 				}
 			}
 
 			// compute new window location
-			int newX = window.getX() + (xOnScreen - lastXOnScreen);
-			int newY = window.getY() + (yOnScreen - lastYOnScreen);
+			int newX = e.getXOnScreen() - dragOffset.x;
+			int newY = e.getYOnScreen() - dragOffset.y;
+
+			if( newX == window.getX() && newY == window.getY() )
+				return;
 
 			// move window
 			window.setLocation( newX, newY );
-
-			lastXOnScreen = xOnScreen;
-			lastYOnScreen = yOnScreen;
 		}
 
 		@Override public void mouseMoved( MouseEvent e ) {}
@@ -745,8 +855,13 @@ public class FlatTitlePane
 			updateJBRHitTestSpotsAndTitleBarHeightLater();
 		}
 
+		@Override
+		public void componentShown( ComponentEvent e ) {
+			// necessary for the case that the frame is maximized before it is shown
+			frameStateChanged();
+		}
+
 		@Override public void componentMoved( ComponentEvent e ) {}
-		@Override public void componentShown( ComponentEvent e ) {}
 		@Override public void componentHidden( ComponentEvent e ) {}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatToggleButtonUI.java

@@ -22,7 +22,6 @@ import java.awt.Component;
 import java.awt.Graphics;
 import java.beans.PropertyChangeEvent;
 import javax.swing.AbstractButton;
-import javax.swing.ButtonModel;
 import javax.swing.JComponent;
 import javax.swing.JToggleButton;
 import javax.swing.UIManager;
@@ -50,18 +49,17 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault ToggleButton.startBackground				Color	optional; if set, a gradient paint is used and ToggleButton.background is ignored
  * @uiDefault ToggleButton.endBackground				Color	optional; if set, a gradient paint is used
  * @uiDefault ToggleButton.pressedBackground			Color
- * @uiDefault ToggleButton.disabledBackground			Color	optional
- * @uiDefault ToggleButton.disabledText					Color
- * @uiDefault ToggleButton.toolbar.hoverBackground		Color
- * @uiDefault ToggleButton.toolbar.pressedBackground	Color
- *
- * <!-- FlatToggleButtonUI -->
- *
  * @uiDefault ToggleButton.selectedBackground			Color
  * @uiDefault ToggleButton.selectedForeground			Color
+ * @uiDefault ToggleButton.disabledBackground			Color	optional
+ * @uiDefault ToggleButton.disabledText					Color
  * @uiDefault ToggleButton.disabledSelectedBackground	Color
+ * @uiDefault ToggleButton.toolbar.hoverBackground		Color
+ * @uiDefault ToggleButton.toolbar.pressedBackground	Color
  * @uiDefault ToggleButton.toolbar.selectedBackground	Color
  *
+ * <!-- FlatToggleButtonUI -->
+ *
  * @uiDefault ToggleButton.tab.underlineHeight			int
  * @uiDefault ToggleButton.tab.underlineColor			Color
  * @uiDefault ToggleButton.tab.disabledUnderlineColor	Color
@@ -75,12 +73,6 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatToggleButtonUI
 	extends FlatButtonUI
 {
-	protected Color selectedBackground;
-	protected Color selectedForeground;
-	protected Color disabledSelectedBackground;
-
-	protected Color toolbarSelectedBackground;
-
 	protected int tabUnderlineHeight;
 	protected Color tabUnderlineColor;
 	protected Color tabDisabledUnderlineColor;
@@ -90,12 +82,8 @@ public class FlatToggleButtonUI
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatToggleButtonUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatToggleButtonUI.class, FlatToggleButtonUI::new );
 	}
 
 	@Override
@@ -108,12 +96,6 @@ public class FlatToggleButtonUI
 		super.installDefaults( b );
 
 		if( !defaults_initialized ) {
-			selectedBackground = UIManager.getColor( "ToggleButton.selectedBackground" );
-			selectedForeground = UIManager.getColor( "ToggleButton.selectedForeground" );
-			disabledSelectedBackground = UIManager.getColor( "ToggleButton.disabledSelectedBackground" );
-
-			toolbarSelectedBackground = UIManager.getColor( "ToggleButton.toolbar.selectedBackground" );
-
 			tabUnderlineHeight = UIManager.getInt( "ToggleButton.tab.underlineHeight" );
 			tabUnderlineColor = UIManager.getColor( "ToggleButton.tab.underlineColor" );
 			tabDisabledUnderlineColor = UIManager.getColor( "ToggleButton.tab.disabledUnderlineColor" );
@@ -185,30 +167,4 @@ public class FlatToggleButtonUI
 		} else
 			super.paintBackground( g, c );
 	}
-
-	@Override
-	protected Color getBackground( JComponent c ) {
-		ButtonModel model = ((AbstractButton)c).getModel();
-
-		if( model.isSelected() ) {
-			// in toolbar use same colors for disabled and enabled because
-			// we assume that toolbar icon is shown disabled
-			boolean toolBarButton = isToolBarButton( c );
-			return buttonStateColor( c,
-				toolBarButton ? toolbarSelectedBackground : selectedBackground,
-				toolBarButton ? toolbarSelectedBackground : disabledSelectedBackground,
-				null, null,
-				toolBarButton ? toolbarPressedBackground : pressedBackground );
-		}
-
-		return super.getBackground( c );
-	}
-
-	@Override
-	protected Color getForeground( JComponent c ) {
-		if( c.isEnabled() && ((AbstractButton)c).isSelected() && !isToolBarButton( c ) )
-			return selectedForeground;
-
-		return super.getForeground( c );
-	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatToolBarBorder.java

@@ -16,15 +16,16 @@
 
 package com.formdev.flatlaf.ui;
 
-import static com.formdev.flatlaf.util.UIScale.*;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.Rectangle;
 import javax.swing.JToolBar;
 import javax.swing.SwingConstants;
 import javax.swing.UIManager;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Border for {@link javax.swing.JToolBar}.
@@ -39,7 +40,7 @@ public class FlatToolBarBorder
 {
 	private static final int DOT_COUNT = 4;
 	private static final int DOT_SIZE = 2;
-	private static final int GRIP_WIDTH = DOT_SIZE * 3;
+	private static final int GRIP_SIZE = DOT_SIZE * 3;
 
 	protected final Color gripColor = UIManager.getColor( "ToolBar.gripColor" );
 
@@ -64,35 +65,27 @@ public class FlatToolBarBorder
 	}
 
 	protected void paintGrip( Component c, Graphics g, int x, int y, int width, int height ) {
-		int dotSize = scale( DOT_SIZE );
-		int gapSize = dotSize;
-		int gripSize = (dotSize * DOT_COUNT) + ((gapSize * (DOT_COUNT - 1)));
+		Rectangle r = calculateGripBounds( c, x, y, width, height );
+		FlatUIUtils.paintGrip( g, r.x, r.y, r.width, r.height,
+			((JToolBar)c).getOrientation() == SwingConstants.VERTICAL,
+			DOT_COUNT, DOT_SIZE, DOT_SIZE, false );
+	}
 
-		// include toolbar margin in grip position calculation
-		Insets insets = getBorderInsets( c );
+	protected Rectangle calculateGripBounds( Component c, int x, int y, int width, int height ) {
+		// include toolbar margin in grip bounds calculation
+		Insets insets = super.getBorderInsets( c, new Insets( 0, 0, 0, 0 ) );
+		Rectangle r = FlatUIUtils.subtractInsets( new Rectangle( x, y, width, height ), insets );
 
-		// calculate grip position
-		boolean horizontal = ((JToolBar)c).getOrientation() == SwingConstants.HORIZONTAL;
-		if( horizontal ) {
-			if( c.getComponentOrientation().isLeftToRight() )
-				x += insets.left - (dotSize * 2);
-			else
-				x += width - insets.right + dotSize;
-			y += Math.round( (height - gripSize) / 2f );
-		} else {
-			// vertical
-			x += Math.round( (width - gripSize) / 2f );
-			y += insets.top - (dotSize * 2);
-		}
+		// calculate grip bounds
+		int gripSize = UIScale.scale( GRIP_SIZE );
+		if( ((JToolBar)c).getOrientation() == SwingConstants.HORIZONTAL ) {
+			if( !c.getComponentOrientation().isLeftToRight() )
+				r.x = r.x + r.width - gripSize;
+			r.width = gripSize;
+		} else
+			r.height = gripSize;
 
-		// paint dots
-		for( int i = 0; i < DOT_COUNT; i++ ) {
-			g.fillOval( x, y, dotSize, dotSize );
-			if( horizontal )
-				y += dotSize + gapSize;
-			else
-				x += dotSize + gapSize;
-		}
+		return r;
 	}
 
 	@Override
@@ -101,7 +94,7 @@ public class FlatToolBarBorder
 
 		// add grip inset if floatable
 		if( c instanceof JToolBar && ((JToolBar)c).isFloatable() ) {
-			int gripInset = scale( GRIP_WIDTH );
+			int gripInset = UIScale.scale( GRIP_SIZE );
 			if( ((JToolBar)c).getOrientation() == SwingConstants.HORIZONTAL ) {
 				if( c.getComponentOrientation().isLeftToRight() )
 					insets.left += gripInset;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatToolBarSeparatorUI.java

@@ -50,12 +50,8 @@ public class FlatToolBarSeparatorUI
 
 	private boolean defaults_initialized = false;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatToolBarSeparatorUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatToolBarSeparatorUI.class, FlatToolBarSeparatorUI::new );
 	}
 
 	@Override
@@ -110,13 +106,15 @@ public class FlatToolBarSeparatorUI
 		float lineWidth = scale( 1f );
 		float offset = scale( 2f );
 
-		FlatUIUtils.setRenderingHints( (Graphics2D) g );
+		Object[] oldRenderingHints = FlatUIUtils.setRenderingHints( g );
 		g.setColor( separatorColor );
 
 		if( isVertical( c ) )
 			((Graphics2D)g).fill( new Rectangle2D.Float( Math.round( (width - lineWidth) / 2f ), offset, lineWidth, height - (offset * 2) ) );
 		else
 			((Graphics2D)g).fill( new Rectangle2D.Float( offset, Math.round( (height - lineWidth) / 2f ), width - (offset * 2), lineWidth ) );
+
+		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
 	}
 
 	private boolean isVertical( JComponent c ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatToolTipUI.java

@@ -52,12 +52,8 @@ public class FlatToolTipUI
 {
 	private static PropertyChangeListener sharedPropertyChangedListener;
 
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatToolTipUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatToolTipUI.class, FlatToolTipUI::new );
 	}
 
 	@Override
@@ -94,6 +90,11 @@ public class FlatToolTipUI
 
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
+		// do not show tool tip if text is empty
+		String text = ((JToolTip)c).getTipText();
+		if( text == null || text.isEmpty() )
+			return new Dimension();
+
 		if( isMultiLine( c ) ) {
 			FontMetrics fm = c.getFontMetrics( c.getFont() );
 			Insets insets = c.getInsets();
@@ -115,7 +116,6 @@ public class FlatToolTipUI
 			FontMetrics fm = c.getFontMetrics( c.getFont() );
 			Insets insets = c.getInsets();
 
-			FlatUIUtils.setRenderingHints( (Graphics2D) g );
 			g.setColor( c.getForeground() );
 
 			List<String> lines = StringUtils.split( ((JToolTip)c).getTipText(), '\n' );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java

@@ -23,25 +23,34 @@ import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
 import java.awt.Insets;
 import java.awt.KeyboardFocusManager;
 import java.awt.Rectangle;
 import java.awt.RenderingHints;
 import java.awt.Shape;
+import java.awt.Window;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
+import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
 import java.awt.geom.Rectangle2D;
 import java.awt.geom.RoundRectangle2D;
+import java.util.IdentityHashMap;
+import java.util.WeakHashMap;
 import java.util.function.Consumer;
+import java.util.function.Supplier;
 import javax.swing.JComponent;
+import javax.swing.JTable;
 import javax.swing.LookAndFeel;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import javax.swing.border.CompoundBorder;
+import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.DerivedColor;
@@ -58,6 +67,8 @@ public class FlatUIUtils
 {
 	public static final boolean MAC_USE_QUARTZ = Boolean.getBoolean( "apple.awt.graphics.UseQuartz" );
 
+	private static WeakHashMap<LookAndFeel, IdentityHashMap<Object, ComponentUI>> sharedUIinstances = new WeakHashMap<>();
+
 	public static Rectangle addInsets( Rectangle r, Insets insets ) {
 		return new Rectangle(
 			r.x - insets.left,
@@ -120,6 +131,10 @@ public class FlatUIUtils
 		return (value instanceof Number) ? ((Number)value).floatValue() : defaultValue;
 	}
 
+	public static boolean isChevron( String arrowType ) {
+		return !"triangle".equals( arrowType );
+	}
+
 	public static Color nonUIResource( Color c ) {
 		return (c instanceof UIResource) ? new Color( c.getRGB(), true ) : c;
 	}
@@ -136,7 +151,26 @@ public class FlatUIUtils
 		return FlatClientProperties.clientPropertyInt( c, FlatClientProperties.MINIMUM_HEIGHT, minimumHeight );
 	}
 
-	public static boolean isTableCellEditor( Component c ) {
+	public static boolean isCellEditor( Component c ) {
+		// check whether used in cell editor (check 3 levels up)
+		Component c2 = c;
+		for( int i = 0; i <= 2 && c2 != null; i++ ) {
+			Container parent = c2.getParent();
+			if( parent instanceof JTable && ((JTable)parent).getEditorComponent() == c2 )
+				return true;
+
+			c2 = parent;
+		}
+
+		// check whether used as cell editor
+		//   Table.editor is set in JTable.GenericEditor constructor
+		//   Tree.cellEditor is set in sun.swing.FilePane.editFileName()
+		String name = c.getName();
+		if( "Table.editor".equals( name ) || "Tree.cellEditor".equals( name ) )
+			return true;
+
+		// for using combo box as cell editor in table
+		//   JComboBox.isTableCellEditor is set in javax.swing.DefaultCellEditor(JComboBox) constructor
 		return c instanceof JComponent && Boolean.TRUE.equals( ((JComponent)c).getClientProperty( "JComboBox.isTableCellEditor" ) );
 	}
 
@@ -150,9 +184,21 @@ public class FlatUIUtils
 			keyboardFocusManager.getActiveWindow() == SwingUtilities.windowForComponent( c );
 	}
 
-	public static boolean isRoundRect( Component c ) {
-		return c instanceof JComponent && FlatClientProperties.clientPropertyBoolean(
-			(JComponent) c, FlatClientProperties.COMPONENT_ROUND_RECT, false );
+	/**
+	 * Returns whether the given component is in a window that is in full-screen mode.
+	 */
+	public static boolean isFullScreen( Component c ) {
+		GraphicsConfiguration gc = c.getGraphicsConfiguration();
+		GraphicsDevice gd = (gc != null) ? gc.getDevice() : null;
+		Window fullScreenWindow = (gd != null) ? gd.getFullScreenWindow() : null;
+		return (fullScreenWindow != null && fullScreenWindow == SwingUtilities.windowForComponent( c ));
+	}
+
+	public static Boolean isRoundRect( Component c ) {
+		return (c instanceof JComponent)
+			? FlatClientProperties.clientPropertyBooleanStrict(
+				(JComponent) c, FlatClientProperties.COMPONENT_ROUND_RECT, null )
+			: null;
 	}
 
 	/**
@@ -194,10 +240,57 @@ public class FlatUIUtils
 	/**
 	 * Sets rendering hints used for painting.
 	 */
-	public static void setRenderingHints( Graphics2D g ) {
-		g.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
-		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL,
+	public static Object[] setRenderingHints( Graphics g ) {
+		Graphics2D g2 = (Graphics2D) g;
+		Object[] oldRenderingHints = new Object[] {
+			g2.getRenderingHint( RenderingHints.KEY_ANTIALIASING ),
+			g2.getRenderingHint( RenderingHints.KEY_STROKE_CONTROL ),
+		};
+
+		g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
+		g2.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL,
 			MAC_USE_QUARTZ ? RenderingHints.VALUE_STROKE_PURE : RenderingHints.VALUE_STROKE_NORMALIZE );
+
+		return oldRenderingHints;
+	}
+
+	/**
+	 * Resets rendering hints previously set with {@link #setRenderingHints}.
+	 */
+	public static void resetRenderingHints( Graphics g, Object[] oldRenderingHints ) {
+		Graphics2D g2 = (Graphics2D) g;
+		g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, oldRenderingHints[0] );
+		g2.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, oldRenderingHints[1] );
+	}
+
+	/**
+	 * Temporary resets rendering hints set with {@link #setRenderingHints}
+	 * and runs the given runnable.
+	 * <p>
+	 * This is intended for painting text while rendering hints are set.
+	 * <p>
+	 * If text antialiasing is disabled (in OS system settings or via
+	 * {@code -Dawt.useSystemAAFontSettings=off}), but general antialiasing is enabled,
+	 * then text is still painted using some kind of "grayscale" antialiasing,
+	 * which may make the text look bold (depends on font and font size).
+	 * To avoid this, temporary disable general antialiasing.
+	 * This does not affect text rendering if text antialiasing is enabled (usually the default).
+	 */
+	public static void runWithoutRenderingHints( Graphics g, Object[] oldRenderingHints, Runnable runnable ) {
+		if( oldRenderingHints == null ) {
+			runnable.run();
+			return;
+		}
+
+		Graphics2D g2 = (Graphics2D) g;
+		Object[] oldRenderingHints2 = new Object[] {
+			g2.getRenderingHint( RenderingHints.KEY_ANTIALIASING ),
+			g2.getRenderingHint( RenderingHints.KEY_STROKE_CONTROL ),
+		};
+
+		resetRenderingHints( g2, oldRenderingHints );
+		runnable.run();
+		resetRenderingHints( g2, oldRenderingHints2 );
 	}
 
 	public static Color deriveColor( Color color, Color baseColor ) {
@@ -210,7 +303,7 @@ public class FlatUIUtils
 	 * Paints an outer border, which is usually a focus border.
 	 * <p>
 	 * The outside bounds of the painted border are {@code x,y,width,height}.
-	 * The line width of the painted border is {@code focusWidth + lineWidth}.
+	 * The line thickness of the painted border is {@code focusWidth + lineWidth}.
 	 * The given arc diameter refers to the inner rectangle ({@code x,y,width,height} minus {@code focusWidth}).
 	 *
 	 * @see #paintComponentBorder
@@ -219,6 +312,9 @@ public class FlatUIUtils
 	public static void paintComponentOuterBorder( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float lineWidth, float arc )
 	{
+		if( focusWidth + lineWidth == 0 )
+			return; // nothing to paint
+
 		double systemScaleFactor = UIScale.getSystemScaleFactor( g );
 		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
 			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
@@ -255,6 +351,7 @@ public class FlatUIUtils
 	 * <p>
 	 * The outside bounds of the painted border are
 	 * {@code x + focusWidth, y + focusWidth, width - (focusWidth * 2), height - (focusWidth * 2)}.
+	 * The line thickness of the painted border is {@code lineWidth}.
 	 * The given arc diameter refers to the painted rectangle (and not to {@code x,y,width,height}).
 	 *
 	 * @see #paintComponentOuterBorder
@@ -263,6 +360,9 @@ public class FlatUIUtils
 	public static void paintComponentBorder( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float lineWidth, float arc )
 	{
+		if( lineWidth == 0 )
+			return; // nothing to paint
+
 		double systemScaleFactor = UIScale.getSystemScaleFactor( g );
 		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
 			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
@@ -344,6 +444,52 @@ public class FlatUIUtils
 		return new RoundRectangle2D.Float( x, y, w, h, arc, arc );
 	}
 
+	static void paintFilledRectangle( Graphics g, Color color, float x, float y, float w, float h ) {
+		Graphics2D g2 = (Graphics2D) g.create();
+		try {
+			FlatUIUtils.setRenderingHints( g2 );
+			g2.setColor( color );
+			g2.fill( new Rectangle2D.Float( x, y, w, h ) );
+		} finally {
+			g2.dispose();
+		}
+	}
+
+	public static void paintGrip( Graphics g, int x, int y, int width, int height,
+		boolean horizontal, int dotCount, int dotSize, int gap, boolean centerPrecise )
+	{
+		dotSize = UIScale.scale( dotSize );
+		gap = UIScale.scale( gap );
+		int gripSize = (dotSize * dotCount) + ((gap * (dotCount - 1)));
+
+		// calculate grip position
+		float gx;
+		float gy;
+		if( horizontal ) {
+			gx = x + Math.round( (width - gripSize) / 2f );
+			gy = y + ((height - dotSize) / 2f);
+
+			if( !centerPrecise )
+				gy = Math.round( gy );
+		} else {
+			// vertical
+			gx = x + ((width - dotSize) / 2f);
+			gy = y + Math.round( (height - gripSize) / 2f );
+
+			if( !centerPrecise )
+				gx = Math.round( gx );
+		}
+
+		// paint dots
+		for( int i = 0; i < dotCount; i++ ) {
+			((Graphics2D)g).fill( new Ellipse2D.Float( gx, gy, dotSize, dotSize ) );
+			if( horizontal )
+				gx += dotSize + gap;
+			else
+				gy += dotSize + gap;
+		}
+	}
+
 	/**
 	 * Fill background with parent's background color because the visible component
 	 * is smaller than its bounds (for the focus decoration).
@@ -420,15 +566,31 @@ public class FlatUIUtils
 		float x2 = x + width;
 		float y2 = y + height;
 
+		// same constant as in java.awt.geom.EllipseIterator.CtrlVal used to paint circles
+		double c = 0.5522847498307933;
+		double ci = 1. - c;
+		double ciTopLeft = arcTopLeft * ci;
+		double ciTopRight = arcTopRight * ci;
+		double ciBottomLeft = arcBottomLeft * ci;
+		double ciBottomRight = arcBottomRight * ci;
+
 		Path2D rect = new Path2D.Float();
-		rect.moveTo( x2 - arcTopRight, y );
-		rect.quadTo( x2, y, x2, y + arcTopRight );
-		rect.lineTo( x2, y2 - arcBottomRight );
-		rect.quadTo( x2, y2, x2 - arcBottomRight, y2 );
-		rect.lineTo( x + arcBottomLeft, y2 );
-		rect.quadTo( x, y2, x, y2 - arcBottomLeft );
-		rect.lineTo( x, y + arcTopLeft );
-		rect.quadTo( x, y, x + arcTopLeft, y );
+		rect.moveTo(  x2 - arcTopRight, y );
+		rect.curveTo( x2 - ciTopRight, y,
+					  x2, y + ciTopRight,
+					  x2, y + arcTopRight );
+		rect.lineTo(  x2, y2 - arcBottomRight );
+		rect.curveTo( x2, y2 - ciBottomRight,
+					  x2 - ciBottomRight, y2,
+					  x2 - arcBottomRight, y2 );
+		rect.lineTo(  x + arcBottomLeft, y2 );
+		rect.curveTo( x + ciBottomLeft, y2,
+					  x, y2 - ciBottomLeft,
+					  x, y2 - arcBottomLeft );
+		rect.lineTo(  x, y + arcTopLeft );
+		rect.curveTo( x, y + ciTopLeft,
+					  x + ciTopLeft, y,
+					  x + arcTopLeft, y );
 		rect.closePath();
 
 		return rect;
@@ -505,6 +667,19 @@ public class FlatUIUtils
 		return explicitlySet;
 	}
 
+	/**
+	 * Creates a shared component UI for the given key and the current Laf.
+	 * Each Laf instance has its own shared component UI instance.
+	 * <p>
+	 * This is for GUI builders that support Laf switching and
+	 * may use multiple Laf instances at the same time.
+	 */
+	public static ComponentUI createSharedUI( Object key, Supplier<ComponentUI> newInstanceSupplier ) {
+		return sharedUIinstances
+			.computeIfAbsent( UIManager.getLookAndFeel(), k -> new IdentityHashMap<>() )
+			.computeIfAbsent( key, k -> newInstanceSupplier.get() );
+	}
+
 	//---- class HoverListener ------------------------------------------------
 
 	public static class HoverListener

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatViewportUI.java

@@ -38,12 +38,8 @@ import javax.swing.plaf.basic.BasicViewportUI;
 public class FlatViewportUI
 	extends BasicViewportUI
 {
-	private static ComponentUI instance;
-
 	public static ComponentUI createUI( JComponent c ) {
-		if( instance == null )
-			instance = new FlatViewportUI();
-		return instance;
+		return FlatUIUtils.createSharedUI( FlatViewportUI.class, FlatViewportUI::new );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowResizer.java

@@ -17,11 +17,13 @@
 package com.formdev.flatlaf.ui;
 
 import static java.awt.Cursor.*;
+import static javax.swing.SwingConstants.*;
 import java.awt.Container;
 import java.awt.Dialog;
 import java.awt.Dimension;
 import java.awt.Frame;
 import java.awt.Graphics;
+import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.Toolkit;
 import java.awt.Window;
@@ -34,54 +36,59 @@ import java.awt.event.WindowEvent;
 import java.awt.event.WindowStateListener;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
+import java.util.function.Supplier;
+import javax.swing.DesktopManager;
 import javax.swing.JComponent;
+import javax.swing.JInternalFrame;
 import javax.swing.JLayeredPane;
 import javax.swing.JRootPane;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
- * Resizes frames and dialogs.
+ * Resizes frames, dialogs or internal frames.
+ * <p>
+ * Could also be used to implement resize support for any Swing component
+ * by creating a new subclass.
  *
  * @author Karl Tauber
  */
-public class FlatWindowResizer
-	implements PropertyChangeListener, WindowStateListener, ComponentListener
+public abstract class FlatWindowResizer
+	implements PropertyChangeListener, ComponentListener
 {
 	protected final static Integer WINDOW_RESIZER_LAYER = JLayeredPane.DRAG_LAYER + 1;
 
-	protected final JRootPane rootPane;
+	protected final JComponent resizeComp;
 
 	protected final int borderDragThickness = FlatUIUtils.getUIInt( "RootPane.borderDragThickness", 5 );
 	protected final int cornerDragWidth = FlatUIUtils.getUIInt( "RootPane.cornerDragWidth", 16 );
 	protected final boolean honorFrameMinimumSizeOnResize = UIManager.getBoolean( "RootPane.honorFrameMinimumSizeOnResize" );
 	protected final boolean honorDialogMinimumSizeOnResize = UIManager.getBoolean( "RootPane.honorDialogMinimumSizeOnResize" );
 
-	protected final JComponent north;
-	protected final JComponent south;
-	protected final JComponent west;
-	protected final JComponent east;
+	protected final DragBorderComponent topDragComp;
+	protected final DragBorderComponent bottomDragComp;
+	protected final DragBorderComponent leftDragComp;
+	protected final DragBorderComponent rightDragComp;
 
-	protected Window window;
+	protected FlatWindowResizer( JComponent resizeComp ) {
+		this.resizeComp = resizeComp;
 
-	public FlatWindowResizer( JRootPane rootPane ) {
-		this.rootPane = rootPane;
+		topDragComp = createDragBorderComponent( NW_RESIZE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR );
+		bottomDragComp = createDragBorderComponent( SW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR );
+		leftDragComp = createDragBorderComponent( NW_RESIZE_CURSOR, W_RESIZE_CURSOR, SW_RESIZE_CURSOR );
+		rightDragComp = createDragBorderComponent( NE_RESIZE_CURSOR, E_RESIZE_CURSOR, SE_RESIZE_CURSOR );
 
-		north = createDragBorderComponent( NW_RESIZE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR );
-		south = createDragBorderComponent( SW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR );
-		west = createDragBorderComponent( NW_RESIZE_CURSOR, W_RESIZE_CURSOR, SW_RESIZE_CURSOR );
-		east = createDragBorderComponent( NE_RESIZE_CURSOR, E_RESIZE_CURSOR, SE_RESIZE_CURSOR );
+		Container cont = (resizeComp instanceof JRootPane) ? ((JRootPane)resizeComp).getLayeredPane() : resizeComp;
+		Object cons = (cont instanceof JLayeredPane) ? WINDOW_RESIZER_LAYER : null;
+		cont.add( topDragComp, cons, 0 );
+		cont.add( bottomDragComp, cons, 1 );
+		cont.add( leftDragComp, cons, 2 );
+		cont.add( rightDragComp, cons, 3 );
 
-		JLayeredPane layeredPane = rootPane.getLayeredPane();
-		layeredPane.add( north, WINDOW_RESIZER_LAYER );
-		layeredPane.add( south, WINDOW_RESIZER_LAYER );
-		layeredPane.add( west, WINDOW_RESIZER_LAYER );
-		layeredPane.add( east, WINDOW_RESIZER_LAYER );
+		resizeComp.addComponentListener( this );
+		resizeComp.addPropertyChangeListener( "ancestor", this );
 
-		rootPane.addComponentListener( this );
-		rootPane.addPropertyChangeListener( "ancestor", this );
-
-		if( rootPane.isDisplayable() )
+		if( resizeComp.isDisplayable() )
 			addNotify();
 	}
 
@@ -92,85 +99,96 @@ public class FlatWindowResizer
 	public void uninstall() {
 		removeNotify();
 
-		rootPane.removeComponentListener( this );
-		rootPane.removePropertyChangeListener( "ancestor", this );
+		resizeComp.removeComponentListener( this );
+		resizeComp.removePropertyChangeListener( "ancestor", this );
 
-		JLayeredPane layeredPane = rootPane.getLayeredPane();
-		layeredPane.remove( north );
-		layeredPane.remove( south );
-		layeredPane.remove( west );
-		layeredPane.remove( east );
+		Container cont = topDragComp.getParent();
+		cont.remove( topDragComp );
+		cont.remove( bottomDragComp );
+		cont.remove( leftDragComp );
+		cont.remove( rightDragComp );
 	}
 
 	public void doLayout() {
-		if( !north.isVisible() )
+		if( !topDragComp.isVisible() )
 			return;
 
 		int x = 0;
 		int y = 0;
-		int width = rootPane.getWidth();
-		int height = rootPane.getHeight();
+		int width = resizeComp.getWidth();
+		int height = resizeComp.getHeight();
 		if( width == 0 || height == 0 )
 			return;
 
+		Insets resizeInsets = getResizeInsets();
 		int thickness = UIScale.scale( borderDragThickness );
-		int y2 = y + thickness;
-		int height2 = height - (thickness * 2);
+		int topThickness = Math.max( resizeInsets.top, thickness );
+		int bottomThickness = Math.max( resizeInsets.bottom, thickness );
+		int leftThickness = Math.max( resizeInsets.left, thickness );
+		int rightThickness = Math.max( resizeInsets.right, thickness );
+		int y2 = y + topThickness;
+		int height2 = height - topThickness - bottomThickness;
 
-		north.setBounds( x, y, width, thickness );
-		south.setBounds( x, y + height - thickness, width, thickness );
-		west.setBounds( x, y2, thickness, height2 );
-		east.setBounds( x + width - thickness, y2, thickness, height2 );
+		// set bounds of drag components
+		topDragComp.setBounds( x, y, width, topThickness );
+		bottomDragComp.setBounds( x, y + height - bottomThickness, width, bottomThickness );
+		leftDragComp.setBounds( x, y2, leftThickness, height2 );
+		rightDragComp.setBounds( x + width - rightThickness, y2, rightThickness, height2 );
+
+		// set corner drag widths
+		int cornerDelta = UIScale.scale( cornerDragWidth - borderDragThickness );
+		topDragComp.setCornerDragWidths( leftThickness + cornerDelta, rightThickness + cornerDelta );
+		bottomDragComp.setCornerDragWidths( leftThickness + cornerDelta, rightThickness + cornerDelta );
+		leftDragComp.setCornerDragWidths( cornerDelta, cornerDelta );
+		rightDragComp.setCornerDragWidths( cornerDelta, cornerDelta );
+	}
+
+	protected Insets getResizeInsets() {
+		return new Insets( 0, 0, 0, 0 );
 	}
 
 	protected void addNotify() {
-		Container parent = rootPane.getParent();
-		window = (parent instanceof Window) ? (Window) parent : null;
-		if( window instanceof Frame ) {
-			window.addPropertyChangeListener( "resizable", this );
-			window.addWindowStateListener( this );
-		}
-
 		updateVisibility();
 	}
 
 	protected void removeNotify() {
-		if( window instanceof Frame ) {
-			window.removePropertyChangeListener( "resizable", this );
-			window.removeWindowStateListener( this );
-		}
-		window = null;
-
 		updateVisibility();
 	}
 
 	protected void updateVisibility() {
 		boolean visible = isWindowResizable();
-		if( visible == north.isVisible() )
+		if( visible == topDragComp.isVisible() )
 			return;
 
-		north.setVisible( visible );
-		south.setVisible( visible );
-		west.setVisible( visible );
+		topDragComp.setVisible( visible );
+		bottomDragComp.setVisible( visible );
+		leftDragComp.setVisible( visible );
 
 		// The east component is not hidden, instead its bounds are set to 0,0,1,1 and
 		// it is disabled. This is necessary so that DragBorderComponent.paintComponent() is invoked.
-		east.setEnabled( visible );
+		rightDragComp.setEnabled( visible );
 		if( visible ) {
-			east.setVisible( true ); // necessary because it is initially invisible
+			rightDragComp.setVisible( true ); // necessary because it is initially invisible
 			doLayout();
 		} else
-			east.setBounds( 0, 0, 1, 1 );
+			rightDragComp.setBounds( 0, 0, 1, 1 );
 	}
 
-	protected boolean isWindowResizable() {
-		if( window instanceof Frame )
-			return ((Frame)window).isResizable() && (((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) == 0;
-		if( window instanceof Dialog )
-			return ((Dialog)window).isResizable();
+	boolean isDialog() {
 		return false;
 	}
 
+	protected abstract boolean isWindowResizable();
+	protected abstract Rectangle getWindowBounds();
+	protected abstract void setWindowBounds( Rectangle r );
+	protected abstract boolean honorMinimumSizeOnResize();
+	protected abstract Dimension getWindowMinimumSize();
+
+	protected void beginResizing( int direction ) {}
+	protected void endResizing() {}
+
+	//---- interface PropertyChangeListener ----
+
 	@Override
 	public void propertyChange( PropertyChangeEvent e ) {
 		switch( e.getPropertyName() ) {
@@ -187,10 +205,7 @@ public class FlatWindowResizer
 		}
 	}
 
-	@Override
-	public void windowStateChanged( WindowEvent e ) {
-		updateVisibility();
-	}
+	//---- interface ComponentListener ----
 
 	@Override
 	public void componentResized( ComponentEvent e ) {
@@ -201,6 +216,165 @@ public class FlatWindowResizer
 	@Override public void componentShown( ComponentEvent e ) {}
 	@Override public void componentHidden( ComponentEvent e ) {}
 
+	//---- class WindowResizer ------------------------------------------------
+
+	/**
+	 * Resizes frames and dialogs.
+	 */
+	public static class WindowResizer
+		extends FlatWindowResizer
+		implements WindowStateListener
+	{
+		protected Window window;
+
+		public WindowResizer( JRootPane rootPane ) {
+			super( rootPane );
+		}
+
+		@Override
+		protected void addNotify() {
+			Container parent = resizeComp.getParent();
+			window = (parent instanceof Window) ? (Window) parent : null;
+			if( window instanceof Frame ) {
+				window.addPropertyChangeListener( "resizable", this );
+				window.addWindowStateListener( this );
+			}
+
+			super.addNotify();
+		}
+
+		@Override
+		protected void removeNotify() {
+			if( window instanceof Frame ) {
+				window.removePropertyChangeListener( "resizable", this );
+				window.removeWindowStateListener( this );
+			}
+			window = null;
+
+			super.removeNotify();
+		}
+
+		@Override
+		protected boolean isWindowResizable() {
+			if( FlatUIUtils.isFullScreen( resizeComp ) )
+				return false;
+			if( window instanceof Frame )
+				return ((Frame)window).isResizable() && (((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) == 0;
+			if( window instanceof Dialog )
+				return ((Dialog)window).isResizable();
+			return false;
+		}
+
+		@Override
+		protected Rectangle getWindowBounds() {
+			return window.getBounds();
+		}
+
+		@Override
+		protected void setWindowBounds( Rectangle r ) {
+			window.setBounds( r );
+
+			// immediately layout drag border components
+			doLayout();
+
+			if( Toolkit.getDefaultToolkit().isDynamicLayoutActive() ) {
+				window.validate();
+				resizeComp.repaint();
+			}
+		}
+
+		@Override
+		protected boolean honorMinimumSizeOnResize() {
+			return
+				(honorFrameMinimumSizeOnResize && window instanceof Frame) ||
+				(honorDialogMinimumSizeOnResize && window instanceof Dialog);
+		}
+
+		@Override
+		protected Dimension getWindowMinimumSize() {
+			return window.getMinimumSize();
+		}
+
+		@Override
+		boolean isDialog() {
+			return window instanceof Dialog;
+		}
+
+		@Override
+		public void windowStateChanged( WindowEvent e ) {
+			updateVisibility();
+		}
+	}
+
+	//---- class InternalFrameResizer -----------------------------------------
+
+	/**
+	 * Resizes internal frames.
+	 */
+	public static class InternalFrameResizer
+		extends FlatWindowResizer
+	{
+		protected final Supplier<DesktopManager> desktopManager;
+
+		public InternalFrameResizer( JInternalFrame frame, Supplier<DesktopManager> desktopManager ) {
+			super( frame );
+			this.desktopManager = desktopManager;
+
+			frame.addPropertyChangeListener( "resizable", this );
+		}
+
+		@Override
+		public void uninstall() {
+			getFrame().removePropertyChangeListener( "resizable", this );
+
+			super.uninstall();
+		}
+
+		private JInternalFrame getFrame() {
+			return (JInternalFrame) resizeComp;
+		}
+
+		@Override
+		protected Insets getResizeInsets() {
+			return getFrame().getInsets();
+		}
+
+		@Override
+		protected boolean isWindowResizable() {
+			return getFrame().isResizable();
+		}
+
+		@Override
+		protected Rectangle getWindowBounds() {
+			return getFrame().getBounds();
+		}
+
+		@Override
+		protected void setWindowBounds( Rectangle r ) {
+			desktopManager.get().resizeFrame( getFrame(), r.x, r.y, r.width, r.height );
+		}
+
+		@Override
+		protected boolean honorMinimumSizeOnResize() {
+			return true;
+		}
+
+		@Override
+		protected Dimension getWindowMinimumSize() {
+			return getFrame().getMinimumSize();
+		}
+
+		@Override
+		protected void beginResizing( int direction ) {
+			desktopManager.get().beginResizingFrame( getFrame(), direction );
+		}
+
+		@Override
+		protected void endResizing() {
+			desktopManager.get().endResizingFrame( getFrame() );
+		}
+	}
+
 	//---- class DragBorderComponent ------------------------------------------
 
 	protected class DragBorderComponent
@@ -212,9 +386,15 @@ public class FlatWindowResizer
 		private final int trailingResizeDir;
 
 		private int resizeDir = -1;
-		private int dragStartMouseX;
-		private int dragStartMouseY;
-		private Rectangle dragStartWindowBounds;
+
+		private int leadingCornerDragWidth;
+		private int trailingCornerDragWidth;
+
+		// offsets of mouse position to window edges
+		private int dragLeftOffset;
+		private int dragRightOffset;
+		private int dragTopOffset;
+		private int dragBottomOffset;
 
 		protected DragBorderComponent( int leadingResizeDir, int centerResizeDir, int trailingResizeDir ) {
 			this.leadingResizeDir = leadingResizeDir;
@@ -228,6 +408,11 @@ public class FlatWindowResizer
 			addMouseMotionListener( this );
 		}
 
+		void setCornerDragWidths( int leading, int trailing ) {
+			leadingCornerDragWidth = leading;
+			trailingCornerDragWidth = trailing;
+		}
+
 		protected void setResizeDir( int resizeDir ) {
 			if( this.resizeDir == resizeDir )
 				return;
@@ -246,13 +431,26 @@ public class FlatWindowResizer
 		protected void paintComponent( Graphics g ) {
 			super.paintChildren( g );
 
-			// this is necessary because Dialog.setResizable() does not fire events
-			if( window instanceof Dialog )
-				updateVisibility();
+			// for dialogs: necessary because Dialog.setResizable() does not fire events
+			// for frames: necessary because GraphicsDevice.setFullScreenWindow() does not fire events
+			updateVisibility();
 
 /*debug
+			int width = getWidth();
+			int height = getHeight();
+
+			g.setColor( java.awt.Color.blue );
+			boolean topOrBottom = (centerResizeDir == N_RESIZE_CURSOR || centerResizeDir == S_RESIZE_CURSOR);
+			if( topOrBottom ) {
+				g.drawLine( leadingCornerDragWidth, 0, leadingCornerDragWidth, height );
+				g.drawLine( width - trailingCornerDragWidth, 0, width - trailingCornerDragWidth, height );
+			} else {
+				g.drawLine( 0, leadingCornerDragWidth, width, leadingCornerDragWidth );
+				g.drawLine( 0, height - trailingCornerDragWidth, width, height - trailingCornerDragWidth );
+			}
+
 			g.setColor( java.awt.Color.red );
-			g.drawRect( 0, 0, getWidth() - 1, getHeight() - 1 );
+			g.drawRect( 0, 0, width - 1, height - 1 );
 debug*/
 		}
 
@@ -262,114 +460,116 @@ debug*/
 
 		@Override
 		public void mousePressed( MouseEvent e ) {
-			if( window == null )
+			if( !isWindowResizable() )
 				return;
 
-			dragStartMouseX = e.getXOnScreen();
-			dragStartMouseY = e.getYOnScreen();
-			dragStartWindowBounds = window.getBounds();
+			int xOnScreen = e.getXOnScreen();
+			int yOnScreen = e.getYOnScreen();
+			Rectangle windowBounds = getWindowBounds();
+
+			// compute offsets of mouse position to window edges
+			dragLeftOffset = xOnScreen - windowBounds.x;
+			dragTopOffset = yOnScreen - windowBounds.y;
+			dragRightOffset = windowBounds.x + windowBounds.width - xOnScreen;
+			dragBottomOffset = windowBounds.y + windowBounds.height - yOnScreen;
+
+			int direction = 0;
+			switch( resizeDir ) {
+				case N_RESIZE_CURSOR:	direction = NORTH; break;
+				case S_RESIZE_CURSOR:	direction = SOUTH; break;
+				case W_RESIZE_CURSOR:	direction = WEST; break;
+				case E_RESIZE_CURSOR:	direction = EAST; break;
+				case NW_RESIZE_CURSOR:	direction = NORTH_WEST; break;
+				case NE_RESIZE_CURSOR:	direction = NORTH_EAST; break;
+				case SW_RESIZE_CURSOR:	direction = SOUTH_WEST; break;
+				case SE_RESIZE_CURSOR:	direction = SOUTH_EAST; break;
+			}
+			beginResizing( direction );
 		}
 
 		@Override
 		public void mouseReleased( MouseEvent e ) {
-			dragStartWindowBounds = null;
+			if( !isWindowResizable() )
+				return;
+
+			dragLeftOffset = dragRightOffset = dragTopOffset = dragBottomOffset = 0;
+
+			endResizing();
 		}
 
-		@Override
-		public void mouseEntered( MouseEvent e ) {
-		}
-
-		@Override
-		public void mouseExited( MouseEvent e ) {
-		}
+		@Override public void mouseEntered( MouseEvent e ) {}
+		@Override public void mouseExited( MouseEvent e ) {}
 
 		@Override
 		public void mouseMoved( MouseEvent e ) {
-			boolean topBottom = (centerResizeDir == N_RESIZE_CURSOR || centerResizeDir == S_RESIZE_CURSOR);
-			int xy = topBottom ? e.getX() : e.getY();
-			int wh = topBottom ? getWidth() : getHeight();
-			int cornerWH = UIScale.scale( cornerDragWidth - (topBottom ? 0 : borderDragThickness) );
+			boolean topOrBottom = (centerResizeDir == N_RESIZE_CURSOR || centerResizeDir == S_RESIZE_CURSOR);
+			int xy = topOrBottom ? e.getX() : e.getY();
+			int wh = topOrBottom ? getWidth() : getHeight();
 
-			setResizeDir( xy <= cornerWH
+			setResizeDir( xy <= leadingCornerDragWidth
 				? leadingResizeDir
-				: (xy >= wh - cornerWH
+				: (xy >= wh - trailingCornerDragWidth
 					? trailingResizeDir
 					: centerResizeDir) );
 		}
 
 		@Override
 		public void mouseDragged( MouseEvent e ) {
-			if( dragStartWindowBounds == null )
-				return;
-
 			if( !isWindowResizable() )
 				return;
 
-			int mouseDeltaX = e.getXOnScreen() - dragStartMouseX;
-			int mouseDeltaY = e.getYOnScreen() - dragStartMouseY;
+			int xOnScreen = e.getXOnScreen();
+			int yOnScreen = e.getYOnScreen();
 
-			int deltaX = 0;
-            int deltaY = 0;
-            int deltaWidth = 0;
-            int deltaHeight = 0;
-
-			// north
-			if( resizeDir == N_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR ) {
-				deltaY = mouseDeltaY;
-				deltaHeight = -mouseDeltaY;
-			}
-
-			// south
-			if( resizeDir == S_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
-				deltaHeight = mouseDeltaY;
-
-			// west
-			if( resizeDir == W_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR ) {
-				deltaX = mouseDeltaX;
-				deltaWidth = -mouseDeltaX;
-			}
-
-			// east
-			if( resizeDir == E_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
-				deltaWidth = mouseDeltaX;
+			// Get current window bounds and compute new bounds based them.
+			// This is necessary because window manager may alter window bounds while resizing.
+			// E.g. when having two monitors with different scale factors and resizing
+			// a window on first screen to the second screen, then the window manager may
+			// decide at some point that the window should be only on second screen
+			// and adjusts its bounds.
+			Rectangle oldBounds = getWindowBounds();
+			Rectangle newBounds = new Rectangle( oldBounds );
 
 			// compute new window bounds
-			Rectangle newBounds = new Rectangle( dragStartWindowBounds );
-			newBounds.x += deltaX;
-			newBounds.y += deltaY;
-			newBounds.width += deltaWidth;
-			newBounds.height += deltaHeight;
+
+			// top
+			if( resizeDir == N_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR ) {
+				newBounds.y = yOnScreen - dragTopOffset;
+				newBounds.height += (oldBounds.y - newBounds.y);
+			}
+
+			// bottom
+			if( resizeDir == S_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
+				newBounds.height = (yOnScreen + dragBottomOffset) - newBounds.y;
+
+			// left
+			if( resizeDir == W_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR ) {
+				newBounds.x = xOnScreen - dragLeftOffset;
+				newBounds.width += (oldBounds.x - newBounds.x);
+			}
+
+			// right
+			if( resizeDir == E_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
+				newBounds.width = (xOnScreen + dragRightOffset) - newBounds.x;
 
 			// apply minimum window size
-			boolean honorMinimumSizeOnResize =
-				(honorFrameMinimumSizeOnResize && window instanceof Frame) ||
-				(honorDialogMinimumSizeOnResize && window instanceof Dialog);
-			Dimension minimumSize = honorMinimumSizeOnResize ? window.getMinimumSize() : null;
+			Dimension minimumSize = honorMinimumSizeOnResize() ? getWindowMinimumSize() : null;
 			if( minimumSize == null )
 				minimumSize = UIScale.scale( new Dimension( 150, 50 ) );
 			if( newBounds.width < minimumSize.width ) {
-				if( deltaX != 0 )
+				if( newBounds.x != oldBounds.x )
 					newBounds.x -= (minimumSize.width - newBounds.width);
 				newBounds.width = minimumSize.width;
 			}
 			if( newBounds.height < minimumSize.height ) {
-				if( deltaY != 0 )
+				if( newBounds.y != oldBounds.y )
 					newBounds.y -= (minimumSize.height - newBounds.height);
 				newBounds.height = minimumSize.height;
 			}
 
 			// set window bounds
-			if( !newBounds.equals( dragStartWindowBounds ) ) {
-				window.setBounds( newBounds );
-
-				// immediately layout drag border components
-				FlatWindowResizer.this.doLayout();
-
-				if( Toolkit.getDefaultToolkit().isDynamicLayoutActive() ) {
-					window.validate();
-					rootPane.repaint();
-				}
-			}
+			if( !newBounds.equals( oldBounds ) )
+				setWindowBounds( newBounds );
 		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/JBRCustomDecorations.java

@@ -191,7 +191,7 @@ public class JBRCustomDecorations
 		initialized = true;
 
 		// requires JetBrains Runtime 11 and Windows 10
-		if( !SystemInfo.IS_JETBRAINS_JVM_11_OR_LATER || !SystemInfo.IS_WINDOWS_10_OR_LATER )
+		if( !SystemInfo.isJetBrainsJVM_11_orLater || !SystemInfo.isWindows_10_orLater )
 			return;
 
 		if( !FlatSystemProperties.getBoolean( FlatSystemProperties.USE_JETBRAINS_CUSTOM_DECORATIONS, true ) )

flatlaf-core/src/main/java/com/formdev/flatlaf/util/AnimatedIcon.java

@@ -0,0 +1,249 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import java.awt.Component;
+import java.awt.Graphics;
+import javax.swing.Icon;
+import javax.swing.JComponent;
+import com.formdev.flatlaf.util.Animator.Interpolator;
+
+/**
+ * Icon that automatically animates painting on component value changes.
+ * <p>
+ * {@link #getValue(Component)} returns the value of the component.
+ * If the value changes, then {@link #paintIconAnimated(Component, Graphics, int, int, float)}
+ * is invoked multiple times with animated value (from old value to new value).
+ * <p>
+ * Example for an animated icon:
+ * <pre>
+ * private class AnimatedMinimalTestIcon
+ *     implements AnimatedIcon
+ * {
+ *     &#64;Override public int getIconWidth() { return 100; }
+ *     &#64;Override public int getIconHeight() { return 20; }
+ *
+ *     &#64;Override
+ *     public void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue ) {
+ *         int w = getIconWidth();
+ *         int h = getIconHeight();
+ *
+ *         g.setColor( Color.red );
+ *         g.drawRect( x, y, w - 1, h - 1 );
+ *         g.fillRect( x, y, Math.round( w * animatedValue ), h );
+ *     }
+ *
+ *     &#64;Override
+ *     public float getValue( Component c ) {
+ *         return ((AbstractButton)c).isSelected() ? 1 : 0;
+ *     }
+ * }
+ *
+ * // sample usage
+ * JCheckBox checkBox = new JCheckBox( "test" );
+ * checkBox.setIcon( new AnimatedMinimalTestIcon() );
+ * </pre>
+ *
+ * Animation works only if the component passed to {@link #paintIcon(Component, Graphics, int, int)}
+ * is a instance of {@link JComponent}.
+ * A client property is set on the component to store the animation state.
+ *
+ * @author Karl Tauber
+ */
+public interface AnimatedIcon
+	extends Icon
+{
+	@Override
+	public default void paintIcon( Component c, Graphics g, int x, int y ) {
+		AnimationSupport.paintIcon( this, c, g, x, y );
+	}
+
+	/**
+	 * Paints the icon for the given animated value.
+	 *
+	 * @param c the component that this icon belongs to
+	 * @param g the graphics context
+	 * @param x the x coordinate of the icon
+	 * @param y the y coordinate of the icon
+	 * @param animatedValue the animated value, which is either equal to what {@link #getValue(Component)}
+	 *     returned, or somewhere between the previous value and the latest value
+	 *     that {@link #getValue(Component)} returned
+	 */
+	void paintIconAnimated( Component c, Graphics g, int x, int y, float animatedValue );
+
+	/**
+	 * Gets the value of the component.
+	 * <p>
+	 * This can be any value and depends on the component.
+	 * If the value changes, then this class animates from the old value to the new one.
+	 * <p>
+	 * For a toggle button this could be {@code 0} for off and {@code 1} for on.
+	 */
+	float getValue( Component c );
+
+	/**
+	 * Returns whether animation is enabled for this icon (default is {@code true}).
+	 */
+	default boolean isAnimationEnabled() {
+		return true;
+	}
+
+	/**
+	 * Returns the duration of the animation in milliseconds (default is 150).
+	 */
+	default int getAnimationDuration() {
+		return 150;
+	}
+
+	/**
+	 * Returns the resolution of the animation in milliseconds (default is 10).
+	 * Resolution is the amount of time between timing events.
+	 */
+	default int getAnimationResolution() {
+		return 10;
+	}
+
+	/**
+	 * Returns the interpolator for the animation.
+	 * Default is {@link CubicBezierEasing#STANDARD_EASING}.
+	 */
+	default Interpolator getAnimationInterpolator() {
+		return CubicBezierEasing.STANDARD_EASING;
+	}
+
+	/**
+	 * Returns the client property key used to store the animation support.
+	 */
+	default Object getClientPropertyKey() {
+		return getClass();
+	}
+
+	//---- class AnimationSupport ---------------------------------------------
+
+	/**
+	 * Animation support class that stores the animation state and implements the animation.
+	 */
+	class AnimationSupport
+	{
+		private float startValue;
+		private float targetValue;
+		private float animatedValue;
+		private float fraction;
+
+		private Animator animator;
+
+		// last x,y coordinates of the icon needed to repaint while animating
+		private int x;
+		private int y;
+
+		public static void paintIcon( AnimatedIcon icon, Component c, Graphics g, int x, int y ) {
+			if( !isAnimationEnabled( icon, c ) ) {
+				// paint without animation if animation is disabled or
+				// component is not a JComponent and therefore does not support
+				// client properties, which are required to keep animation state
+				paintIconImpl( icon, c, g, x, y, null );
+				return;
+			}
+
+			JComponent jc = (JComponent) c;
+			Object key = icon.getClientPropertyKey();
+			AnimationSupport as = (AnimationSupport) jc.getClientProperty( key );
+			if( as == null ) {
+				// painted first time --> do not animate, but remember current component value
+				as = new AnimationSupport();
+				as.startValue = as.targetValue = as.animatedValue = icon.getValue( c );
+				as.x = x;
+				as.y = y;
+				jc.putClientProperty( key, as );
+			} else {
+				// get component value
+				float value = icon.getValue( c );
+
+				if( value != as.targetValue ) {
+					// value changed --> (re)start animation
+
+					if( as.animator == null ) {
+						// create animator
+						AnimationSupport as2 = as;
+						as.animator = new Animator( icon.getAnimationDuration(), fraction -> {
+							// check whether component was removed while animation is running
+							if( !c.isDisplayable() ) {
+								as2.animator.stop();
+								return;
+							}
+
+							// compute animated value
+							as2.animatedValue = as2.startValue + ((as2.targetValue - as2.startValue) * fraction);
+							as2.fraction = fraction;
+
+							// repaint icon
+							c.repaint( as2.x, as2.y, icon.getIconWidth(), icon.getIconHeight() );
+						}, () -> {
+							as2.startValue = as2.animatedValue = as2.targetValue;
+							as2.animator = null;
+						} );
+					}
+
+					if( as.animator.isRunning() ) {
+						// if animation is still running, restart it from the current
+						// animated value to the new target value with reduced duration
+						as.animator.cancel();
+						int duration2 = (int) (icon.getAnimationDuration() * as.fraction);
+						if( duration2 > 0 )
+							as.animator.setDuration( duration2 );
+						as.startValue = as.animatedValue;
+					} else {
+						// new animation
+						as.animator.setDuration( icon.getAnimationDuration() );
+						as.animator.setResolution( icon.getAnimationResolution() );
+						as.animator.setInterpolator( icon.getAnimationInterpolator() );
+
+						as.animatedValue = as.startValue;
+					}
+
+					as.targetValue = value;
+					as.animator.start();
+				}
+
+				as.x = x;
+				as.y = y;
+			}
+
+			paintIconImpl( icon, c, g, x, y, as );
+		}
+
+		private static void paintIconImpl( AnimatedIcon icon, Component c, Graphics g, int x, int y, AnimationSupport as ) {
+			float value = (as != null) ? as.animatedValue : icon.getValue( c );
+			icon.paintIconAnimated( c, g, x, y, value );
+		}
+
+		private static boolean isAnimationEnabled( AnimatedIcon icon, Component c ) {
+			return Animator.useAnimation() && icon.isAnimationEnabled() && c instanceof JComponent;
+		}
+
+		public static void saveIconLocation( AnimatedIcon icon, Component c, int x, int y ) {
+			if( !isAnimationEnabled( icon, c ) )
+				return;
+
+			AnimationSupport as = (AnimationSupport) ((JComponent)c).getClientProperty( icon.getClientPropertyKey() );
+			if( as != null ) {
+				as.x = x;
+				as.y = y;
+			}
+		}
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/Animator.java

@@ -0,0 +1,340 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import java.util.ArrayList;
+import javax.swing.Timer;
+import com.formdev.flatlaf.FlatSystemProperties;
+
+/**
+ * Simple animator based on ideas and concepts from "Filthy Rich Clients" book
+ * and "Timing Framework" library.
+ *
+ * @author Karl Tauber
+ */
+public class Animator
+{
+	private int duration;
+	private int resolution = 10;
+	private Interpolator interpolator;
+	private final ArrayList<TimingTarget> targets = new ArrayList<>();
+	private final Runnable endRunnable;
+
+	private boolean running;
+	private boolean hasBegun;
+	private boolean timeToStop;
+	private long startTime;
+	private Timer timer;
+
+	/**
+	 * Checks whether animations are enabled (the default) or disabled via
+	 * system property {@code flatlaf.animation} set to {@code false}.
+	 * This allows disabling all animations at command line with {@code -Dflatlaf.animation=false}.
+	 */
+	public static boolean useAnimation() {
+		return FlatSystemProperties.getBoolean( FlatSystemProperties.ANIMATION, true );
+	}
+
+	/**
+	 * Creates an animation that runs duration milliseconds.
+	 * Use {@link #addTarget(TimingTarget)} to receive timing events
+	 * and {@link #start()} to start the animation.
+	 *
+	 * @param duration the duration of the animation in milliseconds
+	 */
+	public Animator( int duration ) {
+		this( duration, null, null );
+	}
+
+	/**
+	 * Creates an animation that runs duration milliseconds.
+	 * Use {@link #start()} to start the animation.
+	 *
+	 * @param duration the duration of the animation in milliseconds
+	 * @param target the target that receives timing events
+	 */
+	public Animator( int duration, TimingTarget target ) {
+		this( duration, target, null );
+	}
+
+	/**
+	 * Creates an animation that runs duration milliseconds.
+	 * Use {@link #start()} to start the animation.
+	 *
+	 * @param duration the duration of the animation in milliseconds
+	 * @param target the target that receives timing events
+	 * @param endRunnable a runnable invoked when the animation ends; or {@code null}
+	 */
+	public Animator( int duration, TimingTarget target, Runnable endRunnable ) {
+		setDuration( duration );
+		addTarget( target );
+		this.endRunnable = endRunnable;
+	}
+
+	/**
+	 * Returns the duration of the animation in milliseconds.
+	 */
+	public int getDuration() {
+		return duration;
+	}
+
+	/**
+	 * Sets the duration of the animation in milliseconds.
+	 *
+	 * @throws IllegalStateException if animation is running
+	 * @throws IllegalArgumentException if duration is &lt;= zero
+	 */
+	public void setDuration( int duration ) {
+		throwExceptionIfRunning();
+		if( duration <= 0 )
+			throw new IllegalArgumentException();
+		this.duration = duration;
+	}
+
+	/**
+	 * Returns the resolution of the animation in milliseconds (default is 10).
+	 * Resolution is the amount of time between timing events.
+	 */
+	public int getResolution() {
+		return resolution;
+	}
+
+	/**
+	 * Sets the resolution of the animation in milliseconds.
+	 *
+	 * @param resolution the resolution of the animation in milliseconds
+	 * @throws IllegalStateException if animation is running
+	 * @throws IllegalArgumentException if resolution is &lt;= zero
+	 */
+	public void setResolution( int resolution ) {
+		throwExceptionIfRunning();
+		if( resolution <= 0 )
+			throw new IllegalArgumentException();
+		this.resolution = resolution;
+	}
+
+	/**
+	 * Returns the interpolator for the animation.
+	 * Default is {@code null}, which means linear.
+	 */
+	public Interpolator getInterpolator() {
+		return interpolator;
+	}
+
+	/**
+	 * Sets the interpolator for the animation.
+	 *
+	 * @throws IllegalStateException if animation is running
+	 */
+	public void setInterpolator( Interpolator interpolator ) {
+		throwExceptionIfRunning();
+		this.interpolator = interpolator;
+	}
+
+	/**
+	 * Adds a target to the animation that receives timing events.
+	 *
+	 * @param target the target that receives timing events
+	 */
+	public void addTarget( TimingTarget target ) {
+		if( target == null )
+			return;
+
+		synchronized( targets ) {
+			if( !targets.contains( target ) )
+				targets.add( target );
+		}
+	}
+
+	/**
+	 * Removes a target from the animation.
+	 *
+	 * @param target the target that should be removed
+	 */
+	public void removeTarget( TimingTarget target ) {
+		synchronized( targets ) {
+			targets.remove( target );
+		}
+	}
+
+	/**
+	 * Starts the animation.
+	 *
+	 * @throws IllegalStateException if animation is running
+	 */
+	public void start() {
+		throwExceptionIfRunning();
+
+		running = true;
+		hasBegun = false;
+		timeToStop = false;
+		startTime = System.nanoTime() / 1000000;
+
+		if( timer == null ) {
+			timer = new Timer( resolution, e -> {
+				if( !hasBegun ) {
+					begin();
+					hasBegun = true;
+				}
+
+				timingEvent( getTimingFraction() );
+			} );
+		} else
+			timer.setDelay( resolution );
+		timer.setInitialDelay( 0 );
+		timer.start();
+	}
+
+	/**
+	 * Stops the animation before it normally ends.
+	 * Invokes {@link TimingTarget#end()} on timing targets.
+	 */
+	public void stop() {
+		stop( false );
+	}
+
+	/**
+	 * Cancels the animation before it normally ends.
+	 * Does not invoke {@link TimingTarget#end()} on timing targets.
+	 */
+	public void cancel() {
+		stop( true );
+	}
+
+	private void stop( boolean cancel ) {
+		if( !running )
+			return;
+
+		if( timer != null )
+			timer.stop();
+
+		if( !cancel )
+			end();
+
+		running = false;
+		timeToStop = false;
+	}
+
+	/**
+	 * Restarts the animation.
+	 * Invokes {@link #cancel()} and {@link #start()}.
+	 */
+	public void restart() {
+		cancel();
+		start();
+	}
+
+	/**
+	 * Returns whether this animation is running.
+	 */
+	public boolean isRunning() {
+		return running;
+	}
+
+	private float getTimingFraction() {
+		long currentTime = System.nanoTime() / 1000000;
+		long elapsedTime = currentTime - startTime;
+		timeToStop = (elapsedTime >= duration);
+
+		float fraction = clampFraction( (float) elapsedTime / duration );
+		if( interpolator != null )
+			fraction = clampFraction( interpolator.interpolate( fraction ) );
+		return fraction;
+	}
+
+	private float clampFraction( float fraction ) {
+		if( fraction < 0 )
+			return 0;
+		if( fraction > 1 )
+			return 1;
+		return fraction;
+	}
+
+	private void timingEvent( float fraction ) {
+		synchronized( targets ) {
+			for( TimingTarget target : targets )
+				target.timingEvent( fraction );
+		}
+
+		if( timeToStop )
+			stop();
+	}
+
+	private void begin() {
+		synchronized( targets ) {
+			for( TimingTarget target : targets )
+				target.begin();
+		}
+	}
+
+	private void end() {
+		synchronized( targets ) {
+			for( TimingTarget target : targets )
+				target.end();
+		}
+
+		if( endRunnable != null )
+			endRunnable.run();
+	}
+
+	private void throwExceptionIfRunning() {
+		if( isRunning() )
+			throw new IllegalStateException();
+	}
+
+	//---- interface TimingTarget ---------------------------------------------
+
+	/**
+	 * Animation callbacks.
+	 */
+	@FunctionalInterface
+	public interface TimingTarget {
+		/**
+		 * Invoked multiple times while animation is running.
+		 *
+		 * @param fraction the percent (0 to 1) elapsed of the current animation cycle
+		 */
+		void timingEvent( float fraction );
+
+		/**
+		 * Invoked when the animation begins.
+		 */
+		default void begin() {}
+
+		/**
+		 * Invoked when the animation ends.
+		 */
+		default void end() {}
+	}
+
+	//---- interface Interpolator ---------------------------------------------
+
+	/**
+	 * Interpolator used by animation to change timing fraction. E.g. for easing.
+	 */
+	@FunctionalInterface
+	public interface Interpolator {
+		/**
+		 * Interpolate the given fraction and returns a new fraction.
+		 * Both fractions are in range [0, 1].
+		 *
+		 * @param fraction the percent (0 to 1) elapsed of the current animation cycle
+		 * @return new fraction in range [0, 1]
+		 */
+		float interpolate( float fraction );
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java

@@ -28,11 +28,12 @@ public class ColorFunctions
 	public static Color applyFunctions( Color color, ColorFunction... functions ) {
 		float[] hsl = HSLColor.fromRGB( color );
 		float alpha = color.getAlpha() / 255f;
+		float[] hsla = { hsl[0], hsl[1], hsl[2], alpha * 100 };
 
 		for( ColorFunction function : functions )
-			function.apply( hsl );
+			function.apply( hsla );
 
-		return HSLColor.toRGB( hsl, alpha );
+		return HSLColor.toRGB( hsla[0], hsla[1], hsla[2], hsla[3] / 100 );
 	}
 
 	public static float clamp( float value ) {
@@ -43,16 +44,48 @@ public class ColorFunctions
 				: value);
 	}
 
+	/**
+	 * Returns a color that is a mixture of two colors.
+	 *
+	 * @param color1 first color
+	 * @param color2 second color
+	 * @param weight the weight (in range 0-1) to mix the two colors.
+	 *               Larger weight uses more of first color, smaller weight more of second color.
+	 * @return mixture of colors
+	 */
+	public static Color mix( Color color1, Color color2, float weight ) {
+		if( weight >= 1 )
+			return color1;
+		if( weight <= 0 )
+			return color2;
+
+		int r1 = color1.getRed();
+		int g1 = color1.getGreen();
+		int b1 = color1.getBlue();
+		int a1 = color1.getAlpha();
+
+		int r2 = color2.getRed();
+		int g2 = color2.getGreen();
+		int b2 = color2.getBlue();
+		int a2 = color2.getAlpha();
+
+		return new Color(
+			Math.round( r2 + ((r1 - r2) * weight) ),
+			Math.round( g2 + ((g1 - g2) * weight) ),
+			Math.round( b2 + ((b1 - b2) * weight) ),
+			Math.round( a2 + ((a1 - a2) * weight) ) );
+	}
+
 	//---- interface ColorFunction --------------------------------------------
 
 	public interface ColorFunction {
-		void apply( float[] hsl );
+		void apply( float[] hsla );
 	}
 
 	//---- class HSLIncreaseDecrease ------------------------------------------
 
 	/**
-	 * Increase or decrease hue, saturation or luminance of a color in the HSL color space
+	 * Increase or decrease hue, saturation, luminance or alpha of a color in the HSL color space
 	 * by an absolute or relative amount.
 	 */
 	public static class HSLIncreaseDecrease
@@ -75,18 +108,45 @@ public class ColorFunctions
 		}
 
 		@Override
-		public void apply( float[] hsl ) {
+		public void apply( float[] hsla ) {
 			float amount2 = increase ? amount : -amount;
-			amount2 = autoInverse && shouldInverse( hsl ) ? -amount2 : amount2;
-			hsl[hslIndex] = clamp( relative
-				? (hsl[hslIndex] * ((100 + amount2) / 100))
-				: (hsl[hslIndex] + amount2) );
+
+			if( hslIndex == 0 ) {
+				// hue is range 0-360
+				hsla[0] = (hsla[0] + amount2) % 360;
+				return;
+			}
+
+			amount2 = autoInverse && shouldInverse( hsla ) ? -amount2 : amount2;
+			hsla[hslIndex] = clamp( relative
+				? (hsla[hslIndex] * ((100 + amount2) / 100))
+				: (hsla[hslIndex] + amount2) );
 		}
 
-		protected boolean shouldInverse( float[] hsl ) {
+		protected boolean shouldInverse( float[] hsla ) {
 			return increase
-				? hsl[hslIndex] >= 50
-				: hsl[hslIndex] < 50;
+				? hsla[hslIndex] >= 50
+				: hsla[hslIndex] < 50;
+		}
+	}
+
+	//---- class HSLIncreaseDecrease ------------------------------------------
+
+	/**
+	 * Set the alpha of a color.
+	 */
+	public static class Fade
+		implements ColorFunction
+	{
+		public final float amount;
+
+		public Fade( float amount ) {
+			this.amount = amount;
+		}
+
+		@Override
+		public void apply( float[] hsla ) {
+			hsla[3] = clamp( amount );
 		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/util/CubicBezierEasing.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+/**
+ * An interpolator for {@link Animator} that uses a cubic bezier curve.
+ *
+ * @author Karl Tauber
+ */
+public class CubicBezierEasing
+	implements Animator.Interpolator
+{
+	/**
+	 * Standard easing as specified in Material design (0.4, 0, 0.2, 1).
+	 *
+	 * @see <a href="https://material.io/design/motion/speed.html#easing">https://material.io/design/motion/speed.html#easing</a>
+	 */
+	public static final CubicBezierEasing STANDARD_EASING = new CubicBezierEasing( 0.4f, 0f, 0.2f, 1f );
+
+	// common cubic-bezier easing functions (same as in CSS)
+	// https://developer.mozilla.org/en-US/docs/Web/CSS/easing-function
+	public static final CubicBezierEasing EASE = new CubicBezierEasing( 0.25f, 0.1f, 0.25f, 1f );
+	public static final CubicBezierEasing EASE_IN = new CubicBezierEasing( 0.42f, 0f, 1f, 1f );
+	public static final CubicBezierEasing EASE_IN_OUT = new CubicBezierEasing( 0.42f, 0f, 0.58f, 1f );
+	public static final CubicBezierEasing EASE_OUT = new CubicBezierEasing( 0f, 0f, 0.58f, 1f );
+
+	private final float x1;
+	private final float y1;
+	private final float x2;
+	private final float y2;
+
+	/**
+	 * Creates a cubic bezier easing interpolator with the given control points.
+	 * The start point of the cubic bezier curve is always 0,0 and the end point 1,1.
+	 *
+	 * @param x1 the x coordinate of the first control point in range [0, 1]
+	 * @param y1 the y coordinate of the first control point in range [0, 1]
+	 * @param x2 the x coordinate of the second control point in range [0, 1]
+	 * @param y2 the y coordinate of the second control point in range [0, 1]
+	 */
+	public CubicBezierEasing( float x1, float y1, float x2, float y2 ) {
+		if( x1 < 0 || x1 > 1 || y1 < 0 || y1 > 1 ||
+			x2 < 0 || x2 > 1 || y2 < 0 || y2 > 1 )
+		  throw new IllegalArgumentException( "control points must be in range [0, 1]");
+
+		this.x1 = x1;
+		this.y1 = y1;
+		this.x2 = x2;
+		this.y2 = y2;
+	}
+
+	@Override
+	public float interpolate( float fraction ) {
+		if( fraction <= 0 || fraction >= 1 )
+			return fraction;
+
+		// use binary search
+		float low = 0;
+		float high = 1;
+		while( true ) {
+			float mid = (low + high) / 2;
+			float estimate = cubicBezier( mid, x1, x2 );
+			if( Math.abs( fraction - estimate ) < 0.0005f )
+				return cubicBezier( mid, y1, y2 );
+			if( estimate < fraction )
+				low = mid;
+			else
+				high = mid;
+		}
+	}
+
+	/**
+	 * Computes the x or y point on a cubic bezier curve for a given t value.
+	 *
+	 * https://en.wikipedia.org/wiki/B%C3%A9zier_curve#Cubic_B%C3%A9zier_curves
+	 *
+	 * The general cubic bezier formula is:
+	 *   x = b0*x0 + b1*x1 + b2*x2 + b3*x3
+	 *   y = b0*y0 + b1*y1 + b2*y2 + b3*y3
+	 *
+	 * where:
+	 *   b0 = (1-t)^3
+	 *   b1 = 3 * t * (1-t)^2
+	 *   b2 = 3 * t^2 * (1-t)
+	 *   b3 = t^3
+	 *
+	 *  x0,y0 is always 0,0 and x3,y3 is 1,1, so we can simplify to:
+	 *   x = b1*x1 + b2*x2 + b3
+	 *   y = b1*x1 + b2*x2 + b3
+	 */
+	private static float cubicBezier( float t, float xy1, float xy2 ) {
+		float invT = (1 - t);
+		float b1 = 3 * t * (invT * invT);
+		float b2 = 3 * (t * t) * invT;
+		float b3 = t * t * t;
+		return (b1 * xy1) + (b2 * xy2) + b3;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/HiDPIUtils.java

@@ -117,10 +117,10 @@ public class HiDPIUtils
 	 * This methods computes a correction value for the Y position.
 	 */
 	public static float computeTextYCorrection( Graphics2D g ) {
-		if( !useTextYCorrection() || !SystemInfo.IS_WINDOWS )
+		if( !useTextYCorrection() || !SystemInfo.isWindows )
 			return 0;
 
-		if( !SystemInfo.IS_JAVA_9_OR_LATER )
+		if( !SystemInfo.isJava_9_orLater )
 			return UIScale.getUserScaleFactor() > 1 ? -UIScale.scale( 0.625f ) : 0;
 
 		AffineTransform t = g.getTransform();

flatlaf-core/src/main/java/com/formdev/flatlaf/util/JavaCompatibility.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.util;
 
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.lang.reflect.InvocationTargetException;
@@ -27,7 +28,7 @@ import com.formdev.flatlaf.FlatLaf;
 
 /**
  * Provides Java version compatibility methods.
- *
+ * <p>
  * WARNING: This is private API and may change.
  *
  * @author Karl Tauber
@@ -35,10 +36,12 @@ import com.formdev.flatlaf.FlatLaf;
 public class JavaCompatibility
 {
 	private static Method drawStringUnderlineCharAtMethod;
+	private static Method getClippedStringMethod;
 
 	/**
 	 * Java 8: sun.swing.SwingUtilities2.drawStringUnderlineCharAt( JComponent c,
 	 *				Graphics g, String text, int underlinedIndex, int x, int y )
+	 * <br>
 	 * Java 9: javax.swing.plaf.basic.BasicGraphicsUtils.drawStringUnderlineCharAt( JComponent c,
 	 *				Graphics2D g, String string, int underlinedIndex, float x, float y )
 	 */
@@ -48,10 +51,10 @@ public class JavaCompatibility
 		synchronized( JavaCompatibility.class ) {
 			if( drawStringUnderlineCharAtMethod == null ) {
 				try {
-					Class<?> cls = Class.forName( SystemInfo.IS_JAVA_9_OR_LATER
+					Class<?> cls = Class.forName( SystemInfo.isJava_9_orLater
 						? "javax.swing.plaf.basic.BasicGraphicsUtils"
 						: "sun.swing.SwingUtilities2" );
-					drawStringUnderlineCharAtMethod = cls.getMethod( "drawStringUnderlineCharAt", SystemInfo.IS_JAVA_9_OR_LATER
+					drawStringUnderlineCharAtMethod = cls.getMethod( "drawStringUnderlineCharAt", SystemInfo.isJava_9_orLater
 						? new Class[] { JComponent.class, Graphics2D.class, String.class, int.class, float.class, float.class }
 						: new Class[] { JComponent.class, Graphics.class, String.class, int.class, int.class, int.class } );
 				} catch( Exception ex ) {
@@ -62,7 +65,7 @@ public class JavaCompatibility
 		}
 
 		try {
-			if( SystemInfo.IS_JAVA_9_OR_LATER )
+			if( SystemInfo.isJava_9_orLater )
 				drawStringUnderlineCharAtMethod.invoke( null, c, g, text, underlinedIndex, (float) x, (float) y );
 			else
 				drawStringUnderlineCharAtMethod.invoke( null, c, g, text, underlinedIndex, x, y );
@@ -71,4 +74,37 @@ public class JavaCompatibility
 			throw new RuntimeException( ex );
 		}
 	}
+
+	/**
+	 * Java 8: sun.swing.SwingUtilities2.clipStringIfNecessary( JComponent c,
+	 *				FontMetrics fm, String string, int availTextWidth )
+	 * <br>
+	 * Java 9: javax.swing.plaf.basic.BasicGraphicsUtils.getClippedString( JComponent c,
+	 *				FontMetrics fm, String string, int availTextWidth )
+	 */
+	public static String getClippedString( JComponent c, FontMetrics fm, String string, int availTextWidth ) {
+		synchronized( JavaCompatibility.class ) {
+			if( getClippedStringMethod == null ) {
+				try {
+					Class<?> cls = Class.forName( SystemInfo.isJava_9_orLater
+						? "javax.swing.plaf.basic.BasicGraphicsUtils"
+						: "sun.swing.SwingUtilities2" );
+					getClippedStringMethod = cls.getMethod( SystemInfo.isJava_9_orLater
+							? "getClippedString"
+							: "clipStringIfNecessary",
+						new Class[] { JComponent.class, FontMetrics.class, String.class, int.class } );
+				} catch( Exception ex ) {
+					Logger.getLogger( FlatLaf.class.getName() ).log( Level.SEVERE, null, ex );
+					throw new RuntimeException( ex );
+				}
+			}
+		}
+
+		try {
+			return (String) getClippedStringMethod.invoke( null, c, fm, string, availTextWidth );
+		} catch( IllegalAccessException | IllegalArgumentException | InvocationTargetException ex ) {
+			Logger.getLogger( FlatLaf.class.getName() ).log( Level.SEVERE, null, ex );
+			throw new RuntimeException( ex );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/util/MultiResolutionImageSupport.java

@@ -16,11 +16,20 @@
 
 package com.formdev.flatlaf.util;
 
+import java.awt.Dimension;
 import java.awt.Image;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Function;
 
+//
+// NOTE:
+//     This implementation is for Java 8 only.
+//     There is also a variant for Java 9 and later.
+// 
+//     Make sure that the API is in sync.
+//
+
 /**
  * Support for multi-resolution images available since Java 9.
  *
@@ -28,26 +37,86 @@ import java.util.function.Function;
  */
 public class MultiResolutionImageSupport
 {
+	/**
+	 * Checks whether multi-resolution image support is available.
+	 * 
+	 * @return {@code true} when running on Java 9 or later; {@code false} on Java 8
+	 */
 	public static boolean isAvailable() {
 		return false;
 	}
 
+	/**
+	 * Checks whether the given image is a multi-resolution image that implements
+	 * the interface {@code java.awt.image.MultiResolutionImage}.
+	 */
 	public static boolean isMultiResolutionImage( Image image ) {
 		return false;
 	}
 
+	/**
+	 * Creates a multi-resolution image from the given resolution variants.
+	 * 
+	 * @param baseImageIndex index of the base image in the resolution variants array
+	 * @param resolutionVariants image resolution variants (sorted by size; smallest first)
+	 * @return a multi-resolution image on Java 9 or later; the base image on Java 8
+	 */
 	public static Image create( int baseImageIndex, Image... resolutionVariants ) {
 		return resolutionVariants[baseImageIndex];
 	}
 
+	/**
+	 * Creates a multi-resolution image for the given dimensions.
+	 * Initially the image does not contain any image data.
+	 * The real images are created (and cached) on demand by invoking the given producer function.
+	 * <p>
+	 * The given dimensions array is only used for {@link #getResolutionVariants(Image)}.
+	 * The producer function may be invoked with any dimension (that is not contained in 
+	 * dimensions array) and is expected to produce a image for the passed in dimension.
+	 * 
+	 * @param baseImageIndex index of the base image in the dimensions array
+	 * @param dimensions dimensions of resolution variants (sorted by size; smallest first)
+	 * @param producer producer function that creates a real image for the requested size
+	 * @return a multi-resolution image on Java 9 or later; the base image on Java 8
+	 */
+	public static Image create( int baseImageIndex, Dimension[] dimensions, Function<Dimension, Image> producer ) {
+		return producer.apply( dimensions[baseImageIndex] );
+	}
+
+	/**
+	 * Creates a multi-resolution image that maps images from another multi-resolution image
+	 * using the given mapper function.
+	 * <p>
+	 * Can be used to apply filter to multi-resolution images on demand.
+	 * E.g. passed in image is for "enabled" state and mapper function creates images
+	 * for "disabled" state.  
+	 * 
+	 * @param image a multi-resolution image that is mapped using the given mapper function
+	 * @param mapper mapper function that maps a single resolution variant to a new image (e.g. applying an filter)
+	 * @return a multi-resolution image on Java 9 or later; a mapped image on Java 8
+	 */
 	public static Image map( Image image, Function<Image, Image> mapper ) {
 		return mapper.apply( image );
 	}
 
+	/**
+	 * Get the image variant that best matches the given width and height.
+	 * <p>
+	 * If the given image is a multi-resolution image then invokes
+	 * {@code java.awt.image.MultiResolutionImage.getResolutionVariant(destImageWidth, destImageHeight)}.
+	 * Otherwise returns the given image.
+	 */
 	public static Image getResolutionVariant( Image image, int destImageWidth, int destImageHeight ) {
 		return image;
 	}
 
+	/**
+	 * Get a list of all resolution variants.
+	 * <p>
+	 * If the given image is a multi-resolution image then invokes
+	 * {@code java.awt.image.MultiResolutionImage.getResolutionVariants()}.
+	 * Otherwise returns a list containing only the given image.
+	 */
 	public static List<Image> getResolutionVariants( Image image ) {
 		return Collections.singletonList( image );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/ScaledEmptyBorder.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.util;
+
+import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.Component;
+import java.awt.Insets;
+import javax.swing.border.EmptyBorder;
+
+/**
+ * Empty border that scales insets.
+ *
+ * @author Karl Tauber
+ */
+public class ScaledEmptyBorder
+	extends EmptyBorder
+{
+	public ScaledEmptyBorder( int top, int left, int bottom, int right ) {
+		super( top, left, bottom, right );
+	}
+
+	public ScaledEmptyBorder( Insets insets ) {
+		super( insets );
+	}
+
+	@Override
+	public Insets getBorderInsets() {
+		return new Insets( scale( top ), scale( left ), scale( bottom ), scale( right ) );
+	}
+
+	@Override
+	public Insets getBorderInsets( Component c, Insets insets ) {
+		insets.left = scale( left );
+		insets.top = scale( top );
+		insets.right = scale( right );
+		insets.bottom = scale( bottom );
+		return insets;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/StringUtils.java

@@ -26,6 +26,13 @@ import java.util.List;
  */
 public class StringUtils
 {
+	/**
+	 * Returns {@code true} if given string is {@code null} or length is zero.
+	 */
+	public static boolean isEmpty( String string ) {
+		return string == null || string.isEmpty();
+	}
+
 	public static String removeLeading( String string, String leading ) {
 		return string.startsWith( leading )
 			? string.substring( leading.length() )

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemInfo.java

@@ -27,55 +27,57 @@ import java.util.StringTokenizer;
 public class SystemInfo
 {
 	// platforms
-	public static final boolean IS_WINDOWS;
-	public static final boolean IS_MAC;
-	public static final boolean IS_LINUX;
+	public static final boolean isWindows;
+	public static final boolean isMacOS;
+	public static final boolean isLinux;
 
 	// OS versions
-	public static final boolean IS_WINDOWS_10_OR_LATER;
-	public static final boolean IS_MAC_OS_10_11_EL_CAPITAN_OR_LATER;
-	public static final boolean IS_MAC_OS_10_14_MOJAVE;
-	public static final boolean IS_MAC_OS_10_15_CATALINA_OR_LATER;
+	public static final long osVersion;
+	public static final boolean isWindows_10_orLater;
+	public static final boolean isMacOS_10_11_ElCapitan_orLater;
+	public static final boolean isMacOS_10_14_Mojave_orLater;
+	public static final boolean isMacOS_10_15_Catalina_orLater;
 
 	// Java versions
-	public static final boolean IS_JAVA_9_OR_LATER;
-	public static final boolean IS_JAVA_11_OR_LATER;
-	public static final boolean IS_JAVA_15_OR_LATER;
+	public static final long javaVersion;
+	public static final boolean isJava_9_orLater;
+	public static final boolean isJava_11_orLater;
+	public static final boolean isJava_15_orLater;
 
 	// Java VMs
-	public static final boolean IS_JETBRAINS_JVM;
-	public static final boolean IS_JETBRAINS_JVM_11_OR_LATER;
+	public static final boolean isJetBrainsJVM;
+	public static final boolean isJetBrainsJVM_11_orLater;
 
 	// UI toolkits
-	public static final boolean IS_KDE;
+	public static final boolean isKDE;
 
 	static {
 		// platforms
 		String osName = System.getProperty( "os.name" ).toLowerCase( Locale.ENGLISH );
-		IS_WINDOWS = osName.startsWith( "windows" );
-		IS_MAC = osName.startsWith( "mac" );
-		IS_LINUX = osName.startsWith( "linux" );
+		isWindows = osName.startsWith( "windows" );
+		isMacOS = osName.startsWith( "mac" );
+		isLinux = osName.startsWith( "linux" );
 
 		// OS versions
-		long osVersion = scanVersion( System.getProperty( "os.version" ) );
-		IS_WINDOWS_10_OR_LATER = (IS_WINDOWS && osVersion >= toVersion( 10, 0, 0, 0 ));
-		IS_MAC_OS_10_11_EL_CAPITAN_OR_LATER = (IS_MAC && osVersion >= toVersion( 10, 11, 0, 0 ));
-		IS_MAC_OS_10_14_MOJAVE = (IS_MAC && osVersion >= toVersion( 10, 14, 0, 0 ));
-		IS_MAC_OS_10_15_CATALINA_OR_LATER = (IS_MAC && osVersion >= toVersion( 10, 15, 0, 0 ));
+		osVersion = scanVersion( System.getProperty( "os.version" ) );
+		isWindows_10_orLater = (isWindows && osVersion >= toVersion( 10, 0, 0, 0 ));
+		isMacOS_10_11_ElCapitan_orLater = (isMacOS && osVersion >= toVersion( 10, 11, 0, 0 ));
+		isMacOS_10_14_Mojave_orLater = (isMacOS && osVersion >= toVersion( 10, 14, 0, 0 ));
+		isMacOS_10_15_Catalina_orLater = (isMacOS && osVersion >= toVersion( 10, 15, 0, 0 ));
 
 		// Java versions
-		long javaVersion = scanVersion( System.getProperty( "java.version" ) );
-		IS_JAVA_9_OR_LATER = (javaVersion >= toVersion( 9, 0, 0, 0 ));
-		IS_JAVA_11_OR_LATER = (javaVersion >= toVersion( 11, 0, 0, 0 ));
-		IS_JAVA_15_OR_LATER = (javaVersion >= toVersion( 15, 0, 0, 0 ));
+		javaVersion = scanVersion( System.getProperty( "java.version" ) );
+		isJava_9_orLater = (javaVersion >= toVersion( 9, 0, 0, 0 ));
+		isJava_11_orLater = (javaVersion >= toVersion( 11, 0, 0, 0 ));
+		isJava_15_orLater = (javaVersion >= toVersion( 15, 0, 0, 0 ));
 
 		// Java VMs
-		IS_JETBRAINS_JVM = System.getProperty( "java.vm.vendor", "Unknown" )
+		isJetBrainsJVM = System.getProperty( "java.vm.vendor", "Unknown" )
 			.toLowerCase( Locale.ENGLISH ).contains( "jetbrains" );
-		IS_JETBRAINS_JVM_11_OR_LATER = IS_JETBRAINS_JVM && IS_JAVA_11_OR_LATER;
+		isJetBrainsJVM_11_orLater = isJetBrainsJVM && isJava_11_orLater;
 
 		// UI toolkits
-		IS_KDE = (IS_LINUX && System.getenv( "KDE_FULL_SESSION" ) != null);
+		isKDE = (isLinux && System.getenv( "KDE_FULL_SESSION" ) != null);
 	}
 
 	public static long scanVersion( String version ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/util/UIScale.java

@@ -22,6 +22,7 @@ import java.awt.Graphics2D;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsEnvironment;
 import java.awt.Insets;
+import java.awt.Toolkit;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
@@ -90,10 +91,10 @@ public class UIScale
 
 		jreHiDPI = false;
 
-		if( SystemInfo.IS_JAVA_9_OR_LATER ) {
+		if( SystemInfo.isJava_9_orLater ) {
 			// Java 9 and later supports per-monitor scaling
 			jreHiDPI = true;
-		} else if( SystemInfo.IS_JETBRAINS_JVM ) {
+		} else if( SystemInfo.isJetBrainsJVM ) {
 			// IntelliJ IDEA ships its own JetBrains Java 8 JRE that may supports per-monitor scaling
 			// see com.intellij.ui.JreHiDpiUtil.isJreHiDPIEnabled()
 			try {
@@ -112,7 +113,7 @@ public class UIScale
 	}
 
 	public static double getSystemScaleFactor( Graphics2D g ) {
-		return isSystemScalingEnabled() ? g.getDeviceConfiguration().getDefaultTransform().getScaleX() : 1;
+		return isSystemScalingEnabled() ? getSystemScaleFactor( g.getDeviceConfiguration() ) : 1;
 	}
 
 	public static double getSystemScaleFactor( GraphicsConfiguration gc ) {
@@ -162,6 +163,13 @@ public class UIScale
 		if( !isUserScalingEnabled() )
 			return;
 
+		// apply custom scale factor specified in system property "flatlaf.uiScale"
+		float customScaleFactor = getCustomScaleFactor();
+		if( customScaleFactor > 0 ) {
+			setUserScaleFactor( customScaleFactor );
+			return;
+		}
+
 		// use font size to calculate scale factor (instead of DPI)
 		// because even if we are on a HiDPI display it is not sure
 		// that a larger font size is set by the current LaF
@@ -170,33 +178,70 @@ public class UIScale
 		if( font == null )
 			font = UIManager.getFont( "Label.font" );
 
-		setUserScaleFactor( computeScaleFactor( font ) );
+		float newScaleFactor;
+		if( SystemInfo.isWindows ) {
+			// Special handling for Windows to be compatible with OS scaling,
+			// which distinguish between "screen scaling" and "text scaling".
+			//  - Windows "screen scaling" scales everything (text, icon, gaps, etc)
+			//    and may have different scaling factors for each screen.
+			//  - Windows "text scaling" increases only the font size, but on all screens.
+			//
+			// Both can be changed by the user in the Windows 10 Settings:
+			//  - Settings > Display > Scale and layout
+			//  - Settings > Ease of Access > Display > Make text bigger (100% - 225%)
+			if( font instanceof UIResource ) {
+				if( isSystemScalingEnabled() ) {
+					// Do not apply own scaling if the JRE scales using Windows screen scale factor.
+					// If user increases font size in Windows 10 settings, desktop property
+					// "win.messagebox.font" is changed and FlatLaf uses the larger font.
+					newScaleFactor = 1;
+				} else {
+					// If the JRE does not scale (Java 8), the size of the UI font
+					// (usually from desktop property "win.messagebox.font")
+					// combines the Windows screen and text scale factors.
+					// But the font in desktop property "win.defaultGUI.font" is only
+					// scaled with the Windows screen scale factor. So use it to compute
+					// our scale factor that is equal to Windows screen scale factor.
+					Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.defaultGUI.font" );
+					newScaleFactor = computeScaleFactor( (winFont != null) ? winFont : font );
+				}
+			} else {
+				// If font was explicitly set from outside (is not a UIResource)
+				// use it to compute scale factor. This allows applications to
+				// use custom fonts (e.g. that the user can change in UI) and
+				// get scaling if a larger font size is used.
+				// E.g. FlatLaf Demo supports increasing font size in "Font" menu and UI scales.
+				newScaleFactor = computeScaleFactor( font );
+			}
+		} else
+			newScaleFactor = computeScaleFactor( font );
+
+		setUserScaleFactor( newScaleFactor );
 	}
 
 	private static float computeScaleFactor( Font font ) {
 		// default font size
 		float fontSizeDivider = 12f;
 
-		if( SystemInfo.IS_WINDOWS ) {
+		if( SystemInfo.isWindows ) {
 			// Windows LaF uses Tahoma font rather than the actual Windows system font (Segoe UI),
 			// and its size is always ca. 10% smaller than the actual system font size.
 			// Tahoma 11 is used at 100%
 			if( "Tahoma".equals( font.getFamily() ) )
 				fontSizeDivider = 11f;
-		} else if( SystemInfo.IS_MAC ) {
+		} else if( SystemInfo.isMacOS ) {
 			// default font size on macOS is 13
 			fontSizeDivider = 13f;
-		} else if( SystemInfo.IS_LINUX ) {
+		} else if( SystemInfo.isLinux ) {
 			// default font size for Unity and Gnome is 15 and for KDE it is 13
-			fontSizeDivider = SystemInfo.IS_KDE ? 13f : 15f;
+			fontSizeDivider = SystemInfo.isKDE ? 13f : 15f;
 		}
 
 		return font.getSize() / fontSizeDivider;
 	}
 
 	private static boolean isUserScalingEnabled() {
-		// same as in IntelliJ IDEA
-		return FlatSystemProperties.getBoolean( "hidpi", true );
+		return FlatSystemProperties.getBoolean( FlatSystemProperties.UI_SCALE_ENABLED, true );
 	}
 
 	/**
@@ -204,8 +249,10 @@ public class UIScale
 	 * to the given font.
 	 */
 	public static FontUIResource applyCustomScaleFactor( FontUIResource font ) {
-		String uiScale = System.getProperty( FlatSystemProperties.UI_SCALE );
-		float scaleFactor = parseScaleFactor( uiScale );
+		if( !isUserScalingEnabled() )
+			return font;
+
+		float scaleFactor = getCustomScaleFactor();
 		if( scaleFactor <= 0 )
 			return font;
 
@@ -217,6 +264,13 @@ public class UIScale
 		return new FontUIResource( font.deriveFont( (float) newFontSize ) );
 	}
 
+	/**
+	 * Get custom scale factor specified in system property "flatlaf.uiScale".
+	 */
+	private static float getCustomScaleFactor() {
+		return parseScaleFactor( System.getProperty( FlatSystemProperties.UI_SCALE ) );
+	}
+
 	/**
 	 * Similar to sun.java2d.SunGraphicsEnvironment.getScaleFactor(String)
 	 */

flatlaf-core/src/main/java9/com/formdev/flatlaf/util/MultiResolutionImageSupport.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.util;
 
+import java.awt.Dimension;
 import java.awt.Image;
 import java.awt.image.AbstractMultiResolutionImage;
 import java.awt.image.BaseMultiResolutionImage;
@@ -27,6 +28,14 @@ import java.util.List;
 import java.util.function.Function;
 import javax.swing.ImageIcon;
 
+//
+// NOTE:
+//     This implementation is for Java 9 and later.
+//     There is also a variant for Java 8.
+//
+//     Make sure that the API is in sync.
+//
+
 /**
  * Support for multi-resolution images available since Java 9.
  *
@@ -46,6 +55,10 @@ public class MultiResolutionImageSupport
 		return new BaseMultiResolutionImage( baseImageIndex, resolutionVariants );
 	}
 
+	public static Image create( int baseImageIndex, Dimension[] dimensions, Function<Dimension, Image> producer ) {
+		return new ProducerMultiResolutionImage( dimensions, producer );
+	}
+
 	public static Image map( Image image, Function<Image, Image> mapper ) {
 		return image instanceof MultiResolutionImage
 			? new MappedMultiResolutionImage( image, mapper )
@@ -66,6 +79,9 @@ public class MultiResolutionImageSupport
 
 	//---- class MappedMultiResolutionImage -----------------------------------
 
+	/**
+	 * A multi-resolution image implementation that maps images on demand for requested sizes.
+	 */
 	private static class MappedMultiResolutionImage
 		extends AbstractMultiResolutionImage
 	{
@@ -102,8 +118,52 @@ public class MultiResolutionImageSupport
 
 		private Image mapAndCacheImage( Image image ) {
 			return cache.computeIfAbsent( image, img -> {
+				// using ImageIcon here makes sure that the image is loaded
 				return new ImageIcon( mapper.apply( img ) ).getImage();
 			} );
 		}
 	}
+
+	//---- class ProducerMultiResolutionImage ---------------------------------
+
+	/**
+	 * A multi-resolution image implementation that produces images on demand for requested sizes.
+	 */
+	private static class ProducerMultiResolutionImage
+		extends AbstractMultiResolutionImage
+	{
+		private final Dimension[] dimensions;
+		private final Function<Dimension, Image> producer;
+		private final IdentityHashMap<Dimension, Image> cache = new IdentityHashMap<>();
+
+		ProducerMultiResolutionImage( Dimension[] dimensions, Function<Dimension, Image> producer ) {
+			this.dimensions = dimensions;
+			this.producer = producer;
+		}
+
+		@Override
+		public Image getResolutionVariant( double destImageWidth, double destImageHeight ) {
+			return produceAndCacheImage( new Dimension( (int) destImageWidth, (int) destImageHeight ) );
+		}
+
+		@Override
+		public List<Image> getResolutionVariants() {
+			List<Image> mappedVariants = new ArrayList<>();
+			for( Dimension size : dimensions )
+				mappedVariants.add( produceAndCacheImage( size ) );
+			return mappedVariants;
+		}
+
+		@Override
+		protected Image getBaseImage() {
+			return produceAndCacheImage( dimensions[0] );
+		}
+
+		private Image produceAndCacheImage( Dimension size ) {
+			return cache.computeIfAbsent( size, size2 -> {
+				// using ImageIcon here makes sure that the image is loaded
+				return new ImageIcon( producer.apply( size2 ) ).getImage();
+			} );
+		}
+	}
 }

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatDarkLaf.properties

@@ -21,18 +21,19 @@
 #---- variables ----
 
 @background=#3c3f41
-@foreground=#bbbbbb
+@foreground=#bbb
 @selectionBackground=#4B6EAF
 @selectionForeground=@foreground
 @selectionInactiveBackground=#0D293E
 @selectionInactiveForeground=@foreground
-@disabledText=#777777
+@disabledText=#888
 @textComponentBackground=#45494A
 @menuBackground=darken(@background,5%)
 @menuHoverBackground=lighten(@menuBackground,10%,derived)
-@menuCheckBackground=lighten(@menuBackground,10%,derived)
-@menuCheckHoverBackground=lighten(@menuBackground,20%,derived)
-@cellFocusColor=#000000
+@menuCheckBackground=darken(@selectionBackground,10%)
+@menuAcceleratorForeground=darken(@foreground,15%)
+@menuAcceleratorSelectionForeground=@selectionForeground
+@cellFocusColor=#000
 @icon=#adadad
 
 # Drop (use lazy colors for IntelliJ platform themes, which usually do not specify these colors)
@@ -42,24 +43,6 @@
 @dropLineShortColor=lighten(List.selectionBackground,30%,lazy)
 
 
-#---- globals ----
-
-*.background=@background
-*.foreground=@foreground
-*.textBackground=@background
-*.textForeground=@foreground
-*.caretForeground=@foreground
-*.inactiveBackground=@background
-*.inactiveForeground=@foreground
-*.selectionBackground=@selectionBackground
-*.selectionForeground=@selectionForeground
-*.disabledBackground=@background
-*.disabledForeground=@disabledText
-*.disabledText=@disabledText
-*.acceleratorForeground=darken(@foreground,15%)
-*.acceleratorSelectionForeground=@selectionForeground
-
-
 #---- system colors ----
 
 activeCaption=#434E60
@@ -74,6 +57,9 @@ controlDkShadow=lighten($controlShadow,10%)
 Button.background=#4c5052
 Button.hoverBackground=lighten($Button.background,3%,derived)
 Button.pressedBackground=lighten($Button.background,6%,derived)
+Button.selectedBackground=lighten($Button.background,10%,derived)
+Button.selectedForeground=@foreground
+Button.disabledSelectedBackground=lighten($Button.background,3%,derived)
 
 Button.borderColor=#5e6060
 Button.disabledBorderColor=#5e6060
@@ -81,7 +67,7 @@ Button.focusedBorderColor=#466d94
 Button.hoverBorderColor=$Button.focusedBorderColor
 
 Button.default.background=#365880
-Button.default.foreground=#bbbbbb
+Button.default.foreground=#bbb
 Button.default.hoverBackground=lighten($Button.default.background,3%,derived)
 Button.default.pressedBackground=lighten($Button.default.background,6%,derived)
 Button.default.borderColor=#4c708c
@@ -92,6 +78,7 @@ Button.default.boldText=true
 
 Button.toolbar.hoverBackground=lighten($Button.background,1%,derived)
 Button.toolbar.pressedBackground=lighten($Button.background,4%,derived)
+Button.toolbar.selectedBackground=lighten($Button.background,7%,derived)
 
 
 #---- CheckBox ----
@@ -132,12 +119,10 @@ CheckBox.icon[filled].selectedPressedBackground=darken($CheckBox.icon[filled].se
 
 #---- ComboBox ----
 
-ComboBox.background=@textComponentBackground
-ComboBox.buttonBackground=@textComponentBackground
 ComboBox.buttonEditableBackground=#404445
 ComboBox.buttonArrowColor=#9A9DA1
 ComboBox.buttonDisabledArrowColor=#585858
-ComboBox.buttonHoverArrowColor=#bbbbbb
+ComboBox.buttonHoverArrowColor=#bbb
 
 
 #---- Component ----
@@ -187,11 +172,6 @@ InternalFrame.activeDropShadowOpacity=0.5
 InternalFrame.inactiveDropShadowOpacity=0.75
 
 
-#---- List ----
-
-List.background=@textComponentBackground
-
-
 #---- Menu ----
 
 Menu.icon.arrowColor=#A7A7A7
@@ -201,7 +181,6 @@ Menu.icon.disabledArrowColor=#606060
 #---- MenuBar ----
 
 MenuBar.borderColor=#515151
-MenuBar.hoverBackground=@menuHoverBackground
 
 
 #---- MenuItemCheckBox ----
@@ -228,17 +207,12 @@ PopupMenu.borderColor=#5e5e5e
 
 #---- ProgressBar ----
 
-ProgressBar.background=#555555
+ProgressBar.background=#555
 ProgressBar.foreground=#4A88C7
 ProgressBar.selectionForeground=@foreground
 ProgressBar.selectionBackground=@foreground
 
 
-#---- RadioButton ----
-
-RadioButton.icon[filled].centerDiameter=5
-
-
 #---- RootPane ----
 
 RootPane.activeBorderColor=darken(@background,7%,derived)
@@ -263,11 +237,15 @@ Separator.foreground=#515151
 
 #---- Slider ----
 
+Slider.trackValueColor=#4A88C7
 Slider.trackColor=#646464
-Slider.thumbColor=#A6A6A6
-Slider.tickColor=#888888
-Slider.hoverColor=darken($Slider.thumbColor,15%,derived)
-Slider.disabledForeground=#4c5052
+Slider.thumbColor=$Slider.trackValueColor
+Slider.tickColor=#888
+Slider.focusedColor=fade($Component.focusColor,70%,derived)
+Slider.hoverThumbColor=darken($Slider.thumbColor,10%,derived)
+Slider.pressedThumbColor=darken($Slider.thumbColor,15%,derived)
+Slider.disabledTrackColor=#4c5052
+Slider.disabledThumbColor=$Slider.disabledTrackColor
 
 
 #---- SplitPane ----
@@ -278,23 +256,30 @@ SplitPaneDivider.oneTouchHoverArrowColor=#7A7D81
 
 #---- TabbedPane ----
 
-TabbedPane.disabledForeground=@disabledText
 TabbedPane.underlineColor=#4A88C7
 TabbedPane.disabledUnderlineColor=#7a7a7a
-TabbedPane.hoverColor=#2e3133
+TabbedPane.hoverColor=darken($TabbedPane.background,5%,derived noAutoInverse)
 TabbedPane.focusColor=#3d4b5c
-TabbedPane.contentAreaColor=#323232
+TabbedPane.contentAreaColor=#646464
+
+TabbedPane.buttonHoverBackground=darken($TabbedPane.background,5%,derived noAutoInverse)
+TabbedPane.buttonPressedBackground=darken($TabbedPane.background,8%,derived noAutoInverse)
+
+TabbedPane.closeBackground=null
+TabbedPane.closeForeground=@disabledText
+TabbedPane.closeHoverBackground=lighten($TabbedPane.background,5%,derived)
+TabbedPane.closeHoverForeground=@foreground
+TabbedPane.closePressedBackground=lighten($TabbedPane.background,10%,derived)
+TabbedPane.closePressedForeground=$TabbedPane.closeHoverForeground
 
 
 #---- Table ----
 
-Table.background=@textComponentBackground
-Table.gridColor=lighten($Table.background,3%)
+Table.gridColor=lighten($Table.background,5%)
 
 
 #---- TableHeader ----
 
-TableHeader.background=@textComponentBackground
 TableHeader.separatorColor=lighten($TableHeader.background,10%)
 TableHeader.bottomSeparatorColor=$TableHeader.separatorColor
 
@@ -309,7 +294,6 @@ TitlePane.buttonPressedBackground=lighten($TitlePane.background,20%,derived)
 #---- ToggleButton ----
 
 ToggleButton.selectedBackground=lighten($ToggleButton.background,10%,derived)
-ToggleButton.selectedForeground=@foreground
 ToggleButton.disabledSelectedBackground=lighten($ToggleButton.background,3%,derived)
 
 ToggleButton.toolbar.selectedBackground=lighten($ToggleButton.background,7%,derived)
@@ -323,5 +307,4 @@ ToolTip.background=#1e2123
 
 #---- Tree ----
 
-Tree.background=@textComponentBackground
 Tree.hash=#505355

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatIntelliJLaf.properties

@@ -23,7 +23,7 @@
 Button.focusedBackground=null
 
 Button.default.background=#4D8AC9
-Button.default.foreground=#FFFFFF
+Button.default.foreground=#fff
 Button.default.focusedBackground=null
 Button.default.borderColor=#3D75B2
 Button.default.hoverBorderColor=#A9C9F5

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

@@ -67,6 +67,22 @@ ViewportUI=com.formdev.flatlaf.ui.FlatViewportUI
 @menuItemMargin=3,6,3,6
 
 
+#---- globals ----
+
+*.background=@background
+*.foreground=@foreground
+*.caretForeground=@foreground
+*.inactiveBackground=@background
+*.inactiveForeground=@disabledText
+*.selectionBackground=@selectionBackground
+*.selectionForeground=@selectionForeground
+*.disabledBackground=@background
+*.disabledForeground=@disabledText
+*.disabledText=@disabledText
+*.acceleratorForeground=@menuAcceleratorForeground
+*.acceleratorSelectionForeground=@menuAcceleratorSelectionForeground
+
+
 #---- system colors ----
 
 desktop=@textComponentBackground
@@ -135,6 +151,7 @@ Button.rollover=true
 Button.defaultButtonFollowsFocus=false
 [win]Button.defaultButtonFollowsFocus=true
 
+Button.borderWidth=1
 Button.default.borderWidth=1
 
 Button.toolbar.margin=3,3,3,3
@@ -180,9 +197,12 @@ ComboBox.border=com.formdev.flatlaf.ui.FlatRoundBorder
 ComboBox.padding=2,6,2,6
 ComboBox.minimumWidth=72
 ComboBox.editorColumns=0
-ComboBox.maximumRowCount=20
+ComboBox.maximumRowCount=15
 [mac]ComboBox.showPopupOnNavigation=true
+# allowed values: auto, button or none
 ComboBox.buttonStyle=auto
+ComboBox.background=@textComponentBackground
+ComboBox.buttonBackground=@textComponentBackground
 
 
 #---- Component ----
@@ -192,6 +212,7 @@ Component.innerFocusWidth={float}0.5
 Component.innerOutlineWidth={float}1
 Component.arc=5
 Component.minimumWidth=64
+# allowed values: chevron or triangle
 Component.arrowType=chevron
 Component.hideMnemonics=true
 
@@ -219,6 +240,7 @@ FileChooser.homeFolderIcon=com.formdev.flatlaf.icons.FlatFileChooserHomeFolderIc
 FileChooser.detailsViewIcon=com.formdev.flatlaf.icons.FlatFileChooserDetailsViewIcon
 FileChooser.listViewIcon=com.formdev.flatlaf.icons.FlatFileChooserListViewIcon
 FileChooser.usesSingleFilePane=true
+[win]FileChooser.useSystemExtensionHiding=true
 
 
 #---- FileView ----
@@ -287,6 +309,7 @@ List.cellFocusColor=@cellFocusColor
 List.cellNoFocusBorder=com.formdev.flatlaf.ui.FlatListCellBorder$Default
 List.focusCellHighlightBorder=com.formdev.flatlaf.ui.FlatListCellBorder$Focused
 List.focusSelectedCellHighlightBorder=com.formdev.flatlaf.ui.FlatListCellBorder$Selected
+List.background=@textComponentBackground
 List.selectionInactiveBackground=@selectionInactiveBackground
 List.selectionInactiveForeground=@selectionInactiveForeground
 List.dropCellBackground=@dropCellBackground
@@ -312,6 +335,7 @@ Menu.background=@menuBackground
 
 MenuBar.border=com.formdev.flatlaf.ui.FlatMenuBarBorder
 MenuBar.background=@menuBackground
+MenuBar.hoverBackground=@menuHoverBackground
 MenuBar.itemMargins=3,8,3,8
 
 
@@ -337,7 +361,7 @@ MenuItem.acceleratorDelimiter=-
 
 # for MenuItem.selectionType=underline
 MenuItem.underlineSelectionBackground=@menuHoverBackground
-MenuItem.underlineSelectionCheckBackground=@menuCheckHoverBackground
+MenuItem.underlineSelectionCheckBackground=@menuCheckBackground
 MenuItem.underlineSelectionColor=$TabbedPane.underlineColor
 MenuItem.underlineSelectionHeight=3
 
@@ -372,6 +396,7 @@ PasswordField.margin=@textComponentMargin
 PasswordField.background=@textComponentBackground
 PasswordField.placeholderForeground=@disabledText
 PasswordField.echoChar=\u2022
+PasswordField.showCapsLock=true
 PasswordField.capsLockIcon=com.formdev.flatlaf.icons.FlatCapsLockIcon
 
 
@@ -410,6 +435,7 @@ ProgressBar.repaintInterval=15
 RadioButton.border=com.formdev.flatlaf.ui.FlatMarginBorder
 RadioButton.icon=com.formdev.flatlaf.icons.FlatRadioButtonIcon
 RadioButton.icon.centerDiameter=8
+RadioButton.icon[filled].centerDiameter=5
 RadioButton.margin=2,2,2,2
 RadioButton.iconTextGap=4
 RadioButton.rollover=true
@@ -438,6 +464,8 @@ RootPane.honorDialogMinimumSizeOnResize=true
 #---- ScrollBar ----
 
 ScrollBar.width=10
+ScrollBar.minimumThumbSize=10,10
+ScrollBar.maximumThumbSize=100000,100000
 ScrollBar.trackInsets=0,0,0,0
 ScrollBar.thumbInsets=0,0,0,0
 ScrollBar.trackArc=0
@@ -450,10 +478,12 @@ ScrollBar.buttonArrowColor=$ComboBox.buttonArrowColor
 ScrollBar.buttonDisabledArrowColor=$ComboBox.buttonDisabledArrowColor
 ScrollBar.allowsAbsolutePositioning=true
 
+[mac]ScrollBar.minimumThumbSize=18,18
 [mac]ScrollBar.thumbInsets=2,2,2,2
 [mac]ScrollBar.thumbArc=999
 [mac]ScrollBar.hoverThumbWithTrack=true
 
+[linux]ScrollBar.minimumThumbSize=18,18
 [linux]ScrollBar.thumbInsets=2,2,2,2
 [linux]ScrollBar.thumbArc=999
 
@@ -476,8 +506,9 @@ Separator.stripeIndent=1
 #---- Slider ----
 
 Slider.focusInsets=0,0,0,0
-Slider.trackWidth=3
-Slider.thumbWidth=11
+Slider.trackWidth=2
+Slider.thumbSize=12,12
+Slider.focusWidth=4
 
 
 #---- Spinner ----
@@ -490,6 +521,7 @@ Spinner.buttonDisabledArrowColor=$ComboBox.buttonDisabledArrowColor
 Spinner.buttonHoverArrowColor=$ComboBox.buttonHoverArrowColor
 Spinner.padding=@textComponentMargin
 Spinner.editorBorderPainted=false
+# allowed values: button or none
 Spinner.buttonStyle=button
 
 
@@ -504,6 +536,12 @@ SplitPane.oneTouchButtonOffset={scaledInteger}2
 
 SplitPaneDivider.border=null
 SplitPaneDivider.oneTouchArrowColor=$ComboBox.buttonArrowColor
+# allowed values: grip or plain
+SplitPaneDivider.style=grip
+SplitPaneDivider.gripColor=@icon
+SplitPaneDivider.gripDotCount=3
+SplitPaneDivider.gripDotSize={integer}3
+SplitPaneDivider.gripGap=2
 
 
 #---- TabbedPane ----
@@ -511,14 +549,46 @@ SplitPaneDivider.oneTouchArrowColor=$ComboBox.buttonArrowColor
 TabbedPane.tabHeight=32
 TabbedPane.tabSelectionHeight=3
 TabbedPane.contentSeparatorHeight=1
+TabbedPane.showTabSeparators=false
+TabbedPane.tabSeparatorsFullHeight=false
 TabbedPane.hasFullBorder=false
-TabbedPane.tabInsets=0,12,0,12
+TabbedPane.tabInsets=4,12,4,12
 TabbedPane.tabAreaInsets=0,0,0,0
 TabbedPane.selectedTabPadInsets=0,0,0,0
 TabbedPane.tabRunOverlay=0
-TabbedPane.tabsOverlapBorder=true
+TabbedPane.tabsOverlapBorder=false
+TabbedPane.disabledForeground=@disabledText
 TabbedPane.shadow=@background
 TabbedPane.contentBorderInsets=null
+# allowed values: moreTabsButton or arrowButtons
+TabbedPane.hiddenTabsNavigation=moreTabsButton
+# allowed values: leading, trailing, center or fill
+TabbedPane.tabAreaAlignment=leading
+# allowed values: leading, trailing or center
+TabbedPane.tabAlignment=center
+# allowed values: preferred, equal or compact
+TabbedPane.tabWidthMode=preferred
+
+# allowed values: chevron or triangle
+TabbedPane.arrowType=chevron
+TabbedPane.buttonInsets=2,1,2,1
+TabbedPane.buttonArc=$Button.arc
+
+# allowed values: wrap or scroll
+#TabbedPane.tabLayoutPolicy=scroll
+# allowed values: never or asNeeded 
+TabbedPane.tabsPopupPolicy=asNeeded
+# allowed values: never, asNeeded or asNeededSingle
+TabbedPane.scrollButtonsPolicy=asNeededSingle
+# allowed values: both or trailing
+TabbedPane.scrollButtonsPlacement=both
+
+TabbedPane.closeIcon=com.formdev.flatlaf.icons.FlatTabbedPaneCloseIcon
+TabbedPane.closeSize=16,16
+TabbedPane.closeArc=4
+TabbedPane.closeCrossPlainSize={float}7.5
+TabbedPane.closeCrossFilledSize=$TabbedPane.closeCrossPlainSize
+TabbedPane.closeCrossLineWidth={float}1
 
 
 #---- Table ----
@@ -526,6 +596,7 @@ TabbedPane.contentBorderInsets=null
 Table.rowHeight=20
 Table.showHorizontalLines=false
 Table.showVerticalLines=false
+Table.consistentHomeEndKeyBehavior=true
 Table.intercellSpacing={dimension}0,0
 Table.scrollPaneBorder=com.formdev.flatlaf.ui.FlatBorder
 Table.ascendingSortIcon=com.formdev.flatlaf.icons.FlatAscendingSortIcon
@@ -538,6 +609,7 @@ Table.focusCellHighlightBorder=com.formdev.flatlaf.ui.FlatTableCellBorder$Focuse
 Table.focusSelectedCellHighlightBorder=com.formdev.flatlaf.ui.FlatTableCellBorder$Selected
 Table.focusCellBackground=@textComponentBackground
 Table.focusCellForeground=@foreground
+Table.background=@textComponentBackground
 Table.selectionInactiveBackground=@selectionInactiveBackground
 Table.selectionInactiveForeground=@selectionInactiveForeground
 Table.dropCellBackground=@dropCellBackground
@@ -551,6 +623,7 @@ Table.dropLineShortColor=@dropLineShortColor
 TableHeader.height=25
 TableHeader.cellBorder=2,3,2,3
 TableHeader.focusCellBackground=$TableHeader.background
+TableHeader.background=@textComponentBackground
 
 
 #---- TextArea ----
@@ -562,8 +635,9 @@ TextArea.background=@textComponentBackground
 
 #---- TextComponent ----
 
-# allowed values: "never", "once" (default) or "always"
+# allowed values: never, once or always
 TextComponent.selectAllOnFocusPolicy=once
+TextComponent.selectAllOnMouseClick=false
 TextComponent.arc=0
 
 
@@ -608,7 +682,7 @@ TitlePane.foreground=@foreground
 TitlePane.inactiveForeground=@disabledText
 
 TitlePane.closeHoverBackground=#e81123
-TitlePane.closePressedBackground=rgba($TitlePane.closeHoverBackground,60%)
+TitlePane.closePressedBackground=fade($TitlePane.closeHoverBackground,60%)
 TitlePane.closeHoverForeground=#fff
 TitlePane.closePressedForeground=#fff
 
@@ -622,6 +696,7 @@ ToggleButton.rollover=true
 
 ToggleButton.background=$Button.background
 ToggleButton.pressedBackground=$Button.pressedBackground
+ToggleButton.selectedForeground=@foreground
 
 ToggleButton.toolbar.hoverBackground=$Button.toolbar.hoverBackground
 ToggleButton.toolbar.pressedBackground=$Button.toolbar.pressedBackground
@@ -662,9 +737,11 @@ ToolTipManager.enableToolTipMode=activeApplication
 
 Tree.border=1,1,1,1
 Tree.editorBorder=1,1,1,1,@cellFocusColor
+Tree.background=@textComponentBackground
 Tree.selectionInactiveBackground=@selectionInactiveBackground
 Tree.selectionInactiveForeground=@selectionInactiveForeground
 Tree.textBackground=$Tree.background
+Tree.textForeground=$Tree.foreground
 Tree.selectionBorderColor=@cellFocusColor
 Tree.dropCellBackground=@dropCellBackground
 Tree.dropCellForeground=@dropCellForeground

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLightLaf.properties

@@ -21,18 +21,19 @@
 #---- variables ----
 
 @background=#f2f2f2
-@foreground=#000000
+@foreground=#000
 @selectionBackground=#2675BF
-@selectionForeground=#ffffff
+@selectionForeground=#fff
 @selectionInactiveBackground=#d4d4d4
 @selectionInactiveForeground=@foreground
 @disabledText=#8C8C8C
-@textComponentBackground=#ffffff
+@textComponentBackground=#fff
 @menuBackground=#fff
 @menuHoverBackground=darken(@menuBackground,10%,derived)
-@menuCheckBackground=darken(@menuBackground,10%,derived)
-@menuCheckHoverBackground=darken(@menuBackground,20%,derived)
-@cellFocusColor=#000000
+@menuCheckBackground=lighten(@selectionBackground,40%)
+@menuAcceleratorForeground=lighten(@foreground,30%)
+@menuAcceleratorSelectionForeground=@selectionForeground
+@cellFocusColor=#000
 @icon=#afafaf
 
 # Drop (use lazy colors for IntelliJ platform themes, which usually do not specify these colors)
@@ -42,24 +43,6 @@
 @dropLineShortColor=darken(List.selectionBackground,20%,lazy)
 
 
-#---- globals ----
-
-*.background=@background
-*.foreground=@foreground
-*.textBackground=#cccccc
-*.textForeground=@foreground
-*.caretForeground=@foreground
-*.inactiveBackground=@background
-*.inactiveForeground=@disabledText
-*.selectionBackground=@selectionBackground
-*.selectionForeground=@selectionForeground
-*.disabledBackground=@background
-*.disabledForeground=@disabledText
-*.disabledText=@disabledText
-*.acceleratorForeground=lighten(@foreground,30%)
-*.acceleratorSelectionForeground=@selectionForeground
-
-
 #---- system colors ----
 
 activeCaption=#99b4d1
@@ -71,10 +54,13 @@ controlDkShadow=darken($controlShadow,15%)
 
 #---- Button ----
 
-Button.background=#ffffff
+Button.background=#fff
 Button.focusedBackground=#e3f1fa
 Button.hoverBackground=darken($Button.background,3%,derived)
 Button.pressedBackground=darken($Button.background,10%,derived)
+Button.selectedBackground=darken($Button.background,20%,derived)
+Button.selectedForeground=@foreground
+Button.disabledSelectedBackground=darken($Button.background,13%,derived)
 
 Button.borderColor=$Component.borderColor
 Button.disabledBorderColor=$Component.disabledBorderColor
@@ -94,13 +80,14 @@ Button.default.borderWidth=2
 
 Button.toolbar.hoverBackground=darken($Button.background,12%,derived)
 Button.toolbar.pressedBackground=darken($Button.background,15%,derived)
+Button.toolbar.selectedBackground=$Button.selectedBackground
 
 
 #---- CheckBox ----
 
 # enabled
 CheckBox.icon.borderColor=#b0b0b0
-CheckBox.icon.background=#FFFFFF
+CheckBox.icon.background=#fff
 CheckBox.icon.selectedBorderColor=$CheckBox.icon.borderColor
 CheckBox.icon.selectedBackground=$CheckBox.icon.background
 CheckBox.icon.checkmarkColor=#4F9EE3
@@ -126,25 +113,23 @@ CheckBox.icon.pressedBackground=$Button.pressedBackground
 # enabled
 CheckBox.icon[filled].selectedBorderColor=#4B97D9
 CheckBox.icon[filled].selectedBackground=#4F9EE3
-CheckBox.icon[filled].checkmarkColor=#FFFFFF
+CheckBox.icon[filled].checkmarkColor=#fff
 # focused
 CheckBox.icon[filled].selectedFocusedBorderColor=#ACCFF7
 CheckBox.icon[filled].selectedFocusedBackground=$CheckBox.icon[filled].selectedBackground
 CheckBox.icon[filled].selectedFocusedCheckmarkColor=$CheckBox.icon.focusedBackground
 # hover
-CheckBox.icon[filled].selectedHoverBackground=#5E94CE
+CheckBox.icon[filled].selectedHoverBackground=darken($CheckBox.icon[filled].selectedBackground,5%)
 # pressed
-CheckBox.icon[filled].selectedPressedBackground=#72A1D4
+CheckBox.icon[filled].selectedPressedBackground=darken($CheckBox.icon[filled].selectedBackground,10%)
 
 
 #---- ComboBox ----
 
-ComboBox.background=@textComponentBackground
-ComboBox.buttonBackground=@textComponentBackground
 ComboBox.buttonEditableBackground=#fafafa
-ComboBox.buttonArrowColor=#666666
+ComboBox.buttonArrowColor=#666
 ComboBox.buttonDisabledArrowColor=#ABABAB
-ComboBox.buttonHoverArrowColor=#999999
+ComboBox.buttonHoverArrowColor=#999
 
 
 #---- Component ----
@@ -199,21 +184,15 @@ InternalFrame.activeDropShadowOpacity=0.25
 InternalFrame.inactiveDropShadowOpacity=0.5
 
 
-#---- List ----
-
-List.background=@textComponentBackground
-
-
 #---- Menu ----
 
-Menu.icon.arrowColor=#666666
+Menu.icon.arrowColor=#666
 Menu.icon.disabledArrowColor=#ABABAB
 
 
 #---- MenuBar ----
 
 MenuBar.borderColor=#cdcdcd
-MenuBar.hoverBackground=@menuHoverBackground
 
 
 #---- MenuItemCheckBox ----
@@ -246,11 +225,6 @@ ProgressBar.selectionForeground=@textComponentBackground
 ProgressBar.selectionBackground=@foreground
 
 
-#---- RadioButton ----
-
-RadioButton.icon[filled].centerDiameter=5
-
-
 #---- RootPane ----
 
 RootPane.activeBorderColor=#707070
@@ -275,38 +249,49 @@ Separator.foreground=#d1d1d1
 
 #---- Slider ----
 
+Slider.trackValueColor=#1E82E6
 Slider.trackColor=#c4c4c4
-Slider.thumbColor=#6e6e6e
-Slider.tickColor=#888888
-Slider.hoverColor=lighten($Slider.thumbColor,15%,derived)
-Slider.disabledForeground=#c0c0c0
+Slider.thumbColor=$Slider.trackValueColor
+Slider.tickColor=#888
+Slider.focusedColor=fade($Component.focusColor,50%,derived)
+Slider.hoverThumbColor=lighten($Slider.thumbColor,10%,derived)
+Slider.pressedThumbColor=lighten($Slider.thumbColor,15%,derived)
+Slider.disabledTrackColor=#c0c0c0
+Slider.disabledThumbColor=$Slider.disabledTrackColor
 
 
 #---- SplitPane ----
 
 SplitPaneDivider.draggingColor=#c4c4c4
-SplitPaneDivider.oneTouchHoverArrowColor=#333333
+SplitPaneDivider.oneTouchHoverArrowColor=#333
 
 
 #---- TabbedPane ----
 
-TabbedPane.disabledForeground=@disabledText
 TabbedPane.underlineColor=#4083C9
 TabbedPane.disabledUnderlineColor=#ababab
-TabbedPane.hoverColor=#d9d9d9
+TabbedPane.hoverColor=darken($TabbedPane.background,7%,derived)
 TabbedPane.focusColor=#dae4ed
 TabbedPane.contentAreaColor=#bfbfbf
 
+TabbedPane.buttonHoverBackground=darken($TabbedPane.background,7%,derived)
+TabbedPane.buttonPressedBackground=darken($TabbedPane.background,10%,derived)
+
+TabbedPane.closeBackground=null
+TabbedPane.closeForeground=@disabledText
+TabbedPane.closeHoverBackground=darken($TabbedPane.background,20%,derived)
+TabbedPane.closeHoverForeground=@foreground
+TabbedPane.closePressedBackground=darken($TabbedPane.background,25%,derived)
+TabbedPane.closePressedForeground=$TabbedPane.closeHoverForeground
+
 
 #---- Table ----
 
-Table.background=@textComponentBackground
-Table.gridColor=darken($Table.background,3%)
+Table.gridColor=darken($Table.background,5%)
 
 
 #---- TableHeader ----
 
-TableHeader.background=@textComponentBackground
 TableHeader.separatorColor=darken($TableHeader.background,10%)
 TableHeader.bottomSeparatorColor=$TableHeader.separatorColor
 
@@ -321,7 +306,6 @@ TitlePane.buttonPressedBackground=darken($TitlePane.background,20%,derived)
 #---- ToggleButton ----
 
 ToggleButton.selectedBackground=darken($ToggleButton.background,20%,derived)
-ToggleButton.selectedForeground=@foreground
 ToggleButton.disabledSelectedBackground=darken($ToggleButton.background,13%,derived)
 
 ToggleButton.toolbar.selectedBackground=$ToggleButton.selectedBackground
@@ -335,5 +319,4 @@ ToolTip.background=#fafafa
 
 #---- Tree ----
 
-Tree.background=@textComponentBackground
 Tree.hash=#E6E6E6

flatlaf-core/src/main/resources/com/formdev/flatlaf/IntelliJTheme$ThemeLaf.properties

@@ -35,6 +35,11 @@ Button.default.hoverBorderColor=null
 HelpButton.hoverBorderColor=null
 
 
+#---- Slider ----
+
+Slider.focusedColor=fade($Component.focusColor,40%,derived)
+
+
 #---- ToggleButton ----
 
 ToggleButton.startBackground=$ToggleButton.background
@@ -45,6 +50,26 @@ ToggleButton.endBackground=$ToggleButton.background
 
 #---- theme specific ----
 
+[Arc_Theme]ProgressBar.selectionBackground=#000
+[Arc_Theme]ProgressBar.selectionForeground=#fff
+
+[Arc_Theme_-_Orange]ProgressBar.selectionBackground=#000
+[Arc_Theme_-_Orange]ProgressBar.selectionForeground=#fff
+
+[Arc_Theme_Dark]ProgressBar.selectionBackground=#ddd
+[Arc_Theme_Dark]ProgressBar.selectionForeground=#ddd
+
+[Arc_Theme_Dark_-_Orange]ProgressBar.selectionBackground=#ddd
+[Arc_Theme_Dark_-_Orange]ProgressBar.selectionForeground=#fff
+
+[Cobalt_2]CheckBox.icon.background=#002946
+[Cobalt_2]CheckBox.icon.checkmarkColor=#002946
+
+[Dark_purple]Slider.focusedColor=fade($Component.focusColor,70%,derived)
+
+[Dracula]ProgressBar.selectionBackground=#fff
+[Dracula]ProgressBar.selectionForeground=#fff
+
 [Gruvbox_Dark_Hard]ToggleButton.selectedBackground=$ToggleButton.selectedBackground
 [Gruvbox_Dark_Hard]ToggleButton.toolbar.selectedBackground=$ToggleButton.toolbar.selectedBackground
 
@@ -62,3 +87,66 @@ ToggleButton.endBackground=$ToggleButton.background
 [High_contrast]ToggleButton.selectedForeground=#000
 [High_contrast]ToggleButton.disabledSelectedBackground=#444
 [High_contrast]ToggleButton.toolbar.selectedBackground=#fff
+
+[One_Dark]Slider.focusedColor=fade(#568af2,40%)
+
+[Solarized_Dark]Slider.focusedColor=fade($Component.focusColor,80%,derived)
+
+[vuesion-theme]Slider.trackValueColor=#ececee
+[vuesion-theme]Slider.trackColor=#303a45
+[vuesion-theme]Slider.thumbColor=#ececee
+[vuesion-theme]Slider.focusedColor=fade(#ececee,20%)
+
+
+# Material Theme UI Lite
+
+[Dracula_Contrast]ProgressBar.selectionBackground=#fff
+[Dracula_Contrast]ProgressBar.selectionForeground=#fff
+
+[GitHub]ProgressBar.selectionBackground=#222
+[GitHub]ProgressBar.selectionForeground=#222
+
+[GitHub_Contrast]ProgressBar.selectionBackground=#222
+[GitHub_Contrast]ProgressBar.selectionForeground=#222
+
+[Light_Owl]ProgressBar.selectionBackground=#111
+[Light_Owl]ProgressBar.selectionForeground=#fff
+
+[Light_Owl_Contrast]ProgressBar.selectionBackground=#111
+[Light_Owl_Contrast]ProgressBar.selectionForeground=#fff
+
+[Material_Lighter]ProgressBar.selectionBackground=#222
+[Material_Lighter]ProgressBar.selectionForeground=#fff
+
+[Material_Lighter_Contrast]ProgressBar.selectionBackground=#222
+[Material_Lighter_Contrast]ProgressBar.selectionForeground=#fff
+
+[Material_Oceanic]ProgressBar.selectionBackground=#ddd
+[Material_Oceanic]ProgressBar.selectionForeground=#ddd
+
+[Material_Oceanic_Contrast]ProgressBar.selectionBackground=#ddd
+[Material_Oceanic_Contrast]ProgressBar.selectionForeground=#ddd
+
+[Material_Palenight]ProgressBar.selectionBackground=#ddd
+[Material_Palenight]ProgressBar.selectionForeground=#ddd
+
+[Material_Palenight_Contrast]ProgressBar.selectionBackground=#ddd
+[Material_Palenight_Contrast]ProgressBar.selectionForeground=#ddd
+
+[Night_Owl]ProgressBar.selectionBackground=#ddd
+[Night_Owl]ProgressBar.selectionForeground=#ddd
+
+[Night_Owl_Contrast]ProgressBar.selectionBackground=#ddd
+[Night_Owl_Contrast]ProgressBar.selectionForeground=#ddd
+
+[Solarized_Dark]ProgressBar.selectionBackground=#ccc
+[Solarized_Dark]ProgressBar.selectionForeground=#ccc
+
+[Material_Solarized_Dark_Contrast]ProgressBar.selectionBackground=#ccc
+[Material_Solarized_Dark_Contrast]ProgressBar.selectionForeground=#ccc
+
+[Solarized_Light]ProgressBar.selectionBackground=#222
+[Solarized_Light]ProgressBar.selectionForeground=#fff
+
+[Material_Solarized_Light_Contrast]ProgressBar.selectionBackground=#222
+[Material_Solarized_Light_Contrast]ProgressBar.selectionForeground=#fff

flatlaf-core/src/main/resources/com/formdev/flatlaf/resources/Bundle.properties

@@ -46,3 +46,20 @@ FileChooser.refreshActionLabelText=Refresh
 FileChooser.newFolderActionLabelText=New Folder
 FileChooser.listViewActionLabelText=List
 FileChooser.detailsViewActionLabelText=Details
+
+
+#---- SplitPaneDivider ----
+
+SplitPaneDivider.collapseLeftToolTipText=Collapse Left Pane
+SplitPaneDivider.collapseRightToolTipText=Collapse Right Pane
+SplitPaneDivider.collapseTopToolTipText=Collapse Top Pane
+SplitPaneDivider.collapseBottomToolTipText=Collapse Bottom Pane
+SplitPaneDivider.expandLeftToolTipText=Expand Left Pane
+SplitPaneDivider.expandRightToolTipText=Expand Right Pane
+SplitPaneDivider.expandTopToolTipText=Expand Top Pane
+SplitPaneDivider.expandBottomToolTipText=Expand Bottom Pane
+
+
+#---- TabbedPane ----
+
+TabbedPane.moreTabsButtonToolTipText=Show Hidden Tabs

flatlaf-core/src/main/resources/com/formdev/flatlaf/resources/Bundle_de.properties

@@ -46,3 +46,8 @@ FileChooser.refreshActionLabelText=Aktualisieren
 FileChooser.newFolderActionLabelText=Neuer Ordner
 FileChooser.listViewActionLabelText=Liste
 FileChooser.detailsViewActionLabelText=Details
+
+
+#---- TabbedPane ----
+
+TabbedPane.moreTabsButtonToolTipText=Verdeckte Tabs anzeigen

flatlaf-demo/README.md

@@ -2,3 +2,12 @@ FlatLaf Demo
 ============
 
 This sub-project contains the FlatLaf Demo source code.
+
+
+Download
+--------
+
+[![Download Demo](https://download.formdev.com/flatlaf/images/download-demo.svg)](https://download.formdev.com/flatlaf/flatlaf-demo-latest.jar)
+
+Run demo with `java -jar flatlaf-demo-<version>.jar` (or double-click it).
+Requires Java 8 or newer.

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/BasicComponentsPanel.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.demo;
 
+import java.awt.Component;
 import javax.swing.*;
 import javax.swing.text.DefaultEditorKit;
 import net.miginfocom.swing.*;
@@ -114,14 +115,14 @@ class BasicComponentsPanel
 		JScrollPane scrollPane12 = new JScrollPane();
 		JTextPane textPane4 = new JTextPane();
 		JTextPane textPane5 = new JTextPane();
-		JLabel label3 = new JLabel();
-		JTextField textField5 = new JTextField();
-		JComboBox<String> comboBox7 = new JComboBox<>();
-		JSpinner spinner3 = new JSpinner();
-		JLabel label4 = new JLabel();
-		JTextField textField7 = new JTextField();
-		JComboBox<String> comboBox8 = new JComboBox<>();
-		JSpinner spinner4 = new JSpinner();
+		JLabel errorHintsLabel = new JLabel();
+		JTextField errorHintsTextField = new JTextField();
+		JComboBox<String> errorHintsComboBox = new JComboBox<>();
+		JSpinner errorHintsSpinner = new JSpinner();
+		JLabel warningHintsLabel = new JLabel();
+		JTextField warningHintsTextField = new JTextField();
+		JComboBox<String> warningHintsComboBox = new JComboBox<>();
+		JSpinner warningHintsSpinner = new JSpinner();
 		JPopupMenu popupMenu1 = new JPopupMenu();
 		JMenuItem cutMenuItem = new JMenuItem();
 		JMenuItem copyMenuItem = new JMenuItem();
@@ -129,12 +130,12 @@ class BasicComponentsPanel
 
 		//======== this ========
 		setLayout(new MigLayout(
-			"hidemode 3",
+			"insets dialog,hidemode 3",
 			// columns
-			"[]" +
-			"[]" +
-			"[]" +
-			"[]" +
+			"[sizegroup 1]" +
+			"[sizegroup 1]" +
+			"[sizegroup 1]" +
+			"[sizegroup 1]" +
 			"[]" +
 			"[]",
 			// rows
@@ -606,44 +607,44 @@ class BasicComponentsPanel
 		textPane5.setText("No scroll pane");
 		add(textPane5, "cell 5 11,growx");
 
-		//---- label3 ----
-		label3.setText("Error hints:");
-		add(label3, "cell 0 12");
+		//---- errorHintsLabel ----
+		errorHintsLabel.setText("Error hints:");
+		add(errorHintsLabel, "cell 0 12");
 
-		//---- textField5 ----
-		textField5.putClientProperty("JComponent.outline", "error");
-		add(textField5, "cell 1 12,growx");
+		//---- errorHintsTextField ----
+		errorHintsTextField.putClientProperty("JComponent.outline", "error");
+		add(errorHintsTextField, "cell 1 12,growx");
 
-		//---- comboBox7 ----
-		comboBox7.putClientProperty("JComponent.outline", "error");
-		comboBox7.setModel(new DefaultComboBoxModel<>(new String[] {
+		//---- errorHintsComboBox ----
+		errorHintsComboBox.putClientProperty("JComponent.outline", "error");
+		errorHintsComboBox.setModel(new DefaultComboBoxModel<>(new String[] {
 			"Editable"
 		}));
-		comboBox7.setEditable(true);
-		add(comboBox7, "cell 2 12,growx");
+		errorHintsComboBox.setEditable(true);
+		add(errorHintsComboBox, "cell 2 12,growx");
 
-		//---- spinner3 ----
-		spinner3.putClientProperty("JComponent.outline", "error");
-		add(spinner3, "cell 3 12,growx");
+		//---- errorHintsSpinner ----
+		errorHintsSpinner.putClientProperty("JComponent.outline", "error");
+		add(errorHintsSpinner, "cell 3 12,growx");
 
-		//---- label4 ----
-		label4.setText("Warning hints:");
-		add(label4, "cell 0 13");
+		//---- warningHintsLabel ----
+		warningHintsLabel.setText("Warning hints:");
+		add(warningHintsLabel, "cell 0 13");
 
-		//---- textField7 ----
-		textField7.putClientProperty("JComponent.outline", "warning");
-		add(textField7, "cell 1 13,growx");
+		//---- warningHintsTextField ----
+		warningHintsTextField.putClientProperty("JComponent.outline", "warning");
+		add(warningHintsTextField, "cell 1 13,growx");
 
-		//---- comboBox8 ----
-		comboBox8.putClientProperty("JComponent.outline", "warning");
-		comboBox8.setModel(new DefaultComboBoxModel<>(new String[] {
+		//---- warningHintsComboBox ----
+		warningHintsComboBox.putClientProperty("JComponent.outline", "warning");
+		warningHintsComboBox.setModel(new DefaultComboBoxModel<>(new String[] {
 			"Not editable"
 		}));
-		add(comboBox8, "cell 2 13,growx");
+		add(warningHintsComboBox, "cell 2 13,growx");
 
-		//---- spinner4 ----
-		spinner4.putClientProperty("JComponent.outline", "warning");
-		add(spinner4, "cell 3 13,growx");
+		//---- warningHintsSpinner ----
+		warningHintsSpinner.putClientProperty("JComponent.outline", "warning");
+		add(warningHintsSpinner, "cell 3 13,growx");
 
 		//======== popupMenu1 ========
 		{
@@ -668,6 +669,33 @@ class BasicComponentsPanel
 		cutMenuItem.addActionListener( new DefaultEditorKit.CutAction() );
 		copyMenuItem.addActionListener( new DefaultEditorKit.CopyAction() );
 		pasteMenuItem.addActionListener( new DefaultEditorKit.PasteAction() );
+
+		if( FlatLafDemo.screenshotsMode ) {
+			Component[] components = {
+				button13, button14, button15, button16, comboBox5, comboBox6,
+				textField6, passwordField5,
+
+				formattedTextFieldLabel, formattedTextField1, formattedTextField2, formattedTextField3, formattedTextField4, formattedTextField5,
+				textAreaLabel, scrollPane1, scrollPane2, scrollPane3, scrollPane4, textArea5,
+				editorPaneLabel, scrollPane5, scrollPane6, scrollPane7, scrollPane8, editorPane5,
+				textPaneLabel, scrollPane9, scrollPane10, scrollPane11, scrollPane12, textPane5,
+
+				errorHintsLabel, errorHintsTextField, errorHintsComboBox, errorHintsSpinner,
+				warningHintsLabel, warningHintsTextField, warningHintsComboBox, warningHintsSpinner,
+			};
+
+			for( Component c : components )
+				c.setVisible( false );
+
+			// move password fields one row up
+			Component[] formattedTextFields = { formattedTextFieldLabel, formattedTextField1, formattedTextField2, formattedTextField3, formattedTextField4 };
+			Component[] passwordFields = { passwordFieldLabel, passwordField1, passwordField2, passwordField3, passwordField4 };
+			MigLayout layout = (MigLayout) getLayout();
+			for( int i = 0; i < passwordFields.length; i++ ) {
+				Object cons = layout.getComponentConstraints( formattedTextFields[i] );
+				layout.setComponentConstraints( passwordFields[i], cons );
+			}
+		}
 	}
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/BasicComponentsPanel.jfd

@@ -7,8 +7,8 @@ new FormModel {
 			"JavaCodeGenerator.defaultVariableLocal": true
 		}
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-			"$layoutConstraints": "hidemode 3"
-			"$columnConstraints": "[][][][][][]"
+			"$layoutConstraints": "insets dialog,hidemode 3"
+			"$columnConstraints": "[sizegroup 1][sizegroup 1][sizegroup 1][sizegroup 1][][]"
 			"$rowConstraints": "[][][][][][][][][][][][]para[][]"
 		} ) {
 			name: "this"
@@ -592,19 +592,19 @@ new FormModel {
 				"value": "cell 5 11,growx"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "label3"
+				name: "errorHintsLabel"
 				"text": "Error hints:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 12"
 			} )
 			add( new FormComponent( "javax.swing.JTextField" ) {
-				name: "textField5"
+				name: "errorHintsTextField"
 				"$client.JComponent.outline": "error"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 12,growx"
 			} )
 			add( new FormComponent( "javax.swing.JComboBox" ) {
-				name: "comboBox7"
+				name: "errorHintsComboBox"
 				"$client.JComponent.outline": "error"
 				"model": new javax.swing.DefaultComboBoxModel {
 					selectedItem: "Editable"
@@ -615,25 +615,25 @@ new FormModel {
 				"value": "cell 2 12,growx"
 			} )
 			add( new FormComponent( "javax.swing.JSpinner" ) {
-				name: "spinner3"
+				name: "errorHintsSpinner"
 				"$client.JComponent.outline": "error"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 3 12,growx"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "label4"
+				name: "warningHintsLabel"
 				"text": "Warning hints:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 13"
 			} )
 			add( new FormComponent( "javax.swing.JTextField" ) {
-				name: "textField7"
+				name: "warningHintsTextField"
 				"$client.JComponent.outline": "warning"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 13,growx"
 			} )
 			add( new FormComponent( "javax.swing.JComboBox" ) {
-				name: "comboBox8"
+				name: "warningHintsComboBox"
 				"$client.JComponent.outline": "warning"
 				"model": new javax.swing.DefaultComboBoxModel {
 					selectedItem: "Not editable"
@@ -643,7 +643,7 @@ new FormModel {
 				"value": "cell 2 13,growx"
 			} )
 			add( new FormComponent( "javax.swing.JSpinner" ) {
-				name: "spinner4"
+				name: "warningHintsSpinner"
 				"$client.JComponent.outline": "warning"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 3 13,growx"

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/ControlBar.java

@@ -27,8 +27,12 @@ import javax.swing.UIManager.LookAndFeelInfo;
 import javax.swing.plaf.metal.MetalLookAndFeel;
 import javax.swing.plaf.nimbus.NimbusLookAndFeel;
 import com.formdev.flatlaf.*;
+import com.formdev.flatlaf.extras.FlatAnimatedLafChange;
 import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
+import net.miginfocom.layout.ConstraintParser;
+import net.miginfocom.layout.LC;
+import net.miginfocom.layout.UnitValue;
 import net.miginfocom.swing.*;
 
 /**
@@ -43,6 +47,18 @@ class ControlBar
 	ControlBar() {
 		initComponents();
 
+		// remove top insets
+		MigLayout layout = (MigLayout) getLayout();
+		LC lc = ConstraintParser.parseLayoutConstraint( (String) layout.getLayoutConstraints() );
+		UnitValue[] insets = lc.getInsets();
+		lc.setInsets( new UnitValue[] {
+			new UnitValue( 0, UnitValue.PIXEL, null ),
+			insets[1],
+			insets[2],
+			insets[3]
+		} );
+		layout.setLayoutConstraints( lc );
+
 		// initialize look and feels combo box
 		DefaultComboBoxModel<LookAndFeelInfo> lafModel = new DefaultComboBoxModel<>();
 		lafModel.addElement( new LookAndFeelInfo( "Flat Light (F1)", FlatLightLaf.class.getName() ) );
@@ -58,9 +74,9 @@ class ControlBar
 				className.equals( "com.sun.java.swing.plaf.motif.MotifLookAndFeel" ) )
 			  continue;
 
-			if( (SystemInfo.IS_WINDOWS && className.equals( "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" )) ||
-				(SystemInfo.IS_MAC && className.equals( "com.apple.laf.AquaLookAndFeel") ) ||
-				(SystemInfo.IS_LINUX && className.equals( "com.sun.java.swing.plaf.gtk.GTKLookAndFeel") ) )
+			if( (SystemInfo.isWindows && className.equals( "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" )) ||
+				(SystemInfo.isMacOS && className.equals( "com.apple.laf.AquaLookAndFeel") ) ||
+				(SystemInfo.isLinux && className.equals( "com.sun.java.swing.plaf.gtk.GTKLookAndFeel") ) )
 				name += " (F9)";
 			else if( className.equals( MetalLookAndFeel.class.getName() ) )
 				name += " (F12)";
@@ -111,15 +127,25 @@ class ControlBar
 		registerSwitchToLookAndFeel( KeyEvent.VK_F3, FlatIntelliJLaf.class.getName() );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F4, FlatDarculaLaf.class.getName() );
 
-		if( SystemInfo.IS_WINDOWS )
+		if( SystemInfo.isWindows )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
-		else if( SystemInfo.IS_MAC )
+		else if( SystemInfo.isMacOS )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.apple.laf.AquaLookAndFeel" );
-		else if( SystemInfo.IS_LINUX )
+		else if( SystemInfo.isLinux )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F12, MetalLookAndFeel.class.getName() );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F11, NimbusLookAndFeel.class.getName() );
 
+		// register Alt+UP and Alt+DOWN to switch to previous/next theme
+		((JComponent)frame.getContentPane()).registerKeyboardAction(
+			e -> frame.themesPanel.selectPreviousTheme(),
+			KeyStroke.getKeyStroke( KeyEvent.VK_UP, KeyEvent.ALT_DOWN_MASK ),
+			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
+		((JComponent)frame.getContentPane()).registerKeyboardAction(
+			e -> frame.themesPanel.selectNextTheme(),
+			KeyStroke.getKeyStroke( KeyEvent.VK_DOWN, KeyEvent.ALT_DOWN_MASK ),
+			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
+
 		// register ESC key to close frame
 		((JComponent)frame.getContentPane()).registerKeyboardAction(
 			e -> {
@@ -193,6 +219,8 @@ class ControlBar
 
 		EventQueue.invokeLater( () -> {
 			try {
+				FlatAnimatedLafChange.showSnapshot();
+
 				// change look and feel
 				UIManager.setLookAndFeel( lafClassName );
 
@@ -202,6 +230,7 @@ class ControlBar
 
 				// update all components
 				FlatLaf.updateUI();
+				FlatAnimatedLafChange.hideSnapshotWithAnimation();
 
 				// increase size of frame if necessary
 				int width = frame.getWidth();

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DataComponentsPanel.java

@@ -16,6 +16,9 @@
 
 package com.formdev.flatlaf.demo;
 
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.EventQueue;
 import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.StringSelection;
 import java.awt.datatransfer.Transferable;
@@ -64,6 +67,41 @@ class DataComponentsPanel
 		}
 	}
 
+	private void rowSelectionChanged() {
+		table1.setRowSelectionAllowed( rowSelectionCheckBox.isSelected() );
+	}
+
+	private void columnSelectionChanged() {
+		table1.setColumnSelectionAllowed( columnSelectionCheckBox.isSelected() );
+	}
+
+	private void showHorizontalLinesChanged() {
+		table1.setShowHorizontalLines( showHorizontalLinesCheckBox.isSelected() );
+	}
+
+	private void showVerticalLinesChanged() {
+		table1.setShowVerticalLines( showVerticalLinesCheckBox.isSelected() );
+	}
+
+	private void intercellSpacingChanged() {
+		table1.setIntercellSpacing( intercellSpacingCheckBox.isSelected() ? new Dimension( 1, 1 ) : new Dimension() );
+	}
+
+	private void redGridColorChanged() {
+		table1.setGridColor( redGridColorCheckBox.isSelected() ? Color.red : UIManager.getColor( "Table.gridColor" ) );
+	}
+
+	@Override
+	public void updateUI() {
+		super.updateUI();
+
+		EventQueue.invokeLater( () -> {
+			showHorizontalLinesChanged();
+			showVerticalLinesChanged();
+			intercellSpacingChanged();
+		} );
+	}
+
 	@SuppressWarnings( { "unchecked", "rawtypes" } )
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
@@ -80,6 +118,13 @@ class DataComponentsPanel
 		JLabel tableLabel = new JLabel();
 		JScrollPane scrollPane5 = new JScrollPane();
 		table1 = new JTable();
+		JPanel tableOptionsPanel = new JPanel();
+		showHorizontalLinesCheckBox = new JCheckBox();
+		showVerticalLinesCheckBox = new JCheckBox();
+		intercellSpacingCheckBox = new JCheckBox();
+		redGridColorCheckBox = new JCheckBox();
+		rowSelectionCheckBox = new JCheckBox();
+		columnSelectionCheckBox = new JCheckBox();
 		dndCheckBox = new JCheckBox();
 		JPopupMenu popupMenu2 = new JPopupMenu();
 		JMenuItem menuItem3 = new JMenuItem();
@@ -89,20 +134,20 @@ class DataComponentsPanel
 
 		//======== this ========
 		setLayout(new MigLayout(
-			"hidemode 3",
+			"insets dialog,hidemode 3",
 			// columns
 			"[]" +
-			"[200]" +
-			"[200]",
+			"[200,fill]" +
+			"[200,fill]" +
+			"[fill]",
 			// rows
-			"[]" +
-			"[::200]" +
-			"[::150]" +
-			"[]"));
+			"[150,grow,sizegroup 1,fill]" +
+			"[150,grow,sizegroup 1,fill]" +
+			"[150,grow,sizegroup 1,fill]"));
 
 		//---- listLabel ----
 		listLabel.setText("JList:");
-		add(listLabel, "cell 0 0");
+		add(listLabel, "cell 0 0,aligny top,growy 0");
 
 		//======== scrollPane1 ========
 		{
@@ -134,7 +179,7 @@ class DataComponentsPanel
 			list1.setComponentPopupMenu(popupMenu2);
 			scrollPane1.setViewportView(list1);
 		}
-		add(scrollPane1, "cell 1 0,growx");
+		add(scrollPane1, "cell 1 0");
 
 		//======== scrollPane2 ========
 		{
@@ -166,11 +211,11 @@ class DataComponentsPanel
 			list2.setEnabled(false);
 			scrollPane2.setViewportView(list2);
 		}
-		add(scrollPane2, "cell 2 0,growx");
+		add(scrollPane2, "cell 2 0");
 
 		//---- treeLabel ----
 		treeLabel.setText("JTree:");
-		add(treeLabel, "cell 0 1");
+		add(treeLabel, "cell 0 1,aligny top,growy 0");
 
 		//======== scrollPane3 ========
 		{
@@ -207,7 +252,7 @@ class DataComponentsPanel
 			tree1.setComponentPopupMenu(popupMenu2);
 			scrollPane3.setViewportView(tree1);
 		}
-		add(scrollPane3, "cell 1 1,growx");
+		add(scrollPane3, "cell 1 1");
 
 		//======== scrollPane4 ========
 		{
@@ -216,11 +261,11 @@ class DataComponentsPanel
 			tree2.setEnabled(false);
 			scrollPane4.setViewportView(tree2);
 		}
-		add(scrollPane4, "cell 2 1,growx");
+		add(scrollPane4, "cell 2 1");
 
 		//---- tableLabel ----
 		tableLabel.setText("JTable:");
-		add(tableLabel, "cell 0 2");
+		add(tableLabel, "cell 0 2,aligny top,growy 0");
 
 		//======== scrollPane5 ========
 		{
@@ -297,13 +342,61 @@ class DataComponentsPanel
 			table1.setComponentPopupMenu(popupMenu2);
 			scrollPane5.setViewportView(table1);
 		}
-		add(scrollPane5, "cell 1 2 2 1,growx,width 300");
+		add(scrollPane5, "cell 1 2 2 1,width 300");
 
-		//---- dndCheckBox ----
-		dndCheckBox.setText("enable drag and drop");
-		dndCheckBox.setMnemonic('D');
-		dndCheckBox.addActionListener(e -> dndChanged());
-		add(dndCheckBox, "cell 0 3 3 1");
+		//======== tableOptionsPanel ========
+		{
+			tableOptionsPanel.setLayout(new MigLayout(
+				"insets 0,hidemode 3",
+				// columns
+				"[]",
+				// rows
+				"[]0" +
+				"[]0" +
+				"[]0" +
+				"[]0" +
+				"[]0" +
+				"[]0" +
+				"[]0"));
+
+			//---- showHorizontalLinesCheckBox ----
+			showHorizontalLinesCheckBox.setText("show horizontal lines");
+			showHorizontalLinesCheckBox.addActionListener(e -> showHorizontalLinesChanged());
+			tableOptionsPanel.add(showHorizontalLinesCheckBox, "cell 0 0");
+
+			//---- showVerticalLinesCheckBox ----
+			showVerticalLinesCheckBox.setText("show vertical lines");
+			showVerticalLinesCheckBox.addActionListener(e -> showVerticalLinesChanged());
+			tableOptionsPanel.add(showVerticalLinesCheckBox, "cell 0 1");
+
+			//---- intercellSpacingCheckBox ----
+			intercellSpacingCheckBox.setText("intercell spacing");
+			intercellSpacingCheckBox.addActionListener(e -> intercellSpacingChanged());
+			tableOptionsPanel.add(intercellSpacingCheckBox, "cell 0 2");
+
+			//---- redGridColorCheckBox ----
+			redGridColorCheckBox.setText("red grid color");
+			redGridColorCheckBox.addActionListener(e -> redGridColorChanged());
+			tableOptionsPanel.add(redGridColorCheckBox, "cell 0 3");
+
+			//---- rowSelectionCheckBox ----
+			rowSelectionCheckBox.setText("row selection");
+			rowSelectionCheckBox.setSelected(true);
+			rowSelectionCheckBox.addActionListener(e -> rowSelectionChanged());
+			tableOptionsPanel.add(rowSelectionCheckBox, "cell 0 4");
+
+			//---- columnSelectionCheckBox ----
+			columnSelectionCheckBox.setText("column selection");
+			columnSelectionCheckBox.addActionListener(e -> columnSelectionChanged());
+			tableOptionsPanel.add(columnSelectionCheckBox, "cell 0 5");
+
+			//---- dndCheckBox ----
+			dndCheckBox.setText("enable drag and drop");
+			dndCheckBox.setMnemonic('D');
+			dndCheckBox.addActionListener(e -> dndChanged());
+			tableOptionsPanel.add(dndCheckBox, "cell 0 6");
+		}
+		add(tableOptionsPanel, "cell 3 2");
 
 		//======== popupMenu2 ========
 		{
@@ -336,6 +429,12 @@ class DataComponentsPanel
 	private JTree tree1;
 	private JTree tree2;
 	private JTable table1;
+	private JCheckBox showHorizontalLinesCheckBox;
+	private JCheckBox showVerticalLinesCheckBox;
+	private JCheckBox intercellSpacingCheckBox;
+	private JCheckBox redGridColorCheckBox;
+	private JCheckBox rowSelectionCheckBox;
+	private JCheckBox columnSelectionCheckBox;
 	private JCheckBox dndCheckBox;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DataComponentsPanel.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.1.0.272" Java: "13.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.2.0.298" Java: "14" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -7,16 +7,16 @@ new FormModel {
 			"JavaCodeGenerator.defaultVariableLocal": true
 		}
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-			"$layoutConstraints": "hidemode 3"
-			"$columnConstraints": "[][200][200]"
-			"$rowConstraints": "[][::200][::150][]"
+			"$layoutConstraints": "insets dialog,hidemode 3"
+			"$columnConstraints": "[][200,fill][200,fill][fill]"
+			"$rowConstraints": "[150,grow,sizegroup 1,fill][150,grow,sizegroup 1,fill][150,grow,sizegroup 1,fill]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "listLabel"
 				"text": "JList:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 0"
+				"value": "cell 0 0,aligny top,growy 0"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane1"
@@ -46,7 +46,7 @@ new FormModel {
 					}
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 0,growx"
+				"value": "cell 1 0"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane2"
@@ -76,13 +76,13 @@ new FormModel {
 					}
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0,growx"
+				"value": "cell 2 0"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "treeLabel"
 				"text": "JTree:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 1"
+				"value": "cell 0 1,aligny top,growy 0"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane3"
@@ -150,7 +150,7 @@ new FormModel {
 					}
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 1,growx"
+				"value": "cell 1 1"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane4"
@@ -162,13 +162,13 @@ new FormModel {
 					}
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 1,growx"
+				"value": "cell 2 1"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "tableLabel"
 				"text": "JTable:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 2"
+				"value": "cell 0 2,aligny top,growy 0"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane5"
@@ -307,22 +307,92 @@ new FormModel {
 					}
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 2 2 1,growx,width 300"
+				"value": "cell 1 2 2 1,width 300"
 			} )
-			add( new FormComponent( "javax.swing.JCheckBox" ) {
-				name: "dndCheckBox"
-				"text": "enable drag and drop"
-				"mnemonic": 68
-				auxiliary() {
-					"JavaCodeGenerator.variableLocal": false
-				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "dndChanged", false ) )
+			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+				"$layoutConstraints": "insets 0,hidemode 3"
+				"$columnConstraints": "[]"
+				"$rowConstraints": "[]0[]0[]0[]0[]0[]0[]0"
+			} ) {
+				name: "tableOptionsPanel"
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "showHorizontalLinesCheckBox"
+					"text": "show horizontal lines"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showHorizontalLinesChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "showVerticalLinesCheckBox"
+					"text": "show vertical lines"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showVerticalLinesChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "intercellSpacingCheckBox"
+					"text": "intercell spacing"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "intercellSpacingChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 2"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "redGridColorCheckBox"
+					"text": "red grid color"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "redGridColorChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 3"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "rowSelectionCheckBox"
+					"text": "row selection"
+					"selected": true
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rowSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 4"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "columnSelectionCheckBox"
+					"text": "column selection"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "columnSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 5"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "dndCheckBox"
+					"text": "enable drag and drop"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "dndChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 6"
+				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3 3 1"
+				"value": "cell 3 2"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 790, 715 )
+			"size": new java.awt.Dimension( 790, 745 )
 		} )
 		add( new FormContainer( "javax.swing.JPopupMenu", new FormLayoutManager( class javax.swing.JPopupMenu ) ) {
 			name: "popupMenu2"
@@ -346,7 +416,7 @@ new FormModel {
 				"text": "Noop Action"
 			} )
 		}, new FormLayoutConstraints( null ) {
-			"location": new java.awt.Point( 0, 740 )
+			"location": new java.awt.Point( 0, 800 )
 		} )
 	}
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -20,16 +20,23 @@ import java.awt.*;
 import java.awt.event.*;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.prefs.Preferences;
 import javax.swing.*;
 import javax.swing.text.DefaultEditorKit;
 import javax.swing.text.StyleContext;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.demo.HintManager.Hint;
 import com.formdev.flatlaf.demo.extras.*;
 import com.formdev.flatlaf.demo.intellijthemes.*;
+import com.formdev.flatlaf.extras.FlatAnimatedLafChange;
 import com.formdev.flatlaf.extras.FlatSVGIcon;
-import com.formdev.flatlaf.extras.SVGUtils;
+import com.formdev.flatlaf.extras.FlatUIDefaultsInspector;
+import com.formdev.flatlaf.extras.FlatSVGUtils;
 import com.formdev.flatlaf.ui.JBRCustomDecorations;
+import net.miginfocom.layout.ConstraintParser;
+import net.miginfocom.layout.LC;
+import net.miginfocom.layout.UnitValue;
 import net.miginfocom.swing.*;
 
 /**
@@ -52,10 +59,65 @@ class DemoFrame
 		updateFontMenuItems();
 		controlBar.initialize( this, tabbedPane );
 
-		setIconImages( SVGUtils.createWindowIconImages( "/com/formdev/flatlaf/demo/FlatLaf.svg" ) );
+		setIconImages( FlatSVGUtils.createWindowIconImages( "/com/formdev/flatlaf/demo/FlatLaf.svg" ) );
 
 		if( tabIndex >= 0 && tabIndex < tabbedPane.getTabCount() && tabIndex != tabbedPane.getSelectedIndex() )
 			tabbedPane.setSelectedIndex( tabIndex );
+
+		SwingUtilities.invokeLater( () -> {
+			showHints();
+		} );
+	}
+
+	@Override
+	public void dispose() {
+		super.dispose();
+
+		FlatUIDefaultsInspector.hide();
+	}
+
+	private void showHints() {
+		Hint fontMenuHint = new Hint(
+			"Use 'Font' menu to increase/decrease font size or try different fonts.",
+			fontMenu, SwingConstants.BOTTOM, "hint.fontMenu", null );
+
+		Hint optionsMenuHint = new Hint(
+			"Use 'Options' menu to try out various FlatLaf options.",
+			optionsMenu, SwingConstants.BOTTOM, "hint.optionsMenu", fontMenuHint );
+
+		Hint themesHint = new Hint(
+			"Use 'Themes' list to try out various themes.",
+			themesPanel, SwingConstants.LEFT, "hint.themesPanel", optionsMenuHint );
+
+		HintManager.showHint( themesHint );
+	}
+
+	private void clearHints() {
+		HintManager.hideAllHints();
+
+		Preferences state = DemoPrefs.getState();
+		state.remove( "hint.fontMenu" );
+		state.remove( "hint.optionsMenu" );
+		state.remove( "hint.themesPanel" );
+	}
+
+	private void showUIDefaultsInspector() {
+		FlatUIDefaultsInspector.show();
+	}
+
+	private void newActionPerformed() {
+		NewDialog newDialog = new NewDialog( this );
+		newDialog.setVisible( true );
+	}
+
+	private void openActionPerformed() {
+		JFileChooser chooser = new JFileChooser();
+		chooser.showOpenDialog( this );
+	}
+
+	private void saveAsActionPerformed() {
+		JFileChooser chooser = new JFileChooser();
+		chooser.showSaveDialog( this );
 	}
 
 	private void exitActionPerformed() {
@@ -79,11 +141,16 @@ class DemoFrame
 	private void windowDecorationsChanged() {
 		boolean windowDecorations = windowDecorationsCheckBoxMenuItem.isSelected();
 
+		// change window decoration of demo main frame
 		dispose();
 		setUndecorated( windowDecorations );
 		getRootPane().setWindowDecorationStyle( windowDecorations ? JRootPane.FRAME : JRootPane.NONE );
 		menuBarEmbeddedCheckBoxMenuItem.setEnabled( windowDecorations );
 		setVisible( true );
+
+		// enable/disable window decoration for later created frames/dialogs
+		JFrame.setDefaultLookAndFeelDecorated( windowDecorations );
+		JDialog.setDefaultLookAndFeelDecorated( windowDecorations );
 	}
 
 	private void menuBarEmbeddedChanged() {
@@ -105,14 +172,26 @@ class DemoFrame
 		repaint();
 	}
 
+	private void animatedLafChangeChanged() {
+		System.setProperty( "flatlaf.animatedLafChange", String.valueOf( animatedLafChangeMenuItem.isSelected() ) );
+	}
+
+	private void showHintsChanged() {
+		clearHints();
+		showHints();
+	}
+
 	private void fontFamilyChanged( ActionEvent e ) {
 		String fontFamily = e.getActionCommand();
 
+		FlatAnimatedLafChange.showSnapshot();
+
 		Font font = UIManager.getFont( "defaultFont" );
 		Font newFont = StyleContext.getDefaultStyleContext().getFont( fontFamily, font.getStyle(), font.getSize() );
 		UIManager.put( "defaultFont", newFont );
 
 		FlatLaf.updateUI();
+		FlatAnimatedLafChange.hideSnapshotWithAnimation();
 	}
 
 	private void fontSizeChanged( ActionEvent e ) {
@@ -216,6 +295,7 @@ class DemoFrame
 		JMenu fileMenu = new JMenu();
 		JMenuItem newMenuItem = new JMenuItem();
 		JMenuItem openMenuItem = new JMenuItem();
+		JMenuItem saveAsMenuItem = new JMenuItem();
 		JMenuItem closeMenuItem = new JMenuItem();
 		JMenuItem exitMenuItem = new JMenuItem();
 		JMenu editMenu = new JMenu();
@@ -235,6 +315,7 @@ class DemoFrame
 		JMenuItem projectViewMenuItem = new JMenuItem();
 		JMenuItem structureViewMenuItem = new JMenuItem();
 		JMenuItem propertiesViewMenuItem = new JMenuItem();
+		JMenuItem menuItem2 = new JMenuItem();
 		JMenuItem menuItem1 = new JMenuItem();
 		JRadioButtonMenuItem radioButtonMenuItem1 = new JRadioButtonMenuItem();
 		JRadioButtonMenuItem radioButtonMenuItem2 = new JRadioButtonMenuItem();
@@ -243,11 +324,14 @@ class DemoFrame
 		JMenuItem restoreFontMenuItem = new JMenuItem();
 		JMenuItem incrFontMenuItem = new JMenuItem();
 		JMenuItem decrFontMenuItem = new JMenuItem();
-		JMenu optionsMenu = new JMenu();
+		optionsMenu = new JMenu();
 		windowDecorationsCheckBoxMenuItem = new JCheckBoxMenuItem();
 		menuBarEmbeddedCheckBoxMenuItem = new JCheckBoxMenuItem();
 		underlineMenuSelectionMenuItem = new JCheckBoxMenuItem();
 		alwaysShowMnemonicsMenuItem = new JCheckBoxMenuItem();
+		animatedLafChangeMenuItem = new JCheckBoxMenuItem();
+		JMenuItem showHintsMenuItem = new JMenuItem();
+		JMenuItem showUIDefaultsInspectorMenuItem = new JMenuItem();
 		JMenu helpMenu = new JMenu();
 		JMenuItem aboutMenuItem = new JMenuItem();
 		JToolBar toolBar1 = new JToolBar();
@@ -267,7 +351,7 @@ class DemoFrame
 		OptionPanePanel optionPanePanel = new OptionPanePanel();
 		ExtrasPanel extrasPanel1 = new ExtrasPanel();
 		controlBar = new ControlBar();
-		IJThemesPanel themesPanel = new IJThemesPanel();
+		themesPanel = new IJThemesPanel();
 
 		//======== this ========
 		setTitle("FlatLaf Demo");
@@ -287,15 +371,22 @@ class DemoFrame
 				newMenuItem.setText("New");
 				newMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
 				newMenuItem.setMnemonic('N');
-				newMenuItem.addActionListener(e -> menuItemActionPerformed(e));
+				newMenuItem.addActionListener(e -> newActionPerformed());
 				fileMenu.add(newMenuItem);
 
 				//---- openMenuItem ----
-				openMenuItem.setText("Open");
+				openMenuItem.setText("Open...");
 				openMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
 				openMenuItem.setMnemonic('O');
-				openMenuItem.addActionListener(e -> menuItemActionPerformed(e));
+				openMenuItem.addActionListener(e -> openActionPerformed());
 				fileMenu.add(openMenuItem);
+
+				//---- saveAsMenuItem ----
+				saveAsMenuItem.setText("Save As...");
+				saveAsMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+				saveAsMenuItem.setMnemonic('S');
+				saveAsMenuItem.addActionListener(e -> saveAsActionPerformed());
+				fileMenu.add(saveAsMenuItem);
 				fileMenu.addSeparator();
 
 				//---- closeMenuItem ----
@@ -426,6 +517,11 @@ class DemoFrame
 				}
 				viewMenu.add(menu1);
 
+				//---- menuItem2 ----
+				menuItem2.setText("Disabled Item");
+				menuItem2.setEnabled(false);
+				viewMenu.add(menuItem2);
+
 				//---- menuItem1 ----
 				menuItem1.setText("<html>some <b color=\"red\">HTML</b> <i color=\"blue\">text</i></html>");
 				viewMenu.add(menuItem1);
@@ -501,6 +597,22 @@ class DemoFrame
 				alwaysShowMnemonicsMenuItem.setText("Always show mnemonics");
 				alwaysShowMnemonicsMenuItem.addActionListener(e -> alwaysShowMnemonics());
 				optionsMenu.add(alwaysShowMnemonicsMenuItem);
+
+				//---- animatedLafChangeMenuItem ----
+				animatedLafChangeMenuItem.setText("Animated Laf Change");
+				animatedLafChangeMenuItem.setSelected(true);
+				animatedLafChangeMenuItem.addActionListener(e -> animatedLafChangeChanged());
+				optionsMenu.add(animatedLafChangeMenuItem);
+
+				//---- showHintsMenuItem ----
+				showHintsMenuItem.setText("Show hints");
+				showHintsMenuItem.addActionListener(e -> showHintsChanged());
+				optionsMenu.add(showHintsMenuItem);
+
+				//---- showUIDefaultsInspectorMenuItem ----
+				showUIDefaultsInspectorMenuItem.setText("Show UI Defaults Inspector");
+				showUIDefaultsInspectorMenuItem.addActionListener(e -> showUIDefaultsInspector());
+				optionsMenu.add(showUIDefaultsInspectorMenuItem);
 			}
 			menuBar1.add(optionsMenu);
 
@@ -568,11 +680,12 @@ class DemoFrame
 
 			//======== tabbedPane ========
 			{
+				tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
 				tabbedPane.addChangeListener(e -> selectedTabChanged());
 				tabbedPane.addTab("Basic Components", basicComponentsPanel);
 				tabbedPane.addTab("More Components", moreComponentsPanel);
 				tabbedPane.addTab("Data Components", dataComponentsPanel);
-				tabbedPane.addTab("SplitPane & Tabs", tabsPanel);
+				tabbedPane.addTab("Tabs", tabsPanel);
 				tabbedPane.addTab("Option Pane", optionPanePanel);
 				tabbedPane.addTab("Extras", extrasPanel1);
 			}
@@ -612,15 +725,30 @@ class DemoFrame
 			.getSupportsWindowDecorations() || JBRCustomDecorations.isSupported();
 		windowDecorationsCheckBoxMenuItem.setEnabled( supportsWindowDecorations && !JBRCustomDecorations.isSupported() );
 		menuBarEmbeddedCheckBoxMenuItem.setEnabled( supportsWindowDecorations );
+
+		// remove contentPanel bottom insets
+		MigLayout layout = (MigLayout) contentPanel.getLayout();
+		LC lc = ConstraintParser.parseLayoutConstraint( (String) layout.getLayoutConstraints() );
+		UnitValue[] insets = lc.getInsets();
+		lc.setInsets( new UnitValue[] {
+			insets[0],
+			insets[1],
+			new UnitValue( 0, UnitValue.PIXEL, null ),
+			insets[3]
+		} );
+		layout.setLayoutConstraints( lc );
 	}
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JMenu fontMenu;
+	private JMenu optionsMenu;
 	private JCheckBoxMenuItem windowDecorationsCheckBoxMenuItem;
 	private JCheckBoxMenuItem menuBarEmbeddedCheckBoxMenuItem;
 	private JCheckBoxMenuItem underlineMenuSelectionMenuItem;
 	private JCheckBoxMenuItem alwaysShowMnemonicsMenuItem;
+	private JCheckBoxMenuItem animatedLafChangeMenuItem;
 	private JTabbedPane tabbedPane;
 	private ControlBar controlBar;
+	IJThemesPanel themesPanel;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.1.0.272" Java: "13.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.2.0.298" Java: "15" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -64,6 +64,7 @@ new FormModel {
 				name: "contentPanel"
 				add( new FormContainer( "javax.swing.JTabbedPane", new FormLayoutManager( class javax.swing.JTabbedPane ) ) {
 					name: "tabbedPane"
+					"tabLayoutPolicy": 1
 					auxiliary() {
 						"JavaCodeGenerator.variableLocal": false
 					}
@@ -86,7 +87,7 @@ new FormModel {
 					add( new FormComponent( "com.formdev.flatlaf.demo.TabsPanel" ) {
 						name: "tabsPanel"
 					}, new FormLayoutConstraints( null ) {
-						"title": "SplitPane & Tabs"
+						"title": "Tabs"
 					} )
 					add( new FormComponent( "com.formdev.flatlaf.demo.OptionPanePanel" ) {
 						name: "optionPanePanel"
@@ -114,6 +115,10 @@ new FormModel {
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.demo.intellijthemes.IJThemesPanel" ) {
 				name: "themesPanel"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+					"JavaCodeGenerator.variableModifiers": 0
+				}
 			}, new FormLayoutConstraints( class java.lang.String ) {
 				"value": "East"
 			} )
@@ -128,14 +133,21 @@ new FormModel {
 						"text": "New"
 						"accelerator": static javax.swing.KeyStroke getKeyStroke( 78, 4226, false )
 						"mnemonic": 78
-						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "menuItemActionPerformed", true ) )
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "newActionPerformed", false ) )
 					} )
 					add( new FormComponent( "javax.swing.JMenuItem" ) {
 						name: "openMenuItem"
-						"text": "Open"
+						"text": "Open..."
 						"accelerator": static javax.swing.KeyStroke getKeyStroke( 79, 4226, false )
 						"mnemonic": 79
-						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "menuItemActionPerformed", true ) )
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openActionPerformed", false ) )
+					} )
+					add( new FormComponent( "javax.swing.JMenuItem" ) {
+						name: "saveAsMenuItem"
+						"text": "Save As..."
+						"accelerator": static javax.swing.KeyStroke getKeyStroke( 83, 4226, false )
+						"mnemonic": 83
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "saveAsActionPerformed", false ) )
 					} )
 					add( new FormComponent( "javax.swing.JPopupMenu$Separator" ) {
 						name: "separator2"
@@ -264,6 +276,11 @@ new FormModel {
 							addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "menuItemActionPerformed", true ) )
 						} )
 					} )
+					add( new FormComponent( "javax.swing.JMenuItem" ) {
+						name: "menuItem2"
+						"text": "Disabled Item"
+						"enabled": false
+					} )
 					add( new FormComponent( "javax.swing.JMenuItem" ) {
 						name: "menuItem1"
 						"text": "<html>some <b color=\"red\">HTML</b> <i color=\"blue\">text</i></html>"
@@ -322,6 +339,9 @@ new FormModel {
 				add( new FormContainer( "javax.swing.JMenu", new FormLayoutManager( class javax.swing.JMenu ) ) {
 					name: "optionsMenu"
 					"text": "Options"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
 					add( new FormComponent( "javax.swing.JCheckBoxMenuItem" ) {
 						name: "windowDecorationsCheckBoxMenuItem"
 						"text": "Window decorations"
@@ -356,6 +376,25 @@ new FormModel {
 						}
 						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "alwaysShowMnemonics", false ) )
 					} )
+					add( new FormComponent( "javax.swing.JCheckBoxMenuItem" ) {
+						name: "animatedLafChangeMenuItem"
+						"text": "Animated Laf Change"
+						"selected": true
+						auxiliary() {
+							"JavaCodeGenerator.variableLocal": false
+						}
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "animatedLafChangeChanged", false ) )
+					} )
+					add( new FormComponent( "javax.swing.JMenuItem" ) {
+						name: "showHintsMenuItem"
+						"text": "Show hints"
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showHintsChanged", false ) )
+					} )
+					add( new FormComponent( "javax.swing.JMenuItem" ) {
+						name: "showUIDefaultsInspectorMenuItem"
+						"text": "Show UI Defaults Inspector"
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showUIDefaultsInspector", false ) )
+					} )
 				} )
 				add( new FormContainer( "javax.swing.JMenu", new FormLayoutManager( class javax.swing.JMenu ) ) {
 					name: "helpMenu"

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/FlatLafDemo.java

@@ -16,10 +16,13 @@
 
 package com.formdev.flatlaf.demo;
 
+import java.awt.Dimension;
 import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.SwingUtilities;
+import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.extras.FlatInspector;
+import com.formdev.flatlaf.extras.FlatUIDefaultsInspector;
 import com.formdev.flatlaf.util.SystemInfo;
 
 /**
@@ -30,9 +33,11 @@ public class FlatLafDemo
 	static final String PREFS_ROOT_PATH = "/flatlaf-demo";
 	static final String KEY_TAB = "tab";
 
+	static boolean screenshotsMode = Boolean.parseBoolean( System.getProperty( "flatlaf.demo.screenshotsMode" ) );
+
 	public static void main( String[] args ) {
 		// on macOS enable screen menu bar
-		if( SystemInfo.IS_MAC && System.getProperty( "apple.laf.useScreenMenuBar" ) == null )
+		if( SystemInfo.isMacOS && System.getProperty( "apple.laf.useScreenMenuBar" ) == null )
 			System.setProperty( "apple.laf.useScreenMenuBar", "true" );
 
 		SwingUtilities.invokeLater( () -> {
@@ -42,15 +47,22 @@ public class FlatLafDemo
 			JFrame.setDefaultLookAndFeelDecorated( true );
 			JDialog.setDefaultLookAndFeelDecorated( true );
 
+			// application specific UI defaults
+			FlatLaf.registerCustomDefaultsSource( "com.formdev.flatlaf.demo" );
+
 			// set look and feel
 			DemoPrefs.initLaf( args );
 
-			// install inspector
+			// install inspectors
 			FlatInspector.install( "ctrl shift alt X" );
+			FlatUIDefaultsInspector.install( "ctrl shift alt Y" );
 
 			// create frame
 			DemoFrame frame = new DemoFrame();
 
+			if( FlatLafDemo.screenshotsMode )
+				frame.setPreferredSize( new Dimension( 1280, 620 ) );
+
 			// show frame
 			frame.pack();
 			frame.setLocationRelativeTo( null );