release 0.15

- Improved styling of dark tooltips (darker background, no border).
- increased top and bottom margins
- use brighter color in light theme
- Fixed colors in tooltips of disabled components. (issue #15)

.travis.yml

@@ -5,6 +5,7 @@ jdk:
   - openjdk8
   - openjdk9
   - openjdk11
+  - openjdk13
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
@@ -24,5 +25,5 @@ deploy:
   skip_cleanup: true # to upload artifacts created during the build
   on:
     branch: master
-    jdk: openjdk8
+    jdk: openjdk11
     tags: true

CHANGELOG.md

@@ -1,6 +1,65 @@
 FlatLaf Change Log
 ==================
 
+## 0.15
+
+- ToolTip: Improved styling of dark tooltips (darker background, no border).
+- ToolTip: Fixed colors in tooltips of disabled components. (issue #15)
+- ComboBox: Fixed NPE in combobox with custom renderer after switching to
+  FlatLaf. (issue #16; regression in 0.14)
+
+
+## 0.14
+
+- ComboBox: Use small border if used as table editor.
+- ToolBar: Disable focusability of buttons in toolbar.
+- OptionPane: Fixed rendering of longer HTML text. (issue #12)
+- EditorPane and TextPane: Fixed font and text color when using HTML content.
+  (issue #9)
+- ComboBox: Fixed `StackOverflowError` when switching LaF. (issue #14)
+- SwingX: Support `JXBusyLabel`, `JXDatePicker`, `JXHeader`, `JXHyperlink`,
+  `JXMonthView`, `JXTaskPaneContainer` and `JXTaskPane`. (issue #8)
+
+
+## 0.13
+
+- Added developer information to Maven POM for Maven Central publishing.
+
+
+## 0.12
+
+- Support Linux. (issue #2)
+- Added `Flat*Laf.install()` methods.
+- macOS: Use native screen menu bar if system property
+  `apple.laf.useScreenMenuBar` is `true`.
+- Windows: Update fonts (and scaling) when user changes Windows text size
+  (Settings > Ease of Access > Display > Make text bigger).
+
+
+## 0.11
+
+- Changed Maven groupId to `com.formdev` and artifactId to `flatlaf`.
+
+
+## 0.10
+
+- Use new chevron arrows in "Flat Light" and "Flat Dark" themes, but keep
+  triangle arrows in "Flat IntelliJ" and "Flat Darcula" themes. (issue #7)
+- Use bold font for default buttons in "Flat IntelliJ" and "Flat Darcula"
+  themes.
+- Hide label, button and tab mnemonics by default and show them only when
+  <kbd>Alt</kbd> is pressed. (issue #4)
+- If a JButton has an icon and no text, then it does not get a minimum width
+  (usually 72 pixel) and the left and right insets are same as top/bottom insets
+  so that it becomes square (if the icon is square).
+- Changed styling of default button in "Flat Light" theme (wide blue border
+  instead of blue background).
+- Added Java 9 module descriptor `module-info.class` to `flatlaf.jar` (in
+  `META-INF/versions/9`). But FlatLaf remains Java 8 compatible. (issue #1)
+- Support specifying custom scale factor in system properties `flatlaf.uiScale`
+  or `sun.java2d.uiScale`. E.g. `-Dflatlaf.uiScale=1.5`. (Java 8 only)
+
+
 ## 0.9
 
 - Initial release

README.md

@@ -1,14 +1,15 @@
 FlatLaf - Flat Look and Feel
 ============================
 
-**FlatLaf** is a modern open-source cross-platform Look and Feel for Java
-desktop applications.
+**FlatLaf** is a modern **open-source** cross-platform Look and Feel for Java
+Swing desktop applications.
 
-It is mostly "flat" (no shadows or gradients), clean, simple and elegant. It
-comes with **Light** and **Dark** themes and is made for **HiDPI** displays.
+It looks almost flat (no shadows or gradients), clean, simple and elegant.
+FlatLaf comes with **Light**, **Dark**, **IntelliJ** and **Darcula** themes,
+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 mostly the same colors and icons.
+IntelliJ IDEA 2019.2+ and uses almost the same colors and icons.
 
 ![Flat Light Demo](images/FlatLightDemo.png)
 
@@ -18,19 +19,37 @@ IntelliJ IDEA 2019.2+ and uses mostly the same colors and icons.
 Demo
 ----
 
-Download
-[flatlaf-demo-0.1.jar](https://download.formdev.com/flatlaf/flatlaf-demo-0.1.jar)
-and run it with `java -jar flatlaf-demo-0.1.jar` (or double-click it). Requires
-Java 8 or newer.
+[![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.
 
 
 Download
 --------
 
-Coming soon
+FlatLaf binaries are available on **JCenter** and **Maven Central**.
+
+If you use Maven or Gradle, add a dependency with following coordinates to your
+build script:
+
+    groupId:     com.formdev
+    artifactId:  flatlaf
+    version:     0.15
+
+Otherwise download `flatlaf-<version>.jar` here:
+
+[![Download](https://api.bintray.com/packages/jformdesigner/flatlaf/flatlaf/images/download.svg)](https://bintray.com/jformdesigner/flatlaf/flatlaf/_latestVersion)
 
 
-License
--------
+Addons
+------
 
-FlatLaf is open source licensed under the [Apache 2.0 License](LICENSE)
+- [SwingX](flatlaf-swingx)
+
+
+Documentation
+-------------
+
+For more information and documentation visit
+[FlatLaf Home](https://www.formdev.com/flatlaf/)

build.gradle.kts

@@ -14,7 +14,13 @@
  * limitations under the License.
  */
 
-version = "0.9"
+version = "0.15"
+
+allprojects {
+	repositories {
+		jcenter()
+	}
+}
 
 // check required Java version
 if( JavaVersion.current() < JavaVersion.VERSION_1_8 )

flatlaf-core/build.gradle.kts

@@ -22,8 +22,16 @@ plugins {
 	id( "com.jfrog.bintray" ) version "1.8.4"
 }
 
-repositories {
-	jcenter()
+if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+	sourceSets {
+		create( "module-info" ) {
+			java {
+				// include "src/main/java" here to get compile errors if classes are
+				// used from other modules that are not specified in module dependencies
+				setSrcDirs( listOf( "src/main/module-info", "src/main/java" ) )
+			}
+		}
+	}
 }
 
 dependencies {
@@ -37,8 +45,26 @@ java {
 }
 
 tasks {
+	if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+		named<JavaCompile>( "compileModuleInfoJava" ) {
+			sourceCompatibility = "9"
+			targetCompatibility = "9"
+		}
+	}
+	
 	jar {
 		archiveBaseName.set( "flatlaf" )
+
+		if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+			manifest.attributes(
+				"Multi-Release" to "true"
+			)
+
+			into( "META-INF/versions/9" ) {
+				from( sourceSets["module-info"].output )
+				include( "module-info.class" )
+			}
+		}
 	}
 
 	javadoc {
@@ -62,13 +88,26 @@ tasks {
 
 		from( javadoc )
 	}
+
+	register( "testJar", Jar::class ) {
+		archiveBaseName.set( "flatlaf-test" )
+		from( sourceSets.test.get().output )
+	}
+}
+
+configurations {
+	create( "testArtifacts" )
+}
+
+artifacts {
+	add( "testArtifacts", tasks.getByPath( "testJar" ) )
 }
 
 publishing {
 	publications {
 		create<MavenPublication>( "maven" ) {
-			artifactId = "flatlaf-core"
-			groupId = "com.formdev.flatlaf"
+			artifactId = "flatlaf"
+			groupId = "com.formdev"
 
 			from( components["java"] )
 
@@ -87,6 +126,14 @@ publishing {
 					}
 				}
 
+				developers {
+					developer {
+						name.set( "Karl Tauber" )
+						organization.set( "FormDev Software GmbH" )
+						organizationUrl.set( "https://www.formdev.com/" )
+					}
+				}
+
 				scm {
 					url.set( "https://github.com/JFormDesigner/FlatLaf" )
 				}
@@ -103,7 +150,7 @@ bintray {
 
 	with( pkg ) {
 		repo = "flatlaf"
-		name = "flatlaf-core"
+		name = "flatlaf"
 		setLicenses( "Apache-2.0" )
 		vcsUrl = "https://github.com/JFormDesigner/FlatLaf"
 

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

@@ -24,6 +24,10 @@ package com.formdev.flatlaf;
 public class FlatDarculaLaf
 	extends FlatDarkLaf
 {
+	public static boolean install( ) {
+		return install( new FlatDarculaLaf() );
+	}
+
 	@Override
 	public String getName() {
 		return "Flat Darcula";

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

@@ -24,6 +24,10 @@ package com.formdev.flatlaf;
 public class FlatDarkLaf
 	extends FlatLaf
 {
+	public static boolean install( ) {
+		return install( new FlatDarkLaf() );
+	}
+
 	@Override
 	public String getName() {
 		return "Flat Dark";

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

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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;
+
+import java.io.InputStream;
+
+/**
+ * Addon for FlatLaf UI defaults.
+ *
+ * Allows loading of additional .properties files from addon JARs.
+ * {@link java.util.ServiceLoader} is used to load extensions of this class from addon JARs.
+ *
+ * If you extend this class in a addon JAR, you also have to add a text file named
+ * {@code META-INF/services/com.formdev.flatlaf.FlatDefaultsAddon}
+ * to the addon JAR. The file must contain a single line with the class name.
+ *
+ * See 'flatlaf-swingx' addon for an example
+ *
+ * @author Karl Tauber
+ */
+public abstract class FlatDefaultsAddon
+{
+	/**
+	 * Finds an addon .properties file for the given LaF class and returns
+	 * it as input stream. Or {@code null} if not found.
+	 */
+	public abstract InputStream getDefaults( Class<?> lafClass );
+}

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

@@ -24,6 +24,10 @@ package com.formdev.flatlaf;
 public class FlatIntelliJLaf
 	extends FlatLightLaf
 {
+	public static boolean install( ) {
+		return install( new FlatIntelliJLaf() );
+	}
+
 	@Override
 	public String getName() {
 		return "Flat IntelliJ";

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

@@ -17,19 +17,37 @@
 package com.formdev.flatlaf;
 
 import java.awt.Color;
+import java.awt.Component;
+import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.EventQueue;
 import java.awt.Font;
 import java.awt.Insets;
+import java.awt.KeyEventPostProcessor;
+import java.awt.KeyboardFocusManager;
 import java.awt.Toolkit;
+import java.awt.Window;
+import java.awt.event.KeyEvent;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Properties;
+import java.util.ServiceLoader;
 import java.util.function.Function;
+import javax.swing.AbstractButton;
+import javax.swing.JLabel;
+import javax.swing.JTabbedPane;
+import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIDefaults;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.UIDefaults.LazyValue;
 import javax.swing.plaf.ColorUIResource;
 import javax.swing.plaf.DimensionUIResource;
@@ -41,6 +59,7 @@ import com.formdev.flatlaf.ui.FlatEmptyBorder;
 import com.formdev.flatlaf.ui.FlatLineBorder;
 import com.formdev.flatlaf.util.ScaledNumber;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * The base class for all Flat LaFs.
@@ -50,6 +69,8 @@ import com.formdev.flatlaf.util.SystemInfo;
 public abstract class FlatLaf
 	extends BasicLookAndFeel
 {
+	private static final String TYPE_PREFIX = "{";
+	private static final String TYPE_PREFIX_END = "}";
 	private static final String VARIABLE_PREFIX = "@";
 	private static final String REF_PREFIX = VARIABLE_PREFIX + "@";
 	private static final String OPTIONAL_PREFIX = "?";
@@ -57,6 +78,22 @@ public abstract class FlatLaf
 
 	private BasicLookAndFeel base;
 
+	private String desktopPropertyName;
+	private PropertyChangeListener desktopPropertyListener;
+
+	private KeyEventPostProcessor mnemonicListener;
+	private static boolean altKeyPressed;
+
+	public static boolean install( LookAndFeel newLookAndFeel ) {
+		try {
+		    UIManager.setLookAndFeel( newLookAndFeel );
+		    return true;
+		} catch( Exception ex ) {
+		    System.err.println( "Failed to initialize look and feel " + newLookAndFeel.getClass().getName() );
+		    return false;
+		}
+	}
+
 	@Override
 	public String getID() {
 		return getName();
@@ -77,10 +114,49 @@ public abstract class FlatLaf
 		getBase().initialize();
 
 		super.initialize();
+
+		// add mnemonic listener
+		mnemonicListener = e -> {
+			if( e.getKeyCode() == KeyEvent.VK_ALT )
+				altKeyChanged( e.getID() == KeyEvent.KEY_PRESSED );
+			return false;
+		};
+		KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventPostProcessor( mnemonicListener );
+
+		// listen to desktop property changes to update UI if system font or scaling changes
+		if( SystemInfo.IS_WINDOWS ) {
+			// 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 ) {
+			// Linux/Gnome allows extra scaling and larger text:
+			//   Settings > Devices > Displays > Scale (100% or 200%)
+			//   Settings > Universal access > Large Text (off or on, 125%)
+			desktopPropertyName = "gnome.Xft/DPI";
+		}
+		if( desktopPropertyName != null ) {
+			desktopPropertyListener = e -> {
+				reSetLookAndFeel();
+			};
+			Toolkit.getDefaultToolkit().addPropertyChangeListener( desktopPropertyName, desktopPropertyListener );
+		}
 	}
 
 	@Override
 	public void uninitialize() {
+		// remove desktop property listener
+		if( desktopPropertyListener != null ) {
+			Toolkit.getDefaultToolkit().removePropertyChangeListener( desktopPropertyName, desktopPropertyListener );
+			desktopPropertyName = null;
+			desktopPropertyListener = null;
+		}
+
+		// remove mnemonic listener
+		if( mnemonicListener != null ) {
+			KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventPostProcessor( mnemonicListener );
+			mnemonicListener = null;
+		}
+
 		if( base != null )
 			base.uninitialize();
 
@@ -128,9 +204,17 @@ public abstract class FlatLaf
 		defaults.put( "Spinner.disabledBackground", control );
 		defaults.put( "Spinner.disabledForeground", control );
 
+		// remember MenuBarUI from Mac Aqua LaF if Mac screen menubar is enabled
+		boolean useScreenMenuBar = SystemInfo.IS_MAC && "true".equals( System.getProperty( "apple.laf.useScreenMenuBar" ) );
+		Object aquaMenuBarUI = useScreenMenuBar ? defaults.get( "MenuBarUI" ) : null;
+
 		initFonts( defaults );
 		loadDefaultsFromProperties( defaults );
 
+		// use Aqua MenuBarUI if Mac screen menubar is enabled
+		if( useScreenMenuBar )
+			defaults.put( "MenuBarUI", aquaMenuBarUI );
+
 		return defaults;
 	}
 
@@ -153,12 +237,15 @@ public abstract class FlatLaf
 			uiFont = (font instanceof FontUIResource) ? (FontUIResource) font : new FontUIResource( font );
 
 		} else if( SystemInfo.IS_LINUX ) {
-			System.err.println( "WARNING: FlatLaf is not yet tested on Linux!" );
+			Font font = LinuxFontPolicy.getFont();
+			uiFont = (font instanceof FontUIResource) ? (FontUIResource) font : new FontUIResource( font );
 		}
 
 		if( uiFont == null )
 			return;
 
+		uiFont = UIScale.applyCustomScaleFactor( uiFont );
+
 		// override fonts
 		for( Object key : defaults.keySet() ) {
 			if( key instanceof String && ((String)key).endsWith( ".font" ) )
@@ -189,12 +276,22 @@ public abstract class FlatLaf
 		try {
 			// load properties files
 			Properties properties = new Properties();
+			ServiceLoader<FlatDefaultsAddon> addonLoader = ServiceLoader.load( FlatDefaultsAddon.class );
 			for( Class<?> lafClass : lafClasses ) {
+				// load core properties
 				String propertiesName = "/" + lafClass.getName().replace( '.', '/' ) + ".properties";
 				try( InputStream in = lafClass.getResourceAsStream( propertiesName ) ) {
 					if( in != null )
 						properties.load( in );
 				}
+
+				// load properties from addons
+				for( FlatDefaultsAddon addon : addonLoader ) {
+					try( InputStream in = addon.getDefaults( lafClass ) ) {
+						if( in != null )
+							properties.load( in );
+					}
+				}
 			}
 
 			Function<String, String> resolver = value -> {
@@ -262,54 +359,76 @@ public abstract class FlatLaf
 		return resolveValue( properties, newValue );
 	}
 
+	private enum ValueType { UNKNOWN, STRING, INTEGER, BORDER, ICON, INSETS, SIZE, COLOR, SCALEDNUMBER }
+
 	private Object parseValue( String key, String value, Function<String, String> resolver ) {
 		value = value.trim();
 
 		// null, false, true
 		switch( value ) {
-			case "null":		return null;
+			case "null":	return null;
 			case "false":	return false;
-			case "true":		return true;
+			case "true":	return true;
 		}
 
-		// borders
-		if( key.endsWith( ".border" ) || key.endsWith( "Border" ) )
-			return parseBorder( value, resolver );
+		ValueType valueType = ValueType.UNKNOWN;
 
-		// icons
-		if( key.endsWith( ".icon" ) || key.endsWith( "Icon" ) )
-			return parseInstance( value );
+		// check whether value type is specified in the value
+		if( value.startsWith( TYPE_PREFIX ) ) {
+			int end = value.indexOf( TYPE_PREFIX_END );
+			if( end != -1 ) {
+				try {
+					String typeStr = value.substring( TYPE_PREFIX.length(), end );
+					valueType = ValueType.valueOf( typeStr.toUpperCase( Locale.ENGLISH ) );
 
-		// insets
-		if( key.endsWith( ".margin" ) || key.endsWith( ".padding" ) ||
-			key.endsWith( "Margins" ) || key.endsWith( "Insets" ) )
-			return parseInsets( value );
+					// remove type from value
+					value = value.substring( end + TYPE_PREFIX_END.length() );
+				} catch( IllegalArgumentException ex ) {
+					// ignore
+				}
+			}
+		}
 
-		// size
-		if( key.endsWith( "Size" ) && !key.equals( "SplitPane.dividerSize" ))
-			return parseSize( value );
+		// determine value type from key
+		if( valueType == ValueType.UNKNOWN ) {
+			if( key.endsWith( ".border" ) || key.endsWith( "Border" ) )
+				valueType = ValueType.BORDER;
+			else if( key.endsWith( ".icon" ) || key.endsWith( "Icon" ) )
+				valueType = ValueType.ICON;
+			else if( key.endsWith( ".margin" ) || key.endsWith( ".padding" ) ||
+					 key.endsWith( "Margins" ) || key.endsWith( "Insets" ) )
+				valueType = ValueType.INSETS;
+			else if( key.endsWith( "Size" ) )
+				valueType = ValueType.SIZE;
+			else if( key.endsWith( "Width" ) || key.endsWith( "Height" ) )
+				valueType = ValueType.INTEGER;
+		}
 
-		// scaled number
-		ScaledNumber scaledNumber = parseScaledNumber( key, value );
-		if( scaledNumber != null )
-			return scaledNumber;
+		// parse value
+		switch( valueType ) {
+			case STRING:		return value;
+			case INTEGER:		return parseInteger( value, true );
+			case BORDER:		return parseBorder( value, resolver );
+			case ICON:			return parseInstance( value );
+			case INSETS:		return parseInsets( value );
+			case SIZE:			return parseSize( value );
+			case COLOR:			return parseColor( value, true );
+			case SCALEDNUMBER:	return parseScaledNumber( value );
+			case UNKNOWN:
+			default:
+				// colors
+				ColorUIResource color = parseColor( value, false );
+				if( color != null )
+					return color;
 
-		// width, height
-		if( key.endsWith( "Width" ) || key.endsWith( "Height" ) )
-			return parseInteger( value, true );
+				// integer
+				Integer integer = parseInteger( value, false );
+				if( integer != null )
+					return integer;
 
-		// colors
-		ColorUIResource color = parseColor( value, false );
-		if( color != null )
-			return color;
-
-		// integer
-		Integer integer = parseInteger( value, false );
-		if( integer != null )
-			return integer;
-
-		// string
-		return value;
+				// string
+				return value;
+		}
 	}
 
 	private Object parseBorder( String value, Function<String, String> resolver ) {
@@ -399,10 +518,7 @@ public abstract class FlatLaf
 		return null;
 	}
 
-	private ScaledNumber parseScaledNumber( String key, String value ) {
-		if( !key.equals( "OptionPane.buttonMinimumWidth" ) )
-			return null; // not supported
-
+	private ScaledNumber parseScaledNumber( String value ) {
 		try {
 			return new ScaledNumber( Integer.parseInt( value ) );
 		} catch( NumberFormatException ex ) {
@@ -424,4 +540,90 @@ public abstract class FlatLaf
 
 		return strs;
 	}
+
+	private static void reSetLookAndFeel() {
+		EventQueue.invokeLater( () -> {
+			try {
+				// re-set current LaF
+				LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
+				UIManager.setLookAndFeel( lookAndFeel );
+
+				// must fire property change events ourself because old and new LaF are the same
+				PropertyChangeEvent e = new PropertyChangeEvent( UIManager.class, "lookAndFeel", lookAndFeel, lookAndFeel );
+				for( PropertyChangeListener l : UIManager.getPropertyChangeListeners() )
+					l.propertyChange( e );
+
+				// update UI
+				updateUI();
+			} catch( UnsupportedLookAndFeelException ex ) {
+				ex.printStackTrace();
+			}
+		} );
+	}
+
+	/**
+	 * Update UI of all application windows.
+	 * Invoke after changing LaF.
+	 */
+	public static void updateUI() {
+		for( Window w : Window.getWindows() )
+			SwingUtilities.updateComponentTreeUI( w );
+	}
+
+	public static boolean isShowMnemonics() {
+		return altKeyPressed || !UIManager.getBoolean( "Component.hideMnemonics" );
+	}
+
+	private static void altKeyChanged( boolean pressed ) {
+		if( pressed == altKeyPressed )
+			return;
+
+		altKeyPressed = pressed;
+
+		// check whether it is necessary to repaint
+		if( !UIManager.getBoolean( "Component.hideMnemonics" ) )
+			return;
+
+		// get focus owner
+		Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
+		if( focusOwner == null )
+			return;
+
+		// get focused window
+		Window window = SwingUtilities.windowForComponent( focusOwner );
+		if( window == null )
+			return;
+
+		// repaint components with mnemonics in focused window
+		repaintMnemonics( window );
+	}
+
+	private static void repaintMnemonics( Container container ) {
+		for( Component c : container.getComponents() ) {
+			if( hasMnemonic( c ) )
+				c.repaint();
+
+			if( c instanceof Container )
+				repaintMnemonics( (Container) c );
+		}
+	}
+
+	private static boolean hasMnemonic( Component c ) {
+		if( c instanceof JLabel && ((JLabel)c).getDisplayedMnemonicIndex() >= 0 )
+			return true;
+
+		if( c instanceof AbstractButton && ((AbstractButton)c).getDisplayedMnemonicIndex() >= 0 )
+			return true;
+
+		if( c instanceof JTabbedPane ) {
+			JTabbedPane tabPane = (JTabbedPane) c;
+			int tabCount = tabPane.getTabCount();
+			for( int i = 0; i < tabCount; i++ ) {
+				if( tabPane.getDisplayedMnemonicIndexAt( i ) >= 0 )
+					return true;
+			}
+		}
+
+		return false;
+	}
 }

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

@@ -24,6 +24,10 @@ package com.formdev.flatlaf;
 public class FlatLightLaf
 	extends FlatLaf
 {
+	public static boolean install( ) {
+		return install( new FlatLightLaf() );
+	}
+
 	@Override
 	public String getName() {
 		return "Flat Light";

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

@@ -0,0 +1,248 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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;
+
+import java.awt.Font;
+import java.awt.GraphicsEnvironment;
+import java.awt.Toolkit;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.StringTokenizer;
+import javax.swing.text.StyleContext;
+import com.formdev.flatlaf.util.SystemInfo;
+
+/**
+ * @author Karl Tauber
+ */
+class LinuxFontPolicy
+{
+	static Font getFont() {
+		return SystemInfo.IS_KDE ? getKDEFont() : getGnomeFont();
+	}
+
+	/**
+	 * Gets the default font for Gnome.
+	 */
+	private static Font getGnomeFont() {
+		// see class com.sun.java.swing.plaf.gtk.PangoFonts background information
+
+		Object fontName = Toolkit.getDefaultToolkit().getDesktopProperty( "gnome.Gtk/FontName" );
+		if( !(fontName instanceof String) )
+			fontName = "sans 10";
+
+		String family = "";
+		int style = Font.PLAIN;
+		int size = 10;
+
+		StringTokenizer st = new StringTokenizer( (String) fontName );
+		while( st.hasMoreTokens() ) {
+			String word = st.nextToken();
+
+			if( word.equalsIgnoreCase( "italic" ) )
+				style |= Font.ITALIC;
+			else if( word.equalsIgnoreCase( "bold" ) )
+				style |= Font.BOLD;
+			else if( Character.isDigit( word.charAt( 0 ) ) ) {
+				try {
+					size = Integer.parseInt( word );
+				} catch( NumberFormatException ex ) {
+					// ignore
+				}
+			} else
+				family = family.isEmpty() ? word : (family + ' ' + word);
+		}
+
+		// scale font size
+		double dsize = size * getGnomeFontScale();
+		size = (int) (dsize + 0.5);
+		if( size < 1 )
+			size = 1;
+
+		// handle logical font names
+		String logicalFamily = mapFcName( family.toLowerCase() );
+		if( logicalFamily != null )
+			family = logicalFamily;
+
+		return createFont( family, style, size, dsize );
+	}
+
+	private static Font createFont( String family, int style, int size, double dsize ) {
+		// using StyleContext.getFont() here because it uses
+		// sun.font.FontUtilities.getCompositeFontUIResource()
+		Font font = new StyleContext().getFont( family, style, size );
+
+		// set font size in floating points
+		font = font.deriveFont( style, (float) dsize );
+
+		return font;
+	}
+
+	private static double getGnomeFontScale() {
+		// see class com.sun.java.swing.plaf.gtk.PangoFonts background information
+
+		Object value = Toolkit.getDefaultToolkit().getDesktopProperty( "gnome.Xft/DPI" );
+		if( value instanceof Integer ) {
+			int dpi = ((Integer)value).intValue() / 1024;
+			if( dpi == -1 )
+				dpi = 96;
+			if( dpi < 50 )
+				dpi = 50;
+			return dpi / 72.0;
+		} else {
+			return GraphicsEnvironment.getLocalGraphicsEnvironment()
+				.getDefaultScreenDevice().getDefaultConfiguration()
+				.getNormalizingTransform().getScaleY();
+		}
+	}
+
+	/**
+	 * map GTK/fontconfig names to equivalent JDK logical font name
+	 */
+	private static String mapFcName( String name ) {
+		switch( name ) {
+			case "sans":		return "sansserif";
+			case "sans-serif":	return "sansserif";
+			case "serif":		return "serif";
+			case "monospace":	return "monospaced";
+		}
+		return null;
+	}
+
+	/**
+	 * Gets the default font for KDE for KDE configuration files.
+	 *
+	 * The Swing fonts are not updated when the user changes system font size
+	 * (System Settings > Fonts > Force Font DPI). A application restart is necessary.
+	 * This is the same behavior as in native KDE applications.
+	 *
+	 * The "display scale factor" (kdeglobals: [KScreen] > ScaleFactor) is not used
+	 * KDE also does not use it to calculate font size. Only forceFontDPI is used by KDE.
+	 * If user changes "display scale factor" (System Settings > Display and Monitors >
+	 * Displays > Scale Display), the forceFontDPI is also changed to reflect the scale factor.
+	 */
+	private static Font getKDEFont() {
+		List<String> kdeglobals = readConfig( "kdeglobals" );
+		List<String> kcmfonts = readConfig( "kcmfonts" );
+
+		String generalFont = getConfigEntry( kdeglobals, "General", "font" );
+		String forceFontDPI = getConfigEntry( kcmfonts, "General", "forceFontDPI" );
+
+		String family = "sansserif";
+		int style = Font.PLAIN;
+		int size = 10;
+
+		if( generalFont != null ) {
+			List<String> strs = FlatLaf.split( generalFont, ',' );
+			try {
+				family = strs.get( 0 );
+				size = Integer.parseInt( strs.get( 1 ) );
+				if( "75".equals( strs.get( 4 ) ) )
+					style |= Font.BOLD;
+				if( "1".equals( strs.get( 5 ) ) )
+					style |= Font.ITALIC;
+			} catch( RuntimeException ex ) {
+				ex.printStackTrace();
+			}
+		}
+
+		// font dpi
+		int dpi = 96;
+		if( forceFontDPI != null ) {
+			try {
+				dpi = Integer.parseInt( forceFontDPI );
+				if( dpi <= 0 )
+					dpi = 96;
+				if( dpi < 50 )
+					dpi = 50;
+			} catch( NumberFormatException ex ) {
+				ex.printStackTrace();
+			}
+		}
+
+		// scale font size
+		double fontScale = dpi / 72.0;
+		double dsize = size * fontScale;
+		size = (int) (dsize + 0.5);
+		if( size < 1 )
+			size = 1;
+
+		return createFont( family, style, size, dsize );
+	}
+
+	private static List<String> readConfig( String filename ) {
+		File userHome = new File( System.getProperty( "user.home" ) );
+
+		// search for config file
+		String[] configDirs = {
+			".config", // KDE 5
+			".kde4/share/config", // KDE 4
+			".kde/share/config"// KDE 3
+		};
+		File file = null;
+		for( String configDir : configDirs ) {
+			file = new File( userHome, configDir + "/" + filename );
+			if( file.isFile() )
+				break;
+		}
+		if( !file.isFile() )
+			return Collections.emptyList();
+
+		// read config file
+		ArrayList<String> lines = new ArrayList<>( 200 );
+		try( BufferedReader reader = new BufferedReader( new FileReader( file ) ) ) {
+			String line = null;
+			while( (line = reader.readLine()) != null )
+				lines.add( line );
+		} catch( IOException ex ) {
+			ex.printStackTrace();
+		}
+		return lines;
+	}
+
+	private static String getConfigEntry( List<String> config, String group, String key ) {
+		int groupLength = group.length();
+		int keyLength = key.length();
+		boolean inGroup = false;
+		for( String line : config ) {
+			if( !inGroup ) {
+				if( line.length() >= groupLength + 2 &&
+					line.charAt( 0 ) == '[' &&
+					line.charAt( groupLength + 1 ) == ']' &&
+					line.indexOf( group ) == 1 )
+				{
+					inGroup = true;
+				}
+			} else {
+				if( line.startsWith( "[" ) )
+					return null;
+
+				if( line.length() >= keyLength + 2 &&
+					line.charAt( keyLength ) == '=' &&
+					line.startsWith( key ) )
+				{
+					return line.substring( keyLength + 1 );
+				}
+			}
+		}
+		return null;
+	}
+}

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

@@ -16,9 +16,11 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.geom.Path2D;
 import javax.swing.JMenu;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
@@ -26,6 +28,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "arrow" icon for {@link javax.swing.JMenu}.
  *
+ * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Menu.icon.arrowColor				Color
  * @uiDefault Menu.icon.disabledArrowColor		Color
  * @uiDefault Menu.selectionForeground			Color
@@ -35,12 +38,13 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatMenuArrowIcon
 	extends FlatAbstractIcon
 {
+	protected final boolean chevron = "chevron".equals( 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" );
 
 	public FlatMenuArrowIcon() {
-		super( 5, 10, null );
+		super( 6, 10, null );
 	}
 
 	@Override
@@ -49,7 +53,15 @@ public class FlatMenuArrowIcon
 			g.rotate( Math.toRadians( 180 ), width / 2., height / 2. );
 
 		g.setColor( getArrowColor( c ) );
-		g.fill( FlatUIUtils.createPath( 0,0.5, 0,9.5, 5,5 ) );
+		if( chevron ) {
+			// chevron arrow
+			Path2D path = FlatUIUtils.createPath( false, 1,1, 5,5, 1,9 );
+			g.setStroke( new BasicStroke( 1f ) );
+			g.draw( path );
+		} else {
+			// triangle arrow
+			g.fill( FlatUIUtils.createPath( 0,0.5, 0,9.5, 5,5 ) );
+		}
 	}
 
 	private Color getArrowColor( Component c ) {

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

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
 import javax.swing.UIManager;
@@ -24,6 +25,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 /**
  * "collapsed" icon for {@link javax.swing.JTree}.
  *
+ * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Tree.icon.collapsedColor			Color
  *
  * @author Karl Tauber
@@ -31,15 +33,32 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatTreeCollapsedIcon
 	extends FlatAbstractIcon
 {
+	private final boolean chevron;
+
 	public FlatTreeCollapsedIcon() {
-		super( 11, 11, UIManager.getColor( "Tree.icon.collapsedColor" ) );
+		this( UIManager.getColor( "Tree.icon.collapsedColor" ) );
+	}
+
+	FlatTreeCollapsedIcon( Color color ) {
+		super( 11, 11, color );
+		chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
+		rotate( c, g );
+
+		if( chevron ) {
+			// chevron arrow
+			g.fill( FlatUIUtils.createPath( 3,1, 3,2.5, 6,5.5, 3,8.5, 3,10, 4.5,10, 9,5.5, 4.5,1 ) );
+		} else {
+			// triangle arrow
+			g.fill( FlatUIUtils.createPath( 2,1, 2,10, 10,5.5 ) );
+		}
+	}
+
+	void rotate( Component c, Graphics2D g ) {
 		if( !c.getComponentOrientation().isLeftToRight() )
 			g.rotate( Math.toRadians( 180 ), width / 2., height / 2. );
-
-		g.fill( FlatUIUtils.createPath( 2,1, 2,10, 10,5.5 ) );
 	}
 }

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

@@ -19,7 +19,6 @@ package com.formdev.flatlaf.icons;
 import java.awt.Component;
 import java.awt.Graphics2D;
 import javax.swing.UIManager;
-import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
  * "expanded" icon for {@link javax.swing.JTree}.
@@ -29,14 +28,14 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
  * @author Karl Tauber
  */
 public class FlatTreeExpandedIcon
-	extends FlatAbstractIcon
+	extends FlatTreeCollapsedIcon
 {
 	public FlatTreeExpandedIcon() {
-		super( 11, 11, UIManager.getColor( "Tree.icon.expandedColor" ) );
+		super( UIManager.getColor( "Tree.icon.expandedColor" ) );
 	}
 
 	@Override
-	protected void paintIcon( Component c, Graphics2D g ) {
-		g.fill( FlatUIUtils.createPath( 1,2, 10,2, 5.5,10 ) );
+	void rotate( Component c, Graphics2D g ) {
+		g.rotate( Math.toRadians( 90 ), width / 2., height / 2. );
 	}
 }

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

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
@@ -37,6 +38,7 @@ public class FlatArrowButton
 	extends BasicArrowButton
 	implements UIResource
 {
+	private final boolean chevron;
 	private final Color foreground;
 	private final Color disabledForeground;
 	private final Color hoverForeground;
@@ -47,11 +49,12 @@ public class FlatArrowButton
 
 	private boolean hover;
 
-	public FlatArrowButton( int direction, Color foreground, Color disabledForeground,
+	public FlatArrowButton( int direction, String type, Color foreground, Color disabledForeground,
 		Color hoverForeground, Color hoverBackground )
 	{
 		super( direction, Color.WHITE, Color.WHITE, Color.WHITE, Color.WHITE );
 
+		this.chevron = "chevron".equals( type );
 		this.foreground = foreground;
 		this.disabledForeground = disabledForeground;
 		this.hoverForeground = hoverForeground;
@@ -77,6 +80,10 @@ public class FlatArrowButton
 		}
 	}
 
+	protected boolean isHover() {
+		return hover;
+	}
+
 	public int getXOffset() {
 		return xOffset;
 	}
@@ -113,7 +120,7 @@ public class FlatArrowButton
 		boolean enabled = isEnabled();
 
 		// paint hover background
-		if( enabled && hover && hoverBackground != null ) {
+		if( enabled && isHover() && hoverBackground != null ) {
 			g.setColor( hoverBackground );
 			g.fillRect( 0, 0, width, height );
 		}
@@ -121,26 +128,41 @@ public class FlatArrowButton
 		int direction = getDirection();
 		boolean vert = (direction == NORTH || direction == SOUTH);
 
-		int w = scale( 9 );
-		int h = scale( 5 );
-		int x = Math.round( (width - (vert ? w : h)) / 2f + scale( (float) xOffset ) );
-		int y = Math.round( (height - (vert ? h : w)) / 2f + scale( (float) yOffset ) );
+		int w = scale( chevron ? 8 : 9 );
+		int h = scale( chevron ? 4 : 5 );
+		int rw = vert ? w : h;
+		int rh = vert ? h : w;
+		int x = Math.round( (width - rw) / 2f + scale( (float) xOffset ) );
+		int y = Math.round( (height - rh) / 2f + scale( (float) yOffset ) );
+
+		// optimization for small chevron arrows (e.g. OneTouchButtons in SplitPane)
+		if( x + rw >= width && x > 0 )
+			x--;
+		if( y + rh >= height && y > 0 )
+			y--;
 
 		// paint arrow
 		g.setColor( enabled
-			? (hover && hoverForeground != null ? hoverForeground : foreground)
+			? (isHover() && hoverForeground != null ? hoverForeground : foreground)
 			: disabledForeground );
 		g.translate( x, y );
-		g2.fill( createArrowShape( direction, w, h ) );
+		Shape arrowShape = createArrowShape( direction, chevron, w, h );
+		if( chevron ) {
+			g2.setStroke( new BasicStroke( scale( 1f ) ) );
+			g2.draw( arrowShape );
+		} else {
+			// triangle
+			g2.fill( arrowShape );
+		}
 		g.translate( -x, -y );
 	}
 
-	public static Shape createArrowShape( int direction, int w, int h ) {
+	public static Shape createArrowShape( int direction, boolean chevron, float w, float h ) {
 		switch( direction ) {
-			case NORTH:	return FlatUIUtils.createPath( 0,h, w,h, (w / 2f),0 );
-			case SOUTH:	return FlatUIUtils.createPath( 0,0, w,0, (w / 2f),h );
-			case WEST:	return FlatUIUtils.createPath( h,0, h,w, 0,(w / 2f) );
-			case EAST:	return FlatUIUtils.createPath( 0,0, 0,w, h,(w / 2f) );
+			case NORTH:	return FlatUIUtils.createPath( !chevron, 0,h, (w / 2f),0, w,h );
+			case SOUTH:	return FlatUIUtils.createPath( !chevron, 0,0, (w / 2f),h, w,0 );
+			case WEST:	return FlatUIUtils.createPath( !chevron, h,0, 0,(w / 2f), h,w );
+			case EAST:	return FlatUIUtils.createPath( !chevron, 0,0, h,(w / 2f), 0,w );
 			default:	return new Path2D.Float();
 		}
 	}

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

@@ -48,6 +48,7 @@ import javax.swing.text.JTextComponent;
  * {@link FlatUIUtils#paintParentBackground} to paint the empty space correctly.
  *
  * @uiDefault Component.focusWidth			int
+ * @uiDefault Component.innerFocusWidth		int
  * @uiDefault Component.focusColor			Color
  * @uiDefault Component.borderColor			Color
  * @uiDefault Component.disabledBorderColor	Color
@@ -59,6 +60,7 @@ public class FlatBorder
 	extends BasicBorders.MarginBorder
 {
 	protected final int focusWidth = UIManager.getInt( "Component.focusWidth" );
+	protected final int innerFocusWidth = UIManager.getInt( "Component.innerFocusWidth" );
 	protected final Color focusColor = UIManager.getColor( "Component.focusColor" );
 	protected final Color borderColor = UIManager.getColor( "Component.borderColor" );
 	protected final Color disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
@@ -70,17 +72,19 @@ public class FlatBorder
 		try {
 			FlatUIUtils.setRenderingHints( g2 );
 
-			float focusWidth = getFocusWidth();
-			float lineWidth = getLineWidth();
-			float arc = getArc();
+			boolean isCellEditor = FlatUIUtils.isTableCellEditor( c );
+			float focusWidth = isCellEditor ? 0 : getFocusWidth();
+			float borderWidth = getBorderWidth( c );
+			float arc = isCellEditor ? 0 : getArc();
 
 			if( isFocused( c ) ) {
 				g2.setColor( getFocusColor( c ) );
-				FlatUIUtils.paintOutlineBorder( g2, x, y, width, height, focusWidth, lineWidth, arc );
+				FlatUIUtils.paintOutlineBorder( g2, x, y, width, height, focusWidth,
+					getLineWidth() + scale( (float) innerFocusWidth ), arc );
 			}
 
 			g2.setPaint( getBorderColor( c ) );
-			FlatUIUtils.drawRoundRectangle( g2, x, y, width, height, focusWidth, lineWidth, arc );
+			FlatUIUtils.drawRoundRectangle( g2, x, y, width, height, focusWidth, borderWidth, arc );
 		} finally {
 			g2.dispose();
 		}
@@ -131,7 +135,8 @@ public class FlatBorder
 
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
-		float ow = getFocusWidth() + getLineWidth();
+		boolean isCellEditor = FlatUIUtils.isTableCellEditor( c );
+		float ow = (isCellEditor ? 0 : getFocusWidth()) + getLineWidth();
 
 		insets = super.getBorderInsets( c, insets );
 		insets.top = Math.round( scale( (float) insets.top ) + ow );
@@ -149,6 +154,10 @@ public class FlatBorder
 		return scale( 1f );
 	}
 
+	protected float getBorderWidth( Component c ) {
+		return getLineWidth();
+	}
+
 	protected float getArc() {
 		return 0;
 	}

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

@@ -20,8 +20,11 @@ import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics;
+import java.awt.Insets;
 import java.awt.Paint;
+import javax.swing.JButton;
 import javax.swing.UIManager;
+import javax.swing.plaf.UIResource;
 
 /**
  * Border for {@link javax.swing.JButton}.
@@ -34,6 +37,7 @@ import javax.swing.UIManager;
  * @uiDefault Button.default.hoverBorderColor	Color	optional
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
+ * @uiDefault Button.default.borderWidth		int
  * @uiDefault Button.arc						int
  *
  * @author Karl Tauber
@@ -49,6 +53,7 @@ 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 defaultBorderWidth = UIManager.getInt( "Button.default.borderWidth" );
 	protected final int arc = UIManager.getInt( "Button.arc" );
 
 	@Override
@@ -73,6 +78,22 @@ public class FlatButtonBorder
 			null );
 	}
 
+	@Override
+	public Insets getBorderInsets( Component c, Insets insets ) {
+		insets = super.getBorderInsets( c, insets );
+
+		// use smaller left and right insets for icon-only buttons (so that they are square)
+		if( FlatButtonUI.isIconOnlyButton( c ) && ((JButton)c).getMargin() instanceof UIResource )
+			insets.left = insets.right = Math.min( insets.top, insets.bottom );
+
+		return insets;
+	}
+
+	@Override
+	protected float getBorderWidth( Component c ) {
+		return FlatButtonUI.isDefaultButton( c ) ? scale( (float) defaultBorderWidth ) : super.getBorderWidth( c );
+	}
+
 	@Override
 	protected float getArc() {
 		return scale( (float) arc );

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

@@ -21,6 +21,7 @@ import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Dimension;
+import java.awt.Font;
 import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
@@ -35,7 +36,9 @@ import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicButtonUI;
+import com.formdev.flatlaf.FlatLaf;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JButton}.
@@ -55,6 +58,7 @@ import javax.swing.plaf.basic.BasicButtonUI;
  * @uiDefault Button.default.focusedBackground	Color	optional
  * @uiDefault Button.default.hoverBackground	Color	optional
  * @uiDefault Button.default.pressedBackground	Color	optional
+ * @uiDefault Button.default.boldText			boolean
  * @uiDefault Button.toolbar.hoverBackground	Color
  * @uiDefault Button.toolbar.pressedBackground	Color
  *
@@ -78,6 +82,7 @@ public class FlatButtonUI
 	protected Color defaultFocusedBackground;
 	protected Color defaultHoverBackground;
 	protected Color defaultPressedBackground;
+	protected boolean defaultBoldText;
 
 	protected Color toolbarHoverBackground;
 	protected Color toolbarPressedBackground;
@@ -116,6 +121,7 @@ public class FlatButtonUI
 			defaultFocusedBackground = UIManager.getColor( "Button.default.focusedBackground" );
 			defaultHoverBackground = UIManager.getColor( "Button.default.hoverBackground" );
 			defaultPressedBackground = UIManager.getColor( "Button.default.pressedBackground" );
+			defaultBoldText = UIManager.getBoolean( "Button.default.boldText" );
 
 			toolbarHoverBackground = UIManager.getColor( prefix + "toolbar.hoverBackground" );
 			toolbarPressedBackground = UIManager.getColor( prefix + "toolbar.pressedBackground" );
@@ -146,6 +152,13 @@ public class FlatButtonUI
 		return c instanceof JButton && ((JButton)c).isDefaultButton();
 	}
 
+	static boolean isIconOnlyButton( Component c ) {
+		String text;
+		return c instanceof JButton &&
+			((JButton)c).getIcon() != null &&
+			((text = ((JButton)c).getText()) == null || text.isEmpty());
+	}
+
 	static boolean isHelpButton( Component c ) {
 		return c instanceof JButton && clientPropertyEquals( (JButton) c, BUTTON_TYPE, BUTTON_TYPE_HELP );
 	}
@@ -191,12 +204,23 @@ public class FlatButtonUI
 		if( isHelpButton( b ) )
 			return;
 
+		if( defaultBoldText && isDefaultButton( b ) && b.getFont() instanceof UIResource ) {
+			Font boldFont = g.getFont().deriveFont( Font.BOLD );
+			g.setFont( boldFont );
+
+			int boldWidth = b.getFontMetrics( boldFont ).stringWidth( text );
+			if( boldWidth > textRect.width ) {
+				textRect.x -= (boldWidth - textRect.width) / 2;
+				textRect.width = boldWidth;
+			}
+		}
+
 		paintText( g, b, textRect, text, b.isEnabled() ? getForeground( b ) : disabledText );
 	}
 
-	static void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text, Color foreground ) {
+	public static void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text, Color foreground ) {
 		FontMetrics fm = b.getFontMetrics( b.getFont() );
-		int mnemonicIndex = b.getDisplayedMnemonicIndex();
+		int mnemonicIndex = FlatLaf.isShowMnemonics() ? b.getDisplayedMnemonicIndex() : -1;
 
 		g.setColor( foreground );
 		FlatUIUtils.drawStringUnderlineCharAt( b, g, text, mnemonicIndex,
@@ -259,8 +283,11 @@ public class FlatButtonUI
 			return new Dimension( helpButtonIcon.getIconWidth(), helpButtonIcon.getIconHeight() );
 
 		Dimension prefSize = super.getPreferredSize( c );
-		if( !isToolBarButton( c ) )
+
+		// apply minimum width, if not in toolbar and not a icon-only button
+		if( !isToolBarButton( c ) && !isIconOnlyButton( c ) )
 			prefSize.width = Math.max( prefSize.width, scale( minimumWidth + (focusWidth * 2) ) );
+
 		return prefSize;
 	}
 }

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

@@ -29,6 +29,7 @@ import java.awt.Rectangle;
 import java.awt.Shape;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
+import java.awt.event.MouseListener;
 import java.awt.geom.Rectangle2D;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
@@ -57,6 +58,7 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * @uiDefault Component.focusWidth				int
  * @uiDefault Component.arc						int
+ * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Component.borderColor				Color
  * @uiDefault Component.disabledBorderColor		Color
  * @uiDefault ComboBox.disabledBackground		Color
@@ -74,6 +76,7 @@ public class FlatComboBoxUI
 {
 	protected int focusWidth;
 	protected int arc;
+	protected String arrowType;
 	protected Color borderColor;
 	protected Color disabledBorderColor;
 
@@ -86,16 +89,42 @@ public class FlatComboBoxUI
 	protected Color buttonDisabledArrowColor;
 	protected Color buttonHoverArrowColor;
 
+	private MouseListener hoverListener;
+	private boolean hover;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatComboBoxUI();
 	}
 
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		hoverListener = new FlatUIUtils.HoverListener( null, h -> {
+			if( !comboBox.isEditable() ) {
+				hover = h;
+				if( arrowButton != null )
+					arrowButton.repaint();
+			}
+		} );
+		comboBox.addMouseListener( hoverListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		comboBox.removeMouseListener( hoverListener );
+		hoverListener = null;
+	}
+
 	@Override
 	protected void installDefaults() {
 		super.installDefaults();
 
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
 		arc = UIManager.getInt( "Component.arc" );
+		arrowType = UIManager.getString( "Component.arrowType" );
 		borderColor = UIManager.getColor( "Component.borderColor" );
 		disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
 
@@ -224,8 +253,14 @@ public class FlatComboBoxUI
 
 	@Override
 	protected JButton createArrowButton() {
-		return new FlatArrowButton( SwingConstants.SOUTH, buttonArrowColor,
-			buttonDisabledArrowColor, buttonHoverArrowColor, null );
+		return new FlatArrowButton( SwingConstants.SOUTH, arrowType, buttonArrowColor,
+			buttonDisabledArrowColor, buttonHoverArrowColor, null )
+		{
+			@Override
+			protected boolean isHover() {
+				return super.isHover() || (!comboBox.isEditable() ? hover : false);
+			}
+		};
 	}
 
 	@Override
@@ -333,7 +368,6 @@ public class FlatComboBoxUI
 	@SuppressWarnings( { "rawtypes", "unchecked" } )
 	private class FlatComboPopup
 		extends BasicComboPopup
-		implements ListCellRenderer
 	{
 		private CellPaddingBorder paddingBorder;
 
@@ -370,7 +404,7 @@ public class FlatComboBoxUI
 		protected void configureList() {
 			super.configureList();
 
-			list.setCellRenderer( this );
+			list.setCellRenderer( new PopupListCellRenderer() );
 		}
 
 		@Override
@@ -381,27 +415,33 @@ public class FlatComboBoxUI
 					super.propertyChange( e );
 
 					if( e.getPropertyName() == "renderer" )
-						list.setCellRenderer( FlatComboPopup.this );
+						list.setCellRenderer( new PopupListCellRenderer() );
 				}
 			};
 		}
 
-		@Override
-		public Component getListCellRendererComponent( JList list, Object value,
-			int index, boolean isSelected, boolean cellHasFocus )
+		//---- class PopupListCellRenderer -----
+
+		private class PopupListCellRenderer
+			implements ListCellRenderer
 		{
-			ListCellRenderer renderer = comboBox.getRenderer();
-			CellPaddingBorder.uninstall( renderer );
+			@Override
+			public Component getListCellRendererComponent( JList list, Object value,
+				int index, boolean isSelected, boolean cellHasFocus )
+			{
+				ListCellRenderer renderer = comboBox.getRenderer();
+				CellPaddingBorder.uninstall( renderer );
 
-			Component c = renderer.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus );
+				Component c = renderer.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus );
 
-			if( c instanceof JComponent ) {
-				if( paddingBorder == null )
-					paddingBorder = new CellPaddingBorder( padding );
-				paddingBorder.install( (JComponent) c );
+				if( c instanceof JComponent ) {
+					if( paddingBorder == null )
+						paddingBorder = new CellPaddingBorder( padding );
+					paddingBorder.install( (JComponent) c );
+				}
+
+				return c;
 			}
-
-			return c;
 		}
 	}
 

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

@@ -19,6 +19,7 @@ package com.formdev.flatlaf.ui;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Dimension;
 import javax.swing.JComponent;
+import javax.swing.JEditorPane;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicEditorPaneUI;
@@ -37,6 +38,8 @@ public class FlatEditorPaneUI
 {
 	protected int minimumWidth;
 
+	private Object oldHonorDisplayProperties;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatEditorPaneUI();
 	}
@@ -46,6 +49,17 @@ public class FlatEditorPaneUI
 		super.installDefaults();
 
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
+
+		// use component font and foreground for HTML text
+		oldHonorDisplayProperties = getComponent().getClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES );
+		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, true );
+	}
+
+	@Override
+	protected void uninstallDefaults() {
+		super.uninstallDefaults();
+
+		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, oldHonorDisplayProperties );
 	}
 
 	@Override

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

@@ -27,6 +27,7 @@ import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicLabelUI;
+import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -71,9 +72,16 @@ public class FlatLabelUI
 		defaults_initialized = false;
 	}
 
+	@Override
+	protected void paintEnabledText( JLabel l, Graphics g, String s, int textX, int textY ) {
+		int mnemIndex = FlatLaf.isShowMnemonics() ? l.getDisplayedMnemonicIndex() : -1;
+		g.setColor( l.getForeground() );
+		FlatUIUtils.drawStringUnderlineCharAt( l, g, s, mnemIndex, textX, textY );
+	}
+
 	@Override
 	protected void paintDisabledText( JLabel l, Graphics g, String s, int textX, int textY ) {
-		int mnemIndex = l.getDisplayedMnemonicIndex();
+		int mnemIndex = FlatLaf.isShowMnemonics() ? l.getDisplayedMnemonicIndex() : -1;
 		g.setColor( disabledForeground );
 		FlatUIUtils.drawStringUnderlineCharAt( l, g, s, mnemIndex, textX, textY );
 	}

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

@@ -23,6 +23,7 @@ import java.awt.GridBagConstraints;
 import javax.swing.JComponent;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicHTML;
 import javax.swing.plaf.basic.BasicOptionPaneUI;
 import com.formdev.flatlaf.util.UIScale;
 
@@ -122,6 +123,10 @@ public class FlatOptionPaneUI
 		if( messagePadding > 0 )
 			cons.insets.bottom = UIScale.scale( messagePadding );
 
+		// disable line wrapping for HTML
+		if( msg instanceof String && BasicHTML.isHTMLString( (String) msg ) )
+			maxll = Integer.MAX_VALUE;
+
 		super.addMessageComponents( container, cons, msg, maxll, internallyCreated );
 	}
 

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

@@ -116,15 +116,16 @@ public class FlatPasswordFieldUI
 
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
-		return applyMinimumWidth( super.getPreferredSize( c ) );
+		return applyMinimumWidth( super.getPreferredSize( c ), c );
 	}
 
 	@Override
 	public Dimension getMinimumSize( JComponent c ) {
-		return applyMinimumWidth( super.getMinimumSize( c ) );
+		return applyMinimumWidth( super.getMinimumSize( c ), c );
 	}
 
-	private Dimension applyMinimumWidth( Dimension size ) {
+	private Dimension applyMinimumWidth( Dimension size, JComponent c ) {
+		int focusWidth = (c.getBorder() instanceof FlatBorder) ? this.focusWidth : 0;
 		size.width = Math.max( size.width, scale( minimumWidth + (focusWidth * 2) ) );
 		return size;
 	}

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

@@ -48,6 +48,7 @@ import javax.swing.plaf.basic.BasicSpinnerUI;
  * @uiDefault Component.focusWidth				int
  * @uiDefault Component.arc						int
  * @uiDefault Component.minimumWidth			int
+ * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Component.borderColor				Color
  * @uiDefault Component.disabledBorderColor		Color
  * @uiDefault Spinner.disabledBackground		Color
@@ -68,6 +69,7 @@ public class FlatSpinnerUI
 	protected int focusWidth;
 	protected int arc;
 	protected int minimumWidth;
+	protected String arrowType;
 	protected Color borderColor;
 	protected Color disabledBorderColor;
 	protected Color disabledBackground;
@@ -89,6 +91,7 @@ public class FlatSpinnerUI
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
 		arc = UIManager.getInt( "Component.arc" );
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
+		arrowType = UIManager.getString( "Component.arrowType" );
 		borderColor = UIManager.getColor( "Component.borderColor" );
 		disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
 		disabledBackground = UIManager.getColor( "Spinner.disabledBackground" );
@@ -209,7 +212,7 @@ public class FlatSpinnerUI
 	}
 
 	private Component createArrowButton( int direction, String name ) {
-		FlatArrowButton button = new FlatArrowButton( direction, buttonArrowColor,
+		FlatArrowButton button = new FlatArrowButton( direction, arrowType, buttonArrowColor,
 			buttonDisabledArrowColor, buttonHoverArrowColor, null );
 		button.setName( name );
 		button.setYOffset( (direction == SwingConstants.NORTH) ? 1 : -1 );

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

@@ -31,6 +31,7 @@ import com.formdev.flatlaf.util.UIScale;
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JSplitPane}.
  *
+ * @uiDefault Component.arrowType						String	triangle (default) or chevron
  * @uiDefault SplitPane.background						Color
  * @uiDefault SplitPane.foreground						Color unused
  * @uiDefault SplitPane.dividerSize						int
@@ -46,6 +47,7 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatSplitPaneUI
 	extends BasicSplitPaneUI
 {
+	protected String arrowType;
 	private Boolean continuousLayout;
 	private Color oneTouchArrowColor;
 	private Color oneTouchHoverArrowColor;
@@ -56,6 +58,8 @@ public class FlatSplitPaneUI
 
 	@Override
 	protected void installDefaults() {
+		arrowType = UIManager.getString( "Component.arrowType" );
+
 		// get one-touch colors before invoking super.installDefaults() because they are
 		// used in there on LaF switching
 		oneTouchArrowColor = UIManager.getColor( "SplitPaneDivider.oneTouchArrowColor" );
@@ -108,7 +112,7 @@ public class FlatSplitPaneUI
 			private final boolean left;
 
 			public FlatOneTouchButton( boolean left ) {
-				super( SwingConstants.NORTH, oneTouchArrowColor, null, oneTouchHoverArrowColor, null );
+				super( SwingConstants.NORTH, arrowType, oneTouchArrowColor, null, oneTouchHoverArrowColor, null );
 				setCursor( Cursor.getPredefinedCursor( Cursor.DEFAULT_CURSOR ) );
 
 				this.left = left;

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

@@ -33,12 +33,14 @@ import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTabbedPaneUI;
 import javax.swing.text.View;
+import com.formdev.flatlaf.FlatLaf;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JTabbedPane}.
  *
  * @clientProperty JTabbedPane.hasFullBorder			boolean
  *
+ * @uiDefault Component.arrowType						String	triangle (default) or chevron
  * @uiDefault TabbedPane.font							Font
  * @uiDefault TabbedPane.background						Color
  * @uiDefault TabbedPane.foreground						Color
@@ -144,7 +146,8 @@ public class FlatTabbedPaneUI
 	@Override
 	protected JButton createScrollButton( int direction ) {
 		// this method is invoked before installDefaults(), so we can not use color fields here
-		return new FlatArrowButton( direction, UIManager.getColor("TabbedPane.shadow"),
+		return new FlatArrowButton( direction, UIManager.getString( "Component.arrowType" ),
+			UIManager.getColor( "TabbedPane.shadow" ),
 			UIManager.getColor( "TabbedPane.disabledForeground" ), null,
 			UIManager.getColor( "TabbedPane.hoverColor" ) );
 	}
@@ -261,7 +264,7 @@ public class FlatTabbedPaneUI
 		} else
 			color = disabledForeground;
 
-		int mnemIndex = tabPane.getDisplayedMnemonicIndexAt( tabIndex );
+		int mnemIndex = FlatLaf.isShowMnemonics() ? tabPane.getDisplayedMnemonicIndexAt( tabIndex ) : -1;
 
 		g.setColor( color );
 		FlatUIUtils.drawStringUnderlineCharAt( tabPane, g, title, mnemIndex,

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

@@ -128,6 +128,7 @@ public class FlatTextFieldUI
 			(parent != null && parent.getParent() instanceof JSpinner) )
 		  return size;
 
+		int focusWidth = (c.getBorder() instanceof FlatBorder) ? this.focusWidth : 0;
 		size.width = Math.max( size.width, scale( minimumWidth + (focusWidth * 2) ) );
 		return size;
 	}

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

@@ -19,6 +19,7 @@ package com.formdev.flatlaf.ui;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Dimension;
 import javax.swing.JComponent;
+import javax.swing.JEditorPane;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicTextPaneUI;
@@ -37,6 +38,8 @@ public class FlatTextPaneUI
 {
 	protected int minimumWidth;
 
+	private Object oldHonorDisplayProperties;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTextPaneUI();
 	}
@@ -46,6 +49,17 @@ public class FlatTextPaneUI
 		super.installDefaults();
 
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
+
+		// use component font and foreground for HTML text
+		oldHonorDisplayProperties = getComponent().getClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES );
+		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, true );
+	}
+
+	@Override
+	protected void uninstallDefaults() {
+		super.uninstallDefaults();
+
+		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, oldHonorDisplayProperties );
 	}
 
 	@Override

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

@@ -19,6 +19,8 @@ package com.formdev.flatlaf.ui;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Component;
 import java.awt.Insets;
+import java.awt.event.ContainerEvent;
+import java.awt.event.ContainerListener;
 import javax.swing.AbstractButton;
 import javax.swing.JComponent;
 import javax.swing.UIManager;
@@ -53,6 +55,29 @@ public class FlatToolBarUI
 		rolloverBorder = null;
 	}
 
+	@Override
+	protected ContainerListener createToolBarContListener() {
+		return new ToolBarContListener() {
+			@Override
+			public void componentAdded( ContainerEvent e ) {
+				super.componentAdded( e );
+
+				Component c = e.getChild();
+				if( c instanceof AbstractButton )
+					c.setFocusable( false );
+			}
+
+			@Override
+			public void componentRemoved( ContainerEvent e ) {
+				super.componentRemoved( e );
+
+				Component c = e.getChild();
+				if( c instanceof AbstractButton )
+					c.setFocusable( true );
+			}
+		};
+	}
+
 	@Override
 	protected Border createRolloverBorder() {
 		return getRolloverBorder();

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

@@ -17,7 +17,9 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Component;
 import java.awt.Container;
+import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
@@ -61,6 +63,12 @@ public class FlatUIUtils
 			r.height - insets.top - insets.bottom );
 	}
 
+	public static Dimension addInsets( Dimension dim, Insets insets ) {
+		return new Dimension(
+			dim.width + insets.left + insets.right,
+			dim.height + insets.top + insets.bottom );
+	}
+
 	public static Color getUIColor( String key, int defaultColorRGB ) {
 		Color color = UIManager.getColor( key );
 		return (color != null) ? color : new Color( defaultColorRGB );
@@ -80,6 +88,10 @@ public class FlatUIUtils
 		return (c instanceof ColorUIResource) ? new Color( c.getRGB(), true ) : c;
 	}
 
+	public static boolean isTableCellEditor( Component c ) {
+		return c instanceof JComponent && Boolean.TRUE.equals( ((JComponent)c).getClientProperty( "JComboBox.isTableCellEditor" ) );
+	}
+
 	/**
 	 * Sets rendering hints used for painting.
 	 */
@@ -160,32 +172,68 @@ public class FlatUIUtils
 	}
 
 	private static Shape createOutlinePath( float x, float y, float width, float height, float arc ) {
-		if( arc <= 0 )
+		return createRoundRectanglePath( x, y, width, height, arc, arc, arc, arc );
+	}
+
+	/**
+	 * Creates a not-filled rounded rectangle shape and allows specifying the line width and the radius or each corner.
+	 */
+	public static Path2D createRoundRectangle( float x, float y, float width, float height,
+		float lineWidth, float arcTopLeft, float arcTopRight, float arcBottomLeft, float arcBottomRight )
+	{
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		path.append( createRoundRectanglePath( x, y, width, height, arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight ), false );
+		path.append( createRoundRectanglePath( x + lineWidth, y + lineWidth, width - (lineWidth * 2), height - (lineWidth * 2),
+			arcTopLeft - lineWidth, arcTopRight - lineWidth, arcBottomLeft - lineWidth, arcBottomRight - lineWidth ), false );
+		return path;
+	}
+
+	/**
+	 * Creates a filled rounded rectangle shape and allows specifying the radius or each corner.
+	 */
+	public static Shape createRoundRectanglePath( float x, float y, float width, float height,
+		float arcTopLeft, float arcTopRight, float arcBottomLeft, float arcBottomRight )
+	{
+		if( arcTopLeft <= 0 && arcTopRight <= 0 && arcBottomLeft <= 0 && arcBottomRight <= 0 )
 			return new Rectangle2D.Float( x, y, width, height );
 
+		if( arcTopLeft < 0 )
+			arcTopLeft = 0;
+		if( arcTopRight < 0 )
+			arcTopRight = 0;
+		if( arcBottomLeft < 0 )
+			arcBottomLeft = 0;
+		if( arcBottomRight < 0 )
+			arcBottomRight = 0;
+
 		float x2 = x + width;
 		float y2 = y + height;
 
 		Path2D rect = new Path2D.Float();
-		rect.moveTo( x2 - arc, y );
-		rect.quadTo( x2, y, x2, y + arc );
-		rect.lineTo( x2, y2 - arc );
-		rect.quadTo( x2, y2, x2 - arc, y2 );
-		rect.lineTo( x + arc, y2 );
-		rect.quadTo( x, y2, x, y2 - arc );
-		rect.lineTo( x, y + arc );
-		rect.quadTo( x, y, x + arc, y );
+		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.closePath();
 
 		return rect;
 	}
 
 	public static Path2D createPath( double... points ) {
+		return createPath( true, points );
+	}
+
+	public static Path2D createPath( boolean close, double... points ) {
 		Path2D path = new Path2D.Float();
 		path.moveTo( points[0], points[1] );
 		for( int i = 2; i < points.length; i += 2 )
 			path.lineTo( points[i], points[i + 1] );
-		path.closePath();
+		if( close )
+			path.closePath();
 		return path;
 	}
 

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

@@ -40,6 +40,9 @@ public class SystemInfo
 	// Java VMs
 	public static final boolean IS_JETBRAINS_JVM;
 
+	// UI toolkits
+	public static final boolean IS_KDE;
+
 	static {
 		// platforms
 		String osName = System.getProperty( "os.name" ).toLowerCase( Locale.ENGLISH );
@@ -58,6 +61,9 @@ public class SystemInfo
 		// Java VMs
 		IS_JETBRAINS_JVM = System.getProperty( "java.vm.vendor", "Unknown" )
 			.toLowerCase( Locale.ENGLISH ).contains( "jetbrains" );
+
+		// UI toolkits
+		IS_KDE = (IS_LINUX && System.getenv( "KDE_FULL_SESSION" ) != null);
 	}
 
 	private static long scanVersion( String version ) {

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

@@ -28,6 +28,7 @@ import java.lang.reflect.Method;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
 import javax.swing.plaf.DimensionUIResource;
+import javax.swing.plaf.FontUIResource;
 import javax.swing.plaf.InsetsUIResource;
 import javax.swing.plaf.UIResource;
 
@@ -47,8 +48,7 @@ import javax.swing.plaf.UIResource;
  *
  * 2) user scaling mode
  *
- * This mode is for Java 8 compatibility and can be removed when changing minimum
- * required Java version to 9.
+ * This mode is mainly for Java 8 compatibility, but is also used on Linux.
  * The user scale factor is computed based on the used font.
  * The JRE does not scale anything.
  * So we have to invoke {@link #scale(float)} where necessary.
@@ -65,7 +65,7 @@ public class UIScale
 
 	private static Boolean jreHiDPI;
 
-	private static boolean isJreHiDPIEnabled() {
+	public static boolean isSystemScalingEnabled() {
 		if( jreHiDPI != null )
 			return jreHiDPI;
 
@@ -93,19 +93,24 @@ public class UIScale
 	}
 
 	public static double getSystemScaleFactor( Graphics2D g ) {
-		return isJreHiDPIEnabled() ? g.getDeviceConfiguration().getDefaultTransform().getScaleX() : 1;
+		return isSystemScalingEnabled() ? g.getDeviceConfiguration().getDefaultTransform().getScaleX() : 1;
 	}
 
 	public static double getSystemScaleFactor( GraphicsConfiguration gc ) {
-		return isJreHiDPIEnabled() ? gc.getDefaultTransform().getScaleX() : 1;
+		return isSystemScalingEnabled() ? gc.getDefaultTransform().getScaleX() : 1;
 	}
 
 	//---- user scaling (Java 8) ----------------------------------------------
 
 	private static float scaleFactor = 1;
+	private static boolean initialized;
 
-	static {
-		if( isEnabled() ) {
+	private static void initialize() {
+		if( initialized )
+			return;
+		initialized = true;
+
+		if( isUserScalingEnabled() ) {
 			// listener to update scale factor if LaF changed or if Label.font changed
 			// (e.g. option "Override default fonts" in IntelliJ IDEA)
 			PropertyChangeListener listener = new PropertyChangeListener() {
@@ -129,7 +134,7 @@ public class UIScale
 	}
 
 	private static void updateScaleFactor() {
-		if( !isEnabled() )
+		if( !isUserScalingEnabled() )
 			return;
 
 		// use font size to calculate scale factor (instead of DPI)
@@ -138,6 +143,10 @@ public class UIScale
 		// (e.g. can avoid large icons with small text)
 		Font font = UIManager.getFont( "Label.font" );
 
+		setUserScaleFactor( computeScaleFactor( font ) );
+	}
+
+	private static float computeScaleFactor( Font font ) {
 		// default font size
 		float fontSizeDivider = 12f;
 
@@ -148,15 +157,15 @@ public class UIScale
 			if( "Tahoma".equals( font.getFamily() ) )
 				fontSizeDivider = 11f;
 		} else if( SystemInfo.IS_LINUX ) {
-			// default font size for Unity and Gnome is 15
-			fontSizeDivider = 15f;
+			// default font size for Unity and Gnome is 15 and for KDE it is 13
+			fontSizeDivider = SystemInfo.IS_KDE ? 13f : 15f;
 		}
 
-		setUserScaleFactor( font.getSize() / fontSizeDivider );
+		return font.getSize() / fontSizeDivider;
 	}
 
-	private static boolean isEnabled() {
-		if( isJreHiDPIEnabled() )
+	private static boolean isUserScalingEnabled() {
+		if( isSystemScalingEnabled() && !SystemInfo.IS_LINUX )
 			return false; // disable user scaling if JRE scales
 
 		// same as in IntelliJ IDEA
@@ -164,7 +173,58 @@ public class UIScale
 		return (hidpi != null) ? Boolean.parseBoolean( hidpi ) : true;
 	}
 
+	/**
+	 * Applies a custom scale factor given in system properties "flatlaf.uiScale"
+	 * or "sun.java2d.uiScale" to the given font.
+	 */
+	public static FontUIResource applyCustomScaleFactor( FontUIResource font ) {
+		if( UIScale.isSystemScalingEnabled() )
+			return font;
+
+		String uiScale = System.getProperty( "flatlaf.uiScale" );
+		if( uiScale == null )
+			uiScale = System.getProperty( "sun.java2d.uiScale" );
+
+		float scaleFactor = parseScaleFactor( uiScale );
+		if( scaleFactor <= 0 )
+			return font;
+
+		float fontScaleFactor = computeScaleFactor( font );
+		if( scaleFactor == fontScaleFactor )
+			return font;
+
+		int newFontSize = Math.round( (font.getSize() / fontScaleFactor) * scaleFactor );
+		return new FontUIResource( font.getFamily(), font.getStyle(), newFontSize );
+	}
+
+	/**
+	 * Similar to sun.java2d.SunGraphicsEnvironment.getScaleFactor(String)
+	 */
+	private static float parseScaleFactor( String s ) {
+		if( s == null )
+			return -1;
+
+		float units = 1;
+		if( s.endsWith( "x" ) )
+			s = s.substring( 0, s.length() - 1 );
+		else if( s.endsWith( "dpi" ) ) {
+			units = 96;
+			s = s.substring( 0, s.length() - 3 );
+		} else if( s.endsWith( "%" ) ) {
+			units = 100;
+			s = s.substring( 0, s.length() - 1 );
+		}
+
+		try {
+			float scale = Float.parseFloat( s );
+			return scale > 0 ? scale / units : -1;
+		} catch( NumberFormatException ex ) {
+			return -1;
+		}
+	}
+
 	public static float getUserScaleFactor() {
+		initialize();
 		return scaleFactor;
 	}
 
@@ -181,10 +241,12 @@ public class UIScale
 	}
 
 	public static float scale( float value ) {
+		initialize();
 		return (scaleFactor == 1) ? value : (value * scaleFactor);
 	}
 
 	public static int scale( int value ) {
+		initialize();
 		return (scaleFactor == 1) ? value : Math.round( value * scaleFactor );
 	}
 
@@ -192,23 +254,28 @@ public class UIScale
 	 * Similar as scale(int) but always "rounds down".
 	 */
 	public static int scale2( int value ) {
+		initialize();
 		return (scaleFactor == 1) ? value : (int) (value * scaleFactor);
 	}
 
 	public static float unscale( float value ) {
+		initialize();
 		return (scaleFactor == 1f) ? value : (value / scaleFactor);
 	}
 
 	public static int unscale( int value ) {
+		initialize();
 		return (scaleFactor == 1f) ? value : Math.round( value / scaleFactor );
 	}
 
 	public static void scaleGraphics( Graphics2D g ) {
+		initialize();
 		if( scaleFactor != 1f )
 			g.scale( scaleFactor, scaleFactor );
 	}
 
 	public static Dimension scale( Dimension dimension ) {
+		initialize();
 		return (dimension == null || scaleFactor == 1f)
 			? dimension
 			: (dimension instanceof UIResource
@@ -217,6 +284,7 @@ public class UIScale
 	}
 
 	public static Insets scale( Insets insets ) {
+		initialize();
 		return (insets == null || scaleFactor == 1f)
 			? insets
 			: (insets instanceof UIResource

flatlaf-core/src/main/module-info/module-info.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.
+ */
+
+/**
+ * @author Karl Tauber
+ */
+module com.formdev.flatlaf {
+	requires java.desktop;
+
+	exports com.formdev.flatlaf;
+	exports com.formdev.flatlaf.icons;
+	exports com.formdev.flatlaf.ui;
+	exports com.formdev.flatlaf.util;
+}

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

@@ -18,9 +18,16 @@
 # which is licensed under the Apache 2.0 license. Copyright 2000-2019 JetBrains s.r.o.
 # See: https://github.com/JetBrains/intellij-community/
 
+#---- Button ----
+
+Button.default.boldText=true
+
+
 #---- Component ----
 
 Component.focusWidth=2
+Component.innerFocusWidth=0
+Component.arrowType=triangle
 
 
 #---- RadioButton ----

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

@@ -79,6 +79,7 @@ Button.default.borderColor=4c708c
 Button.default.hoverBorderColor=537699
 Button.default.focusedBorderColor=537699
 Button.default.focusColor=43688c
+Button.default.boldText=true
 
 Button.toolbar.hoverBackground=4c5052
 Button.toolbar.pressedBackground=555a5d
@@ -226,7 +227,8 @@ ToggleButton.toolbar.selectedBackground=5c6164
 
 #---- ToolTip ----
 
-ToolTip.background=4b4d4d
+ToolTip.border=4,6,4,6
+ToolTip.background=1e2123
 
 
 #---- Tree ----

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

@@ -22,6 +22,17 @@
 
 Button.focusedBackground=null
 
+Button.default.background=4A86C7
+Button.default.foreground=f0f0f0
+Button.default.focusedBackground=null
+Button.default.hoverBackground=5B91CC
+Button.default.pressedBackground=6E9ED2
+Button.default.borderColor=3167ad
+Button.default.hoverBorderColor=a8cef6
+Button.default.focusedBorderColor=a8cef6
+Button.default.focusColor=97c3f3
+Button.default.boldText=true
+
 
 #---- CheckBox ----
 
@@ -37,6 +48,8 @@ CheckBox.icon.selectedPressedBackground=72A1D4
 #---- Component ----
 
 Component.focusWidth=2
+Component.innerFocusWidth=0
+Component.arrowType=triangle
 
 
 #---- RadioButton ----

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

@@ -70,6 +70,8 @@ Button.iconTextGap=4
 Button.rollover=true
 Button.defaultButtonFollowsFocus=false
 
+Button.default.borderWidth=1
+
 
 #---- CheckBox ----
 
@@ -103,8 +105,11 @@ ComboBox.padding=2,6,2,6
 #---- Component ----
 
 Component.focusWidth=0
+Component.innerFocusWidth=0
 Component.arc=5
 Component.minimumWidth=64
+Component.arrowType=chevron
+Component.hideMnemonics=true
 
 
 #---- EditorPane ----
@@ -207,7 +212,7 @@ OptionPane.maxCharactersPerLine=80
 OptionPane.iconMessageGap=16
 OptionPane.messagePadding=3
 OptionPane.buttonPadding=8
-OptionPane.buttonMinimumWidth=72
+OptionPane.buttonMinimumWidth={scaledNumber}72
 OptionPane.sameSizeButtons=true
 OptionPane.setButtonMargin=false
 OptionPane.buttonOrientation=4
@@ -302,10 +307,12 @@ Spinner.editorBorderPainted=false
 
 #---- SplitPane ----
 
-SplitPane.dividerSize=5
+SplitPane.dividerSize={integer}5
 SplitPane.continuousLayout=true
 SplitPane.border=null
 SplitPane.centerOneTouchButtons=true
+SplitPane.oneTouchButtonSize={scaledNumber}6
+SplitPane.oneTouchButtonOffset={scaledNumber}2
 
 SplitPaneDivider.border=null
 SplitPaneDivider.oneTouchArrowColor=@@ComboBox.buttonArrowColor
@@ -402,7 +409,9 @@ ToolBar.separatorColor=@@Separator.foreground
 
 #---- ToolTip ----
 
-ToolTip.border=2,6,2,6,@@Component.borderColor
+ToolTip.borderInactive=null
+ToolTip.backgroundInactive=@@ToolTip.background
+ToolTip.foregroundInactive=@disabledText
 
 
 #---- Tree ----

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

@@ -72,14 +72,16 @@ Button.disabledBorderColor=cfcfcf
 Button.focusedBorderColor=87afda
 Button.hoverBorderColor=@@Button.focusedBorderColor
 
-Button.default.background=4A86C7
-Button.default.foreground=f0f0f0
-Button.default.hoverBackground=5B91CC
-Button.default.pressedBackground=6E9ED2
-Button.default.borderColor=3167ad
-Button.default.hoverBorderColor=a8cef6
-Button.default.focusedBorderColor=a8cef6
-Button.default.focusColor=97c3f3
+Button.default.background=@@Button.background
+Button.default.foreground=@foreground
+Button.default.focusedBackground=@@Button.focusedBackground
+Button.default.hoverBackground=@@Button.hoverBackground
+Button.default.pressedBackground=@@Button.pressedBackground
+Button.default.borderColor=4D89C9
+Button.default.hoverBorderColor=@@Button.hoverBorderColor
+Button.default.focusedBorderColor=@@Button.focusedBorderColor
+Button.default.focusColor=@@Component.focusColor
+Button.default.borderWidth=2
 
 Button.toolbar.hoverBackground=dfdfdf
 Button.toolbar.pressedBackground=d8d8d8
@@ -232,7 +234,8 @@ ToggleButton.toolbar.selectedBackground=cfcfcf
 
 #---- ToolTip ----
 
-ToolTip.background=f7f7f7
+ToolTip.border=4,6,4,6,@@Component.borderColor
+ToolTip.background=fafafa
 
 
 #---- Tree ----

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatComponentsTest.java

@@ -55,6 +55,7 @@ public class FlatComponentsTest
 		FlatComponentsTest.TestDefaultButton button5 = new FlatComponentsTest.TestDefaultButton();
 		JButton button3 = new JButton();
 		JButton button12 = new JButton();
+		JButton button13 = new JButton();
 		JLabel toggleButtonLabel = new JLabel();
 		JToggleButton toggleButton1 = new JToggleButton();
 		JToggleButton toggleButton2 = new JToggleButton();
@@ -142,7 +143,14 @@ public class FlatComponentsTest
 		JToggleButton toggleButton7 = new JToggleButton();
 		JLabel scrollBarLabel = new JLabel();
 		JScrollBar scrollBar1 = new JScrollBar();
+		JLabel label4 = new JLabel();
 		JScrollBar scrollBar4 = new JScrollBar();
+		JPanel panel3 = new JPanel();
+		JLabel label3 = new JLabel();
+		JScrollPane scrollPane15 = new JScrollPane();
+		JEditorPane editorPane6 = new JEditorPane();
+		JScrollPane scrollPane16 = new JScrollPane();
+		JTextPane textPane6 = new JTextPane();
 		JLabel separatorLabel = new JLabel();
 		JSeparator separator1 = new JSeparator();
 		JPanel panel2 = new JPanel();
@@ -222,12 +230,14 @@ public class FlatComponentsTest
 		//---- button1 ----
 		button1.setText("enabled");
 		button1.setDisplayedMnemonicIndex(0);
+		button1.setToolTipText("This button is enabled.");
 		add(button1, "cell 1 1");
 
 		//---- button2 ----
 		button2.setText("disabled");
 		button2.setDisplayedMnemonicIndex(0);
 		button2.setEnabled(false);
+		button2.setToolTipText("This button is disabled.");
 		add(button2, "cell 2 1");
 
 		//---- button5 ----
@@ -246,6 +256,10 @@ public class FlatComponentsTest
 		button12.setEnabled(false);
 		add(button12, "cell 4 1");
 
+		//---- button13 ----
+		button13.setIcon(UIManager.getIcon("Tree.closedIcon"));
+		add(button13, "cell 5 1");
+
 		//---- toggleButtonLabel ----
 		toggleButtonLabel.setText("JToggleButton:");
 		add(toggleButtonLabel, "cell 0 2");
@@ -714,11 +728,52 @@ public class FlatComponentsTest
 		scrollBar1.setOrientation(Adjustable.HORIZONTAL);
 		add(scrollBar1, "cell 1 14,growx");
 
+		//---- label4 ----
+		label4.setText("HTML:");
+		add(label4, "cell 5 14");
+
 		//---- scrollBar4 ----
 		scrollBar4.setOrientation(Adjustable.HORIZONTAL);
 		scrollBar4.setEnabled(false);
 		add(scrollBar4, "cell 1 15,growx");
 
+		//======== panel3 ========
+		{
+			panel3.setLayout(new MigLayout(
+				"insets 0,hidemode 3,gap 5 5,ltr",
+				// columns
+				"[]",
+				// rows
+				"[]" +
+				"[]" +
+				"[]"));
+
+			//---- label3 ----
+			label3.setText("<html>JLabel HTML<br>Sample <b>content</b><br> <u>text</u></html>");
+			panel3.add(label3, "cell 0 0");
+
+			//======== scrollPane15 ========
+			{
+
+				//---- editorPane6 ----
+				editorPane6.setContentType("text/html");
+				editorPane6.setText("JEditorPane HTML<br>Sample <b>content</b><br> <u>text</u>");
+				scrollPane15.setViewportView(editorPane6);
+			}
+			panel3.add(scrollPane15, "cell 0 1,grow");
+
+			//======== scrollPane16 ========
+			{
+
+				//---- textPane6 ----
+				textPane6.setContentType("text/html");
+				textPane6.setText("JTextPane HTML<br>Sample <b>content</b><br> <u>text</u>");
+				scrollPane16.setViewportView(textPane6);
+			}
+			panel3.add(scrollPane16, "cell 0 2,grow");
+		}
+		add(panel3, "cell 5 15 1 7,aligny top,grow 100 0");
+
 		//---- separatorLabel ----
 		separatorLabel.setText("JSeparator:");
 		add(separatorLabel, "cell 0 16");

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatComponentsTest.jfd

@@ -43,6 +43,7 @@ new FormModel {
 				name: "button1"
 				"text": "enabled"
 				"displayedMnemonicIndex": 0
+				"toolTipText": "This button is enabled."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 1"
 			} )
@@ -51,6 +52,7 @@ new FormModel {
 				"text": "disabled"
 				"displayedMnemonicIndex": 0
 				"enabled": false
+				"toolTipText": "This button is disabled."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 2 1"
 			} )
@@ -76,6 +78,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 1"
 			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "button13"
+				"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 1"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toggleButtonLabel"
 				"text": "JToggleButton:"
@@ -672,6 +680,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 14,growx"
 			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label4"
+				"text": "HTML:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 14"
+			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar4"
 				"orientation": 0
@@ -679,6 +693,41 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 15,growx"
 			} )
+			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+				"$columnConstraints": "[]"
+				"$rowConstraints": "[][][]"
+				"$layoutConstraints": "insets 0,hidemode 3,gap 5 5,ltr"
+			} ) {
+				name: "panel3"
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "label3"
+					"text": "<html>JLabel HTML<br>Sample <b>content</b><br> <u>text</u></html>"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
+				add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
+					name: "scrollPane15"
+					add( new FormComponent( "javax.swing.JEditorPane" ) {
+						name: "editorPane6"
+						"contentType": "text/html"
+						"text": "JEditorPane HTML<br>Sample <b>content</b><br> <u>text</u>"
+					} )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1,grow"
+				} )
+				add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
+					name: "scrollPane16"
+					add( new FormComponent( "javax.swing.JTextPane" ) {
+						name: "textPane6"
+						"contentType": "text/html"
+						"text": "JTextPane HTML<br>Sample <b>content</b><br> <u>text</u>"
+					} )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 2,grow"
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 15 1 7,aligny top,grow 100 0"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "separatorLabel"
 				"text": "JSeparator:"
@@ -831,7 +880,7 @@ new FormModel {
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 790, 715 )
+			"size": new java.awt.Dimension( 790, 750 )
 		} )
 	}
 }

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatInspector.java

@@ -23,6 +23,7 @@ import java.awt.Dimension;
 import java.awt.EventQueue;
 import java.awt.Font;
 import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.event.MouseEvent;
@@ -41,6 +42,7 @@ import javax.swing.border.LineBorder;
 import javax.swing.plaf.UIResource;
 import javax.swing.text.JTextComponent;
 import com.formdev.flatlaf.ui.FlatToolTipUI;
+import com.formdev.flatlaf.ui.FlatUIUtils;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -103,7 +105,7 @@ public class FlatInspector
 	private void inspect( int x, int y ) {
 		Container contentPane = rootPane.getContentPane();
 		Component c = SwingUtilities.getDeepestComponentAt( contentPane, x, y );
-		if( c == contentPane || c.getParent() == contentPane )
+		if( c == contentPane || (c != null && c.getParent() == contentPane) )
 			c = null;
 
 		if( c == lastComponent )
@@ -137,6 +139,12 @@ public class FlatInspector
 				g.setColor( getBackground() );
 				g.fillRect( 0, 0, getWidth(), getHeight() );
 			}
+
+			@Override
+			protected void paintBorder( Graphics g ) {
+				FlatUIUtils.setRenderingHints( (Graphics2D) g );
+				super.paintBorder( g );
+			}
 		};
 		c.setBackground( new Color( 255, 0, 0, 32 ) );
 		c.setBorder( new LineBorder( Color.red ) );
@@ -228,6 +236,9 @@ public class FlatInspector
 			}
 		}
 
+		text += "Enabled: " + c.isEnabled() + '\n';
+		text += "Opaque: " + c.isOpaque() + '\n';
+		text += "Focusable: " + c.isFocusable() + '\n';
 		text += "Parent: " + c.getParent().getClass().getName();
 
 		return text;

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatOptionPaneTest.java

@@ -201,7 +201,7 @@ public class FlatOptionPaneTest
 			//---- warningOptionPane ----
 			warningOptionPane.setMessageType(JOptionPane.WARNING_MESSAGE);
 			warningOptionPane.setOptionType(JOptionPane.OK_CANCEL_OPTION);
-			warningOptionPane.setMessage("Beware of the dog!");
+			warningOptionPane.setMessage("<html>I like <b>bold</b>,<br> and I like <i>italic</i>,<br> and I like to have<br> many lines.<br> Lots of lines.");
 			panel5.add(warningOptionPane, BorderLayout.CENTER);
 		}
 		add(panel5, "cell 1 4");

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatOptionPaneTest.jfd

@@ -140,7 +140,7 @@ new FormModel {
 					name: "warningOptionPane"
 					"messageType": 2
 					"optionType": 2
-					"message": "Beware of the dog!"
+					"message": "<html>I like <b>bold</b>,<br> and I like <i>italic</i>,<br> and I like to have<br> many lines.<br> Lots of lines."
 				}, new FormLayoutConstraints( class java.lang.String ) {
 					"value": "Center"
 				} )

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatTestFrame.java

@@ -17,13 +17,20 @@
 package com.formdev.flatlaf;
 
 import java.awt.*;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
 import java.awt.event.KeyEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.util.function.BiConsumer;
 import java.util.prefs.Preferences;
 import javax.swing.*;
 import javax.swing.plaf.ColorUIResource;
 import javax.swing.plaf.metal.MetalLookAndFeel;
 import javax.swing.plaf.nimbus.NimbusLookAndFeel;
+import com.formdev.flatlaf.ui.FlatUIUtils;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 import net.miginfocom.swing.*;
 
 /**
@@ -34,47 +41,53 @@ public class FlatTestFrame
 {
 	private static final String PREFS_ROOT_PATH = "/flatlaf-test";
 	private static final String KEY_LAF = "laf";
+	private static final String KEY_SCALE_FACTOR = "scaleFactor";
 
+	private final String title;
 	private JComponent content;
 	private FlatInspector inspector;
 
 	public static FlatTestFrame create( String[] args, String title ) {
+		Preferences prefs = Preferences.userRoot().node( PREFS_ROOT_PATH );
+
+		// set scale factor
+		if( System.getProperty( "flatlaf.uiScale", System.getProperty( "sun.java2d.uiScale" ) ) == null ) {
+			String scaleFactor = prefs.get( KEY_SCALE_FACTOR, null );
+			if( scaleFactor != null )
+				System.setProperty( "flatlaf.uiScale", scaleFactor );
+		}
+
 		// set look and feel
 		try {
 			if( args.length > 0 )
 				UIManager.setLookAndFeel( args[0] );
 			else {
-				String lafClassName = Preferences.userRoot().node( PREFS_ROOT_PATH )
-					.get( KEY_LAF, FlatLightLaf.class.getName() );
+				String lafClassName = prefs.get( KEY_LAF, FlatLightLaf.class.getName() );
 				UIManager.setLookAndFeel( lafClassName );
 			}
 		} catch( Exception ex ) {
 			ex.printStackTrace();
 
 			// fallback
-			try {
-				UIManager.setLookAndFeel( new FlatLightLaf() );
-			} catch( Exception ex2 ) {
-				ex2.printStackTrace();
-			}
+			FlatLightLaf.install();
 		}
 
 		// create frame
-		FlatTestFrame frame = new FlatTestFrame();
-		frame.setTitle( title + " (Java " + System.getProperty( "java.version" ) + ")" );
-		return frame;
+		return new FlatTestFrame( title );
 	}
 
-	private FlatTestFrame() {
+	private FlatTestFrame( String title ) {
+		this.title = title;
+
 		initComponents();
 
 		// initialize look and feels combo box
 		DefaultComboBoxModel<LafInfo> lafModel = new DefaultComboBoxModel<>();
 		lafModel.addElement( new LafInfo( "Flat Light (F1)", FlatLightLaf.class.getName() ) );
 		lafModel.addElement( new LafInfo( "Flat Dark (F2)", FlatDarkLaf.class.getName() ) );
-		lafModel.addElement( new LafInfo( "Flat Test (F3)", FlatTestLaf.class.getName() ) );
-		lafModel.addElement( new LafInfo( "Flat IntelliJ (F4)", FlatIntelliJLaf.class.getName() ) );
-		lafModel.addElement( new LafInfo( "Flat Darcula (F5)", FlatDarculaLaf.class.getName() ) );
+		lafModel.addElement( new LafInfo( "Flat IntelliJ (F3)", FlatIntelliJLaf.class.getName() ) );
+		lafModel.addElement( new LafInfo( "Flat Darcula (F4)", FlatDarculaLaf.class.getName() ) );
+		lafModel.addElement( new LafInfo( "Flat Test (F8)", FlatTestLaf.class.getName() ) );
 
 		UIManager.LookAndFeelInfo[] lookAndFeels = UIManager.getInstalledLookAndFeels();
 		for( UIManager.LookAndFeelInfo lookAndFeel : lookAndFeels ) {
@@ -85,7 +98,8 @@ public class FlatTestFrame
 			  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_MAC && className.equals( "com.apple.laf.AquaLookAndFeel") ) ||
+				(SystemInfo.IS_LINUX && className.equals( "com.sun.java.swing.plaf.gtk.GTKLookAndFeel") ) )
 				name += " (F9)";
 			else if( className.equals( MetalLookAndFeel.class.getName() ) )
 				name += " (F10)";
@@ -106,17 +120,25 @@ public class FlatTestFrame
 
 		lookAndFeelComboBox.setModel( lafModel );
 
-		// register F1, F2 and F3 keys to switch to Light, Dark or Test LaF
+		updateScaleFactorComboBox();
+		String scaleFactor = System.getProperty( "flatlaf.uiScale", System.getProperty( "sun.java2d.uiScale" ) );
+		if( scaleFactor != null )
+			scaleFactorComboBox.setSelectedItem( scaleFactor );
+
+		// register F1, F2, ... keys to switch to Light, Dark or other LaFs
 		registerSwitchToLookAndFeel( KeyEvent.VK_F1, FlatLightLaf.class.getName() );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F2, FlatDarkLaf.class.getName() );
-		registerSwitchToLookAndFeel( KeyEvent.VK_F3, FlatTestLaf.class.getName() );
-		registerSwitchToLookAndFeel( KeyEvent.VK_F4, FlatIntelliJLaf.class.getName() );
-		registerSwitchToLookAndFeel( KeyEvent.VK_F5, FlatDarculaLaf.class.getName() );
+		registerSwitchToLookAndFeel( KeyEvent.VK_F3, FlatIntelliJLaf.class.getName() );
+		registerSwitchToLookAndFeel( KeyEvent.VK_F4, FlatDarculaLaf.class.getName() );
+
+		registerSwitchToLookAndFeel( KeyEvent.VK_F8, FlatTestLaf.class.getName() );
 
 		if( SystemInfo.IS_WINDOWS )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
 		else if( SystemInfo.IS_MAC )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.apple.laf.AquaLookAndFeel" );
+		else if( SystemInfo.IS_LINUX )
+			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F10, MetalLookAndFeel.class.getName() );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F11, NimbusLookAndFeel.class.getName() );
 
@@ -130,6 +152,47 @@ public class FlatTestFrame
 
 		// close frame
 		closeButton.addActionListener(e -> dispose());
+
+		// update title
+		addWindowListener( new WindowAdapter() {
+			@Override
+			public void windowOpened( WindowEvent e ) {
+				updateTitle();
+			}
+		} );
+
+		// update title when moved to another screen
+		addComponentListener( new ComponentAdapter() {
+			@Override
+			public void componentMoved( ComponentEvent e ) {
+				updateTitle();
+			}
+		} );
+
+		UIManager.addPropertyChangeListener( e -> {
+			if( "lookAndFeel".equals( e.getPropertyName() ) ) {
+				EventQueue.invokeLater( () -> {
+					// update title because user scale factor may change
+					updateTitle();
+
+					// enable/disable scale factor combobox
+					updateScaleFactorComboBox();
+				} );
+			}
+		} );
+	}
+
+	private void updateTitle() {
+		double systemScaleFactor = UIScale.getSystemScaleFactor( getGraphicsConfiguration() );
+		float userScaleFactor = UIScale.getUserScaleFactor();
+		String newTitle = title + " (Java " + System.getProperty( "java.version" )
+			+ (systemScaleFactor != 1 ? (";  system scale factor " + systemScaleFactor) : "")
+			+ (userScaleFactor != 1 ? (";  user scale factor " + userScaleFactor) : "")
+			+ (systemScaleFactor == 1 && userScaleFactor == 1 ? "; no scaling" : "")
+			+ ")";
+
+		if( !newTitle.equals( getTitle() ) )
+			setTitle( newTitle );
 	}
 
 	private void registerSwitchToLookAndFeel( int keyCode, String lafClassName ) {
@@ -141,7 +204,7 @@ public class FlatTestFrame
 			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 	}
 
-	protected void showFrame( JComponent content ) {
+	public void showFrame( JComponent content ) {
 		this.content = content;
 
 		contentPanel.getContentPane().add( content );
@@ -169,22 +232,48 @@ public class FlatTestFrame
 		if( newLaf.className.equals( UIManager.getLookAndFeel().getClass().getName() ) )
 			return;
 
+		// hide popup to avoid occasional StackOverflowError when updating UI
+		lookAndFeelComboBox.setPopupVisible( false );
+
 		Preferences.userRoot().node( PREFS_ROOT_PATH ).put( KEY_LAF, newLaf.className );
 
+		applyLookAndFeel( newLaf.className, false );
+	}
+
+	private void applyLookAndFeel( String lafClassName, boolean pack ) {
 		EventQueue.invokeLater( () -> {
 			try {
 				// change look and feel
-				UIManager.setLookAndFeel( newLaf.className );
+				UIManager.setLookAndFeel( lafClassName );
 
 				// update all components
-				SwingUtilities.updateComponentTreeUI( this );
+				FlatLaf.updateUI();
 
 				// increase size of frame if necessary
-				int width = getWidth();
-				int height = getHeight();
-				Dimension prefSize = getPreferredSize();
-				if( prefSize.width > width || prefSize.height > height )
-					setSize( Math.max( prefSize.width, width ), Math.max( prefSize.height, height ) );
+				if( pack )
+					pack();
+				else {
+					int width = getWidth();
+					int height = getHeight();
+					Dimension prefSize = getPreferredSize();
+					if( prefSize.width > width || prefSize.height > height )
+						setSize( Math.max( prefSize.width, width ), Math.max( prefSize.height, height ) );
+				}
+
+				// limit frame size to screen size
+				Rectangle screenBounds = getGraphicsConfiguration().getBounds();
+				screenBounds = FlatUIUtils.subtractInsets( screenBounds, getToolkit().getScreenInsets( getGraphicsConfiguration() ) );
+				Dimension frameSize = getSize();
+				if( frameSize.width > screenBounds.width || frameSize.height > screenBounds.height )
+					setSize( Math.min( frameSize.width, screenBounds.width ), Math.min( frameSize.height, screenBounds.height ) );
+
+				// move frame to left/top if necessary
+				if( getX() + getWidth() > screenBounds.x + screenBounds.width ||
+					getY() + getHeight() > screenBounds.y + screenBounds.height )
+				{
+					setLocation( Math.min( getX(), screenBounds.x + screenBounds.width - getWidth() ),
+								 Math.min( getY(), screenBounds.y + screenBounds.height - getHeight() ) );
+				}
 
 				if( inspector != null )
 					inspector.update();
@@ -200,7 +289,15 @@ public class FlatTestFrame
 			boolean explicit = explicitColorsCheckBox.isSelected();
 			ColorUIResource restoreColor = new ColorUIResource( Color.white );
 
-			explicitColors( content, explicit, restoreColor );
+			updateComponentsRecur( content, (c, type) -> {
+				if( type == "view" || type == "tab" ) {
+					c.setForeground( explicit ? Color.magenta : restoreColor );
+					c.setBackground( explicit ? Color.orange : restoreColor );
+				} else {
+					c.setForeground( explicit ? Color.blue : restoreColor );
+					c.setBackground( explicit ? Color.red : restoreColor );
+				}
+			} );
 
 			// because colors may depend on state (e.g. disabled JTextField)
 			// it is best to update all UI delegates to get correct result
@@ -209,40 +306,6 @@ public class FlatTestFrame
 		} );
 	}
 
-	private void explicitColors( Container container, boolean explicit, ColorUIResource restoreColor ) {
-		for( Component c : container.getComponents() ) {
-			if( c instanceof JPanel ) {
-				explicitColors( (JPanel) c, explicit, restoreColor );
-				continue;
-			}
-
-			c.setForeground( explicit ? Color.blue : restoreColor );
-			c.setBackground( explicit ? Color.red : restoreColor );
-
-			if( c instanceof JScrollPane ) {
-				Component view = ((JScrollPane)c).getViewport().getView();
-				if( view != null ) {
-					view.setForeground( explicit ? Color.magenta : restoreColor );
-					view.setBackground( explicit ? Color.orange : restoreColor );
-				}
-			} else if( c instanceof JTabbedPane ) {
-				JTabbedPane tabPane = (JTabbedPane)c;
-				int tabCount = tabPane.getTabCount();
-				for( int i = 0; i < tabCount; i++ ) {
-					Component tab = tabPane.getComponentAt( i );
-					if( tab != null ) {
-						tab.setForeground( explicit ? Color.magenta : restoreColor );
-						tab.setBackground( explicit ? Color.orange : restoreColor );
-					}
-				}
-			}
-
-			if( c instanceof JToolBar )
-				explicitColors( (JToolBar) c, explicit, restoreColor );
-		}
-
-	}
-
 	private void rightToLeftChanged() {
 		contentPanel.applyComponentOrientation( rightToLeftCheckBox.isSelected()
 			? ComponentOrientation.RIGHT_TO_LEFT
@@ -252,35 +315,10 @@ public class FlatTestFrame
 	}
 
 	private void enabledChanged() {
-		enabledDisable( content, enabledCheckBox.isSelected() );
-	}
-
-	private void enabledDisable( Container container, boolean enabled ) {
-		for( Component c : container.getComponents() ) {
-			if( c instanceof JPanel ) {
-				enabledDisable( (JPanel) c, enabled );
-				continue;
-			}
-
+		boolean enabled = enabledCheckBox.isSelected();
+		updateComponentsRecur( content, (c, type) -> {
 			c.setEnabled( enabled );
-
-			if( c instanceof JScrollPane ) {
-				Component view = ((JScrollPane)c).getViewport().getView();
-				if( view != null )
-					view.setEnabled( enabled );
-			} else if( c instanceof JTabbedPane ) {
-				JTabbedPane tabPane = (JTabbedPane)c;
-				int tabCount = tabPane.getTabCount();
-				for( int i = 0; i < tabCount; i++ ) {
-					Component tab = tabPane.getComponentAt( i );
-					if( tab != null )
-						tab.setEnabled( enabled );
-				}
-			}
-
-			if( c instanceof JToolBar )
-				enabledDisable( (JToolBar) c, enabled );
-		}
+		} );
 	}
 
 	private void inspectChanged() {
@@ -289,6 +327,59 @@ public class FlatTestFrame
 		inspector.setEnabled( inspectCheckBox.isSelected() );
 	}
 
+	private void scaleFactorChanged() {
+		String scaleFactor = (String) scaleFactorComboBox.getSelectedItem();
+		if( "default".equals( scaleFactor ) )
+			scaleFactor = null;
+
+		// hide popup to avoid occasional StackOverflowError when updating UI
+		scaleFactorComboBox.setPopupVisible( false );
+
+		Preferences prefs = Preferences.userRoot().node( PREFS_ROOT_PATH );
+
+		if( scaleFactor != null ) {
+			System.setProperty( "flatlaf.uiScale", scaleFactor );
+			prefs.put( KEY_SCALE_FACTOR, scaleFactor );
+		} else {
+			System.clearProperty( "flatlaf.uiScale" );
+			prefs.remove( KEY_SCALE_FACTOR );
+		}
+
+		applyLookAndFeel( UIManager.getLookAndFeel().getClass().getName(), true );
+	}
+
+	private void updateScaleFactorComboBox() {
+		scaleFactorComboBox.setEnabled( !UIScale.isSystemScalingEnabled() && UIManager.getLookAndFeel() instanceof FlatLaf );
+	}
+
+	private void updateComponentsRecur( Container container, BiConsumer<Component, String> action ) {
+		for( Component c : container.getComponents() ) {
+			if( c instanceof JPanel ) {
+				updateComponentsRecur( (JPanel) c, action );
+				continue;
+			}
+
+			action.accept( c, null );
+
+			if( c instanceof JScrollPane ) {
+				Component view = ((JScrollPane)c).getViewport().getView();
+				if( view != null )
+					action.accept( view, "view" );
+			} else if( c instanceof JTabbedPane ) {
+				JTabbedPane tabPane = (JTabbedPane)c;
+				int tabCount = tabPane.getTabCount();
+				for( int i = 0; i < tabCount; i++ ) {
+					Component tab = tabPane.getComponentAt( i );
+					if( tab != null )
+						action.accept( tab, "tab" );
+				}
+			}
+
+			if( c instanceof JToolBar )
+				updateComponentsRecur( (JToolBar) c, action );
+		}
+	}
+
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		dialogPane = new JPanel();
@@ -299,6 +390,7 @@ public class FlatTestFrame
 		rightToLeftCheckBox = new JCheckBox();
 		enabledCheckBox = new JCheckBox();
 		inspectCheckBox = new JCheckBox();
+		scaleFactorComboBox = new JComboBox<>();
 		closeButton = new JButton();
 
 		//======== this ========
@@ -332,6 +424,7 @@ public class FlatTestFrame
 					"[fill]" +
 					"[fill]" +
 					"[fill]" +
+					"[fill]" +
 					"[grow,fill]" +
 					"[button,fill]",
 					// rows
@@ -366,9 +459,27 @@ public class FlatTestFrame
 				inspectCheckBox.addActionListener(e -> inspectChanged());
 				buttonBar.add(inspectCheckBox, "cell 4 0");
 
+				//---- scaleFactorComboBox ----
+				scaleFactorComboBox.setModel(new DefaultComboBoxModel<>(new String[] {
+					"default",
+					"1",
+					"1.25",
+					"1.5",
+					"1.75",
+					"2.0",
+					"2.25",
+					"2.5",
+					"3",
+					"3.5",
+					"4"
+				}));
+				scaleFactorComboBox.setMaximumRowCount(20);
+				scaleFactorComboBox.addActionListener(e -> scaleFactorChanged());
+				buttonBar.add(scaleFactorComboBox, "cell 5 0");
+
 				//---- closeButton ----
 				closeButton.setText("Close");
-				buttonBar.add(closeButton, "cell 6 0");
+				buttonBar.add(closeButton, "cell 7 0");
 			}
 			dialogPane.add(buttonBar, BorderLayout.SOUTH);
 		}
@@ -385,6 +496,7 @@ public class FlatTestFrame
 	private JCheckBox rightToLeftCheckBox;
 	private JCheckBox enabledCheckBox;
 	private JCheckBox inspectCheckBox;
+	private JComboBox<String> scaleFactorComboBox;
 	private JButton closeButton;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 

flatlaf-core/src/test/java/com/formdev/flatlaf/FlatTestFrame.jfd

@@ -21,7 +21,7 @@ new FormModel {
 				} )
 				add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 					"$layoutConstraints": "insets dialog"
-					"$columnConstraints": "[fill][fill][fill][fill][fill][grow,fill][button,fill]"
+					"$columnConstraints": "[fill][fill][fill][fill][fill][fill][grow,fill][button,fill]"
 					"$rowSpecs": "[fill]"
 				} ) {
 					name: "buttonBar"
@@ -67,11 +67,35 @@ new FormModel {
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 						"value": "cell 4 0"
 					} )
+					add( new FormComponent( "javax.swing.JComboBox" ) {
+						name: "scaleFactorComboBox"
+						"model": new javax.swing.DefaultComboBoxModel {
+							selectedItem: "default"
+							addElement( "default" )
+							addElement( "1" )
+							addElement( "1.25" )
+							addElement( "1.5" )
+							addElement( "1.75" )
+							addElement( "2.0" )
+							addElement( "2.25" )
+							addElement( "2.5" )
+							addElement( "3" )
+							addElement( "3.5" )
+							addElement( "4" )
+						}
+						"maximumRowCount": 20
+						auxiliary() {
+							"JavaCodeGenerator.typeParameters": "String"
+						}
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "scaleFactorChanged", false ) )
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 5 0"
+					} )
 					add( new FormComponent( "javax.swing.JButton" ) {
 						name: "closeButton"
 						"text": "Close"
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 6 0"
+						"value": "cell 7 0"
 					} )
 				}, new FormLayoutConstraints( class java.lang.String ) {
 					"value": "South"
@@ -81,7 +105,7 @@ new FormModel {
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 510, 300 )
+			"size": new java.awt.Dimension( 640, 300 )
 		} )
 	}
 }

flatlaf-demo/build.gradle.kts

@@ -18,17 +18,14 @@ version = rootProject.version
 
 plugins {
 	`java-library`
-}
-
-repositories {
-	jcenter()
+	id( "com.jfrog.bintray" ) version "1.8.4"
 }
 
 dependencies {
 	implementation( project( ":flatlaf-core" ) )
 	implementation( "com.miglayout:miglayout-swing:5.2" )
 	implementation( "com.jgoodies:jgoodies-forms:1.9.0" )
-	implementation( "guru.nidi.com.kitfox:svgSalamander:1.1.2" )
+	implementation( "com.formdev:svgSalamander:1.1.2.1" )
 }
 
 java {
@@ -38,13 +35,37 @@ java {
 
 tasks {
 	jar {
+		dependsOn( ":flatlaf-core:jar" )
+
 		manifest {
 			attributes( "Main-Class" to "com.formdev.flatlaf.demo.FlatLafDemo" )
 		}
 
+		exclude( "META-INF/versions/**" )
+
 		// include all dependencies in jar
 		from( {
 			configurations.runtimeClasspath.get().filter { it.name.endsWith( "jar" ) }.map { zipTree( it ) }
 		} )
 	}
 }
+
+bintray {
+	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
+	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+
+	setConfigurations( "archives" )
+
+	with( pkg ) {
+		repo = "flatlaf"
+		name = "flatlaf-demo"
+		setLicenses( "Apache-2.0" )
+		vcsUrl = "https://github.com/JFormDesigner/FlatLaf"
+
+		with( version ) {
+			name = project.version.toString()
+		}
+
+		publish = true
+	}
+}

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

@@ -39,6 +39,7 @@ class BasicComponentsPanel
 		JButton button2 = new JButton();
 		JButton button3 = new JButton();
 		JButton button4 = new JButton();
+		JButton button13 = new JButton();
 		JLabel checkBoxLabel = new JLabel();
 		JCheckBox checkBox1 = new JCheckBox();
 		JCheckBox checkBox2 = new JCheckBox();
@@ -169,6 +170,10 @@ class BasicComponentsPanel
 		button4.setEnabled(false);
 		add(button4, "cell 4 1");
 
+		//---- button13 ----
+		button13.setIcon(UIManager.getIcon("Tree.closedIcon"));
+		add(button13, "cell 5 1");
+
 		//---- checkBoxLabel ----
 		checkBoxLabel.setText("JCheckBox");
 		add(checkBoxLabel, "cell 0 2");

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

@@ -69,6 +69,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 1"
 			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "button13"
+				"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 1"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "checkBoxLabel"
 				"text": "JCheckBox"

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

@@ -17,6 +17,8 @@
 package com.formdev.flatlaf.demo;
 
 import java.awt.*;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
 import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
@@ -56,7 +58,8 @@ class ControlBar
 			  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_MAC && className.equals( "com.apple.laf.AquaLookAndFeel") ) ||
+				(SystemInfo.IS_LINUX && className.equals( "com.sun.java.swing.plaf.gtk.GTKLookAndFeel") ) )
 				name += " (F9)";
 			else if( className.equals( MetalLookAndFeel.class.getName() ) )
 				name += " (F10)";
@@ -76,6 +79,15 @@ class ControlBar
 		lafModel.setSelectedItem( lafModel.getElementAt( sel ) );
 
 		lookAndFeelComboBox.setModel( lafModel );
+
+		UIManager.addPropertyChangeListener( e -> {
+			if( "lookAndFeel".equals( e.getPropertyName() ) ) {
+				EventQueue.invokeLater( () -> {
+					// update info label because user scale factor may change
+					updateInfoLabel();
+				} );
+			}
+		} );
 	}
 
 	void initialize( JFrame frame, JTabbedPane tabbedPane ) {
@@ -92,6 +104,8 @@ class ControlBar
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
 		else if( SystemInfo.IS_MAC )
 			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.apple.laf.AquaLookAndFeel" );
+		else if( SystemInfo.IS_LINUX )
+			registerSwitchToLookAndFeel( KeyEvent.VK_F9, "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F10, MetalLookAndFeel.class.getName() );
 		registerSwitchToLookAndFeel( KeyEvent.VK_F11, NimbusLookAndFeel.class.getName() );
 
@@ -106,15 +120,19 @@ class ControlBar
 		// make the "close" button the default button
 		frame.getRootPane().setDefaultButton( closeButton );
 
-		// move focus to "close" button
+		// update info label and move focus to "close" button
 		frame.addWindowListener( new WindowAdapter() {
 			@Override
 			public void windowOpened( WindowEvent e ) {
 				updateInfoLabel();
 				closeButton.requestFocusInWindow();
 			}
+		} );
+
+		// update info label when moved to another screen
+		frame.addComponentListener( new ComponentAdapter() {
 			@Override
-			public void windowActivated( WindowEvent e ) {
+			public void componentMoved( ComponentEvent e ) {
 				updateInfoLabel();
 			}
 		} );
@@ -123,11 +141,14 @@ class ControlBar
 	private void updateInfoLabel() {
 		double systemScaleFactor = UIScale.getSystemScaleFactor( getGraphicsConfiguration() );
 		float userScaleFactor = UIScale.getUserScaleFactor();
-		infoLabel.setText( "(Java " + System.getProperty( "java.version" )
+		String newInfo = "(Java " + System.getProperty( "java.version" )
 			+ (systemScaleFactor != 1 ? (";  system scale factor " + systemScaleFactor) : "")
 			+ (userScaleFactor != 1 ? (";  user scale factor " + userScaleFactor) : "")
 			+ (systemScaleFactor == 1 && userScaleFactor == 1 ? "; no scaling" : "")
-			+ ")" );
+			+ ")";
+
+		if( !newInfo.equals( infoLabel.getText() ) )
+			infoLabel.setText( newInfo );
 	}
 
 	private void registerSwitchToLookAndFeel( int keyCode, String lafClassName ) {
@@ -161,11 +182,8 @@ class ControlBar
 				// change look and feel
 				UIManager.setLookAndFeel( newLaf.className );
 
-				// update info label because user scale factor may change
-				updateInfoLabel();
-
 				// update all components
-				SwingUtilities.updateComponentTreeUI( frame );
+				FlatLaf.updateUI();
 
 				// increase size of frame if necessary
 				int width = frame.getWidth();

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

@@ -46,11 +46,7 @@ public class FlatLafDemo
 			ex.printStackTrace();
 
 			// fallback
-			try {
-				UIManager.setLookAndFeel( new FlatLightLaf() );
-			} catch( Exception ex2 ) {
-				ex2.printStackTrace();
-			}
+			FlatLightLaf.install();
 		}
 
 		// create frame

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

@@ -201,7 +201,7 @@ class OptionPanePanel
 				//---- warningOptionPane ----
 				warningOptionPane.setMessageType(JOptionPane.WARNING_MESSAGE);
 				warningOptionPane.setOptionType(JOptionPane.OK_CANCEL_OPTION);
-				warningOptionPane.setMessage("Beware of the dog!");
+				warningOptionPane.setMessage("<html>I like <b>bold</b>,<br> and I like <i>italic</i>,<br> and I like to have<br> many lines.<br> Lots of lines.");
 				panel5.add(warningOptionPane, BorderLayout.CENTER);
 			}
 			panel9.add(panel5, "cell 1 4");

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

@@ -143,7 +143,7 @@ new FormModel {
 						name: "warningOptionPane"
 						"messageType": 2
 						"optionType": 2
-						"message": "Beware of the dog!"
+						"message": "<html>I like <b>bold</b>,<br> and I like <i>italic</i>,<br> and I like to have<br> many lines.<br> Lots of lines."
 					}, new FormLayoutConstraints( class java.lang.String ) {
 						"value": "Center"
 					} )

flatlaf-swingx/README.md

@@ -0,0 +1,43 @@
+FlatLaf addon for SwingX
+========================
+
+This addon for FlatLaf adds support for **some** widely used SwingX components.
+
+Many SwingX components that do not use UI delegates (e.g. `JXButton`, `JXLabel`,
+`JXList`, etc) work with FlatLaf without adaptation.
+
+Following SwingX components, which use UI delegates, are supported by this
+addon:
+
+- `JXBusyLabel`
+- `JXDatePicker`
+- `JXHeader`
+- `JXHyperlink`
+- `JXMonthView`
+- `JXTaskPaneContainer`
+- `JXTaskPane`
+
+![Flat Light SwingX Demo](../images/FlatLightSwingXTest.png)
+
+![Flat Dark SwingX Demo](../images/FlatDarkSwingXTest.png)
+
+
+Download
+--------
+
+FlatLaf for SwingX binaries are available on **JCenter** and **Maven Central**.
+
+If you use Maven or Gradle, add a dependency with following coordinates to your
+build script:
+
+    groupId:     com.formdev
+    artifactId:  flatlaf-swingx
+    version:     0.15
+
+Otherwise download `flatlaf-swingx-<version>.jar` here:
+
+[![Download](https://api.bintray.com/packages/jformdesigner/flatlaf/flatlaf-swingx/images/download.svg)](https://bintray.com/jformdesigner/flatlaf/flatlaf-swingx/_latestVersion)
+
+You also need `flatlaf-<version>.jar`, which you can download here:
+
+[![Download](https://api.bintray.com/packages/jformdesigner/flatlaf/flatlaf/images/download.svg)](https://bintray.com/jformdesigner/flatlaf/flatlaf/_latestVersion)

flatlaf-swingx/build.gradle.kts

@@ -0,0 +1,119 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.
+ */
+
+version = rootProject.version
+
+plugins {
+	`java-library`
+	`maven-publish`
+	id( "com.jfrog.bintray" ) version "1.8.4"
+}
+
+dependencies {
+	implementation( project( ":flatlaf-core" ) )
+	implementation( "org.swinglabs.swingx:swingx-all:1.6.5-1" )
+
+	testImplementation( project( ":flatlaf-core", "testArtifacts" ) )
+	testImplementation( "org.swinglabs.swingx:swingx-beaninfo:1.6.5-1" )
+	testImplementation( "com.miglayout:miglayout-swing:5.2" )
+}
+
+java {
+	sourceCompatibility = JavaVersion.VERSION_1_8
+	targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+tasks {
+
+	javadoc {
+		options {
+			this as StandardJavadocDocletOptions
+			tags = listOf( "uiDefault", "clientProperty" )
+		}
+		isFailOnError = false
+	}
+
+	register( "sourcesJar", Jar::class ) {
+		archiveClassifier.set( "sources" )
+
+		from( sourceSets.main.get().allJava )
+	}
+
+	register( "javadocJar", Jar::class ) {
+		archiveClassifier.set( "javadoc" )
+
+		from( javadoc )
+	}
+}
+
+publishing {
+	publications {
+		create<MavenPublication>( "maven" ) {
+			artifactId = "flatlaf-swingx"
+			groupId = "com.formdev"
+
+			from( components["java"] )
+
+			artifact( tasks["sourcesJar"] )
+			artifact( tasks["javadocJar"] )
+
+			pom {
+				name.set( "FlatLaf addon for SwingX" )
+				description.set( "Flat Look and Feel addon for SwingX" )
+				url.set( "https://github.com/JFormDesigner/FlatLaf" )
+
+				licenses {
+					license {
+						name.set( "The Apache License, Version 2.0" )
+						url.set( "http://www.apache.org/licenses/LICENSE-2.0.txt" )
+					}
+				}
+
+				developers {
+					developer {
+						name.set( "Karl Tauber" )
+						organization.set( "FormDev Software GmbH" )
+						organizationUrl.set( "https://www.formdev.com/" )
+					}
+				}
+
+				scm {
+					url.set( "https://github.com/JFormDesigner/FlatLaf" )
+				}
+			}
+		}
+	}
+}
+
+bintray {
+	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
+	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+
+	setPublications( "maven" )
+
+	with( pkg ) {
+		repo = "flatlaf"
+		name = "flatlaf-swingx"
+		setLicenses( "Apache-2.0" )
+		vcsUrl = "https://github.com/JFormDesigner/FlatLaf"
+
+		with( version ) {
+			name = project.version.toString()
+		}
+
+		publish = true
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/FlatLookAndFeelAddons.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx;
+
+import javax.swing.UIManager;
+import org.jdesktop.swingx.plaf.basic.BasicLookAndFeelAddons;
+import com.formdev.flatlaf.FlatLaf;
+
+/**
+ * SwingX LaF addon.
+ *
+ * This class is required because without this class, the system addon would be used,
+ * which may result in wrong UI defaults. (e.g. background of TaskPaneContainer)
+ *
+ * @author Karl Tauber
+ */
+public class FlatLookAndFeelAddons
+	extends BasicLookAndFeelAddons
+{
+	@Override
+	protected boolean matches() {
+		return UIManager.getLookAndFeel() instanceof FlatLaf;
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/FlatSwingXDefaultsAddon.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx;
+
+import java.io.InputStream;
+import com.formdev.flatlaf.FlatDefaultsAddon;
+
+/**
+ * SwingX addon for FlatLaf.
+ *
+ * @author Karl Tauber
+ */
+public class FlatSwingXDefaultsAddon
+	extends FlatDefaultsAddon
+{
+	/**
+	 * Finds SwingX addon .properties file for the given LaF class
+	 * in the same package as this class.
+	 */
+	@Override
+	public InputStream getDefaults( Class<?> lafClass ) {
+		Class<?> addonClass = this.getClass();
+		String propertiesName = "/" + addonClass.getPackage().getName().replace( '.', '/' )
+			+ '/' + lafClass.getSimpleName() + ".properties";
+		return addonClass.getResourceAsStream( propertiesName );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatBusyLabelUI.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import javax.swing.JComponent;
+import javax.swing.JLabel;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import org.jdesktop.swingx.JXBusyLabel;
+import org.jdesktop.swingx.plaf.basic.BasicBusyLabelUI;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+//TODO scale busy spinner
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXBusyLabel}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatBusyLabelUI
+	extends BasicBusyLabelUI
+{
+	private Color disabledForeground;
+
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatBusyLabelUI( (JXBusyLabel) c );
+	}
+
+	public FlatBusyLabelUI( JXBusyLabel busyLabel ) {
+		super( busyLabel );
+	}
+
+	@Override
+	protected void installDefaults( JLabel c ) {
+		super.installDefaults( c );
+
+		disabledForeground = UIManager.getColor( "Label.disabledForeground" );
+
+		// force recreation of busy painter for correct colors when switching LaF
+		if( c.getIcon() != null ) {
+			JXBusyLabel busyLabel = (JXBusyLabel) c;
+			boolean oldBusy = busyLabel.isBusy();
+			busyLabel.setBusy( false );
+			busyLabel.setBusyPainter( null );
+			busyLabel.setBusy( oldBusy );
+		}
+	}
+
+	@Override
+	protected void uninstallDefaults( JLabel c ) {
+		super.uninstallDefaults( c );
+
+		disabledForeground = null;
+	}
+
+	@Override
+	protected void paintDisabledText( JLabel l, Graphics g, String s, int textX, int textY ) {
+		int mnemIndex = FlatLaf.isShowMnemonics() ? l.getDisplayedMnemonicIndex() : -1;
+		g.setColor( disabledForeground );
+		FlatUIUtils.drawStringUnderlineCharAt( l, g, s, mnemIndex, textX, textY );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatDatePickerBorder.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.Component;
+import org.jdesktop.swingx.JXDatePicker;
+import com.formdev.flatlaf.ui.FlatRoundBorder;
+
+/**
+ * Border for {@link org.jdesktop.swingx.JXDatePicker}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatDatePickerBorder
+	extends FlatRoundBorder
+{
+	@Override
+	protected boolean isFocused( Component c ) {
+		if( c instanceof JXDatePicker )
+			return ((JXDatePicker)c).getEditor().hasFocus();
+
+		return super.isFocused( c );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatDatePickerUI.java

@@ -0,0 +1,314 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Dimension;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.LayoutManager;
+import java.awt.Rectangle;
+import java.awt.Shape;
+import java.awt.event.FocusEvent;
+import java.awt.event.FocusListener;
+import java.awt.geom.Rectangle2D;
+import java.text.ParseException;
+import java.util.Calendar;
+import javax.swing.BorderFactory;
+import javax.swing.JButton;
+import javax.swing.JComponent;
+import javax.swing.JFormattedTextField;
+import javax.swing.JPanel;
+import javax.swing.LookAndFeel;
+import javax.swing.SwingConstants;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
+import org.jdesktop.swingx.JXHyperlink;
+import org.jdesktop.swingx.JXPanel;
+import org.jdesktop.swingx.calendar.DatePickerFormatter.DatePickerFormatterUIResource;
+import org.jdesktop.swingx.plaf.basic.BasicDatePickerUI;
+import com.formdev.flatlaf.ui.FlatArrowButton;
+import com.formdev.flatlaf.ui.FlatBorder;
+import com.formdev.flatlaf.ui.FlatRoundBorder;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.ui.MigLayoutVisualPadding;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXDatePicker}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatDatePickerUI
+	extends BasicDatePickerUI
+{
+	protected Insets padding;
+
+	protected int focusWidth;
+	protected int arc;
+	protected String arrowType;
+	protected Color borderColor;
+	protected Color disabledBorderColor;
+
+	protected Color disabledBackground;
+
+	protected Color buttonBackground;
+	protected Color buttonArrowColor;
+	protected Color buttonDisabledArrowColor;
+	protected Color buttonHoverArrowColor;
+
+	private JButton popupButton;
+
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatDatePickerUI();
+	}
+
+	@Override
+	public void installUI( JComponent c ) {
+		// must get UI defaults here because installDefaults() is invoked after
+		// installComponents(), which uses these values to create popup button
+
+		padding = UIManager.getInsets( "ComboBox.padding" );
+
+		focusWidth = UIManager.getInt( "Component.focusWidth" );
+		arc = UIManager.getInt( "Component.arc" );
+		arrowType = UIManager.getString( "Component.arrowType" );
+		borderColor = UIManager.getColor( "Component.borderColor" );
+		disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
+
+		disabledBackground = UIManager.getColor( "ComboBox.disabledBackground" );
+
+		buttonBackground = UIManager.getColor( "ComboBox.buttonBackground" );
+		buttonArrowColor = UIManager.getColor( "ComboBox.buttonArrowColor" );
+		buttonDisabledArrowColor = UIManager.getColor( "ComboBox.buttonDisabledArrowColor" );
+		buttonHoverArrowColor = UIManager.getColor( "ComboBox.buttonHoverArrowColor" );
+
+		super.installUI( c );
+
+		// hack JXDatePicker.TodayPanel colors
+		// (there is no need to uninstall these changes because only UIResources are used,
+		// which are automatically replaced when switching LaF)
+		JPanel linkPanel = datePicker.getLinkPanel();
+		if( linkPanel instanceof JXPanel && linkPanel.getClass().getName().equals( "org.jdesktop.swingx.JXDatePicker$TodayPanel" ) ) {
+			((JXPanel)linkPanel).setBackgroundPainter( null );
+			linkPanel.setBackground( UIManager.getColor( "JXMonthView.background" ) );
+
+			if( linkPanel.getComponentCount() >= 1 && linkPanel.getComponent( 0 ) instanceof JXHyperlink ) {
+				JXHyperlink todayLink = (JXHyperlink) linkPanel.getComponent( 0 );
+				todayLink.setUnclickedColor( UIManager.getColor( "Hyperlink.linkColor" ) );
+				todayLink.setClickedColor( UIManager.getColor( "Hyperlink.visitedColor" ) );
+			}
+		}
+	}
+
+	@Override
+	protected void installDefaults() {
+		super.installDefaults();
+
+		LookAndFeel.installColors( datePicker, "ComboBox.background", "ComboBox.foreground" );
+
+		LookAndFeel.installBorder( datePicker, "JXDatePicker.border" );
+		LookAndFeel.installProperty( datePicker, "opaque", Boolean.TRUE );
+
+		MigLayoutVisualPadding.install( datePicker, focusWidth );
+	}
+
+	@Override
+	protected void uninstallDefaults() {
+		super.uninstallDefaults();
+
+		borderColor = null;
+		disabledBorderColor = null;
+
+		disabledBackground = null;
+
+		buttonBackground = null;
+		buttonArrowColor = null;
+		buttonDisabledArrowColor = null;
+		buttonHoverArrowColor = null;
+
+		if( datePicker.getBorder() instanceof UIResource )
+			datePicker.setBorder( null );
+
+		MigLayoutVisualPadding.uninstall( datePicker );
+	}
+
+	@Override
+	protected JFormattedTextField createEditor() {
+		JFormattedTextField editor = new DefaultEditor( new DatePickerFormatterUIResource( datePicker.getLocale() ) );
+		editor.setName( "dateField" );
+		editor.setBorder( BorderFactory.createEmptyBorder() );
+		editor.setOpaque( false );
+		editor.addFocusListener( new FocusListener() {
+			@Override
+			public void focusLost( FocusEvent e ) {
+				if( datePicker != null )
+					datePicker.repaint();
+			}
+			@Override
+			public void focusGained( FocusEvent e ) {
+				if( datePicker != null )
+					datePicker.repaint();
+			}
+		} );
+		return editor;
+	}
+
+	@Override
+	protected JButton createPopupButton() {
+		popupButton = new FlatArrowButton( SwingConstants.SOUTH, arrowType, buttonArrowColor,
+			buttonDisabledArrowColor, buttonHoverArrowColor, null );
+		popupButton.setName( "popupButton" );
+		return popupButton;
+	}
+
+	@Override
+	protected LayoutManager createLayoutManager() {
+		return new LayoutManager() {
+			@Override
+			public void addLayoutComponent( String name, Component comp ) {}
+			@Override
+			public void removeLayoutComponent( Component comp ) {}
+
+			@Override
+			public Dimension preferredLayoutSize( Container parent ) {
+				return parent.getPreferredSize();
+			}
+			@Override
+			public Dimension minimumLayoutSize( Container parent ) {
+				return parent.getMinimumSize();
+			}
+			@Override
+			public void layoutContainer( Container parent ) {
+				Insets insets = datePicker.getInsets();
+				int x = insets.left;
+				int y = insets.top;
+				int width = datePicker.getWidth() - insets.left - insets.right;
+				int height = datePicker.getHeight() - insets.top - insets.bottom;
+
+				int popupButtonWidth = popupButton != null ? height : 0;
+				boolean ltr = datePicker.getComponentOrientation().isLeftToRight();
+
+				Rectangle r = new Rectangle( x + (ltr ? 0 : popupButtonWidth), y, width - popupButtonWidth, height );
+				r = FlatUIUtils.subtractInsets( r, UIScale.scale( padding ) );
+				datePicker.getEditor().setBounds( r );
+
+				if( popupButton != null )
+					popupButton.setBounds( x + (ltr ? width - popupButtonWidth : 0), y, popupButtonWidth, height );
+			}
+		};
+	}
+
+	@Override
+	public Dimension getPreferredSize( JComponent c ) {
+		Dimension dim = datePicker.getEditor().getPreferredSize();
+		dim = FlatUIUtils.addInsets( dim, UIScale.scale( padding ) );
+		if( popupButton != null )
+			dim.width += dim.height;
+		return FlatUIUtils.addInsets( dim, datePicker.getInsets() );
+	}
+
+	@Override
+	public void update( Graphics g, JComponent c ) {
+		if( c.isOpaque() ) {
+			FlatUIUtils.paintParentBackground( g, c );
+
+			Graphics2D g2 = (Graphics2D) g;
+			FlatUIUtils.setRenderingHints( g2 );
+
+			int width = c.getWidth();
+			int height = c.getHeight();
+			float focusWidth = (c.getBorder() instanceof FlatBorder) ? scale( (float) this.focusWidth ) : 0;
+			float arc = (c.getBorder() instanceof FlatRoundBorder) ? scale( (float) this.arc ) : 0;
+			int arrowX = popupButton.getX();
+			int arrowWidth = popupButton.getWidth();
+			boolean enabled = c.isEnabled();
+			boolean isLeftToRight = c.getComponentOrientation().isLeftToRight();
+
+			// paint background
+			g2.setColor( enabled ? c.getBackground() : disabledBackground );
+			FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+
+			// paint arrow button 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.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+				g2.setClip( oldClip );
+			}
+
+			// paint vertical line between value and arrow button
+			g2.setColor( enabled ? borderColor : disabledBorderColor );
+			float lw = scale( 1f );
+			float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
+			g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - (focusWidth * 2) ) );
+		}
+
+		paint( g, c );
+	}
+
+	//---- class DefaultEditor ------------------------------------------------
+
+	private class DefaultEditor
+		extends JFormattedTextField
+		implements UIResource
+	{
+		DefaultEditor( AbstractFormatter formatter ) {
+			super( formatter );
+
+			// disable Component.minimumWidth
+			setColumns( 1 );
+		}
+
+		@Override
+		public Dimension getPreferredSize() {
+			Dimension prefSize = super.getPreferredSize();
+
+			// create date 2000-11-30 that is used for minimum width calculation
+			Calendar calendar = Calendar.getInstance( datePicker.getLocale() );
+			calendar.set( 2000, 11, 30 );
+
+			try {
+				AbstractFormatter formatter = getFormatter();
+				String str = formatter.valueToString( calendar.getTime() );
+
+				Insets insets = getInsets();
+				FontMetrics metrics = getFontMetrics( getFont() );
+				int minWidth = metrics.stringWidth( str ) + insets.left + insets.right + 2;
+				return new Dimension( Math.max( minWidth, prefSize.width ), prefSize.height );
+			} catch( ParseException ex ) {
+				// ignore
+				return prefSize;
+			}
+		}
+
+		@Override
+		public Dimension getMinimumSize() {
+			return getPreferredSize();
+		}
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatHeaderUI.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.Component;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.LayoutManager;
+import javax.swing.JComponent;
+import javax.swing.plaf.ComponentUI;
+import org.jdesktop.swingx.JXHeader;
+import org.jdesktop.swingx.plaf.basic.BasicHeaderUI;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXHeader}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatHeaderUI
+	extends BasicHeaderUI
+{
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatHeaderUI();
+	}
+
+	@Override
+	protected void installComponents( JXHeader header ) {
+		super.installComponents( header );
+
+		scaleLayout( header );
+	}
+
+	@Override
+	protected void onPropertyChange( JXHeader h, String propertyName, Object oldValue, Object newValue ) {
+		super.onPropertyChange( h, propertyName, oldValue, newValue );
+
+		if( "iconPosition".equals( propertyName ) )
+			scaleLayout( h );
+	}
+
+	private void scaleLayout( JXHeader header ) {
+		if( UIScale.getUserScaleFactor() == 1f )
+			return;
+
+		LayoutManager layout = header.getLayout();
+		if( !(layout instanceof GridBagLayout) )
+			return;
+
+		GridBagLayout gbl = (GridBagLayout) layout;
+		for( Component c : header.getComponents() ) {
+			GridBagConstraints cons = gbl.getConstraints( c );
+			cons.insets = UIScale.scale( cons.insets );
+			gbl.setConstraints( c, cons );
+		}
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatHyperlinkUI.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Rectangle;
+import java.awt.geom.Rectangle2D;
+import javax.swing.AbstractButton;
+import javax.swing.JComponent;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import org.jdesktop.swingx.plaf.basic.BasicHyperlinkUI;
+import com.formdev.flatlaf.ui.FlatButtonUI;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXHyperlink}.
+ *
+ * @uiDefault Hyperlink.disabledText				Color
+ *
+ * @author Karl Tauber
+ */
+public class FlatHyperlinkUI
+	extends BasicHyperlinkUI
+{
+	protected Color disabledText;
+
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatHyperlinkUI();
+	}
+
+	@Override
+	protected void installDefaults( AbstractButton b ) {
+		super.installDefaults( b );
+
+		disabledText = UIManager.getColor( "Hyperlink.disabledText" );
+	}
+
+	@Override
+	protected void uninstallDefaults( AbstractButton b ) {
+		super.uninstallDefaults( b );
+
+		disabledText = null;
+	}
+
+	@Override
+	public void paint( Graphics g, JComponent c ) {
+		FlatUIUtils.setRenderingHints( (Graphics2D) g );
+
+		super.paint( g, c );
+	}
+
+	@Override
+	protected void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text ) {
+		FlatButtonUI.paintText( g, b, textRect, text, b.isEnabled() ? b.getForeground() : disabledText );
+
+		if( b.getModel().isRollover() )
+			paintUnderline( g, textRect );
+	}
+
+	private void paintUnderline( Graphics g, Rectangle rect ) {
+		int descent = g.getFontMetrics().getDescent();
+
+		((Graphics2D)g).fill( new Rectangle2D.Float(
+			rect.x, (rect.y + rect.height) - descent + UIScale.scale( 1f ),
+			rect.width, UIScale.scale( 1f ) ) );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatMonthDownIcon.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics2D;
+import java.awt.Shape;
+import javax.swing.SwingConstants;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.icons.FlatAbstractIcon;
+import com.formdev.flatlaf.ui.FlatArrowButton;
+
+/**
+ * "month down" icon for {@link org.jdesktop.swingx.JXMonthView}.
+ *
+ * @uiDefault Component.arrowType				String	triangle (default) or chevron
+ * @uiDefault JXMonthView.arrowColor			Color
+ * @uiDefault JXMonthView.disabledArrowColor	Color
+ *
+ * @author Karl Tauber
+ */
+public class FlatMonthDownIcon
+	extends FlatAbstractIcon
+{
+	protected final boolean chevron = "chevron".equals( UIManager.getString( "Component.arrowType" ) );
+	protected final Color arrowColor = UIManager.getColor( "JXMonthView.arrowColor" );
+	protected final Color disabledArrowColor = UIManager.getColor( "JXMonthView.disabledArrowColor" );
+
+	private final int direction;
+
+	public FlatMonthDownIcon() {
+		this( SwingConstants.WEST );
+	}
+
+	protected FlatMonthDownIcon( int direction ) {
+		super( 20, 20, null );
+		this.direction = direction;
+	}
+
+	@Override
+	protected void paintIcon( Component c, Graphics2D g ) {
+		int h = chevron ? 4 : 5;
+		int w = chevron ? 8 : 9;
+		int x = Math.round( (width - h) / 2f );
+		int y = Math.round( (height - w) / 2f );
+
+		g.setColor( c.isEnabled() ? arrowColor : disabledArrowColor );
+		g.translate( x, y );
+		Shape arrowShape = FlatArrowButton.createArrowShape( direction, chevron, w, h );
+		if( chevron ) {
+			// chevron arrow
+			g.setStroke( new BasicStroke( 1f ) );
+			g.draw( arrowShape );
+		} else {
+			// triangle arrow
+			g.fill( arrowShape );
+		}
+		g.translate( -x, -y );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatMonthUpIcon.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import javax.swing.SwingConstants;
+
+/**
+ * "month up" icon for {@link org.jdesktop.swingx.JXMonthView}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatMonthUpIcon
+	extends FlatMonthDownIcon
+{
+	public FlatMonthUpIcon() {
+		super( SwingConstants.EAST );
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatMonthViewUI.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import java.awt.Insets;
+import java.util.Calendar;
+import javax.swing.JComponent;
+import javax.swing.border.Border;
+import javax.swing.border.CompoundBorder;
+import javax.swing.border.EmptyBorder;
+import javax.swing.plaf.ComponentUI;
+import org.jdesktop.swingx.JXMonthView;
+import org.jdesktop.swingx.plaf.basic.BasicMonthViewUI;
+import org.jdesktop.swingx.plaf.basic.CalendarRenderingHandler;
+import org.jdesktop.swingx.plaf.basic.CalendarState;
+import com.formdev.flatlaf.ui.FlatEmptyBorder;
+import com.formdev.flatlaf.ui.FlatLineBorder;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXMonthView}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatMonthViewUI
+	extends BasicMonthViewUI
+{
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatMonthViewUI();
+	}
+
+	@Override
+	protected CalendarRenderingHandler createRenderingHandler() {
+		return new FlatRenderingHandler();
+	}
+
+	//---- class FlatRenderingHandler -----------------------------------------
+
+	private static class FlatRenderingHandler
+		extends RenderingHandler
+	{
+		@Override
+		public JComponent prepareRenderingComponent( JXMonthView monthView, Calendar calendar,
+			CalendarState dayState )
+		{
+			JComponent c = super.prepareRenderingComponent( monthView, calendar, dayState );
+
+			int px = monthView.getBoxPaddingX();
+			int py = monthView.getBoxPaddingY();
+
+			// scale borders
+			Border border = null;
+			if( dayState == CalendarState.TITLE &&  monthView.isTraversable() ) {
+				Border b = c.getBorder();
+				if( b instanceof CompoundBorder && ((CompoundBorder)b).getInsideBorder() instanceof EmptyBorder )
+					border = new CompoundBorder( ((CompoundBorder)b).getOutsideBorder(), new FlatEmptyBorder( py * 2, 0, py * 2, 0 ) );
+			} else if( dayState == CalendarState.TODAY )
+				border = new FlatLineBorder( new Insets( py, px, py, px ), monthView.getTodayBackground() );
+
+			if( border == null )
+				border = new FlatEmptyBorder( py, px, py, px );
+			c.setBorder( border );
+
+			return c;
+		}
+	}
+}

flatlaf-swingx/src/main/java/com/formdev/flatlaf/swingx/ui/FlatTaskPaneUI.java

@@ -0,0 +1,274 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx.ui;
+
+import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.Shape;
+import java.awt.geom.Path2D;
+import java.awt.geom.Rectangle2D;
+import javax.swing.JComponent;
+import javax.swing.SwingConstants;
+import javax.swing.UIManager;
+import javax.swing.border.Border;
+import javax.swing.border.CompoundBorder;
+import javax.swing.border.EmptyBorder;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
+import org.jdesktop.swingx.JXTaskPane;
+import org.jdesktop.swingx.plaf.basic.BasicTaskPaneUI;
+import com.formdev.flatlaf.ui.FlatArrowButton;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXTaskPane}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatTaskPaneUI
+	extends BasicTaskPaneUI
+{
+	private Color background;
+
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatTaskPaneUI();
+	}
+
+	@Override
+	protected void installDefaults() {
+		if( group.getContentPane() instanceof JComponent ) {
+			// remove default SwingX content border, which may be still set when switching LaF
+			JComponent content = (JComponent) group.getContentPane();
+			Border contentBorder = content.getBorder();
+			if( contentBorder instanceof CompoundBorder &&
+				((CompoundBorder)contentBorder).getOutsideBorder() instanceof BasicTaskPaneUI.ContentPaneBorder &&
+				((CompoundBorder)contentBorder).getInsideBorder() instanceof EmptyBorder )
+			{
+				content.setBorder( null );
+			}
+
+			// set non-UIResource color to background to avoid that it is lost when switching LaF
+			background = UIManager.getColor( "TaskPane.background" );
+			Color bg = content.getBackground();
+			if( bg == null || bg instanceof UIResource ) {
+				content.setBackground( new Color( background.getRGB(), true ) );
+			}
+		}
+
+		roundHeight = FlatUIUtils.getUIInt( "TaskPane.roundHeight", UIManager.getInt( "Component.arc" ) );
+
+		super.installDefaults();
+	}
+
+	@Override
+	public void uninstallUI( JComponent c ) {
+		if( group.getContentPane() instanceof JComponent ) {
+			// uninstall our content border, because it does not implement UIResource,
+			// to alloy other LaF to install its own border
+			JComponent content = (JComponent) group.getContentPane();
+			if( content.getBorder() instanceof FlatContentPaneBorder )
+				content.setBorder( null );
+
+			// replace our non-UIResouce background with UIResouce background
+			// to allow next LaF to overwrite it
+			if( background.equals( content.getBackground() ) )
+				content.setBackground( background );
+			background = null;
+		}
+
+
+		super.uninstallUI( c );
+	}
+
+	@Override
+	protected int getTitleHeight( Component c ) {
+		return Math.max( super.getTitleHeight( c ), UIScale.scale( titleHeight ) );
+	}
+
+	@Override
+	protected int getRoundHeight() {
+		return UIScale.scale( roundHeight );
+	}
+
+	@Override
+	protected Border createPaneBorder() {
+		return new FlatPaneBorder();
+	}
+
+	@Override
+	protected Border createContentPaneBorder() {
+		return new FlatContentPaneBorder( UIManager.getColor( "TaskPane.borderColor" ),
+			UIManager.getInsets( "TaskPane.contentInsets" ) );
+	}
+
+	//---- class FlatContentPaneBorder ----------------------------------------
+
+	/**
+	 * The content pane border.
+	 */
+	private static class FlatContentPaneBorder
+		extends EmptyBorder
+	{
+		Color color;
+
+		FlatContentPaneBorder( Color color, Insets insets ) {
+			super( insets );
+			this.color = color;
+
+			// add space for the line border
+			left++;
+			right++;
+			bottom++;
+		}
+
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			if( color == null )
+				return;
+
+			FlatUIUtils.setRenderingHints( (Graphics2D) g );
+
+			g.setColor( color );
+
+			float lineWidth = UIScale.scale( 1f );
+			Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+			path.append( new Rectangle2D.Float( x, y, width, height ), false );
+			path.append( new Rectangle2D.Float( x + lineWidth, y, width - (lineWidth * 2), height - lineWidth ), false );
+			((Graphics2D)g).fill( path );
+		}
+
+		@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;
+		}
+	}
+
+	//---- class FlatPaneBorder -----------------------------------------------
+
+	private class FlatPaneBorder
+		extends PaneBorder
+	{
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			FlatUIUtils.setRenderingHints( (Graphics2D) g );
+
+			super.paintBorder( c, g, x, y, width, height );
+		}
+
+		@Override
+		protected void paintTitleBackground( JXTaskPane group, Graphics g ) {
+			int width = group.getWidth();
+			int height = getTitleHeight( group ) ;
+			float arc = UIScale.scale( (float) roundHeight );
+			float lineWidth = UIScale.scale( 1f );
+
+			// paint background
+			g.setColor( group.isSpecial() ? specialTitleBackground : titleBackgroundGradientStart );
+			((Graphics2D)g).fill( FlatUIUtils.createRoundRectanglePath( lineWidth, lineWidth,
+				width - (lineWidth * 2), height - (lineWidth * 2), arc - lineWidth, arc - lineWidth, 0, 0 ) );
+
+			// paint border
+			if( borderColor != null ) {
+				g.setColor( borderColor );
+				((Graphics2D)g).fill( FlatUIUtils.createRoundRectangle( 0, 0, width, height, lineWidth, arc, arc, 0, 0 ) );
+			}
+		}
+
+		@Override
+		protected void paintExpandedControls( JXTaskPane group, Graphics g, int x, int y, int width, int height ) {
+			g.setColor( getPaintColor( group ) );
+			paintChevronControls( group, g, x, y, width, height );
+		}
+
+		@Override
+		protected void paintChevronControls( JXTaskPane group, Graphics g, int x, int y, int width, int height ) {
+			Graphics2D g2 = (Graphics2D) g;
+
+			// scale chevron size
+			float cw = scale( 6f );
+			float ch = scale( 3f );
+
+			// create arrow shape
+			int direction = group.isCollapsed() ? SwingConstants.SOUTH : SwingConstants.NORTH;
+			Shape arrowShape = FlatArrowButton.createArrowShape( direction, true, cw, ch );
+
+			// fix position of controls
+			x = group.getComponentOrientation().isLeftToRight() ? (group.getWidth() - width - y) : y;
+
+			// compute chevron position
+			int cx = (int) (x + width / 2 - cw / 2);
+			int cy = (int) (y + (height / 2 - ch));
+			float offset = ch + UIScale.scale( 1f );
+
+			// set stroke with scaled width
+			g2.setStroke( new BasicStroke( scale( 1f ) ) );
+
+			// paint
+			g2.translate( cx, cy );
+			g2.draw( arrowShape );
+			g2.translate( 0, offset );
+			g2.draw( arrowShape );
+			g2.translate( -cx, -(cy + offset) );
+		}
+
+		@Override
+		protected void paintTitle( JXTaskPane group, Graphics g, Color textColor,
+			int x, int y, int width, int height )
+		{
+			// scale title position
+			int titleX = UIScale.scale( 3 );
+			int titleWidth = group.getWidth() - getTitleHeight(group) - titleX;
+			if( !group.getComponentOrientation().isLeftToRight() ) {
+				// right-to-left
+				titleX = group.getWidth() - titleX - titleWidth;
+			}
+
+			super.paintTitle( group, g, textColor, titleX, y, titleWidth, height );
+		}
+
+		@Override
+		protected void paintFocus( Graphics g, Color paintColor, int x, int y, int width, int height ) {
+			// scale focus rectangle
+			int sx = UIScale.scale( x );
+			int sy = UIScale.scale( y );
+			int swidth = width - (sx - x) * 2;
+			int sheight = height - (sy - y) * 2;
+
+			super.paintFocus( g, paintColor, sx, sy, swidth, sheight );
+		}
+
+		@Override
+		protected boolean isMouseOverBorder() {
+			return true;
+		}
+	}
+}

flatlaf-swingx/src/main/resources/META-INF/services/com.formdev.flatlaf.FlatDefaultsAddon

@@ -0,0 +1 @@
+com.formdev.flatlaf.swingx.FlatSwingXDefaultsAddon

flatlaf-swingx/src/main/resources/META-INF/services/org.jdesktop.swingx.plaf.LookAndFeelAddons

@@ -0,0 +1 @@
+com.formdev.flatlaf.swingx.FlatLookAndFeelAddons

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

@@ -0,0 +1,69 @@
+#
+# Copyright 2019 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
+#
+#     http://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.
+#
+
+#---- BusyLabel ----
+
+JXBusyLabel.baseColor=777777
+JXBusyLabel.highlightColor=e0e0e0
+
+
+#---- Header ----
+
+JXHeader.background=@background
+JXHeader.startBackground=4c5052
+
+
+#---- Hyperlink ----
+
+Hyperlink.linkColor=589df6
+Hyperlink.visitedColor=@@Hyperlink.linkColor
+Hyperlink.disabledText=@disabledText
+
+
+#---- MonthView ----
+
+JXMonthView.background=@textComponentBackground
+JXMonthView.monthStringBackground=4c5052
+JXMonthView.monthStringForeground=@foreground
+JXMonthView.daysOfTheWeekForeground=aaaaaa
+JXMonthView.weekOfTheYearForeground=888888
+JXMonthView.unselectableDayForeground=E05555
+JXMonthView.selectedBackground=@selectionBackground
+JXMonthView.flaggedDayForeground=E05555
+JXMonthView.leadingDayForeground=@disabledText
+JXMonthView.trailingDayForeground=@disabledText
+JXMonthView.arrowColor=@foreground
+JXMonthView.disabledArrowColor=@disabledText
+
+
+#---- TaskPaneContainer ----
+
+TaskPaneContainer.background=3E434C
+TaskPaneContainer.border=10,10,10,10
+
+
+#---- TaskPane ----
+
+TaskPane.background=@background
+TaskPane.borderColor=@@Button.borderColor
+TaskPane.contentInsets=10,10,10,10
+
+TaskPane.titleBackgroundGradientStart=4c5052
+TaskPane.titleForeground=@foreground
+TaskPane.titleOver=888888
+TaskPane.specialTitleBackground=afafaf
+TaskPane.specialTitleForeground=222222
+TaskPane.specialTitleOver=666666

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

@@ -0,0 +1,35 @@
+#
+# Copyright 2019 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
+#
+#     http://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.
+#
+
+#---- UI delegates ----
+
+BusyLabelUI=com.formdev.flatlaf.swingx.ui.FlatBusyLabelUI
+DatePickerUI=com.formdev.flatlaf.swingx.ui.FlatDatePickerUI
+HeaderUI=com.formdev.flatlaf.swingx.ui.FlatHeaderUI
+HyperlinkUI=com.formdev.flatlaf.swingx.ui.FlatHyperlinkUI
+MonthViewUI=com.formdev.flatlaf.swingx.ui.FlatMonthViewUI
+swingx/TaskPaneUI=com.formdev.flatlaf.swingx.ui.FlatTaskPaneUI
+
+
+#---- DatePicker ----
+
+JXDatePicker.border=com.formdev.flatlaf.swingx.ui.FlatDatePickerBorder
+
+
+#---- MonthView ----
+
+JXMonthView.monthDownFileName={icon}com.formdev.flatlaf.swingx.ui.FlatMonthDownIcon
+JXMonthView.monthUpFileName={icon}com.formdev.flatlaf.swingx.ui.FlatMonthUpIcon

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

@@ -0,0 +1,69 @@
+#
+# Copyright 2019 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
+#
+#     http://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.
+#
+
+#---- BusyLabel ----
+
+JXBusyLabel.baseColor=c4c4c4
+JXBusyLabel.highlightColor=808080
+
+
+#---- Header ----
+
+JXHeader.background=@background
+JXHeader.startBackground=ffffff
+
+
+#---- Hyperlink ----
+
+Hyperlink.linkColor=4a78c2
+Hyperlink.visitedColor=@@Hyperlink.linkColor
+Hyperlink.disabledText=@disabledText
+
+
+#---- MonthView ----
+
+JXMonthView.background=@textComponentBackground
+JXMonthView.monthStringBackground=dfdfdf
+JXMonthView.monthStringForeground=@foreground
+JXMonthView.daysOfTheWeekForeground=444444
+JXMonthView.weekOfTheYearForeground=666666
+JXMonthView.unselectableDayForeground=E02222
+JXMonthView.selectedBackground=B9CEF8
+JXMonthView.flaggedDayForeground=E02222
+JXMonthView.leadingDayForeground=@disabledText
+JXMonthView.trailingDayForeground=@disabledText
+JXMonthView.arrowColor=@foreground
+JXMonthView.disabledArrowColor=@disabledText
+
+
+#---- TaskPaneContainer ----
+
+TaskPaneContainer.background=E6EBF0
+TaskPaneContainer.border=10,10,10,10
+
+
+#---- TaskPane ----
+
+TaskPane.background=@background
+TaskPane.borderColor=@@Button.borderColor
+TaskPane.contentInsets=10,10,10,10
+
+TaskPane.titleBackgroundGradientStart=dfdfdf
+TaskPane.titleForeground=222222
+TaskPane.titleOver=666666
+TaskPane.specialTitleBackground=afafaf
+TaskPane.specialTitleForeground=222222
+TaskPane.specialTitleOver=666666

flatlaf-swingx/src/test/java/com/formdev/flatlaf/swingx/FlatSwingXTest.java

@@ -0,0 +1,321 @@
+/*
+ * Copyright 2019 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
+ *
+ *     http://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.swingx;
+
+import java.awt.*;
+import java.util.Calendar;
+import java.util.Date;
+import javax.swing.*;
+import net.miginfocom.swing.*;
+import org.jdesktop.swingx.*;
+import com.formdev.flatlaf.FlatTestFrame;
+
+/**
+ * @author Karl Tauber
+ */
+public class FlatSwingXTest
+	extends JPanel
+{
+	public static void main( String[] args ) {
+		FlatTestFrame frame = FlatTestFrame.create( args, "FlatSwingXTest" );
+		frame.showFrame( new FlatSwingXTest() );
+	}
+
+	FlatSwingXTest() {
+		initComponents();
+
+		Calendar calendar = Calendar.getInstance();
+
+		calendar.set( Calendar.DAY_OF_MONTH, 2 );
+		monthView1.setSelectionDate( calendar.getTime() );
+
+		calendar.set( Calendar.DAY_OF_MONTH, 9 );
+		monthView1.setFlaggedDates( calendar.getTime() );
+
+		calendar.set( Calendar.DAY_OF_MONTH, 16 );
+		monthView1.setUnselectableDates( calendar.getTime() );
+	}
+
+	private void busyChanged() {
+		boolean busy = busyCheckBox.isSelected();
+		xBusyLabel1.setBusy( busy );
+		xBusyLabel2.setBusy( busy );
+	}
+
+	private void initComponents() {
+		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
+		JLabel label1 = new JLabel();
+		JLabel label3 = new JLabel();
+		JLabel datePickerLabel = new JLabel();
+		JXDatePicker xDatePicker1 = new JXDatePicker();
+		JXDatePicker xDatePicker2 = new JXDatePicker();
+		JLabel label4 = new JLabel();
+		JLabel label5 = new JLabel();
+		JXDatePicker xDatePicker3 = new JXDatePicker();
+		JXDatePicker xDatePicker4 = new JXDatePicker();
+		JLabel monthViewLabel = new JLabel();
+		monthView1 = new JXMonthView();
+		monthView2 = new JXMonthView();
+		JLabel hyperlinkLabel = new JLabel();
+		JXHyperlink xHyperlink1 = new JXHyperlink();
+		JXHyperlink xHyperlink2 = new JXHyperlink();
+		JLabel label2 = new JLabel();
+		xBusyLabel1 = new JXBusyLabel();
+		xBusyLabel2 = new JXBusyLabel();
+		busyCheckBox = new JCheckBox();
+		JPanel panel2 = new JPanel();
+		JLabel taskPaneContainerLabel = new JLabel();
+		JLabel taskPaneLabel = new JLabel();
+		JScrollPane scrollPane1 = new JScrollPane();
+		JXTaskPaneContainer xTaskPaneContainer1 = new JXTaskPaneContainer();
+		JXTaskPane xTaskPane3 = new JXTaskPane();
+		JXHyperlink xHyperlink3 = new JXHyperlink();
+		JXHyperlink xHyperlink4 = new JXHyperlink();
+		JXHyperlink xHyperlink5 = new JXHyperlink();
+		JXTaskPane xTaskPane4 = new JXTaskPane();
+		JXHyperlink xHyperlink6 = new JXHyperlink();
+		JXHyperlink xHyperlink7 = new JXHyperlink();
+		JXTaskPane xTaskPane5 = new JXTaskPane();
+		JXHyperlink xHyperlink8 = new JXHyperlink();
+		JXTaskPane xTaskPane6 = new JXTaskPane();
+		JXHyperlink xHyperlink9 = new JXHyperlink();
+		JXHyperlink xHyperlink10 = new JXHyperlink();
+		JLabel headerLabel = new JLabel();
+		JXHeader xHeader1 = new JXHeader();
+
+		//======== this ========
+		setLayout(new MigLayout(
+			"hidemode 3,ltr",
+			// columns
+			"[left]" +
+			"[]" +
+			"[]" +
+			"[fill]",
+			// rows
+			"[]0" +
+			"[]" +
+			"[]0" +
+			"[]" +
+			"[]" +
+			"[]" +
+			"[]" +
+			"[]"));
+
+		//---- label1 ----
+		label1.setText("enabled");
+		add(label1, "cell 1 0");
+
+		//---- label3 ----
+		label3.setText("disabled");
+		add(label3, "cell 2 0");
+
+		//---- datePickerLabel ----
+		datePickerLabel.setText("JXDatePicker:");
+		add(datePickerLabel, "cell 0 1");
+		add(xDatePicker1, "cell 1 1");
+
+		//---- xDatePicker2 ----
+		xDatePicker2.setEnabled(false);
+		add(xDatePicker2, "cell 2 1");
+
+		//---- label4 ----
+		label4.setText("not editable");
+		add(label4, "cell 1 2");
+
+		//---- label5 ----
+		label5.setText("not editable disabled");
+		add(label5, "cell 2 2");
+
+		//---- xDatePicker3 ----
+		xDatePicker3.setEditable(false);
+		add(xDatePicker3, "cell 1 3");
+
+		//---- xDatePicker4 ----
+		xDatePicker4.setEnabled(false);
+		xDatePicker4.setEditable(false);
+		add(xDatePicker4, "cell 2 3");
+
+		//---- monthViewLabel ----
+		monthViewLabel.setText("JXMonthView:");
+		add(monthViewLabel, "cell 0 4,aligny top,growy 0");
+
+		//---- monthView1 ----
+		monthView1.setTraversable(true);
+		monthView1.setShowingLeadingDays(true);
+		monthView1.setShowingTrailingDays(true);
+		monthView1.setShowingWeekNumber(true);
+		add(monthView1, "cell 1 4");
+
+		//---- monthView2 ----
+		monthView2.setTraversable(true);
+		monthView2.setShowingLeadingDays(true);
+		monthView2.setShowingTrailingDays(true);
+		monthView2.setShowingWeekNumber(true);
+		monthView2.setEnabled(false);
+		add(monthView2, "cell 2 4");
+
+		//---- hyperlinkLabel ----
+		hyperlinkLabel.setText("JXHyperlink:");
+		add(hyperlinkLabel, "cell 0 5");
+
+		//---- xHyperlink1 ----
+		xHyperlink1.setText("enabled");
+		add(xHyperlink1, "cell 1 5");
+
+		//---- xHyperlink2 ----
+		xHyperlink2.setText("disabled");
+		xHyperlink2.setEnabled(false);
+		add(xHyperlink2, "cell 2 5");
+
+		//---- label2 ----
+		label2.setText("JXBusyLabel:");
+		add(label2, "cell 0 6");
+
+		//---- xBusyLabel1 ----
+		xBusyLabel1.setText("enabled");
+		add(xBusyLabel1, "cell 1 6");
+
+		//---- xBusyLabel2 ----
+		xBusyLabel2.setText("disabled");
+		xBusyLabel2.setEnabled(false);
+		add(xBusyLabel2, "cell 2 6,growx");
+
+		//---- busyCheckBox ----
+		busyCheckBox.setText("busy");
+		busyCheckBox.setMnemonic('B');
+		busyCheckBox.addActionListener(e -> busyChanged());
+		add(busyCheckBox, "cell 2 6");
+
+		//======== panel2 ========
+		{
+			panel2.setLayout(new MigLayout(
+				"ltr,insets 0,hidemode 3",
+				// columns
+				"[fill]",
+				// rows
+				"[]" +
+				"[]" +
+				"[]"));
+
+			//---- taskPaneContainerLabel ----
+			taskPaneContainerLabel.setText("JXTaskPaneContainer:");
+			panel2.add(taskPaneContainerLabel, "cell 0 0");
+
+			//---- taskPaneLabel ----
+			taskPaneLabel.setText("JXTaskPane:");
+			panel2.add(taskPaneLabel, "cell 0 1");
+
+			//======== scrollPane1 ========
+			{
+
+				//======== xTaskPaneContainer1 ========
+				{
+
+					//======== xTaskPane3 ========
+					{
+						xTaskPane3.setTitle("Basic Tasks");
+						Container xTaskPane3ContentPane = xTaskPane3.getContentPane();
+
+						//---- xHyperlink3 ----
+						xHyperlink3.setText("New");
+						xTaskPane3ContentPane.add(xHyperlink3);
+
+						//---- xHyperlink4 ----
+						xHyperlink4.setText("Open");
+						xTaskPane3ContentPane.add(xHyperlink4);
+
+						//---- xHyperlink5 ----
+						xHyperlink5.setText("Save");
+						xTaskPane3ContentPane.add(xHyperlink5);
+					}
+					xTaskPaneContainer1.add(xTaskPane3);
+
+					//======== xTaskPane4 ========
+					{
+						xTaskPane4.setTitle("Other Tasks");
+						xTaskPane4.setIcon(UIManager.getIcon("Tree.closedIcon"));
+						Container xTaskPane4ContentPane = xTaskPane4.getContentPane();
+
+						//---- xHyperlink6 ----
+						xHyperlink6.setText("Duplicate");
+						xTaskPane4ContentPane.add(xHyperlink6);
+
+						//---- xHyperlink7 ----
+						xHyperlink7.setText("Delete");
+						xTaskPane4ContentPane.add(xHyperlink7);
+					}
+					xTaskPaneContainer1.add(xTaskPane4);
+
+					//======== xTaskPane5 ========
+					{
+						xTaskPane5.setTitle("Special Tasks");
+						xTaskPane5.setSpecial(true);
+						Container xTaskPane5ContentPane = xTaskPane5.getContentPane();
+
+						//---- xHyperlink8 ----
+						xHyperlink8.setText("Go to space");
+						xTaskPane5ContentPane.add(xHyperlink8);
+					}
+					xTaskPaneContainer1.add(xTaskPane5);
+
+					//======== xTaskPane6 ========
+					{
+						xTaskPane6.setTitle("Collapsed");
+						xTaskPane6.setCollapsed(true);
+						Container xTaskPane6ContentPane = xTaskPane6.getContentPane();
+
+						//---- xHyperlink9 ----
+						xHyperlink9.setText("text");
+						xTaskPane6ContentPane.add(xHyperlink9);
+
+						//---- xHyperlink10 ----
+						xHyperlink10.setText("text");
+						xTaskPane6ContentPane.add(xHyperlink10);
+					}
+					xTaskPaneContainer1.add(xTaskPane6);
+				}
+				scrollPane1.setViewportView(xTaskPaneContainer1);
+			}
+			panel2.add(scrollPane1, "cell 0 2,width 150,height 350");
+		}
+		add(panel2, "cell 3 0 1 8,aligny top,growy 0");
+
+		//---- headerLabel ----
+		headerLabel.setText("JXHeader:");
+		add(headerLabel, "cell 0 7,aligny top,growy 0");
+
+		//---- xHeader1 ----
+		xHeader1.setTitle("Title");
+		xHeader1.setDescription("Description\nMore description");
+		xHeader1.setIcon(new ImageIcon(getClass().getResource("/org/jdesktop/swingx/plaf/windows/resources/tipoftheday.png")));
+		add(xHeader1, "cell 1 7 2 1,width 200");
+		// JFormDesigner - End of component initialization  //GEN-END:initComponents
+
+		xDatePicker1.setDate( new Date() );
+		xDatePicker2.setDate( new Date() );
+		xDatePicker3.setDate( new Date() );
+		xDatePicker4.setDate( new Date() );
+	}
+
+	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JXMonthView monthView1;
+	private JXMonthView monthView2;
+	private JXBusyLabel xBusyLabel1;
+	private JXBusyLabel xBusyLabel2;
+	private JCheckBox busyCheckBox;
+	// JFormDesigner - End of variables declaration  //GEN-END:variables
+}

flatlaf-swingx/src/test/java/com/formdev/flatlaf/swingx/FlatSwingXTest.jfd

@@ -0,0 +1,254 @@
+JFDML JFormDesigner: "7.0.0.0.194" Java: "11.0.2" encoding: "UTF-8"
+
+new FormModel {
+	contentType: "form/swing"
+	root: new FormRoot {
+		auxiliary() {
+			"JavaCodeGenerator.defaultVariableLocal": true
+		}
+		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+			"$layoutConstraints": "hidemode 3,ltr"
+			"$columnConstraints": "[left][][][fill]"
+			"$rowConstraints": "[]0[][]0[][][][][]"
+		} ) {
+			name: "this"
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label1"
+				"text": "enabled"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 0"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label3"
+				"text": "disabled"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 0"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "datePickerLabel"
+				"text": "JXDatePicker:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 1"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXDatePicker" ) {
+				name: "xDatePicker1"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 1"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXDatePicker" ) {
+				name: "xDatePicker2"
+				"enabled": false
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label4"
+				"text": "not editable"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label5"
+				"text": "not editable disabled"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 2"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXDatePicker" ) {
+				name: "xDatePicker3"
+				"editable": false
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 3"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXDatePicker" ) {
+				name: "xDatePicker4"
+				"enabled": false
+				"editable": false
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 3"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "monthViewLabel"
+				"text": "JXMonthView:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4,aligny top,growy 0"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXMonthView" ) {
+				name: "monthView1"
+				"traversable": true
+				"showingLeadingDays": true
+				"showingTrailingDays": true
+				"showingWeekNumber": true
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 4"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXMonthView" ) {
+				name: "monthView2"
+				"traversable": true
+				"showingLeadingDays": true
+				"showingTrailingDays": true
+				"showingWeekNumber": true
+				"enabled": false
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 4"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "hyperlinkLabel"
+				"text": "JXHyperlink:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+				name: "xHyperlink1"
+				"text": "enabled"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 5"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+				name: "xHyperlink2"
+				"text": "disabled"
+				"enabled": false
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 5"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label2"
+				"text": "JXBusyLabel:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 6"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXBusyLabel" ) {
+				name: "xBusyLabel1"
+				"text": "enabled"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 6"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXBusyLabel" ) {
+				name: "xBusyLabel2"
+				"text": "disabled"
+				"enabled": false
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 6,growx"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "busyCheckBox"
+				"text": "busy"
+				"mnemonic": 66
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "busyChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 6"
+			} )
+			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+				"$columnConstraints": "[fill]"
+				"$rowConstraints": "[][][]"
+				"$layoutConstraints": "ltr,insets 0,hidemode 3"
+			} ) {
+				name: "panel2"
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "taskPaneContainerLabel"
+					"text": "JXTaskPaneContainer:"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "taskPaneLabel"
+					"text": "JXTaskPane:"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1"
+				} )
+				add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
+					name: "scrollPane1"
+					add( new FormContainer( "org.jdesktop.swingx.JXTaskPaneContainer", new FormLayoutManager( class com.jformdesigner.runtime.GenericIndexLayout ) ) {
+						name: "xTaskPaneContainer1"
+						add( new FormContainer( "org.jdesktop.swingx.JXTaskPane", new FormLayoutManager( class com.jformdesigner.runtime.GenericIndexLayout ) ) {
+							name: "xTaskPane3"
+							"title": "Basic Tasks"
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink3"
+								"text": "New"
+							} )
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink4"
+								"text": "Open"
+							} )
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink5"
+								"text": "Save"
+							} )
+						} )
+						add( new FormContainer( "org.jdesktop.swingx.JXTaskPane", new FormLayoutManager( class com.jformdesigner.runtime.GenericIndexLayout ) ) {
+							name: "xTaskPane4"
+							"title": "Other Tasks"
+							"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink6"
+								"text": "Duplicate"
+							} )
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink7"
+								"text": "Delete"
+							} )
+						} )
+						add( new FormContainer( "org.jdesktop.swingx.JXTaskPane", new FormLayoutManager( class com.jformdesigner.runtime.GenericIndexLayout ) ) {
+							name: "xTaskPane5"
+							"title": "Special Tasks"
+							"special": true
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink8"
+								"text": "Go to space"
+							} )
+						} )
+						add( new FormContainer( "org.jdesktop.swingx.JXTaskPane", new FormLayoutManager( class com.jformdesigner.runtime.GenericIndexLayout ) ) {
+							name: "xTaskPane6"
+							"title": "Collapsed"
+							"collapsed": true
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink9"
+								"text": "text"
+							} )
+							add( new FormComponent( "org.jdesktop.swingx.JXHyperlink" ) {
+								name: "xHyperlink10"
+								"text": "text"
+							} )
+						} )
+					} )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 2,width 150,height 350"
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 3 0 1 8,aligny top,growy 0"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "headerLabel"
+				"text": "JXHeader:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 7,aligny top,growy 0"
+			} )
+			add( new FormComponent( "org.jdesktop.swingx.JXHeader" ) {
+				name: "xHeader1"
+				"title": "Title"
+				"description": "Description\nMore description"
+				"icon": new com.jformdesigner.model.SwingIcon( 0, "/org/jdesktop/swingx/plaf/windows/resources/tipoftheday.png" )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 7 2 1,width 200"
+			} )
+		}, new FormLayoutConstraints( null ) {
+			"location": new java.awt.Point( 0, 0 )
+			"size": new java.awt.Dimension( 700, 600 )
+		} )
+	}
+}

flatlaf-swingx/src/test/resources/com/formdev/flatlaf/swingx/FlatTestLaf.properties

@@ -0,0 +1,71 @@
+#
+# Copyright 2019 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
+#
+#     http://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.
+#
+
+#---- BusyLabel ----
+
+JXBusyLabel.baseColor=00ff00
+JXBusyLabel.highlightColor=ff0000
+
+
+#---- Header ----
+
+JXHeader.background=ff8888
+JXHeader.startBackground=ffcccc
+JXHeader.titleForeground=0000ff
+JXHeader.descriptionForeground=ff0000
+
+
+#---- Hyperlink ----
+
+Hyperlink.linkColor=ff0000
+Hyperlink.visitedColor=0000ff
+Hyperlink.disabledText=000088
+
+
+#---- MonthView ----
+
+JXMonthView.background=@textComponentBackground
+JXMonthView.monthStringBackground=00ff00
+JXMonthView.monthStringForeground=0000ff
+JXMonthView.daysOfTheWeekForeground=00ff00
+JXMonthView.weekOfTheYearForeground=0000ff
+JXMonthView.unselectableDayForeground=0000ff
+JXMonthView.selectedBackground=aaffaa
+JXMonthView.flaggedDayForeground=00ffff
+JXMonthView.leadingDayForeground=c0c0c0
+JXMonthView.trailingDayForeground=c0c0c0
+JXMonthView.arrowColor=0000ff
+JXMonthView.disabledArrowColor=ABABAB
+
+
+#---- TaskPaneContainer ----
+
+TaskPaneContainer.background=ff8888
+TaskPaneContainer.border=10,10,10,10
+
+
+#---- TaskPane ----
+
+TaskPane.background=00ff00
+TaskPane.borderColor=0000ff
+TaskPane.contentInsets=10,10,10,10
+
+TaskPane.titleBackgroundGradientStart=ffff00
+TaskPane.titleForeground=ff00ff
+TaskPane.titleOver=0000aa
+TaskPane.specialTitleBackground=00ffff
+TaskPane.specialTitleForeground=444444
+TaskPane.specialTitleOver=dd0000

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

settings.gradle.kts

@@ -17,4 +17,5 @@
 rootProject.name = "FlatLaf"
 
 include( "flatlaf-core" )
+include( "flatlaf-swingx" )
 include( "flatlaf-demo" )