build.gradle.kts:

- added version info to manifest
- added META-INF/LICENSE
- Java source/target compatibility now defined in single location
- defined source file encoding for java compiler

.travis.yml

@@ -19,11 +19,21 @@ before_install:
   - ./gradlew --version
   - java -version
 
-deploy:
-  provider: script
-  script: ./gradlew bintrayUpload
-  skip_cleanup: true # to upload artifacts created during the build
-  on:
-    branch: master
-    jdk: openjdk11
-    tags: true
+stages:
+  - name: test
+  - name: snapshot
+    if: branch = master AND type IN (push) AND tag IS blank
+  - name: release
+    if: type IN (push) AND tag IS present
+
+jobs:
+  include:
+    # publish snapshot to oss.jfrog.org
+    - stage: snapshot
+      jdk: openjdk11
+      script: ./gradlew artifactoryPublish
+
+    # release a new stable version to bintray
+    - stage: release
+      jdk: openjdk11
+      script: ./gradlew bintrayUpload -Drelease=true

CHANGELOG.md

@@ -1,6 +1,29 @@
 FlatLaf Change Log
 ==================
 
+## 0.27
+
+- Support `JInternalFrame` and `JDesktopPane`. (issues #39 and #11)
+- Table: Support positioning the column sort arrow in header right, left, top or
+  bottom. (issue #34)
+- ProgressBar: Fixed visual artifacts in indeterminate mode, on HiDPI screens at
+  125%, 150% and 175% scaling, when the progress moves around.
+- TabbedPane: New option to allow tab separators to take full height (to enable
+  use `UIManager.put( "TabbedPane.tabSeparatorsFullHeight", true );`). (issue
+  #59, PR #62)
+- CheckBox and RadioButton: Do not fill background if `contentAreaFilled` is
+  `false`. (issue #58, PR #63)
+- ToggleButton: Make toggle button square if it has an icon but no text or text
+  is "..." or a single character.
+- ToolBar: No longer use special rollover border for buttons in toolbar. (issue
+  #36)
+- ToolBar: Added empty space around buttons in toolbar and toolbar itself (see
+  UI default values `Button.toolbar.spacingInsets` and `ToolBar.borderMargins`).
+  (issue #56)
+- Fixed "illegal reflective access operation" warning on macOS when using Java
+  12 or later. (issue #60, PR #61)
+
+
 ## 0.26
 
 - Menus:

README.md

@@ -52,6 +52,19 @@ 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)
 
 
+### Snapshots
+
+FlatLaf snapshot binaries are available in
+[JFrog Artifactory](https://oss.jfrog.org/artifactory/oss-snapshot-local/com/formdev/).
+To access the latest snapshot, change the FlatLaf version(s) in the dependencies
+to `<version>-SNAPSHOT` (e.g. `0.27-SNAPSHOT`) and add the repository
+`https://oss.jfrog.org/artifactory/oss-snapshot-local` to your build (see
+[Maven](https://maven.apache.org/guides/mini/guide-multiple-repositories.html)
+and
+[Gradle](https://docs.gradle.org/current/userguide/declaring_repositories.html#sec:declaring_custom_repository)
+docs).
+
+
 Addons
 ------
 
@@ -59,6 +72,18 @@ Addons
 - [JIDE Common Layer](flatlaf-jide-oss)
 
 
+Projects using FlatLaf
+----------------------
+
+- [NetBeans](https://netbeans.apache.org/) 11.3
+- [jclasslib bytecode viewer](https://github.com/ingokegel/jclasslib) 5.5
+- [j-lawyer](https://github.com/jlawyerorg/j-lawyer-org)
+- [Rest Suite](https://github.com/supanadit/restsuite)
+- [ControllerBuddy](https://github.com/bwRavencl/ControllerBuddy)
+- [SpringRemote](https://github.com/HaleyWang/SpringRemote)
+- and more...
+
+
 Documentation
 -------------
 

build.gradle.kts

@@ -14,9 +14,14 @@
  * limitations under the License.
  */
 
-version = "0.26"
+val releaseVersion = "0.27"
+val developmentVersion = "0.28-SNAPSHOT"
+
+version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion
 
 allprojects {
+	version = rootProject.version
+
 	repositories {
 		jcenter()
 	}
@@ -33,3 +38,39 @@ println( "FlatLaf Version: ${version}" )
 println( "Gradle ${gradle.gradleVersion} at ${gradle.gradleHomeDir}" )
 println( "Java ${System.getProperty( "java.version" )}" )
 println()
+
+
+extra["bintray.user"] = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
+extra["bintray.key"]  = System.getenv( "BINTRAY_KEY" )  ?: System.getProperty( "bintray.key" )
+
+// if true, do not upload to bintray
+extra["bintray.dryRun"] = false
+
+// if true, uploaded artifacts are visible to all
+// if false, only visible to owner when logged into bintray
+extra["bintray.publish"] = true
+
+
+allprojects {
+	tasks {
+		withType<JavaCompile>().configureEach {
+			sourceCompatibility = "1.8"
+			targetCompatibility = "1.8"
+
+			options.encoding = "ISO-8859-1"
+		}
+
+		withType<Jar>().configureEach {
+			// manifest for all created JARs
+			manifest.attributes(mapOf(
+				"Implementation-Vendor" to "FormDev Software GmbH",
+				"Implementation-Copyright" to "Copyright (C) ${java.time.LocalDate.now().year} FormDev Software GmbH. All rights reserved.",
+				"Implementation-Version" to project.version))
+
+			// add META-INF/LICENSE to all created JARs
+			from("${rootDir}/LICENSE") {
+				into("META-INF")
+			}
+		}
+	}
+}

flatlaf-core/build.gradle.kts

@@ -14,12 +14,11 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
 	`maven-publish`
-	id( "com.jfrog.bintray" ) version "1.8.4"
+	id( "com.jfrog.bintray" )
+	id( "com.jfrog.artifactory" )
 }
 
 if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
@@ -34,11 +33,6 @@ if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
 	}
 }
 
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 tasks {
 	assemble {
 		dependsOn(
@@ -128,8 +122,8 @@ publishing {
 }
 
 bintray {
-	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
-	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+	user = rootProject.extra["bintray.user"] as String?
+	key = rootProject.extra["bintray.key"] as String?
 
 	setPublications( "maven" )
 
@@ -143,6 +137,29 @@ bintray {
 			name = project.version.toString()
 		}
 
-		publish = true
+		publish = rootProject.extra["bintray.publish"] as Boolean
+		dryRun = rootProject.extra["bintray.dryRun"] as Boolean
 	}
 }
+
+artifactory {
+	setContextUrl( "https://oss.jfrog.org" )
+
+	publish( closureOf<org.jfrog.gradle.plugin.artifactory.dsl.PublisherConfig> {
+		repository( delegateClosureOf<groovy.lang.GroovyObject> {
+			setProperty( "repoKey", "oss-snapshot-local" )
+			setProperty( "username", rootProject.extra["bintray.user"] as String? )
+			setProperty( "password", rootProject.extra["bintray.key"] as String? )
+		} )
+
+		defaults( delegateClosureOf<groovy.lang.GroovyObject> {
+			invokeMethod( "publications", "maven" )
+			setProperty( "publishArtifacts", true )
+			setProperty( "publishPom", true )
+		} )
+	} )
+
+	resolve( delegateClosureOf<org.jfrog.gradle.plugin.artifactory.dsl.ResolverConfig> {
+		setProperty( "repoKey", "jcenter" )
+	} )
+}

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

@@ -29,6 +29,7 @@ import java.awt.event.KeyEvent;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.lang.ref.WeakReference;
+import java.lang.reflect.Method;
 import java.util.List;
 import java.util.function.Consumer;
 import java.util.logging.Level;
@@ -194,7 +195,11 @@ public abstract class FlatLaf
 				// use Mac Aqua LaF as base
 				String aquaLafClassName = "com.apple.laf.AquaLookAndFeel";
 				try {
-					base = (BasicLookAndFeel) Class.forName( aquaLafClassName ).newInstance();
+					if( SystemInfo.IS_JAVA_9_OR_LATER ) {
+						Method m = UIManager.class.getMethod( "createLookAndFeel", String.class );
+						base = (BasicLookAndFeel) m.invoke( null, "Mac OS X" );
+					} else
+						base = (BasicLookAndFeel) Class.forName( aquaLafClassName ).newInstance();
 				} catch( Exception ex ) {
 					LOG.log( Level.SEVERE, "FlatLaf: Failed to initialize base look and feel '" + aquaLafClassName + "'.", ex );
 					throw new IllegalStateException();
@@ -294,10 +299,9 @@ public abstract class FlatLaf
 
 		// override fonts
 		for( Object key : defaults.keySet() ) {
-			if( key instanceof String && ((String)key).endsWith( ".font" ) )
+			if( key instanceof String && (((String)key).endsWith( ".font" ) || ((String)key).endsWith( "Font" )) )
 				defaults.put( key, uiFont );
 		}
-		defaults.put( "MenuItem.acceleratorFont", uiFont );
 
 		// use smaller font for progress bar
 		defaults.put( "ProgressBar.font", UIScale.scaleFont( uiFont, 0.85f ) );

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

@@ -221,7 +221,8 @@ class UIDefaultsLoader
 		return resolveValue( properties, newValue );
 	}
 
-	private enum ValueType { UNKNOWN, STRING, INTEGER, FLOAT, BORDER, ICON, INSETS, DIMENSION, COLOR, SCALEDINTEGER, INSTANCE, CLASS }
+	private enum ValueType { UNKNOWN, STRING, CHARACTER, INTEGER, FLOAT, BORDER, ICON, INSETS, DIMENSION, COLOR,
+		SCALEDINTEGER, SCALEDFLOAT, SCALEDINSETS, SCALEDDIMENSION, INSTANCE, CLASS }
 
 	static Object parseValue( String key, String value ) {
 		return parseValue( key, value, v -> v, Collections.emptyList() );
@@ -284,6 +285,8 @@ class UIDefaultsLoader
 				valueType = ValueType.DIMENSION;
 			else if( key.endsWith( "Width" ) || key.endsWith( "Height" ) )
 				valueType = ValueType.INTEGER;
+			else if( key.endsWith( "Char" ) )
+				valueType = ValueType.CHARACTER;
 			else if( key.endsWith( "UI" ) )
 				valueType = ValueType.STRING;
 		}
@@ -291,6 +294,7 @@ class UIDefaultsLoader
 		// parse value
 		switch( valueType ) {
 			case STRING:		return value;
+			case CHARACTER:		return parseCharacter( value );
 			case INTEGER:		return parseInteger( value, true );
 			case FLOAT:			return parseFloat( value, true );
 			case BORDER:		return parseBorder( value, resolver, addonClassLoaders );
@@ -299,6 +303,9 @@ class UIDefaultsLoader
 			case DIMENSION:		return parseDimension( value );
 			case COLOR:			return parseColorOrFunction( value, resolver, true );
 			case SCALEDINTEGER:	return parseScaledInteger( value );
+			case SCALEDFLOAT:	return parseScaledFloat( value );
+			case SCALEDINSETS:	return parseScaledInsets( value );
+			case SCALEDDIMENSION:return parseScaledDimension( value );
 			case INSTANCE:		return parseInstance( value, addonClassLoaders );
 			case CLASS:			return parseClass( value, addonClassLoaders );
 			case UNKNOWN:
@@ -595,6 +602,12 @@ class UIDefaultsLoader
 		return val;
 	}
 
+	private static Character parseCharacter( String value ) {
+		if( value.length() != 1 )
+			throw new IllegalArgumentException( "invalid character '" + value + "'" );
+		return value.charAt( 0 );
+	}
+
 	private static Integer parseInteger( String value, int min, int max ) {
 		Integer integer = parseInteger( value, true );
 		if( integer.intValue() < min || integer.intValue() > max )
@@ -629,6 +642,27 @@ class UIDefaultsLoader
 		};
 	}
 
+	private static ActiveValue parseScaledFloat( String value ) {
+		float val = parseFloat( value, true );
+		return (ActiveValue) t -> {
+			return UIScale.scale( val );
+		};
+	}
+
+	private static ActiveValue parseScaledInsets( String value ) {
+		Insets insets = parseInsets( value );
+		return (ActiveValue) t -> {
+			return UIScale.scale( insets );
+		};
+	}
+
+	private static ActiveValue parseScaledDimension( String value ) {
+		Dimension dimension = parseDimension( value );
+		return (ActiveValue) t -> {
+			return UIScale.scale( dimension );
+		};
+	}
+
 	/**
 	 * Split string and trim parts.
 	 */

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

@@ -47,7 +47,7 @@ public class FlatAscendingSortIcon
 		g.setColor( sortIconColor );
 		if( chevron ) {
 			// chevron arrow
-			Path2D path = FlatUIUtils.createPath( false, 1,5, 5,1, 9,5 );
+			Path2D path = FlatUIUtils.createPath( false, 1,4, 5,0, 9,4 );
 			g.setStroke( new BasicStroke( 1f ) );
 			g.draw( path );
 		} else {

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

@@ -47,7 +47,7 @@ public class FlatDescendingSortIcon
 		g.setColor( sortIconColor );
 		if( chevron ) {
 			// chevron arrow
-			Path2D path = FlatUIUtils.createPath( false, 1,1, 5,5, 9,1 );
+			Path2D path = FlatUIUtils.createPath( false, 1,0, 5,4, 9,0 );
 			g.setStroke( new BasicStroke( 1f ) );
 			g.draw( path );
 		} else {

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

@@ -0,0 +1,60 @@
+/*
+ * 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.icons;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.ui.FlatButtonUI;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+/**
+ * Base class for internal frame icons.
+ *
+ * @uiDefault InternalFrame.buttonHoverBackground		Color
+ * @uiDefault InternalFrame.buttonPressedBackground		Color
+ *
+ * @author Karl Tauber
+ */
+public abstract class FlatInternalFrameAbstractIcon
+	extends FlatAbstractIcon
+{
+	private final Color hoverBackground;
+	private final Color pressedBackground;
+
+	public FlatInternalFrameAbstractIcon() {
+		this( UIManager.getDimension( "InternalFrame.buttonSize" ),
+			UIManager.getColor( "InternalFrame.buttonHoverBackground" ),
+			UIManager.getColor( "InternalFrame.buttonPressedBackground" ) );
+	}
+
+	public FlatInternalFrameAbstractIcon( Dimension size, Color hoverBackground, Color pressedBackground ) {
+		super( size.width, size.height, null );
+		this.hoverBackground = hoverBackground;
+		this.pressedBackground = pressedBackground;
+	}
+
+	protected void paintBackground( Component c, Graphics2D g ) {
+		Color background = FlatButtonUI.buttonStateColor( c, null, null, null, hoverBackground, pressedBackground );
+		if( background != null ) {
+			FlatUIUtils.setColor( g, background, c.getBackground() );
+			g.fillRect( 0, 0, width, height );
+		}
+	}
+}

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

@@ -17,30 +17,42 @@
 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.Line2D;
 import java.awt.geom.Path2D;
 import javax.swing.UIManager;
+import com.formdev.flatlaf.ui.FlatButtonUI;
 
 /**
  * "close" icon for {@link javax.swing.JInternalFrame}.
  *
- * @uiDefault InternalFrame.iconColor			Color
+ * @uiDefault InternalFrame.buttonHoverBackground		Color
+ * @uiDefault InternalFrame.buttonPressedBackground		Color
  *
  * @author Karl Tauber
  */
 public class FlatInternalFrameCloseIcon
-	extends FlatAbstractIcon
+	extends FlatInternalFrameAbstractIcon
 {
+	private final Color hoverForeground = UIManager.getColor( "InternalFrame.closeHoverForeground" );
+	private final Color pressedForeground = UIManager.getColor( "InternalFrame.closePressedForeground" );
+
 	public FlatInternalFrameCloseIcon() {
-		super( 16, 16, UIManager.getColor( "InternalFrame.iconColor" ) );
+		super( UIManager.getDimension( "InternalFrame.buttonSize" ),
+			UIManager.getColor( "InternalFrame.closeHoverBackground" ),
+			UIManager.getColor( "InternalFrame.closePressedBackground" ) );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
-		float mx = 8;
-		float my = 8;
+		paintBackground( c, g );
+
+		g.setColor( FlatButtonUI.buttonStateColor( c, c.getForeground(), null, null, hoverForeground, pressedForeground ) );
+
+		float mx = width / 2;
+		float my = height / 2;
 		float r = 3.25f;
 
 		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );

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

@@ -18,24 +18,23 @@ package com.formdev.flatlaf.icons;
 
 import java.awt.Component;
 import java.awt.Graphics2D;
-import javax.swing.UIManager;
 
 /**
  * "iconify" icon for {@link javax.swing.JInternalFrame}.
  *
- * @uiDefault InternalFrame.iconColor			Color
- *
  * @author Karl Tauber
  */
 public class FlatInternalFrameIconifyIcon
-	extends FlatAbstractIcon
+	extends FlatInternalFrameAbstractIcon
 {
 	public FlatInternalFrameIconifyIcon() {
-		super( 16, 16, UIManager.getColor( "InternalFrame.iconColor" ) );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
-		g.fillRect( 3, 8, 10, 1 );
+		paintBackground( c, g );
+
+		g.setColor( c.getForeground() );
+		g.fillRect( (width / 2) - 4, height / 2, 8, 1 );
 	}
 }

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

@@ -18,25 +18,24 @@ package com.formdev.flatlaf.icons;
 
 import java.awt.Component;
 import java.awt.Graphics2D;
-import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
  * "maximize" icon for {@link javax.swing.JInternalFrame}.
  *
- * @uiDefault InternalFrame.iconColor			Color
- *
  * @author Karl Tauber
  */
 public class FlatInternalFrameMaximizeIcon
-	extends FlatAbstractIcon
+	extends FlatInternalFrameAbstractIcon
 {
 	public FlatInternalFrameMaximizeIcon() {
-		super( 16, 16, UIManager.getColor( "InternalFrame.iconColor" ) );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
-		g.fill( FlatUIUtils.createRectangle( 3, 3, 10, 10, 1 ) );
+		paintBackground( c, g );
+
+		g.setColor( c.getForeground() );
+		g.fill( FlatUIUtils.createRectangle( (width / 2) - 4, (height / 2) - 4, 8, 8, 1 ) );
 	}
 }

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

@@ -21,30 +21,32 @@ import java.awt.Graphics2D;
 import java.awt.geom.Area;
 import java.awt.geom.Path2D;
 import java.awt.geom.Rectangle2D;
-import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
  * "minimize" (actually "restore") icon for {@link javax.swing.JInternalFrame}.
  *
- * @uiDefault InternalFrame.iconColor			Color
- *
  * @author Karl Tauber
  */
 public class FlatInternalFrameMinimizeIcon
-	extends FlatAbstractIcon
+	extends FlatInternalFrameAbstractIcon
 {
 	public FlatInternalFrameMinimizeIcon() {
-		super( 16, 16, UIManager.getColor( "InternalFrame.iconColor" ) );
 	}
 
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
-		Path2D r1 = FlatUIUtils.createRectangle( 5, 3, 8, 8, 1 );
-		Path2D r2 = FlatUIUtils.createRectangle( 3, 5, 8, 8, 1 );
+		paintBackground( c, g );
+
+		g.setColor( c.getForeground() );
+
+		int x = (width / 2) - 4;
+		int y = (height / 2) - 4;
+		Path2D r1 = FlatUIUtils.createRectangle( x + 1, y - 1, 8, 8, 1 );
+		Path2D r2 = FlatUIUtils.createRectangle( x - 1, y + 1, 8, 8, 1 );
 
 		Area area = new Area( r1 );
-		area.subtract( new Area( new Rectangle2D.Float( 3, 5, 8, 8 ) ) );
+		area.subtract( new Area( new Rectangle2D.Float( x - 1, y + 1, 8, 8 ) ) );
 		g.fill( area );
 
 		g.fill( r2 );

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

@@ -23,9 +23,10 @@ import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Insets;
 import java.awt.Paint;
-import javax.swing.JButton;
+import javax.swing.AbstractButton;
 import javax.swing.UIManager;
 import javax.swing.plaf.UIResource;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Border for {@link javax.swing.JButton}.
@@ -43,6 +44,8 @@ import javax.swing.plaf.UIResource;
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
  * @uiDefault Button.default.borderWidth		int
+ * @uiDefault Button.toolbar.margin				Insets
+ * @uiDefault Button.toolbar.spacingInsets		Insets
  * @uiDefault Button.arc						int
  *
  * @author Karl Tauber
@@ -61,12 +64,17 @@ public class FlatButtonBorder
 	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 Insets toolbarMargin = UIManager.getInsets( "Button.toolbar.margin" );
+	protected final Insets toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
 	protected final int arc = UIManager.getInt( "Button.arc" );
 
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
-		if( FlatButtonUI.isContentAreaFilled( c ) && !FlatButtonUI.isHelpButton( c ) && !FlatToggleButtonUI.isTabButton( c ) )
-			super.paintBorder( c, g, x, y, width, height );
+		if( FlatButtonUI.isContentAreaFilled( c ) &&
+			!FlatButtonUI.isToolBarButton( c ) &&
+			!FlatButtonUI.isHelpButton( c ) &&
+			!FlatToggleButtonUI.isTabButton( c ) )
+		  super.paintBorder( c, g, x, y, width, height );
 	}
 
 	@Override
@@ -95,11 +103,22 @@ public class FlatButtonBorder
 
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
-		insets = super.getBorderInsets( c, insets );
+		if( FlatButtonUI.isToolBarButton( c ) ) {
+			// In toolbars, use button margin only if explicitly set.
+			// Otherwise use toolbar margin specified in UI defaults.
+			Insets margin = (c instanceof AbstractButton)
+				? ((AbstractButton)c).getMargin()
+				: null;
 
-		// 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 );
+			FlatUIUtils.setInsets( insets, UIScale.scale( FlatUIUtils.addInsets( toolbarSpacingInsets,
+				(margin != null && !(margin instanceof UIResource)) ? margin : toolbarMargin ) ) );
+		} else {
+			insets = super.getBorderInsets( c, insets );
+
+			// use smaller left and right insets for icon-only buttons (so that they are square)
+			if( FlatButtonUI.isIconOnlyButton( c ) && ((AbstractButton)c).getMargin() instanceof UIResource )
+				insets.left = insets.right = Math.min( insets.top, insets.bottom );
+		}
 
 		return insets;
 	}

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

@@ -26,6 +26,7 @@ import java.awt.FontMetrics;
 import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.geom.RoundRectangle2D;
 import java.beans.PropertyChangeEvent;
@@ -34,6 +35,7 @@ import javax.swing.ButtonModel;
 import javax.swing.Icon;
 import javax.swing.JButton;
 import javax.swing.JComponent;
+import javax.swing.JToggleButton;
 import javax.swing.JToolBar;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
@@ -81,6 +83,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.shadowWidth				int		default is 2
  * @uiDefault Button.shadowColor				Color	optional
  * @uiDefault Button.default.shadowColor		Color	optional
+ * @uiDefault Button.toolbar.spacingInsets		Insets
  * @uiDefault Button.toolbar.hoverBackground	Color
  * @uiDefault Button.toolbar.pressedBackground	Color
  *
@@ -113,6 +116,7 @@ public class FlatButtonUI
 	protected Color shadowColor;
 	protected Color defaultShadowColor;
 
+	protected Insets toolbarSpacingInsets;
 	protected Color toolbarHoverBackground;
 	protected Color toolbarPressedBackground;
 
@@ -165,6 +169,7 @@ public class FlatButtonUI
 			defaultPressedBackground = UIManager.getColor( "Button.default.pressedBackground" );
 			defaultBoldText = UIManager.getBoolean( "Button.default.boldText" );
 
+			toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
 			toolbarHoverBackground = UIManager.getColor( prefix + "toolbar.hoverBackground" );
 			toolbarPressedBackground = UIManager.getColor( prefix + "toolbar.pressedBackground" );
 
@@ -222,11 +227,11 @@ public class FlatButtonUI
 	}
 
 	static boolean isIconOnlyButton( Component c ) {
-		if( !(c instanceof JButton) )
+		if( !(c instanceof JButton) && !(c instanceof JToggleButton) )
 			return false;
 
-		Icon icon = ((JButton)c).getIcon();
-		String text = ((JButton)c).getText();
+		Icon icon = ((AbstractButton)c).getIcon();
+		String text = ((AbstractButton)c).getText();
 		return (icon != null && (text == null || text.isEmpty())) ||
 			(icon == null && text != null && ("...".equals( text ) || text.length() == 1));
 	}
@@ -239,7 +244,7 @@ public class FlatButtonUI
 		return c instanceof JButton && clientPropertyEquals( (JButton) c, BUTTON_TYPE, BUTTON_TYPE_HELP );
 	}
 
-	static boolean isToolBarButton( JComponent c ) {
+	static boolean isToolBarButton( Component c ) {
 		return c.getParent() instanceof JToolBar;
 	}
 
@@ -268,27 +273,42 @@ public class FlatButtonUI
 				FlatUIUtils.setRenderingHints( g2 );
 
 				Border border = c.getBorder();
-				float focusWidth = (border instanceof FlatBorder) ? scale( (float) getFocusWidth( c ) ) : 0;
-				float arc = ((border instanceof FlatButtonBorder && !isSquareButton( c )) || isToolBarButton( c ))
+				boolean isToolBarButton = isToolBarButton( c );
+				float focusWidth = (border instanceof FlatBorder && !isToolBarButton) ? scale( (float) getFocusWidth( c ) ) : 0;
+				float arc = ((border instanceof FlatButtonBorder && !isSquareButton( c )) || isToolBarButton)
 					? scale( (float) this.arc ) : 0;
 				boolean def = isDefaultButton( c );
 
+				int x = 0;
+				int y = 0;
+				int width = c.getWidth();
+				int height = c.getHeight();
+
+				if( isToolBarButton ) {
+					Insets spacing = UIScale.scale( toolbarSpacingInsets );
+					x += spacing.left;
+					y += spacing.top;
+					width -= spacing.left + spacing.right;
+					height -= spacing.top + spacing.bottom;
+				}
+
 				// paint shadow
 				Color shadowColor = def ? defaultShadowColor : this.shadowColor;
-				if( shadowColor != null && shadowWidth > 0 && focusWidth > 0 && !c.hasFocus() && c.isEnabled() ) {
+				if( !isToolBarButton && shadowColor != null && shadowWidth > 0 && focusWidth > 0 && !c.hasFocus() && c.isEnabled() ) {
 					g2.setColor( shadowColor );
 					g2.fill( new RoundRectangle2D.Float( focusWidth, focusWidth + UIScale.scale( (float) shadowWidth ),
-						c.getWidth() - focusWidth * 2, c.getHeight() - focusWidth * 2, arc, arc ) );
+						width - focusWidth * 2, height - focusWidth * 2, arc, arc ) );
 				}
 
 				// paint background
 				Color startBg = def ? defaultBackground : startBackground;
 				Color endBg = def ? defaultEndBackground : endBackground;
 				if( background == startBg && endBg != null && !startBg.equals( endBg ) )
-					g2.setPaint( new GradientPaint( 0, 0, startBg, 0, c.getHeight(), endBg ) );
+					g2.setPaint( new GradientPaint( 0, 0, startBg, 0, height, endBg ) );
 				else
 					FlatUIUtils.setColor( g2, background, def ? defaultBackground : c.getBackground() );
-				FlatUIUtils.paintComponentBackground( g2, 0, 0, c.getWidth(), c.getHeight(), focusWidth, arc );
+
+				FlatUIUtils.paintComponentBackground( g2, x, y, width, height, focusWidth, arc );
 			} finally {
 				g2.dispose();
 			}

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

@@ -0,0 +1,308 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.Graphics2D;
+import java.awt.Image;
+import java.awt.Insets;
+import java.awt.LayoutManager;
+import java.awt.Point;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseEvent;
+import java.awt.image.BufferedImage;
+import java.beans.PropertyVetoException;
+import javax.swing.BorderFactory;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JComponent;
+import javax.swing.event.MouseInputAdapter;
+import javax.swing.event.MouseInputListener;
+import javax.swing.JLabel;
+import javax.swing.JLayeredPane;
+import javax.swing.JRootPane;
+import javax.swing.JToolTip;
+import javax.swing.LookAndFeel;
+import javax.swing.SwingConstants;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicDesktopIconUI;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link javax.swing.JInternalFrame.JDesktopIcon}.
+ *
+ * <!-- BasicDesktopIconUI -->
+ *
+ * @uiDefault DesktopIcon.border					Border
+ *
+ * <!-- FlatDesktopIconUI -->
+ *
+ * @uiDefault DesktopIcon.background				Color
+ * @uiDefault DesktopIcon.foreground				Color
+ * @uiDefault DesktopIcon.iconSize					Dimension
+ * @uiDefault DesktopIcon.closeSize					Dimension
+ * @uiDefault DesktopIcon.closeIcon					Icon
+ *
+ * @author Karl Tauber
+ */
+public class FlatDesktopIconUI
+	extends BasicDesktopIconUI
+{
+	private Dimension iconSize;
+	private Dimension closeSize;
+
+	private JLabel dockIcon;
+	private JButton closeButton;
+	private JToolTip titleTip;
+	private ActionListener closeListener;
+	private MouseInputListener mouseInputListener;
+
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatDesktopIconUI();
+	}
+
+	@Override
+	public void uninstallUI( JComponent c ) {
+		super.uninstallUI( c );
+
+		dockIcon = null;
+		closeButton = null;
+	}
+
+	@Override
+	protected void installComponents() {
+		dockIcon = new JLabel();
+		dockIcon.setHorizontalAlignment( SwingConstants.CENTER );
+
+		closeButton = new JButton();
+		closeButton.setIcon( UIManager.getIcon( "DesktopIcon.closeIcon" ) );
+		closeButton.setFocusable( false );
+		closeButton.setBorder( BorderFactory.createEmptyBorder() );
+		closeButton.setOpaque( true );
+		closeButton.setBackground( FlatUIUtils.nonUIResource( desktopIcon.getBackground() ) );
+		closeButton.setForeground( FlatUIUtils.nonUIResource( desktopIcon.getForeground() ) );
+		closeButton.setVisible( false );
+
+		desktopIcon.setLayout( new FlatDesktopIconLayout() );
+		desktopIcon.add( closeButton );
+		desktopIcon.add( dockIcon );
+	}
+
+	@Override
+	protected void uninstallComponents() {
+		hideTitleTip();
+
+		desktopIcon.remove( dockIcon );
+		desktopIcon.remove( closeButton );
+		desktopIcon.setLayout( null );
+	}
+
+	@Override
+	protected void installDefaults() {
+		super.installDefaults();
+
+		LookAndFeel.installColors( desktopIcon, "DesktopIcon.background", "DesktopIcon.foreground" );
+
+		iconSize = UIManager.getDimension( "DesktopIcon.iconSize" );
+		closeSize = UIManager.getDimension( "DesktopIcon.closeSize" );
+	}
+
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		closeListener = e -> {
+			if( frame.isClosable() )
+				frame.doDefaultCloseAction();
+		};
+		closeButton.addActionListener( closeListener );
+		closeButton.addMouseListener( mouseInputListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		closeButton.removeActionListener( closeListener );
+		closeButton.removeMouseListener( mouseInputListener );
+		closeListener = null;
+		mouseInputListener = null;
+	}
+
+	@Override
+	protected MouseInputListener createMouseInputListener() {
+		mouseInputListener = new MouseInputAdapter() {
+			@Override
+			public void mouseReleased( MouseEvent e ) {
+				if( frame.isIcon() && desktopIcon.contains( e.getX(), e.getY() ) ) {
+					hideTitleTip();
+					closeButton.setVisible( false );
+
+					try {
+						frame.setIcon( false );
+					} catch( PropertyVetoException ex ) {
+						// ignore
+					}
+				}
+			}
+
+			@Override
+			public void mouseEntered( MouseEvent e ) {
+				showTitleTip();
+				if( frame.isClosable() )
+					closeButton.setVisible( true );
+			}
+
+			@Override
+			public void mouseExited( MouseEvent e ) {
+				hideTitleTip();
+				closeButton.setVisible( false );
+			}
+		};
+		return mouseInputListener;
+	}
+
+	private void showTitleTip() {
+		JRootPane rootPane = SwingUtilities.getRootPane( desktopIcon );
+		if( rootPane == null )
+			return;
+
+		if( titleTip == null ) {
+			titleTip = new JToolTip();
+			rootPane.getLayeredPane().add( titleTip, JLayeredPane.POPUP_LAYER );
+		}
+		titleTip.setTipText( frame.getTitle() );
+		titleTip.setSize( titleTip.getPreferredSize() );
+
+		int tx = (desktopIcon.getWidth() - titleTip.getWidth()) / 2;
+		int ty = -(titleTip.getHeight() + UIScale.scale( 4 ));
+		Point pt = SwingUtilities.convertPoint( desktopIcon, tx, ty, titleTip.getParent() );
+		if( pt.x + titleTip.getWidth() > rootPane.getWidth() )
+			pt.x = rootPane.getWidth() - titleTip.getWidth();
+		if( pt.x < 0 )
+			pt.x = 0;
+		titleTip.setLocation( pt );
+		titleTip.repaint();
+	}
+
+	private void hideTitleTip() {
+		if( titleTip == null )
+			return;
+
+		titleTip.setVisible( false );
+		titleTip.getParent().remove( titleTip );
+		titleTip = null;
+	}
+
+	@Override
+	public Dimension getPreferredSize( JComponent c ) {
+		return UIScale.scale( iconSize );
+	}
+
+	@Override
+	public Dimension getMinimumSize( JComponent c ) {
+		return getPreferredSize( c );
+	}
+
+	@Override
+	public Dimension getMaximumSize( JComponent c ) {
+		return getPreferredSize( c );
+	}
+
+	void updateDockIcon() {
+		// use invoke later to make sure that components are updated when switching LaF
+		EventQueue.invokeLater( () -> {
+			if( dockIcon != null )
+				updateDockIconLater();
+		} );
+	}
+
+	private void updateDockIconLater() {
+		// make sure that frame is not selected
+		if( frame.isSelected() ) {
+			try {
+				frame.setSelected( false );
+			} catch( PropertyVetoException ex ) {
+				// ignore
+			}
+		}
+
+		// paint internal frame to buffered image
+		int frameWidth = Math.max( frame.getWidth(), 1 );
+		int frameHeight = Math.max( frame.getHeight(), 1 );
+		BufferedImage frameImage = new BufferedImage( frameWidth, frameHeight, BufferedImage.TYPE_INT_ARGB );
+		Graphics2D g = frameImage.createGraphics();
+		try {
+			//TODO fix missing internal frame header when switching LaF
+			frame.paint( g );
+		} finally {
+			g.dispose();
+		}
+
+		// compute preview size (keep ratio; also works with non-square preview)
+		Insets insets = desktopIcon.getInsets();
+		int previewWidth = UIScale.scale( iconSize.width ) - insets.left - insets.right;
+		int previewHeight = UIScale.scale( iconSize.height ) - insets.top - insets.bottom;
+		float frameRatio = ((float) frameHeight / (float) frameWidth);
+		if( ((float) previewWidth / (float) frameWidth) > ((float) previewHeight / (float) frameHeight) )
+			previewWidth = Math.round( previewHeight / frameRatio );
+		else
+			previewHeight = Math.round( previewWidth * frameRatio );
+
+		// scale preview
+		Image previewImage = frameImage.getScaledInstance( previewWidth, previewHeight, Image.SCALE_SMOOTH );
+		dockIcon.setIcon( new ImageIcon( previewImage ) );
+	}
+
+	//---- class DockIcon -----------------------------------------------------
+
+	private class FlatDesktopIconLayout
+		implements LayoutManager
+	{
+		@Override public void addLayoutComponent( String name, Component comp ) {}
+		@Override public void removeLayoutComponent( Component comp ) {}
+
+		@Override
+		public Dimension preferredLayoutSize( Container parent ) {
+			return dockIcon.getPreferredSize();
+		}
+
+		@Override
+		public Dimension minimumLayoutSize( Container parent ) {
+			return dockIcon.getMinimumSize();
+		}
+
+		@Override
+		public void layoutContainer( Container parent ) {
+			Insets insets = parent.getInsets();
+
+			// dock icon
+			dockIcon.setBounds( insets.left, insets.top,
+				parent.getWidth() - insets.left - insets.right,
+				parent.getHeight() - insets.top - insets.bottom );
+
+			// close button in upper right corner
+			Dimension cSize = UIScale.scale( closeSize );
+			closeButton.setBounds( parent.getWidth() - cSize.width, 0, cSize.width, cSize.height );
+		}
+	}
+}

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

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import javax.swing.DefaultDesktopManager;
+import javax.swing.JComponent;
+import javax.swing.JInternalFrame;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
+import javax.swing.plaf.basic.BasicDesktopPaneUI;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link javax.swing.JDesktopPane}.
+ *
+ * <!-- BasicDesktopPaneUI -->
+ *
+ * @uiDefault Desktop.background					Color
+ * @uiDefault Desktop.minOnScreenInsets				Insets
+ *
+ * @author Karl Tauber
+ */
+public class FlatDesktopPaneUI
+	extends BasicDesktopPaneUI
+{
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatDesktopPaneUI();
+	}
+
+	@Override
+	protected void installDesktopManager() {
+		desktopManager = desktop.getDesktopManager();
+		if( desktopManager == null ) {
+			desktopManager = new FlatDesktopManager();
+			desktop.setDesktopManager( desktopManager );
+		}
+	}
+
+	//---- class FlatDesktopManager -------------------------------------------
+
+	private class FlatDesktopManager
+		extends DefaultDesktopManager
+		implements UIResource
+	{
+		@Override
+		public void iconifyFrame( JInternalFrame f ) {
+			super.iconifyFrame( f );
+
+			((FlatDesktopIconUI)f.getDesktopIcon().getUI()).updateDockIcon();
+		}
+	}
+}

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

@@ -50,9 +50,10 @@ public class FlatEmptyBorder
 
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
-		insets.left = scale( left );
+		boolean leftToRight = left == right || c.getComponentOrientation().isLeftToRight();
+		insets.left = scale( leftToRight ? left : right );
 		insets.top = scale( top );
-		insets.right = scale( right );
+		insets.right = scale( leftToRight ? right : left );
 		insets.bottom = scale( bottom );
 		return insets;
 	}

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

@@ -0,0 +1,190 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.LayoutManager;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import javax.swing.BorderFactory;
+import javax.swing.BoxLayout;
+import javax.swing.Icon;
+import javax.swing.JInternalFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.LookAndFeel;
+import javax.swing.UIManager;
+import javax.swing.border.Border;
+import javax.swing.plaf.basic.BasicInternalFrameTitlePane;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Provides the Flat LaF internal frame title bar.
+ *
+ * @author Karl Tauber
+ */
+public class FlatInternalFrameTitlePane
+	extends BasicInternalFrameTitlePane
+{
+	private JLabel titleLabel;
+	private JPanel buttonPanel;
+
+	public FlatInternalFrameTitlePane( JInternalFrame f ) {
+		super( f );
+	}
+
+	@Override
+	protected void installDefaults() {
+		super.installDefaults();
+
+		LookAndFeel.installBorder( this, "InternalFrameTitlePane.border" );
+	}
+
+	@Override
+	protected PropertyChangeListener createPropertyChangeListener() {
+		return new FlatPropertyChangeHandler();
+	}
+
+	@Override
+	protected LayoutManager createLayout() {
+		return new BorderLayout( UIScale.scale( 4 ), 0 );
+	}
+
+	@Override
+	protected void createButtons() {
+		super.createButtons();
+
+		iconButton.setContentAreaFilled( false );
+		maxButton.setContentAreaFilled( false );
+		closeButton.setContentAreaFilled( false );
+
+		Border emptyBorder = BorderFactory.createEmptyBorder();
+		iconButton.setBorder( emptyBorder );
+		maxButton.setBorder( emptyBorder );
+		closeButton.setBorder( emptyBorder );
+
+		updateButtonsVisibility();
+	}
+
+	@Override
+	protected void addSubComponents() {
+		titleLabel = new JLabel( frame.getTitle() );
+		titleLabel.setFont( FlatUIUtils.nonUIResource( getFont() ) );
+		titleLabel.setMinimumSize( new Dimension( UIScale.scale( 32 ), 1 ) );
+		updateFrameIcon();
+		updateColors();
+
+		buttonPanel = new JPanel();
+		buttonPanel.setLayout( new BoxLayout( buttonPanel, BoxLayout.LINE_AXIS ) );
+		buttonPanel.setOpaque( false );
+
+		buttonPanel.add( iconButton );
+		buttonPanel.add( maxButton );
+		buttonPanel.add( closeButton );
+
+		add( titleLabel, BorderLayout.CENTER );
+		add( buttonPanel, BorderLayout.LINE_END );
+	}
+
+	private void updateFrameIcon() {
+		Icon frameIcon = frame.getFrameIcon();
+		if( frameIcon == UIManager.getIcon( "InternalFrame.icon" ) )
+			frameIcon = null;
+		titleLabel.setIcon( frameIcon );
+	}
+
+	private void updateColors() {
+		Color background = FlatUIUtils.nonUIResource( frame.isSelected() ? selectedTitleColor : notSelectedTitleColor );
+		Color foreground = FlatUIUtils.nonUIResource( frame.isSelected() ? selectedTextColor : notSelectedTextColor );
+
+		titleLabel.setForeground( foreground );
+		iconButton.setBackground( background );
+		iconButton.setForeground( foreground );
+		maxButton.setBackground( background );
+		maxButton.setForeground( foreground );
+		closeButton.setBackground( background );
+		closeButton.setForeground( foreground );
+	}
+
+	private void updateButtonsVisibility() {
+		iconButton.setVisible( frame.isIconifiable() );
+		maxButton.setVisible( frame.isMaximizable() );
+		closeButton.setVisible( frame.isClosable() );
+	}
+
+	/**
+	 * Does nothing because FlatLaf internal frames do not have system menus.
+	 */
+	@Override
+	protected void assembleSystemMenu() {
+	}
+
+	/**
+	 * Does nothing because FlatLaf internal frames do not have system menus.
+	 */
+	@Override
+	protected void showSystemMenu() {
+	}
+
+	@Override
+	public void paintComponent( Graphics g ) {
+		paintTitleBackground( g );
+	}
+
+	//---- class FlatPropertyChangeHandler ------------------------------------
+
+	private class FlatPropertyChangeHandler
+		extends PropertyChangeHandler
+	{
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			switch( e.getPropertyName() ) {
+				case JInternalFrame.TITLE_PROPERTY:
+					titleLabel.setText( frame.getTitle() );
+					break;
+
+				case JInternalFrame.FRAME_ICON_PROPERTY:
+					updateFrameIcon();
+					break;
+
+				case JInternalFrame.IS_SELECTED_PROPERTY:
+					updateColors();
+					break;
+
+				case "iconable":
+				case "maximizable":
+				case "closable":
+					updateButtonsVisibility();
+					enableActions();
+					revalidate();
+					repaint();
+
+					// do not invoke super.propertyChange() because this adds/removes the buttons
+					return;
+
+				case "componentOrientation":
+					applyComponentOrientation( frame.getComponentOrientation() );
+					break;
+			}
+
+			super.propertyChange( e );
+		}
+	}
+}

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

@@ -0,0 +1,155 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Insets;
+import javax.swing.JComponent;
+import javax.swing.JInternalFrame;
+import javax.swing.LookAndFeel;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicInternalFrameUI;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link javax.swing.JInternalFrame}.
+ *
+ * <!-- BasicInternalFrameUI -->
+ *
+ * @uiDefault control											Color
+ * @uiDefault InternalFrame.icon								Icon
+ * @uiDefault InternalFrame.border								Border
+ * @uiDefault InternalFrame.layoutTitlePaneAtOrigin				boolean
+ *
+ * <!-- BasicInternalFrameTitlePane -->
+ *
+ * @uiDefault InternalFrame.titleFont							Font
+ * @uiDefault InternalFrame.icon								Icon
+ * @uiDefault InternalFrame.maximizeIcon						Icon
+ * @uiDefault InternalFrame.minimizeIcon						Icon
+ * @uiDefault InternalFrame.iconifyIcon							Icon
+ * @uiDefault InternalFrame.closeIcon							Icon
+ * @uiDefault InternalFrame.activeTitleBackground				Color
+ * @uiDefault InternalFrame.activeTitleForeground				Color
+ * @uiDefault InternalFrame.inactiveTitleBackground				Color
+ * @uiDefault InternalFrame.inactiveTitleForeground				Color
+ * @uiDefault InternalFrame.closeButtonToolTip					String
+ * @uiDefault InternalFrame.iconButtonToolTip					String
+ * @uiDefault InternalFrame.restoreButtonToolTip				String
+ * @uiDefault InternalFrame.maxButtonToolTip					String
+ * @uiDefault InternalFrameTitlePane.closeButtonText			String
+ * @uiDefault InternalFrameTitlePane.minimizeButtonText			String
+ * @uiDefault InternalFrameTitlePane.restoreButtonText			String
+ * @uiDefault InternalFrameTitlePane.maximizeButtonText			String
+ * @uiDefault InternalFrameTitlePane.moveButtonText				String
+ * @uiDefault InternalFrameTitlePane.sizeButtonText				String
+ * @uiDefault InternalFrameTitlePane.closeButton.mnemonic		Integer
+ * @uiDefault InternalFrameTitlePane.minimizeButton.mnemonic	Integer
+ * @uiDefault InternalFrameTitlePane.restoreButton.mnemonic		Integer
+ * @uiDefault InternalFrameTitlePane.maximizeButton.mnemonic	Integer
+ * @uiDefault InternalFrameTitlePane.moveButton.mnemonic		Integer
+ * @uiDefault InternalFrameTitlePane.sizeButton.mnemonic		Integer
+ *
+ * <!-- FlatInternalFrameUI -->
+ *
+ * @uiDefault InternalFrame.activeBorderColor					Color
+ * @uiDefault InternalFrame.inactiveBorderColor					Color
+ * @uiDefault InternalFrame.borderLineWidth						int
+ * @uiDefault InternalFrame.borderMargins						Insets
+ *
+ * <!-- FlatInternalFrameTitlePane -->
+ *
+ * @uiDefault InternalFrameTitlePane.border						Border
+ *
+ * @author Karl Tauber
+ */
+public class FlatInternalFrameUI
+	extends BasicInternalFrameUI
+{
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatInternalFrameUI( (JInternalFrame) c );
+	}
+
+	public FlatInternalFrameUI( JInternalFrame b ) {
+		super( b );
+	}
+
+	@Override
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		LookAndFeel.installProperty( frame, "opaque", false );
+	}
+
+	@Override
+	protected JComponent createNorthPane( JInternalFrame w ) {
+		return new FlatInternalFrameTitlePane( w );
+	}
+
+	//---- class FlatInternalFrameBorder --------------------------------------
+
+	public static class FlatInternalFrameBorder
+		extends FlatEmptyBorder
+	{
+		private final Color activeBorderColor = UIManager.getColor( "InternalFrame.activeBorderColor" );
+		private final Color inactiveBorderColor = UIManager.getColor( "InternalFrame.inactiveBorderColor" );
+		private final int borderLineWidth = FlatUIUtils.getUIInt( "InternalFrame.borderLineWidth", 1 );
+
+		public FlatInternalFrameBorder() {
+			super( UIManager.getInsets( "InternalFrame.borderMargins" ) );
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c, Insets insets ) {
+			if( c instanceof JInternalFrame && ((JInternalFrame)c).isMaximum() ) {
+				insets.left = scale( Math.min( borderLineWidth, left ) );
+				insets.top = scale( Math.min( borderLineWidth, top ) );
+				insets.right = scale( Math.min( borderLineWidth, right ) );
+				insets.bottom = scale( Math.min( borderLineWidth, bottom ) );
+				return insets;
+			}
+
+			return super.getBorderInsets( c, insets );
+		}
+
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			JInternalFrame f = (JInternalFrame) c;
+
+			Insets insets = getBorderInsets( c );
+			float lineWidth = scale( (float) borderLineWidth );
+
+			Graphics2D g2 = (Graphics2D) g.create();
+			try {
+				FlatUIUtils.setRenderingHints( g2 );
+				g2.setColor( f.isSelected() ? activeBorderColor : inactiveBorderColor );
+				g2.fill( FlatUIUtils.createRectangle(
+					x + insets.left - lineWidth,
+					y + insets.top - lineWidth,
+					width - insets.left - insets.right + (lineWidth * 2),
+					height - insets.top - insets.bottom + (lineWidth * 2),
+					lineWidth ) );
+			} finally {
+				g2.dispose();
+			}
+		}
+	}
+}

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

@@ -29,13 +29,26 @@ import javax.swing.plaf.basic.BasicBorders;
 public class FlatMarginBorder
 	extends BasicBorders.MarginBorder
 {
+	private final int left, right, top, bottom;
+
+	public FlatMarginBorder() {
+		left = right = top = bottom = 0;
+	}
+
+	public FlatMarginBorder( Insets insets ) {
+		left = insets.left;
+		top = insets.top;
+		right = insets.right;
+		bottom = insets.bottom;
+	}
+
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
 		insets = super.getBorderInsets( c, insets );
-		insets.top = scale( insets.top );
-		insets.left = scale( insets.left );
-		insets.bottom = scale( insets.bottom );
-		insets.right = scale( insets.right );
+		insets.top = scale( insets.top + top );
+		insets.left = scale( insets.left + left );
+		insets.bottom = scale( insets.bottom + bottom );
+		insets.right = scale( insets.right + right );
 		return insets;
 	}
 }

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

@@ -29,7 +29,6 @@ import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicPasswordFieldUI;
 import javax.swing.text.Caret;
 import com.formdev.flatlaf.FlatClientProperties;
-import com.formdev.flatlaf.util.SystemInfo;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JPasswordField}.
@@ -78,10 +77,6 @@ public class FlatPasswordFieldUI
 	protected void installDefaults() {
 		super.installDefaults();
 
-		// use other echoChar on Mac because the default is too large in SF font
-		if( SystemInfo.IS_MAC )
-			LookAndFeel.installProperty( getComponent(), "echoChar", '\u2022' );
-
 		String prefix = getPropertyPrefix();
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );

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

@@ -193,4 +193,19 @@ public class FlatProgressBarUI
 				paintString( g, x, y, width, height, amountFull, insets );
 		}
 	}
+
+	@Override
+	protected void setAnimationIndex( int newValue ) {
+		super.setAnimationIndex( newValue );
+
+		// On HiDPI screens at 125%, 150% and 175% scaling, it occurs that antialiased painting
+		// may paint one pixel outside of the clipping area. This results in visual artifacts
+		// in indeterminate mode when the progress moves around.
+		// Unfortunately it is not safe to invoke getBox() from here (may throw NPE),
+		// which makes it impractical to get progress box and repaint increased box.
+		// Only solution is to repaint whole progress bar.
+		double systemScaleFactor = UIScale.getSystemScaleFactor( progressBar.getGraphicsConfiguration() );
+		if( (int) systemScaleFactor != systemScaleFactor )
+			progressBar.repaint();
+	}
 }

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

@@ -118,11 +118,13 @@ public class FlatRadioButtonUI
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
-		// fill background even if opaque if
-		// - used as cell renderer (because of selection background)
-		// - if background was explicitly set to a non-UIResource color
+		// fill background even if not opaque if
+		// - contentAreaFilled is true and
+		//   - used as cell renderer (because of selection background)
+		//   - or if background was explicitly set to a non-UIResource color
 		if( !c.isOpaque() &&
-			(c.getParent() instanceof CellRendererPane || !(c.getBackground() instanceof UIResource)) )
+			((AbstractButton)c).isContentAreaFilled() &&
+			(c.getParent() instanceof CellRendererPane || !(c.getBackground() instanceof UIResource)))
 		{
 			g.setColor( c.getBackground() );
 			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );

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

@@ -82,6 +82,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TabbedPane.tabSelectionHeight				int
  * @uiDefault TabbedPane.contentSeparatorHeight			int
  * @uiDefault TabbedPane.showTabSeparators				boolean
+ * @uiDefault TabbedPane.tabSeparatorsFullHeight		boolean
  * @uiDefault TabbedPane.hasFullBorder					boolean
  *
  * @author Karl Tauber
@@ -103,6 +104,7 @@ public class FlatTabbedPaneUI
 	protected int tabSelectionHeight;
 	protected int contentSeparatorHeight;
 	protected boolean showTabSeparators;
+	protected boolean tabSeparatorsFullHeight;
 	protected boolean hasFullBorder;
 	protected boolean tabsOverlapBorder;
 
@@ -128,6 +130,7 @@ public class FlatTabbedPaneUI
 		tabSelectionHeight = UIManager.getInt( "TabbedPane.tabSelectionHeight" );
 		contentSeparatorHeight = UIManager.getInt( "TabbedPane.contentSeparatorHeight" );
 		showTabSeparators = UIManager.getBoolean( "TabbedPane.showTabSeparators" );
+		tabSeparatorsFullHeight = UIManager.getBoolean( "TabbedPane.tabSeparatorsFullHeight" );
 		hasFullBorder = UIManager.getBoolean( "TabbedPane.hasFullBorder" );
 		tabsOverlapBorder = UIManager.getBoolean( "TabbedPane.tabsOverlapBorder" );
 
@@ -307,7 +310,7 @@ public class FlatTabbedPaneUI
 			!isLastInRun( tabIndex ) )
 		{
 			float sepWidth = UIScale.scale( 1f );
-			float offset = UIScale.scale( 5f );
+			float offset = tabSeparatorsFullHeight ? 0 : UIScale.scale( 5f );
 
 			g.setColor( (tabSeparatorColor != null) ? tabSeparatorColor : contentAreaColor );
 			if( tabPlacement == LEFT || tabPlacement == RIGHT ) {

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

@@ -22,13 +22,20 @@ import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.geom.Rectangle2D;
+import java.util.Objects;
+import javax.swing.Icon;
 import javax.swing.JComponent;
+import javax.swing.JLabel;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
+import javax.swing.SwingConstants;
 import javax.swing.UIManager;
+import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTableHeaderUI;
 import javax.swing.table.TableCellRenderer;
 import javax.swing.table.TableColumn;
@@ -49,6 +56,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TableHeader.separatorColor		Color
  * @uiDefault TableHeader.bottomSeparatorColor	Color
  * @uiDefault TableHeader.height				int
+ * @uiDefault TableHeader.sortIconPosition		String	right (default), left, top or bottom
  *
  * @author Karl Tauber
  */
@@ -58,6 +66,7 @@ public class FlatTableHeaderUI
 	protected Color separatorColor;
 	protected Color bottomSeparatorColor;
 	protected int height;
+	protected int sortIconPosition;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTableHeaderUI();
@@ -70,12 +79,33 @@ public class FlatTableHeaderUI
 		separatorColor = UIManager.getColor( "TableHeader.separatorColor" );
 		bottomSeparatorColor = UIManager.getColor( "TableHeader.bottomSeparatorColor" );
 		height = UIManager.getInt( "TableHeader.height" );
+		switch( Objects.toString( UIManager.getString( "TableHeader.sortIconPosition" ), "right" ) ) {
+			default:
+			case "right":	sortIconPosition = SwingConstants.RIGHT; break;
+			case "left":	sortIconPosition = SwingConstants.LEFT; break;
+			case "top":		sortIconPosition = SwingConstants.TOP; break;
+			case "bottom":	sortIconPosition = SwingConstants.BOTTOM; break;
+		}
+
+		// use own renderer if necessary
+		if( sortIconPosition != SwingConstants.RIGHT ) {
+			TableCellRenderer defaultRenderer = header.getDefaultRenderer();
+			if( defaultRenderer instanceof UIResource )
+				header.setDefaultRenderer( new FlatTableCellHeaderRenderer( defaultRenderer ) );
+		}
 	}
 
 	@Override
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		// restore default renderer
+		TableCellRenderer defaultRenderer = header.getDefaultRenderer();
+		if( defaultRenderer instanceof FlatTableCellHeaderRenderer ) {
+			((FlatTableCellHeaderRenderer)defaultRenderer).reset();
+			header.setDefaultRenderer( ((FlatTableCellHeaderRenderer)defaultRenderer).delegate );
+		}
+
 		separatorColor = null;
 		bottomSeparatorColor = null;
 	}
@@ -215,4 +245,83 @@ public class FlatTableHeaderUI
 		parent = parent.getParent();
 		return (parent instanceof JScrollPane) ? (JScrollPane) parent : null;
 	}
+
+	//---- class FlatTableCellHeaderRenderer ----------------------------------
+
+	/**
+	 * A delegating header renderer that is only used to paint sort arrows at
+	 * top, bottom or left position.
+	 */
+	private class FlatTableCellHeaderRenderer
+		implements TableCellRenderer, Border, UIResource
+	{
+		private final TableCellRenderer delegate;
+
+		private int oldHorizontalTextPosition = -1;
+		private Border origBorder;
+		private Icon sortIcon;
+
+		FlatTableCellHeaderRenderer( TableCellRenderer delegate ) {
+			this.delegate = delegate;
+		}
+
+		@Override
+		public Component getTableCellRendererComponent( JTable table, Object value, boolean isSelected,
+			boolean hasFocus, int row, int column )
+		{
+			Component c = delegate.getTableCellRendererComponent( table, value, isSelected, hasFocus, row, column );
+			if( !(c instanceof JLabel) )
+				return c;
+
+			JLabel l = (JLabel) c;
+
+			if( sortIconPosition == SwingConstants.LEFT ) {
+				if( oldHorizontalTextPosition < 0 )
+					oldHorizontalTextPosition = l.getHorizontalTextPosition();
+				l.setHorizontalTextPosition( SwingConstants.RIGHT );
+			} else {
+				// top or bottom
+				sortIcon = l.getIcon();
+				origBorder = l.getBorder();
+				l.setIcon( null );
+				l.setBorder( this );
+			}
+
+			return l;
+		}
+
+		void reset() {
+			if( sortIconPosition == SwingConstants.LEFT && oldHorizontalTextPosition >= 0 ) {
+				Component c = getTableCellRendererComponent( header.getTable(), "", false, false, -1, 0 );
+				if( c instanceof JLabel && ((JLabel)c).getHorizontalTextPosition() == SwingConstants.RIGHT )
+					((JLabel)c).setHorizontalTextPosition( oldHorizontalTextPosition );
+			}
+		}
+
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			if( origBorder != null )
+				origBorder.paintBorder( c, g, x, y, width, height );
+
+			if( sortIcon != null ) {
+				int xi = x + ((width - sortIcon.getIconWidth()) / 2);
+				int yi = (sortIconPosition == SwingConstants.TOP)
+					? y + UIScale.scale( 1 )
+					: y + height - sortIcon.getIconHeight()
+						- 1 // for gap
+						- (int) (1 * UIScale.getUserScaleFactor()); // for bottom border
+				sortIcon.paintIcon( c, g, xi, yi );
+			}
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c ) {
+			return (origBorder != null) ? origBorder.getBorderInsets( c ) : new Insets( 0, 0, 0, 0 );
+		}
+
+		@Override
+		public boolean isBorderOpaque() {
+			return (origBorder != null) ? origBorder.isBorderOpaque() : false;
+		}
+	}
 }

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

@@ -29,6 +29,7 @@ import javax.swing.UIManager;
 /**
  * Border for {@link javax.swing.JToolBar}.
  *
+ * @uiDefault ToolBar.borderMargins				Insets
  * @uiDefault ToolBar.gripColor					Color
  *
  * @author Karl Tauber
@@ -42,6 +43,10 @@ public class FlatToolBarBorder
 
 	protected final Color gripColor = UIManager.getColor( "ToolBar.gripColor" );
 
+	public FlatToolBarBorder() {
+		super( UIManager.getInsets( "ToolBar.borderMargins" ) );
+	}
+
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 		// paint grip

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

@@ -16,18 +16,14 @@
 
 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;
 import javax.swing.border.Border;
-import javax.swing.border.EmptyBorder;
 import javax.swing.plaf.ComponentUI;
-import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicToolBarUI;
 
 /**
@@ -45,28 +41,15 @@ import javax.swing.plaf.basic.BasicToolBarUI;
  * @uiDefault ToolBar.floatingForeground				Color
  * @uiDefault ToolBar.isRollover						boolean
  *
- * <!-- FlatToolBarUI -->
- *
- * @uiDefault ToolBar.buttonMargins						Insets
- *
  * @author Karl Tauber
  */
 public class FlatToolBarUI
 	extends BasicToolBarUI
 {
-	private Border rolloverBorder;
-
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatToolBarUI();
 	}
 
-	@Override
-	public void uninstallUI( JComponent c ) {
-		super.uninstallUI( c );
-
-		rolloverBorder = null;
-	}
-
 	@Override
 	protected ContainerListener createToolBarContListener() {
 		return new ToolBarContListener() {
@@ -90,26 +73,15 @@ public class FlatToolBarUI
 		};
 	}
 
-	@Override
-	protected Border createRolloverBorder() {
-		return getRolloverBorder();
-	}
-
-	@Override
-	protected Border createNonRolloverBorder() {
-		return getRolloverBorder();
-	}
-
-	@Override
-	protected Border getNonRolloverBorder( AbstractButton b ) {
-		return getRolloverBorder();
-	}
-
-	private Border getRolloverBorder() {
-		if( rolloverBorder == null )
-			rolloverBorder = new FlatRolloverMarginBorder();
-		return rolloverBorder;
-	}
+	// disable rollover border
+	@Override protected void setBorderToRollover( Component c ) {}
+	@Override protected void setBorderToNonRollover( Component c ) {}
+	@Override protected void setBorderToNormal( Component c ) {}
+	@Override protected void installRolloverBorders( JComponent c ) {}
+	@Override protected void installNonRolloverBorders( JComponent c ) {}
+	@Override protected void installNormalBorders( JComponent c ) {}
+	@Override protected Border createRolloverBorder() { return null; }
+	@Override protected Border createNonRolloverBorder() { return null; }
 
 	@Override
 	public void setOrientation( int orientation ) {
@@ -123,46 +95,4 @@ public class FlatToolBarUI
 
 		super.setOrientation( orientation );
 	}
-
-	//---- class FlatRolloverMarginBorder -------------------------------------
-
-	/**
-	 * Uses button margin only if explicitly set.
-	 * Otherwise uses insets specified in constructor.
-	 */
-	private static class FlatRolloverMarginBorder
-		extends EmptyBorder
-	{
-		public FlatRolloverMarginBorder() {
-			super( UIManager.getInsets( "ToolBar.buttonMargins" ) );
-		}
-
-		@Override
-		public Insets getBorderInsets( Component c, Insets insets ) {
-			Insets margin = (c instanceof AbstractButton)
-				? ((AbstractButton) c).getMargin()
-				: null;
-
-			if( margin == null || margin instanceof UIResource ) {
-				insets.top = top;
-				insets.left = left;
-				insets.bottom = bottom;
-				insets.right = right;
-			} else {
-				// margin explicitly set
-				insets.top = margin.top;
-				insets.left = margin.left;
-				insets.bottom = margin.bottom;
-				insets.right = margin.right;
-			}
-
-			// scale
-			insets.top = scale( insets.top );
-			insets.left = scale( insets.left );
-			insets.bottom = scale( insets.bottom );
-			insets.right = scale( insets.right );
-
-			return insets;
-		}
-	}
 }

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

@@ -20,6 +20,7 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.Font;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
@@ -37,7 +38,7 @@ import java.util.function.Consumer;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
-import javax.swing.plaf.ColorUIResource;
+import javax.swing.plaf.UIResource;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.DerivedColor;
 import com.formdev.flatlaf.util.HiDPIUtils;
@@ -83,6 +84,13 @@ public class FlatUIUtils
 			insets1.right + insets2.right );
 	}
 
+	public static void setInsets( Insets dest, Insets src ) {
+		dest.top = src.top;
+		dest.left = src.left;
+		dest.bottom = src.bottom;
+		dest.right = src.right;
+	}
+
 	public static Color getUIColor( String key, int defaultColorRGB ) {
 		Color color = UIManager.getColor( key );
 		return (color != null) ? color : new Color( defaultColorRGB );
@@ -109,7 +117,11 @@ public class FlatUIUtils
 	}
 
 	public static Color nonUIResource( Color c ) {
-		return (c instanceof ColorUIResource) ? new Color( c.getRGB(), true ) : c;
+		return (c instanceof UIResource) ? new Color( c.getRGB(), true ) : c;
+	}
+
+	public static Font nonUIResource( Font font ) {
+		return (font instanceof UIResource) ? new Font( font.getName(), font.getStyle(), font.getSize() ) : font;
 	}
 
 	public static int minimumWidth( JComponent c, int minimumWidth ) {

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

@@ -131,6 +131,34 @@ Component.focusColor=#3d6185
 Component.linkColor=#589df6
 
 
+#---- Desktop ----
+
+Desktop.background=#3E434C
+
+
+#---- DesktopIcon ----
+
+DesktopIcon.background=lighten($Desktop.background,10%)
+
+
+#---- InternalFrame ----
+
+InternalFrame.activeTitleBackground=darken(@background,10%)
+InternalFrame.activeTitleForeground=@foreground
+InternalFrame.inactiveTitleBackground=darken(@background,5%)
+InternalFrame.inactiveTitleForeground=@disabledText
+
+InternalFrame.activeBorderColor=lighten($Component.borderColor,10%)
+InternalFrame.inactiveBorderColor=$Component.borderColor
+
+InternalFrame.buttonHoverBackground=lighten(10%,autoInverse)
+InternalFrame.buttonPressedBackground=lighten(20%,autoInverse)
+InternalFrame.closeHoverBackground=lazy(Actions.Red)
+InternalFrame.closePressedBackground=darken(Actions.Red,10%,lazy)
+InternalFrame.closeHoverForeground=#fff
+InternalFrame.closePressedForeground=#fff
+
+
 #---- List ----
 
 List.background=@textComponentBackground

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

@@ -21,9 +21,12 @@ CheckBoxUI=com.formdev.flatlaf.ui.FlatCheckBoxUI
 CheckBoxMenuItemUI=com.formdev.flatlaf.ui.FlatCheckBoxMenuItemUI
 ColorChooserUI=com.formdev.flatlaf.ui.FlatColorChooserUI
 ComboBoxUI=com.formdev.flatlaf.ui.FlatComboBoxUI
+DesktopIconUI=com.formdev.flatlaf.ui.FlatDesktopIconUI
+DesktopPaneUI=com.formdev.flatlaf.ui.FlatDesktopPaneUI
 EditorPaneUI=com.formdev.flatlaf.ui.FlatEditorPaneUI
 FileChooserUI=com.formdev.flatlaf.ui.FlatFileChooserUI
 FormattedTextFieldUI=com.formdev.flatlaf.ui.FlatFormattedTextFieldUI
+InternalFrameUI=com.formdev.flatlaf.ui.FlatInternalFrameUI
 LabelUI=com.formdev.flatlaf.ui.FlatLabelUI
 ListUI=com.formdev.flatlaf.ui.FlatListUI
 MenuUI=com.formdev.flatlaf.ui.FlatMenuUI
@@ -100,6 +103,9 @@ Button.defaultButtonFollowsFocus=false
 
 Button.default.borderWidth=1
 
+Button.toolbar.margin=3,3,3,3
+Button.toolbar.spacingInsets=1,2,1,2
+
 
 #---- Caret ----
 
@@ -148,6 +154,14 @@ Component.arrowType=chevron
 Component.hideMnemonics=true
 
 
+#---- DesktopIcon ----
+
+DesktopIcon.border=4,4,4,4
+DesktopIcon.iconSize=64,64
+DesktopIcon.closeSize=20,20
+DesktopIcon.closeIcon=com.formdev.flatlaf.icons.FlatInternalFrameCloseIcon
+
+
 #---- EditorPane ----
 
 EditorPane.border=com.formdev.flatlaf.ui.FlatMarginBorder
@@ -197,6 +211,23 @@ HelpButton.questionMarkColor=$CheckBox.icon.checkmarkColor
 HelpButton.disabledQuestionMarkColor=$CheckBox.icon.disabledCheckmarkColor
 
 
+#---- InternalFrame ----
+
+InternalFrame.border=com.formdev.flatlaf.ui.FlatInternalFrameUI$FlatInternalFrameBorder
+InternalFrame.borderLineWidth=1
+InternalFrame.borderMargins=6,6,6,6
+InternalFrame.buttonSize=24,24
+InternalFrame.closeIcon=com.formdev.flatlaf.icons.FlatInternalFrameCloseIcon
+InternalFrame.iconifyIcon=com.formdev.flatlaf.icons.FlatInternalFrameIconifyIcon
+InternalFrame.maximizeIcon=com.formdev.flatlaf.icons.FlatInternalFrameMaximizeIcon
+InternalFrame.minimizeIcon=com.formdev.flatlaf.icons.FlatInternalFrameMinimizeIcon
+
+
+#---- InternalFrameTitlePane ----
+
+InternalFrameTitlePane.border=0,8,0,0
+
+
 #---- List ----
 
 List.border=1,0,1,0
@@ -269,6 +300,7 @@ PasswordField.border=com.formdev.flatlaf.ui.FlatBorder
 PasswordField.margin=@textComponentMargin
 PasswordField.background=@textComponentBackground
 PasswordField.placeholderForeground=@disabledText
+PasswordField.echoChar=\u2022
 
 
 #---- PopupMenu ----
@@ -473,8 +505,8 @@ ToggleButton.tab.focusBackground=$TabbedPane.focusColor
 #---- ToolBar ----
 
 ToolBar.border=com.formdev.flatlaf.ui.FlatToolBarBorder
+ToolBar.borderMargins=2,2,2,2
 ToolBar.isRollover=true
-ToolBar.buttonMargins=3,3,3,3
 ToolBar.gripColor=@icon
 ToolBar.dockingBackground=@background
 ToolBar.floatingBackground=@background
@@ -483,6 +515,8 @@ ToolBar.separatorSize=null
 ToolBar.separatorWidth=7
 ToolBar.separatorColor=$Separator.foreground
 
+ToolBar.spacingBorder=$Button.toolbar.spacingInsets
+
 
 #---- ToolTip ----
 

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

@@ -133,11 +133,39 @@ Component.focusColor=#97c3f3
 Component.linkColor=#2470B3
 
 
+#---- Desktop ----
+
+Desktop.background=#E6EBF0
+
+
+#---- DesktopIcon ----
+
+DesktopIcon.background=darken($Desktop.background,10%)
+
+
 #---- HelpButton ----
 
 HelpButton.questionMarkColor=#4F9EE3
 
 
+#---- InternalFrame ----
+
+InternalFrame.activeTitleBackground=#fff
+InternalFrame.activeTitleForeground=@foreground
+InternalFrame.inactiveTitleBackground=#fafafa
+InternalFrame.inactiveTitleForeground=@disabledText
+
+InternalFrame.activeBorderColor=darken($Component.borderColor,20%)
+InternalFrame.inactiveBorderColor=$Component.borderColor
+
+InternalFrame.buttonHoverBackground=darken(10%,autoInverse)
+InternalFrame.buttonPressedBackground=darken(20%,autoInverse)
+InternalFrame.closeHoverBackground=lazy(Actions.Red)
+InternalFrame.closePressedBackground=darken(Actions.Red,10%,lazy)
+InternalFrame.closeHoverForeground=#fff
+InternalFrame.closePressedForeground=#fff
+
+
 #---- List ----
 
 List.background=@textComponentBackground

flatlaf-demo/build.gradle.kts

@@ -14,11 +14,17 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
-	id( "com.jfrog.bintray" ) version "1.8.4"
+	id( "com.jfrog.bintray" )
+
+	// Although artifactory plugin is not used in this subproject, the plugin is required
+	// because otherwise gradle fails with following error:
+	//     Caused by: org.codehaus.groovy.runtime.typehandling.GroovyCastException:
+	//     Cannot cast object 'task ':bintrayUpload''
+	//     with class 'com.jfrog.bintray.gradle.tasks.BintrayUploadTask_Decorated'
+	//     to class 'com.jfrog.bintray.gradle.tasks.BintrayUploadTask'
+	id( "com.jfrog.artifactory" )
 }
 
 dependencies {
@@ -28,11 +34,6 @@ dependencies {
 	implementation( "com.jgoodies:jgoodies-forms:1.9.0" )
 }
 
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 tasks {
 	jar {
 		dependsOn( ":flatlaf-core:jar" )
@@ -46,14 +47,18 @@ tasks {
 
 		// include all dependencies in jar
 		from( {
-			configurations.runtimeClasspath.get().filter { it.name.endsWith( "jar" ) }.map { zipTree( it ) }
+			configurations.runtimeClasspath.get()
+				.filter { it.name.endsWith( "jar" ) }
+				.map { zipTree( it ).matching {
+					exclude( "META-INF/LICENSE" )
+				} }
 		} )
 	}
 }
 
 bintray {
-	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
-	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+	user = rootProject.extra["bintray.user"] as String?
+	key = rootProject.extra["bintray.key"] as String?
 
 	setConfigurations( "archives" )
 
@@ -67,6 +72,7 @@ bintray {
 			name = project.version.toString()
 		}
 
-		publish = true
+		publish = rootProject.extra["bintray.publish"] as Boolean
+		dryRun = rootProject.extra["bintray.dryRun"] as Boolean
 	}
 }

flatlaf-extras/build.gradle.kts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
 }
@@ -24,8 +22,3 @@ dependencies {
 	implementation( project( ":flatlaf-core" ) )
 	implementation( "com.formdev:svgSalamander:1.1.2.1" )
 }
-
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}

flatlaf-jide-oss/build.gradle.kts

@@ -14,12 +14,11 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
 	`maven-publish`
-	id( "com.jfrog.bintray" ) version "1.8.4"
+	id( "com.jfrog.bintray" )
+	id( "com.jfrog.artifactory" )
 }
 
 dependencies {
@@ -27,11 +26,6 @@ dependencies {
 	implementation( "com.jidesoft:jide-oss:3.6.18" )
 }
 
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 tasks {
 	assemble {
 		dependsOn(
@@ -101,8 +95,8 @@ publishing {
 }
 
 bintray {
-	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
-	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+	user = rootProject.extra["bintray.user"] as String?
+	key = rootProject.extra["bintray.key"] as String?
 
 	setPublications( "maven" )
 
@@ -116,6 +110,29 @@ bintray {
 			name = project.version.toString()
 		}
 
-		publish = true
+		publish = rootProject.extra["bintray.publish"] as Boolean
+		dryRun = rootProject.extra["bintray.dryRun"] as Boolean
 	}
 }
+
+artifactory {
+	setContextUrl( "https://oss.jfrog.org" )
+
+	publish( closureOf<org.jfrog.gradle.plugin.artifactory.dsl.PublisherConfig> {
+		repository( delegateClosureOf<groovy.lang.GroovyObject> {
+			setProperty( "repoKey", "oss-snapshot-local" )
+			setProperty( "username", rootProject.extra["bintray.user"] as String? )
+			setProperty( "password", rootProject.extra["bintray.key"] as String? )
+		} )
+
+		defaults( delegateClosureOf<groovy.lang.GroovyObject> {
+			invokeMethod( "publications", "maven" )
+			setProperty( "publishArtifacts", true )
+			setProperty( "publishPom", true )
+		} )
+	} )
+
+	resolve( delegateClosureOf<org.jfrog.gradle.plugin.artifactory.dsl.ResolverConfig> {
+		setProperty( "repoKey", "jcenter" )
+	} )
+}

flatlaf-swingx/build.gradle.kts

@@ -14,12 +14,11 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
 	`maven-publish`
-	id( "com.jfrog.bintray" ) version "1.8.4"
+	id( "com.jfrog.bintray" )
+	id( "com.jfrog.artifactory" )
 }
 
 dependencies {
@@ -27,11 +26,6 @@ dependencies {
 	implementation( "org.swinglabs.swingx:swingx-all:1.6.5-1" )
 }
 
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 tasks {
 	assemble {
 		dependsOn(
@@ -101,8 +95,8 @@ publishing {
 }
 
 bintray {
-	user = System.getenv( "BINTRAY_USER" ) ?: System.getProperty( "bintray.user" )
-	key = System.getenv( "BINTRAY_KEY" ) ?: System.getProperty( "bintray.key" )
+	user = rootProject.extra["bintray.user"] as String?
+	key = rootProject.extra["bintray.key"] as String?
 
 	setPublications( "maven" )
 
@@ -116,6 +110,29 @@ bintray {
 			name = project.version.toString()
 		}
 
-		publish = true
+		publish = rootProject.extra["bintray.publish"] as Boolean
+		dryRun = rootProject.extra["bintray.dryRun"] as Boolean
 	}
 }
+
+artifactory {
+	setContextUrl( "https://oss.jfrog.org" )
+
+	publish( closureOf<org.jfrog.gradle.plugin.artifactory.dsl.PublisherConfig> {
+		repository( delegateClosureOf<groovy.lang.GroovyObject> {
+			setProperty( "repoKey", "oss-snapshot-local" )
+			setProperty( "username", rootProject.extra["bintray.user"] as String? )
+			setProperty( "password", rootProject.extra["bintray.key"] as String? )
+		} )
+
+		defaults( delegateClosureOf<groovy.lang.GroovyObject> {
+			invokeMethod( "publications", "maven" )
+			setProperty( "publishArtifacts", true )
+			setProperty( "publishPom", true )
+		} )
+	} )
+
+	resolve( delegateClosureOf<org.jfrog.gradle.plugin.artifactory.dsl.ResolverConfig> {
+		setProperty( "repoKey", "jcenter" )
+	} )
+}

flatlaf-testing/build.gradle.kts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-version = rootProject.version
-
 plugins {
 	`java-library`
 }
@@ -38,8 +36,3 @@ dependencies {
 //	implementation( "com.weblookandfeel:weblaf-ui:1.2.12" )
 //	implementation( "com.jgoodies:jgoodies-looks:2.7.0" )
 }
-
-java {
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
-}

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.java

@@ -54,6 +54,15 @@ public class FlatComponentsTest
 		progressBar4.setIndeterminate( indeterminate );
 	}
 
+	private void contentAreaFilledChanged() {
+		boolean contentAreaFilled = contentAreaFilledCheckBox.isSelected();
+
+		for( Component c : getComponents() ) {
+			if( c instanceof AbstractButton )
+				((AbstractButton)c).setContentAreaFilled( contentAreaFilled );
+		}
+	}
+
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		JLabel labelLabel = new JLabel();
@@ -78,18 +87,23 @@ public class FlatComponentsTest
 		JToggleButton toggleButton10 = new JToggleButton();
 		JToggleButton toggleButton3 = new JToggleButton();
 		JToggleButton toggleButton4 = new JToggleButton();
-		JToggleButton toggleButton5 = new JToggleButton();
-		JToggleButton toggleButton8 = new JToggleButton();
+		JToggleButton toggleButton11 = new JToggleButton();
+		JToggleButton toggleButton12 = new JToggleButton();
+		JToggleButton toggleButton13 = new JToggleButton();
+		JToggleButton toggleButton14 = new JToggleButton();
 		JLabel checkBoxLabel = new JLabel();
 		JCheckBox checkBox1 = new JCheckBox();
 		JCheckBox checkBox2 = new JCheckBox();
 		JCheckBox checkBox3 = new JCheckBox();
 		JCheckBox checkBox4 = new JCheckBox();
+		JToggleButton toggleButton5 = new JToggleButton();
+		JToggleButton toggleButton8 = new JToggleButton();
 		JLabel radioButtonLabel = new JLabel();
 		JRadioButton radioButton1 = new JRadioButton();
 		JRadioButton radioButton2 = new JRadioButton();
 		JRadioButton radioButton3 = new JRadioButton();
 		JRadioButton radioButton4 = new JRadioButton();
+		contentAreaFilledCheckBox = new JCheckBox();
 		JLabel comboBoxLabel = new JLabel();
 		JComboBox<String> comboBox1 = new JComboBox<>();
 		JComboBox<String> comboBox2 = new JComboBox<>();
@@ -193,6 +207,9 @@ public class FlatComponentsTest
 		JButton button7 = new JButton();
 		JButton button8 = new JButton();
 		JToggleButton toggleButton6 = new JToggleButton();
+		JToggleButton toggleButton15 = new JToggleButton();
+		JToggleButton toggleButton16 = new JToggleButton();
+		JToggleButton toggleButton17 = new JToggleButton();
 
 		//======== this ========
 		setLayout(new MigLayout(
@@ -343,18 +360,25 @@ public class FlatComponentsTest
 		toggleButton4.setSelected(true);
 		add(toggleButton4, "cell 4 2");
 
-		//---- toggleButton5 ----
-		toggleButton5.setText("tab");
-		toggleButton5.putClientProperty("JButton.buttonType", "tab");
-		toggleButton5.setSelected(true);
-		add(toggleButton5, "cell 5 2");
+		//---- toggleButton11 ----
+		toggleButton11.setIcon(UIManager.getIcon("Tree.closedIcon"));
+		toggleButton11.setSelected(true);
+		add(toggleButton11, "cell 5 2");
 
-		//---- toggleButton8 ----
-		toggleButton8.setText("tab");
-		toggleButton8.putClientProperty("JButton.buttonType", "tab");
-		toggleButton8.setEnabled(false);
-		toggleButton8.setSelected(true);
-		add(toggleButton8, "cell 5 2");
+		//---- toggleButton12 ----
+		toggleButton12.setText("...");
+		toggleButton12.setSelected(true);
+		add(toggleButton12, "cell 5 2");
+
+		//---- toggleButton13 ----
+		toggleButton13.setText("\u2026");
+		toggleButton13.setSelected(true);
+		add(toggleButton13, "cell 5 2");
+
+		//---- toggleButton14 ----
+		toggleButton14.setText("#");
+		toggleButton14.setSelected(true);
+		add(toggleButton14, "cell 5 2");
 
 		//---- checkBoxLabel ----
 		checkBoxLabel.setText("JCheckBox");
@@ -382,6 +406,19 @@ public class FlatComponentsTest
 		checkBox4.setEnabled(false);
 		add(checkBox4, "cell 4 3");
 
+		//---- toggleButton5 ----
+		toggleButton5.setText("tab");
+		toggleButton5.putClientProperty("JButton.buttonType", "tab");
+		toggleButton5.setSelected(true);
+		add(toggleButton5, "cell 5 3");
+
+		//---- toggleButton8 ----
+		toggleButton8.setText("tab");
+		toggleButton8.putClientProperty("JButton.buttonType", "tab");
+		toggleButton8.setEnabled(false);
+		toggleButton8.setSelected(true);
+		add(toggleButton8, "cell 5 3");
+
 		//---- radioButtonLabel ----
 		radioButtonLabel.setText("JRadioButton:");
 		add(radioButtonLabel, "cell 0 4");
@@ -408,6 +445,12 @@ public class FlatComponentsTest
 		radioButton4.setEnabled(false);
 		add(radioButton4, "cell 4 4");
 
+		//---- contentAreaFilledCheckBox ----
+		contentAreaFilledCheckBox.setText("contentAreaFilled");
+		contentAreaFilledCheckBox.setSelected(true);
+		contentAreaFilledCheckBox.addActionListener(e -> contentAreaFilledChanged());
+		add(contentAreaFilledCheckBox, "cell 5 4");
+
 		//---- comboBoxLabel ----
 		comboBoxLabel.setText("JComboBox:");
 		add(comboBoxLabel, "cell 0 5");
@@ -963,6 +1006,21 @@ public class FlatComponentsTest
 			toggleButton6.setIcon(UIManager.getIcon("Tree.leafIcon"));
 			toggleButton6.setSelected(true);
 			toolBar1.add(toggleButton6);
+
+			//---- toggleButton15 ----
+			toggleButton15.setIcon(UIManager.getIcon("FileView.computerIcon"));
+			toggleButton15.setSelected(true);
+			toolBar1.add(toggleButton15);
+
+			//---- toggleButton16 ----
+			toggleButton16.setIcon(UIManager.getIcon("FileView.floppyDriveIcon"));
+			toggleButton16.setSelected(true);
+			toolBar1.add(toggleButton16);
+
+			//---- toggleButton17 ----
+			toggleButton17.setIcon(UIManager.getIcon("FileView.hardDriveIcon"));
+			toggleButton17.setSelected(true);
+			toolBar1.add(toggleButton17);
 		}
 		add(toolBar1, "cell 1 23 3 1,growx");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
@@ -974,6 +1032,7 @@ public class FlatComponentsTest
 	}
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JCheckBox contentAreaFilledCheckBox;
 	private JProgressBar progressBar3;
 	private JProgressBar progressBar4;
 	private JSlider slider3;

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.jfd

@@ -98,7 +98,7 @@ new FormModel {
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "button13"
-				"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+				"icon": &SwingIcon0 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 1"
 			} )
@@ -170,18 +170,29 @@ new FormModel {
 				"value": "cell 4 2"
 			} )
 			add( new FormComponent( "javax.swing.JToggleButton" ) {
-				name: "toggleButton5"
-				"text": "tab"
-				"$client.JButton.buttonType": "tab"
+				name: "toggleButton11"
+				"icon": #SwingIcon0
 				"selected": true
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 2"
 			} )
 			add( new FormComponent( "javax.swing.JToggleButton" ) {
-				name: "toggleButton8"
-				"text": "tab"
-				"$client.JButton.buttonType": "tab"
-				"enabled": false
+				name: "toggleButton12"
+				"text": "..."
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 2"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton13"
+				"text": "…"
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 2"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton14"
+				"text": "#"
 				"selected": true
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 2"
@@ -222,6 +233,23 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 3"
 			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton5"
+				"text": "tab"
+				"$client.JButton.buttonType": "tab"
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 3"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton8"
+				"text": "tab"
+				"$client.JButton.buttonType": "tab"
+				"enabled": false
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 3"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "radioButtonLabel"
 				"text": "JRadioButton:"
@@ -258,6 +286,17 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 4"
 			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "contentAreaFilledCheckBox"
+				"text": "contentAreaFilled"
+				"selected": true
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "contentAreaFilledChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 4"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "comboBoxLabel"
 				"text": "JComboBox:"
@@ -773,18 +812,18 @@ new FormModel {
 				"orientation": 1
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button9"
-					"icon": &SwingIcon0 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+					"icon": &SwingIcon1 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button10"
-					"icon": &SwingIcon1 new com.jformdesigner.model.SwingIcon( 2, "Tree.openIcon" )
+					"icon": &SwingIcon2 new com.jformdesigner.model.SwingIcon( 2, "Tree.openIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator5"
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button11"
-					"icon": &SwingIcon2 new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
+					"icon": &SwingIcon3 new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JToggleButton" ) {
 					name: "toggleButton7"
@@ -952,18 +991,18 @@ new FormModel {
 				name: "toolBar1"
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button4"
-					"icon": #SwingIcon0
+					"icon": #SwingIcon1
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button6"
-					"icon": #SwingIcon1
+					"icon": #SwingIcon2
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator3"
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button7"
-					"icon": #SwingIcon2
+					"icon": #SwingIcon3
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator4"
@@ -979,6 +1018,21 @@ new FormModel {
 					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
 					"selected": true
 				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton15"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.computerIcon" )
+					"selected": true
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton16"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.floppyDriveIcon" )
+					"selected": true
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton17"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.hardDriveIcon" )
+					"selected": true
+				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 23 3 1,growx"
 			} )

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatInternalFrameTest.java

@@ -7,6 +7,7 @@ package com.formdev.flatlaf.testing;
 import java.awt.*;
 import java.beans.PropertyVetoException;
 import javax.swing.*;
+import com.formdev.flatlaf.icons.FlatFileViewFloppyDriveIcon;
 import com.formdev.flatlaf.util.UIScale;
 import net.miginfocom.swing.*;
 
@@ -49,10 +50,25 @@ public class FlatInternalFrameTest
 			maximizableCheckBox.isSelected(),
 			iconifiableCheckBox.isSelected() );
 
-		JPanel panel = new JPanel();
-		panel.setBackground( new Color( (int) (Math.random() * 0xffffff) ) );
+		if( iconCheckBox.isSelected() )
+			internalFrame.setFrameIcon( new FlatFileViewFloppyDriveIcon() );
+
+		JPanel panel = new JPanel() {
+			private final Color color = new Color( (int) (Math.random() * 0xffffff) | 0x20000000, true );
+
+			@Override
+			protected void paintComponent( Graphics g ) {
+				super.paintComponent( g );
+
+				g.setColor( color );
+				g.fillRect( 20, 20, getWidth() - 40, getHeight() - 40 );
+			}
+		};
 		internalFrame.setContentPane( panel );
 
+		if( !palette.getComponentOrientation().isLeftToRight() )
+			internalFrame.setComponentOrientation( ComponentOrientation.RIGHT_TO_LEFT );
+
 		internalFrame.setBounds( frameX + UIScale.scale( GAP ) * (frameCount % 10),
 			frameY + UIScale.scale( GAP ) * (frameCount % 10), UIScale.scale( 200 ), UIScale.scale( 200 ) );
 		desktopPane.add( internalFrame, JLayeredPane.DEFAULT_LAYER );
@@ -76,6 +92,7 @@ public class FlatInternalFrameTest
 		closableCheckBox = new JCheckBox();
 		iconifiableCheckBox = new JCheckBox();
 		maximizableCheckBox = new JCheckBox();
+		iconCheckBox = new JCheckBox();
 		titleLabel = new JLabel();
 		titleField = new JTextField();
 		createFrameButton = new JButton();
@@ -107,6 +124,7 @@ public class FlatInternalFrameTest
 					// rows
 					"[fill]0" +
 					"[]0" +
+					"[]0" +
 					"[]unrel" +
 					"[]unrel"));
 
@@ -130,18 +148,22 @@ public class FlatInternalFrameTest
 				maximizableCheckBox.setSelected(true);
 				paletteContentPane.add(maximizableCheckBox, "cell 1 1,alignx left,growx 0");
 
+				//---- iconCheckBox ----
+				iconCheckBox.setText("Frame icon");
+				paletteContentPane.add(iconCheckBox, "cell 0 2");
+
 				//---- titleLabel ----
 				titleLabel.setText("Frame title:");
-				paletteContentPane.add(titleLabel, "cell 0 2");
-				paletteContentPane.add(titleField, "cell 1 2");
+				paletteContentPane.add(titleLabel, "cell 0 3");
+				paletteContentPane.add(titleField, "cell 1 3");
 
 				//---- createFrameButton ----
 				createFrameButton.setText("Create Frame");
 				createFrameButton.addActionListener(e -> createInternalFrame());
-				paletteContentPane.add(createFrameButton, "cell 1 3,alignx right,growx 0");
+				paletteContentPane.add(createFrameButton, "cell 1 4,alignx right,growx 0");
 			}
 			desktopPane.add(palette, JLayeredPane.PALETTE_LAYER);
-			palette.setBounds(15, 25, 220, 160);
+			palette.setBounds(15, 25, 220, 185);
 		}
 		add(desktopPane, "cell 0 0,width 600,height 600");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
@@ -157,6 +179,7 @@ public class FlatInternalFrameTest
 	private JCheckBox closableCheckBox;
 	private JCheckBox iconifiableCheckBox;
 	private JCheckBox maximizableCheckBox;
+	private JCheckBox iconCheckBox;
 	private JLabel titleLabel;
 	private JTextField titleField;
 	private JButton createFrameButton;

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatInternalFrameTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.0.0.194" Java: "11.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.0.0.194" Java: "13.0.1" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -14,7 +14,7 @@ new FormModel {
 				add( new FormContainer( "javax.swing.JInternalFrame", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 					"$layoutConstraints": "hidemode 3"
 					"$columnConstraints": "[fill][fill]"
-					"$rowConstraints": "[fill]0[]0[]unrel[]unrel"
+					"$rowConstraints": "[fill]0[]0[]0[]unrel[]unrel"
 				} ) {
 					name: "palette"
 					"visible": true
@@ -50,29 +50,35 @@ new FormModel {
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 						"value": "cell 1 1,alignx left,growx 0"
 					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "iconCheckBox"
+						"text": "Frame icon"
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 0 2"
+					} )
 					add( new FormComponent( "javax.swing.JLabel" ) {
 						name: "titleLabel"
 						"text": "Frame title:"
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 0 2"
+						"value": "cell 0 3"
 					} )
 					add( new FormComponent( "javax.swing.JTextField" ) {
 						name: "titleField"
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 1 2"
+						"value": "cell 1 3"
 					} )
 					add( new FormComponent( "javax.swing.JButton" ) {
 						name: "createFrameButton"
 						"text": "Create Frame"
 						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "createInternalFrame", false ) )
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 1 3,alignx right,growx 0"
+						"value": "cell 1 4,alignx right,growx 0"
 					} )
 				}, new FormLayoutConstraints( null ) {
 					"x": 15
 					"y": 25
 					"width": 220
-					"height": 160
+					"height": 185
 					"layer": 100
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatTestFrame.java

@@ -403,8 +403,8 @@ public class FlatTestFrame
 
 	private void updateComponentsRecur( Container container, BiConsumer<Component, String> action ) {
 		for( Component c : container.getComponents() ) {
-			if( c instanceof JPanel ) {
-				updateComponentsRecur( (JPanel) c, action );
+			if( c instanceof JPanel || c instanceof JDesktopPane ) {
+				updateComponentsRecur( (Container) c, action );
 				continue;
 			}
 

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java

@@ -0,0 +1,341 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.testing.uidefaults;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Insets;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.lang.reflect.Array;
+import java.util.Arrays;
+import java.util.List;
+import javax.swing.Icon;
+import javax.swing.ImageIcon;
+import javax.swing.InputMap;
+import javax.swing.JComponent;
+import javax.swing.JToolBar;
+import javax.swing.KeyStroke;
+import javax.swing.ListCellRenderer;
+import javax.swing.LookAndFeel;
+import javax.swing.UIDefaults;
+import javax.swing.UIDefaults.ActiveValue;
+import javax.swing.UIDefaults.LazyValue;
+import javax.swing.UIManager;
+import javax.swing.border.Border;
+import javax.swing.border.CompoundBorder;
+import javax.swing.border.LineBorder;
+import javax.swing.plaf.UIResource;
+import javax.swing.plaf.basic.BasicLookAndFeel;
+import com.formdev.flatlaf.FlatDarkLaf;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.FlatLightLaf;
+import com.formdev.flatlaf.util.SystemInfo;
+
+/**
+ * Dumps look and feel UI defaults to files.
+ *
+ * @author Karl Tauber
+ */
+public class UIDefaultsDump
+{
+	private final LookAndFeel lookAndFeel;
+	private final UIDefaults defaults;
+
+	private String lastPrefix;
+	private JComponent dummyComponent;
+
+	public static void main( String[] args ) {
+		System.setProperty( "sun.java2d.uiScale", "1x" );
+		System.setProperty( "flatlaf.uiScale", "1x" );
+
+		File dir = new File( "src/main/resources/com/formdev/flatlaf/testing/uidefaults" );
+
+		dump( FlatLightLaf.class.getName(), dir );
+		dump( FlatDarkLaf.class.getName(), dir );
+
+//		dump( MyBasicLookAndFeel.class.getName(), dir );
+//		dump( MetalLookAndFeel.class.getName(), dir );
+//
+//		if( SystemInfo.IS_WINDOWS )
+//			dump( "com.sun.java.swing.plaf.windows.WindowsLookAndFeel", dir );
+//		else if( SystemInfo.IS_MAC )
+//			dump( "com.apple.laf.AquaLookAndFeel", dir );
+	}
+
+	private static void dump( String lookAndFeelClassName, File dir ) {
+		try {
+			UIManager.setLookAndFeel( lookAndFeelClassName );
+		} catch( Exception ex ) {
+			ex.printStackTrace();
+			return;
+		}
+
+		LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
+
+		// dump to string
+		StringWriter stringWriter = new StringWriter( 100000 );
+		new UIDefaultsDump( lookAndFeel ).dump( new PrintWriter( stringWriter ) );
+
+		Class<?> lookAndFeelClass = lookAndFeel instanceof MyBasicLookAndFeel
+			? BasicLookAndFeel.class
+			: lookAndFeel.getClass();
+		String suffix = (SystemInfo.IS_MAC && lookAndFeel instanceof FlatLaf) ? "-mac" : "";
+		File file = new File( dir, lookAndFeelClass.getSimpleName() + "_"
+			+ System.getProperty( "java.version" ) + suffix + ".txt" );
+
+		// write to file
+		try( FileWriter fileWriter = new FileWriter( file ) ) {
+			fileWriter.write( stringWriter.toString().replace( "\r", "" ) );
+		} catch( IOException ex ) {
+			ex.printStackTrace();
+		}
+	}
+
+	private UIDefaultsDump( LookAndFeel lookAndFeel ) {
+		this.lookAndFeel = lookAndFeel;
+		this.defaults = lookAndFeel.getDefaults();
+	}
+
+	private void dump( PrintWriter out ) {
+		Class<?> lookAndFeelClass = lookAndFeel instanceof MyBasicLookAndFeel
+			? BasicLookAndFeel.class
+			: lookAndFeel.getClass();
+		out.printf( "Class  %s%n", lookAndFeelClass.getName() );
+		out.printf( "ID     %s%n", lookAndFeel.getID() );
+		out.printf( "Name   %s%n", lookAndFeel.getName() );
+		out.printf( "Java   %s%n", System.getProperty( "java.version" ) );
+		out.printf( "OS     %s%n", System.getProperty( "os.name" ) );
+
+		defaults.entrySet().stream()
+			.sorted( (key1, key2) -> {
+				return String.valueOf( key1 ).compareTo( String.valueOf( key2 ) );
+			} )
+			.forEach( entry -> {
+				Object key = entry.getKey();
+				Object value = entry.getValue();
+
+				String strKey = String.valueOf( key );
+				int dotIndex = strKey.indexOf( '.' );
+				String prefix = (dotIndex > 0)
+					? strKey.substring( 0, dotIndex )
+					: strKey.endsWith( "UI" )
+						? strKey.substring( 0, strKey.length() - 2 )
+						: "";
+				if( !prefix.equals( lastPrefix ) ) {
+					lastPrefix = prefix;
+					out.printf( "%n%n#---- %s ----%n%n", prefix );
+				}
+
+				out.printf( "%-30s ", strKey );
+				dumpValue( out, value );
+				out.println();
+			} );
+	}
+
+	private void dumpValue( PrintWriter out, Object value ) {
+		if( value == null ||
+			value instanceof String ||
+			value instanceof Number ||
+			value instanceof Boolean )
+		{
+			out.print( value );
+		} else if( value instanceof Character ) {
+			char ch = ((Character)value).charValue();
+			if( ch >= ' ' && ch <= '~' )
+				out.printf( "'%c'", value );
+			else
+				out.printf( "'\\u%h'", (int) ch );
+		} else if( value.getClass().isArray() )
+			dumpArray( out, value );
+		else if( value instanceof List )
+			dumpList( out, (List<?>) value );
+		else if( value instanceof Color )
+			dumpColor( out, (Color) value );
+		else if( value instanceof Font )
+			dumpFont( out, (Font) value );
+		else if( value instanceof Insets )
+			dumpInsets( out, (Insets) value );
+		else if( value instanceof Dimension )
+			dumpDimension( out, (Dimension) value );
+		else if( value instanceof Border )
+			dumpBorder( out, (Border) value, null );
+		else if( value instanceof Icon )
+			dumpIcon( out, (Icon) value );
+		else if( value instanceof ListCellRenderer )
+			dumpListCellRenderer( out, (ListCellRenderer<?>) value );
+		else if( value instanceof InputMap )
+			dumpInputMap( out, (InputMap) value, null );
+		else if( value instanceof LazyValue )
+			dumpLazyValue( out, (LazyValue) value );
+		else if( value instanceof ActiveValue )
+			dumpActiveValue( out, (ActiveValue) value );
+		else
+			out.printf( "[unknown type] %s", dumpClass( value ) );
+	}
+
+	private void dumpArray( PrintWriter out, Object array ) {
+		int length = Array.getLength( array );
+		out.printf( "length=%d    %s", length, dumpClass( array ) );
+		for( int i = 0; i < length; i++ ) {
+			out.printf( "%n    [%d] ", i );
+			dumpValue( out, Array.get( array, i ) );
+		}
+	}
+
+	private void dumpList( PrintWriter out, List<?> list ) {
+		out.printf( "size=%d    %s", list.size(), dumpClass( list ) );
+		for( int i = 0; i < list.size(); i++ ) {
+			out.printf( "%n    [%d] ", i );
+			dumpValue( out, list.get( i ) );
+		}
+	}
+
+	private void dumpColor( PrintWriter out, Color color ) {
+		boolean hasAlpha = (color.getAlpha() != 255);
+		out.printf( hasAlpha ? "#%08x    %s" : "#%06x    %s",
+			hasAlpha ? color.getRGB() : (color.getRGB() & 0xffffff),
+			dumpClass( color ) );
+	}
+
+	private void dumpFont( PrintWriter out, Font font ) {
+		String strStyle = font.isBold()
+			? font.isItalic() ? "bolditalic" : "bold"
+			: font.isItalic() ? "italic" : "plain";
+		out.printf( "%s %s %d    %s",
+			font.getName(), strStyle, font.getSize(),
+			dumpClass( font ) );
+	}
+
+	private void dumpInsets( PrintWriter out, Insets insets ) {
+		out.printf( "%d,%d,%d,%d    %s",
+			insets.top, insets.left, insets.bottom, insets.right,
+			dumpClass( insets ) );
+	}
+
+	private void dumpDimension( PrintWriter out, Dimension dimension ) {
+		out.printf( "%d,%d    %s",
+			dimension.width, dimension.height,
+			dumpClass( dimension ) );
+	}
+
+	private void dumpBorder( PrintWriter out, Border border, String indent ) {
+		if( indent == null )
+			indent = "";
+		out.print( indent );
+
+		if( border == null ) {
+			out.print( "null" );
+			return;
+		}
+
+		if( border instanceof CompoundBorder ) {
+			CompoundBorder b = (CompoundBorder) border;
+			out.println( dumpClass( b ) );
+			dumpBorder( out, b.getOutsideBorder(), indent + "    " );
+			out.println();
+			dumpBorder( out, b.getInsideBorder(), indent + "    " );
+		} else {
+			if( border instanceof LineBorder ) {
+				LineBorder b = (LineBorder) border;
+				out.print( "line: " );
+				dumpValue( out, b.getLineColor() );
+				out.printf( " %d %b    ", b.getThickness(), b.getRoundedCorners() );
+			}
+
+			if( dummyComponent == null )
+				dummyComponent = new JComponent() {};
+
+			JComponent c = dummyComponent;
+			if( border.getClass().getName().equals( "com.apple.laf.AquaToolBarUI$ToolBarBorder" ) )
+				c = new JToolBar();
+
+			Insets insets = border.getBorderInsets( c );
+			out.printf( "%d,%d,%d,%d  %b    %s",
+				insets.top, insets.left, insets.bottom, insets.right,
+				border.isBorderOpaque(),
+				dumpClass( border ) );
+		}
+	}
+
+	private void dumpIcon( PrintWriter out, Icon icon ) {
+		out.printf( "%d,%d    %s",
+			icon.getIconWidth(), icon.getIconHeight(),
+			dumpClass( icon ) );
+		if( icon instanceof ImageIcon )
+			out.printf( "  (%s)", dumpClass( ((ImageIcon)icon).getImage() ) );
+	}
+
+	private void dumpListCellRenderer( PrintWriter out, ListCellRenderer<?> listCellRenderer ) {
+		out.print( dumpClass( listCellRenderer ) );
+	}
+
+	private void dumpInputMap( PrintWriter out, InputMap inputMap, String indent ) {
+		if( indent == null )
+			indent = "    ";
+
+		out.printf( "%d    %s", inputMap.size(), dumpClass( inputMap ) );
+
+		KeyStroke[] keys = inputMap.keys();
+		if( keys != null ) {
+			Arrays.sort( keys, (keyStroke1, keyStroke2) -> {
+				return String.valueOf( keyStroke1 ).compareTo( String.valueOf( keyStroke2 ) );
+			} );
+			for( KeyStroke keyStroke : keys ) {
+				Object value = inputMap.get( keyStroke );
+				out.printf( "%n%s%-30s  %s", indent, keyStroke, value );
+			}
+		}
+
+		InputMap parent = inputMap.getParent();
+		if( parent != null )
+			dumpInputMap( out, parent, indent + "    " );
+	}
+
+	private void dumpLazyValue( PrintWriter out, LazyValue value ) {
+		out.print( "[lazy] " );
+		dumpValue( out, value.createValue( defaults ) );
+	}
+
+	private void dumpActiveValue( PrintWriter out, ActiveValue value ) {
+		out.print( "[active] " );
+		dumpValue( out, value.createValue( defaults ) );
+	}
+
+	private String dumpClass( Object value ) {
+		String classname = value.getClass().getName();
+		if( value instanceof UIResource )
+			classname += " [UI]";
+		return classname;
+	}
+
+	//---- class MyBasicLookAndFeel -------------------------------------------
+
+	public static class MyBasicLookAndFeel
+		extends BasicLookAndFeel
+	{
+		@Override public String getName() { return "Basic"; }
+		@Override public String getID() { return "Basic"; }
+		@Override public String getDescription() { return "Basic"; }
+		@Override public boolean isNativeLookAndFeel() { return false; }
+		@Override public boolean isSupportedLookAndFeel() { return true; }
+	}
+}

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/FlatTestLaf.properties

@@ -130,11 +130,39 @@ Component.focusColor=#97c3f3
 #Component.arc=8
 
 
+#---- Desktop ----
+
+Desktop.background=#afe
+
+
+#---- DesktopIcon ----
+
+DesktopIcon.background=darken($Desktop.background,20%)
+
+
 #---- HelpButton ----
 
 HelpButton.questionMarkColor=#0000ff
 
 
+#---- InternalFrame ----
+
+InternalFrame.activeTitleBackground=#800
+InternalFrame.activeTitleForeground=#faa
+InternalFrame.inactiveTitleBackground=#080
+InternalFrame.inactiveTitleForeground=#afa
+
+InternalFrame.activeBorderColor=#f00
+InternalFrame.inactiveBorderColor=#0f0
+
+InternalFrame.buttonHoverBackground=#060
+InternalFrame.buttonPressedBackground=#0a0
+InternalFrame.closeHoverBackground=#008
+InternalFrame.closePressedBackground=#00f
+InternalFrame.closeHoverForeground=#fff
+InternalFrame.closePressedForeground=#fff
+
+
 #---- Label ----
 
 Label.foreground=#008800

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

settings.gradle.kts

@@ -22,3 +22,10 @@ include( "flatlaf-swingx" )
 include( "flatlaf-jide-oss" )
 include( "flatlaf-demo" )
 include( "flatlaf-testing" )
+
+pluginManagement {
+	plugins {
+		id( "com.jfrog.bintray" ) version "1.8.4"
+		id( "com.jfrog.artifactory" ) version "4.13.0"
+	}
+}