release 0.22

- use smaller font
  - reduced height
  - changed style to rounded rectangle
  - fixed painting issues on low values

Support configure of arc with `ProgressBar.arc`

CHANGELOG.md

@@ -1,6 +1,46 @@
 FlatLaf Change Log
 ==================
 
+## 0.22
+
+- TextComponent: Support placeholder text that is displayed if text field is
+  empty (set client property "JTextField.placeholderText" to a string).
+- TextComponent: Scale caret width on HiDPI screens when running on Java 8.
+- ProgressBar: If progress text is visible:
+  - use smaller font
+  - reduced height
+  - changed style to rounded rectangle
+  - fixed painting issues on low values
+- ProgressBar: Support configure of arc with `ProgressBar.arc`.
+- ProgressBar: Reduced thickness from 6 to 4.
+- TabbedPane: Support background color for selected tabs
+  (`TabbedPane.selectedBackground`) and separators between tabs
+  (`TabbedPane.showTabSeparators`).
+- CheckBox: changed `CheckBox.arc` from radius to diameter to be consistent with
+  `Button.arc` and `Component.arc`
+- Button: Enabled `Button.defaultButtonFollowsFocus` on Windows, which allows
+  pressing focused button with <kbd>Enter</kbd> key (as in Windows LaF).
+- Fixed clipped borders at 125%, 150% and 175% scaling when outer focus width is
+  zero (default in "Flat Light" and "Flat Dark" themes).
+- On Mac show mnemonics only when <kbd>Ctrl</kbd> and <kbd>Alt</kbd> keys are
+  pressed. (issue #4)
+
+
+## 0.21
+
+- ScrollBar: Show decrease/increase arrow buttons if client property
+  "JScrollBar.showButtons" is set to `true` on `JScrollPane` or `JScrollBar`.
+  (issue #25)
+- `FlatLaf.isNativeLookAndFeel()` now returns `false`.
+- Button: Optionally support gradient borders, gradient backgrounds and shadows
+  for improved compatibility with IntelliJ platform themes (e.g. for Vuesion,
+  Spacegray and Material Design Dark themes).
+- Button: Fixed help button styling in IntelliJ platform themes.
+- ScrollPane: Paint disabled border if view component (e.g. JTextPane) is
+  disabled.
+- Fixed Swing system colors in dark themes.
+
+
 ## 0.20
 
 - Support using IntelliJ platform themes (.theme.json files).

README.md

@@ -45,7 +45,7 @@ build script:
 
     groupId:     com.formdev
     artifactId:  flatlaf
-    version:     0.20
+    version:     0.22
 
 Otherwise download `flatlaf-<version>.jar` here:
 

build.gradle.kts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-version = "0.20"
+version = "0.22"
 
 allprojects {
 	repositories {

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

@@ -24,18 +24,83 @@ import javax.swing.JComponent;
  */
 public interface FlatClientProperties
 {
+	/**
+	 * Specifies type of a button.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JButton}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong> {@link BUTTON_TYPE_HELP}
+	 */
 	String BUTTON_TYPE = "JButton.buttonType";
+
+	/**
+	 * Paint a help button (circle with question mark).
+	 *
+	 * @see #BUTTON_TYPE
+	 */
 	String BUTTON_TYPE_HELP = "help";
 
+	/**
+	 * Specifies selected state of a checkbox.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JCheckBox}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong> {@link SELECTED_STATE_INDETERMINATE}
+	 */
 	String SELECTED_STATE = "JButton.selectedState";
+
+	/**
+	 * Paint an indeterminate state on a checkbox.
+	 *
+	 * @see #SELECTED_STATE
+	 */
 	String SELECTED_STATE_INDETERMINATE = "indeterminate";
 
+	/**
+	 * Specifies whether the decrease/increase arrow buttons of a scrollbar are shown.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JScrollBar} or {@link javax.swing.JScrollPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String SCROLL_BAR_SHOW_BUTTONS = "JScrollBar.showButtons";
+
+	/**
+	 * Specifies whether separators are shown between tabs.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
+	String TABBED_PANE_SHOW_TAB_SEPARATORS = "JTabbedPane.showTabSeparators";
+
+	/**
+	 * Specifies whether a full border is painted around a tabbed pane.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTabbedPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 */
 	String TABBED_PANE_HAS_FULL_BORDER = "JTabbedPane.hasFullBorder";
 
+	/**
+	 * Placeholder text that is only painted if the text field is empty.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTextField} or {@link javax.swing.JComboBox}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}
+	 */
+	String PLACEHOLDER_TEXT = "JTextField.placeholderText";
+
 	/**
 	 * Checks whether a client property of a component has the given value.
 	 */
 	static boolean clientPropertyEquals( JComponent c, String key, Object value ) {
 		return Objects.equals( c.getClientProperty( key ), value );
 	}
+
+	/**
+	 * Checks whether a client property of a component is a boolean and returns its value.
+	 * If the client property is not set, or not a boolean, defaultValue is returned.
+	 */
+	static boolean clientPropertyBoolean( JComponent c, String key, boolean defaultValue ) {
+		Object value = c.getClientProperty( key );
+		return (value instanceof Boolean) ? (boolean) value : defaultValue;
+	}
 }

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.util.List;
+import java.util.function.Consumer;
 import javax.swing.AbstractButton;
 import javax.swing.JLabel;
 import javax.swing.JTabbedPane;
@@ -60,7 +61,9 @@ public abstract class FlatLaf
 	private PropertyChangeListener desktopPropertyListener;
 
 	private KeyEventPostProcessor mnemonicListener;
-	private static boolean altKeyPressed;
+	private static boolean showMnemonics;
+
+	private Consumer<UIDefaults> postInitialization;
 
 	public static boolean install( LookAndFeel newLookAndFeel ) {
 		try {
@@ -89,7 +92,7 @@ public abstract class FlatLaf
 
 	@Override
 	public boolean isNativeLookAndFeel() {
-		return true;
+		return false;
 	}
 
 	@Override
@@ -110,8 +113,7 @@ public abstract class FlatLaf
 
 		// add mnemonic listener
 		mnemonicListener = e -> {
-			if( e.getKeyCode() == KeyEvent.VK_ALT )
-				altKeyChanged( e.getID() == KeyEvent.KEY_PRESSED );
+			checkShowMnemonics( e );
 			return false;
 		};
 		KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventPostProcessor( mnemonicListener );
@@ -133,6 +135,18 @@ public abstract class FlatLaf
 			};
 			Toolkit.getDefaultToolkit().addPropertyChangeListener( desktopPropertyName, desktopPropertyListener );
 		}
+
+		// Following code should be ideally in initialize(), but needs color from UI defaults.
+		// Do not move this code to getDefaults() to avoid side effects in the case that
+		// getDefaults() is directly invoked from 3rd party code. E.g. `new FlatLightLaf().getDefaults()`.
+		postInitialization = defaults -> {
+			// update link color in HTML text
+			Color linkColor = defaults.getColor( "Component.linkColor" );
+			if( linkColor != null ) {
+				new HTMLEditorKit().getStyleSheet().addRule(
+					String.format( "a { color: #%06x; }", linkColor.getRGB() & 0xffffff ) );
+			}
+		};
 	}
 
 	@Override
@@ -152,6 +166,7 @@ public abstract class FlatLaf
 
 		// restore default link color
 		new HTMLEditorKit().getStyleSheet().addRule( "a { color: blue; }" );
+		postInitialization = null;
 
 		if( base != null )
 			base.uninitialize();
@@ -221,11 +236,9 @@ public abstract class FlatLaf
 		if( useScreenMenuBar )
 			defaults.put( "MenuBarUI", aquaMenuBarUI );
 
-		// update link color in HTML text
-		Color linkColor = defaults.getColor( "Component.linkColor" );
-		if( linkColor != null ) {
-			new HTMLEditorKit().getStyleSheet().addRule(
-				String.format( "a { color: #%06x; }", linkColor.getRGB() & 0xffffff ) );
+		if( postInitialization != null ) {
+			postInitialization.accept( defaults );
+			postInitialization = null;
 		}
 
 		return defaults;
@@ -269,6 +282,9 @@ public abstract class FlatLaf
 				defaults.put( key, uiFont );
 		}
 		defaults.put( "MenuItem.acceleratorFont", uiFont );
+
+		// use smaller font for progress bar
+		defaults.put( "ProgressBar.font", UIScale.scaleFont( uiFont, 0.85f ) );
 	}
 
 	/**
@@ -340,14 +356,27 @@ public abstract class FlatLaf
 	}
 
 	public static boolean isShowMnemonics() {
-		return altKeyPressed || !UIManager.getBoolean( "Component.hideMnemonics" );
+		return showMnemonics || !UIManager.getBoolean( "Component.hideMnemonics" );
 	}
 
-	private static void altKeyChanged( boolean pressed ) {
-		if( pressed == altKeyPressed )
+	private static void checkShowMnemonics( KeyEvent e ) {
+		int keyCode = e.getKeyCode();
+		if( SystemInfo.IS_MAC ) {
+			// Ctrl+Alt keys must be pressed on Mac
+			if( keyCode == KeyEvent.VK_CONTROL || keyCode == KeyEvent.VK_ALT )
+				showMnemonics( e.getID() == KeyEvent.KEY_PRESSED && e.isControlDown() && e.isAltDown() );
+		} else {
+			// Alt key must be pressed on Windows and Linux
+			if( keyCode == KeyEvent.VK_ALT )
+				showMnemonics( e.getID() == KeyEvent.KEY_PRESSED );
+		}
+	}
+
+	private static void showMnemonics( boolean show ) {
+		if( show == showMnemonics )
 			return;
 
-		altKeyPressed = pressed;
+		showMnemonics = show;
 
 		// check whether it is necessary to repaint
 		if( !UIManager.getBoolean( "Component.hideMnemonics" ) )

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

@@ -128,6 +128,10 @@ public class IntelliJTheme
 
 		defaults.put( "Component.isIntelliJTheme", true );
 
+		// enable button shadows
+		defaults.put( "Button.paintShadow", true );
+		defaults.put( "Button.shadowWidth", dark ? 2 : 1 );
+
 		loadNamedColors( defaults );
 
 		// convert Json "ui" structure to UI defaults
@@ -139,6 +143,20 @@ public class IntelliJTheme
 		applyColorPalette( defaults );
 		applyCheckBoxColors( defaults );
 
+		// IDEA uses a SVG icon for the help button, but paints the background with Button.startBackground and Button.endBackground
+		Object helpButtonBackground = defaults.get( "Button.startBackground" );
+		Object helpButtonBorderColor = defaults.get( "Button.startBorderColor" );
+		if( helpButtonBackground == null )
+			helpButtonBackground = defaults.get( "Button.background" );
+		if( helpButtonBorderColor == null )
+			helpButtonBorderColor = defaults.get( "Button.borderColor" );
+		defaults.put( "HelpButton.background", helpButtonBackground );
+		defaults.put( "HelpButton.borderColor", helpButtonBorderColor );
+		defaults.put( "HelpButton.disabledBackground", defaults.get( "Panel.background" ) );
+		defaults.put( "HelpButton.disabledBorderColor", defaults.get( "Button.disabledBorderColor" ) );
+		defaults.put( "HelpButton.focusedBorderColor", defaults.get( "Button.focusedBorderColor" ) );
+		defaults.put( "HelpButton.focusedBackground", defaults.get( "Button.focusedBackground" ) );
+
 		// IDEA uses TextField.background for editable ComboBox and Spinner
 		defaults.put( "ComboBox.editableBackground", defaults.get( "TextField.background" ) );
 		defaults.put( "Spinner.background", defaults.get( "TextField.background" ) );
@@ -212,7 +230,9 @@ public class IntelliJTheme
 			if( uiValue == null ) {
 				// fix errors (missing '#' for colors)
 				if( !valueStr.startsWith( "#" ) && (key.endsWith( "ground" ) || key.endsWith( "Color" )) )
-					valueStr = "#" + valueStr;
+					valueStr = fixColorIfValid( "#" + valueStr, valueStr );
+				else if( valueStr.startsWith( "##" ) )
+					valueStr = fixColorIfValid( valueStr.substring( 1 ), valueStr );
 				else if( key.endsWith( ".border" ) || key.endsWith( "Border" ) ) {
 					List<String> parts = StringUtils.split( valueStr, ',' );
 					if( parts.size() == 5 && !parts.get( 4 ).startsWith( "#" ) ) {
@@ -259,6 +279,17 @@ public class IntelliJTheme
 		}
 	}
 
+	private String fixColorIfValid( String newColorStr, String colorStr ) {
+		try {
+			// check whether it is valid
+			UIDefaultsLoader.parseColorRGBA( newColorStr );
+
+			return newColorStr;
+		} catch( IllegalArgumentException ex ) {
+			return colorStr;
+		}
+	}
+
 	private void applyColorPalette( UIDefaults defaults ) {
 		if( icons == null )
 			return;
@@ -380,17 +411,6 @@ public class IntelliJTheme
 	private static Set<String> noWildcardReplace = new HashSet<>();
 
 	static {
-		// Button
-		// IDEA buttons support gradient for background and border, but FlatLaf does not
-		uiKeyMapping.put( "Button.startBackground",          "Button.background" );
-		uiKeyMapping.put( "Button.startBorderColor",         "Button.borderColor" );
-		uiKeyMapping.put( "Button.default.startBackground",  "Button.default.background" );
-		uiKeyMapping.put( "Button.default.startBorderColor", "Button.default.borderColor" );
-		uiKeyMapping.put( "Button.endBackground",            "" ); // ignore
-		uiKeyMapping.put( "Button.endBorderColor",           "" ); // ignore
-		uiKeyMapping.put( "Button.default.endBackground",    "" ); // ignore
-		uiKeyMapping.put( "Button.default.endBorderColor",   "" ); // ignore
-
 		// ComboBox
 		uiKeyMapping.put( "ComboBox.background",                        "" ); // ignore
 		uiKeyMapping.put( "ComboBox.nonEditableBackground",             "ComboBox.background" );

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

@@ -22,6 +22,7 @@ import java.awt.Insets;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
@@ -30,6 +31,7 @@ import java.util.Properties;
 import java.util.ServiceLoader;
 import java.util.function.Function;
 import javax.swing.UIDefaults;
+import javax.swing.UIDefaults.ActiveValue;
 import javax.swing.UIDefaults.LazyValue;
 import javax.swing.plaf.ColorUIResource;
 import javax.swing.plaf.DimensionUIResource;
@@ -38,9 +40,9 @@ import com.formdev.flatlaf.ui.FlatEmptyBorder;
 import com.formdev.flatlaf.ui.FlatLineBorder;
 import com.formdev.flatlaf.util.ColorFunctions;
 import com.formdev.flatlaf.util.DerivedColor;
-import com.formdev.flatlaf.util.ScaledNumber;
 import com.formdev.flatlaf.util.StringUtils;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Load UI defaults from properties files associated to Flat LaF classes and add to UI defaults.
@@ -77,6 +79,8 @@ class UIDefaultsLoader
 
 	static void loadDefaultsFromProperties( List<Class<?>> lafClasses, UIDefaults defaults ) {
 		try {
+			List<ClassLoader> addonClassLoaders = new ArrayList<>();
+
 			// load properties files
 			Properties properties = new Properties();
 			ServiceLoader<FlatDefaultsAddon> addonLoader = ServiceLoader.load( FlatDefaultsAddon.class );
@@ -94,6 +98,10 @@ class UIDefaultsLoader
 						if( in != null )
 							properties.load( in );
 					}
+
+					ClassLoader addonClassLoader = addon.getClass().getClassLoader();
+					if( !addonClassLoaders.contains( addonClassLoader ) )
+						addonClassLoaders.add( addonClassLoader );
 				}
 			}
 
@@ -131,7 +139,7 @@ class UIDefaultsLoader
 
 				String value = resolveValue( properties, (String) e.getValue() );
 				try {
-					globals.put( key.substring( GLOBAL_PREFIX.length() ), parseValue( key, value, resolver ) );
+					globals.put( key.substring( GLOBAL_PREFIX.length() ), parseValue( key, value, resolver, addonClassLoaders ) );
 				} catch( RuntimeException ex ) {
 					logParseError( key, value, ex );
 				}
@@ -156,7 +164,7 @@ class UIDefaultsLoader
 
 				String value = resolveValue( properties, (String) e.getValue() );
 				try {
-					defaults.put( key, parseValue( key, value, resolver ) );
+					defaults.put( key, parseValue( key, value, resolver, addonClassLoaders ) );
 				} catch( RuntimeException ex ) {
 					logParseError( key, value, ex );
 				}
@@ -195,13 +203,13 @@ class UIDefaultsLoader
 		return resolveValue( properties, newValue );
 	}
 
-	private enum ValueType { UNKNOWN, STRING, INTEGER, BORDER, ICON, INSETS, SIZE, COLOR, SCALEDNUMBER }
+	private enum ValueType { UNKNOWN, STRING, INTEGER, BORDER, ICON, INSETS, SIZE, COLOR, SCALEDINTEGER, INSTANCE, CLASS }
 
 	static Object parseValue( String key, String value ) {
-		return parseValue( key, value, v -> v );
+		return parseValue( key, value, v -> v, Collections.emptyList() );
 	}
 
-	private static Object parseValue( String key, String value, Function<String, String> resolver ) {
+	private static Object parseValue( String key, String value, Function<String, String> resolver, List<ClassLoader> addonClassLoaders ) {
 		value = value.trim();
 
 		// null, false, true
@@ -254,12 +262,14 @@ class UIDefaultsLoader
 		switch( valueType ) {
 			case STRING:		return value;
 			case INTEGER:		return parseInteger( value, true );
-			case BORDER:		return parseBorder( value, resolver );
-			case ICON:			return parseInstance( value );
+			case BORDER:		return parseBorder( value, resolver, addonClassLoaders );
+			case ICON:			return parseInstance( value, addonClassLoaders );
 			case INSETS:		return parseInsets( value );
 			case SIZE:			return parseSize( value );
 			case COLOR:			return parseColorOrFunction( value, true );
-			case SCALEDNUMBER:	return parseScaledNumber( value );
+			case SCALEDINTEGER:	return parseScaledInteger( value );
+			case INSTANCE:		return parseInstance( value, addonClassLoaders );
+			case CLASS:			return parseClass( value, addonClassLoaders );
 			case UNKNOWN:
 			default:
 				// colors
@@ -277,7 +287,7 @@ class UIDefaultsLoader
 		}
 	}
 
-	private static Object parseBorder( String value, Function<String, String> resolver ) {
+	private static Object parseBorder( String value, Function<String, String> resolver, List<ClassLoader> addonClassLoaders ) {
 		if( value.indexOf( ',' ) >= 0 ) {
 			// top,left,bottom,right[,lineColor]
 			List<String> parts = StringUtils.split( value, ',' );
@@ -292,13 +302,13 @@ class UIDefaultsLoader
 					: new FlatEmptyBorder( insets );
 			};
 		} else
-			return parseInstance( value );
+			return parseInstance( value, addonClassLoaders );
 	}
 
-	private static Object parseInstance( String value ) {
+	private static Object parseInstance( String value, List<ClassLoader> addonClassLoaders ) {
 		return (LazyValue) t -> {
 			try {
-				return Class.forName( value ).newInstance();
+				return findClass( value, addonClassLoaders ).newInstance();
 			} catch( InstantiationException | IllegalAccessException | ClassNotFoundException ex ) {
 				ex.printStackTrace();
 				return null;
@@ -306,6 +316,35 @@ class UIDefaultsLoader
 		};
 	}
 
+	private static Object parseClass( String value, List<ClassLoader> addonClassLoaders ) {
+		return (LazyValue) t -> {
+			try {
+				return findClass( value, addonClassLoaders );
+			} catch( ClassNotFoundException ex ) {
+				ex.printStackTrace();
+				return null;
+			}
+		};
+	}
+
+	private static Class<?> findClass( String className, List<ClassLoader> addonClassLoaders )
+		throws ClassNotFoundException
+	{
+		try {
+			return Class.forName( className );
+		} catch( ClassNotFoundException ex ) {
+			// search in addons class loaders
+			for( ClassLoader addonClassLoader : addonClassLoaders ) {
+				try {
+					return addonClassLoader.loadClass( className );
+				} catch( ClassNotFoundException ex2 ) {
+					// ignore
+				}
+			}
+			throw ex;
+		}
+	}
+
 	private static Insets parseInsets( String value ) {
 		List<String> numbers = StringUtils.split( value, ',' );
 		try {
@@ -468,11 +507,10 @@ class UIDefaultsLoader
 		return null;
 	}
 
-	private static ScaledNumber parseScaledNumber( String value ) {
-		try {
-			return new ScaledNumber( Integer.parseInt( value ) );
-		} catch( NumberFormatException ex ) {
-			throw new NumberFormatException( "invalid integer '" + value + "'" );
-		}
+	private static ActiveValue parseScaledInteger( String value ) {
+		int val = parseInteger( value, true );
+		return (ActiveValue) t -> {
+			return UIScale.scale( val );
+		};
 	}
 }

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

@@ -62,7 +62,7 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatCheckBoxIcon
 	extends FlatAbstractIcon
 {
-	protected final int focusWidth = UIManager.getInt( "Component.focusWidth" );
+	public final int focusWidth = UIManager.getInt( "Component.focusWidth" );
 	protected final Color focusColor = FlatUIUtils.getUIColor( "CheckBox.icon.focusedColor",
 		UIManager.getColor( "Component.focusColor" ) );
 	protected final int arc = FlatUIUtils.getUIInt( "CheckBox.arc", 2 );
@@ -133,17 +133,17 @@ public class FlatCheckBoxIcon
 	protected void paintFocusBorder( Graphics2D g2 ) {
 		// the outline focus border is painted outside of the icon
 		int wh = ICON_SIZE - 1 + (focusWidth * 2);
-		int arcwh = (arc + focusWidth) * 2;
+		int arcwh = arc + (focusWidth * 2);
 		g2.fillRoundRect( -focusWidth + 1, -focusWidth, wh, wh, arcwh, arcwh );
 	}
 
 	protected void paintBorder( Graphics2D g2 ) {
-		int arcwh = arc * 2;
+		int arcwh = arc;
 		g2.fillRoundRect( 1, 0, 14, 14, arcwh, arcwh );
 	}
 
 	protected void paintBackground( Graphics2D g2 ) {
-		int arcwh = (arc * 2) - 1;
+		int arcwh = arc - 1;
 		g2.fillRoundRect( 2, 1, 12, 12, arcwh, arcwh );
 	}
 

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

@@ -38,12 +38,15 @@ public class FlatArrowButton
 	extends BasicArrowButton
 	implements UIResource
 {
+	public static final int DEFAULT_ARROW_WIDTH = 8;
+
 	private final boolean chevron;
 	private final Color foreground;
 	private final Color disabledForeground;
 	private final Color hoverForeground;
 	private final Color hoverBackground;
 
+	private int arrowWidth = DEFAULT_ARROW_WIDTH;
 	private int xOffset = 0;
 	private int yOffset = 0;
 
@@ -80,6 +83,14 @@ public class FlatArrowButton
 		}
 	}
 
+	public int getArrowWidth() {
+		return arrowWidth;
+	}
+
+	public void setArrowWidth( int arrowWidth ) {
+		this.arrowWidth = arrowWidth;
+	}
+
 	protected boolean isHover() {
 		return hover;
 	}
@@ -128,8 +139,8 @@ public class FlatArrowButton
 		int direction = getDirection();
 		boolean vert = (direction == NORTH || direction == SOUTH);
 
-		int w = scale( chevron ? 8 : 9 );
-		int h = scale( chevron ? 4 : 5 );
+		int w = scale( arrowWidth + (chevron ? 0 : 1) );
+		int h = scale( (arrowWidth / 2) + (chevron ? 0 : 1) );
 		int rw = vert ? w : h;
 		int rh = vert ? h : w;
 		int x = Math.round( (width - rw) / 2f + scale( (float) xOffset ) );

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

@@ -23,6 +23,7 @@ import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.KeyboardFocusManager;
+import java.awt.Paint;
 import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JScrollPane;
@@ -78,12 +79,12 @@ public class FlatBorder
 
 			if( isFocused( c ) ) {
 				g2.setColor( getFocusColor( c ) );
-				FlatUIUtils.paintOutlineBorder( g2, x, y, width, height, focusWidth,
+				FlatUIUtils.paintComponentOuterBorder( g2, x, y, width, height, focusWidth,
 					getLineWidth() + scale( (float) innerFocusWidth ), arc );
 			}
 
-			g2.setColor( getBorderColor( c ) );
-			FlatUIUtils.drawRoundRectangle( g2, x, y, width, height, focusWidth, borderWidth, arc );
+			g2.setPaint( getBorderColor( c ) );
+			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, focusWidth, borderWidth, arc );
 		} finally {
 			g2.dispose();
 		}
@@ -93,13 +94,24 @@ public class FlatBorder
 		return focusColor;
 	}
 
-	protected Color getBorderColor( Component c ) {
-		boolean enabled = c.isEnabled() && (!(c instanceof JTextComponent) || ((JTextComponent)c).isEditable());
-		return enabled
+	protected Paint getBorderColor( Component c ) {
+		return isEnabled( c )
 			? (isFocused( c ) ? focusedBorderColor : borderColor)
 			: disabledBorderColor;
 	}
 
+	protected boolean isEnabled( Component c ) {
+		if( c instanceof JScrollPane ) {
+			// check whether view component is disabled
+			JViewport viewport = ((JScrollPane)c).getViewport();
+			Component view = (viewport != null) ? viewport.getView() : null;
+			if( view != null && !isEnabled( view ) )
+				return false;
+		}
+
+		return c.isEnabled() && (!(c instanceof JTextComponent) || ((JTextComponent)c).isEditable());
+	}
+
 	protected boolean isFocused( Component c ) {
 		if( c instanceof JScrollPane ) {
 			JViewport viewport = ((JScrollPane)c).getViewport();

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

@@ -19,8 +19,10 @@ package com.formdev.flatlaf.ui;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Component;
+import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Insets;
+import java.awt.Paint;
 import javax.swing.JButton;
 import javax.swing.UIManager;
 import javax.swing.plaf.UIResource;
@@ -29,10 +31,14 @@ import javax.swing.plaf.UIResource;
  * Border for {@link javax.swing.JButton}.
  *
  * @uiDefault Button.borderColor				Color
+ * @uiDefault Button.startBorderColor			Color	optional; if set, a gradient paint is used and Button.borderColor is ignored
+ * @uiDefault Button.endBorderColor				Color	optional; if set, a gradient paint is used
  * @uiDefault Button.disabledBorderColor		Color
  * @uiDefault Button.focusedBorderColor			Color
  * @uiDefault Button.hoverBorderColor			Color	optional
  * @uiDefault Button.default.borderColor		Color
+ * @uiDefault Button.default.startBorderColor	Color	optional; if set, a gradient paint is used and Button.default.borderColor is ignored
+ * @uiDefault Button.default.endBorderColor		Color	optional; if set, a gradient paint is used
  * @uiDefault Button.default.hoverBorderColor	Color	optional
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
@@ -44,11 +50,13 @@ import javax.swing.plaf.UIResource;
 public class FlatButtonBorder
 	extends FlatBorder
 {
-	protected final Color borderColor = UIManager.getColor( "Button.borderColor" );
+	protected final Color borderColor = FlatUIUtils.getUIColor( "Button.startBorderColor", "Button.borderColor" );
+	protected final Color endBorderColor = UIManager.getColor( "Button.endBorderColor" );
 	protected final Color disabledBorderColor = UIManager.getColor( "Button.disabledBorderColor" );
 	protected final Color focusedBorderColor = UIManager.getColor( "Button.focusedBorderColor" );
 	protected final Color hoverBorderColor = UIManager.getColor( "Button.hoverBorderColor" );
-	protected final Color defaultBorderColor = UIManager.getColor( "Button.default.borderColor" );
+	protected final Color defaultBorderColor = FlatUIUtils.getUIColor( "Button.default.startBorderColor", "Button.default.borderColor" );
+	protected final Color defaultEndBorderColor = UIManager.getColor( "Button.default.endBorderColor" );
 	protected final Color defaultHoverBorderColor = UIManager.getColor( "Button.default.hoverBorderColor" );
 	protected final Color defaultFocusedBorderColor = UIManager.getColor( "Button.default.focusedBorderColor" );
 	protected final Color defaultFocusColor = UIManager.getColor( "Button.default.focusColor" );
@@ -67,14 +75,22 @@ public class FlatButtonBorder
 	}
 
 	@Override
-	protected Color getBorderColor( Component c ) {
+	protected Paint getBorderColor( Component c ) {
 		boolean def = FlatButtonUI.isDefaultButton( c );
-		return FlatButtonUI.buttonStateColor( c,
+		Paint color = FlatButtonUI.buttonStateColor( c,
 			def ? defaultBorderColor : borderColor,
 			disabledBorderColor,
 			def ? defaultFocusedBorderColor : focusedBorderColor,
 			def ? defaultHoverBorderColor : hoverBorderColor,
 			null );
+
+		// change to gradient paint if start/end colors are specified
+		Color startBg = def ? defaultBorderColor : borderColor;
+		Color endBg = def ? defaultEndBorderColor : endBorderColor;
+		if( color == startBg && endBg != null && !startBg.equals( endBg ) )
+			color = new GradientPaint( 0, 0, startBg, 0, c.getHeight(), endBg );
+
+		return color;
 	}
 
 	@Override

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

@@ -23,9 +23,11 @@ import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.FontMetrics;
+import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Rectangle;
+import java.awt.geom.RoundRectangle2D;
 import javax.swing.AbstractButton;
 import javax.swing.ButtonModel;
 import javax.swing.Icon;
@@ -39,6 +41,7 @@ import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicButtonUI;
 import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JButton}.
@@ -58,16 +61,24 @@ import com.formdev.flatlaf.FlatLaf;
  * @uiDefault Button.arc						int
  * @uiDefault Button.minimumWidth				int
  * @uiDefault Button.iconTextGap				int
+ * @uiDefault Button.startBackground			Color	optional; if set, a gradient paint is used and Button.background is ignored
+ * @uiDefault Button.endBackground				Color	optional; if set, a gradient paint is used
  * @uiDefault Button.focusedBackground			Color	optional
  * @uiDefault Button.hoverBackground			Color	optional
  * @uiDefault Button.pressedBackground			Color	optional
  * @uiDefault Button.disabledText				Color
  * @uiDefault Button.default.background			Color
+ * @uiDefault Button.default.startBackground	Color	optional; if set, a gradient paint is used and Button.default.background is ignored
+ * @uiDefault Button.default.endBackground		Color	optional; if set, a gradient paint is used
  * @uiDefault Button.default.foreground			Color
  * @uiDefault Button.default.focusedBackground	Color	optional
  * @uiDefault Button.default.hoverBackground	Color	optional
  * @uiDefault Button.default.pressedBackground	Color	optional
  * @uiDefault Button.default.boldText			boolean
+ * @uiDefault Button.paintShadow				boolean	default is false
+ * @uiDefault Button.shadowWidth				int		default is 2
+ * @uiDefault Button.shadowColor				Color	optional
+ * @uiDefault Button.default.shadowColor		Color	optional
  * @uiDefault Button.toolbar.hoverBackground	Color
  * @uiDefault Button.toolbar.pressedBackground	Color
  *
@@ -81,18 +92,25 @@ public class FlatButtonUI
 	protected int minimumWidth;
 	protected int iconTextGap;
 
+	protected Color startBackground;
+	protected Color endBackground;
 	protected Color focusedBackground;
 	protected Color hoverBackground;
 	protected Color pressedBackground;
 	protected Color disabledText;
 
 	protected Color defaultBackground;
+	protected Color defaultEndBackground;
 	protected Color defaultForeground;
 	protected Color defaultFocusedBackground;
 	protected Color defaultHoverBackground;
 	protected Color defaultPressedBackground;
 	protected boolean defaultBoldText;
 
+	protected int shadowWidth;
+	protected Color shadowColor;
+	protected Color defaultShadowColor;
+
 	protected Color toolbarHoverBackground;
 	protected Color toolbarPressedBackground;
 
@@ -116,16 +134,25 @@ public class FlatButtonUI
 			String prefix = getPropertyPrefix();
 
 			focusWidth = UIManager.getInt( "Component.focusWidth" );
-			arc = UIManager.getInt( prefix + "arc" );
+			arc = UIManager.getInt( "Button.arc" );
 			minimumWidth = UIManager.getInt( prefix + "minimumWidth" );
 			iconTextGap = FlatUIUtils.getUIInt( prefix + "iconTextGap", 4 );
 
+			startBackground = UIManager.getColor( prefix + "startBackground" );
+			endBackground = UIManager.getColor( prefix + "endBackground" );
 			focusedBackground = UIManager.getColor( prefix + "focusedBackground" );
 			hoverBackground = UIManager.getColor( prefix + "hoverBackground" );
 			pressedBackground = UIManager.getColor( prefix + "pressedBackground" );
 			disabledText = UIManager.getColor( prefix + "disabledText" );
 
-			defaultBackground = UIManager.getColor( "Button.default.background" );
+			if( UIManager.getBoolean( "Button.paintShadow" ) ) {
+				shadowWidth = FlatUIUtils.getUIInt( "Button.shadowWidth", 2 );
+				shadowColor = UIManager.getColor( "Button.shadowColor" );
+				defaultShadowColor = UIManager.getColor( "Button.default.shadowColor" );
+			}
+
+			defaultBackground = FlatUIUtils.getUIColor( "Button.default.startBackground", "Button.default.background" );
+			defaultEndBackground = UIManager.getColor( "Button.default.endBackground" );
 			defaultForeground = UIManager.getColor( "Button.default.foreground" );
 			defaultFocusedBackground = UIManager.getColor( "Button.default.focusedBackground" );
 			defaultHoverBackground = UIManager.getColor( "Button.default.hoverBackground" );
@@ -140,6 +167,12 @@ public class FlatButtonUI
 			defaults_initialized = true;
 		}
 
+		if( startBackground != null ) {
+			Color bg = b.getBackground();
+			if( bg == null || bg instanceof UIResource )
+				b.setBackground( startBackground );
+		}
+
 		LookAndFeel.installProperty( b, "opaque", false );
 		LookAndFeel.installProperty( b, "iconTextGap", scale( iconTextGap ) );
 
@@ -201,9 +234,24 @@ public class FlatButtonUI
 					Border border = c.getBorder();
 					float focusWidth = (border instanceof FlatBorder) ? scale( (float) this.focusWidth ) : 0;
 					float arc = (border instanceof FlatButtonBorder || isToolBarButton( c )) ? scale( (float) this.arc ) : 0;
+					boolean def = isDefaultButton( c );
 
-					FlatUIUtils.setColor( g2, background, isDefaultButton(c) ? defaultBackground : c.getBackground() );
-					FlatUIUtils.fillRoundRectangle( g2, 0, 0, c.getWidth(), c.getHeight(), focusWidth, arc );
+					// paint shadow
+					Color shadowColor = def ? defaultShadowColor : this.shadowColor;
+					if( 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 ) );
+					}
+
+					// 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 ) );
+					else
+						FlatUIUtils.setColor( g2, background, def ? defaultBackground : c.getBackground() );
+					FlatUIUtils.paintComponentBackground( g2, 0, 0, c.getWidth(), c.getHeight(), focusWidth, arc );
 				} finally {
 					g2.dispose();
 				}

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

@@ -52,6 +52,7 @@ import javax.swing.plaf.basic.BasicComboBoxUI;
 import javax.swing.plaf.basic.BasicComboPopup;
 import javax.swing.plaf.basic.ComboPopup;
 import javax.swing.text.JTextComponent;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -239,7 +240,8 @@ public class FlatComboBoxUI
 				} else if( editor != null && source == comboBox && propertyName == "componentOrientation" ) {
 					ComponentOrientation o = (ComponentOrientation) e.getNewValue();
 					editor.applyComponentOrientation( o );
-				}
+				} else if( editor != null && FlatClientProperties.PLACEHOLDER_TEXT.equals( propertyName ) )
+					editor.repaint();
 			}
 		};
 	}
@@ -316,7 +318,7 @@ public class FlatComboBoxUI
 		g2.setColor( enabled
 			? (editableBackground != null && comboBox.isEditable() ? editableBackground : c.getBackground())
 			: getDisabledBackground( comboBox ) );
-		FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 
 		// paint arrow button background
 		if( enabled ) {
@@ -326,7 +328,7 @@ public class FlatComboBoxUI
 				g2.clipRect( arrowX, 0, width - arrowX, height );
 			else
 				g2.clipRect( 0, 0, arrowX + arrowWidth, height );
-			FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+			FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 			g2.setClip( oldClip );
 		}
 
@@ -335,7 +337,7 @@ public class FlatComboBoxUI
 			g2.setColor( enabled ? borderColor : disabledBorderColor );
 			float lw = scale( 1f );
 			float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
-			g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - (focusWidth * 2) ) );
+			g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2)) );
 		}
 
 		paint( g, c );

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

@@ -39,8 +39,10 @@ import javax.swing.plaf.ComponentUI;
  *
  * <!-- FlatTextFieldUI -->
  *
- * @uiDefault Component.focusWidth				int
- * @uiDefault Component.minimumWidth			int
+ * @uiDefault Component.focusWidth						int
+ * @uiDefault Component.minimumWidth					int
+ * @uiDefault Component.isIntelliJTheme					boolean
+ * @uiDefault FormattedTextField.placeholderForeground	Color
  *
  * @author Karl Tauber
  */

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

@@ -48,7 +48,7 @@ public class FlatLineBorder
 		try {
 			FlatUIUtils.setRenderingHints( g2 );
 			g2.setColor( lineColor );
-			FlatUIUtils.drawRoundRectangle( g2, x, y, width, height, 0f, scale( 1f ), 0f );
+			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, 0f, scale( 1f ), 0f );
 		} finally {
 			g2.dispose();
 		}

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

@@ -17,14 +17,17 @@
 package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.event.FocusListener;
+import java.beans.PropertyChangeEvent;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicPasswordFieldUI;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.SystemInfo;
 
 /**
@@ -51,6 +54,7 @@ import com.formdev.flatlaf.util.SystemInfo;
  * @uiDefault Component.focusWidth					int
  * @uiDefault Component.minimumWidth				int
  * @uiDefault Component.isIntelliJTheme				boolean
+ * @uiDefault PasswordField.placeholderForeground	Color
  *
  * @author Karl Tauber
  */
@@ -60,6 +64,7 @@ public class FlatPasswordFieldUI
 	protected int focusWidth;
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
+	protected Color placeholderForeground;
 
 	private FocusListener focusListener;
 
@@ -75,9 +80,11 @@ public class FlatPasswordFieldUI
 		if( SystemInfo.IS_MAC )
 			LookAndFeel.installProperty( getComponent(), "echoChar", '\u2022' );
 
+		String prefix = getPropertyPrefix();
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
+		placeholderForeground = UIManager.getColor( prefix + ".placeholderForeground" );
 
 		LookAndFeel.installProperty( getComponent(), "opaque", focusWidth == 0 );
 
@@ -88,6 +95,8 @@ public class FlatPasswordFieldUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		placeholderForeground = null;
+
 		MigLayoutVisualPadding.uninstall( getComponent() );
 	}
 
@@ -107,9 +116,18 @@ public class FlatPasswordFieldUI
 		focusListener = null;
 	}
 
+	@Override
+	protected void propertyChange( PropertyChangeEvent e ) {
+		super.propertyChange( e );
+
+		if( FlatClientProperties.PLACEHOLDER_TEXT.equals( e.getPropertyName() ) )
+			getComponent().repaint();
+	}
+
 	@Override
 	protected void paintSafely( Graphics g ) {
 		FlatTextFieldUI.paintBackground( g, getComponent(), focusWidth, isIntelliJTheme );
+		FlatTextFieldUI.paintPlaceholder( g, getComponent(), placeholderForeground );
 		super.paintSafely( g );
 	}
 

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

@@ -17,13 +17,16 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Dimension;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.geom.Area;
 import java.awt.geom.RoundRectangle2D;
 import javax.swing.JComponent;
 import javax.swing.JProgressBar;
 import javax.swing.LookAndFeel;
+import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicProgressBarUI;
 import com.formdev.flatlaf.util.UIScale;
@@ -44,11 +47,19 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault ProgressBar.repaintInterval			int		default is 50 milliseconds
  * @uiDefault ProgressBar.cycleTime					int		default is 3000 milliseconds
  *
+ * <!-- FlatProgressBarUI -->
+ *
+ * @uiDefault ProgressBar.arc						int
+ *
  * @author Karl Tauber
  */
 public class FlatProgressBarUI
 	extends BasicProgressBarUI
 {
+	protected int arc;
+	protected Dimension horizontalSize;
+	protected Dimension verticalSize;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatProgressBarUI();
 	}
@@ -58,16 +69,37 @@ public class FlatProgressBarUI
 		super.installDefaults();
 
 		LookAndFeel.installProperty( progressBar, "opaque", false );
+
+		arc = UIManager.getInt( "ProgressBar.arc" );
+		horizontalSize = UIManager.getDimension( "ProgressBar.horizontalSize" );
+		verticalSize = UIManager.getDimension( "ProgressBar.verticalSize" );
+	}
+
+	@Override
+	public Dimension getPreferredSize( JComponent c ) {
+		Dimension size = super.getPreferredSize( c );
+
+		if( progressBar.isStringPainted() ) {
+			// recalculate progress height/width to make it smaller
+			Insets insets = progressBar.getInsets();
+			FontMetrics fm = progressBar.getFontMetrics( progressBar.getFont() );
+			if( progressBar.getOrientation() == JProgressBar.HORIZONTAL )
+				size.height = Math.max( fm.getHeight() + insets.top + insets.bottom, getPreferredInnerHorizontal().height );
+			else
+				size.width = Math.max( fm.getHeight() + insets.left + insets.right, getPreferredInnerVertical().width );
+		}
+
+		return size;
 	}
 
 	@Override
 	protected Dimension getPreferredInnerHorizontal() {
-		return UIScale.scale( super.getPreferredInnerHorizontal() );
+		return UIScale.scale( horizontalSize );
 	}
 
 	@Override
 	protected Dimension getPreferredInnerVertical() {
-		return UIScale.scale( super.getPreferredInnerVertical() );
+		return UIScale.scale( verticalSize );
 	}
 
 	@Override
@@ -90,13 +122,14 @@ public class FlatProgressBarUI
 			return;
 
 		boolean horizontal = (progressBar.getOrientation() == JProgressBar.HORIZONTAL);
-		int arc = horizontal ? height : width;
+		int arc = Math.min( UIScale.scale( this.arc ), horizontal ? height : width );
 
 		FlatUIUtils.setRenderingHints( (Graphics2D) g );
 
 		// paint track
+		RoundRectangle2D.Float trackShape = new RoundRectangle2D.Float( x, y, width, height, arc, arc );
 		g.setColor( progressBar.getBackground() );
-		((Graphics2D)g).fill( new RoundRectangle2D.Float( x, y, width, height, arc, arc ) );
+		((Graphics2D)g).fill( trackShape );
 
 		// paint progress
 		if( progressBar.isIndeterminate() ) {
@@ -112,11 +145,19 @@ public class FlatProgressBarUI
 		} else {
 			int amountFull = getAmountFull( insets, width, height );
 
-			g.setColor( progressBar.getForeground() );
-			((Graphics2D)g).fill( horizontal
+			RoundRectangle2D.Float progressShape = horizontal
 				? new RoundRectangle2D.Float( c.getComponentOrientation().isLeftToRight() ? x : x + (width - amountFull),
 					y, amountFull, height, arc, arc )
-				: new RoundRectangle2D.Float( x, y + (height - amountFull), width, amountFull, arc, arc ) );
+				: new RoundRectangle2D.Float( x, y + (height - amountFull), width, amountFull, arc, arc );
+
+			g.setColor( progressBar.getForeground() );
+			if( amountFull < (horizontal ? height : width) ) {
+				// special painting for low amounts to avoid painting outside of track
+				Area area = new Area( trackShape );
+				area.intersect( new Area( progressShape ) );
+				((Graphics2D)g).fill( area );
+			} else
+				((Graphics2D)g).fill( progressShape );
 
 			if( progressBar.isStringPainted() )
 				paintString( g, x, y, width, height, amountFull, insets );

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

@@ -18,7 +18,9 @@ package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
+import java.awt.Dimension;
 import java.awt.Graphics;
+import java.awt.Insets;
 import java.awt.Rectangle;
 import javax.swing.AbstractButton;
 import javax.swing.CellRendererPane;
@@ -28,6 +30,8 @@ import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicRadioButtonUI;
+import com.formdev.flatlaf.icons.FlatCheckBoxIcon;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JRadioButton}.
@@ -92,6 +96,26 @@ public class FlatRadioButtonUI
 		defaults_initialized = false;
 	}
 
+	private static Insets tempInsets = new Insets( 0, 0, 0, 0 );
+
+	@Override
+	public Dimension getPreferredSize( JComponent c ) {
+		Dimension size = super.getPreferredSize( c );
+
+		// small insets fix
+		int focusWidth = getIconFocusWidth( c );
+		if( focusWidth > 0 ) {
+			// Increase preferred width and height if insets were explicitly reduced (e.g. with
+			// an EmptyBorder) and icon has a focus width, which is not included in icon size.
+			// Otherwise the component may be too small and outer focus border may be cut off.
+			Insets insets = c.getInsets( tempInsets );
+			size.width += Math.max( focusWidth - insets.left, 0 ) + Math.max( focusWidth - insets.right, 0 );
+			size.height += Math.max( focusWidth - insets.top, 0 ) + Math.max( focusWidth - insets.bottom, 0 );
+		}
+
+		return size;
+	}
+
 	@Override
 	public void paint( Graphics g, JComponent c ) {
 		// fill background even if opaque if
@@ -104,6 +128,29 @@ public class FlatRadioButtonUI
 			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
 		}
 
+		// small insets fix
+		int focusWidth = getIconFocusWidth( c );
+		if( focusWidth > 0 ) {
+			boolean ltr = c.getComponentOrientation().isLeftToRight();
+			Insets insets = c.getInsets( tempInsets );
+			int leftOrRightInset = ltr ? insets.left : insets.right;
+			if( focusWidth > leftOrRightInset ) {
+				// The left (or right) inset is smaller than the focus width, which may be
+				// the case if insets were explicitly reduced (e.g. with an EmptyBorder).
+				// In this case the width has been increased in getPreferredSize() and
+				// here it is necessary to fix icon and text painting location.
+				int offset = focusWidth - leftOrRightInset;
+				if( !ltr )
+					offset = -offset;
+
+				// move the graphics origin to the left (or right)
+				g.translate( offset, 0 );
+				super.paint( g, c );
+				g.translate( -offset, 0 );
+				return;
+			}
+		}
+
 		super.paint( g, c );
 	}
 
@@ -111,4 +158,11 @@ public class FlatRadioButtonUI
 	protected void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text ) {
 		FlatButtonUI.paintText( g, b, textRect, text, b.isEnabled() ? b.getForeground() : disabledText );
 	}
+
+	private int getIconFocusWidth( JComponent c ) {
+		AbstractButton b = (AbstractButton) c;
+		return (b.getIcon() == null && getDefaultIcon() instanceof FlatCheckBoxIcon)
+			? UIScale.scale( ((FlatCheckBoxIcon)getDefaultIcon()).focusWidth )
+			: 0;
+	}
 }

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

@@ -22,11 +22,16 @@ import java.awt.Graphics;
 import java.awt.Rectangle;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.util.Objects;
 import javax.swing.JButton;
 import javax.swing.JComponent;
+import javax.swing.JScrollPane;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicScrollBarUI;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -38,13 +43,20 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault ScrollBar.foreground			Color
  * @uiDefault ScrollBar.track				Color
  * @uiDefault ScrollBar.thumb				Color
- * @uiDefault ScrollBar.hoverTrackColor		Color
- * @uiDefault ScrollBar.hoverThumbColor		Color
  * @uiDefault ScrollBar.width				int
  * @uiDefault ScrollBar.minimumThumbSize	Dimension
  * @uiDefault ScrollBar.maximumThumbSize	Dimension
  * @uiDefault ScrollBar.allowsAbsolutePositioning	boolean
  *
+ * <!-- FlatScrollBarUI -->
+ *
+ * @uiDefault ScrollBar.hoverTrackColor				Color
+ * @uiDefault ScrollBar.hoverThumbColor				Color
+ * @uiDefault Component.arrowType					String	triangle (default) or chevron
+ * @uiDefault ScrollBar.showButtons					boolean
+ * @uiDefault ScrollBar.buttonArrowColor			Color
+ * @uiDefault ScrollBar.buttonDisabledArrowColor	Color
+ *
  * @author Karl Tauber
  */
 public class FlatScrollBarUI
@@ -53,6 +65,11 @@ public class FlatScrollBarUI
 	protected Color hoverTrackColor;
 	protected Color hoverThumbColor;
 
+	protected boolean showButtons;
+	protected String arrowType;
+	protected Color buttonArrowColor;
+	protected Color buttonDisabledArrowColor;
+
 	private MouseAdapter hoverListener;
 	private boolean hoverTrack;
 	private boolean hoverThumb;
@@ -85,6 +102,11 @@ public class FlatScrollBarUI
 
 		hoverTrackColor = UIManager.getColor( "ScrollBar.hoverTrackColor" );
 		hoverThumbColor = UIManager.getColor( "ScrollBar.hoverThumbColor" );
+
+		showButtons = UIManager.getBoolean( "ScrollBar.showButtons" );
+		arrowType = UIManager.getString( "Component.arrowType" );
+		buttonArrowColor = UIManager.getColor( "ScrollBar.buttonArrowColor" );
+		buttonDisabledArrowColor = UIManager.getColor( "ScrollBar.buttonDisabledArrowColor" );
 	}
 
 	@Override
@@ -93,6 +115,24 @@ public class FlatScrollBarUI
 
 		hoverTrackColor = null;
 		hoverThumbColor = null;
+
+		buttonArrowColor = null;
+		buttonDisabledArrowColor = null;
+	}
+
+	@Override
+	protected PropertyChangeListener createPropertyChangeListener() {
+		return new BasicScrollBarUI.PropertyChangeHandler() {
+			@Override
+			public void propertyChange( PropertyChangeEvent e ) {
+				super.propertyChange( e );
+
+				if( FlatClientProperties.SCROLL_BAR_SHOW_BUTTONS.equals( e.getPropertyName() ) ) {
+					scrollbar.revalidate();
+					scrollbar.repaint();
+				}
+			}
+		};
 	}
 
 	@Override
@@ -102,24 +142,50 @@ public class FlatScrollBarUI
 
 	@Override
 	protected JButton createDecreaseButton( int orientation ) {
-		return createInvisibleButton();
+		return createArrowButton( orientation );
 	}
 
 	@Override
 	protected JButton createIncreaseButton( int orientation ) {
-		return createInvisibleButton();
+		return createArrowButton( orientation );
 	}
 
-	private JButton createInvisibleButton() {
-		JButton button = new JButton();
-		button.setMinimumSize( new Dimension() );
-		button.setMaximumSize( new Dimension() );
-		button.setPreferredSize( new Dimension() );
+	private JButton createArrowButton( int orientation ) {
+		FlatArrowButton button = new FlatArrowButton( orientation,
+			arrowType, buttonArrowColor, buttonDisabledArrowColor, null, hoverTrackColor )
+		{
+			@Override
+			public Dimension getPreferredSize() {
+				if( isShowButtons() ) {
+					int w = UIScale.scale( scrollBarWidth );
+					return new Dimension( w, w );
+				} else
+					return new Dimension();
+			}
+
+			@Override
+			public Dimension getMinimumSize() {
+				return isShowButtons() ? super.getMinimumSize() : new Dimension();
+			}
+
+			@Override
+			public Dimension getMaximumSize() {
+				return isShowButtons() ? super.getMaximumSize() : new Dimension();
+			}
+		};
+		button.setArrowWidth( FlatArrowButton.DEFAULT_ARROW_WIDTH - 2 );
 		button.setFocusable( false );
 		button.setRequestFocusEnabled( false );
 		return button;
 	}
 
+	private boolean isShowButtons() {
+		Object showButtons = scrollbar.getClientProperty( FlatClientProperties.SCROLL_BAR_SHOW_BUTTONS );
+		if( showButtons == null && scrollbar.getParent() instanceof JScrollPane )
+			showButtons = ((JScrollPane)scrollbar.getParent()).getClientProperty( FlatClientProperties.SCROLL_BAR_SHOW_BUTTONS );
+		return (showButtons != null) ? Objects.equals( showButtons, true ) : this.showButtons;
+	}
+
 	@Override
 	protected void paintDecreaseHighlight( Graphics g ) {
 		// do not paint

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

@@ -24,13 +24,16 @@ import java.awt.event.ContainerListener;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import javax.swing.JComponent;
+import javax.swing.JScrollBar;
 import javax.swing.JScrollPane;
 import javax.swing.JViewport;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicScrollPaneUI;
+import com.formdev.flatlaf.FlatClientProperties;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JScrollPane}.
@@ -87,7 +90,30 @@ public class FlatScrollPaneUI
 		handler = null;
 	}
 
-	public Handler getHandler() {
+	@Override
+	protected PropertyChangeListener createPropertyChangeListener() {
+		return new BasicScrollPaneUI.PropertyChangeHandler() {
+			@Override
+			public void propertyChange( PropertyChangeEvent e ) {
+				super.propertyChange( e );
+
+				if( FlatClientProperties.SCROLL_BAR_SHOW_BUTTONS.equals( e.getPropertyName() ) ) {
+					JScrollBar vsb = scrollpane.getVerticalScrollBar();
+					JScrollBar hsb = scrollpane.getHorizontalScrollBar();
+					if( vsb != null ) {
+						vsb.revalidate();
+						vsb.repaint();
+					}
+					if( hsb != null ) {
+						hsb.revalidate();
+						hsb.repaint();
+					}
+				}
+			}
+		};
+	}
+
+	private Handler getHandler() {
 		if( handler == null )
 			handler = new Handler();
 		return handler;

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

@@ -159,7 +159,7 @@ public class FlatSpinnerUI
 		handler = null;
 	}
 
-	public Handler getHandler() {
+	private Handler getHandler() {
 		if( handler == null )
 			handler = new Handler();
 		return handler;
@@ -267,7 +267,7 @@ public class FlatSpinnerUI
 		g2.setColor( enabled
 			? c.getBackground()
 			: (isIntelliJTheme ? FlatUIUtils.getParentBackground( c ) : disabledBackground) );
-		FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 
 		// paint arrow buttons background
 		if( enabled ) {
@@ -277,7 +277,7 @@ public class FlatSpinnerUI
 				g2.clipRect( arrowX, 0, width - arrowX, height );
 			else
 				g2.clipRect( 0, 0, arrowX + arrowWidth, height );
-			FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+			FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 			g2.setClip( oldClip );
 		}
 
@@ -285,7 +285,7 @@ public class FlatSpinnerUI
 		g2.setColor( enabled ? borderColor : disabledBorderColor );
 		float lw = scale( 1f );
 		float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
-		g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - (focusWidth * 2) ) );
+		g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2) ) );
 
 		paint( g, c );
 	}

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

@@ -41,6 +41,7 @@ import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTabbedPaneUI;
 import javax.swing.text.View;
 import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JTabbedPane}.
@@ -53,11 +54,13 @@ import com.formdev.flatlaf.FlatLaf;
  * @uiDefault TabbedPane.foreground						Color
  * @uiDefault TabbedPane.shadow							Color	used for scroll arrows and cropped line
  * @uiDefault TabbedPane.disabledForeground				Color
+ * @uiDefault TabbedPane.selectedBackground				Color	optional
  * @uiDefault TabbedPane.selectedForeground				Color
  * @uiDefault TabbedPane.underlineColor					Color
  * @uiDefault TabbedPane.disabledUnderlineColor			Color
  * @uiDefault TabbedPane.hoverColor						Color
  * @uiDefault TabbedPane.focusColor						Color
+ * @uiDefault TabbedPane.tabSeparatorColor				Color	optional; defaults to TabbedPane.contentAreaColor
  * @uiDefault TabbedPane.contentAreaColor				Color
  * @uiDefault TabbedPane.textIconGap					int
  * @uiDefault TabbedPane.tabInsets						Insets
@@ -65,6 +68,7 @@ import com.formdev.flatlaf.FlatLaf;
  * @uiDefault TabbedPane.tabHeight						int
  * @uiDefault TabbedPane.tabSelectionHeight				int
  * @uiDefault TabbedPane.contentSeparatorHeight			int
+ * @uiDefault TabbedPane.showTabSeparators				boolean
  * @uiDefault TabbedPane.hasFullBorder					boolean
  *
  * @author Karl Tauber
@@ -73,16 +77,19 @@ public class FlatTabbedPaneUI
 	extends BasicTabbedPaneUI
 {
 	protected Color disabledForeground;
+	protected Color selectedBackground;
 	protected Color selectedForeground;
 	protected Color underlineColor;
 	protected Color disabledUnderlineColor;
 	protected Color hoverColor;
 	protected Color focusColor;
+	protected Color tabSeparatorColor;
 	protected Color contentAreaColor;
 
 	protected int tabHeight;
 	protected int tabSelectionHeight;
 	protected int contentSeparatorHeight;
+	protected boolean showTabSeparators;
 	protected boolean hasFullBorder;
 	protected boolean tabsOverlapBorder;
 
@@ -95,16 +102,19 @@ public class FlatTabbedPaneUI
 		super.installDefaults();
 
 		disabledForeground = UIManager.getColor( "TabbedPane.disabledForeground" );
+		selectedBackground = UIManager.getColor( "TabbedPane.selectedBackground" );
 		selectedForeground = UIManager.getColor( "TabbedPane.selectedForeground" );
 		underlineColor = UIManager.getColor( "TabbedPane.underlineColor" );
 		disabledUnderlineColor = UIManager.getColor( "TabbedPane.disabledUnderlineColor" );
 		hoverColor = UIManager.getColor( "TabbedPane.hoverColor" );
 		focusColor = UIManager.getColor( "TabbedPane.focusColor" );
+		tabSeparatorColor = UIManager.getColor( "TabbedPane.tabSeparatorColor" );
 		contentAreaColor = UIManager.getColor( "TabbedPane.contentAreaColor" );
 
 		tabHeight = UIManager.getInt( "TabbedPane.tabHeight" );
 		tabSelectionHeight = UIManager.getInt( "TabbedPane.tabSelectionHeight" );
 		contentSeparatorHeight = UIManager.getInt( "TabbedPane.contentSeparatorHeight" );
+		showTabSeparators = UIManager.getBoolean( "TabbedPane.showTabSeparators" );
 		hasFullBorder = UIManager.getBoolean( "TabbedPane.hasFullBorder" );
 		tabsOverlapBorder = UIManager.getBoolean( "TabbedPane.tabsOverlapBorder" );
 
@@ -124,11 +134,13 @@ public class FlatTabbedPaneUI
 		super.uninstallDefaults();
 
 		disabledForeground = null;
+		selectedBackground = null;
 		selectedForeground = null;
 		underlineColor = null;
 		disabledUnderlineColor = null;
 		hoverColor = null;
 		focusColor = null;
+		tabSeparatorColor = null;
 		contentAreaColor = null;
 
 		MigLayoutVisualPadding.uninstall( tabPane );
@@ -141,9 +153,12 @@ public class FlatTabbedPaneUI
 			public void propertyChange( PropertyChangeEvent e ) {
 				super.propertyChange( e );
 
-				if( TABBED_PANE_HAS_FULL_BORDER.equals( e.getPropertyName() ) ) {
-					tabPane.revalidate();
-					tabPane.repaint();
+				switch( e.getPropertyName() ) {
+					case TABBED_PANE_SHOW_TAB_SEPARATORS:
+					case TABBED_PANE_HAS_FULL_BORDER:
+						tabPane.revalidate();
+						tabPane.repaint();
+						break;
 				}
 			}
 		};
@@ -197,7 +212,7 @@ public class FlatTabbedPaneUI
 	 */
 	@Override
 	protected Insets getContentBorderInsets( int tabPlacement ) {
-		boolean hasFullBorder = this.hasFullBorder || clientPropertyEquals( tabPane, TABBED_PANE_HAS_FULL_BORDER, true );
+		boolean hasFullBorder = clientPropertyBoolean( tabPane, TABBED_PANE_HAS_FULL_BORDER, this.hasFullBorder );
 		int sh = scale( contentSeparatorHeight );
 		Insets insets = hasFullBorder ? new Insets( sh, sh, sh, sh ) : new Insets( sh, 0, 0, 0 );
 
@@ -262,7 +277,9 @@ public class FlatTabbedPaneUI
 			? hoverColor
 			: (enabled && isSelected && tabPane.hasFocus()
 				? focusColor
-				: tabPane.getBackgroundAt( tabIndex )) );
+				: (selectedBackground != null && enabled && isSelected
+					? selectedBackground
+					: tabPane.getBackgroundAt( tabIndex ))) );
 		g.fillRect( x, y, w, h );
 	}
 
@@ -270,6 +287,26 @@ public class FlatTabbedPaneUI
 	protected void paintTabBorder( Graphics g, int tabPlacement, int tabIndex,
 		int x, int y, int w, int h, boolean isSelected )
 	{
+		// paint tab separators
+		if( clientPropertyBoolean( tabPane, TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators ) &&
+			!isLastInRun( tabIndex ) )
+		{
+			float sepWidth = UIScale.scale( 1f );
+			float offset = UIScale.scale( 5f );
+
+			g.setColor( (tabSeparatorColor != null) ? tabSeparatorColor : contentAreaColor );
+			if( tabPlacement == LEFT || tabPlacement == RIGHT ) {
+				// paint tab separator at bottom side
+				((Graphics2D)g).fill( new Rectangle2D.Float( x + offset, y + h - sepWidth, w - (offset * 2), sepWidth ) );
+			} else if( tabPane.getComponentOrientation().isLeftToRight() ) {
+				// paint tab separator at right side
+				((Graphics2D)g).fill( new Rectangle2D.Float( x + w - sepWidth, y + offset, sepWidth, h - (offset * 2) ) );
+			} else {
+				// paint tab separator at left side
+				((Graphics2D)g).fill( new Rectangle2D.Float( x, y + offset, sepWidth, h - (offset * 2) ) );
+			}
+		}
+
 		if( isSelected )
 			paintTabSelection( g, tabPlacement, x, y, w, h );
 	}
@@ -334,7 +371,7 @@ public class FlatTabbedPaneUI
 	}
 
 	/**
-	 * Actually does the nearly the same as super.paintContentBorder() but
+	 * Actually does nearly the same as super.paintContentBorder() but
 	 *   - not using UIManager.getColor("TabbedPane.contentAreaColor") to be GUI builder friendly
 	 *   - not invoking paintContentBorder*Edge() methods
 	 *   - repaint selection
@@ -379,7 +416,7 @@ public class FlatTabbedPaneUI
 		}
 
 		// compute insets for separator or full border
-		boolean hasFullBorder = this.hasFullBorder || clientPropertyEquals( tabPane, TABBED_PANE_HAS_FULL_BORDER, true );
+		boolean hasFullBorder = clientPropertyBoolean( tabPane, TABBED_PANE_HAS_FULL_BORDER, this.hasFullBorder );
 		int sh = scale( contentSeparatorHeight * 100 ); // multiply by 100 because rotateInsets() does not use floats
 		Insets ci = new Insets( 0, 0, 0, 0 );
 		rotateInsets( hasFullBorder ? new Insets( sh, sh, sh, sh ) : new Insets( sh, 0, 0, 0 ), ci, tabPlacement );
@@ -414,6 +451,11 @@ public class FlatTabbedPaneUI
 	{
 	}
 
+	private boolean isLastInRun( int tabIndex ) {
+		int run = getRunForTab( tabPane.getTabCount(), tabIndex );
+		return lastTabInRun( tabPane.getTabCount(), run ) == tabIndex;
+	}
+
 	private boolean isScrollTabLayout() {
 		return tabPane.getTabLayoutPolicy() == JTabbedPane.SCROLL_TAB_LAYOUT;
 	}

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

@@ -20,9 +20,12 @@ import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
 import java.awt.event.FocusListener;
+import java.beans.PropertyChangeEvent;
 import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JSpinner;
@@ -33,6 +36,7 @@ import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTextFieldUI;
 import javax.swing.text.JTextComponent;
+import com.formdev.flatlaf.FlatClientProperties;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JTextField}.
@@ -57,6 +61,7 @@ import javax.swing.text.JTextComponent;
  * @uiDefault Component.focusWidth				int
  * @uiDefault Component.minimumWidth			int
  * @uiDefault Component.isIntelliJTheme			boolean
+ * @uiDefault TextField.placeholderForeground	Color
  *
  * @author Karl Tauber
  */
@@ -66,6 +71,7 @@ public class FlatTextFieldUI
 	protected int focusWidth;
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
+	protected Color placeholderForeground;
 
 	private FocusListener focusListener;
 
@@ -77,9 +83,11 @@ public class FlatTextFieldUI
 	protected void installDefaults() {
 		super.installDefaults();
 
+		String prefix = getPropertyPrefix();
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
+		placeholderForeground = UIManager.getColor( prefix + ".placeholderForeground" );
 
 		LookAndFeel.installProperty( getComponent(), "opaque", focusWidth == 0 );
 
@@ -90,6 +98,8 @@ public class FlatTextFieldUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		placeholderForeground = null;
+
 		MigLayoutVisualPadding.uninstall( getComponent() );
 	}
 
@@ -109,9 +119,18 @@ public class FlatTextFieldUI
 		focusListener = null;
 	}
 
+	@Override
+	protected void propertyChange( PropertyChangeEvent e ) {
+		super.propertyChange( e );
+
+		if( FlatClientProperties.PLACEHOLDER_TEXT.equals( e.getPropertyName() ) )
+			getComponent().repaint();
+	}
+
 	@Override
 	protected void paintSafely( Graphics g ) {
 		paintBackground( g, getComponent(), focusWidth, isIntelliJTheme );
+		paintPlaceholder( g, getComponent(), placeholderForeground );
 		super.paintSafely( g );
 	}
 
@@ -146,12 +165,37 @@ public class FlatTextFieldUI
 				: (isIntelliJTheme && (!c.isEnabled() || !c.isEditable())
 					? FlatUIUtils.getParentBackground( c )
 					: background) );
-			FlatUIUtils.fillRoundRectangle( g2, 0, 0, c.getWidth(), c.getHeight(), fFocusWidth, 0 );
+			FlatUIUtils.paintComponentBackground( g2, 0, 0, c.getWidth(), c.getHeight(), fFocusWidth, 0 );
 		} finally {
 			g2.dispose();
 		}
 	}
 
+	static void paintPlaceholder( Graphics g, JTextComponent c, Color placeholderForeground ) {
+		// check whether text component is empty
+		if( c.getDocument().getLength() > 0 )
+			return;
+
+		// check for JComboBox
+		Container parent = c.getParent();
+		JComponent jc = (parent instanceof JComboBox) ? (JComboBox<?>) parent : c;
+
+		// get placeholder text
+		Object placeholder = jc.getClientProperty( FlatClientProperties.PLACEHOLDER_TEXT );
+		if( !(placeholder instanceof String) )
+			return;
+
+		// compute placeholder location
+		Insets insets = c.getInsets();
+		FontMetrics fm = c.getFontMetrics( c.getFont() );
+		int x = insets.left;
+		int y = insets.top + fm.getAscent() + ((c.getHeight() - insets.top - insets.bottom - fm.getHeight()) / 2);
+
+		// paint placeholder
+		g.setColor( placeholderForeground );
+		FlatUIUtils.drawString( c, g, (String) placeholder, x, y );
+	}
+
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
 		return applyMinimumWidth( super.getPreferredSize( c ), c );

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

@@ -38,9 +38,11 @@ import javax.swing.plaf.ComponentUI;
  * <!-- FlatButtonUI -->
  *
  * @uiDefault Component.focusWidth						int
- * @uiDefault ToggleButton.arc							int
+ * @uiDefault Button.arc								int
  * @uiDefault ToggleButton.minimumWidth					int
  * @uiDefault ToggleButton.iconTextGap					int
+ * @uiDefault ToggleButton.startBackground				Color	optional; if set, a gradient paint is used and ToggleButton.background is ignored
+ * @uiDefault ToggleButton.endBackground				Color	optional; if set, a gradient paint is used
  * @uiDefault ToggleButton.pressedBackground			Color
  * @uiDefault ToggleButton.disabledText					Color
  * @uiDefault ToggleButton.toolbar.hoverBackground		Color

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

@@ -39,6 +39,7 @@ import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
 import javax.swing.plaf.ColorUIResource;
 import com.formdev.flatlaf.util.DerivedColor;
+import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.JavaCompatibility;
 import com.formdev.flatlaf.util.UIScale;
 
@@ -125,9 +126,73 @@ public class FlatUIUtils
 	}
 
 	/**
-	 * Draws a round rectangle.
+	 * Paints an outer border, which is usually a focus border.
+	 * <p>
+	 * The outside bounds of the painted border are {@code x,y,width,height}.
+	 * The line width of the painted border is {@code focusWidth + lineWidth}.
+	 * The given arc diameter refers to the inner rectangle ({@code x,y,width,height} minus {@code focusWidth}).
+	 *
+	 * @see #paintComponentBorder
+	 * @see #paintComponentBackground
 	 */
-	public static void drawRoundRectangle( Graphics2D g, int x, int y, int width, int height,
+	public static void paintComponentOuterBorder( Graphics2D g, int x, int y, int width, int height,
+		float focusWidth, float lineWidth, float arc )
+	{
+		double systemScaleFactor = UIScale.getSystemScaleFactor( g );
+		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
+			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
+			HiDPIUtils.paintAtScale1x( g, x, y, width, height, systemScaleFactor,
+				(g2d, x2, y2, width2, height2, scaleFactor) -> {
+					paintComponentOuterBorderImpl( g2d, x2, y2, width2, height2,
+						(float) (focusWidth * scaleFactor), (float) (lineWidth * scaleFactor), (float) (arc * scaleFactor) );
+				} );
+			return;
+		}
+
+		paintComponentOuterBorderImpl( g, x, y, width, height, focusWidth, lineWidth, arc );
+	}
+
+	private static void paintComponentOuterBorderImpl( Graphics2D g, int x, int y, int width, int height,
+		float focusWidth, float lineWidth, float arc )
+	{
+		float outerRadius = (arc > 0) ? arc + focusWidth - UIScale.scale( 2f ) : focusWidth;
+		float ow = focusWidth + lineWidth;
+		float innerRadius = outerRadius - ow;
+
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		path.append( createRoundRectanglePath( x, y, width, height, outerRadius, outerRadius, outerRadius, outerRadius ), false );
+		path.append( createRoundRectanglePath( x + ow, y + ow, width - (ow * 2), height - (ow * 2), innerRadius, innerRadius, innerRadius, innerRadius ), false );
+		g.fill( path );
+	}
+
+	/**
+	 * Draws the border of a component as round rectangle.
+	 * <p>
+	 * The outside bounds of the painted border are
+	 * {@code x + focusWidth, y + focusWidth, width - (focusWidth * 2), height - (focusWidth * 2)}.
+	 * The given arc diameter refers to the painted rectangle (and not to {@code x,y,width,height}).
+	 *
+	 * @see #paintComponentOuterBorder
+	 * @see #paintComponentBackground
+	 */
+	public static void paintComponentBorder( Graphics2D g, int x, int y, int width, int height,
+		float focusWidth, float lineWidth, float arc )
+	{
+		double systemScaleFactor = UIScale.getSystemScaleFactor( g );
+		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
+			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
+			HiDPIUtils.paintAtScale1x( g, x, y, width, height, systemScaleFactor,
+				(g2d, x2, y2, width2, height2, scaleFactor) -> {
+					paintComponentBorderImpl( g2d, x2, y2, width2, height2,
+						(float) (focusWidth * scaleFactor), (float) (lineWidth * scaleFactor), (float) (arc * scaleFactor) );
+				} );
+			return;
+		}
+
+		paintComponentBorderImpl( g, x, y, width, height, focusWidth, lineWidth, arc );
+	}
+
+	private static void paintComponentBorderImpl( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float lineWidth, float arc )
 	{
 		float arc2 = arc > lineWidth ? arc - lineWidth : 0f;
@@ -146,9 +211,33 @@ public class FlatUIUtils
 	}
 
 	/**
-	 * Fills a round rectangle.
+	 * Fills the background of a component with a round rectangle.
+	 * <p>
+	 * The bounds of the painted round rectangle are
+	 * {@code x + focusWidth, y + focusWidth, width - (focusWidth * 2), height - (focusWidth * 2)}.
+	 * The given arc diameter refers to the painted rectangle (and not to {@code x,y,width,height}).
+	 *
+	 * @see #paintComponentOuterBorder
+	 * @see #paintComponentBorder
 	 */
-	public static void fillRoundRectangle( Graphics2D g, int x, int y, int width, int height,
+	public static void paintComponentBackground( Graphics2D g, int x, int y, int width, int height,
+		float focusWidth, float arc )
+	{
+		double systemScaleFactor = UIScale.getSystemScaleFactor( g );
+		if( systemScaleFactor != 1 && systemScaleFactor != 2 ) {
+			// paint at scale 1x to avoid clipping on right and bottom edges at 125%, 150% or 175%
+			HiDPIUtils.paintAtScale1x( g, x, y, width, height, systemScaleFactor,
+				(g2d, x2, y2, width2, height2, scaleFactor) -> {
+					paintComponentBackgroundImpl( g2d, x2, y2, width2, height2,
+						(float) (focusWidth * scaleFactor), (float) (arc * scaleFactor) );
+				} );
+			return;
+		}
+
+		paintComponentBackgroundImpl( g, x, y, width, height, focusWidth, arc );
+	}
+
+	private static void paintComponentBackgroundImpl( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float arc )
 	{
 		g.fill( new RoundRectangle2D.Float(
@@ -189,25 +278,6 @@ public class FlatUIUtils
 		return null;
 	}
 
-	/**
-	 * Paints an outline border.
-	 */
-	public static void paintOutlineBorder( Graphics2D g, int x, int y, int width, int height,
-		float focusWidth, float lineWidth, float arc )
-	{
-		float outerArc = (arc > 0) ? arc + focusWidth - UIScale.scale( 2f ) : focusWidth;
-		float ow = focusWidth + lineWidth;
-
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
-		path.append( createOutlinePath( x, y, width, height, outerArc ), false );
-		path.append( createOutlinePath( x + ow, y + ow, width - (ow * 2), height - (ow * 2), outerArc - ow ), false );
-		g.fill( path );
-	}
-
-	private static Shape createOutlinePath( float x, float y, float width, float height, float arc ) {
-		return createRoundRectanglePath( x, y, width, height, arc, arc, arc, arc );
-	}
-
 	/**
 	 * Creates a not-filled rounded rectangle shape and allows specifying the line width and the radius or each corner.
 	 */
@@ -222,7 +292,7 @@ public class FlatUIUtils
 	}
 
 	/**
-	 * Creates a filled rounded rectangle shape and allows specifying the radius or each corner.
+	 * Creates a filled rounded rectangle shape and allows specifying the radius of each corner.
 	 */
 	public static Shape createRoundRectanglePath( float x, float y, float width, float height,
 		float arcTopLeft, float arcTopRight, float arcBottomLeft, float arcBottomRight )
@@ -256,10 +326,16 @@ public class FlatUIUtils
 		return rect;
 	}
 
+	/**
+	 * Creates a closed path for the given points.
+	 */
 	public static Path2D createPath( double... points ) {
 		return createPath( true, points );
 	}
 
+	/**
+	 * Creates a open or closed path for the given points.
+	 */
 	public static Path2D createPath( boolean close, double... points ) {
 		Path2D path = new Path2D.Float();
 		path.moveTo( points[0], points[1] );

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

@@ -0,0 +1,111 @@
+/*
+ * 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.util;
+
+import java.awt.Graphics2D;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import javax.swing.JComponent;
+
+/**
+ * @author Karl Tauber
+ */
+public class HiDPIUtils
+{
+	public interface Painter {
+		public void paint( Graphics2D g, int x, int y, int width, int height, double scaleFactor );
+	}
+
+	public static void paintAtScale1x( Graphics2D g, JComponent c, Painter painter ) {
+		paintAtScale1x( g, 0, 0, c.getWidth(), c.getHeight(), painter );
+	}
+
+	public static void paintAtScale1x( Graphics2D g, int x, int y, int width, int height, Painter painter ) {
+		paintAtScale1x( g, x, y, width, height, UIScale.getSystemScaleFactor( g ), painter );
+	}
+
+	/**
+	 * Paint at system scale factor 1x to avoid rounding issues at 125%, 150% and 175% scaling.
+	 * <p>
+	 * Scales the given Graphics2D down to 100% and invokes the
+	 * given painter passing scaled x, y, width and height.
+	 * <p>
+	 * Uses the same scaling calculation as the JRE uses.
+	 */
+	public static void paintAtScale1x( Graphics2D g, int x, int y, int width, int height,
+		double scaleFactor, Painter painter )
+	{
+		if( scaleFactor == 1 ) {
+			painter.paint( g, x, y, width, height, 1 );
+			return;
+		}
+
+		// save original transform
+		AffineTransform transform = g.getTransform();
+
+		// scale rectangle
+		Rectangle2D.Double scaledRect = scale( transform, x, y, width, height );
+
+		try {
+			// unscale to factor 1.0
+			double scale = 1.0 / scaleFactor;
+			g.scale( scale, scale );
+
+			// compute origin delta x/y
+			double dx = Math.floor( scaledRect.x ) - transform.getTranslateX();
+			double dy = Math.floor( scaledRect.y ) - transform.getTranslateY();
+
+			// move origin to make sure that origin x/y are at whole numbers
+			if( dx != 0 || dy != 0 )
+				g.translate( dx, dy );
+
+			int swidth = (int) scaledRect.width;
+			int sheight = (int) scaledRect.height;
+
+			// paint
+			painter.paint( g, 0, 0, swidth, sheight, scaleFactor );
+		} finally {
+			// restore original transform
+			g.setTransform( transform );
+		}
+	}
+
+	/**
+	 * Scales a rectangle in the same way as the JRE does in
+	 * sun.java2d.pipe.PixelToParallelogramConverter.fillRectangle(),
+	 * which is used by Graphics.fillRect().
+	 */
+	private static Rectangle2D.Double scale( AffineTransform transform, int x, int y, int width, int height ) {
+		double dx1 = transform.getScaleX();
+		double dy2 = transform.getScaleY();
+		double px = x * dx1 + transform.getTranslateX();
+		double py = y * dy2 + transform.getTranslateY();
+		dx1 *= width;
+		dy2 *= height;
+
+		double newx = normalize( px );
+		double newy = normalize( py );
+		dx1 = normalize( px + dx1 ) - newx;
+		dy2 = normalize( py + dy2 ) - newy;
+
+		return new Rectangle2D.Double( newx, newy, dx1, dy2 );
+	}
+
+	private static double normalize( double value ) {
+		return Math.floor( value + 0.25 ) + 0.25;
+	}
+}

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

@@ -1,77 +0,0 @@
-/*
- * 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.util;
-
-import static com.formdev.flatlaf.util.UIScale.scale;
-
-/**
- * A number that scales its value.
- *
- * NOTE:
- * Using ScaledNumber in UI defaults works only if the value is get with
- * sun.swing.DefaultLookup.getInt(), which is used by some basic UI delegates,
- * because this method uses "instanceof Number".
- * UIManager.getInt() on the other hand uses "instanceof Integer" and does not work.
- *
- * @author Karl Tauber
- */
-public class ScaledNumber
-	extends Number
-{
-	private final int value;
-
-	public ScaledNumber( int value ) {
-		this.value = value;
-	}
-
-	@Override
-	public int intValue() {
-		return scale( value );
-	}
-
-	@Override
-	public long longValue() {
-		return scale( value );
-	}
-
-	@Override
-	public float floatValue() {
-		return scale( (float) value );
-	}
-
-	@Override
-	public double doubleValue() {
-		return scale( (float) value );
-	}
-
-	@Override
-	public int hashCode() {
-		return Integer.hashCode( value );
-	}
-
-	@Override
-	public boolean equals( Object obj ) {
-		return (obj instanceof ScaledNumber)
-			? (value == ((ScaledNumber)obj).value)
-			: false;
-	}
-
-	@Override
-	public String toString() {
-		return Integer.toString( value );
-	}
-}

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

@@ -197,6 +197,14 @@ public class UIScale
 		return new FontUIResource( font.getFamily(), font.getStyle(), newFontSize );
 	}
 
+	/**
+	 * Scales the given font.
+	 */
+	public static FontUIResource scaleFont( FontUIResource font, float scaleFactor ) {
+		int newFontSize = Math.round( font.getSize() * scaleFactor );
+		return new FontUIResource( font.getFamily(), font.getStyle(), newFontSize );
+	}
+
 	/**
 	 * Similar to sun.java2d.SunGraphicsEnvironment.getScaleFactor(String)
 	 */

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

@@ -54,14 +54,14 @@
 *.acceleratorSelectionForeground=@selectionForeground
 
 
-#---- system ----
+#---- system colors ----
 
-control=@background
-controlText=@foreground
-infoText=@foreground
-text=@foreground
-textText=@foreground
-window=@background
+activeCaption=#434E60
+inactiveCaption=#393C3D
+controlHighlight=#616669
+controlLtHighlight=#303234
+controlShadow=#afb3b5
+controlDkShadow=#d7d9da
 
 
 #---- Button ----

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

@@ -25,8 +25,6 @@ Button.focusedBackground=null
 Button.default.background=#4A86C7
 Button.default.foreground=#f0f0f0
 Button.default.focusedBackground=null
-Button.default.hoverBackground=#5B91CC
-Button.default.pressedBackground=#6E9ED2
 Button.default.borderColor=#3167ad
 Button.default.hoverBorderColor=#a8cef6
 Button.default.focusedBorderColor=#a8cef6

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

@@ -61,6 +61,30 @@ ViewportUI=com.formdev.flatlaf.ui.FlatViewportUI
 @textComponentMargin=2,6,2,6
 
 
+#---- system colors ----
+
+desktop=@textComponentBackground
+activeCaptionText=@foreground
+activeCaptionBorder=@@activeCaption
+inactiveCaptionText=@foreground
+inactiveCaptionBorder=@@inactiveCaption
+window=@background
+windowBorder=@foreground
+windowText=@foreground
+menu=@background
+menuText=@foreground
+text=@textComponentBackground
+textText=@foreground
+textHighlight=@selectionBackground
+textHighlightText=@selectionForeground
+textInactiveText=@disabledText
+control=@background
+controlText=@foreground
+scrollbar=@@ScrollBar.track
+info=@@ToolTip.background
+infoText=@foreground
+
+
 #---- Button ----
 
 Button.border=com.formdev.flatlaf.ui.FlatButtonBorder
@@ -70,15 +94,21 @@ Button.margin=2,14,2,14
 Button.iconTextGap=4
 Button.rollover=true
 Button.defaultButtonFollowsFocus=false
+[win]Button.defaultButtonFollowsFocus=true
 
 Button.default.borderWidth=1
 
 
+#---- Caret ----
+
+Caret.width={scaledInteger}1
+
+
 #---- CheckBox ----
 
 CheckBox.border=com.formdev.flatlaf.ui.FlatMarginBorder
 CheckBox.icon=com.formdev.flatlaf.icons.FlatCheckBoxIcon
-CheckBox.arc=2
+CheckBox.arc=4
 CheckBox.margin=2,2,2,2
 CheckBox.iconTextGap=4
 CheckBox.rollover=true
@@ -117,8 +147,8 @@ Component.hideMnemonics=true
 #---- EditorPane ----
 
 EditorPane.border=com.formdev.flatlaf.ui.FlatMarginBorder
-EditorPane.background=@textComponentBackground
 EditorPane.margin=@textComponentMargin
+EditorPane.background=@textComponentBackground
 
 
 #---- FileChooser ----
@@ -142,8 +172,9 @@ FileView.floppyDriveIcon=com.formdev.flatlaf.icons.FlatFileViewFloppyDriveIcon
 #---- FormattedTextField ----
 
 FormattedTextField.border=com.formdev.flatlaf.ui.FlatBorder
-FormattedTextField.background=@textComponentBackground
 FormattedTextField.margin=@textComponentMargin
+FormattedTextField.background=@textComponentBackground
+FormattedTextField.placeholderForeground=@disabledText
 
 
 #---- HelpButton ----
@@ -202,7 +233,7 @@ OptionPane.maxCharactersPerLine=80
 OptionPane.iconMessageGap=16
 OptionPane.messagePadding=3
 OptionPane.buttonPadding=8
-OptionPane.buttonMinimumWidth={scaledNumber}72
+OptionPane.buttonMinimumWidth={scaledInteger}72
 OptionPane.sameSizeButtons=true
 OptionPane.setButtonMargin=false
 OptionPane.buttonOrientation=4
@@ -217,8 +248,9 @@ OptionPane.warningIcon=com.formdev.flatlaf.icons.FlatOptionPaneWarningIcon
 #---- PasswordField ----
 
 PasswordField.border=com.formdev.flatlaf.ui.FlatBorder
-PasswordField.background=@textComponentBackground
 PasswordField.margin=@textComponentMargin
+PasswordField.background=@textComponentBackground
+PasswordField.placeholderForeground=@disabledText
 
 
 #---- PopupMenu ----
@@ -237,8 +269,9 @@ PopupMenuSeparator.stripeIndent=4
 #---- ProgressBar ----
 
 ProgressBar.border=com.formdev.flatlaf.ui.FlatEmptyBorder
-ProgressBar.horizontalSize=146,6
-ProgressBar.verticalSize=6,146
+ProgressBar.arc=4
+ProgressBar.horizontalSize=146,4
+ProgressBar.verticalSize=4,146
 
 
 #---- RadioButton ----
@@ -262,6 +295,10 @@ RadioButtonMenuItem.margin=2,2,2,2
 #---- ScrollBar ----
 
 ScrollBar.width=10
+ScrollBar.showButtons=false
+ScrollBar.squareButtons=false
+ScrollBar.buttonArrowColor=@@ComboBox.buttonArrowColor
+ScrollBar.buttonDisabledArrowColor=@@ComboBox.buttonDisabledArrowColor
 
 
 #---- ScrollPane ----
@@ -303,8 +340,8 @@ SplitPane.dividerSize={integer}5
 SplitPane.continuousLayout=true
 SplitPane.border=null
 SplitPane.centerOneTouchButtons=true
-SplitPane.oneTouchButtonSize={scaledNumber}6
-SplitPane.oneTouchButtonOffset={scaledNumber}2
+SplitPane.oneTouchButtonSize={scaledInteger}6
+SplitPane.oneTouchButtonOffset={scaledInteger}2
 
 SplitPaneDivider.border=null
 SplitPaneDivider.oneTouchArrowColor=@@ComboBox.buttonArrowColor
@@ -346,22 +383,23 @@ TableHeader.cellBorder=2,3,2,3
 #---- TextArea ----
 
 TextArea.border=com.formdev.flatlaf.ui.FlatMarginBorder
-TextArea.background=@textComponentBackground
 TextArea.margin=@textComponentMargin
+TextArea.background=@textComponentBackground
 
 
 #---- TextField ----
 
 TextField.border=com.formdev.flatlaf.ui.FlatBorder
-TextField.background=@textComponentBackground
 TextField.margin=@textComponentMargin
+TextField.background=@textComponentBackground
+TextField.placeholderForeground=@disabledText
 
 
 #---- TextPane ----
 
 TextPane.border=com.formdev.flatlaf.ui.FlatMarginBorder
-TextPane.background=@textComponentBackground
 TextPane.margin=@textComponentMargin
+TextPane.background=@textComponentBackground
 
 
 #---- TitledBorder ----
@@ -373,7 +411,6 @@ TitledBorder.border=1,1,1,1,@@Separator.foreground
 #---- ToggleButton ----
 
 ToggleButton.border=com.formdev.flatlaf.ui.FlatButtonBorder
-ToggleButton.arc=6
 ToggleButton.margin=2,14,2,14
 ToggleButton.iconTextGap=4
 ToggleButton.rollover=true

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

@@ -54,14 +54,14 @@
 *.acceleratorSelectionForeground=@selectionForeground
 
 
-#---- system ----
+#---- system colors ----
 
-control=#e0e0e0
-controlText=@foreground
-infoText=@foreground
-text=@foreground
-textText=@foreground
-window=@background
+activeCaption=#99b4d1
+inactiveCaption=#bfcddb
+controlHighlight=#e3e3e3
+controlLtHighlight=#fff
+controlShadow=#a0a0a0
+controlDkShadow=#696969
 
 
 #---- Button ----

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

@@ -19,5 +19,7 @@
 Button.hoverBorderColor=null
 Button.default.hoverBorderColor=null
 
-Button.default.hoverBackground=@buttonHoverBackground
-Button.default.pressedBackground=@buttonPressedBackground
+
+#---- HelpButton ----
+
+HelpButton.hoverBorderColor=null

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

@@ -62,21 +62,25 @@ class BasicComponentsPanel
 		JLabel spinnerLabel = new JLabel();
 		JSpinner spinner1 = new JSpinner();
 		JSpinner spinner2 = new JSpinner();
+		JComboBox<String> comboBox6 = new JComboBox<>();
 		JLabel textFieldLabel = new JLabel();
 		JTextField textField1 = new JTextField();
 		JTextField textField2 = new JTextField();
 		JTextField textField3 = new JTextField();
 		JTextField textField4 = new JTextField();
+		JTextField textField6 = new JTextField();
 		JLabel formattedTextFieldLabel = new JLabel();
 		JFormattedTextField formattedTextField1 = new JFormattedTextField();
 		JFormattedTextField formattedTextField2 = new JFormattedTextField();
 		JFormattedTextField formattedTextField3 = new JFormattedTextField();
 		JFormattedTextField formattedTextField4 = new JFormattedTextField();
+		JFormattedTextField formattedTextField5 = new JFormattedTextField();
 		JLabel passwordFieldLabel = new JLabel();
 		JPasswordField passwordField1 = new JPasswordField();
 		JPasswordField passwordField2 = new JPasswordField();
 		JPasswordField passwordField3 = new JPasswordField();
 		JPasswordField passwordField4 = new JPasswordField();
+		JPasswordField passwordField5 = new JPasswordField();
 		JLabel textAreaLabel = new JLabel();
 		JScrollPane scrollPane1 = new JScrollPane();
 		JTextArea textArea1 = new JTextArea();
@@ -304,6 +308,11 @@ class BasicComponentsPanel
 		spinner2.setEnabled(false);
 		add(spinner2, "cell 2 5,growx");
 
+		//---- comboBox6 ----
+		comboBox6.setEditable(true);
+		comboBox6.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(comboBox6, "cell 5 5,growx");
+
 		//---- textFieldLabel ----
 		textFieldLabel.setText("JTextField:");
 		add(textFieldLabel, "cell 0 6");
@@ -328,6 +337,10 @@ class BasicComponentsPanel
 		textField4.setEditable(false);
 		add(textField4, "cell 4 6,growx");
 
+		//---- textField6 ----
+		textField6.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(textField6, "cell 5 6,growx");
+
 		//---- formattedTextFieldLabel ----
 		formattedTextFieldLabel.setText("JFormattedTextField:");
 		add(formattedTextFieldLabel, "cell 0 7");
@@ -352,6 +365,10 @@ class BasicComponentsPanel
 		formattedTextField4.setEditable(false);
 		add(formattedTextField4, "cell 4 7,growx");
 
+		//---- formattedTextField5 ----
+		formattedTextField5.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(formattedTextField5, "cell 5 7,growx");
+
 		//---- passwordFieldLabel ----
 		passwordFieldLabel.setText("JPasswordField:");
 		add(passwordFieldLabel, "cell 0 8");
@@ -376,6 +393,10 @@ class BasicComponentsPanel
 		passwordField4.setEditable(false);
 		add(passwordField4, "cell 4 8,growx");
 
+		//---- passwordField5 ----
+		passwordField5.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(passwordField5, "cell 5 8,growx");
+
 		//---- textAreaLabel ----
 		textAreaLabel.setText("JTextArea:");
 		add(textAreaLabel, "cell 0 9");

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

@@ -253,6 +253,16 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 2 5,growx"
 			} )
+			add( new FormComponent( "javax.swing.JComboBox" ) {
+				name: "comboBox6"
+				"editable": true
+				"$client.JTextField.placeholderText": "placeholder"
+				auxiliary() {
+					"JavaCodeGenerator.typeParameters": "String"
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 5,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textFieldLabel"
 				"text": "JTextField:"
@@ -287,6 +297,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 6,growx"
 			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "textField6"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 6,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "formattedTextFieldLabel"
 				"text": "JFormattedTextField:"
@@ -321,6 +337,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 7,growx"
 			} )
+			add( new FormComponent( "javax.swing.JFormattedTextField" ) {
+				name: "formattedTextField5"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 7,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "passwordFieldLabel"
 				"text": "JPasswordField:"
@@ -355,6 +377,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 8,growx"
 			} )
+			add( new FormComponent( "javax.swing.JPasswordField" ) {
+				name: "passwordField5"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 8,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textAreaLabel"
 				"text": "JTextArea:"

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

@@ -77,6 +77,9 @@ class ControlBar
 				EventQueue.invokeLater( () -> {
 					// update info label because user scale factor may change
 					updateInfoLabel();
+
+					// this is necessary because embedded JOptionPane's "steal" the default button
+					frame.getRootPane().setDefaultButton( closeButton );
 				} );
 			}
 		} );
@@ -164,8 +167,6 @@ class ControlBar
 		if( lafClassName.equals( UIManager.getLookAndFeel().getClass().getName() ) )
 			return;
 
-		FlatLafDemo.prefs.put( FlatLafDemo.KEY_LAF, lafClassName );
-
 		EventQueue.invokeLater( () -> {
 			try {
 				// change look and feel

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

@@ -30,7 +30,7 @@ class DemoFrame
 	extends JFrame
 {
 	DemoFrame() {
-		int tabIndex = FlatLafDemo.prefs.getInt( FlatLafDemo.KEY_TAB, 0 );
+		int tabIndex = DemoPrefs.getState().getInt( FlatLafDemo.KEY_TAB, 0 );
 
 		initComponents();
 		controlBar.initialize( this, tabbedPane );
@@ -48,7 +48,7 @@ class DemoFrame
 	}
 
 	private void selectedTabChanged() {
-		FlatLafDemo.prefs.putInt( FlatLafDemo.KEY_TAB, tabbedPane.getSelectedIndex() );
+		DemoPrefs.getState().putInt( FlatLafDemo.KEY_TAB, tabbedPane.getSelectedIndex() );
 	}
 
 	private void initComponents() {

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

@@ -0,0 +1,84 @@
+/*
+ * 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.demo;
+
+import java.io.FileInputStream;
+import java.util.prefs.Preferences;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.FlatLightLaf;
+import com.formdev.flatlaf.IntelliJTheme;
+import com.formdev.flatlaf.demo.intellijthemes.IJThemesPanel;
+
+/**
+ * @author Karl Tauber
+ */
+public class DemoPrefs
+{
+	public static final String KEY_LAF = "laf";
+	public static final String KEY_LAF_INTELLIJ_THEME = "lafIntelliJTheme";
+
+	public static final String RESOURCE_PREFIX = "res:";
+	public static final String FILE_PREFIX = "file:";
+
+	public static final String INTELLIJ_THEME_UI_KEY = "__FlatLaf.demo.intelliJTheme";
+
+	private static Preferences state;
+
+	public static Preferences getState() {
+		return state;
+	}
+
+	public static void init( String rootPath ) {
+		state = Preferences.userRoot().node( rootPath );
+	}
+
+	public static void initLaf( String[] args ) {
+		// set look and feel
+		try {
+			if( args.length > 0 )
+				UIManager.setLookAndFeel( args[0] );
+			else {
+				String lafClassName = state.get( KEY_LAF, FlatLightLaf.class.getName() );
+				if( IntelliJTheme.ThemeLaf.class.getName().equals( lafClassName ) ) {
+					String intelliJTheme = state.get( KEY_LAF_INTELLIJ_THEME, "" );
+					if( intelliJTheme.startsWith( RESOURCE_PREFIX ) )
+						IntelliJTheme.install( IJThemesPanel.class.getResourceAsStream( intelliJTheme.substring( RESOURCE_PREFIX.length() ) ) );
+					else if( intelliJTheme.startsWith( FILE_PREFIX ) )
+					    FlatLaf.install( IntelliJTheme.createLaf( new FileInputStream( intelliJTheme.substring( FILE_PREFIX.length() ) ) ) );
+					else
+						FlatLightLaf.install();
+
+					if( !intelliJTheme.isEmpty() )
+						UIManager.getLookAndFeelDefaults().put( INTELLIJ_THEME_UI_KEY, intelliJTheme );
+				} else
+					UIManager.setLookAndFeel( lafClassName );
+			}
+		} catch( Exception ex ) {
+			ex.printStackTrace();
+
+			// fallback
+			FlatLightLaf.install();
+		}
+
+		// remember active look and feel
+		UIManager.addPropertyChangeListener( e -> {
+			if( "lookAndFeel".equals( e.getPropertyName() ) )
+				state.put( KEY_LAF, UIManager.getLookAndFeel().getClass().getName() );
+		} );
+	}
+}

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

@@ -16,10 +16,7 @@
 
 package com.formdev.flatlaf.demo;
 
-import java.util.prefs.Preferences;
 import javax.swing.SwingUtilities;
-import javax.swing.UIManager;
-import com.formdev.flatlaf.FlatLightLaf;
 
 /**
  * @author Karl Tauber
@@ -27,29 +24,14 @@ import com.formdev.flatlaf.FlatLightLaf;
 public class FlatLafDemo
 {
 	static final String PREFS_ROOT_PATH = "/flatlaf-demo";
-	static final String KEY_LAF = "laf";
 	static final String KEY_TAB = "tab";
 
-	static Preferences prefs;
-
 	public static void main( String[] args ) {
 		SwingUtilities.invokeLater( () -> {
-			prefs = Preferences.userRoot().node( PREFS_ROOT_PATH );
+			DemoPrefs.init( PREFS_ROOT_PATH );
 
 			// set look and feel
-			try {
-				if( args.length > 0 )
-					UIManager.setLookAndFeel( args[0] );
-				else {
-					String lafClassName = prefs.get( KEY_LAF, FlatLightLaf.class.getName() );
-					UIManager.setLookAndFeel( lafClassName );
-				}
-			} catch( Exception ex ) {
-				ex.printStackTrace();
-
-				// fallback
-				FlatLightLaf.install();
-			}
+			DemoPrefs.initLaf( args );
 
 			// create frame
 			DemoFrame frame = new DemoFrame();

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

@@ -31,6 +31,14 @@ class MoreComponentsPanel
 		initComponents();
 	}
 
+	private void changeProgress() {
+		int value = slider3.getValue();
+		progressBar1.setValue( value );
+		progressBar2.setValue( value );
+		progressBar3.setValue( value );
+		progressBar4.setValue( value );
+	}
+
 	private void indeterminateCheckBoxActionPerformed() {
 		boolean indeterminate = indeterminateCheckBox.isSelected();
 		progressBar1.setIndeterminate( indeterminate );
@@ -46,6 +54,8 @@ class MoreComponentsPanel
 		JPanel panel1 = new JPanel();
 		JScrollBar scrollBar2 = new JScrollBar();
 		JScrollBar scrollBar3 = new JScrollBar();
+		JScrollBar scrollBar7 = new JScrollBar();
+		JScrollBar scrollBar8 = new JScrollBar();
 		JSeparator separator2 = new JSeparator();
 		JSlider slider2 = new JSlider();
 		JSlider slider4 = new JSlider();
@@ -60,13 +70,15 @@ class MoreComponentsPanel
 		JLabel scrollBarLabel = new JLabel();
 		JScrollBar scrollBar1 = new JScrollBar();
 		JScrollBar scrollBar4 = new JScrollBar();
+		JScrollBar scrollBar5 = new JScrollBar();
+		JScrollBar scrollBar6 = new JScrollBar();
 		JLabel separatorLabel = new JLabel();
 		JSeparator separator1 = new JSeparator();
 		JPanel panel2 = new JPanel();
 		JLabel sliderLabel = new JLabel();
 		JSlider slider1 = new JSlider();
 		JSlider slider6 = new JSlider();
-		JSlider slider3 = new JSlider();
+		slider3 = new JSlider();
 		JSlider slider5 = new JSlider();
 		JLabel progressBarLabel = new JLabel();
 		progressBar1 = new JProgressBar();
@@ -102,6 +114,8 @@ class MoreComponentsPanel
 			"[]" +
 			"[]" +
 			"[]" +
+			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- scrollPaneLabel ----
@@ -121,20 +135,29 @@ class MoreComponentsPanel
 			scrollPane13.setViewportView(panel1);
 		}
 		add(scrollPane13, "cell 1 0,grow,width 70,height 70");
-		add(scrollBar2, "cell 2 0 1 4,growy");
+		add(scrollBar2, "cell 2 0 1 6,growy");
 
 		//---- scrollBar3 ----
 		scrollBar3.setEnabled(false);
-		add(scrollBar3, "cell 2 0 1 4,growy");
+		add(scrollBar3, "cell 2 0 1 6,growy");
+
+		//---- scrollBar7 ----
+		scrollBar7.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar7, "cell 2 0 1 6,growy");
+
+		//---- scrollBar8 ----
+		scrollBar8.setEnabled(false);
+		scrollBar8.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar8, "cell 2 0 1 6,growy");
 
 		//---- separator2 ----
 		separator2.setOrientation(SwingConstants.VERTICAL);
-		add(separator2, "cell 2 0 1 4,growy");
+		add(separator2, "cell 2 0 1 6,growy");
 
 		//---- slider2 ----
 		slider2.setOrientation(SwingConstants.VERTICAL);
 		slider2.setValue(30);
-		add(slider2, "cell 2 0 1 4,growy");
+		add(slider2, "cell 2 0 1 6,growy");
 
 		//---- slider4 ----
 		slider4.setMinorTickSpacing(10);
@@ -143,19 +166,19 @@ class MoreComponentsPanel
 		slider4.setPaintLabels(true);
 		slider4.setOrientation(SwingConstants.VERTICAL);
 		slider4.setValue(30);
-		add(slider4, "cell 2 0 1 4,growy");
+		add(slider4, "cell 2 0 1 6,growy");
 		add(scrollPane14, "cell 3 0,grow");
 
 		//---- progressBar3 ----
 		progressBar3.setOrientation(SwingConstants.VERTICAL);
-		progressBar3.setValue(50);
-		add(progressBar3, "cell 4 0 1 4,growy");
+		progressBar3.setValue(60);
+		add(progressBar3, "cell 4 0 1 6,growy");
 
 		//---- progressBar4 ----
 		progressBar4.setOrientation(SwingConstants.VERTICAL);
-		progressBar4.setValue(55);
+		progressBar4.setValue(60);
 		progressBar4.setStringPainted(true);
-		add(progressBar4, "cell 4 0 1 4,growy");
+		add(progressBar4, "cell 4 0 1 6,growy");
 
 		//======== toolBar2 ========
 		{
@@ -178,7 +201,7 @@ class MoreComponentsPanel
 			toggleButton7.setIcon(UIManager.getIcon("Tree.closedIcon"));
 			toolBar2.add(toggleButton7);
 		}
-		add(toolBar2, "cell 4 0 1 4,growy");
+		add(toolBar2, "cell 4 0 1 6,growy");
 
 		//---- scrollBarLabel ----
 		scrollBarLabel.setText("JScrollBar:");
@@ -193,30 +216,41 @@ class MoreComponentsPanel
 		scrollBar4.setEnabled(false);
 		add(scrollBar4, "cell 1 2,growx");
 
+		//---- scrollBar5 ----
+		scrollBar5.setOrientation(Adjustable.HORIZONTAL);
+		scrollBar5.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar5, "cell 1 3,growx");
+
+		//---- scrollBar6 ----
+		scrollBar6.setOrientation(Adjustable.HORIZONTAL);
+		scrollBar6.setEnabled(false);
+		scrollBar6.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar6, "cell 1 4,growx");
+
 		//---- separatorLabel ----
 		separatorLabel.setText("JSeparator:");
-		add(separatorLabel, "cell 0 3");
-		add(separator1, "cell 1 3,growx");
+		add(separatorLabel, "cell 0 5");
+		add(separator1, "cell 1 5,growx");
 
 		//======== panel2 ========
 		{
 			panel2.setBorder(new TitledBorder("TitledBorder"));
 			panel2.setLayout(new FlowLayout());
 		}
-		add(panel2, "cell 3 3,grow");
+		add(panel2, "cell 3 5,grow");
 
 		//---- sliderLabel ----
 		sliderLabel.setText("JSlider:");
-		add(sliderLabel, "cell 0 4");
+		add(sliderLabel, "cell 0 6");
 
 		//---- slider1 ----
 		slider1.setValue(30);
-		add(slider1, "cell 1 4 3 1,aligny top,grow 100 0");
+		add(slider1, "cell 1 6 3 1,aligny top,grow 100 0");
 
 		//---- slider6 ----
 		slider6.setEnabled(false);
 		slider6.setValue(30);
-		add(slider6, "cell 1 4 3 1,aligny top,growy 0");
+		add(slider6, "cell 1 6 3 1,aligny top,growy 0");
 
 		//---- slider3 ----
 		slider3.setMinorTickSpacing(10);
@@ -224,7 +258,8 @@ class MoreComponentsPanel
 		slider3.setMajorTickSpacing(50);
 		slider3.setPaintLabels(true);
 		slider3.setValue(30);
-		add(slider3, "cell 1 5 3 1,aligny top,grow 100 0");
+		slider3.addChangeListener(e -> changeProgress());
+		add(slider3, "cell 1 7 3 1,aligny top,grow 100 0");
 
 		//---- slider5 ----
 		slider5.setMinorTickSpacing(10);
@@ -233,41 +268,41 @@ class MoreComponentsPanel
 		slider5.setPaintLabels(true);
 		slider5.setEnabled(false);
 		slider5.setValue(30);
-		add(slider5, "cell 1 5 3 1,aligny top,growy 0");
+		add(slider5, "cell 1 7 3 1,aligny top,growy 0");
 
 		//---- progressBarLabel ----
 		progressBarLabel.setText("JProgressBar:");
-		add(progressBarLabel, "cell 0 6");
+		add(progressBarLabel, "cell 0 8");
 
 		//---- progressBar1 ----
-		progressBar1.setValue(50);
-		add(progressBar1, "cell 1 6 3 1,growx");
+		progressBar1.setValue(60);
+		add(progressBar1, "cell 1 8 3 1,growx");
 
 		//---- progressBar2 ----
 		progressBar2.setStringPainted(true);
-		progressBar2.setValue(55);
-		add(progressBar2, "cell 1 6 3 1,growx");
+		progressBar2.setValue(60);
+		add(progressBar2, "cell 1 8 3 1,growx");
 
 		//---- indeterminateCheckBox ----
 		indeterminateCheckBox.setText("indeterminate");
 		indeterminateCheckBox.addActionListener(e -> indeterminateCheckBoxActionPerformed());
-		add(indeterminateCheckBox, "cell 4 6");
+		add(indeterminateCheckBox, "cell 4 8");
 
 		//---- toolTipLabel ----
 		toolTipLabel.setText("JToolTip:");
-		add(toolTipLabel, "cell 0 7");
+		add(toolTipLabel, "cell 0 9");
 
 		//---- toolTip1 ----
 		toolTip1.setTipText("Some text in tool tip.");
-		add(toolTip1, "cell 1 7 3 1");
+		add(toolTip1, "cell 1 9 3 1");
 
 		//---- toolTip2 ----
 		toolTip2.setTipText("Tool tip with\nmultiple\nlines.");
-		add(toolTip2, "cell 1 7 3 1");
+		add(toolTip2, "cell 1 9 3 1");
 
 		//---- toolBarLabel ----
 		toolBarLabel.setText("JToolBar:");
-		add(toolBarLabel, "cell 0 8");
+		add(toolBarLabel, "cell 0 10");
 
 		//======== toolBar1 ========
 		{
@@ -297,13 +332,14 @@ class MoreComponentsPanel
 			toggleButton6.setSelected(true);
 			toolBar1.add(toggleButton6);
 		}
-		add(toolBar1, "cell 1 8 3 1,growx");
+		add(toolBar1, "cell 1 10 3 1,growx");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 	}
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JProgressBar progressBar3;
 	private JProgressBar progressBar4;
+	private JSlider slider3;
 	private JProgressBar progressBar1;
 	private JProgressBar progressBar2;
 	private JCheckBox indeterminateCheckBox;

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

@@ -9,7 +9,7 @@ new FormModel {
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "hidemode 3"
 			"$columnConstraints": "[][][][][][]"
-			"$rowConstraints": "[][][][][][][][][]"
+			"$rowConstraints": "[][][][][][][][][][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -32,26 +32,39 @@ new FormModel {
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar2"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 4,growy"
+				"value": "cell 2 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar3"
 				"enabled": false
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 4,growy"
+				"value": "cell 2 0 1 6,growy"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar7"
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 0 1 6,growy"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar8"
+				"enabled": false
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSeparator" ) {
 				name: "separator2"
 				"orientation": 1
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 4,growy"
+				"value": "cell 2 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider2"
 				"orientation": 1
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 4,growy"
+				"value": "cell 2 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider4"
@@ -62,7 +75,7 @@ new FormModel {
 				"orientation": 1
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 4,growy"
+				"value": "cell 2 0 1 6,growy"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane14"
@@ -72,23 +85,23 @@ new FormModel {
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar3"
 				"orientation": 1
-				"value": 50
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 0 1 4,growy"
+				"value": "cell 4 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar4"
 				"orientation": 1
-				"value": 55
+				"value": 60
 				"stringPainted": true
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 0 1 4,growy"
+				"value": "cell 4 0 1 6,growy"
 			} )
 			add( new FormContainer( "javax.swing.JToolBar", new FormLayoutManager( class javax.swing.JToolBar ) ) {
 				name: "toolBar2"
@@ -113,7 +126,7 @@ new FormModel {
 					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 0 1 4,growy"
+				"value": "cell 4 0 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "scrollBarLabel"
@@ -134,41 +147,56 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 2,growx"
 			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar5"
+				"orientation": 0
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 3,growx"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar6"
+				"orientation": 0
+				"enabled": false
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 4,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "separatorLabel"
 				"text": "JSeparator:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3"
+				"value": "cell 0 5"
 			} )
 			add( new FormComponent( "javax.swing.JSeparator" ) {
 				name: "separator1"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 3,growx"
+				"value": "cell 1 5,growx"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class java.awt.FlowLayout ) ) {
 				name: "panel2"
 				"border": new javax.swing.border.TitledBorder( "TitledBorder" )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 3 3,grow"
+				"value": "cell 3 5,grow"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "sliderLabel"
 				"text": "JSlider:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4"
+				"value": "cell 0 6"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider1"
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 4 3 1,aligny top,grow 100 0"
+				"value": "cell 1 6 3 1,aligny top,grow 100 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider6"
 				"enabled": false
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 4 3 1,aligny top,growy 0"
+				"value": "cell 1 6 3 1,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider3"
@@ -177,8 +205,12 @@ new FormModel {
 				"majorTickSpacing": 50
 				"paintLabels": true
 				"value": 30
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "javax.swing.event.ChangeListener", "stateChanged", "changeProgress", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 5 3 1,aligny top,grow 100 0"
+				"value": "cell 1 7 3 1,aligny top,grow 100 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider5"
@@ -189,32 +221,32 @@ new FormModel {
 				"enabled": false
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 5 3 1,aligny top,growy 0"
+				"value": "cell 1 7 3 1,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "progressBarLabel"
 				"text": "JProgressBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 6"
+				"value": "cell 0 8"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar1"
-				"value": 50
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 6 3 1,growx"
+				"value": "cell 1 8 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar2"
 				"stringPainted": true
-				"value": 55
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 6 3 1,growx"
+				"value": "cell 1 8 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "indeterminateCheckBox"
@@ -224,31 +256,31 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "indeterminateCheckBoxActionPerformed", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 6"
+				"value": "cell 4 8"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toolTipLabel"
 				"text": "JToolTip:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 7"
+				"value": "cell 0 9"
 			} )
 			add( new FormComponent( "javax.swing.JToolTip" ) {
 				name: "toolTip1"
 				"tipText": "Some text in tool tip."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 7 3 1"
+				"value": "cell 1 9 3 1"
 			} )
 			add( new FormComponent( "javax.swing.JToolTip" ) {
 				name: "toolTip2"
 				"tipText": "Tool tip with\nmultiple\nlines."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 7 3 1"
+				"value": "cell 1 9 3 1"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toolBarLabel"
 				"text": "JToolBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 8"
+				"value": "cell 0 10"
 			} )
 			add( new FormContainer( "javax.swing.JToolBar", new FormLayoutManager( class javax.swing.JToolBar ) ) {
 				name: "toolBar1"
@@ -282,7 +314,7 @@ new FormModel {
 					"selected": true
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 8 3 1,growx"
+				"value": "cell 1 10 3 1,growx"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )

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

@@ -5,6 +5,7 @@
 package com.formdev.flatlaf.demo;
 
 import static com.formdev.flatlaf.FlatClientProperties.TABBED_PANE_HAS_FULL_BORDER;
+import static com.formdev.flatlaf.FlatClientProperties.TABBED_PANE_SHOW_TAB_SEPARATORS;
 import java.awt.*;
 import javax.swing.*;
 import javax.swing.border.*;
@@ -29,6 +30,14 @@ class TabsPanel
 		tabbedPane4.setTabLayoutPolicy( tabLayoutPolicy );
 	}
 
+	private void showTabSeparatorsChanged() {
+		Boolean showTabSeparators = showTabSeparatorsCheckBox.isSelected() ? true : null;
+		tabbedPane1.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane2.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane3.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane4.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+	}
+
 	private void hasFullBorderChanged() {
 		Boolean hasFullBorder = hasFullBorderCheckBox.isSelected() ? true : null;
 		tabbedPane1.putClientProperty( TABBED_PANE_HAS_FULL_BORDER, hasFullBorder );
@@ -96,6 +105,7 @@ class TabsPanel
 		JPanel panel14 = new JPanel();
 		moreTabsCheckBox = new JCheckBox();
 		tabScrollCheckBox = new JCheckBox();
+		showTabSeparatorsCheckBox = new JCheckBox();
 		hasFullBorderCheckBox = new JCheckBox();
 		CellConstraints cc = new CellConstraints();
 
@@ -285,6 +295,7 @@ class TabsPanel
 					// columns
 					"[]" +
 					"[]" +
+					"[]" +
 					"[]",
 					// rows
 					"[center]"));
@@ -301,11 +312,16 @@ class TabsPanel
 				tabScrollCheckBox.addActionListener(e -> tabScrollChanged());
 				panel14.add(tabScrollCheckBox, "cell 1 0,alignx left,growx 0");
 
+				//---- showTabSeparatorsCheckBox ----
+				showTabSeparatorsCheckBox.setText("JTabbedPane.showTabSeparators");
+				showTabSeparatorsCheckBox.addActionListener(e -> showTabSeparatorsChanged());
+				panel14.add(showTabSeparatorsCheckBox, "cell 2 0");
+
 				//---- hasFullBorderCheckBox ----
 				hasFullBorderCheckBox.setText("JTabbedPane.hasFullBorder");
 				hasFullBorderCheckBox.setMnemonic('F');
 				hasFullBorderCheckBox.addActionListener(e -> hasFullBorderChanged());
-				panel14.add(hasFullBorderCheckBox, "cell 2 0,alignx left,growx 0");
+				panel14.add(hasFullBorderCheckBox, "cell 3 0,alignx left,growx 0");
 			}
 			panel9.add(panel14, cc.xywh(1, 11, 3, 1));
 		}
@@ -320,6 +336,7 @@ class TabsPanel
 	private JTabbedPane tabbedPane4;
 	private JCheckBox moreTabsCheckBox;
 	private JCheckBox tabScrollCheckBox;
+	private JCheckBox showTabSeparatorsCheckBox;
 	private JCheckBox hasFullBorderCheckBox;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 }

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

@@ -199,7 +199,7 @@ new FormModel {
 				} )
 				add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 					"$layoutConstraints": "insets 0,hidemode 3"
-					"$columnConstraints": "[][][]"
+					"$columnConstraints": "[][][][]"
 					"$rowConstraints": "[center]"
 				} ) {
 					name: "panel14"
@@ -225,6 +225,16 @@ new FormModel {
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 						"value": "cell 1 0,alignx left,growx 0"
 					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "showTabSeparatorsCheckBox"
+						"text": "JTabbedPane.showTabSeparators"
+						auxiliary() {
+							"JavaCodeGenerator.variableLocal": false
+						}
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showTabSeparatorsChanged", false ) )
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 2 0"
+					} )
 					add( new FormComponent( "javax.swing.JCheckBox" ) {
 						name: "hasFullBorderCheckBox"
 						"text": "JTabbedPane.hasFullBorder"
@@ -234,7 +244,7 @@ new FormModel {
 						}
 						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "hasFullBorderChanged", false ) )
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 2 0,alignx left,growx 0"
+						"value": "cell 3 0,alignx left,growx 0"
 					} )
 				}, new FormLayoutConstraints( class com.jgoodies.forms.layout.CellConstraints ) {
 					"gridY": 11
@@ -245,7 +255,7 @@ new FormModel {
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 500, 515 )
+			"size": new java.awt.Dimension( 610, 515 )
 		} )
 	}
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesPanel.java

@@ -37,6 +37,7 @@ import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Objects;
+import java.util.function.Predicate;
 import javax.swing.*;
 import javax.swing.border.CompoundBorder;
 import javax.swing.event.*;
@@ -46,6 +47,7 @@ import com.formdev.flatlaf.FlatIntelliJLaf;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatLightLaf;
 import com.formdev.flatlaf.IntelliJTheme;
+import com.formdev.flatlaf.demo.DemoPrefs;
 import com.formdev.flatlaf.extras.FlatSVGIcon;
 import com.formdev.flatlaf.util.StringUtils;
 import net.miginfocom.swing.*;
@@ -222,12 +224,15 @@ public class IJThemesPanel
 		} else if( themeInfo.themeFile != null ) {
 			try {
 			    FlatLaf.install( IntelliJTheme.createLaf( new FileInputStream( themeInfo.themeFile ) ) );
+			    DemoPrefs.getState().put( DemoPrefs.KEY_LAF_INTELLIJ_THEME, DemoPrefs.FILE_PREFIX + themeInfo.themeFile );
 			} catch( Exception ex ) {
 				ex.printStackTrace();
 				showInformationDialog( "Failed to load '" + themeInfo.themeFile + "'.", ex );
 			}
-		} else
+		} else {
 			IntelliJTheme.install( getClass().getResourceAsStream( themeInfo.resourceName ) );
+		    DemoPrefs.getState().put( DemoPrefs.KEY_LAF_INTELLIJ_THEME, DemoPrefs.RESOURCE_PREFIX + themeInfo.resourceName );
+		}
 
 		// update all components
 		FlatLaf.updateUI();
@@ -326,22 +331,36 @@ public class IJThemesPanel
 
 	private void selectedCurrentLookAndFeel() {
 		LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
+		String intelliJTheme = UIManager.getLookAndFeelDefaults().getString( DemoPrefs.INTELLIJ_THEME_UI_KEY );
+
+		if( intelliJTheme == null && lookAndFeel instanceof IntelliJTheme.ThemeLaf )
+			return;
+
+		Predicate<IJThemeInfo> test;
+		if( intelliJTheme != null && intelliJTheme.startsWith( DemoPrefs.RESOURCE_PREFIX ) ) {
+			String resourceName = intelliJTheme.substring( DemoPrefs.RESOURCE_PREFIX.length() );
+			test = ti -> Objects.equals( ti.resourceName, resourceName );
+		} else if( intelliJTheme != null && intelliJTheme.startsWith( DemoPrefs.FILE_PREFIX ) ) {
+			File themeFile = new File( intelliJTheme.substring( DemoPrefs.FILE_PREFIX.length() ) );
+			test = ti -> Objects.equals( ti.themeFile, themeFile );
+		} else {
+			String lafClassName = lookAndFeel.getClass().getName();
+			test = ti -> Objects.equals( ti.lafClassName, lafClassName );
+		}
 
 		int newSel = -1;
-		if( !(lookAndFeel instanceof IntelliJTheme.ThemeLaf) ) {
-			String lafClassName = lookAndFeel.getClass().getName();
-			for( int i = 0; i < themes.size(); i++ ) {
-				if( lafClassName.equals( themes.get( i ).lafClassName ) ) {
-					newSel = i;
-					break;
-				}
+		for( int i = 0; i < themes.size(); i++ ) {
+			if( test.test( themes.get( i ) ) ) {
+				newSel = i;
+				break;
 			}
-
-			if( newSel >= 0 )
-				themesList.setSelectedIndex( newSel );
-			else
-				themesList.clearSelection();
 		}
+
+		if( newSel >= 0 ) {
+			if( newSel != themesList.getSelectedIndex() )
+				themesList.setSelectedIndex( newSel );
+		} else
+			themesList.clearSelection();
 	}
 
 	private void initComponents() {

flatlaf-jide-oss/README.md

@@ -26,7 +26,7 @@ build script:
 
     groupId:     com.formdev
     artifactId:  flatlaf-jide-oss
-    version:     0.20
+    version:     0.22
 
 Otherwise download `flatlaf-jide-oss-<version>.jar` here:
 

flatlaf-jide-oss/src/main/java/com/formdev/flatlaf/jideoss/ui/FlatJideTabbedPaneUI.java

@@ -17,7 +17,7 @@
 package com.formdev.flatlaf.jideoss.ui;
 
 import static com.formdev.flatlaf.FlatClientProperties.TABBED_PANE_HAS_FULL_BORDER;
-import static com.formdev.flatlaf.FlatClientProperties.clientPropertyEquals;
+import static com.formdev.flatlaf.FlatClientProperties.clientPropertyBoolean;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Dimension;
@@ -181,7 +181,7 @@ public class FlatJideTabbedPaneUI
 	}
 
 	private Insets getContentBorderInsets0( int tabPlacement ) {
-		boolean hasFullBorder = this.hasFullBorder || clientPropertyEquals( _tabPane, TABBED_PANE_HAS_FULL_BORDER, true );
+		boolean hasFullBorder = clientPropertyBoolean( _tabPane, TABBED_PANE_HAS_FULL_BORDER, this.hasFullBorder );
 		int sh = scale( contentSeparatorHeight );
 		Insets insets = hasFullBorder ? new Insets( sh, sh, sh, sh ) : new Insets( sh, 0, 0, 0 );
 
@@ -339,7 +339,7 @@ public class FlatJideTabbedPaneUI
 		}
 
 		// compute insets for separator or full border
-		boolean hasFullBorder = this.hasFullBorder || clientPropertyEquals( _tabPane, TABBED_PANE_HAS_FULL_BORDER, true );
+		boolean hasFullBorder = clientPropertyBoolean( _tabPane, TABBED_PANE_HAS_FULL_BORDER, this.hasFullBorder );
 		int sh = scale( contentSeparatorHeight * 100 ); // multiply by 100 because rotateInsets() does not use floats
 		Insets ci = new Insets( 0, 0, 0, 0 );
 		rotateInsets( hasFullBorder ? new Insets( sh, sh, sh, sh ) : new Insets( sh, 0, 0, 0 ), ci, tabPlacement );

flatlaf-swingx/README.md

@@ -33,7 +33,7 @@ build script:
 
     groupId:     com.formdev
     artifactId:  flatlaf-swingx
-    version:     0.20
+    version:     0.22
 
 Otherwise download `flatlaf-swingx-<version>.jar` here:
 

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

@@ -237,7 +237,7 @@ public class FlatDatePickerUI
 
 		// paint background
 		g2.setColor( enabled ? c.getBackground() : disabledBackground );
-		FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 
 		// paint arrow button background
 		if( enabled ) {
@@ -247,7 +247,7 @@ public class FlatDatePickerUI
 				g2.clipRect( arrowX, 0, width - arrowX, height );
 			else
 				g2.clipRect( 0, 0, arrowX + arrowWidth, height );
-			FlatUIUtils.fillRoundRectangle( g2, 0, 0, width, height, focusWidth, arc );
+			FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
 			g2.setClip( oldClip );
 		}
 
@@ -255,7 +255,7 @@ public class FlatDatePickerUI
 		g2.setColor( enabled ? borderColor : disabledBorderColor );
 		float lw = scale( 1f );
 		float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
-		g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - (focusWidth * 2) ) );
+		g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2) ) );
 
 		paint( g, c );
 	}

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

@@ -38,7 +38,15 @@ public class FlatComponentsTest
 		initComponents();
 	}
 
-	private void indeterminateCheckBoxActionPerformed() {
+	private void changeProgress() {
+		int value = slider3.getValue();
+		progressBar1.setValue( value );
+		progressBar2.setValue( value );
+		progressBar3.setValue( value );
+		progressBar4.setValue( value );
+	}
+
+	private void indeterminateProgress() {
 		boolean indeterminate = indeterminateCheckBox.isSelected();
 		progressBar1.setIndeterminate( indeterminate );
 		progressBar2.setIndeterminate( indeterminate );
@@ -85,21 +93,25 @@ public class FlatComponentsTest
 		JLabel spinnerLabel = new JLabel();
 		JSpinner spinner1 = new JSpinner();
 		JSpinner spinner2 = new JSpinner();
+		JComboBox<String> comboBox7 = new JComboBox<>();
 		JLabel textFieldLabel = new JLabel();
 		JTextField textField1 = new JTextField();
 		JTextField textField2 = new JTextField();
 		JTextField textField3 = new JTextField();
 		JTextField textField4 = new JTextField();
+		JTextField textField6 = new JTextField();
 		JLabel formattedTextFieldLabel = new JLabel();
 		JFormattedTextField formattedTextField1 = new JFormattedTextField();
 		JFormattedTextField formattedTextField2 = new JFormattedTextField();
 		JFormattedTextField formattedTextField3 = new JFormattedTextField();
 		JFormattedTextField formattedTextField4 = new JFormattedTextField();
+		JFormattedTextField formattedTextField5 = new JFormattedTextField();
 		JLabel passwordFieldLabel = new JLabel();
 		JPasswordField passwordField1 = new JPasswordField();
 		JPasswordField passwordField2 = new JPasswordField();
 		JPasswordField passwordField3 = new JPasswordField();
 		JPasswordField passwordField4 = new JPasswordField();
+		JPasswordField passwordField5 = new JPasswordField();
 		JLabel textAreaLabel = new JLabel();
 		JScrollPane scrollPane1 = new JScrollPane();
 		JTextArea textArea1 = new JTextArea();
@@ -135,6 +147,8 @@ public class FlatComponentsTest
 		JPanel panel1 = new JPanel();
 		JScrollBar scrollBar2 = new JScrollBar();
 		JScrollBar scrollBar3 = new JScrollBar();
+		JScrollBar scrollBar7 = new JScrollBar();
+		JScrollBar scrollBar8 = new JScrollBar();
 		JSeparator separator2 = new JSeparator();
 		JSlider slider2 = new JSlider();
 		JSlider slider4 = new JSlider();
@@ -156,13 +170,15 @@ public class FlatComponentsTest
 		JEditorPane editorPane6 = new JEditorPane();
 		JScrollPane scrollPane16 = new JScrollPane();
 		JTextPane textPane6 = new JTextPane();
+		JScrollBar scrollBar5 = new JScrollBar();
+		JScrollBar scrollBar6 = new JScrollBar();
 		JLabel separatorLabel = new JLabel();
 		JSeparator separator1 = new JSeparator();
 		JPanel panel2 = new JPanel();
 		JLabel sliderLabel = new JLabel();
 		JSlider slider1 = new JSlider();
 		JSlider slider6 = new JSlider();
-		JSlider slider3 = new JSlider();
+		slider3 = new JSlider();
 		JSlider slider5 = new JSlider();
 		JLabel progressBarLabel = new JLabel();
 		progressBar1 = new JProgressBar();
@@ -211,6 +227,8 @@ public class FlatComponentsTest
 			"[]" +
 			"[]" +
 			"[]" +
+			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- labelLabel ----
@@ -433,6 +451,11 @@ public class FlatComponentsTest
 		spinner2.setEnabled(false);
 		add(spinner2, "cell 2 6,growx");
 
+		//---- comboBox7 ----
+		comboBox7.setEditable(true);
+		comboBox7.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(comboBox7, "cell 5 6,growx");
+
 		//---- textFieldLabel ----
 		textFieldLabel.setText("JTextField:");
 		add(textFieldLabel, "cell 0 7");
@@ -457,6 +480,10 @@ public class FlatComponentsTest
 		textField4.setEditable(false);
 		add(textField4, "cell 4 7,growx");
 
+		//---- textField6 ----
+		textField6.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(textField6, "cell 5 7,growx");
+
 		//---- formattedTextFieldLabel ----
 		formattedTextFieldLabel.setText("JFormattedTextField:");
 		add(formattedTextFieldLabel, "cell 0 8");
@@ -481,6 +508,10 @@ public class FlatComponentsTest
 		formattedTextField4.setEditable(false);
 		add(formattedTextField4, "cell 4 8,growx");
 
+		//---- formattedTextField5 ----
+		formattedTextField5.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(formattedTextField5, "cell 5 8,growx");
+
 		//---- passwordFieldLabel ----
 		passwordFieldLabel.setText("JPasswordField:");
 		add(passwordFieldLabel, "cell 0 9");
@@ -505,6 +536,10 @@ public class FlatComponentsTest
 		passwordField4.setEditable(false);
 		add(passwordField4, "cell 4 9,growx");
 
+		//---- passwordField5 ----
+		passwordField5.putClientProperty("JTextField.placeholderText", "placeholder");
+		add(passwordField5, "cell 5 9,growx");
+
 		//---- textAreaLabel ----
 		textAreaLabel.setText("JTextArea:");
 		add(textAreaLabel, "cell 0 10");
@@ -695,20 +730,29 @@ public class FlatComponentsTest
 			scrollPane13.setViewportView(panel1);
 		}
 		add(scrollPane13, "cell 1 13,grow,width 70,height 70");
-		add(scrollBar2, "cell 2 13 1 4,growy");
+		add(scrollBar2, "cell 2 13 1 6,growy");
 
 		//---- scrollBar3 ----
 		scrollBar3.setEnabled(false);
-		add(scrollBar3, "cell 2 13 1 4,growy");
+		add(scrollBar3, "cell 2 13 1 6,growy");
+
+		//---- scrollBar7 ----
+		scrollBar7.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar7, "cell 2 13 1 6,growy");
+
+		//---- scrollBar8 ----
+		scrollBar8.setEnabled(false);
+		scrollBar8.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar8, "cell 2 13 1 6,growy");
 
 		//---- separator2 ----
 		separator2.setOrientation(SwingConstants.VERTICAL);
-		add(separator2, "cell 2 13 1 4,growy");
+		add(separator2, "cell 2 13 1 6,growy");
 
 		//---- slider2 ----
 		slider2.setOrientation(SwingConstants.VERTICAL);
 		slider2.setValue(30);
-		add(slider2, "cell 2 13 1 4,growy");
+		add(slider2, "cell 2 13 1 6,growy");
 
 		//---- slider4 ----
 		slider4.setMinorTickSpacing(10);
@@ -717,19 +761,19 @@ public class FlatComponentsTest
 		slider4.setPaintLabels(true);
 		slider4.setOrientation(SwingConstants.VERTICAL);
 		slider4.setValue(30);
-		add(slider4, "cell 2 13 1 4,growy");
+		add(slider4, "cell 2 13 1 6,growy");
 		add(scrollPane14, "cell 3 13,grow");
 
 		//---- progressBar3 ----
 		progressBar3.setOrientation(SwingConstants.VERTICAL);
-		progressBar3.setValue(50);
-		add(progressBar3, "cell 4 13 1 4,growy");
+		progressBar3.setValue(60);
+		add(progressBar3, "cell 4 13 1 6,growy");
 
 		//---- progressBar4 ----
 		progressBar4.setOrientation(SwingConstants.VERTICAL);
-		progressBar4.setValue(55);
+		progressBar4.setValue(60);
 		progressBar4.setStringPainted(true);
-		add(progressBar4, "cell 4 13 1 4,growy");
+		add(progressBar4, "cell 4 13 1 6,growy");
 
 		//======== toolBar2 ========
 		{
@@ -752,7 +796,7 @@ public class FlatComponentsTest
 			toggleButton7.setIcon(UIManager.getIcon("Tree.closedIcon"));
 			toolBar2.add(toggleButton7);
 		}
-		add(toolBar2, "cell 4 13 1 4,growy");
+		add(toolBar2, "cell 4 13 1 6,growy");
 
 		//---- scrollBarLabel ----
 		scrollBarLabel.setText("JScrollBar:");
@@ -807,12 +851,23 @@ public class FlatComponentsTest
 			}
 			panel3.add(scrollPane16, "cell 0 2,grow");
 		}
-		add(panel3, "cell 5 15 1 7,aligny top,grow 100 0");
+		add(panel3, "cell 5 15 1 9,aligny top,grow 100 0");
+
+		//---- scrollBar5 ----
+		scrollBar5.setOrientation(Adjustable.HORIZONTAL);
+		scrollBar5.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar5, "cell 1 16,growx");
+
+		//---- scrollBar6 ----
+		scrollBar6.setOrientation(Adjustable.HORIZONTAL);
+		scrollBar6.setEnabled(false);
+		scrollBar6.putClientProperty("JScrollBar.showButtons", true);
+		add(scrollBar6, "cell 1 17,growx");
 
 		//---- separatorLabel ----
 		separatorLabel.setText("JSeparator:");
-		add(separatorLabel, "cell 0 16");
-		add(separator1, "cell 1 16,growx");
+		add(separatorLabel, "cell 0 18");
+		add(separator1, "cell 1 18,growx");
 
 		//======== panel2 ========
 		{
@@ -820,20 +875,20 @@ public class FlatComponentsTest
 			panel2.setOpaque(false);
 			panel2.setLayout(new FlowLayout());
 		}
-		add(panel2, "cell 3 16,grow");
+		add(panel2, "cell 3 18,grow");
 
 		//---- sliderLabel ----
 		sliderLabel.setText("JSlider:");
-		add(sliderLabel, "cell 0 17");
+		add(sliderLabel, "cell 0 19");
 
 		//---- slider1 ----
 		slider1.setValue(30);
-		add(slider1, "cell 1 17 3 1,aligny top,grow 100 0");
+		add(slider1, "cell 1 19 3 1,aligny top,grow 100 0");
 
 		//---- slider6 ----
 		slider6.setEnabled(false);
 		slider6.setValue(30);
-		add(slider6, "cell 1 17 3 1,aligny top,growy 0");
+		add(slider6, "cell 1 19 3 1,aligny top,growy 0");
 
 		//---- slider3 ----
 		slider3.setMinorTickSpacing(10);
@@ -841,7 +896,8 @@ public class FlatComponentsTest
 		slider3.setMajorTickSpacing(50);
 		slider3.setPaintLabels(true);
 		slider3.setValue(30);
-		add(slider3, "cell 1 18 3 1,aligny top,grow 100 0");
+		slider3.addChangeListener(e -> changeProgress());
+		add(slider3, "cell 1 20 3 1,aligny top,grow 100 0");
 
 		//---- slider5 ----
 		slider5.setMinorTickSpacing(10);
@@ -850,41 +906,41 @@ public class FlatComponentsTest
 		slider5.setPaintLabels(true);
 		slider5.setEnabled(false);
 		slider5.setValue(30);
-		add(slider5, "cell 1 18 3 1,aligny top,growy 0");
+		add(slider5, "cell 1 20 3 1,aligny top,growy 0");
 
 		//---- progressBarLabel ----
 		progressBarLabel.setText("JProgressBar:");
-		add(progressBarLabel, "cell 0 19");
+		add(progressBarLabel, "cell 0 21");
 
 		//---- progressBar1 ----
-		progressBar1.setValue(50);
-		add(progressBar1, "cell 1 19 3 1,growx");
+		progressBar1.setValue(60);
+		add(progressBar1, "cell 1 21 3 1,growx");
 
 		//---- progressBar2 ----
 		progressBar2.setStringPainted(true);
-		progressBar2.setValue(55);
-		add(progressBar2, "cell 1 19 3 1,growx");
+		progressBar2.setValue(60);
+		add(progressBar2, "cell 1 21 3 1,growx");
 
 		//---- indeterminateCheckBox ----
 		indeterminateCheckBox.setText("indeterminate");
-		indeterminateCheckBox.addActionListener(e -> indeterminateCheckBoxActionPerformed());
-		add(indeterminateCheckBox, "cell 4 19");
+		indeterminateCheckBox.addActionListener(e -> indeterminateProgress());
+		add(indeterminateCheckBox, "cell 4 21");
 
 		//---- toolTipLabel ----
 		toolTipLabel.setText("JToolTip:");
-		add(toolTipLabel, "cell 0 20");
+		add(toolTipLabel, "cell 0 22");
 
 		//---- toolTip1 ----
 		toolTip1.setTipText("Some text in tool tip.");
-		add(toolTip1, "cell 1 20 3 1");
+		add(toolTip1, "cell 1 22 3 1");
 
 		//---- toolTip2 ----
 		toolTip2.setTipText("Tool tip with\nmultiple\nlines.");
-		add(toolTip2, "cell 1 20 3 1");
+		add(toolTip2, "cell 1 22 3 1");
 
 		//---- toolBarLabel ----
 		toolBarLabel.setText("JToolBar:");
-		add(toolBarLabel, "cell 0 21");
+		add(toolBarLabel, "cell 0 23");
 
 		//======== toolBar1 ========
 		{
@@ -914,7 +970,7 @@ public class FlatComponentsTest
 			toggleButton6.setSelected(true);
 			toolBar1.add(toggleButton6);
 		}
-		add(toolBar1, "cell 1 21 3 1,growx");
+		add(toolBar1, "cell 1 23 3 1,growx");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 
 //		BasicComboBoxRenderer customaRenderer = new BasicComboBoxRenderer();
@@ -926,6 +982,7 @@ public class FlatComponentsTest
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JProgressBar progressBar3;
 	private JProgressBar progressBar4;
+	private JSlider slider3;
 	private JProgressBar progressBar1;
 	private JProgressBar progressBar2;
 	private JCheckBox indeterminateCheckBox;

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

@@ -9,7 +9,7 @@ new FormModel {
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
 			"$columnConstraints": "[][][][][][]"
-			"$rowConstraints": "[][][][][][][][][][][][][][][][][][][][][][]"
+			"$rowConstraints": "[][][][][][][][][][][][][][][][][][][][][][][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -313,6 +313,16 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 2 6,growx"
 			} )
+			add( new FormComponent( "javax.swing.JComboBox" ) {
+				name: "comboBox7"
+				"editable": true
+				"$client.JTextField.placeholderText": "placeholder"
+				auxiliary() {
+					"JavaCodeGenerator.typeParameters": "String"
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 6,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textFieldLabel"
 				"text": "JTextField:"
@@ -347,6 +357,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 7,growx"
 			} )
+			add( new FormComponent( "javax.swing.JTextField" ) {
+				name: "textField6"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 7,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "formattedTextFieldLabel"
 				"text": "JFormattedTextField:"
@@ -381,6 +397,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 8,growx"
 			} )
+			add( new FormComponent( "javax.swing.JFormattedTextField" ) {
+				name: "formattedTextField5"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 8,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "passwordFieldLabel"
 				"text": "JPasswordField:"
@@ -415,6 +437,12 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 9,growx"
 			} )
+			add( new FormComponent( "javax.swing.JPasswordField" ) {
+				name: "passwordField5"
+				"$client.JTextField.placeholderText": "placeholder"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 9,growx"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textAreaLabel"
 				"text": "JTextArea:"
@@ -620,26 +648,39 @@ new FormModel {
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar2"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 13 1 4,growy"
+				"value": "cell 2 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar3"
 				"enabled": false
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 13 1 4,growy"
+				"value": "cell 2 13 1 6,growy"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar7"
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 13 1 6,growy"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar8"
+				"enabled": false
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 2 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSeparator" ) {
 				name: "separator2"
 				"orientation": 1
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 13 1 4,growy"
+				"value": "cell 2 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider2"
 				"orientation": 1
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 13 1 4,growy"
+				"value": "cell 2 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider4"
@@ -650,7 +691,7 @@ new FormModel {
 				"orientation": 1
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 13 1 4,growy"
+				"value": "cell 2 13 1 6,growy"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane14"
@@ -660,23 +701,23 @@ new FormModel {
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar3"
 				"orientation": 1
-				"value": 50
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 13 1 4,growy"
+				"value": "cell 4 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar4"
 				"orientation": 1
-				"value": 55
+				"value": 60
 				"stringPainted": true
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 13 1 4,growy"
+				"value": "cell 4 13 1 6,growy"
 			} )
 			add( new FormContainer( "javax.swing.JToolBar", new FormLayoutManager( class javax.swing.JToolBar ) ) {
 				name: "toolBar2"
@@ -701,7 +742,7 @@ new FormModel {
 					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 13 1 4,growy"
+				"value": "cell 4 13 1 6,growy"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "scrollBarLabel"
@@ -762,44 +803,59 @@ new FormModel {
 					"value": "cell 0 2,grow"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 5 15 1 7,aligny top,grow 100 0"
+				"value": "cell 5 15 1 9,aligny top,grow 100 0"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar5"
+				"orientation": 0
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 16,growx"
+			} )
+			add( new FormComponent( "javax.swing.JScrollBar" ) {
+				name: "scrollBar6"
+				"orientation": 0
+				"enabled": false
+				"$client.JScrollBar.showButtons": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 17,growx"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "separatorLabel"
 				"text": "JSeparator:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 16"
+				"value": "cell 0 18"
 			} )
 			add( new FormComponent( "javax.swing.JSeparator" ) {
 				name: "separator1"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 16,growx"
+				"value": "cell 1 18,growx"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class java.awt.FlowLayout ) ) {
 				name: "panel2"
 				"border": new javax.swing.border.TitledBorder( "TitledBorder" )
 				"opaque": false
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 3 16,grow"
+				"value": "cell 3 18,grow"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "sliderLabel"
 				"text": "JSlider:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 17"
+				"value": "cell 0 19"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider1"
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 17 3 1,aligny top,grow 100 0"
+				"value": "cell 1 19 3 1,aligny top,grow 100 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider6"
 				"enabled": false
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 17 3 1,aligny top,growy 0"
+				"value": "cell 1 19 3 1,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider3"
@@ -808,8 +864,12 @@ new FormModel {
 				"majorTickSpacing": 50
 				"paintLabels": true
 				"value": 30
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "javax.swing.event.ChangeListener", "stateChanged", "changeProgress", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 18 3 1,aligny top,grow 100 0"
+				"value": "cell 1 20 3 1,aligny top,grow 100 0"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider5"
@@ -820,32 +880,32 @@ new FormModel {
 				"enabled": false
 				"value": 30
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 18 3 1,aligny top,growy 0"
+				"value": "cell 1 20 3 1,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "progressBarLabel"
 				"text": "JProgressBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 19"
+				"value": "cell 0 21"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar1"
-				"value": 50
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 19 3 1,growx"
+				"value": "cell 1 21 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JProgressBar" ) {
 				name: "progressBar2"
 				"stringPainted": true
-				"value": 55
+				"value": 60
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 19 3 1,growx"
+				"value": "cell 1 21 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "indeterminateCheckBox"
@@ -853,33 +913,33 @@ new FormModel {
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "indeterminateCheckBoxActionPerformed", false ) )
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "indeterminateProgress", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 4 19"
+				"value": "cell 4 21"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toolTipLabel"
 				"text": "JToolTip:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 20"
+				"value": "cell 0 22"
 			} )
 			add( new FormComponent( "javax.swing.JToolTip" ) {
 				name: "toolTip1"
 				"tipText": "Some text in tool tip."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 20 3 1"
+				"value": "cell 1 22 3 1"
 			} )
 			add( new FormComponent( "javax.swing.JToolTip" ) {
 				name: "toolTip2"
 				"tipText": "Tool tip with\nmultiple\nlines."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 20 3 1"
+				"value": "cell 1 22 3 1"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toolBarLabel"
 				"text": "JToolBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 21"
+				"value": "cell 0 23"
 			} )
 			add( new FormContainer( "javax.swing.JToolBar", new FormLayoutManager( class javax.swing.JToolBar ) ) {
 				name: "toolBar1"
@@ -913,11 +973,11 @@ new FormModel {
 					"selected": true
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 21 3 1,growx"
+				"value": "cell 1 23 3 1,growx"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 790, 750 )
+			"size": new java.awt.Dimension( 865, 750 )
 		} )
 	}
 }

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

@@ -5,6 +5,7 @@
 package com.formdev.flatlaf.testing;
 
 import static com.formdev.flatlaf.FlatClientProperties.TABBED_PANE_HAS_FULL_BORDER;
+import static com.formdev.flatlaf.FlatClientProperties.TABBED_PANE_SHOW_TAB_SEPARATORS;
 import java.awt.*;
 import javax.swing.*;
 import javax.swing.border.*;
@@ -36,6 +37,14 @@ public class FlatContainerTest
 		tabbedPane4.setTabLayoutPolicy( tabLayoutPolicy );
 	}
 
+	private void showTabSeparatorsChanged() {
+		Boolean showTabSeparators = showTabSeparatorsCheckBox.isSelected() ? true : null;
+		tabbedPane1.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane2.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane3.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+		tabbedPane4.putClientProperty( TABBED_PANE_SHOW_TAB_SEPARATORS, showTabSeparators );
+	}
+
 	private void hasFullBorderChanged() {
 		Boolean hasFullBorder = hasFullBorderCheckBox.isSelected() ? true : null;
 		tabbedPane1.putClientProperty( TABBED_PANE_HAS_FULL_BORDER, hasFullBorder );
@@ -100,6 +109,7 @@ public class FlatContainerTest
 		JPanel panel14 = new JPanel();
 		moreTabsCheckBox = new JCheckBox();
 		tabScrollCheckBox = new JCheckBox();
+		showTabSeparatorsCheckBox = new JCheckBox();
 		hasFullBorderCheckBox = new JCheckBox();
 		CellConstraints cc = new CellConstraints();
 
@@ -291,6 +301,7 @@ public class FlatContainerTest
 					// columns
 					"[]" +
 					"[]" +
+					"[]" +
 					"[]",
 					// rows
 					"[center]"));
@@ -307,11 +318,16 @@ public class FlatContainerTest
 				tabScrollCheckBox.addActionListener(e -> tabScrollChanged());
 				panel14.add(tabScrollCheckBox, "cell 1 0,alignx left,growx 0");
 
+				//---- showTabSeparatorsCheckBox ----
+				showTabSeparatorsCheckBox.setText("JTabbedPane.showTabSeparators");
+				showTabSeparatorsCheckBox.addActionListener(e -> showTabSeparatorsChanged());
+				panel14.add(showTabSeparatorsCheckBox, "cell 2 0");
+
 				//---- hasFullBorderCheckBox ----
 				hasFullBorderCheckBox.setText("JTabbedPane.hasFullBorder");
 				hasFullBorderCheckBox.setMnemonic('F');
 				hasFullBorderCheckBox.addActionListener(e -> hasFullBorderChanged());
-				panel14.add(hasFullBorderCheckBox, "cell 2 0,alignx left,growx 0");
+				panel14.add(hasFullBorderCheckBox, "cell 3 0,alignx left,growx 0");
 			}
 			panel9.add(panel14, cc.xywh(1, 11, 3, 1));
 		}
@@ -326,6 +342,7 @@ public class FlatContainerTest
 	private JTabbedPane tabbedPane4;
 	private JCheckBox moreTabsCheckBox;
 	private JCheckBox tabScrollCheckBox;
+	private JCheckBox showTabSeparatorsCheckBox;
 	private JCheckBox hasFullBorderCheckBox;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 }

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

@@ -200,7 +200,7 @@ new FormModel {
 				} )
 				add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 					"$layoutConstraints": "insets 0,hidemode 3"
-					"$columnConstraints": "[][][]"
+					"$columnConstraints": "[][][][]"
 					"$rowConstraints": "[center]"
 				} ) {
 					name: "panel14"
@@ -227,6 +227,16 @@ new FormModel {
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 						"value": "cell 1 0,alignx left,growx 0"
 					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "showTabSeparatorsCheckBox"
+						"text": "JTabbedPane.showTabSeparators"
+						auxiliary() {
+							"JavaCodeGenerator.variableLocal": false
+						}
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showTabSeparatorsChanged", false ) )
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 2 0"
+					} )
 					add( new FormComponent( "javax.swing.JCheckBox" ) {
 						name: "hasFullBorderCheckBox"
 						"text": "JTabbedPane.hasFullBorder"
@@ -236,7 +246,7 @@ new FormModel {
 						}
 						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "hasFullBorderChanged", false ) )
 					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-						"value": "cell 2 0,alignx left,growx 0"
+						"value": "cell 3 0,alignx left,growx 0"
 					} )
 				}, new FormLayoutConstraints( class com.jgoodies.forms.layout.CellConstraints ) {
 					"gridY": 11
@@ -247,7 +257,7 @@ new FormModel {
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 500, 515 )
+			"size": new java.awt.Dimension( 625, 515 )
 		} )
 	}
 }

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

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf.testing;
 
+import java.awt.AWTEvent;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
@@ -25,9 +26,16 @@ import java.awt.Font;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.KeyboardFocusManager;
+import java.awt.Point;
 import java.awt.Rectangle;
+import java.awt.Toolkit;
+import java.awt.Window;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseMotionAdapter;
+import java.awt.event.MouseMotionListener;
 import java.lang.reflect.Field;
 import javax.swing.AbstractButton;
 import javax.swing.JComponent;
@@ -35,6 +43,8 @@ import javax.swing.JMenuBar;
 import javax.swing.JRootPane;
 import javax.swing.JToolBar;
 import javax.swing.JToolTip;
+import javax.swing.KeyStroke;
+import javax.swing.RootPaneContainer;
 import javax.swing.SwingUtilities;
 import javax.swing.border.Border;
 import javax.swing.border.EmptyBorder;
@@ -53,7 +63,10 @@ public class FlatInspector
 	private static final Integer HIGHLIGHT_LAYER = 401;
 	private static final Integer TOOLTIP_LAYER = 402;
 
+	private static final int KEY_MODIFIERS_MASK = InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK | InputEvent.ALT_DOWN_MASK | InputEvent.META_DOWN_MASK;
+
 	private final JRootPane rootPane;
+	private final MouseMotionListener mouseMotionListener;
 
 	private Component lastComponent;
 	private int lastX;
@@ -63,10 +76,38 @@ public class FlatInspector
 	private JComponent highlightFigure;
 	private JToolTip tip;
 
+	/**
+	 * Installs a key listener into the application that allows enabling and disabling
+	 * the UI inspector with the given keystroke (e.g. "ctrl shift alt X").
+	 */
+	public static void install( String activationKeys ) {
+		KeyStroke keyStroke = KeyStroke.getKeyStroke( activationKeys );
+		Toolkit.getDefaultToolkit().addAWTEventListener( e -> {
+			if( e.getID() == KeyEvent.KEY_RELEASED &&
+				((KeyEvent)e).getKeyCode() == keyStroke.getKeyCode() &&
+				(((KeyEvent)e).getModifiersEx() & KEY_MODIFIERS_MASK) == (keyStroke.getModifiers() & KEY_MODIFIERS_MASK)  )
+			{
+				Window activeWindow = KeyboardFocusManager.getCurrentKeyboardFocusManager().getActiveWindow();
+				if( activeWindow instanceof RootPaneContainer ) {
+					JRootPane rootPane = ((RootPaneContainer)activeWindow).getRootPane();
+					FlatInspector inspector = (FlatInspector) rootPane.getClientProperty( FlatInspector.class );
+					if( inspector == null ) {
+						inspector = new FlatInspector( rootPane );
+						rootPane.putClientProperty( FlatInspector.class, inspector );
+						inspector.setEnabled( true );
+					} else {
+						inspector.uninstall();
+						rootPane.putClientProperty( FlatInspector.class, null );
+					}
+				}
+			}
+		}, AWTEvent.KEY_EVENT_MASK );
+	}
+
 	public FlatInspector( JRootPane rootPane ) {
 		this.rootPane = rootPane;
 
-		rootPane.getGlassPane().addMouseMotionListener( new MouseMotionAdapter() {
+		mouseMotionListener = new MouseMotionAdapter() {
 			@Override
 			public void mouseMoved( MouseEvent e ) {
 				lastX = e.getX();
@@ -74,7 +115,15 @@ public class FlatInspector
 				inspectParent = e.isShiftDown();
 				inspect( lastX, lastY );
 			}
-		} );
+		};
+
+		rootPane.getGlassPane().addMouseMotionListener( mouseMotionListener );
+	}
+
+	private void uninstall() {
+		setEnabled( false );
+		rootPane.getGlassPane().setVisible( false );
+		rootPane.getGlassPane().removeMouseMotionListener( mouseMotionListener );
 	}
 
 	public void setEnabled( boolean enabled ) {
@@ -106,7 +155,8 @@ public class FlatInspector
 
 	private void inspect( int x, int y ) {
 		Container contentPane = rootPane.getContentPane();
-		Component c = SwingUtilities.getDeepestComponentAt( contentPane, x, y );
+		Point pt = SwingUtilities.convertPoint( rootPane.getGlassPane(), x, y, contentPane );
+		Component c = SwingUtilities.getDeepestComponentAt( contentPane, pt.x, pt.y );
 		if( inspectParent && c != null && c != contentPane )
 			c = c.getParent();
 		if( c == contentPane || (c != null && c.getParent() == contentPane) )
@@ -182,9 +232,9 @@ public class FlatInspector
 		// position the tip in the visible area
 		Rectangle visibleRect = rootPane.getVisibleRect();
 		if( tx + size.width > visibleRect.x + visibleRect.width )
-			tx = visibleRect.x + visibleRect.width - size.width;
+			tx -= size.width + UIScale.scale( 16 );
 		if( ty + size.height > visibleRect.y + visibleRect.height )
-			ty = visibleRect.y + visibleRect.height - size.height;
+			ty -= size.height + UIScale.scale( 32 );
 		if( tx < visibleRect.x )
 			tx = visibleRect.x;
 		if( ty < visibleRect.y )

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

@@ -0,0 +1,164 @@
+/*
+ * Created by JFormDesigner on Tue Aug 27 21:47:02 CEST 2019
+ */
+
+package com.formdev.flatlaf.testing;
+
+import java.awt.*;
+import java.beans.PropertyVetoException;
+import javax.swing.*;
+import com.formdev.flatlaf.util.UIScale;
+import net.miginfocom.swing.*;
+
+/**
+ * @author Karl Tauber
+ */
+public class FlatInternalFrameTest
+	extends FlatTestPanel
+{
+	private static final int GAP = 20;
+
+	private final int frameX;
+	private final int frameY;
+	private int frameCount = 0;
+
+	public static void main( String[] args ) {
+		SwingUtilities.invokeLater( () -> {
+			FlatTestFrame frame = FlatTestFrame.create( args, "FlatInternalFrameTest" );
+			frame.showFrame( FlatInternalFrameTest::new );
+		} );
+	}
+
+	public FlatInternalFrameTest() {
+		initComponents();
+
+		frameX = palette.getX() + palette.getWidth() + UIScale.scale( GAP );
+		frameY = UIScale.scale( GAP );
+
+		createInternalFrame();
+	}
+
+	private void createInternalFrame() {
+		String title = titleField.getText();
+		if( title.isEmpty() )
+			title = "Frame " + (frameCount + 1);
+
+		JInternalFrame internalFrame = new JInternalFrame( title,
+			resizableCheckBox.isSelected(),
+			closableCheckBox.isSelected(),
+			maximizableCheckBox.isSelected(),
+			iconifiableCheckBox.isSelected() );
+
+		JPanel panel = new JPanel();
+		panel.setBackground( new Color( (int) (Math.random() * 0xffffff) ) );
+		internalFrame.setContentPane( panel );
+
+		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 );
+
+		try {
+			internalFrame.setSelected( true );
+		} catch( PropertyVetoException ex ) {
+			// ignore
+		}
+
+		internalFrame.show();
+
+		frameCount++;
+	}
+
+	private void initComponents() {
+		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
+		desktopPane = new JDesktopPane();
+		palette = new JInternalFrame();
+		resizableCheckBox = new JCheckBox();
+		closableCheckBox = new JCheckBox();
+		iconifiableCheckBox = new JCheckBox();
+		maximizableCheckBox = new JCheckBox();
+		titleLabel = new JLabel();
+		titleField = new JTextField();
+		createFrameButton = new JButton();
+
+		//======== this ========
+		setLayout(new MigLayout(
+			"insets dialog,hidemode 3",
+			// columns
+			"[grow,fill]",
+			// rows
+			"[grow,fill]"));
+
+		//======== desktopPane ========
+		{
+
+			//======== palette ========
+			{
+				palette.setVisible(true);
+				palette.setTitle("Internal Frame Generator");
+				palette.setResizable(true);
+				palette.putClientProperty("JInternalFrame.isPalette", true);
+				palette.setIconifiable(true);
+				Container paletteContentPane = palette.getContentPane();
+				paletteContentPane.setLayout(new MigLayout(
+					"hidemode 3",
+					// columns
+					"[fill]" +
+					"[fill]",
+					// rows
+					"[fill]0" +
+					"[]0" +
+					"[]unrel" +
+					"[]unrel"));
+
+				//---- resizableCheckBox ----
+				resizableCheckBox.setText("Resizable");
+				resizableCheckBox.setSelected(true);
+				paletteContentPane.add(resizableCheckBox, "cell 0 0,alignx left,growx 0");
+
+				//---- closableCheckBox ----
+				closableCheckBox.setText("Closable");
+				closableCheckBox.setSelected(true);
+				paletteContentPane.add(closableCheckBox, "cell 1 0,alignx left,growx 0");
+
+				//---- iconifiableCheckBox ----
+				iconifiableCheckBox.setText("Iconifiable");
+				iconifiableCheckBox.setSelected(true);
+				paletteContentPane.add(iconifiableCheckBox, "cell 0 1,alignx left,growx 0");
+
+				//---- maximizableCheckBox ----
+				maximizableCheckBox.setText("Maximizable");
+				maximizableCheckBox.setSelected(true);
+				paletteContentPane.add(maximizableCheckBox, "cell 1 1,alignx left,growx 0");
+
+				//---- titleLabel ----
+				titleLabel.setText("Frame title:");
+				paletteContentPane.add(titleLabel, "cell 0 2");
+				paletteContentPane.add(titleField, "cell 1 2");
+
+				//---- createFrameButton ----
+				createFrameButton.setText("Create Frame");
+				createFrameButton.addActionListener(e -> createInternalFrame());
+				paletteContentPane.add(createFrameButton, "cell 1 3,alignx right,growx 0");
+			}
+			desktopPane.add(palette, JLayeredPane.PALETTE_LAYER);
+			palette.setBounds(15, 25, 220, 160);
+		}
+		add(desktopPane, "cell 0 0,width 600,height 600");
+		// JFormDesigner - End of component initialization  //GEN-END:initComponents
+
+		if( UIScale.getUserScaleFactor() > 1 )
+			palette.setSize( UIScale.scale( palette.getSize() ) );
+	}
+
+	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JDesktopPane desktopPane;
+	private JInternalFrame palette;
+	private JCheckBox resizableCheckBox;
+	private JCheckBox closableCheckBox;
+	private JCheckBox iconifiableCheckBox;
+	private JCheckBox maximizableCheckBox;
+	private JLabel titleLabel;
+	private JTextField titleField;
+	private JButton createFrameButton;
+	// JFormDesigner - End of variables declaration  //GEN-END:variables
+}

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

@@ -0,0 +1,86 @@
+JFDML JFormDesigner: "7.0.0.0.194" Java: "11.0.2" encoding: "UTF-8"
+
+new FormModel {
+	contentType: "form/swing"
+	root: new FormRoot {
+		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+			"$layoutConstraints": "insets dialog,hidemode 3"
+			"$columnConstraints": "[grow,fill]"
+			"$rowConstraints": "[grow,fill]"
+		} ) {
+			name: "this"
+			add( new FormContainer( "javax.swing.JDesktopPane", new FormLayoutManager( class javax.swing.JDesktopPane ) ) {
+				name: "desktopPane"
+				add( new FormContainer( "javax.swing.JInternalFrame", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+					"$layoutConstraints": "hidemode 3"
+					"$columnConstraints": "[fill][fill]"
+					"$rowConstraints": "[fill]0[]0[]unrel[]unrel"
+				} ) {
+					name: "palette"
+					"visible": true
+					"title": "Internal Frame Generator"
+					"resizable": true
+					"$client.JInternalFrame.isPalette": true
+					"iconifiable": true
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "resizableCheckBox"
+						"text": "Resizable"
+						"selected": true
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 0 0,alignx left,growx 0"
+					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "closableCheckBox"
+						"text": "Closable"
+						"selected": true
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 1 0,alignx left,growx 0"
+					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "iconifiableCheckBox"
+						"text": "Iconifiable"
+						"selected": true
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 0 1,alignx left,growx 0"
+					} )
+					add( new FormComponent( "javax.swing.JCheckBox" ) {
+						name: "maximizableCheckBox"
+						"text": "Maximizable"
+						"selected": true
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 1 1,alignx left,growx 0"
+					} )
+					add( new FormComponent( "javax.swing.JLabel" ) {
+						name: "titleLabel"
+						"text": "Frame title:"
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 0 2"
+					} )
+					add( new FormComponent( "javax.swing.JTextField" ) {
+						name: "titleField"
+					}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+						"value": "cell 1 2"
+					} )
+					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"
+					} )
+				}, new FormLayoutConstraints( null ) {
+					"x": 15
+					"y": 25
+					"width": 220
+					"height": 160
+					"layer": 100
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 0,width 600,height 600"
+			} )
+		}, new FormLayoutConstraints( null ) {
+			"location": new java.awt.Point( 0, 0 )
+			"size": new java.awt.Dimension( 500, 515 )
+		} )
+	}
+}

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

@@ -0,0 +1,142 @@
+/*
+ * 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.testing;
+
+import java.awt.Color;
+import javax.swing.*;
+import net.miginfocom.swing.*;
+
+/**
+ * @author Karl Tauber
+ */
+public class FlatSystemColorsTest
+	extends FlatTestPanel
+{
+	public static void main( String[] args ) {
+		SwingUtilities.invokeLater( () -> {
+			FlatTestFrame frame = FlatTestFrame.create( args, "FlatSystemColorsTest" );
+			frame.showFrame( FlatSystemColorsTest::new );
+		} );
+	}
+
+	FlatSystemColorsTest() {
+		initComponents();
+
+		String[] systemColors = {
+			"desktop",
+			"activeCaption",
+			"activeCaptionText",
+			"activeCaptionBorder",
+			"inactiveCaption",
+			"inactiveCaptionText",
+			"inactiveCaptionBorder",
+			"window",
+			"windowBorder",
+			"windowText",
+			"menu",
+			"menuText",
+			"text",
+			"textText",
+			"textHighlight",
+			"textHighlightText",
+			"textInactiveText",
+			"control",
+			"controlText",
+			"controlHighlight",
+			"controlLtHighlight",
+			"controlShadow",
+			"controlDkShadow",
+			"scrollbar",
+			"info",
+			"infoText",
+		};
+
+		for( String systemColor : systemColors ) {
+			systemColorsPanel.add( new JLabel( systemColor ) );
+			systemColorsPanel.add( new Preview( systemColor ), "wrap" );
+		}
+	}
+
+	private void initComponents() {
+		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
+		systemColorsPanel = new JPanel();
+
+		//======== this ========
+		setLayout(new MigLayout(
+			"ltr,insets dialog,hidemode 3",
+			// columns
+			"[fill]",
+			// rows
+			"[grow,fill]"));
+
+		//======== systemColorsPanel ========
+		{
+			systemColorsPanel.setLayout(new MigLayout(
+				"hidemode 3",
+				// columns
+				"[fill]",
+				// rows
+				"[]"));
+		}
+		add(systemColorsPanel, "cell 0 0");
+		// JFormDesigner - End of component initialization  //GEN-END:initComponents
+	}
+
+	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
+	private JPanel systemColorsPanel;
+	// JFormDesigner - End of variables declaration  //GEN-END:variables
+
+	//---- class Preview ----
+
+	private static class Preview
+		extends JPanel
+	{
+		private final String colorKey;
+		private final JPanel colorPreview;
+		private final JLabel colorCode;
+
+		Preview( String colorKey ) {
+			super( new MigLayout( "ltr,insets 0", "[50,fill][]", "[fill]0" ) );
+
+			this.colorKey = colorKey;
+
+			colorPreview = new JPanel();
+			colorPreview.setOpaque( true );
+			colorCode = new JLabel();
+
+			add( colorPreview );
+			add( colorCode, "wrap" );
+
+			update();
+		}
+
+		@Override
+		public void updateUI() {
+			super.updateUI();
+			update();
+		}
+
+		private void update() {
+			if( colorKey == null )
+				return; // called from constructor
+
+			Color color = UIManager.getColor( colorKey );
+			colorPreview.setBackground( (color != null) ? new Color( color.getRGB(), true ) : null );
+			colorCode.setText( (color != null) ? String.format( "#%06x", color.getRGB() & 0xffffff ) : "-" );
+		}
+	}
+}

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

@@ -0,0 +1,32 @@
+JFDML JFormDesigner: "7.0.0.0.194" Java: "11.0.2" encoding: "UTF-8"
+
+new FormModel {
+	contentType: "form/swing"
+	root: new FormRoot {
+		auxiliary() {
+			"JavaCodeGenerator.defaultVariableLocal": true
+		}
+		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
+			"$columnConstraints": "[fill]"
+			"$rowConstraints": "[grow,fill]"
+		} ) {
+			name: "this"
+			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
+				"$layoutConstraints": "hidemode 3"
+				"$columnConstraints": "[fill]"
+				"$rowConstraints": "[]"
+			} ) {
+				name: "systemColorsPanel"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 0"
+			} )
+		}, new FormLayoutConstraints( null ) {
+			"location": new java.awt.Point( 0, 0 )
+			"size": new java.awt.Dimension( 415, 350 )
+		} )
+	}
+}

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

@@ -24,7 +24,6 @@ import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.util.function.BiConsumer;
 import java.util.function.Supplier;
-import java.util.prefs.Preferences;
 import javax.swing.*;
 import javax.swing.UIManager.LookAndFeelInfo;
 import javax.swing.plaf.ColorUIResource;
@@ -37,6 +36,7 @@ import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatLightLaf;
 import com.formdev.flatlaf.IntelliJTheme;
 import com.formdev.flatlaf.demo.LookAndFeelsComboBox;
+import com.formdev.flatlaf.demo.DemoPrefs;
 import com.formdev.flatlaf.demo.intellijthemes.*;
 import com.formdev.flatlaf.extras.*;
 import com.formdev.flatlaf.extras.TriStateCheckBox.State;
@@ -52,7 +52,6 @@ public class FlatTestFrame
 	extends JFrame
 {
 	private static final String PREFS_ROOT_PATH = "/flatlaf-test";
-	private static final String KEY_LAF = "laf";
 	private static final String KEY_SCALE_FACTOR = "scaleFactor";
 
 	private final String title;
@@ -63,29 +62,17 @@ public class FlatTestFrame
 	public boolean useApplyComponentOrientation;
 
 	public static FlatTestFrame create( String[] args, String title ) {
-		Preferences prefs = Preferences.userRoot().node( PREFS_ROOT_PATH );
+		DemoPrefs.init( PREFS_ROOT_PATH );
 
 		// set scale factor
 		if( System.getProperty( "flatlaf.uiScale", System.getProperty( "sun.java2d.uiScale" ) ) == null ) {
-			String scaleFactor = prefs.get( KEY_SCALE_FACTOR, null );
+			String scaleFactor = DemoPrefs.getState().get( KEY_SCALE_FACTOR, null );
 			if( scaleFactor != null )
 				System.setProperty( "flatlaf.uiScale", scaleFactor );
 		}
 
 		// set look and feel
-		try {
-			if( args.length > 0 )
-				UIManager.setLookAndFeel( args[0] );
-			else {
-				String lafClassName = prefs.get( KEY_LAF, FlatLightLaf.class.getName() );
-				UIManager.setLookAndFeel( lafClassName );
-			}
-		} catch( Exception ex ) {
-			ex.printStackTrace();
-
-			// fallback
-			FlatLightLaf.install();
-		}
+		DemoPrefs.initLaf( args );
 
 		// create frame
 		return new FlatTestFrame( title );
@@ -156,6 +143,9 @@ public class FlatTestFrame
 			KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0, false ),
 			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 
+		// make the "close" button the default button
+		getRootPane().setDefaultButton( closeButton );
+
 		// close frame
 		closeButton.addActionListener(e -> dispose());
 
@@ -183,6 +173,9 @@ public class FlatTestFrame
 
 					// enable/disable scale factor combobox
 					updateScaleFactorComboBox();
+
+					// this is necessary because embedded JOptionPane's "steal" the default button
+					getRootPane().setDefaultButton( closeButton );
 				} );
 			}
 		} );
@@ -239,8 +232,6 @@ public class FlatTestFrame
 		// hide popup to avoid occasional StackOverflowError when updating UI
 		lookAndFeelComboBox.setPopupVisible( false );
 
-		Preferences.userRoot().node( PREFS_ROOT_PATH ).put( KEY_LAF, lafClassName );
-
 		applyLookAndFeel( lafClassName, null, false );
 	}
 
@@ -358,14 +349,12 @@ public class FlatTestFrame
 		// hide popup to avoid occasional StackOverflowError when updating UI
 		scaleFactorComboBox.setPopupVisible( false );
 
-		Preferences prefs = Preferences.userRoot().node( PREFS_ROOT_PATH );
-
 		if( scaleFactor != null ) {
 			System.setProperty( "flatlaf.uiScale", scaleFactor );
-			prefs.put( KEY_SCALE_FACTOR, scaleFactor );
+			DemoPrefs.getState().put( KEY_SCALE_FACTOR, scaleFactor );
 		} else {
 			System.clearProperty( "flatlaf.uiScale" );
-			prefs.remove( KEY_SCALE_FACTOR );
+			DemoPrefs.getState().remove( KEY_SCALE_FACTOR );
 		}
 
 		LookAndFeel lookAndFeel = UIManager.getLookAndFeel();

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

@@ -19,6 +19,7 @@
 @background=#ccffcc
 @foreground=#ff0000
 @selectionBackground=#00aa00
+@selectionForeground=#ffff00
 @selectionInactiveBackground=#888888
 @selectionInactiveForeground=#ffffff
 @disabledText=#000088
@@ -37,7 +38,7 @@
 *.inactiveBackground=#f0f0f0
 *.inactiveForeground=#000088
 *.selectionBackground=@selectionBackground
-*.selectionForeground=#ffff00
+*.selectionForeground=@selectionForeground
 *.disabledBackground=#e0e0e0
 *.disabledForeground=@disabledText
 *.disabledText=@disabledText
@@ -45,24 +46,38 @@
 *.acceleratorSelectionForeground=#ffffff
 
 
+#---- system colors ----
+
+activeCaption=#99b4d1
+inactiveCaption=#bfcddb
+controlHighlight=#e3e3e3
+controlLtHighlight=#fff
+controlShadow=#a0a0a0
+controlDkShadow=#696969
+
+
 #---- Button ----
 
-Button.background=#ffffff
+Button.startBackground=#fff
+Button.endBackground=#bbb
 Button.focusedBackground=#00ffff
 Button.hoverBackground=#ffff00
 Button.pressedBackground=#FFC800
 
-Button.borderColor=#0000ff
+Button.startBorderColor=#00f
+Button.endBorderColor=#f00
 Button.disabledBorderColor=#000088
 Button.focusedBorderColor=#466d94
 Button.hoverBorderColor=#ff0000
 
-Button.default.background=#dddddd
+Button.default.startBackground=#ddd
+Button.default.endBackground=#888
 Button.default.foreground=#880000
 Button.default.focusedBackground=#00ffff
 Button.default.hoverBackground=#ffff00
 Button.default.pressedBackground=#FFC800
-Button.default.borderColor=#ff0000
+Button.default.startBorderColor=#f00
+Button.default.endBorderColor=#00f
 Button.default.hoverBorderColor=#ff0000
 Button.default.focusedBorderColor=#537699
 Button.default.focusColor=#ff0000
@@ -214,10 +229,13 @@ SplitPaneDivider.oneTouchHoverArrowColor=#ff0000
 #---- TabbedPane ----
 
 TabbedPane.disabledForeground=#777777
+TabbedPane.selectedBackground=#0f0
+TabbedPane.selectedForeground=#00f
 TabbedPane.underlineColor=#4A88C7
 TabbedPane.disabledUnderlineColor=#7a7a7a
 TabbedPane.hoverColor=#eeeeee
 TabbedPane.focusColor=#dddddd
+TabbedPane.tabSeparatorColor=#00f
 TabbedPane.contentAreaColor=#bbbbbb
 
 

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

@@ -69,3 +69,8 @@ TaskPane.titleOver=#0000aa
 TaskPane.specialTitleBackground=#00ffff
 TaskPane.specialTitleForeground=#444444
 TaskPane.specialTitleOver=#dd0000
+
+
+#---- TitledPanel ----
+
+JXTitledPanel.borderColor=@@Button.startBorderColor