Table: support rounded selection (issue #844)

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

@@ -324,8 +324,7 @@ public class FlatListUI
 			(rendererComponent instanceof DefaultListCellRenderer ||
 			 rendererComponent instanceof BasicComboBoxRenderer) &&
 			(selectionArc > 0 ||
-			 (selectionInsets != null &&
+			 (selectionInsets != null && !FlatUIUtils.isInsetsEmpty( selectionInsets ))) )
-			  (selectionInsets.top != 0 || selectionInsets.left != 0 || selectionInsets.bottom != 0 || selectionInsets.right != 0))) )
 		{
 			// Because selection painting is done in the cell renderer, it would be
 			// necessary to require a FlatLaf specific renderer to implement rounded selection.
@@ -374,7 +373,15 @@ public class FlatListUI
 		rendererPane.paintComponent( g, rendererComponent, list, cx, rowBounds.y, cw, rowBounds.height, true );
 	}
 
-	/** @since 3 */
+	/**
+	 * Paints (rounded) cell selection.
+	 * Supports {@link #selectionArc} and {@link #selectionInsets}.
+	 * <p>
+	 * <b>Note:</b> This method is only invoked if either selection arc
+	 *              is greater than zero or if selection insets are not empty.
+	 *
+	 * @since 3
+	 */
 	protected void paintCellSelection( Graphics g, int row, int x, int y, int width, int height ) {
 		float arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight;
 		arcTopLeft = arcTopRight = arcBottomLeft = arcBottomRight = UIScale.scale( selectionArc / 2f );
@@ -440,7 +447,8 @@ public class FlatListUI
 	 * Paints a cell selection at the given coordinates.
 	 * The selection color must be set on the graphics context.
 	 * <p>
-	 * This method is intended for use in custom cell renderers.
+	 * This method is intended for use in custom cell renderers
+	 * to support {@link #selectionArc} and {@link #selectionInsets}.
 	 *
 	 * @since 3
 	 */

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

@@ -65,8 +65,28 @@ public class FlatTableCellBorder
 		return super.getLineColor();
 	}
 
+	@Override
+	public int getArc() {
+		if( c != null ) {
+			Integer selectionArc = getStyleFromTableUI( c, ui -> ui.selectionArc );
+			if( selectionArc != null )
+				return selectionArc;
+		}
+		return super.getArc();
+	}
+
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+		if( c != null ) {
+			Insets selectionInsets = getStyleFromTableUI( c, ui -> ui.selectionInsets );
+			if( selectionInsets != null ) {
+				x += selectionInsets.left;
+				y += selectionInsets.top;
+				width -= selectionInsets.left + selectionInsets.right;
+				height -= selectionInsets.top + selectionInsets.bottom;
+			}
+		}
+
 		this.c = c;
 		super.paintBorder( c, g, x, y, width, height );
 		this.c = null;

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

@@ -24,6 +24,8 @@ import java.awt.EventQueue;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.Point;
+import java.awt.Shape;
 import java.awt.event.ActionEvent;
 import java.awt.event.ComponentAdapter;
 import java.awt.event.ComponentEvent;
@@ -95,6 +97,8 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Table.intercellSpacing					Dimension
  * @uiDefault Table.selectionInactiveBackground			Color
  * @uiDefault Table.selectionInactiveForeground			Color
+ * @uiDefault Table.selectionInsets						Insets
+ * @uiDefault Table.selectionArc						int
  * @uiDefault Table.paintOutsideAlternateRows			boolean
  * @uiDefault Table.editorSelectAllOnStartEditing		boolean
  *
@@ -123,6 +127,8 @@ public class FlatTableUI
 	@Styleable protected Color selectionForeground;
 	@Styleable protected Color selectionInactiveBackground;
 	@Styleable protected Color selectionInactiveForeground;
+	/** @since 3.5 */ @Styleable protected Insets selectionInsets;
+	/** @since 3.5 */ @Styleable protected int selectionArc;
 
 	// for FlatTableCellBorder
 	/** @since 2 */ @Styleable protected Insets cellMargins;
@@ -162,6 +168,8 @@ public class FlatTableUI
 		selectionForeground = UIManager.getColor( "Table.selectionForeground" );
 		selectionInactiveBackground = UIManager.getColor( "Table.selectionInactiveBackground" );
 		selectionInactiveForeground = UIManager.getColor( "Table.selectionInactiveForeground" );
+		selectionInsets = UIManager.getInsets( "Table.selectionInsets" );
+		selectionArc = UIManager.getInt( "Table.selectionArc" );
 
 		toggleSelectionColors();
 
@@ -477,6 +485,10 @@ public class FlatTableUI
 			};
 		}
 
+		// rounded selection or selection insets
+		if( selectionArc > 0 || (selectionInsets != null && !FlatUIUtils.isInsetsEmpty( selectionInsets )) )
+			g = new RoundedSelectionGraphics( g, UIManager.getColor( "Table.alternateRowColor" ) );
+
 		super.paint( g, c );
 	}
 
@@ -535,7 +547,7 @@ public class FlatTableUI
 				int x = viewport.getComponentOrientation().isLeftToRight() ? 0 : viewportWidth - tableWidth;
 				for( int y = tableHeight, row = rowCount; y < viewportHeight; y += rowHeight, row++ ) {
 					if( row % 2 != 0 )
-						g.fillRect( x, y, tableWidth, rowHeight );
+						paintAlternateRowBackground( g, -1, -1, x, y, tableWidth, rowHeight );
 				}
 
 				// add listener on demand
@@ -547,6 +559,239 @@ public class FlatTableUI
 		}
 	}
 
+	/**
+	 * Paints (rounded) alternate row background.
+	 * Supports {@link #selectionArc} and {@link #selectionInsets}.
+	 * <p>
+	 * <b>Note:</b> This method is only invoked if either selection arc
+	 *              is greater than zero or if selection insets are not empty.
+	 *
+	 * @since 3.5
+	 */
+	protected void paintAlternateRowBackground( Graphics g, int row, int column, int x, int y, int width, int height ) {
+		Insets insets = (selectionInsets != null) ? (Insets) selectionInsets.clone() : null;
+		float arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight;
+		arcTopLeft = arcTopRight = arcBottomLeft = arcBottomRight = UIScale.scale( selectionArc / 2f );
+
+		if( column >= 0 ) {
+			// selection insets
+
+			// selection arc
+			if( column > 0 ) {
+				if( insets != null )
+					insets.left = 0;
+
+				if( table.getComponentOrientation().isLeftToRight() )
+					arcTopLeft = arcBottomLeft = 0;
+				else
+					arcTopRight = arcBottomRight = 0;
+			}
+			if( column < table.getColumnCount() - 1 ) {
+				if( insets != null )
+					insets.right = 0;
+
+				if( table.getComponentOrientation().isLeftToRight() )
+					arcTopRight = arcBottomRight = 0;
+				else
+					arcTopLeft = arcBottomLeft = 0;
+			}
+		}
+
+		FlatUIUtils.paintSelection( (Graphics2D) g, x, y, width, height,
+			UIScale.scale( insets ), arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight, 0 );
+	}
+
+	//TODO test if scaled (on Windows)
+
+	/**
+	 * Paints (rounded) cell selection.
+	 * Supports {@link #selectionArc} and {@link #selectionInsets}.
+	 * <p>
+	 * <b>Note:</b> This method is only invoked if either selection arc
+	 *              is greater than zero or if selection insets are not empty.
+	 *
+	 * @since 3.5
+	 */
+	protected void paintCellSelection( Graphics g, int row, int column, int x, int y, int width, int height ) {
+		boolean rowSelAllowed = table.getRowSelectionAllowed();
+		boolean colSelAllowed = table.getColumnSelectionAllowed();
+		boolean rowSelOnly = rowSelAllowed && !colSelAllowed;
+		boolean colSelOnly = colSelAllowed && !rowSelAllowed;
+		boolean cellOnlySel = rowSelAllowed && colSelAllowed;
+
+		// get selection state of surrounding cells
+		boolean leftSelected    = (column > 0 && (rowSelOnly || table.isCellSelected( row, column - 1 )));
+		boolean topSelected     = (row    > 0 && (colSelOnly || table.isCellSelected( row - 1, column )));
+		boolean rightSelected   = (column < table.getColumnCount() - 1 && (rowSelOnly || table.isCellSelected( row, column + 1 )));
+		boolean bottomSelected  = (row    < table.getRowCount() - 1    && (colSelOnly || table.isCellSelected( row + 1, column )));
+		if( !table.getComponentOrientation().isLeftToRight() ) {
+			boolean temp = leftSelected;
+			leftSelected = rightSelected;
+			rightSelected = temp;
+		}
+
+		// selection insets
+		// (insets are applied to whole row if row-only selection is used,
+		//  or to whole column if column-only selection is used,
+		//  or to cell if cell selection is used)
+		Insets insets = (selectionInsets != null) ? (Insets) selectionInsets.clone() : null;
+		if( insets != null ) {
+			if( rowSelOnly && leftSelected )
+				insets.left = 0;
+			if( rowSelOnly && rightSelected )
+				insets.right = 0;
+			if( colSelOnly && topSelected )
+				insets.top = 0;
+			if( colSelOnly && bottomSelected )
+				insets.bottom = 0;
+		}
+
+		// selection arc
+		float arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight;
+		arcTopLeft = arcTopRight = arcBottomLeft = arcBottomRight = UIScale.scale( selectionArc / 2f );
+		if( selectionArc > 0 ) {
+			// note that intercellSpacing is not considered as a gap because
+			// grid lines are usually painted to intercell space
+			boolean hasRowGap = (rowSelOnly || cellOnlySel) && insets != null && (insets.top != 0 || insets.bottom != 0);
+			boolean hasColGap = (colSelOnly || cellOnlySel) && insets != null && (insets.left != 0 || insets.right != 0);
+
+			if( leftSelected && !hasColGap )
+				arcTopLeft = arcBottomLeft = 0;
+			if( rightSelected && !hasColGap )
+				arcTopRight = arcBottomRight = 0;
+			if( topSelected && !hasRowGap )
+				arcTopLeft = arcTopRight = 0;
+			if( bottomSelected && !hasRowGap )
+				arcBottomLeft = arcBottomRight = 0;
+		}
+
+		FlatUIUtils.paintSelection( (Graphics2D) g, x, y, width, height,
+			UIScale.scale( insets ), arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight, 0 );
+	}
+
+	/**
+	 * Paints a cell selection at the given coordinates.
+	 * The selection color must be set on the graphics context.
+	 * <p>
+	 * This method is intended for use in custom cell renderers to support
+	 * {@link #selectionArc} and {@link #selectionInsets}.
+	 *
+	 * @since 3.5
+	 */
+	public static void paintCellSelection( JTable table, Graphics g, int row, int column, int x, int y, int width, int height ) {
+		if( !(table.getUI() instanceof FlatTableUI) )
+			return;
+
+		FlatTableUI ui = (FlatTableUI) table.getUI();
+		ui.paintCellSelection( g, row, column, x, y, width, height );
+	}
+
+	//---- class RoundedSelectionGraphics -------------------------------------
+
+	/**
+	 * Because selection painting is done in the cell renderer, it would be
+	 * necessary to require a FlatLaf specific renderer to implement rounded selection.
+	 * Using a LaF specific renderer was avoided because often a custom renderer is
+	 * already used in applications. Then either the rounded selection is not used,
+	 * or the application has to be changed to extend a FlatLaf renderer.
+	 * <p>
+	 * To solve this, a graphics proxy is used that paints rounded selection
+	 * if row/column/cell is selected and the renderer wants to fill the background.
+	 */
+	private class RoundedSelectionGraphics
+		extends Graphics2DProxy
+	{
+		private final Color alternateRowColor;
+
+		// used to avoid endless loop in case that paintCellSelection() invokes
+		// g.fillRect() with full bounds (selectionInsets is 0,0,0,0)
+		private boolean inPaintSelection;
+
+		RoundedSelectionGraphics( Graphics delegate, Color alternateRowColor ) {
+			super( (Graphics2D) delegate );
+			this.alternateRowColor = alternateRowColor;
+		}
+
+		@Override
+		public Graphics create() {
+			return new RoundedSelectionGraphics( super.create(), alternateRowColor );
+		}
+
+		@Override
+		public Graphics create( int x, int y, int width, int height ) {
+			return new RoundedSelectionGraphics( super.create( x, y, width, height ), alternateRowColor );
+		}
+
+		@Override
+		public void fillRect( int x, int y, int width, int height ) {
+			if( fillCellSelection( x, y, width, height ) )
+				return;
+
+			super.fillRect( x, y, width, height );
+		}
+
+		@Override
+		public void fill( Shape shape ) {
+			if( shape instanceof Rectangle2D ) {
+				Rectangle2D r = (Rectangle2D) shape;
+				double x = r.getX();
+				double y = r.getY();
+				double width = r.getWidth();
+				double height = r.getHeight();
+				if( x == (int) x && y == (int) y && width == (int) width && height == (int) height ) {
+					if( fillCellSelection( (int) x, (int) y, (int) width, (int) height ) )
+						return;
+				}
+			}
+
+			super.fill( shape );
+		}
+
+		private boolean fillCellSelection( int x, int y, int width, int height ) {
+			if( inPaintSelection )
+				return false;
+
+			Color color;
+			Component rendererComponent;
+			if( x == 0 && y == 0 &&
+				((color = getColor()) == table.getSelectionBackground() ||
+				 (alternateRowColor != null && color == alternateRowColor)) &&
+				(rendererComponent = findActiveRendererComponent()) != null &&
+				width == rendererComponent.getWidth() &&
+				height == rendererComponent.getHeight() )
+			{
+				Point location = rendererComponent.getLocation();
+				int row = table.rowAtPoint( location );
+				int column = table.columnAtPoint( location );
+				if( row >= 0 && column >= 0 ) {
+					inPaintSelection = true;
+					if( color == table.getSelectionBackground() )
+						paintCellSelection( this, row, column, x, y, width, height );
+					else
+						paintAlternateRowBackground( this, row, column, x, y, width, height );
+					inPaintSelection = false;
+
+					return true;
+				}
+			}
+			return false;
+		}
+
+		/**
+		 * A CellRendererPane may contain multiple components, if multiple renderers
+		 * are used. Inactive renderer components have size {@code 0x0}.
+		 */
+		private Component findActiveRendererComponent() {
+			int count = rendererPane.getComponentCount();
+			for( int i = 0; i < count; i++ ) {
+				Component c = rendererPane.getComponent( i );
+				if( c.getWidth() > 0 && c.getHeight() > 0 )
+					return c;
+			}
+			return null;
+		}
+	}
+
 	//---- class OutsideAlternateRowsListener ---------------------------------
 
 	/**

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

@@ -124,6 +124,11 @@ public class FlatUIUtils
 		dest.right = src.right;
 	}
 
+	/** @since 3.5 */
+	public static boolean isInsetsEmpty( Insets insets ) {
+		return insets.top == 0 && insets.left == 0 && insets.bottom == 0 && insets.right == 0;
+	}
+
 	public static Color getUIColor( String key, int defaultColorRGB ) {
 		Color color = UIManager.getColor( key );
 		return (color != null) ? color : new Color( defaultColorRGB );

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestFlatStyleableInfo.java

@@ -800,6 +800,8 @@ public class TestFlatStyleableInfo
 			"selectionForeground", Color.class,
 			"selectionInactiveBackground", Color.class,
 			"selectionInactiveForeground", Color.class,
+			"selectionInsets", Insets.class,
+			"selectionArc", int.class,
 
 			// FlatTableCellBorder
 			"cellMargins", Insets.class,

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestFlatStyleableValue.java

@@ -305,6 +305,9 @@ public class TestFlatStyleableValue
 		testColor( c, ui, "buttonPressedArrowColor", 0x123456 );
 
 		testColor( c, ui, "popupBackground", 0x123456 );
+		testInsets( c, ui, "popupInsets", 1,2,3,4 );
+		testInsets( c, ui, "selectionInsets", 1,2,3,4 );
+		testInteger( c, ui, "selectionArc", 123 );
 
 		// border
 		flatRoundBorder( c, ui );
@@ -367,6 +370,8 @@ public class TestFlatStyleableValue
 		testColor( c, ui, "selectionForeground", 0x123456 );
 		testColor( c, ui, "selectionInactiveBackground", 0x123456 );
 		testColor( c, ui, "selectionInactiveForeground", 0x123456 );
+		testInsets( c, ui, "selectionInsets", 1,2,3,4 );
+		testInteger( c, ui, "selectionArc", 123 );
 
 		// FlatListCellBorder
 		testInsets( c, ui, "cellMargins", 1,2,3,4 );
@@ -802,6 +807,8 @@ public class TestFlatStyleableValue
 		testColor( c, ui, "selectionForeground", 0x123456 );
 		testColor( c, ui, "selectionInactiveBackground", 0x123456 );
 		testColor( c, ui, "selectionInactiveForeground", 0x901324 );
+		testInsets( c, ui, "selectionInsets", 1,2,3,4 );
+		testInteger( c, ui, "selectionArc", 123 );
 
 		// FlatTableCellBorder
 		testInsets( c, ui, "cellMargins", 1,2,3,4 );
@@ -931,6 +938,8 @@ public class TestFlatStyleableValue
 		testColor( c, ui, "selectionInactiveBackground", 0x123456 );
 		testColor( c, ui, "selectionInactiveForeground", 0x123456 );
 		testColor( c, ui, "selectionBorderColor", 0x123456 );
+		testInsets( c, ui, "selectionInsets", 1,2,3,4 );
+		testInteger( c, ui, "selectionArc", 123 );
 		testBoolean( c, ui, "wideSelection", true );
 		testBoolean( c, ui, "showCellFocusIndicator", true );
 

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestFlatStyling.java

@@ -987,6 +987,8 @@ public class TestFlatStyling
 		ui.applyStyle( "selectionForeground: #fff" );
 		ui.applyStyle( "selectionInactiveBackground: #fff" );
 		ui.applyStyle( "selectionInactiveForeground: #fff" );
+		ui.applyStyle( "selectionInsets: 1,2,3,4" );
+		ui.applyStyle( "selectionArc: 8" );
 
 		// FlatTableCellBorder
 		ui.applyStyle( "cellMargins: 1,2,3,4" );

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

@@ -25,6 +25,8 @@ import javax.swing.*;
 import javax.swing.table.*;
 import javax.swing.tree.*;
 import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.util.ColorFunctions;
 import net.miginfocom.swing.*;
 
 /**
@@ -93,10 +95,12 @@ class DataComponentsPanel
 
 	private void rowSelectionChanged() {
 		table1.setRowSelectionAllowed( rowSelectionCheckBox.isSelected() );
+		roundedSelectionChanged();
 	}
 
 	private void columnSelectionChanged() {
 		table1.setColumnSelectionAllowed( columnSelectionCheckBox.isSelected() );
+		roundedSelectionChanged();
 	}
 
 	private void showHorizontalLinesChanged() {
@@ -127,6 +131,28 @@ class DataComponentsPanel
 		intercellSpacingCheckBox.setSelected( table1.getRowMargin() != 0 );
 	}
 
+	private void roundedSelectionChanged() {
+		String style = null;
+		if( roundedSelectionCheckBox.isSelected() ) {
+			style = rowSelectionCheckBox.isSelected()
+				? "selectionArc: 6; selectionInsets: 0,1,0,1"
+				: "selectionArc: 6";
+		}
+		table1.putClientProperty( FlatClientProperties.STYLE, style );
+	}
+
+	private void alternatingRowsChanged() {
+		Color alternateRowColor = null;
+		if( alternatingRowsCheckBox.isSelected() ) {
+			Color background = table1.getBackground();
+			alternateRowColor = FlatLaf.isLafDark()
+				? ColorFunctions.lighten( background, 0.05f )
+				: ColorFunctions.darken( background, 0.05f );
+		}
+		UIManager.put( "Table.alternateRowColor", alternateRowColor );
+		table1.repaint();
+	}
+
 	@SuppressWarnings( { "unchecked", "rawtypes" } )
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
@@ -151,12 +177,14 @@ class DataComponentsPanel
 		JScrollPane scrollPane5 = new JScrollPane();
 		table1 = new JTable();
 		JPanel tableOptionsPanel = new JPanel();
+		roundedSelectionCheckBox = new JCheckBox();
 		showHorizontalLinesCheckBox = new JCheckBox();
 		showVerticalLinesCheckBox = new JCheckBox();
 		intercellSpacingCheckBox = new JCheckBox();
 		redGridColorCheckBox = new JCheckBox();
 		rowSelectionCheckBox = new JCheckBox();
 		columnSelectionCheckBox = new JCheckBox();
+		alternatingRowsCheckBox = new JCheckBox();
 		dndCheckBox = new JCheckBox();
 		JPopupMenu popupMenu2 = new JPopupMenu();
 		JMenuItem menuItem3 = new JMenuItem();
@@ -403,44 +431,56 @@ class DataComponentsPanel
 				"[]0" +
 				"[]0" +
 				"[]0" +
+				"[]0" +
+				"[]0" +
 				"[]0"));
 
+			//---- roundedSelectionCheckBox ----
+			roundedSelectionCheckBox.setText("rounded selection");
+			roundedSelectionCheckBox.addActionListener(e -> roundedSelectionChanged());
+			tableOptionsPanel.add(roundedSelectionCheckBox, "cell 0 0");
+
 			//---- showHorizontalLinesCheckBox ----
 			showHorizontalLinesCheckBox.setText("show horizontal lines");
 			showHorizontalLinesCheckBox.addActionListener(e -> showHorizontalLinesChanged());
-			tableOptionsPanel.add(showHorizontalLinesCheckBox, "cell 0 0");
+			tableOptionsPanel.add(showHorizontalLinesCheckBox, "cell 0 1");
 
 			//---- showVerticalLinesCheckBox ----
 			showVerticalLinesCheckBox.setText("show vertical lines");
 			showVerticalLinesCheckBox.addActionListener(e -> showVerticalLinesChanged());
-			tableOptionsPanel.add(showVerticalLinesCheckBox, "cell 0 1");
+			tableOptionsPanel.add(showVerticalLinesCheckBox, "cell 0 2");
 
 			//---- intercellSpacingCheckBox ----
 			intercellSpacingCheckBox.setText("intercell spacing");
 			intercellSpacingCheckBox.addActionListener(e -> intercellSpacingChanged());
-			tableOptionsPanel.add(intercellSpacingCheckBox, "cell 0 2");
+			tableOptionsPanel.add(intercellSpacingCheckBox, "cell 0 3");
 
 			//---- redGridColorCheckBox ----
 			redGridColorCheckBox.setText("red grid color");
 			redGridColorCheckBox.addActionListener(e -> redGridColorChanged());
-			tableOptionsPanel.add(redGridColorCheckBox, "cell 0 3");
+			tableOptionsPanel.add(redGridColorCheckBox, "cell 0 4");
 
 			//---- rowSelectionCheckBox ----
 			rowSelectionCheckBox.setText("row selection");
 			rowSelectionCheckBox.setSelected(true);
 			rowSelectionCheckBox.addActionListener(e -> rowSelectionChanged());
-			tableOptionsPanel.add(rowSelectionCheckBox, "cell 0 4");
+			tableOptionsPanel.add(rowSelectionCheckBox, "cell 0 5");
 
 			//---- columnSelectionCheckBox ----
 			columnSelectionCheckBox.setText("column selection");
 			columnSelectionCheckBox.addActionListener(e -> columnSelectionChanged());
-			tableOptionsPanel.add(columnSelectionCheckBox, "cell 0 5");
+			tableOptionsPanel.add(columnSelectionCheckBox, "cell 0 6");
+
+			//---- alternatingRowsCheckBox ----
+			alternatingRowsCheckBox.setText("alternating rows");
+			alternatingRowsCheckBox.addActionListener(e -> alternatingRowsChanged());
+			tableOptionsPanel.add(alternatingRowsCheckBox, "cell 0 7");
 
 			//---- dndCheckBox ----
 			dndCheckBox.setText("enable drag and drop");
 			dndCheckBox.setMnemonic('D');
 			dndCheckBox.addActionListener(e -> dndChanged());
-			tableOptionsPanel.add(dndCheckBox, "cell 0 6");
+			tableOptionsPanel.add(dndCheckBox, "cell 0 8");
 		}
 		add(tableOptionsPanel, "cell 4 3");
 
@@ -477,12 +517,14 @@ class DataComponentsPanel
 	private JTree tree3;
 	private JTree tree2;
 	private JTable table1;
+	private JCheckBox roundedSelectionCheckBox;
 	private JCheckBox showHorizontalLinesCheckBox;
 	private JCheckBox showVerticalLinesCheckBox;
 	private JCheckBox intercellSpacingCheckBox;
 	private JCheckBox redGridColorCheckBox;
 	private JCheckBox rowSelectionCheckBox;
 	private JCheckBox columnSelectionCheckBox;
+	private JCheckBox alternatingRowsCheckBox;
 	private JCheckBox dndCheckBox;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 

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

@@ -343,9 +343,19 @@ new FormModel {
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$layoutConstraints": "insets 0,hidemode 3"
 				"$columnConstraints": "[]"
-				"$rowConstraints": "[]0[]0[]0[]0[]0[]0[]0"
+				"$rowConstraints": "[]0[]0[]0[]0[]0[]0[]0[]0[]0"
 			} ) {
 				name: "tableOptionsPanel"
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "roundedSelectionCheckBox"
+					"text": "rounded selection"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "showHorizontalLinesCheckBox"
 					"text": "show horizontal lines"
@@ -354,7 +364,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showHorizontalLinesChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 0"
+					"value": "cell 0 1"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "showVerticalLinesCheckBox"
@@ -364,7 +374,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showVerticalLinesChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 1"
+					"value": "cell 0 2"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "intercellSpacingCheckBox"
@@ -374,7 +384,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "intercellSpacingChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 2"
+					"value": "cell 0 3"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "redGridColorCheckBox"
@@ -384,7 +394,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "redGridColorChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 3"
+					"value": "cell 0 4"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "rowSelectionCheckBox"
@@ -395,7 +405,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rowSelectionChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 4"
+					"value": "cell 0 5"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "columnSelectionCheckBox"
@@ -405,7 +415,17 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "columnSelectionChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 5"
+					"value": "cell 0 6"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "alternatingRowsCheckBox"
+					"text": "alternating rows"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "alternatingRowsChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 7"
 				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "dndCheckBox"
@@ -416,7 +436,7 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "dndChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 6"
+					"value": "cell 0 8"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 3"

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponents2Test.java

@@ -47,6 +47,7 @@ import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.icons.FlatMenuArrowIcon;
 import com.formdev.flatlaf.ui.FlatEmptyBorder;
 import com.formdev.flatlaf.ui.FlatListUI;
+import com.formdev.flatlaf.ui.FlatTableUI;
 import com.formdev.flatlaf.util.UIScale;
 import com.jidesoft.swing.*;
 import com.jidesoft.swing.CheckBoxTreeCellRenderer;
@@ -164,6 +165,8 @@ public class FlatComponents2Test
 		JComboBox<String> editableComboBox = new JComboBox<>( months );
 		editableComboBox.setEditable( true );
 		cm.getColumn(3).setCellEditor( new DefaultCellEditor( editableComboBox ) );
+
+//		table.setDefaultRenderer( Object.class, new TestLabelRoundedTableCellRenderer() );
 	}
 
 	private void expandTree( JTree tree ) {
@@ -229,6 +232,65 @@ public class FlatComponents2Test
 		FlatLaf.updateUILater();
 	}
 
+	private void roundedSelectionChanged() {
+		String style = roundedSelectionCheckBox.isSelected() ? "selectionArc: 12; " : "";
+		int left = leftSelectionInsetsCheckBox.isSelected() ? 2 : 0;
+		int right = rightSelectionInsetsCheckBox.isSelected() ? 2 : 0;
+		int top = topSelectionInsetsCheckBox.isSelected() ? 2 : 0;
+		int bottom = bottomSelectionInsetsCheckBox.isSelected() ? 2 : 0;
+		if( left > 0 || right > 0 || top > 0 || bottom > 0 )
+			style += "selectionInsets: " + top + ',' + left + ',' + bottom + ',' + right;
+		if( style.isEmpty() )
+			style = null;
+
+		list1.putClientProperty( FlatClientProperties.STYLE, style );
+		list2.putClientProperty( FlatClientProperties.STYLE, style );
+		tree1.putClientProperty( FlatClientProperties.STYLE, style );
+		tree2.putClientProperty( FlatClientProperties.STYLE, style );
+		xTree1.putClientProperty( FlatClientProperties.STYLE, style );
+		checkBoxTree1.putClientProperty( FlatClientProperties.STYLE, style );
+		table1.putClientProperty( FlatClientProperties.STYLE, style );
+		xTable1.putClientProperty( FlatClientProperties.STYLE, style );
+		xTreeTable1.putClientProperty( FlatClientProperties.STYLE, style );
+
+		// initial selection
+		if( style != null ) {
+			initSelection( list1 );
+			initSelection( list2 );
+			initSelection( tree1 );
+			initSelection( tree2 );
+			initSelection( xTree1 );
+			initSelection( checkBoxTree1 );
+			initSelection( table1 );
+			initSelection( xTable1 );
+			initSelection( xTreeTable1 );
+		}
+
+		if( paintOutsideAlternateRowsCheckBox.isSelected() )
+			table1ScrollPane.repaint();
+	}
+
+	private static void initSelection( JList<?> list ) {
+		if( list.isSelectionEmpty() ) {
+			list.addSelectionInterval( 1, 2 );
+			list.addSelectionInterval( 5, 5 );
+		}
+	}
+
+	private static void initSelection( JTree tree ) {
+		if( tree.isSelectionEmpty() ) {
+			tree.addSelectionInterval( 1, 2 );
+			tree.addSelectionInterval( 5, 5 );
+		}
+	}
+
+	private static void initSelection( JTable table ) {
+		if( table.getSelectedRowCount() == 0 ) {
+			table.addRowSelectionInterval( 1, 2 );
+			table.addRowSelectionInterval( 5, 5 );
+		}
+	}
+
 	private void dndChanged() {
 		boolean dnd = dndCheckBox.isSelected();
 		list1.setDragEnabled( dnd );
@@ -535,6 +597,12 @@ public class FlatComponents2Test
 	public void applyComponentOrientation( ComponentOrientation o ) {
 		super.applyComponentOrientation( o );
 
+		// always use left-to-right for options panels
+		generalOptionsPanel.applyComponentOrientation( ComponentOrientation.LEFT_TO_RIGHT );
+		listOptionsPanel.applyComponentOrientation( ComponentOrientation.LEFT_TO_RIGHT );
+		treeOptionsPanel.applyComponentOrientation( ComponentOrientation.LEFT_TO_RIGHT );
+		tableOptionsPanel.applyComponentOrientation( ComponentOrientation.LEFT_TO_RIGHT );
+
 		// swap upper right and left corners (other corners are not used in this app)
 		Component leftCorner = table1ScrollPane.getCorner( ScrollPaneConstants.UPPER_LEFT_CORNER );
 		Component rightCorner = table1ScrollPane.getCorner( ScrollPaneConstants.UPPER_RIGHT_CORNER );
@@ -596,16 +664,22 @@ public class FlatComponents2Test
 		JLabel label2 = new JLabel();
 		xTreeTable1ScrollPane = new JScrollPane();
 		xTreeTable1 = new JXTreeTable();
-		JPanel panel5 = new JPanel();
+		generalOptionsPanel = new JPanel();
+		roundedSelectionCheckBox = new JCheckBox();
+		JLabel label6 = new JLabel();
+		topSelectionInsetsCheckBox = new JCheckBox();
+		bottomSelectionInsetsCheckBox = new JCheckBox();
+		leftSelectionInsetsCheckBox = new JCheckBox();
+		rightSelectionInsetsCheckBox = new JCheckBox();
 		dndCheckBox = new JCheckBox();
-		JPanel panel6 = new JPanel();
+		listOptionsPanel = new JPanel();
 		JLabel listRendererLabel = new JLabel();
 		listRendererComboBox = new JComboBox<>();
 		JLabel listLayoutOrientationLabel = new JLabel();
 		listLayoutOrientationField = new JComboBox<>();
 		JLabel listVisibleRowCountLabel = new JLabel();
 		listVisibleRowCountSpinner = new JSpinner();
-		JPanel treeOptionsPanel = new JPanel();
+		treeOptionsPanel = new JPanel();
 		JLabel treeRendererLabel = new JLabel();
 		treeRendererComboBox = new JComboBox<>();
 		treeWideSelectionCheckBox = new JCheckBox();
@@ -614,7 +688,7 @@ public class FlatComponents2Test
 		treeRedLinesCheckBox = new JCheckBox();
 		treeEditableCheckBox = new JCheckBox();
 		treeShowDefaultIconsCheckBox = new JCheckBox();
-		JPanel tableOptionsPanel = new JPanel();
+		tableOptionsPanel = new JPanel();
 		JLabel autoResizeModeLabel = new JLabel();
 		autoResizeModeField = new JComboBox<>();
 		JLabel sortIconPositionLabel = new JLabel();
@@ -872,30 +946,68 @@ public class FlatComponents2Test
 		}
 		add(xTreeTable1ScrollPane, "cell 4 3 2 1");
 
-		//======== panel5 ========
+		//======== generalOptionsPanel ========
 		{
-			panel5.setBorder(new TitledBorder("General Control"));
+			generalOptionsPanel.setBorder(new TitledBorder("General Control"));
-			panel5.putClientProperty("FlatLaf.internal.testing.ignore", true);
+			generalOptionsPanel.putClientProperty("FlatLaf.internal.testing.ignore", true);
-			panel5.setLayout(new MigLayout(
+			generalOptionsPanel.setLayout(new MigLayout(
-				"hidemode 3",
+				"insets 8,hidemode 3",
 				// columns
-				"[fill]",
+				"[left]",
 				// rows
+				"[]" +
+				"[]0" +
+				"[]0" +
+				"[]rel" +
 				"[]"));
 
+			//---- roundedSelectionCheckBox ----
+			roundedSelectionCheckBox.setText("rounded selection");
+			roundedSelectionCheckBox.setMnemonic('D');
+			roundedSelectionCheckBox.addActionListener(e -> roundedSelectionChanged());
+			generalOptionsPanel.add(roundedSelectionCheckBox, "cell 0 0");
+
+			//---- label6 ----
+			label6.setText("Selection insets:");
+			generalOptionsPanel.add(label6, "cell 0 1");
+
+			//---- topSelectionInsetsCheckBox ----
+			topSelectionInsetsCheckBox.setText("top");
+			topSelectionInsetsCheckBox.setMnemonic('D');
+			topSelectionInsetsCheckBox.addActionListener(e -> roundedSelectionChanged());
+			generalOptionsPanel.add(topSelectionInsetsCheckBox, "cell 0 2,gapx ind");
+
+			//---- bottomSelectionInsetsCheckBox ----
+			bottomSelectionInsetsCheckBox.setText("bottom");
+			bottomSelectionInsetsCheckBox.setMnemonic('D');
+			bottomSelectionInsetsCheckBox.addActionListener(e -> roundedSelectionChanged());
+			generalOptionsPanel.add(bottomSelectionInsetsCheckBox, "cell 0 2");
+
+			//---- leftSelectionInsetsCheckBox ----
+			leftSelectionInsetsCheckBox.setText("left");
+			leftSelectionInsetsCheckBox.setMnemonic('D');
+			leftSelectionInsetsCheckBox.addActionListener(e -> roundedSelectionChanged());
+			generalOptionsPanel.add(leftSelectionInsetsCheckBox, "cell 0 3,gapx ind");
+
+			//---- rightSelectionInsetsCheckBox ----
+			rightSelectionInsetsCheckBox.setText("right");
+			rightSelectionInsetsCheckBox.setMnemonic('D');
+			rightSelectionInsetsCheckBox.addActionListener(e -> roundedSelectionChanged());
+			generalOptionsPanel.add(rightSelectionInsetsCheckBox, "cell 0 3");
+
 			//---- dndCheckBox ----
 			dndCheckBox.setText("drag and drop");
 			dndCheckBox.setMnemonic('D');
 			dndCheckBox.addActionListener(e -> dndChanged());
-			panel5.add(dndCheckBox, "cell 0 0");
+			generalOptionsPanel.add(dndCheckBox, "cell 0 4");
 		}
-		add(panel5, "cell 0 4 4 1");
+		add(generalOptionsPanel, "cell 0 4 4 1");
 
-		//======== panel6 ========
+		//======== listOptionsPanel ========
 		{
-			panel6.setBorder(new TitledBorder("JList Control"));
+			listOptionsPanel.setBorder(new TitledBorder("JList Control"));
-			panel6.setLayout(new MigLayout(
+			listOptionsPanel.setLayout(new MigLayout(
-				"hidemode 3",
+				"insets 8,hidemode 3",
 				// columns
 				"[fill]" +
 				"[fill]",
@@ -906,7 +1018,7 @@ public class FlatComponents2Test
 
 			//---- listRendererLabel ----
 			listRendererLabel.setText("Renderer:");
-			panel6.add(listRendererLabel, "cell 0 0");
+			listOptionsPanel.add(listRendererLabel, "cell 0 0");
 
 			//---- listRendererComboBox ----
 			listRendererComboBox.setModel(new DefaultComboBoxModel<>(new String[] {
@@ -916,11 +1028,11 @@ public class FlatComponents2Test
 				"labelRounded"
 			}));
 			listRendererComboBox.addActionListener(e -> listRendererChanged());
-			panel6.add(listRendererComboBox, "cell 1 0");
+			listOptionsPanel.add(listRendererComboBox, "cell 1 0");
 
 			//---- listLayoutOrientationLabel ----
 			listLayoutOrientationLabel.setText("Orientation:");
-			panel6.add(listLayoutOrientationLabel, "cell 0 1");
+			listOptionsPanel.add(listLayoutOrientationLabel, "cell 0 1");
 
 			//---- listLayoutOrientationField ----
 			listLayoutOrientationField.setModel(new DefaultComboBoxModel<>(new String[] {
@@ -929,25 +1041,25 @@ public class FlatComponents2Test
 				"horzontal wrap"
 			}));
 			listLayoutOrientationField.addActionListener(e -> listLayoutOrientationChanged());
-			panel6.add(listLayoutOrientationField, "cell 1 1");
+			listOptionsPanel.add(listLayoutOrientationField, "cell 1 1");
 
 			//---- listVisibleRowCountLabel ----
 			listVisibleRowCountLabel.setText("Visible row count:");
-			panel6.add(listVisibleRowCountLabel, "cell 0 2");
+			listOptionsPanel.add(listVisibleRowCountLabel, "cell 0 2");
 
 			//---- listVisibleRowCountSpinner ----
 			listVisibleRowCountSpinner.setModel(new SpinnerNumberModel(8, 0, null, 1));
 			listVisibleRowCountSpinner.addChangeListener(e -> listVisibleRowCountChanged());
-			panel6.add(listVisibleRowCountSpinner, "cell 1 2");
+			listOptionsPanel.add(listVisibleRowCountSpinner, "cell 1 2");
 		}
-		add(panel6, "cell 0 4 4 1");
+		add(listOptionsPanel, "cell 0 4 4 1");
 
 		//======== treeOptionsPanel ========
 		{
 			treeOptionsPanel.setBorder(new TitledBorder("JTree Control"));
 			treeOptionsPanel.putClientProperty("FlatLaf.internal.testing.ignore", true);
 			treeOptionsPanel.setLayout(new MigLayout(
-				"hidemode 3",
+				"insets 8,hidemode 3",
 				// columns
 				"[left]",
 				// rows
@@ -1014,7 +1126,7 @@ public class FlatComponents2Test
 			tableOptionsPanel.setBorder(new TitledBorder("JTable Control"));
 			tableOptionsPanel.putClientProperty("FlatLaf.internal.testing.ignore", true);
 			tableOptionsPanel.setLayout(new MigLayout(
-				"hidemode 3",
+				"insets 8,hidemode 3",
 				// columns
 				"[]" +
 				"[fill]" +
@@ -1132,10 +1244,18 @@ public class FlatComponents2Test
 	private CheckBoxTree checkBoxTree1;
 	private JScrollPane xTreeTable1ScrollPane;
 	private JXTreeTable xTreeTable1;
+	private JPanel generalOptionsPanel;
+	private JCheckBox roundedSelectionCheckBox;
+	private JCheckBox topSelectionInsetsCheckBox;
+	private JCheckBox bottomSelectionInsetsCheckBox;
+	private JCheckBox leftSelectionInsetsCheckBox;
+	private JCheckBox rightSelectionInsetsCheckBox;
 	private JCheckBox dndCheckBox;
+	private JPanel listOptionsPanel;
 	private JComboBox<String> listRendererComboBox;
 	private JComboBox<String> listLayoutOrientationField;
 	private JSpinner listVisibleRowCountSpinner;
+	private JPanel treeOptionsPanel;
 	private JComboBox<String> treeRendererComboBox;
 	private JCheckBox treeWideSelectionCheckBox;
 	private JCheckBox treePaintSelectionCheckBox;
@@ -1143,6 +1263,7 @@ public class FlatComponents2Test
 	private JCheckBox treeRedLinesCheckBox;
 	private JCheckBox treeEditableCheckBox;
 	private JCheckBox treeShowDefaultIconsCheckBox;
+	private JPanel tableOptionsPanel;
 	private JComboBox<String> autoResizeModeField;
 	private JComboBox<String> sortIconPositionComboBox;
 	private JCheckBox showHorizontalLinesCheckBox;
@@ -1683,4 +1804,46 @@ public class FlatComponents2Test
 			return this;
 		}
 	}
+
+	//---- class TestLabelRoundedTableCellRenderer ----------------------------
+
+	@SuppressWarnings( "unused" )
+	private static class TestLabelRoundedTableCellRenderer
+		extends JLabel
+		implements TableCellRenderer
+	{
+		private JTable table;
+		private int row;
+		private int column;
+		private boolean isSelected;
+
+		TestLabelRoundedTableCellRenderer() {
+			setBorder( new FlatEmptyBorder( 1, 6, 1, 6 ) );
+		}
+
+		@Override
+		public Component getTableCellRendererComponent( JTable table, Object value,
+			boolean isSelected, boolean hasFocus, int row, int column )
+		{
+			this.table = table;
+			this.row = row;
+			this.column = column;
+			this.isSelected = isSelected;
+
+			setText( String.valueOf( value ) );
+			setBackground( isSelected ? Color.green : table.getBackground() );
+			setForeground( isSelected ? Color.blue : table.getForeground() );
+			return this;
+		}
+
+		@Override
+		protected void paintComponent( Graphics g ) {
+			if( isSelected ) {
+				g.setColor( getBackground() );
+				FlatTableUI.paintCellSelection( table, g, row, column, 0, 0, getWidth(), getHeight() );
+			}
+
+			super.paintComponent( g );
+		}
+	}
 }

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponents2Test.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "8.0.0.0.194" Java: "17.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "8.2.2.0.9999" Java: "21.0.1" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -297,13 +297,77 @@ new FormModel {
 				"value": "cell 4 3 2 1"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-				"$layoutConstraints": "hidemode 3"
+				"$layoutConstraints": "insets 8,hidemode 3"
-				"$columnConstraints": "[fill]"
+				"$columnConstraints": "[left]"
-				"$rowConstraints": "[]"
+				"$rowConstraints": "[][]0[]0[]rel[]"
 			} ) {
-				name: "panel5"
+				name: "generalOptionsPanel"
 				"border": new javax.swing.border.TitledBorder( "General Control" )
 				"$client.FlatLaf.internal.testing.ignore": true
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "roundedSelectionCheckBox"
+					"text": "rounded selection"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 0"
+				} )
+				add( new FormComponent( "javax.swing.JLabel" ) {
+					name: "label6"
+					"text": "Selection insets:"
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 1"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "topSelectionInsetsCheckBox"
+					"text": "top"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 2,gapx ind"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "bottomSelectionInsetsCheckBox"
+					"text": "bottom"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 2"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "leftSelectionInsetsCheckBox"
+					"text": "left"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 3,gapx ind"
+				} )
+				add( new FormComponent( "javax.swing.JCheckBox" ) {
+					name: "rightSelectionInsetsCheckBox"
+					"text": "right"
+					"mnemonic": 68
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
+					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "roundedSelectionChanged", false ) )
+				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+					"value": "cell 0 3"
+				} )
 				add( new FormComponent( "javax.swing.JCheckBox" ) {
 					name: "dndCheckBox"
 					"text": "drag and drop"
@@ -313,18 +377,21 @@ new FormModel {
 					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "dndChanged", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-					"value": "cell 0 0"
+					"value": "cell 0 4"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 4 4 1"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-				"$layoutConstraints": "hidemode 3"
+				"$layoutConstraints": "insets 8,hidemode 3"
 				"$columnConstraints": "[fill][fill]"
 				"$rowConstraints": "[][][]"
 			} ) {
-				name: "panel6"
+				name: "listOptionsPanel"
 				"border": new javax.swing.border.TitledBorder( "JList Control" )
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
 				add( new FormComponent( "javax.swing.JLabel" ) {
 					name: "listRendererLabel"
 					"text": "Renderer:"
@@ -392,13 +459,16 @@ new FormModel {
 				"value": "cell 0 4 4 1"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-				"$layoutConstraints": "hidemode 3"
+				"$layoutConstraints": "insets 8,hidemode 3"
 				"$columnConstraints": "[left]"
 				"$rowConstraints": "[][]0[]0[]0[]"
 			} ) {
 				name: "treeOptionsPanel"
 				"border": new javax.swing.border.TitledBorder( "JTree Control" )
 				"$client.FlatLaf.internal.testing.ignore": true
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
 				add( new FormComponent( "javax.swing.JLabel" ) {
 					name: "treeRendererLabel"
 					"text": "Renderer:"
@@ -491,13 +561,16 @@ new FormModel {
 				"value": "cell 0 4 4 1"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
-				"$layoutConstraints": "hidemode 3"
+				"$layoutConstraints": "insets 8,hidemode 3"
 				"$columnConstraints": "[][fill][fill]"
 				"$rowConstraints": "[][]0[]0[]0[]0"
 			} ) {
 				name: "tableOptionsPanel"
 				"border": new javax.swing.border.TitledBorder( "JTable Control" )
 				"$client.FlatLaf.internal.testing.ignore": true
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
 				add( new FormComponent( "javax.swing.JLabel" ) {
 					name: "autoResizeModeLabel"
 					"text": "Auto resize mode:"