TabbedPane: support rounded underline selection and rounded card tabs

CHANGELOG.md

@@ -5,6 +5,7 @@ FlatLaf Change Log
 
 #### New features and improvements
 
+- TabbedPane: Support rounded underline selection and rounded card tabs.
 - Extras: Class `FlatSVGIcon` now uses [JSVG](https://github.com/weisJ/jsvg)
   library (instead of svgSalamander) for rendering. JSVG provides improved SVG
   rendering and uses less memory compared to svgSalamander. (PR #684)

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

@@ -49,6 +49,7 @@ import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
 import java.awt.event.MouseMotionListener;
 import java.awt.event.MouseWheelEvent;
+import java.awt.geom.Area;
 import java.awt.geom.Path2D;
 import java.awt.geom.Rectangle2D;
 import java.beans.PropertyChangeEvent;
@@ -143,6 +144,11 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TabbedPane.tabHeight						int
  * @uiDefault TabbedPane.tabSelectionHeight				int
  * @uiDefault TabbedPane.cardTabSelectionHeight			int
+ * @uiDefault TabbedPane.tabArc							int
+ * @uiDefault TabbedPane.tabSelectionArc				int
+ * @uiDefault TabbedPane.cardTabArc						int
+ * @uiDefault TabbedPane.selectedInsets					Insets
+ * @uiDefault TabbedPane.tabSelectionInsets				Insets
  * @uiDefault TabbedPane.contentSeparatorHeight			int
  * @uiDefault TabbedPane.showTabSeparators				boolean
  * @uiDefault TabbedPane.tabSeparatorsFullHeight		boolean
@@ -219,6 +225,11 @@ public class FlatTabbedPaneUI
 	@Styleable protected int tabHeight;
 	@Styleable protected int tabSelectionHeight;
 	/** @since 2 */ @Styleable protected int cardTabSelectionHeight;
+	/** @since 3.2 */ @Styleable protected int tabArc;
+	/** @since 3.2 */ @Styleable protected int tabSelectionArc;
+	/** @since 3.2 */ @Styleable protected int cardTabArc;
+	/** @since 3.2 */ @Styleable protected Insets selectedInsets;
+	/** @since 3.2 */ @Styleable protected Insets tabSelectionInsets;
 	@Styleable protected int contentSeparatorHeight;
 	@Styleable protected boolean showTabSeparators;
 	@Styleable protected boolean tabSeparatorsFullHeight;
@@ -344,6 +355,11 @@ public class FlatTabbedPaneUI
 		tabHeight = UIManager.getInt( "TabbedPane.tabHeight" );
 		tabSelectionHeight = UIManager.getInt( "TabbedPane.tabSelectionHeight" );
 		cardTabSelectionHeight = UIManager.getInt( "TabbedPane.cardTabSelectionHeight" );
+		tabArc = UIManager.getInt( "TabbedPane.tabArc" );
+		tabSelectionArc = UIManager.getInt( "TabbedPane.tabSelectionArc" );
+		cardTabArc = UIManager.getInt( "TabbedPane.cardTabArc" );
+		selectedInsets = UIManager.getInsets( "TabbedPane.selectedInsets" );
+		tabSelectionInsets = UIManager.getInsets( "TabbedPane.tabSelectionInsets" );
 		contentSeparatorHeight = UIManager.getInt( "TabbedPane.contentSeparatorHeight" );
 		showTabSeparators = UIManager.getBoolean( "TabbedPane.showTabSeparators" );
 		tabSeparatorsFullHeight = UIManager.getBoolean( "TabbedPane.tabSeparatorsFullHeight" );
@@ -1184,10 +1200,41 @@ public class FlatTabbedPaneUI
 	protected void paintTabBackground( Graphics g, int tabPlacement, int tabIndex,
 		int x, int y, int w, int h, boolean isSelected )
 	{
+		boolean isCard = (getTabType() == TAB_TYPE_CARD);
+
+		// fill whole tab background if tab is rounded or has insets
+		if( (!isCard && tabArc > 0) ||
+			(isCard && cardTabArc > 0) ||
+			(!isCard && selectedInsets != null &&
+			 (selectedInsets.top != 0 || selectedInsets.left != 0 ||
+			  selectedInsets.bottom != 0 || selectedInsets.right != 0)) )
+		{
+			Color background = tabPane.getBackgroundAt( tabIndex );
+			g.setColor( FlatUIUtils.deriveColor( background, tabPane.getBackground() ) );
+			g.fillRect( x, y, w, h );
+		}
+
+		// apply insets
+		if( !isCard && selectedInsets != null ) {
+			Insets insets = new Insets( 0, 0, 0, 0 );
+			rotateInsets( selectedInsets, insets, tabPane.getTabPlacement() );
+
+			x += scale( insets.left );
+			y += scale( insets.top );
+			w -= scale( insets.left + insets.right );
+			h -= scale( insets.top + insets.bottom );
+		}
+
 		// paint tab background
 		Color background = getTabBackground( tabPlacement, tabIndex, isSelected );
 		g.setColor( FlatUIUtils.deriveColor( background, tabPane.getBackground() ) );
-		g.fillRect( x, y, w, h );
+		if( !isCard && tabArc > 0 ) {
+			float arc = scale( (float) tabArc ) / 2f;
+			FlatUIUtils.paintSelection( (Graphics2D) g, x, y, w, h, null, arc, arc, arc, arc, 0 );
+		} else if( isCard && cardTabArc > 0 )
+			((Graphics2D)g).fill( createCardTabOuterPath( tabPlacement, x, y, w, h ) );
+		else
+			g.fillRect( x, y, w, h );
 	}
 
 	/** @since 2 */
@@ -1241,42 +1288,38 @@ public class FlatTabbedPaneUI
 	protected void paintCardTabBorder( Graphics g, int tabPlacement, int tabIndex, int x, int y, int w, int h ) {
 		Graphics2D g2 = (Graphics2D) g;
 
-		float borderWidth = scale( (float) contentSeparatorHeight );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		path.append( createCardTabOuterPath( tabPlacement, x, y, w, h ), false );
+		path.append( createCardTabInnerPath( tabPlacement, x, y, w, h ), false );
+
 		g.setColor( (tabSeparatorColor != null) ? tabSeparatorColor : contentAreaColor );
+		g2.fill( path );
+	}
+
+	/** @since 3.2 */
+	protected Shape createCardTabOuterPath( int tabPlacement, int x, int y, int w, int h ) {
+		float arc = scale( (float) cardTabArc ) / 2f;
 
 		switch( tabPlacement ) {
 			default:
-			case TOP:
-			case BOTTOM:
-				// paint left and right tab border
-				g2.fill( new Rectangle2D.Float( x, y, borderWidth, h ) );
-				g2.fill( new Rectangle2D.Float( x + w - borderWidth, y, borderWidth, h ) );
-				break;
-			case LEFT:
-			case RIGHT:
-				// paint top and bottom tab border
-				g2.fill( new Rectangle2D.Float( x, y, w, borderWidth ) );
-				g2.fill( new Rectangle2D.Float( x, y + h - borderWidth, w, borderWidth ) );
-				break;
+			case TOP:    return FlatUIUtils.createRoundRectanglePath( x, y, w, h, arc, arc, 0, 0 );
+			case BOTTOM: return FlatUIUtils.createRoundRectanglePath( x, y, w, h, 0, 0, arc, arc );
+			case LEFT:   return FlatUIUtils.createRoundRectanglePath( x, y, w, h, arc, 0, arc, 0 );
+			case RIGHT:  return FlatUIUtils.createRoundRectanglePath( x, y, w, h, 0, arc, 0, arc );
 		}
+	}
 
-		if( cardTabSelectionHeight <= 0 ) {
-			// if there is no tab selection indicator, paint a top border as well
-			switch( tabPlacement ) {
-				default:
-				case TOP:
-					g2.fill( new Rectangle2D.Float( x, y, w, borderWidth ) );
-					break;
-				case BOTTOM:
-					g2.fill( new Rectangle2D.Float( x, y + h - borderWidth, w, borderWidth ) );
-					break;
-				case LEFT:
-					g2.fill( new Rectangle2D.Float( x, y, borderWidth, h ) );
-					break;
-				case RIGHT:
-					g2.fill( new Rectangle2D.Float( x + w - borderWidth, y, borderWidth, h ) );
-					break;
-			}
+	/** @since 3.2 */
+	protected Shape createCardTabInnerPath( int tabPlacement, int x, int y, int w, int h ) {
+		float bw = scale( (float) contentSeparatorHeight );
+		float arc = (scale( (float) cardTabArc ) / 2f) - bw;
+
+		switch( tabPlacement ) {
+			default:
+			case TOP:    return FlatUIUtils.createRoundRectanglePath( x + bw, y + bw, w - (bw * 2), h - bw,       arc, arc, 0, 0 );
+			case BOTTOM: return FlatUIUtils.createRoundRectanglePath( x + bw, y,      w - (bw * 2), h - bw,       0, 0, arc, arc );
+			case LEFT:   return FlatUIUtils.createRoundRectanglePath( x + bw, y + bw, w - bw,       h - (bw * 2), arc, 0, arc, 0 );
+			case RIGHT:  return FlatUIUtils.createRoundRectanglePath( x,      y + bw, w - bw,       h - (bw * 2), 0, arc, 0, arc );
 		}
 	}
 
@@ -1324,38 +1367,62 @@ public class FlatTabbedPaneUI
 			? (isTabbedPaneOrChildFocused() ? underlineColor : inactiveUnderlineColor)
 			: disabledUnderlineColor );
 
-		// paint underline selection
-		boolean atBottom = (getTabType() != TAB_TYPE_CARD);
+		boolean isCard = (getTabType() == TAB_TYPE_CARD);
+		boolean atBottom = !isCard;
 		Insets contentInsets = atBottom
 			? ((!rotateTabRuns && runCount > 1 && !isScrollTabLayout() && getRunForTab( tabPane.getTabCount(), tabIndex ) > 0)
 				? new Insets( 0, 0, 0, 0 )
 				: getContentBorderInsets( tabPlacement ))
 			: null;
 
-		int tabSelectionHeight = scale( atBottom ? this.tabSelectionHeight : cardTabSelectionHeight );
-		int sx, sy;
+		int tabSelectionHeight = scale( isCard ? cardTabSelectionHeight : this.tabSelectionHeight );
+		float arc = scale( (float) (isCard ? cardTabArc : tabSelectionArc) ) / 2f;
+		int sx = x, sy = y, sw = w, sh = h;
 		switch( tabPlacement ) {
 			case TOP:
 			default:
 				sy = atBottom ? (y + h + contentInsets.top - tabSelectionHeight) : y;
-				g.fillRect( x, sy, w, tabSelectionHeight );
+				sh = tabSelectionHeight;
 				break;
 
 			case BOTTOM:
 				sy = atBottom ? (y - contentInsets.bottom) : (y + h - tabSelectionHeight);
-				g.fillRect( x, sy, w, tabSelectionHeight );
+				sh = tabSelectionHeight;
 				break;
 
 			case LEFT:
 				sx = atBottom ? (x + w + contentInsets.left - tabSelectionHeight) : x;
-				g.fillRect( sx, y, tabSelectionHeight, h );
+				sw = tabSelectionHeight;
 				break;
 
 			case RIGHT:
 				sx = atBottom ? (x - contentInsets.right) : (x + w - tabSelectionHeight);
-				g.fillRect( sx, y, tabSelectionHeight, h );
+				sw = tabSelectionHeight;
 				break;
 		}
+
+		// apply insets
+		if( !isCard && tabSelectionInsets != null ) {
+			Insets insets = new Insets( 0, 0, 0, 0 );
+			rotateInsets( tabSelectionInsets, insets, tabPane.getTabPlacement() );
+
+			sx += scale( insets.left );
+			sy += scale( insets.top );
+			sw -= scale( insets.left + insets.right );
+			sh -= scale( insets.top + insets.bottom );
+		}
+
+		// paint underline selection
+		if( arc <= 0 )
+			g.fillRect( sx, sy, sw, sh );
+		else {
+			if( isCard ) {
+				Area area = new Area( createCardTabOuterPath( tabPlacement, x, y, w, h ) );
+				area.intersect( new Area( new Rectangle2D.Float( sx, sy, sw, sh ) ) );
+				((Graphics2D)g).fill( area );
+			} else
+				FlatUIUtils.paintSelection( (Graphics2D) g, sx, sy, sw, sh, null, arc, arc, arc, arc, 0 );
+		}
 	}
 
 	/** @since 2.2 */

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

@@ -671,7 +671,12 @@ SplitPaneDivider.gripGap = 2
 
 TabbedPane.tabHeight = 32
 TabbedPane.tabSelectionHeight = 3
-TabbedPane.cardTabSelectionHeight = 2
+TabbedPane.cardTabSelectionHeight = 3
+TabbedPane.tabArc = 0
+TabbedPane.tabSelectionArc = 0
+TabbedPane.cardTabArc = 12
+TabbedPane.selectedInsets = 0,0,0,0
+TabbedPane.tabSelectionInsets = 0,0,0,0
 TabbedPane.contentSeparatorHeight = 1
 TabbedPane.showTabSeparators = false
 TabbedPane.tabSeparatorsFullHeight = false

flatlaf-core/src/main/resources/com/formdev/flatlaf/themes/FlatMacDarkLaf.properties

@@ -261,6 +261,15 @@ Spinner.buttonPressedArrowColor = lighten($Spinner.buttonArrowColor,20%,derived
 Spinner.buttonSeparatorWidth = 0
 
 
+#---- TabbedPane ----
+
+TabbedPane.tabSelectionHeight = 4
+TabbedPane.cardTabSelectionHeight = 4
+TabbedPane.tabArc = $Button.arc
+TabbedPane.tabSelectionArc = $TabbedPane.tabSelectionHeight
+TabbedPane.cardTabArc = $Button.arc
+
+
 #---- TextArea ---
 
 TextArea.disabledBackground = @disabledComponentBackground

flatlaf-core/src/main/resources/com/formdev/flatlaf/themes/FlatMacLightLaf.properties

@@ -260,6 +260,15 @@ Spinner.buttonHoverArrowColor = lighten($Spinner.buttonArrowColor,20%,derived no
 Spinner.buttonPressedArrowColor = lighten($Spinner.buttonArrowColor,30%,derived noAutoInverse)
 
 
+#---- TabbedPane ----
+
+TabbedPane.tabSelectionHeight = 4
+TabbedPane.cardTabSelectionHeight = 4
+TabbedPane.tabArc = $Button.arc
+TabbedPane.tabSelectionArc = $TabbedPane.tabSelectionHeight
+TabbedPane.cardTabArc = $Button.arc
+
+
 #---- TextArea ---
 
 TextArea.disabledBackground = @disabledComponentBackground

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

@@ -732,6 +732,11 @@ public class TestFlatStyleableInfo
 			"tabHeight", int.class,
 			"tabSelectionHeight", int.class,
 			"cardTabSelectionHeight", int.class,
+			"tabArc", int.class,
+			"tabSelectionArc", int.class,
+			"cardTabArc", int.class,
+			"selectedInsets", Insets.class,
+			"tabSelectionInsets", Insets.class,
 			"contentSeparatorHeight", int.class,
 			"showTabSeparators", boolean.class,
 			"tabSeparatorsFullHeight", boolean.class,

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

@@ -738,6 +738,11 @@ public class TestFlatStyleableValue
 		testInteger( c, ui, "tabHeight", 123 );
 		testInteger( c, ui, "tabSelectionHeight", 123 );
 		testInteger( c, ui, "cardTabSelectionHeight", 123 );
+		testInteger( c, ui, "tabArc", 123 );
+		testInteger( c, ui, "tabSelectionArc", 123 );
+		testInteger( c, ui, "cardTabArc", 123 );
+		testInsets( c, ui, "selectedInsets", 1,2,3,4 );
+		testInsets( c, ui, "tabSelectionInsets", 1,2,3,4 );
 		testInteger( c, ui, "contentSeparatorHeight", 123 );
 		testBoolean( c, ui, "showTabSeparators", false );
 		testBoolean( c, ui, "tabSeparatorsFullHeight", false );

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

@@ -917,6 +917,11 @@ public class TestFlatStyling
 		ui.applyStyle( "tabHeight: 30" );
 		ui.applyStyle( "tabSelectionHeight: 3" );
 		ui.applyStyle( "cardTabSelectionHeight: 2" );
+		ui.applyStyle( "tabArc: 3" );
+		ui.applyStyle( "tabSelectionArc: 4" );
+		ui.applyStyle( "cardTabArc: 5" );
+		ui.applyStyle( "selectedInsets: 1,2,3,4" );
+		ui.applyStyle( "tabSelectionInsets: 1,2,3,4" );
 		ui.applyStyle( "contentSeparatorHeight: 1" );
 		ui.applyStyle( "showTabSeparators: false" );
 		ui.applyStyle( "tabSeparatorsFullHeight: false" );

flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0.txt

@@ -1037,7 +1037,8 @@ TabbedPane.buttonArc           6
 TabbedPane.buttonHoverBackground #303234  HSL 210   4  20    com.formdev.flatlaf.util.DerivedColor [UI]    darken(5%)
 TabbedPane.buttonInsets        2,1,2,1    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.buttonPressedBackground #282a2c  HSL 210   5  16    com.formdev.flatlaf.util.DerivedColor [UI]    darken(8%)
-TabbedPane.cardTabSelectionHeight 2
+TabbedPane.cardTabArc          12
+TabbedPane.cardTabSelectionHeight 3
 TabbedPane.closeArc            4
 TabbedPane.closeCrossFilledSize 7.5
 TabbedPane.closeCrossLineWidth 1
@@ -1068,18 +1069,22 @@ TabbedPane.labelShift          1
 TabbedPane.light               #2f3031  HSL 210   2  19    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.scrollButtonsPlacement both
 TabbedPane.scrollButtonsPolicy asNeededSingle
+TabbedPane.selectedInsets      0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #3c3f41  HSL 204   4  25    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.showTabSeparators   false
 TabbedPane.tabAlignment        center
+TabbedPane.tabArc              0
 TabbedPane.tabAreaAlignment    leading
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
+TabbedPane.tabSelectionArc     0
 TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSelectionInsets  0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabType             underlined
 TabbedPane.tabWidthMode        preferred

flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0.txt

@@ -1042,7 +1042,8 @@ TabbedPane.buttonArc           6
 TabbedPane.buttonHoverBackground #e0e0e0  HSL   0   0  88    com.formdev.flatlaf.util.DerivedColor [UI]    darken(7% autoInverse)
 TabbedPane.buttonInsets        2,1,2,1    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.buttonPressedBackground #d9d9d9  HSL   0   0  85    com.formdev.flatlaf.util.DerivedColor [UI]    darken(10% autoInverse)
-TabbedPane.cardTabSelectionHeight 2
+TabbedPane.cardTabArc          12
+TabbedPane.cardTabSelectionHeight 3
 TabbedPane.closeArc            4
 TabbedPane.closeCrossFilledSize 7.5
 TabbedPane.closeCrossLineWidth 1
@@ -1073,18 +1074,22 @@ TabbedPane.labelShift          1
 TabbedPane.light               #e1e1e1  HSL   0   0  88    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.scrollButtonsPlacement both
 TabbedPane.scrollButtonsPolicy asNeededSingle
+TabbedPane.selectedInsets      0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #f2f2f2  HSL   0   0  95    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.showTabSeparators   false
 TabbedPane.tabAlignment        center
+TabbedPane.tabArc              0
 TabbedPane.tabAreaAlignment    leading
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
+TabbedPane.tabSelectionArc     0
 TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSelectionInsets  0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabType             underlined
 TabbedPane.tabWidthMode        preferred

flatlaf-testing/dumps/uidefaults/FlatMacDarkLaf_1.8.0.txt

@@ -1047,7 +1047,8 @@ TabbedPane.buttonArc           12
 TabbedPane.buttonHoverBackground #111111  HSL   0   0   7    com.formdev.flatlaf.util.DerivedColor [UI]    darken(5%)
 TabbedPane.buttonInsets        2,1,2,1    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.buttonPressedBackground #0a0a0a  HSL   0   0   4    com.formdev.flatlaf.util.DerivedColor [UI]    darken(8%)
-TabbedPane.cardTabSelectionHeight 2
+TabbedPane.cardTabArc          12
+TabbedPane.cardTabSelectionHeight 4
 TabbedPane.closeArc            4
 TabbedPane.closeCrossFilledSize 7.5
 TabbedPane.closeCrossLineWidth 1
@@ -1078,18 +1079,22 @@ TabbedPane.labelShift          1
 TabbedPane.light               #cccccc19  10%  HSLA   0   0  80 10    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.scrollButtonsPlacement both
 TabbedPane.scrollButtonsPolicy asNeededSingle
+TabbedPane.selectedInsets      0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #1e1e1e  HSL   0   0  12    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.showTabSeparators   false
 TabbedPane.tabAlignment        center
+TabbedPane.tabArc              12
 TabbedPane.tabAreaAlignment    leading
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
-TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSelectionArc     4
+TabbedPane.tabSelectionHeight  4
+TabbedPane.tabSelectionInsets  0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabType             underlined
 TabbedPane.tabWidthMode        preferred

flatlaf-testing/dumps/uidefaults/FlatMacLightLaf_1.8.0.txt

@@ -1051,7 +1051,8 @@ TabbedPane.buttonArc           12
 TabbedPane.buttonHoverBackground #e4e4e4  HSL   0   0  89    com.formdev.flatlaf.util.DerivedColor [UI]    darken(7% autoInverse)
 TabbedPane.buttonInsets        2,1,2,1    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.buttonPressedBackground #dddddd  HSL   0   0  87    com.formdev.flatlaf.util.DerivedColor [UI]    darken(10% autoInverse)
-TabbedPane.cardTabSelectionHeight 2
+TabbedPane.cardTabArc          12
+TabbedPane.cardTabSelectionHeight 4
 TabbedPane.closeArc            4
 TabbedPane.closeCrossFilledSize 7.5
 TabbedPane.closeCrossLineWidth 1
@@ -1082,18 +1083,22 @@ TabbedPane.labelShift          1
 TabbedPane.light               #1f1f1f26  15%  HSLA   0   0  12 15    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.scrollButtonsPlacement both
 TabbedPane.scrollButtonsPolicy asNeededSingle
+TabbedPane.selectedInsets      0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #f6f6f6  HSL   0   0  96    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.showTabSeparators   false
 TabbedPane.tabAlignment        center
+TabbedPane.tabArc              12
 TabbedPane.tabAreaAlignment    leading
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
-TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSelectionArc     4
+TabbedPane.tabSelectionHeight  4
+TabbedPane.tabSelectionInsets  0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabType             underlined
 TabbedPane.tabWidthMode        preferred

flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0.txt

@@ -1068,7 +1068,8 @@ TabbedPane.buttonArc           6
 TabbedPane.buttonHoverBackground #ffff00  HSL  60 100  50    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.buttonInsets        2,1,2,1    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.buttonPressedBackground #ffc800  HSL  47 100  50    javax.swing.plaf.ColorUIResource [UI]
-TabbedPane.cardTabSelectionHeight 2
+TabbedPane.cardTabArc          12
+TabbedPane.cardTabSelectionHeight 3
 TabbedPane.closeArc            999
 TabbedPane.closeCrossFilledSize 6.5
 TabbedPane.closeCrossLineWidth 2
@@ -1103,18 +1104,22 @@ TabbedPane.scrollButtonsPlacement both
 TabbedPane.scrollButtonsPolicy asNeededSingle
 TabbedPane.selectedBackground  #00ff00  HSL 120 100  50    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.selectedForeground  #0000ff  HSL 240 100  50    javax.swing.plaf.ColorUIResource [UI]
+TabbedPane.selectedInsets      0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #ccffcc  HSL 120 100  90    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.showTabSeparators   false
 TabbedPane.tabAlignment        center
+TabbedPane.tabArc              0
 TabbedPane.tabAreaAlignment    leading
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
+TabbedPane.tabSelectionArc     0
 TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSelectionInsets  0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabSeparatorColor   #0000ff  HSL 240 100  50    javax.swing.plaf.ColorUIResource [UI]
 TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabType             underlined

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt

@@ -831,6 +831,7 @@ TabbedPane.buttonArc
 TabbedPane.buttonHoverBackground
 TabbedPane.buttonInsets
 TabbedPane.buttonPressedBackground
+TabbedPane.cardTabArc
 TabbedPane.cardTabSelectionHeight
 TabbedPane.closeArc
 TabbedPane.closeCrossFilledSize
@@ -868,18 +869,22 @@ TabbedPane.scrollButtonsPlacement
 TabbedPane.scrollButtonsPolicy
 TabbedPane.selectedBackground
 TabbedPane.selectedForeground
+TabbedPane.selectedInsets
 TabbedPane.selectedLabelShift
 TabbedPane.selectedTabPadInsets
 TabbedPane.selectionFollowsFocus
 TabbedPane.shadow
 TabbedPane.showTabSeparators
 TabbedPane.tabAlignment
+TabbedPane.tabArc
 TabbedPane.tabAreaAlignment
 TabbedPane.tabAreaInsets
 TabbedPane.tabHeight
 TabbedPane.tabInsets
 TabbedPane.tabRunOverlay
+TabbedPane.tabSelectionArc
 TabbedPane.tabSelectionHeight
+TabbedPane.tabSelectionInsets
 TabbedPane.tabSeparatorColor
 TabbedPane.tabSeparatorsFullHeight
 TabbedPane.tabType