Button: support specifying button border width

CHANGELOG.md

@@ -14,6 +14,7 @@ FlatLaf Change Log
   pixels. On Windows, it is now 10 pixels. (issue #131)
 - ToolTip: Do not show empty tooltip component if tooltip text is an empty
   string. (issue #134)
+- Button: Support specifying button border width.
 
 
 ## 0.38

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

@@ -43,24 +43,24 @@ import com.formdev.flatlaf.util.DerivedColor;
  * Border for various components (e.g. {@link javax.swing.JTextField}).
  *
  * There is empty space around the component border, if Component.focusWidth is greater than zero,
- * which is used to paint focus border.
+ * which is used to paint outer focus border.
  *
- * Because there is empty space (if focus border is not painted),
+ * Because there is empty space (if outer focus border is not painted),
  * UI delegates that use this border (or subclasses) must invoke
  * {@link FlatUIUtils#paintParentBackground} to paint the empty space correctly.
  *
- * @uiDefault Component.focusWidth			int
+ * @uiDefault Component.focusWidth						int
- * @uiDefault Component.innerFocusWidth		int or float
+ * @uiDefault Component.innerFocusWidth					int or float
- * @uiDefault Component.focusColor			Color
+ * @uiDefault Component.focusColor						Color
- * @uiDefault Component.borderColor			Color
+ * @uiDefault Component.borderColor						Color
- * @uiDefault Component.disabledBorderColor	Color
+ * @uiDefault Component.disabledBorderColor				Color
- * @uiDefault Component.focusedBorderColor	Color
+ * @uiDefault Component.focusedBorderColor				Color
  *
- * @uiDefault Component.error.borderColor			Color
+ * @uiDefault Component.error.borderColor				Color
- * @uiDefault Component.error.focusedBorderColor	Color
+ * @uiDefault Component.error.focusedBorderColor		Color
- * @uiDefault Component.warning.borderColor			Color
+ * @uiDefault Component.warning.borderColor				Color
- * @uiDefault Component.warning.focusedBorderColor	Color
+ * @uiDefault Component.warning.focusedBorderColor		Color
- * @uiDefault Component.custom.borderColor			Color
+ * @uiDefault Component.custom.borderColor				Color
  *
  * @author Karl Tauber
  */
@@ -93,16 +93,18 @@ public class FlatBorder
 			float arc = isCellEditor ? 0 : scale( (float) getArc( c ) );
 			Color outlineColor = getOutlineColor( c );
 
+			// paint outer border
 			if( outlineColor != null || isFocused( c ) ) {
-				float innerFocusWidth = !(c instanceof JScrollPane)
+				float innerWidth = !(c instanceof JScrollPane)
-					? (outlineColor != null ? innerOutlineWidth : this.innerFocusWidth)
+					? (outlineColor != null ? innerOutlineWidth : innerFocusWidth)
 					: 0;
 
 				g2.setColor( (outlineColor != null) ? outlineColor : getFocusColor( c ) );
-				FlatUIUtils.paintComponentOuterBorder( g2, x, y, width, height, focusWidth,
+				FlatUIUtils.paintComponentOuterBorder( g2, x, y, width, height,
-					scale( (float) getLineWidth( c ) ) + scale( innerFocusWidth ), arc );
+					focusWidth, borderWidth + scale( innerWidth ), arc );
 			}
 
+			// paint border
 			g2.setPaint( (outlineColor != null) ? outlineColor : getBorderColor( c ) );
 			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, focusWidth, borderWidth, arc );
 		} finally {
@@ -110,6 +112,10 @@ public class FlatBorder
 		}
 	}
 
+	/**
+	 * Returns the outline color of the component border specified in client property
+	 * {@link FlatClientProperties#OUTLINE}.
+	 */
 	protected Color getOutlineColor( Component c ) {
 		if( !(c instanceof JComponent) )
 			return null;

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

@@ -42,6 +42,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.default.hoverBorderColor	Color	optional
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
+ * @uiDefault Button.borderWidth				int
  * @uiDefault Button.default.borderWidth		int
  * @uiDefault Button.toolbar.margin				Insets
  * @uiDefault Button.toolbar.spacingInsets		Insets
@@ -62,6 +63,7 @@ public class FlatButtonBorder
 	protected final Color defaultHoverBorderColor = UIManager.getColor( "Button.default.hoverBorderColor" );
 	protected final Color defaultFocusedBorderColor = UIManager.getColor( "Button.default.focusedBorderColor" );
 	protected final Color defaultFocusColor = UIManager.getColor( "Button.default.focusColor" );
+	protected final int borderWidth = UIManager.getInt( "Button.borderWidth" );
 	protected final int defaultBorderWidth = UIManager.getInt( "Button.default.borderWidth" );
 	protected final Insets toolbarMargin = UIManager.getInsets( "Button.toolbar.margin" );
 	protected final Insets toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
@@ -134,7 +136,7 @@ public class FlatButtonBorder
 
 	@Override
 	protected int getBorderWidth( Component c ) {
-		return FlatButtonUI.isDefaultButton( c ) ? defaultBorderWidth : super.getBorderWidth( c );
+		return FlatButtonUI.isDefaultButton( c ) ? defaultBorderWidth : borderWidth;
 	}
 
 	@Override

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

@@ -210,7 +210,7 @@ public class FlatUIUtils
 	 * 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 line thickness 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
@@ -219,6 +219,9 @@ public class FlatUIUtils
 	public static void paintComponentOuterBorder( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float lineWidth, float arc )
 	{
+		if( focusWidth + lineWidth == 0 )
+			return; // nothing to paint
+
 		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%
@@ -255,6 +258,7 @@ public class FlatUIUtils
 	 * <p>
 	 * The outside bounds of the painted border are
 	 * {@code x + focusWidth, y + focusWidth, width - (focusWidth * 2), height - (focusWidth * 2)}.
+	 * The line thickness of the painted border is {@code lineWidth}.
 	 * The given arc diameter refers to the painted rectangle (and not to {@code x,y,width,height}).
 	 *
 	 * @see #paintComponentOuterBorder
@@ -263,6 +267,9 @@ public class FlatUIUtils
 	public static void paintComponentBorder( Graphics2D g, int x, int y, int width, int height,
 		float focusWidth, float lineWidth, float arc )
 	{
+		if( lineWidth == 0 )
+			return; // nothing to paint
+
 		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%

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

@@ -135,6 +135,7 @@ Button.rollover=true
 Button.defaultButtonFollowsFocus=false
 [win]Button.defaultButtonFollowsFocus=true
 
+Button.borderWidth=1
 Button.default.borderWidth=1
 
 Button.toolbar.margin=3,3,3,3

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202.txt

@@ -65,6 +65,7 @@ Button.arc                     6
 Button.background              #4c5052    javax.swing.plaf.ColorUIResource [UI]
 Button.border                  [lazy] 1,1,1,1  false    com.formdev.flatlaf.ui.FlatButtonBorder [UI]
 Button.borderColor             #5e6060    javax.swing.plaf.ColorUIResource [UI]
+Button.borderWidth             1
 Button.darkShadow              #7e7e7e    javax.swing.plaf.ColorUIResource [UI]
 Button.default.background      #365880    javax.swing.plaf.ColorUIResource [UI]
 Button.default.boldText        true

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202.txt

@@ -65,6 +65,7 @@ Button.arc                     6
 Button.background              #ffffff    javax.swing.plaf.ColorUIResource [UI]
 Button.border                  [lazy] 1,1,1,1  false    com.formdev.flatlaf.ui.FlatButtonBorder [UI]
 Button.borderColor             #c4c4c4    javax.swing.plaf.ColorUIResource [UI]
+Button.borderWidth             1
 Button.darkShadow              #9e9e9e    javax.swing.plaf.ColorUIResource [UI]
 Button.default.background      #ffffff    javax.swing.plaf.ColorUIResource [UI]
 Button.default.borderColor     #4f9ee3    javax.swing.plaf.ColorUIResource [UI]

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

@@ -12,6 +12,7 @@ Button.arc
 Button.background
 Button.border
 Button.borderColor
+Button.borderWidth
 Button.darkShadow
 Button.default.background
 Button.default.boldText