### Eclipse Workspace Patch 1.0
#P org.eclipse.swt
Index: Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder.java,v
retrieving revision 1.286
diff -u -r1.286 CTabFolder.java
--- Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder.java	24 Feb 2009 03:50:26 -0000	1.286
+++ Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder.java	31 Mar 2009 19:07:38 -0000
@@ -146,7 +146,11 @@
 	//a single cache is required. If that happens to not be true, cache simply becomes less effective,
 	//but we don't leak colours.
 	Color[] selectionHighlightGradientColorsCache = null;  //null is a legal value, check on access
-	
+	/* Colors for anti-aliasing */
+	Color selectedOuterColor = null;
+	Color selectedInnerColor = null;
+	Color tabAreaColor = null;
+
 	/* Unselected item appearance */
 	Image bgImage;
 	Color[] gradientColors;
@@ -309,6 +313,7 @@
 	selectionForeground = display.getSystemColor(SELECTION_FOREGROUND);
 	selectionBackground = display.getSystemColor(SELECTION_BACKGROUND);
 	borderColor = display.getSystemColor(BORDER1_COLOR);
+	createAntialiasColors();
 	updateTabHeight(false);
 	
 	initAccessible();
@@ -498,7 +503,7 @@
 	addListener(SWT.Selection, typedListener);
 	addListener(SWT.DefaultSelection, typedListener);
 }
-void antialias (int[] shape, RGB lineRGB, RGB innerRGB, RGB outerRGB, GC gc){
+void antialias (int[] shape, Color innerColor, Color outerColor, GC gc){
 	// Don't perform anti-aliasing on Mac and WPF because the platform
 	// already does it.  The simple style also does not require anti-aliasing.
 	if (simple) return;
@@ -508,7 +513,7 @@
 	if ("wpf".equals(platform)) return; //$NON-NLS-1$
 	// Don't perform anti-aliasing on low resolution displays
 	if (getDisplay().getDepth() < 15) return;
-	if (outerRGB != null) {
+	if (outerColor != null) {
 		int index = 0;
 		boolean left = true;
 		int oldY = onBottom ? 0 : getSize().y;
@@ -521,17 +526,10 @@
 			outer[index] = shape[index++] + (left ? -1 : +1);
 			outer[index] = shape[index++];
 		}
-		RGB from = lineRGB;
-		RGB to = outerRGB;
-		int red = from.red + 2*(to.red - from.red)/3;
-		int green = from.green + 2*(to.green - from.green)/3;
-		int blue = from.blue + 2*(to.blue - from.blue)/3;
-		Color color = new Color(getDisplay(), red, green, blue);
-		gc.setForeground(color);
+		gc.setForeground(outerColor);
 		gc.drawPolyline(outer);
-		color.dispose();
 	}
-	if (innerRGB != null) {
+	if (innerColor != null) {
 		int[] inner = new int[shape.length];
 		int index = 0;
 		boolean left = true;
@@ -544,15 +542,8 @@
 			inner[index] = shape[index++] + (left ? +1 : -1);
 			inner[index] = shape[index++];
 		}
-		RGB from = lineRGB;
-		RGB to = innerRGB;
-		int red = from.red + 2*(to.red - from.red)/3;
-		int green = from.green + 2*(to.green - from.green)/3;
-		int blue = from.blue + 2*(to.blue - from.blue)/3;
-		Color color = new Color(getDisplay(), red, green, blue);
-		gc.setForeground(color);
+		gc.setForeground(innerColor);
 		gc.drawPolyline(inner);
-		color.dispose();
 	}
 }
 /*
@@ -580,6 +571,47 @@
 		return new Rectangle (trimX, trimY, trimWidth, trimHeight);
 	}
 }
+void createAntialiasColors() {
+    disposeAntialiasColors();
+    RGB lineRGB = CTabFolder.borderColor.getRGB();
+    /* compute the selected color */
+    RGB innerRGB = selectionBackground.getRGB();
+    if (selectionBgImage != null || 
+	    (selectionGradientColors != null && selectionGradientColors.length > 1)) {
+	    innerRGB = null;
+    }
+    RGB outerRGB = getBackground().getRGB();		
+    if (bgImage != null || 
+	    (gradientColors != null && gradientColors.length > 1)) {
+	    outerRGB = null;
+    }
+    if (outerRGB != null) {
+	RGB from = lineRGB;
+	RGB to = outerRGB;
+	int red = from.red + 2*(to.red - from.red)/3;
+	int green = from.green + 2*(to.green - from.green)/3;
+	int blue = from.blue + 2*(to.blue - from.blue)/3;
+	selectedOuterColor = new Color(getDisplay(), red, green, blue);
+    }
+    if (innerRGB != null) {
+	RGB from = lineRGB;
+	RGB to = innerRGB;
+	int red = from.red + 2*(to.red - from.red)/3;
+	int green = from.green + 2*(to.green - from.green)/3;
+	int blue = from.blue + 2*(to.blue - from.blue)/3;
+	selectedInnerColor = new Color(getDisplay(), red, green, blue);
+    }
+    /* compute the tabArea color */
+    outerRGB = getParent().getBackground().getRGB();
+    if (outerRGB != null) {
+	RGB from = lineRGB;
+	RGB to = outerRGB;
+	int red = from.red + 2*(to.red - from.red)/3;
+	int green = from.green + 2*(to.green - from.green)/3;
+	int blue = from.blue + 2*(to.blue - from.blue)/3;
+	tabAreaColor = new Color(getDisplay(), red, green, blue);
+    }
+}
 void createItem (CTabItem item, int index) {
 	if (0 > index || index > getItemCount ())SWT.error (SWT.ERROR_INVALID_RANGE);
 	item.parent = this;
@@ -1163,8 +1195,7 @@
 	
 	// Draw border line
 	if (borderLeft > 0) {
-		RGB outside = getParent().getBackground().getRGB();
-		antialias(shape, borderColor.getRGB(), null, outside, gc);
+		antialias(shape, null, tabAreaColor, gc);
 		gc.setForeground(borderColor);
 		gc.drawPolyline(shape);
 	}	
@@ -1899,7 +1930,8 @@
 
 	selectionBackground = null;
 	selectionForeground = null;
-	disposeSelectionHighlightGradientColors();	
+	disposeSelectionHighlightGradientColors();
+	disposeAntialiasColors();
 }
 void onDragDetect(Event event) {
 	boolean consume = false;
@@ -2472,6 +2504,7 @@
 }
 public void setBackground (Color color) {
 	super.setBackground(color);
+	createAntialiasColors();
 	redraw();
 }
 /**
@@ -2624,6 +2657,11 @@
 	bgImage = image;
 	redraw();
 }
+public void setBackgroundImage(Image image) {
+	super.setBackgroundImage(image);
+	createAntialiasColors();
+	redraw();
+}
 /**
  * Toggle the visibility of the border
  * 
@@ -3299,6 +3337,7 @@
 	if (selectionBackground == color) return;
 	if (color == null) color = getDisplay().getSystemColor(SELECTION_BACKGROUND);
 	selectionBackground = color;
+	createAntialiasColors();
 	if (selectedIndex > -1) redraw();
 }
 /**
@@ -3524,6 +3563,7 @@
 		disposeSelectionHighlightGradientColors();
 	}
 	selectionBgImage = image;
+	createAntialiasColors();
 	if (selectedIndex > -1) redraw();
 }
 /**
@@ -3575,7 +3615,12 @@
 		selectionHighlightGradientColorsCache[i] = new Color(getDisplay(), red, green, blue);
 	}
 }
-
+void disposeAntialiasColors() {
+    if (tabAreaColor != null) tabAreaColor.dispose();
+    if (selectedInnerColor != null) selectedInnerColor.dispose();
+    if (selectedOuterColor != null) selectedOuterColor.dispose();
+    tabAreaColor = selectedInnerColor = selectedOuterColor = null;
+}
 void disposeSelectionHighlightGradientColors() {
 	if(selectionHighlightGradientColorsCache == null)
 		return;
Index: Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabItem.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabItem.java,v
retrieving revision 1.112
diff -u -r1.112 CTabItem.java
--- Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabItem.java	24 Feb 2009 03:50:26 -0000	1.112
+++ Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabItem.java	31 Mar 2009 19:07:39 -0000
@@ -357,17 +357,7 @@
 		for (int i = 0; i < shape.length/2; i++) {
 			if (shape[2*i + 1] == y + height + 1) shape[2*i + 1] -= 1;
 		}
-		RGB inside = parent.selectionBackground.getRGB();
-		if (parent.selectionBgImage != null || 
-		    (parent.selectionGradientColors != null && parent.selectionGradientColors.length > 1)) {
-		    inside = null;
-		}
-		RGB outside = parent.getBackground().getRGB();		
-		if (parent.bgImage != null || 
-		    (parent.gradientColors != null && parent.gradientColors.length > 1)) {
-		    outside = null;
-		}
-		parent.antialias(shape, CTabFolder.borderColor.getRGB(), inside, outside, gc);
+		parent.antialias(shape, parent.selectedInnerColor, parent.selectedOuterColor, gc);
 		gc.setForeground(CTabFolder.borderColor);
 		gc.drawPolyline(shape);