Fine Tuned Drop Shadow

 - Made Drop Shadow a bit Softer
 - RectangleDropShadow correctly considers the corner radius for the
   start of the shadow

Author: azoitl

org.eclipse.draw2d/src/org/eclipse/draw2d/shadows/EllipseDropShadowBorder.java

@@ -44,9 +44,9 @@ protected void paintDropShadow(Graphics graphics, Rectangle shadowRect, int size
 		for (int i = 0; i < size; i++) {
 			final double progress = (double) i / size;
 			graphics.setAlpha(calcAlphaValue(progress));
-			graphics.drawArc(r, 270, 90);
 			r.x++;
 			r.y++;
+			graphics.drawArc(r, 270, 90);
 		}
 	}
 

org.eclipse.draw2d/src/org/eclipse/draw2d/shadows/RectangleDropShadowBorder.java

@@ -64,13 +64,13 @@ public RectangleDropShadowBorder(int cornerRadius) {
 
 	@Override
 	protected void paintDropShadow(final Graphics graphics, final Rectangle shadowRect, final int size) {
-		int bottomXStart = shadowRect.x + 1;
-		int bottomY = shadowRect.y + 1 + shadowRect.height;
-		final int bottomXEnd = shadowRect.x + shadowRect.width + 1 - cornerStartRadius;
+		int bottomXStart = shadowRect.x + cornerStartRadius;
+		int bottomY = shadowRect.y + 2 + shadowRect.height;
+		final int bottomXEnd = shadowRect.x + shadowRect.width + 2 - cornerStartRadius;
 
-		int rightX = shadowRect.x + shadowRect.width + 1;
-		int rightYStart = shadowRect.y + 1;
-		final int rightYEnd = shadowRect.y + shadowRect.height + 1 - cornerStartRadius;
+		int rightX = shadowRect.x + shadowRect.width + 2;
+		int rightYStart = shadowRect.y + cornerStartRadius;
+		final int rightYEnd = shadowRect.y + shadowRect.height + 2 - cornerStartRadius;
 		int cornerDiameter = 2 * cornerStartRadius;
 
 		for (int i = 0; i <= size; i++) {