Remove 2px chamfer from simple CTabFolder tab corners to produce fully square tabs

Relates to #3150

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: vogella

bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolderRenderer.java

@@ -70,21 +70,21 @@ public class CTabFolderRenderer {
 	static final int[] BOTTOM_LEFT_CORNER = new int[] {0,-6, 1,-5, 1,-4, 4,-1, 5,-1, 6,0};
 	static final int[] BOTTOM_RIGHT_CORNER = new int[] {-6,0, -5,-1, -4,-1, -1,-4, -1,-5, 0,-6};
 
-	static final int[] SIMPLE_TOP_LEFT_CORNER = new int[] {0,2, 1,1, 2,0};
-	static final int[] SIMPLE_TOP_RIGHT_CORNER = new int[] {-2,0, -1,1, 0,2};
-	static final int[] SIMPLE_BOTTOM_LEFT_CORNER = new int[] {0,-2, 1,-1, 2,0};
-	static final int[] SIMPLE_BOTTOM_RIGHT_CORNER = new int[] {-2,0, -1,-1, 0,-2};
+	static final int[] SIMPLE_TOP_LEFT_CORNER = new int[] {0,0};
+	static final int[] SIMPLE_TOP_RIGHT_CORNER = new int[] {0,0};
+	static final int[] SIMPLE_BOTTOM_LEFT_CORNER = new int[] {0,0};
+	static final int[] SIMPLE_BOTTOM_RIGHT_CORNER = new int[] {0,0};
 	static final int[] SIMPLE_UNSELECTED_INNER_CORNER = new int[] {0,0};
 
 	static final int[] TOP_LEFT_CORNER_BORDERLESS = new int[] {0,6, 1,5, 1,4, 4,1, 5,1, 6,0};
 	static final int[] TOP_RIGHT_CORNER_BORDERLESS = new int[] {-7,0, -6,1, -5,1, -2,4, -2,5, -1,6};
 	static final int[] BOTTOM_LEFT_CORNER_BORDERLESS = new int[] {0,-6, 1,-6, 1,-5, 2,-4, 4,-2, 5,-1, 6,-1, 6,0};
 	static final int[] BOTTOM_RIGHT_CORNER_BORDERLESS = new int[] {-7,0, -7,-1, -6,-1, -5,-2, -3,-4, -2,-5, -2,-6, -1,-6};
 
-	static final int[] SIMPLE_TOP_LEFT_CORNER_BORDERLESS = new int[] {0,2, 1,1, 2,0};
-	static final int[] SIMPLE_TOP_RIGHT_CORNER_BORDERLESS= new int[] {-3,0, -2,1, -1,2};
-	static final int[] SIMPLE_BOTTOM_LEFT_CORNER_BORDERLESS = new int[] {0,-3, 1,-2, 2,-1, 3,0};
-	static final int[] SIMPLE_BOTTOM_RIGHT_CORNER_BORDERLESS = new int[] {-4,0, -3,-1, -2,-2, -1,-3};
+	static final int[] SIMPLE_TOP_LEFT_CORNER_BORDERLESS = new int[] {0,0};
+	static final int[] SIMPLE_TOP_RIGHT_CORNER_BORDERLESS= new int[] {0,0};
+	static final int[] SIMPLE_BOTTOM_LEFT_CORNER_BORDERLESS = new int[] {0,0};
+	static final int[] SIMPLE_BOTTOM_RIGHT_CORNER_BORDERLESS = new int[] {0,0};
 
 	static final RGB CLOSE_FILL = new RGB(240, 64, 64);