From 5f1919d867f8814af3bc0b9aefe7af55e116b203 Mon Sep 17 00:00:00 2001
From: Anatoly Spektor <aspektor@redhat.com>
Date: Wed, 8 Aug 2012 13:39:58 -0400
Subject: Cairo implementation for tracker widget drawRectangles() method.

---
 .../gtk/org/eclipse/swt/widgets/Tracker.java            | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Tracker.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Tracker.java
index af86c4f365..39c9cdd2a0 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Tracker.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Tracker.java	
@@ -12,6 +12,7 @@ package org.eclipse.swt.widgets;
 
 
 import org.eclipse.swt.*;
+import org.eclipse.swt.internal.cairo.Cairo;
 import org.eclipse.swt.internal.gtk.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.events.*;
@@ -311,7 +312,21 @@ void drawRectangles (Rectangle [] rects) {
 		window = gtk_widget_get_window (parent.paintHandle());
 	} 
 	if (window == 0) return;
-	//TODO: Use Cairo
+	if(OS.USE_CAIRO){
+		int /*long*/ cairo = OS.gdk_cairo_create(window);
+		if (cairo == 0) error (SWT.ERROR_NO_HANDLES);
+		Cairo.cairo_set_source_rgb(cairo, 1, 1, 1);
+		Cairo.cairo_set_line_width(cairo, 1);
+		Cairo.cairo_set_operator(cairo,Cairo.CAIRO_OPERATOR_DIFFERENCE);
+		Cairo.cairo_set_antialias(cairo, Cairo.CAIRO_ANTIALIAS_NONE);
+		for (int i=0; i<rects.length; i++) {
+		Rectangle rect = rects [i];
+		Cairo.cairo_rectangle (cairo, rect.x, rect.y, rect.width, rect.height);
+		Cairo.cairo_stroke(cairo);
+		}
+		Cairo.cairo_destroy(cairo);
+		return;
+	}
 	int /*long*/ gc = OS.gdk_gc_new (window);
 	if (gc == 0) return;
 	int /*long*/ colormap = OS.gdk_colormap_get_system ();
-- 
cgit