From 7e27a59fe6614aa10d34669d2083a8c0b801b6f3 Mon Sep 17 00:00:00 2001
From: Tj Holowaychuk <tj@vision-media.ca>
Date: Fri, 29 Oct 2010 14:33:14 -0700
Subject: [PATCH] ClearRect() using save/restore instead of explicit
 set_operator call

---
 src/CanvasRenderingContext2d.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/CanvasRenderingContext2d.cc b/src/CanvasRenderingContext2d.cc
index b0979d4..27c62c0 100644
--- a/src/CanvasRenderingContext2d.cc
+++ b/src/CanvasRenderingContext2d.cc
@@ -801,10 +801,11 @@ Context2d::ClearRect(const Arguments &args) {
   if (0 == width || 0 == height) return Undefined();
   Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
   cairo_t *ctx = context->getContext();
-  cairo_set_operator(ctx, CAIRO_OPERATOR_CLEAR);
+  cairo_save(ctx);
   cairo_rectangle(ctx, x, y, width, height);
+  cairo_set_operator(ctx, CAIRO_OPERATOR_CLEAR);
   cairo_fill(ctx);
-  cairo_set_operator(ctx, CAIRO_OPERATOR_OVER);
+  cairo_restore(ctx);
   return Undefined();
 }