From 884715c153c8d6718c93d429252610ee864f2045 Mon Sep 17 00:00:00 2001
From: Tj Holowaychuk <tj@vision-media.ca>
Date: Tue, 5 Oct 2010 14:50:03 -0700
Subject: [PATCH] rect optimizations

---
 src/context2d.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/context2d.cc b/src/context2d.cc
index f92f072..37d5b9e 100644
--- a/src/context2d.cc
+++ b/src/context2d.cc
@@ -613,6 +613,7 @@ Handle<Value>
 Context2d::FillRect(const Arguments &args) {
   HandleScope scope;
   RECT_ARGS;
+  if (0 == width || 0 == height) return Undefined();
   Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
   cairo_t *ctx = context->getContext();
   cairo_rectangle(ctx, x, y, width, height);
@@ -629,6 +630,7 @@ Handle<Value>
 Context2d::StrokeRect(const Arguments &args) {
   HandleScope scope;
   RECT_ARGS;
+  if (0 == width && 0 == height) return Undefined();
   Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
   cairo_t *ctx = context->getContext();
   cairo_rectangle(ctx, x, y, width, height);
@@ -645,6 +647,7 @@ Handle<Value>
 Context2d::ClearRect(const Arguments &args) {
   HandleScope scope;
   RECT_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);