1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-clip-rule.js b/third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-clip-rule.js
new file mode 100644
index 0000000..e6a45ed
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-clip-rule.js
@@ -0,0 +1,69 @@
+description("Series of tests to ensure correct results of the winding rule.");
+
+
+var tmpimg = document.createElement('canvas');
+tmpimg.width = 200;
+tmpimg.height = 200;
+ctx = tmpimg.getContext('2d');
+
+// Create the image for blending test with images.
+var img = document.createElement('canvas');
+img.width = 100;
+img.height = 100;
+var imgCtx = img.getContext('2d');
+
+function pixelDataAtPoint()
+{
+  return ctx.getImageData(50, 50, 1, 1).data;
+}
+
+function checkResult(expectedColors, sigma) {
+    for (var i = 0; i < 4; i++)
+	    shouldBeCloseTo("pixelDataAtPoint()[" + i + "]", expectedColors[i], sigma);
+}
+
+// Execute test.
+function prepareTestScenario() {
+    debug('Testing default clip');
+    ctx.fillStyle = 'rgb(255,0,0)';
+    ctx.fillRect(0, 0, 100, 100);
+    ctx.fillStyle = 'rgb(0,255,0)';
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    ctx.clip();
+    ctx.beginPath();
+    ctx.fillRect(0, 0, 100, 100);
+    checkResult([0, 255, 0, 255], 5);                        
+    debug('');
+
+    debug('Testing nonzero clip');
+    ctx.fillStyle = 'rgb(255,0,0)';
+    ctx.fillRect(0, 0, 100, 100);
+    ctx.fillStyle = 'rgb(0,255,0)';
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    ctx.clip('nonzero');
+    ctx.beginPath();
+    ctx.fillRect(0, 0, 100, 100);
+    checkResult([0, 255, 0, 255], 5);
+    debug('');
+	
+    debug('Testing evenodd clip');
+    ctx.fillStyle = 'rgb(255,0,0)';
+    ctx.fillRect(0, 0, 100, 100);
+    ctx.fillStyle = 'rgb(0,255,0)';
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    ctx.clip('evenodd');
+    ctx.beginPath();
+    ctx.fillRect(0, 0, 100, 100);
+    checkResult([255, 0, 0, 255], 5);                        
+    debug('');
+
+}
+
+// Run test and allow variation of results.
+prepareTestScenario();