61 lines
1.8 KiB
HTML
61 lines
1.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<script src="../../resources/js-test-pre.js"></script>
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</head>
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<body>
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<canvas id="myCanvas" width="400" height="400"></canvas>
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<script>
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description("Test to verify the shadow of an image drawn on canvas");
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// Create an auxiliary canvas to draw to and create an image from.
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// This is done instead of simply loading an image from the file system
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// because that would throw a SECURITY_ERR DOM Exception.
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var aCanvas = document.createElement('canvas');
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aCanvas.setAttribute('width', '200');
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aCanvas.setAttribute('height', '200');
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var aCtx = aCanvas.getContext('2d');
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// Draw a rectangle on the same canvas.
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aCtx.fillStyle = 'rgb(0, 255, 0)';
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aCtx.rect(0, 0, 100, 50);
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aCtx.fill();
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// Create the image object to be drawn on the master canvas.
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var img = new Image();
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img.onload = draw;
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img.src = aCanvas.toDataURL();
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function draw()
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{
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var canvas = document.getElementById('myCanvas');
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var ctx = canvas.getContext('2d');
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ctx.shadowOffsetX = 200;
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ctx.shadowOffsetY = 50;
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ctx.fillStyle = ctx.createPattern(img, 'repeat-x');
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ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
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ctx.fillRect(0, 0, 200, 200);
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var imageData = ctx.getImageData(10, 10, 1, 1);
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imgdata = imageData.data;
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shouldBe("imgdata[0]", "0");
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shouldBe("imgdata[1]", "255");
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shouldBe("imgdata[2]", "0");
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imageData = ctx.getImageData(290, 60, 1, 1);
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imgdata = imageData.data;
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shouldBe("imgdata[0]", "255");
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shouldBe("imgdata[1]", "0");
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shouldBe("imgdata[2]", "0");
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imageData = ctx.getImageData(90, 60, 1, 1);
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imgdata = imageData.data;
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shouldBe("imgdata[0]", "0");
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shouldBe("imgdata[1]", "0");
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shouldBe("imgdata[2]", "0");
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}
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</script>
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<script src="../../resources/js-test-post.js"></script>
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</body>
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</html>
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