50 lines
1.3 KiB
HTML
50 lines
1.3 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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<script>
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description("Test that the rendering context state is intact after a call to putImageData()");
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var ctx = document.createElement('canvas').getContext('2d');
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ctx.fillStyle = 'red';
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ctx.fillRect(0, 0, 1, 1);
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debug("Checking initial state for sanity");
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var imageData = ctx.getImageData(0, 0, 2, 1);
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var imgdata = imageData.data;
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shouldBe("ctx.fillStyle", "'#ff0000'");
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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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shouldBe("imgdata[3]", "255");
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shouldBe("imgdata[4]", "0");
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shouldBe("imgdata[5]", "0");
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shouldBe("imgdata[6]", "0");
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shouldBe("imgdata[7]", "0");
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debug("Calling putImageData()");
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ctx.putImageData(imageData, 1, 1);
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imageData = ctx.getImageData(1, 1, 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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shouldBe("imgdata[3]", "255");
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debug("Checking if state is intact");
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shouldBe("ctx.fillStyle", "'#ff0000'");
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ctx.fillRect(2, 2, 1, 1);
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imageData = ctx.getImageData(2, 2, 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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shouldBe("imgdata[3]", "255");
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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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