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34 lines
737 B
HTML
34 lines
737 B
HTML
<html>
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<head>
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<script type="application/javascript">
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function draw() {
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var canvas = document.getElementById("canvas");
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var ctx = canvas.getContext("2d");
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ctx.fillStyle = "red";
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ctx.fillRect(0, 0, 500, 500);
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ctx.save();
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ctx.beginPath();
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ctx.moveTo(30, 30);
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ctx.lineTo(149, 30);
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ctx.lineTo(150, 150);
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ctx.lineTo(30, 150);
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ctx.lineTo(30, 30);
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ctx.clip();
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ctx.clearRect(0, 0, 500, 500);
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/**
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* Work around a strange left edge offset problem in D2D.
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*/
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ctx.restore();
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ctx.fillStyle = "red";
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ctx.fillRect(0, 0, 1, 500);
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ctx.fillStyle = "white";
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ctx.fillRect(30, 30, 1, 120);
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}
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</script>
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</head>
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<body onload="draw()">
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<canvas id="canvas" width="300" height="300"></canvas>
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</body>
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</html>
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