gecko-dev/layout/reftests/canvas/text-context-state-test.html

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<!DOCTYPE HTML>
<html>
<head>
<title>text to ensure text attributes are saved in the context state</title>
</head>
<body>
<canvas id="c" width="128" height="64" style="direction:ltr"></canvas>
<script type="text/javascript">
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
ctx.font = '16px sans-serif';
ctx.save();
ctx.textAlign = 'right';
ctx.textBaseline = 'alphabetic';
ctx.font = '24px serif';
ctx.save();
ctx.textAlign = 'center';
ctx.textBaseline = 'bottom';
ctx.font = '10px sans-serif';
ctx.fillText('something', 80, 60);
ctx.restore();
ctx.fillText('other thing', 128, 40);
ctx.restore();
ctx.fillText('yet another thing', 0, 0);
</script>
</body>
</html>