30 lines
1.1 KiB
HTML
30 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<title>CSS aspect-ratio: canvas with aspect-ratio and contain:size</title>
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<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
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<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
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<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
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<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/5550">
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<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
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<meta name="assert" content="This test verifies aspect-ratio's <ratio> is used to determine the canvas' size because contain:size enforces no intrinsic aspect ratio.">
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<style>
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canvas {
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width: 100px;
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aspect-ratio: 1/1;
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contain: size;
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}
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</style>
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<script>
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window.onload = function() {
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const canvas = document.querySelector('canvas');
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const ctx = canvas.getContext('2d');
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ctx.fillStyle = 'green';
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ctx.fillRect(0, 0, 200, 200);
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}
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</script>
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<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
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<canvas width=200 height=200></canvas>
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</html>
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