<!DOCTYPE html>
<title>Test quotes vs. no-quotes matchings of generic font family keywords in a CanvasRenderingContext2D</title>
<link rel="help" href="https://drafts.csswg.org/css-fonts-4/#family-name-syntax">
<link rel="author" title="Frédéric Wang" href="mailto:[email protected]">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/css-fonts/support/font-family-keywords.js"></script>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css"/>
<body>
<canvas id="canvas" width="400" height="150"></canvas>
<script>
setup({ explicit_done: true });
window.addEventListener("load", () => { document.fonts.ready.then(runTests); });
function runTests() {
const measured_text = "|||||";
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.font = `25px Ahem`;
let ahem_expected_width = ctx.measureText(measured_text).width;
kGenericFontFamilyKeywords.forEach(keyword => {
test(() => {
ctx.font = `25px ${keyword}`;
let expected_width = ctx.measureText(measured_text).width;
// Insert the @font-face rules for quoted and unquoted keywords.
document.documentElement.insertAdjacentHTML('beforeend', `
<style>
@font-face {
font-family: ${keyword};
src: local(Ahem), url('/fonts/Ahem.ttf');
}
</style>
<style>
@font-face {
font-family: "${keyword}";
src: local(Ahem), url('/fonts/Ahem.ttf');
}
</style>`);
ctx.font = `25px ${keyword}`;
let unquoted_width = ctx.measureText(measured_text).width;
assert_equals(unquoted_width, expected_width, `unquoted ${keyword} does not match @font-face rule`);
ctx.font = `25px "${keyword}"`;
let quoted_width = ctx.measureText(measured_text).width;
assert_equals(quoted_width, ahem_expected_width, `quoted ${keyword} matches @font-face rule`);
}, `@font-face matching for quoted and unquoted ${keyword} (drawing text in a canvas)`);
});
done();
}
</script>
</body>
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