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<!DOCTYPE html>
<html>
<head>
<title>Testing new font-matching algorithm for font-weight values introduced in CSS Fonts level 4 (for system fonts)</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-matching-algorithm" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- THIS TEST REQUIRES THAT YOU INSTALL THE [csstest-*.ttf] FONTS OF THE [resources] FOLDER -->
<style>
.testcase {
float:left;
margin: 5px;
font-size:48pt;
font-feature-settings: "kern" 1;
color: rgba(0,0,0,0.5);
background: linear-gradient(to left, lime 0%, lime 91px, red 91px);
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 900');
font-weight: 100;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 800');
font-weight: 250;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 700');
font-weight: 400;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 600');
font-weight: 450;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 300');
font-weight: 500;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 200');
font-weight: 750;
}
@font-face {
font-family: fontMatch;
src: local('CSSTest Weights 100');
font-weight: 900;
}
</style>
</head>
<body>
<span style="position: absolute; top: -100vh;">
<span style="font-family: fontMatch; font-weight: 100;">A</span>
<span style="font-family: fontMatch; font-weight: 250;">A</span>
<span style="font-family: fontMatch; font-weight: 400;">A</span>
<span style="font-family: fontMatch; font-weight: 450;">A</span>
<span style="font-family: fontMatch; font-weight: 500;">A</span>
<span style="font-family: fontMatch; font-weight: 750;">A</span>
<span style="font-family: fontMatch; font-weight: 900;">A</span>
</span>
<div id="testcases" style="overflow: hidden">
<!--
These testcases work using the new kerned CSSTest Weights fonts.
The letter A and its corresponding numeric digit kern as one character.
-->
<div class="testcase" style="font-family:'CSSTest Weights W2569'; font-weight: 375;">
A2
</div>
<div class="testcase" style="font-family:'CSSTest Weights Full'; font-weight: 375;">
A3
</div>
<div class="testcase" style="font-family:'CSSTest Weights W1479'; font-weight: 475;">
A4
</div>
<div class="testcase" style="font-family:'CSSTest Weights Full'; font-weight: 425;">
A5
</div>
<div class="testcase" style="font-family:'CSSTest Weights Full'; font-weight: 525;">
A6
</div>
<div class="testcase" style="font-family:'CSSTest Weights Full'; font-weight: 675;">
A7
</div>
<br clear="all">
</div>
<script>
var base_testcases = document.querySelectorAll('.testcase');
for(var i = 0; i < base_testcases.length; i++) {
test(
assert => { assert_approx_equals(base_testcases[i].getBoundingClientRect().width, 90, 2, "@font-face should be mapped to " + base_testcases[i].style.fontFamily + "."); },
"Test native font matching on " + base_testcases[i].style.fontFamily + " for weight " + base_testcases[i].style.fontWeight
);
}
</script>
</body>
</html>
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