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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-fonts/animations/font-size-adjust-interpolation.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="UTF-8">
<title>font-size-adjust interpolation</title>
<meta name="assert" content="font-size-adjust supports animation as a number">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style type="text/css">
.container {
font-size: 20px;
line-height: 1;
}
.parent {
font-size-adjust: 3;
}
.target {
display: inline-block;
font-size-adjust: 1;
}
.expected {
color: green;
margin-right: 30px;
}
</style>
<body>
<template id="target-template">
<span class="container">
<div class="target">x</span>
</div>
</template>
</body>
<script>
test_interpolation({
property: 'font-size-adjust',
from: neutralKeyframe,
to: '2',
}, [
{at: -2, expect: '0'},
{at: -0.3, expect: '0.7'},
{at: 0, expect: '1'},
{at: 0.3, expect: '1.3'},
{at: 0.6, expect: '1.6'},
{at: 1, expect: '2'},
{at: 1.5, expect: '2.5'},
]);
test_no_interpolation({
property: 'font-size-adjust',
from: 'initial',
to: '2',
});
test_no_interpolation({
property: 'font-size-adjust',
from: 'initial',
to: 'cap-height 2',
});
test_interpolation({
property: 'font-size-adjust',
from: 'inherit',
to: '2',
}, [
{at: -2, expect: '5'},
{at: -0.3, expect: '3.3'},
{at: 0, expect: '3'},
{at: 0.3, expect: '2.7'},
{at: 0.6, expect: '2.4'},
{at: 1, expect: '2'},
{at: 1.5, expect: '1.5'},
]);
test_interpolation({
property: 'font-size-adjust',
from: 'unset',
to: '2',
}, [
{at: -2, expect: '5'},
{at: -0.3, expect: '3.3'},
{at: 0, expect: '3'},
{at: 0.3, expect: '2.7'},
{at: 0.6, expect: '2.4'},
{at: 1, expect: '2'},
{at: 1.5, expect: '1.5'},
]);
test_interpolation({
property: 'font-size-adjust',
from: '0',
to: '1.2'
}, [
{at: -2, expect: '0'},
{at: -0.3, expect: '0'},
{at: 0, expect: '0'},
{at: 0.3, expect: '0.36'},
{at: 0.6, expect: '0.72'},
{at: 1, expect: '1.2'},
{at: 1.5, expect: '1.8'},
]);
test_interpolation({
property: 'font-size-adjust',
from: 'cap-height 0',
to: 'cap-height 1.2'
}, [
{at: -2, expect: 'cap-height 0'},
{at: -0.3, expect: 'cap-height 0'},
{at: 0, expect: 'cap-height 0'},
{at: 0.3, expect: 'cap-height 0.36'},
{at: 0.6, expect: 'cap-height 0.72'},
{at: 1, expect: 'cap-height 1.2'},
{at: 1.5, expect: 'cap-height 1.8'},
]);
test_no_interpolation({
property: 'font-size-adjust',
from: 'none',
to: '1.2'
});
test_no_interpolation({
property: 'font-size-adjust',
from: 'none',
to: 'cap-height 1.2'
});
test_interpolation({
property: 'font-size-adjust',
from: '0.2',
to: '1.2'
}, [
{at: -2, expect: '0'}, // CSS font-size-adjust can't be negative.
{at: -0.3, expect: '0'},
{at: 0, expect: '0.2'},
{at: 0.3, expect: '0.5'},
{at: 0.6, expect: '0.8'},
{at: 1, expect: '1.2'},
{at: 1.5, expect: '1.7'},
]);
test_interpolation({
property: 'font-size-adjust',
from: 'ch-width 0.2',
to: 'ch-width 1.2'
}, [
{at: -2, expect: 'ch-width 0'}, // CSS font-size-adjust can't be negative.
{at: -0.3, expect: 'ch-width 0'},
{at: 0, expect: 'ch-width 0.2'},
{at: 0.3, expect: 'ch-width 0.5'},
{at: 0.6, expect: 'ch-width 0.8'},
{at: 1, expect: 'ch-width 1.2'},
{at: 1.5, expect: 'ch-width 1.7'},
]);
test_no_interpolation({ // can't interpolate between different adjustment basis
property: 'font-size-adjust',
from: 'ex-height 0.2',
to: 'cap-height 1.2'
});
</script>