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130 lines
2.3 KiB
HTML
130 lines
2.3 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>z-index interpolation</title>
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<link rel="help" href="https://www.w3.org/TR/CSS2/visuren.html#z-index">
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<meta name="assert" content="z-index supports animation">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/css/support/interpolation-testcommon.js"></script>
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<style>
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body {
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margin-top: 20px;
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}
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.layer-reference {
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position: fixed;
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top: 0px;
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height: 100vh;
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width: 50px;
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background-color: rgba(255, 255, 255, 0.75);
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font-family: sans-serif;
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text-align: center;
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padding-top: 5px;
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border: 1px solid;
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}
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.parent {
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z-index: 15;
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}
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.target {
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position: relative;
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width: 350px;
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height: 10px;
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z-index: -2;
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}
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.actual {
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background-color: black;
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}
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.expected {
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background-color: green;
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}
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</style>
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<body></body>
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<script>
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test_interpolation({
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property: 'z-index',
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from: neutralKeyframe,
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to: '5',
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}, [
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{at: -0.3, expect: '-4'},
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{at: 0, expect: '-2'},
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{at: 0.3, expect: '0'},
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{at: 0.6, expect: '2'},
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{at: 1, expect: '5'},
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{at: 1.5, expect: '9'},
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]);
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test_no_interpolation({
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property: 'z-index',
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from: 'initial',
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to: '5',
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});
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// We fail to inherit correctly due to style overadjustment: crbug.com/375982
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test_interpolation({
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property: 'z-index',
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from: 'inherit',
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to: '5',
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}, [
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{at: -0.3, expect: '18'},
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{at: 0, expect: '15'},
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{at: 0.3, expect: '12'},
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{at: 0.6, expect: '9'},
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{at: 1, expect: '5'},
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{at: 1.5, expect: '0'},
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]);
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test_no_interpolation({
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property: 'z-index',
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from: 'unset',
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to: '5',
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});
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test_interpolation({
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property: 'z-index',
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from: '-5',
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to: '5'
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}, [
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{at: -0.3, expect: '-8'},
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{at: 0, expect: '-5'},
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{at: 0.3, expect: '-2'},
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{at: 0.6, expect: '1'},
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{at: 1, expect: '5'},
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{at: 1.5, expect: '10'},
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]);
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test_interpolation({
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property: 'z-index',
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from: '2',
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to: '4'
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}, [
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{at: -0.3, expect: '1'},
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{at: 0, expect: '2'},
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{at: 0.3, expect: '3'},
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{at: 0.6, expect: '3'},
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{at: 1, expect: '4'},
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{at: 1.5, expect: '5'},
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]);
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test_interpolation({
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property: 'z-index',
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from: '-2',
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to: '-4'
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}, [
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{at: -0.3, expect: '-1'},
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{at: 0, expect: '-2'},
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{at: 0.1, expect: '-2'},
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{at: 0.3, expect: '-3'},
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{at: 0.6, expect: '-3'},
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{at: 1, expect: '-4'},
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{at: 1.5, expect: '-5'},
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]);
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test_no_interpolation({
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property: 'z-index',
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from: 'auto',
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to: '10',
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});
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</script>
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