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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/motion/animation/offset-position-interpolation.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>offset-position interpolation</title>
<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
<meta name="assert" content="offset-position supports <position> animation.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
offset-position: 30px 10px;
}
.target {
offset-position: 10px 30px;
}
</style>
</head>
<body>
<script>
test_interpolation({
property: 'offset-position',
from: '220px 240px',
to: '300px 400px',
}, [
{at: -1, expect: '140px 80px'},
{at: 0, expect: '220px 240px'},
{at: 0.125, expect: '230px 260px'},
{at: 0.875, expect: '290px 380px'},
{at: 1, expect: '300px 400px'},
{at: 2, expect: '380px 560px'}
]);
test_interpolation({
property: 'offset-position',
from: 'left 480px top 400px',
to: 'right -140% bottom -60%',
}, [
{at: -1, expect: 'calc(960px - 240%) calc(800px - 160%)'},
{at: 0, expect: 'left calc(0% + 480px) top calc(0% + 400px)'},
{at: 0.125, expect: 'calc(420px + 30%) calc(350px + 20%)'},
{at: 0.875, expect: 'calc(210% + 60px) calc(140% + 50px)'},
{at: 1, expect: 'right -140% bottom -60%'},
{at: 2, expect: 'calc(480% - 480px) calc(320% - 400px)'}
]);
test_interpolation({
property: 'offset-position',
from: 'left top',
to: 'left 8px bottom 20%',
}, [
{at: -1, expect: 'calc(0% - 8px) -80%'},
{at: 0, expect: 'left top'},
{at: 0.125, expect: 'calc(0% + 1px) 10%'},
{at: 0.875, expect: 'calc(0% + 7px) 70%'},
{at: 1, expect: 'left calc(0% + 8px) bottom 20%'},
{at: 2, expect: 'calc(0% + 16px) 160%'}
]);
test_no_interpolation({
property: 'offset-position',
from: 'right 10px top 20%',
to: 'auto'
});
test_interpolation({
property: 'offset-position',
from: neutralKeyframe,
to: '20px 20px',
}, [
{at: -0.3, expect: '7px 33px'},
{at: 0, expect: '10px 30px'},
{at: 0.3, expect: '13px 27px'},
{at: 0.6, expect: '16px 24px'},
{at: 1, expect: '20px 20px'},
{at: 1.5, expect: '25px 15px'},
]);
test_no_interpolation({
property: 'offset-position',
from: 'initial',
to: '20px 20px',
});
test_interpolation({
property: 'offset-position',
from: 'inherit',
to: '20px 20px',
}, [
{at: -0.3, expect: '33px 7px'},
{at: 0, expect: '30px 10px'},
{at: 0.3, expect: '27px 13px'},
{at: 0.6, expect: '24px 16px'},
{at: 1, expect: '20px 20px'},
{at: 1.5, expect: '15px 25px'},
]);
test_no_interpolation({
property: 'offset-position',
from: 'unset',
to: '20px 20px',
});
test_interpolation({
property: 'offset-position',
from: '0% 50%',
to: '100% 150%'
}, [
{at: -0.3, expect: '-30% 20%'},
{at: 0, expect: '0% 50%'},
{at: 0.3, expect: '30% 80%'},
{at: 0.6, expect: '60% 110%'},
{at: 1, expect: '100% 150%'},
{at: 1.5, expect: '150% 200%'}
]);
test_no_interpolation({
property: 'offset-position',
from: 'auto',
to: '20px 20px',
});
</script>
</body>
</html>