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<!DOCTYPE html>
<meta charset="UTF-8">
<meta charset="UTF-8">
<title>mask-position-interpolation</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-position">
<meta name="assert" content="mask-position supports animation">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.container {
display: inline-block;
border: 2px solid black;
}
.parent {
mask-position: 30px 10px;
}
.target {
width: 120px;
height: 120px;
mask-position: 10px 30px;
}
</style>
<body>
<template id="target-template">
<div class="container">
<div class="target"></div>
</div>
</template>
<script>
// neutral
test_interpolation({
property: 'mask-position',
from: neutralKeyframe,
to: '20px 20px',
}, [
{at: -0.25, expect: '7.5px 32.5px'},
{at: 0, expect: '10px 30px'},
{at: 0.25, expect: '12.5px 27.5px'},
{at: 0.5, expect: '15px 25px'},
{at: 0.75, expect: '17.5px 22.5px'},
{at: 1, expect: '20px 20px'},
{at: 1.25, expect: '22.5px 17.5px'},
]);
// initial
test_interpolation({
property: 'mask-position',
from: 'initial',
to: '20px 20px',
}, [
{at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
{at: 0, expect: '0% 0%'},
{at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
{at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
{at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
{at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
{at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
]);
// inherit
test_interpolation({
property: 'mask-position',
from: 'inherit',
to: '20px 20px',
}, [
{at: -0.25, expect: '32.5px 7.5px'},
{at: 0, expect: '30px 10px'},
{at: 0.25, expect: '27.5px 12.5px'},
{at: 0.5, expect: '25px 15px'},
{at: 0.75, expect: '22.5px 17.5px'},
{at: 1, expect: '20px 20px'},
{at: 1.25, expect: '17.5px 22.5px'},
]);
// unset
test_interpolation({
property: 'mask-position',
from: 'unset',
to: '20px 20px',
}, [
{at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
{at: 0, expect: '0% 0%'},
{at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
{at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
{at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
{at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
{at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
]);
// Test equal number of position values as background images.
test_interpolation({
property: 'mask-position',
from: '0px 0px, 0px 0px, 0px 0px, 0px 0px',
to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
}, [
{at: -0.25, expect: '-20px -20px, -20px -20px, -20px -20px, -20px -20px'},
{at: 0, expect: ' 0px 0px, 0px 0px, 0px 0px, 0px 0px'},
{at: 0.25, expect: ' 20px 20px, 20px 20px, 20px 20px, 20px 20px'},
{at: 0.5, expect: ' 40px 40px, 40px 40px, 40px 40px, 40px 40px'},
{at: 0.75, expect: ' 60px 60px, 60px 60px, 60px 60px, 60px 60px'},
{at: 1, expect: ' 80px 80px, 80px 80px, 80px 80px, 80px 80px'},
{at: 1.25, expect: '100px 100px, 100px 100px, 100px 100px, 100px 100px'},
]);
// Test single position value repeated over background images.
test_interpolation({
property: 'mask-position',
from: 'top 0px left 0px',
to: 'left 80px top 80px',
}, [
{at: -0.25, expect: '-20px -20px'},
{at: 0, expect: ' 0px 0px'},
{at: 0.25, expect: ' 20px 20px'},
{at: 0.5, expect: ' 40px 40px'},
{at: 0.75, expect: ' 60px 60px'},
{at: 1, expect: ' 80px 80px'},
{at: 1.25, expect: '100px 100px'},
]);
// Test mismatched numbers of position values.
test_interpolation({
property: 'mask-position',
from: '0px 0px, 80px 0px',
to: '40px 40px, 80px 80px, 0px 80px',
}, [
{at: -0.25, expect:
'-10px -10px, 80px -20px, 0px -20px, 90px -10px, -20px -20px, 100px -20px'},
{at: 0, expect:
' 0px 0px, 80px 0px, 0px 0px, 80px 0px, 0px 0px, 80px 0px'},
{at: 0.25, expect:
' 10px 10px, 80px 20px, 0px 20px, 70px 10px, 20px 20px, 60px 20px'},
{at: 0.5, expect:
' 20px 20px, 80px 40px, 0px 40px, 60px 20px, 40px 40px, 40px 40px'},
{at: 0.75, expect:
' 30px 30px, 80px 60px, 0px 60px, 50px 30px, 60px 60px, 20px 60px'},
{at: 1, expect:
' 40px 40px, 80px 80px, 0px 80px, 40px 40px, 80px 80px, 0px 80px'},
{at: 1.25, expect:
' 50px 50px, 80px 100px, 0px 100px, 30px 50px, 100px 100px, -20px 100px'},
]);
</script>
</body>
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