<!DOCTYPE html>
<meta charset="UTF-8">
<title>border-image-slice interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#border-image-slice">
<meta name="assert" content="border-image-slice supports animation by computed value">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
border-image-slice: 50%;
}
.target {
width: 50px;
height: 50px;
background-color: black;
display: inline-block;
border: 25px;
border-image-source: linear-gradient(45deg, red, blue, green);
border-image-slice: 20%;
}
.expected {
background-color: green;
margin-right: 2px;
}
</style>
<body></body>
<script>
test_interpolation({
property: 'border-image-slice',
from: neutralKeyframe,
to: '10%',
}, [
{at: -0.3, expect: '23%'},
{at: 0, expect: '20%'},
{at: 0.3, expect: '17%'},
{at: 0.5, expect: '15%'},
{at: 0.6, expect: '14%'},
{at: 1, expect: '10%'},
{at: 1.5, expect: '5%'},
]);
test_interpolation({
property: 'border-image-slice',
from: 'initial',
to: '10%',
}, [
{at: -0.3, expect: '127%'},
{at: 0, expect: '100%'},
{at: 0.3, expect: '73%'},
{at: 0.5, expect: '55%'},
{at: 0.6, expect: '46%'},
{at: 1, expect: '10%'},
{at: 1.5, expect: '0%'},
]);
test_interpolation({
property: 'border-image-slice',
from: 'inherit',
to: '10%',
}, [
{at: -0.3, expect: '62%'},
{at: 0, expect: '50%'},
{at: 0.3, expect: '38%'},
{at: 0.5, expect: '30%'},
{at: 0.6, expect: '26%'},
{at: 1, expect: '10%'},
{at: 1.5, expect: '0%'},
]);
test_interpolation({
property: 'border-image-slice',
from: 'unset',
to: '10%',
}, [
{at: -0.3, expect: '127%'},
{at: 0, expect: '100%'},
{at: 0.3, expect: '73%'},
{at: 0.5, expect: '55%'},
{at: 0.6, expect: '46%'},
{at: 1, expect: '10%'},
{at: 1.5, expect: '0%'},
]);
test_interpolation({
property: 'border-image-slice',
from: '0%',
to: '50%',
}, [
{at: -0.3, expect: '0%'}, // CSS border-image-slice can't be negative.
{at: 0, expect: '0%'},
{at: 0.3, expect: '15%'},
{at: 0.5, expect: '25%'},
{at: 0.6, expect: '30%'},
{at: 1, expect: '50%'},
{at: 1.5, expect: '75%'},
]);
test_interpolation({
property: 'border-image-slice',
from: '0% 10% 20% 30%',
to: '40% 50% 60% 70%',
}, [
{at: -0.5, expect: '0% 0% 0% 10%'},
{at: 0, expect: '0% 10% 20% 30%'},
{at: 0.3, expect: '12% 22% 32% 42%'},
{at: 0.5, expect: '20% 30% 40% 50%'},
{at: 0.6, expect: '24% 34% 44% 54%'},
{at: 1, expect: '40% 50% 60% 70%'},
{at: 1.5, expect: '60% 70% 80% 90%'},
]);
test_interpolation({
property: 'border-image-slice',
from: '0 10 20 30 fill',
to: '40 50 60 70 fill',
}, [
{at: -0.5, expect: '0 0 0 10 fill'}, // CSS border-image-slice can't be negative.
{at: 0, expect: '0 10 20 30 fill'},
{at: 0.3, expect: '12 22 32 42 fill'},
{at: 0.5, expect: '20 30 40 50 fill'},
{at: 0.6, expect: '24 34 44 54 fill'},
{at: 1, expect: '40 50 60 70 fill'},
{at: 1.5, expect: '60 70 80 90 fill'},
]);
test_interpolation({
property: 'border-image-slice',
from: '0% 10 20% 30 fill',
to: '40% 50 60% 70 fill',
}, [
{at: -0.5, expect: '0% 0 0% 10 fill'}, // CSS border-image-slice can't be negative.
{at: 0, expect: '0% 10 20% 30 fill'},
{at: 0.3, expect: '12% 22 32% 42 fill'},
{at: 0.5, expect: '20% 30 40% 50 fill'},
{at: 0.6, expect: '24% 34 44% 54 fill'},
{at: 1, expect: '40% 50 60% 70 fill'},
{at: 1.5, expect: '60% 70 80% 90 fill'},
]);
test_no_interpolation({
property: 'border-image-slice',
from: '0% fill',
to: '50%',
});
test_no_interpolation({
property: 'border-image-slice',
from: '50%',
to: '100',
});
test_no_interpolation({
property: 'border-image-slice',
from: '50% fill',
to: '100 fill',
});
test_no_interpolation({
property: 'border-image-slice',
from: '0% 10 20% 30 fill',
to: '40% 50 60% 70',
});
test_no_interpolation({
property: 'border-image-slice',
from: '0% 10 20 30 fill',
to: '40 50 60% 70',
});
</script>
</body>
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