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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>offset-distance interpolation</title>
<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
<meta name="assert" content="offset-distance supports animation.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
</head>
<style>
.parent {
offset-path: ray(30deg closest-side);
}
.target {
offset-path: ray(10deg closest-side);
}
</style>
<body>
<script>
'use strict';
test_no_interpolation({
property: 'offset-path',
from: "path('M 0 0 L 100 100 M 100 200 L 200 200 Z L 200 100 Z')",
to: "ray(0deg closest-side)",
});
test_no_interpolation({
property: 'offset-path',
from: "ray(0deg closest-corner)",
to: "none",
});
// Neutral keyframes use the inline style.
test_interpolation({
property: 'offset-path',
from: neutralKeyframe,
to: 'ray(20deg closest-side)',
}, [
{at: -0.3, expect: 'ray(7deg closest-side)'},
{at: 0, expect: 'ray(10deg closest-side)'},
{at: 0.3, expect: 'ray(13deg closest-side)'},
{at: 0.6, expect: 'ray(16deg closest-side)'},
{at: 1, expect: 'ray(20deg closest-side)'},
{at: 1.5, expect: 'ray(25deg closest-side)'},
]);
// No interpolation to a ray from the initial value 'none'.
test_no_interpolation({
property: 'offset-path',
from: 'initial',
to: 'ray(20deg closest-side)',
});
// 'inherit' keyframes use the parent style.
test_interpolation({
property: 'offset-path',
from: 'inherit',
to: 'ray(20deg closest-side)',
}, [
{at: -0.3, expect: 'ray(33deg closest-side)'},
{at: 0, expect: 'ray(30deg closest-side)'},
{at: 0.3, expect: 'ray(27deg closest-side)'},
{at: 0.6, expect: 'ray(24deg closest-side)'},
{at: 1, expect: 'ray(20deg closest-side)'},
{at: 1.5, expect: 'ray(15deg closest-side)'},
]);
// No interpolation to a ray from the initial value 'none'.
test_no_interpolation({
property: 'offset-path',
from: 'unset',
to: 'ray(20deg closest-side)',
});
// No interpolation to a ray from the initial value 'none'.
test_no_interpolation({
property: 'offset-path',
from: 'none',
to: 'ray(20deg closest-side)',
});
// Interpolation between rays.
test_interpolation({
property: 'offset-path',
from: 'ray(10deg sides contain)',
to: 'ray(50deg sides contain)'
}, [
{at: -1, expect: 'ray(-30deg sides contain)'},
{at: 0, expect: 'ray(10deg sides contain)'},
{at: 0.125, expect: 'ray(15deg sides contain)'},
{at: 0.875, expect: 'ray(45deg sides contain)'},
{at: 1, expect: 'ray(50deg sides contain)'},
{at: 2, expect: 'ray(90deg sides contain)'},
]);
test_interpolation({
property: 'offset-path',
from: 'ray(-10deg farthest-corner)',
to: 'ray(-50deg farthest-corner)'
}, [
{at: -1, expect: 'ray(30deg farthest-corner)'},
{at: 0, expect: 'ray(-10deg farthest-corner)'},
{at: 0.125, expect: 'ray(-15deg farthest-corner)'},
{at: 0.875, expect: 'ray(-45deg farthest-corner)'},
{at: 1, expect: 'ray(-50deg farthest-corner)'},
{at: 2, expect: 'ray(-90deg farthest-corner)'},
]);
test_interpolation({
property: 'offset-path',
from: 'ray(-10deg farthest-corner at 0% 0px)',
to: 'ray(-50deg farthest-corner at 100% 100px)'
}, [
{at: -1, expect: 'ray(30deg farthest-corner at -100% -100px)'},
{at: 0, expect: 'ray(-10deg farthest-corner at 0% 0px)'},
{at: 0.125, expect: 'ray(-15deg farthest-corner at 12.5% 12.5px)'},
{at: 0.875, expect: 'ray(-45deg farthest-corner at 87.5% 87.5px)'},
{at: 1, expect: 'ray(-50deg farthest-corner at 100% 100px)'},
{at: 2, expect: 'ray(-90deg farthest-corner at 200% 200px)'},
]);
test_interpolation({
property: 'offset-path',
from: 'ray(-10deg farthest-corner)',
to: 'ray(-50deg farthest-corner at 100% 100%)'
}, [
// TODO: Test intermediate values as well, once the expected behavior
// is clear in the spec. Right now it's a bit unclear whether or how to
// interpolate to/from the initial 'auto' value.
{at: 1, expect: 'ray(-50deg farthest-corner at 100% 100%)'},
]);
// No interpolation between different sizes and/or different containment and/or coord-boxes.
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg farthest-side)',
to: 'ray(300deg sides)'
});
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg sides contain)',
to: 'ray(300deg sides)'
});
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg farthest-side contain)',
to: 'ray(300deg sides)'
});
test_no_interpolation({
property: 'offset-path',
from: 'ray(-10deg farthest-corner) content-box',
to: 'ray(-50deg farthest-corner at 100% 100%) padding-box'
});
</script>
</body>
</html>