<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>translate interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#propdef-translate">
<meta name="assert" content="translate supports <length> and <percentage> animation.">
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
translate: 100px 200px 300px;
}
.target {
width: 100px;
height: 100px;
background-color: black;
translate: 10px;
}
.expected {
background-color: green;
}
</style>
</head>
<body>
<template id="target-template">
<div class="parent">
<div class="target"></div>
</div>
</template>
<script>
// Matching one-length (pixels) animation.
test_interpolation({
property: 'translate',
from: '-100px',
to: '100px',
}, [
{at: -1, expect: '-300px'},
{at: 0, expect: '-100px'},
{at: 0.25, expect: '-50px'},
{at: 0.75, expect: '50px'},
{at: 1, expect: '100px'},
{at: 2, expect: '300px'},
]);
// Matching one-length (percentage) animation.
test_interpolation({
property: 'translate',
from: '-100%',
to: '100%',
}, [
{at: -1, expect: '-300%'},
{at: 0, expect: '-100%'},
{at: 0.25, expect: '-50%'},
{at: 0.75, expect: '50%'},
{at: 1, expect: '100%'},
{at: 2, expect: '300%'},
]);
// Matching two-length (all pixels) animation.
test_interpolation({
property: 'translate',
from: '-100px -50px',
to: '100px 50px',
}, [
{at: -1, expect: '-300px -150px'},
{at: 0, expect: '-100px -50px'},
{at: 0.25, expect: '-50px -25px'},
{at: 0.75, expect: '50px 25px'},
{at: 1, expect: '100px 50px'},
{at: 2, expect: '300px 150px'},
]);
// Matching three-length (all pixels) animation.
test_interpolation({
property: 'translate',
from: '220px 240px 260px',
to: '300px 400px 500px',
}, [
{at: -1, expect: '140px 80px 20px'},
{at: 0, expect: '220px 240px 260px'},
{at: 0.125, expect: '230px 260px 290px'},
{at: 0.875, expect: '290px 380px 470px'},
{at: 1, expect: '300px 400px 500px'},
{at: 2, expect: '380px 560px 740px'}
]);
// Going from one length to three lengths.
test_interpolation({
property: 'translate',
from: '0px',
to: '-100px -50px 100px',
}, [
{at: -1, expect: '100px 50px -100px'},
{at: 0, expect: '0px'},
{at: 0.25, expect: '-25px -12.5px 25px'},
{at: 0.75, expect: '-75px -37.5px 75px'},
{at: 1, expect: '-100px -50px 100px'},
{at: 2, expect: '-200px -100px 200px'},
]);
// Going from three lengths to one length.
test_interpolation({
property: 'translate',
from: '-100px -50px 100px',
to: '0px',
}, [
{at: -1, expect: '-200px -100px 200px'},
{at: 0, expect: '-100px -50px 100px'},
{at: 0.25, expect: '-75px -37.5px 75px'},
{at: 0.75, expect: '-25px -12.5px 25px'},
{at: 1, expect: '0px'},
{at: 2, expect: '100px 50px -100px'},
]);
// Going from three-lengths to two-percentages.
test_interpolation({
property: 'translate',
from: '480px 400px 320px',
to: '240% 160%',
}, [
{at: -1, expect: 'calc(960px - 240%) calc(800px - 160%) 640px'},
{at: 0, expect: 'calc(0% + 480px) calc(0% + 400px) 320px'},
{at: 0.125, expect: 'calc(420px + 30%) calc(350px + 20%) 280px'},
{at: 0.875, expect: 'calc(210% + 60px) calc(140% + 50px) 40px'},
{at: 1, expect: '240% 160%'},
{at: 2, expect: 'calc(480% - 480px) calc(320% - 400px) -320px'}
]);
// Handling of the none value.
test_interpolation({
property: 'translate',
from: 'none',
to: 'none',
}, [
{at: -1, expect: 'none'},
{at: 0, expect: 'none'},
{at: 0.125, expect: 'none'},
{at: 0.875, expect: 'none'},
{at: 1, expect: 'none'},
{at: 2, expect: 'none'}
]);
// Going from none to a valid value; test that it converts properly.
test_interpolation({
property: 'translate',
from: 'none',
to: '8px 80% 800px',
}, [
{at: -1, expect: '-8px -80% -800px'},
{at: 0, expect: '0px 0%'},
{at: 0.125, expect: '1px 10% 100px'},
{at: 0.875, expect: '7px 70% 700px'},
{at: 1, expect: '8px 80% 800px'},
{at: 2, expect: '16px 160% 1600px'}
]);
// Test neutral keyframe; make sure it adds the underlying.
test_interpolation({
property: 'translate',
from: neutralKeyframe,
to: '20px',
}, [
{at: -1, expect: '0px'},
{at: 0, expect: '10px'},
{at: 0.25, expect: '12.5px'},
{at: 0.75, expect: '17.5px'},
{at: 1, expect: '20px'},
{at: 2, expect: '30px'},
]);
// Test initial value; for 'scale' this is 'none'.
test_interpolation({
property: 'translate',
from: 'initial',
to: '200px 100px 200px',
}, [
{at: -1, expect: '-200px -100px -200px'},
{at: 0, expect: '0px'},
{at: 0.25, expect: '50px 25px 50px'},
{at: 0.75, expect: '150px 75px 150px'},
{at: 1, expect: '200px 100px 200px'},
{at: 2, expect: '400px 200px 400px'},
]);
test_interpolation({
property: 'translate',
from: '200px 100px 400px',
to: 'initial',
}, [
{at: -1, expect: '400px 200px 800px'},
{at: 0, expect: '200px 100px 400px'},
{at: 0.25, expect: '150px 75px 300px'},
{at: 0.75, expect: '50px 25px 100px'},
{at: 1, expect: '0px'},
{at: 2, expect: '-200px -100px -400px'},
]);
// Test unset value; for 'translate' this is 'none'.
test_interpolation({
property: 'translate',
from: 'unset',
to: '20px',
}, [
{at: -1, expect: '-20px'},
{at: 0, expect: '0px'},
{at: 0.25, expect: '5px'},
{at: 0.75, expect: '15px'},
{at: 1, expect: '20px'},
{at: 2, expect: '40px'},
]);
// Test inherited value.
test_interpolation({
property: 'translate',
from: 'inherit',
to: '200px 100px 200px',
}, [
{at: -1, expect: '0px 300px 400px'},
{at: 0, expect: '100px 200px 300px'},
{at: 0.25, expect: '125px 175px 275px'},
{at: 0.75, expect: '175px 125px 225px'},
{at: 1, expect: '200px 100px 200px'},
{at: 2, expect: '300px 0px 100px'},
]);
test_interpolation({
property: 'translate',
from: '200px 100px 200px',
to: 'inherit',
}, [
{at: -1, expect: '300px 0px 100px'},
{at: 0, expect: '200px 100px 200px'},
{at: 0.25, expect: '175px 125px 225px'},
{at: 0.75, expect: '125px 175px 275px'},
{at: 1, expect: '100px 200px 300px'},
{at: 2, expect: '0px 300px 400px'},
]);
// Test combination of initial and inherit.
test_interpolation({
property: 'translate',
from: 'initial',
to: 'inherit',
}, [
{at: -1, expect: '-100px -200px -300px'},
{at: 0, expect: '0px'},
{at: 0.25, expect: '25px 50px 75px'},
{at: 0.75, expect: '75px 150px 225px'},
{at: 1, expect: '100px 200px 300px'},
{at: 2, expect: '200px 400px 600px'},
]);
test_interpolation({
property: 'translate',
from: 'inherit',
to: 'initial',
}, [
{at: -1, expect: '200px 400px 600px'},
{at: 0, expect: '100px 200px 300px'},
{at: 0.25, expect: '75px 150px 225px'},
{at: 0.75, expect: '25px 50px 75px'},
{at: 1, expect: '0px'},
{at: 2, expect: '-100px -200px -300px'},
]);
</script>
</body>
</html>
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