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124 lines
4.0 KiB
HTML
124 lines
4.0 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<script src="../testcommon.js"></script>
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<style>
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@keyframes empty { }
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@keyframes animTransform {
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from { transform: translate(0px); }
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to { transform: translate(100px); }
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}
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.target {
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/* Element needs geometry to be eligible for layerization */
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width: 100px;
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height: 100px;
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background-color: white;
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}
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</style>
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<body>
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<script>
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'use strict';
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function waitForDocLoad() {
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return new Promise(function(resolve, reject) {
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if (document.readyState === 'complete') {
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resolve();
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} else {
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window.addEventListener('load', resolve);
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}
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});
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}
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async_test(function(t) {
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var div = addDiv(t);
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var cs = window.getComputedStyle(div);
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// Test that empty animations actually start.
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//
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// Normally we tie the start of animations to when their first frame of
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// the animation is rendered. However, for animations that don't actually
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// trigger a paint (e.g. because they are empty, or are animating something
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// that doesn't render or is offscreen) we want to make sure they still
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// start.
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//
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// Before we start, wait for the document to finish loading. This is because
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// during loading we will have other paint events taking place which might,
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// by luck, happen to trigger animations that otherwise would not have been
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// triggered, leading to false positives.
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//
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// As a result, it's better to wait until we have a more stable state before
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// continuing.
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var promiseCallbackDone = false;
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waitForDocLoad().then(function() {
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div.style.animation = 'empty 1000s';
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var animation = div.getAnimations()[0];
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animation.ready.then(function() {
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promiseCallbackDone = true;
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}).catch(function() {
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assert_unreached('ready promise was rejected');
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});
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// We need to wait for up to three frames. This is because in some
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// cases it can take up to two frames for the initial layout
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// to take place. Even after that happens we don't actually resolve the
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// ready promise until the following tick.
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})
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.then(waitForFrame)
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.then(waitForFrame)
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.then(waitForFrame)
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.then(t.step_func(function() {
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assert_true(promiseCallbackDone,
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'ready promise for an empty animation was resolved'
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+ ' within three animation frames');
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t.done();
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}));
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}, 'Animation.ready is resolved for an empty animation');
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// Test that compositor animations with delays get synced correctly
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//
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// NOTE: It is important that we DON'T use
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// SpecialPowers.DOMWindowUtils.advanceTimeAndRefresh here since that takes
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// us through a different code path.
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async_test(function(t) {
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// This test only applies to compositor animations
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const OMTAPrefKey = 'layers.offmainthreadcomposition.async-animations';
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var omtaEnabled = SpecialPowers.DOMWindowUtils.layerManagerRemote &&
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opener.SpecialPowers.getBoolPref(OMTAPrefKey);
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if (!omtaEnabled) {
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t.done();
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return;
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}
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// Setup animation
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var div = addDiv(t);
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div.classList.add('target');
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div.style.animation = 'animTransform 100s -50s forwards';
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var animation = div.getAnimations()[0];
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animation.ready.then(t.step_func(function() {
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var transformStr =
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SpecialPowers.DOMWindowUtils.getOMTAStyle(div, 'transform');
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var matrixComponents =
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transformStr.startsWith('matrix(')
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? transformStr.substring('matrix('.length, transformStr.length-1)
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.split(',')
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.map(component => Number(component))
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: [];
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assert_equals(matrixComponents.length, 6,
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'Got a valid transform matrix on the compositor'
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+ ' (got: "' + transformStr + '")');
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// If the delay has been applied correctly we should be at least
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// half-way through the animation
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assert_true(matrixComponents[4] >= 50,
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'Animation is at least half-way through on the compositor'
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+ ' (got translation of ' + matrixComponents[4] + ')');
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t.done();
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}));
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}, 'Starting an animation with a delay starts from the correct point');
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done();
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</script>
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</body>
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