tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html - Issue 399393002: Add CSS Transitions performance tests

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Side by Side Diff: tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_chaining_by_updating_class.html

Issue 399393002: Add CSS Transitions performance tests (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: Appease linter Created 6 years, 2 months ago

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	1 <!DOCTYPE html>

	2 <meta name="viewport" content="width=device-width, user-scalable=no">

	3 <link rel="stylesheet" type="text/css" href="resources/tablet.css">

	4 <link rel="stylesheet" type="text/css" href="resources/transition.css">

	5 <script src="resources/perftesthelper.js"></script>

	6 <style>

	7 target {

	8 opacity: 0;

	9 }

	10 .keyframe0 {

	11 opacity: 0;

	12 }

	13 .keyframe1 {

	14 opacity: 1;

	15 }

	16 </style>

	17

	18 <container id="container"></container>

	19

	20 <script>

	21 var N = PerfTestHelper.getN(1000);

	22 var duration = 1000;

	23 var keyframeValues = [0, 1];

	24

	25 for (var i = 0; i < N; i++) {

	26 var target = document.createElement('target');

	27 target._keyframe = 0;

	28 target.style.transitionDelay = (-i / N * duration) + 'ms';

	29 container.appendChild(target);

	30 target.addEventListener('transitionend', restartTransition);

	31 }

	32

	33 function restartTransition(event) {

	34 event.target._keyframe ^= 1;

	35 event.target.className = 'keyframe' + event.target._keyframe;

	36 event.target.style.removeProperty('transition-delay');

	37 }

	38

	39 requestAnimationFrame(function() {

	40 var styleRule = document.styleSheets[2].rules[0].style;

	41 styleRule.opacity = keyframeValues[1];

	42 requestAnimationFrame(function() {

	43 styleRule.opacity = keyframeValues[0];

	44 });

	45 });

	46

	47 PerfTestHelper.signalReady();

	48 </script>

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