tools/perf/page_sets/perf_week/css-transitions-simultaneous-by-updating-class.html - Issue 402433004: Test adding perf week tests as smoothness benchmark

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Issue 402433004: Test adding perf week tests as smoothness benchmark (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: g cl issue Created 6 years, 4 months ago

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	1 <!doctype html>

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

	3 <container id="container"></container>

	4 <script>

	5 var N = 1000;

	6 var duration = 1000;

	7 var keyframe = 1;

	8 var targets = [];

	9

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

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

	12 container.appendChild(target);

	13 targets.push(target);

	14 }

	15

	16 function startAllAnimations() {

	17 keyframe ^= 1;

	18 targets.forEach(function(target) {

	19 target.className = 'keyframe' + keyframe;

	20 });

	21 }

	22

	23 requestAnimationFrame(startAllAnimations);

	24 setInterval(startAllAnimations, duration);

	25

	26 requestAnimationFrame(function() {

	27 window.measurementReady = true;

	28 });

	29 </script>

	30

	31 <style>

	32 body {

	33 margin: 0;

	34 overflow: hidden;

	35 }

	36 container {

	37 display: flex;

	38 flex-flow: row wrap;

	39 width: 550px;

	40 height: 800px;

	41 background: lightgoldenrodyellow;

	42 }

	43 target {

	44 display: inline-block;

	45 width: 9px; height: 9px;

	46 background: magenta;

	47 transition: opacity 1000ms linear;

	48 }

	49 .keyframe0 {

	50 opacity: 0;

	51 }

	52 .keyframe1 {

	53 opacity: 1;

	54 }

	55 </style>

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