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

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Side by Side Diff: tools/perf/page_sets/perf_week/css-transitions-simultaneous-by-inserting-style-element.html

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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(Empty)
	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 style = null;

	8 var keyframe = 1;

	9 var keyframeValues = [0, 1]

	10

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

	12 container.appendChild(document.createElement('target'));

	13 }

	14

	15 function startAllAnimations() {

	16 keyframe ^= 1;

	17 if (style) {

	18 style.remove();

	19 }

	20 style = document.createElement('style');

	21 style.textContent = 'target { opacity: ' + keyframeValues[keyframe] + '; }';

	22 container.appendChild(style);

	23 }

	24

	25 requestAnimationFrame(startAllAnimations);

	26 setInterval(startAllAnimations, duration);

	27

	28 requestAnimationFrame(function() {

	29 window.measurementReady = true;

	30 });

	31 </script>

	32

	33 <style>

	34 body {

	35 margin: 0;

	36 overflow: hidden;

	37 }

	38 container {

	39 display: flex;

	40 flex-flow: row wrap;

	41 width: 550px;

	42 height: 800px;

	43 background: lightgoldenrodyellow;

	44 }

	45 target {

	46 display: inline-block;

	47 width: 9px; height: 9px;

	48 background: magenta;

	49 transition: opacity 1000ms linear;

	50 }

	51 </style>

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