| Index: tools/perf/page_sets/perf_week/css-transitions-staggered-triggering-by-updating-class.html
|
| diff --git a/tools/perf/page_sets/perf_week/css-transitions-staggered-triggering-by-updating-class.html b/tools/perf/page_sets/perf_week/css-transitions-staggered-triggering-by-updating-class.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..1cbc4dd59326711fcb61e954265182859b0d4f61
|
| --- /dev/null
|
| +++ b/tools/perf/page_sets/perf_week/css-transitions-staggered-triggering-by-updating-class.html
|
| @@ -0,0 +1,65 @@
|
| +<!doctype html>
|
| +<meta name="viewport" content="width=device-width, user-scalable=no">
|
| +<container id="container"></container>
|
| +<script>
|
| +var N = 1000;
|
| +var duration = 1000;
|
| +var targets = [];
|
| +
|
| +for (var i = 0; i < N; i++) {
|
| + var target = document.createElement('target');
|
| + target._keyframe = 1;
|
| + target.className = 'keyframe' + target._keyframe;
|
| + container.appendChild(target);
|
| + targets.push(target);
|
| +}
|
| +
|
| +function startTransition(target, fastForward) {
|
| + target._keyframe ^= 1;
|
| + target.className = 'keyframe' + target._keyframe;
|
| + target.style.transitionDelay = -fastForward + 'ms';
|
| +}
|
| +
|
| +requestAnimationFrame(function(time) {
|
| + window.measurementReady = true;
|
| + var startTime = time - duration;
|
| + var step = 0;
|
| +
|
| + function staggeredStart(time) {
|
| + var elapsed = time - startTime;
|
| + var targetStep = Math.floor(N * elapsed / duration);
|
| + step = Math.max(targetStep - N, step);
|
| + for (; step < targetStep; step++) {
|
| + startTransition(targets[step % N], elapsed - (step / N * duration));
|
| + }
|
| + requestAnimationFrame(staggeredStart);
|
| + }
|
| + staggeredStart(time);
|
| +});
|
| +</script>
|
| +
|
| +<style>
|
| +body {
|
| + margin: 0;
|
| + overflow: hidden;
|
| +}
|
| +container {
|
| + display: flex;
|
| + flex-flow: row wrap;
|
| + width: 550px;
|
| + height: 800px;
|
| + background: lightgoldenrodyellow;
|
| +}
|
| +target {
|
| + display: inline-block;
|
| + width: 9px; height: 9px;
|
| + background: magenta;
|
| + transition: opacity 1000ms linear;
|
| +}
|
| +.keyframe0 {
|
| + opacity: 0;
|
| +}
|
| +.keyframe1 {
|
| + opacity: 1;
|
| +}
|
| +</style>
|
|
|
Chromium Code Reviews
Issue 402433004:
Test adding perf week tests as smoothness benchmark (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src