| Index: tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_triggering_by_updating_inline_style.html
|
| diff --git a/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_triggering_by_updating_inline_style.html b/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_triggering_by_updating_inline_style.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..2e2ead97d440b660fac4571f00e2d4e707ff74de
|
| --- /dev/null
|
| +++ b/tools/perf/page_sets/tough_animation_cases/css_transitions_staggered_triggering_by_updating_inline_style.html
|
| @@ -0,0 +1,46 @@
|
| +<!DOCTYPE html>
|
| +<meta name="viewport" content="width=device-width, user-scalable=no">
|
| +<link rel="stylesheet" type="text/css" href="resources/tablet.css">
|
| +<link rel="stylesheet" type="text/css" href="resources/transition.css">
|
| +<script src="resources/perftesthelper.js"></script>
|
| +
|
| +<container id="container"></container>
|
| +
|
| +<script>
|
| +var N = PerfTestHelper.getN(1000);
|
| +var duration = 1000;
|
| +var targets = [];
|
| +var keyframeValues = [0, 1];
|
| +
|
| +for (var i = 0; i < N; i++) {
|
| + var target = document.createElement('target');
|
| + target._keyframe = 1;
|
| + target.style.opacity = keyframeValues[target._keyframe];
|
| + container.appendChild(target);
|
| + targets.push(target);
|
| +}
|
| +
|
| +function startTransition(target, fastForward) {
|
| + target._keyframe ^= 1;
|
| + target.style.opacity = keyframeValues[target._keyframe];
|
| + target.style.transitionDelay = -fastForward + 'ms';
|
| +}
|
| +
|
| +requestAnimationFrame(function(time) {
|
| + 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);
|
| +});
|
| +
|
| +PerfTestHelper.signalReady();
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 399393002:
Add CSS Transitions performance tests (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src