| Index: LayoutTests/compositing/layer-creation/should-invoke-deferred-compositing.html
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| diff --git a/LayoutTests/compositing/layer-creation/should-invoke-deferred-compositing.html b/LayoutTests/compositing/layer-creation/should-invoke-deferred-compositing.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..75225eac11aaa791befa55fb3f5e26b59b56af76
|
| --- /dev/null
|
| +++ b/LayoutTests/compositing/layer-creation/should-invoke-deferred-compositing.html
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| @@ -0,0 +1,84 @@
|
| +<!DOCTYPE html>
|
| +
|
| +<!-- crbug.com/336676 - layer creation should not accidentally skip requesting
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| + the compositor for a frame to be produced. When there were no other
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| + repaints or layout/style changes, the simple act of adding a layer was not
|
| + triggering compositing updates by itself. To recreate this scenario, an
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| + out-of-flow canvas element is added to an empty composited layer. The
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| + actual container layer does not get added to the tree until it realizes
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| + that it receives the canvas content. -->
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| +
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| +
|
| +<html>
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| +<head>
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| +<style>
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| +
|
| +.composited {
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| + -webkit-transform: translatez(0);
|
| +}
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| +
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| +.box {
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| + position: absolute;
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| + z-index: 1;
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| + width: 300px;
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| + height: 300px;
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| + top: 0px;
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| + left: 0px;
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| +}
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| +
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| +canvas {
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| + position: absolute;
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| + z-index: 1;
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| + top: 0px;
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| + left: 0px;
|
| +}
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| +
|
| +</style>
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| +
|
| +<script>
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| +
|
| + if (window.testRunner)
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| + testRunner.dumpAsText();
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| +
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| +
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| + var canvasElement;
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| +
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| + function addCanvasToTree() {
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| + document.getElementById("container").appendChild(canvasElement);
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| + }
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| +
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| + function runTest() {
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| + canvasElement = document.createElement("canvas");
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| + canvasElement.width = 200;
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| + canvasElement.height = 200;
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| + var context = canvasElement.getContext("2d");
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| + context.fillStyle = "green";
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| + context.fillRect(80, 80, 50, 50);
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| +
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| + if (!window.testRunner) {
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| + // If the test is being run interactively, then
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| + // the canvas should correctly appear after 1 second.
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| + setTimeout(addCanvasToTree, 1000);
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| + return;
|
| + }
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| +
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| + testRunner.display();
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| +
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| + // This should initiate a compositor frame via scheduleAnimation().
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| + addCanvasToTree();
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| +
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| + if (window.internals.isCompositorFramePending(document))
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| + document.getElementById("result").innerHTML = "PASS - did schedule animation";
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| + else
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| + document.getElementById("result").innerHTML = "FAIL - did not schedule animation";
|
| + }
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| +
|
| +</script>
|
| +</head>
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| +
|
| +<body onload="runTest()">
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| + <div id="container" class="composited box"></div>
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| + <div id="result">The green box should appear after 1 second when running this test interactively.</div>
|
| +</body>
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| +
|
| +</html>
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|
|
Chromium Code Reviews
Issue 139103009:
If a compositing update is declared as needed, scheduleAnimation should be triggered. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk