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Side by Side Diff: LayoutTests/compositing/sticky-compositing.html

Issue 24210010: Add layout test to verify that compositing is sticky. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 7 years, 3 months ago
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1 <body>
2 <p>First layer tree:</p>
3 <p id='tree1'></p>
4 <p>Second layer tree:</p>
5 <p id='tree2'></p>
6 <p>Third layer tree:</p>
7 <p id='tree3'></p>
8 <script>
9 testRunner.dumpAsText();
10
11 // Dump the tree (should be empty because compositing hasn't been trigge red)
12 if (window.testRunner)
13 document.getElementById('tree1').innerHTML = window.internals.layerT reeAsText(document);
14
15 // Trigger compositing by adding a div with translateZ(0)
16 var compositing_div = document.createElement("div");
17 compositing_div.id = "compositing_div";
18 compositing_div.style.webkitTransform = "translateZ(0)";
19 compositing_div.innerText = "compositing trigger";
20 document.body.appendChild(compositing_div);
21
22 // Dump the tree (should be filled because compositing is triggered)
23 if (window.testRunner)
24 document.getElementById('tree2').innerHTML = window.internals.layerT reeAsText(document);
25
26 // Remove the compositing trigger.
27 document.body.removeChild(compositing_div);
28 delete compositing_div;
29
30 // Dump the tree (should stay filled because compositing is sticky, even though the trigger is gone.)
31 if (window.testRunner) {
32 document.getElementById('tree3').innerHTML = window.internals.layerTre eAsText(document);
33 testRunner.notifyDone();
34 }
35 </script>
36 </body>
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