Chromium Code Reviews| OLD | NEW |
|---|---|
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| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <head> | |
|
esprehn
2014/02/27 20:58:31
We often leave off the <html>, <head> and <body> e
| |
| 4 <style> | |
| 5 #container { | |
| 6 will-change: top; | |
| 7 position: absolute; | |
| 8 left: 200px; | |
| 9 top: 100px; | |
| 10 width: 100px; | |
| 11 height: 100px; | |
| 12 background-color: blue; | |
| 13 } | |
| 14 | |
| 15 .fixed { | |
| 16 position: fixed; | |
| 17 left: 50px; | |
| 18 top: 50px; | |
| 19 width: 75px; | |
| 20 height: 75px; | |
| 21 background-color: green | |
| 22 } | |
| 23 </style> | |
| 24 <script type="text/javascript"> | |
| 25 if (window.testRunner) { | |
| 26 testRunner.waitUntilDone(); | |
| 27 } | |
| 28 | |
| 29 function doTest() | |
| 30 { | |
| 31 if (window.internals) { | |
| 32 window.internals.forceCompositingUpdate(document); | |
| 33 } | |
| 34 // Adding "will-change: -webkit-transform" to the container div should | |
| 35 // make this div become the containing block for its fixed position | |
| 36 // descendant. | |
| 37 document.getElementById("container").style.willChange = "-webkit-transform "; | |
| 38 if (window.testRunner) { | |
| 39 testRunner.notifyDone(); | |
| 40 } | |
| 41 } | |
| 42 | |
| 43 window.addEventListener('load', doTest, false); | |
| 44 </script> | |
| 45 </head> | |
| 46 | |
| 47 <body> | |
| 48 <div id="container"> | |
| 49 <div class="fixed"></div> | |
| 50 </div> | |
| 51 </body> | |
| 52 | |
| 53 </html> | |
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