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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
2 "http://www.w3.org/TR/html4/loose.dtd"> | |
3 | |
4 <html lang="en"> | |
5 <head> | |
6 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> | |
7 <title>Composited scrolling creates a stacking context.</title> | |
8 <style type="text/css" media="screen"> | |
9 .container { | |
10 width: 200px; | |
11 height: 200px; | |
12 overflow: scroll; | |
13 margin: 20px; | |
14 border: 1px solid black; | |
15 } | |
16 | |
17 .composited { | |
18 width: 200px; | |
19 height: 150px; | |
20 -webkit-transform: translateZ(0); | |
21 background-color: green; | |
22 } | |
23 | |
24 .not-composited { | |
25 width: 200px; | |
26 height: 150px; | |
27 background-color: blue; | |
28 } | |
29 | |
30 .in-flow-positioned { | |
31 position: relative; | |
32 display: block; | |
33 } | |
34 | |
35 .fixed { | |
36 z-index: -1; | |
37 position: absolute; | |
38 width: 200px; | |
39 height: 300px; | |
40 background-color: red; | |
41 } | |
42 </style> | |
43 <script type="text/javascript" charset="utf-8"> | |
44 if (window.testRunner) | |
45 testRunner.dumpAsText(); | |
46 | |
47 if (window.internals) | |
48 window.internals.settings.setAcceleratedCompositingForOverflowScrollEnable
d(true); | |
49 | |
50 function doTest() | |
51 { | |
52 document.body.offsetTop; | |
53 | |
54 if (window.internals) { | |
55 var layerTree = window.internals.layerTreeAsText(document); | |
56 var pre = document.getElementById('console'); | |
57 var text = document.createTextNode(layerTree + '\n'); | |
58 pre.appendChild(text); | |
59 } | |
60 } | |
61 | |
62 window.addEventListener('load', doTest, false); | |
63 </script> | |
64 </head> | |
65 <body> | |
66 <div class="container"> | |
67 <div class="in-flow-positioned"> | |
68 <div class="fixed"></div> | |
69 </div> | |
70 <div class="composited"></div> | |
71 <div class="not-composited"></div> | |
72 </div> | |
73 <pre id="console"></pre> | |
74 </body> | |
75 </html> | |
76 | |
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