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1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
2 | 2 |
3 <!-- | 3 <!-- |
4 This test checks that accelerated scrolling layers can be scrolled without | 4 This test checks that accelerated scrolling layers can be scrolled without |
5 repainting their contents. See https://bugs.webkit.org/show_bug.cgi?id=96087. | 5 repainting their contents. See https://bugs.webkit.org/show_bug.cgi?id=96087. |
6 --> | 6 --> |
7 | 7 |
8 <html> | 8 <html> |
9 <head> | 9 <head> |
10 <style type="text/css"> | 10 <style type="text/css"> |
11 #scroller { | 11 #scroller { |
12 overflow: scroll; | 12 overflow: scroll; |
13 -webkit-overflow-scrolling: touch; | 13 -webkit-overflow-scrolling: touch; |
14 width: 200px; | 14 width: 200px; |
15 height: 200px; | 15 height: 200px; |
16 border: solid thin blue; | 16 border: solid thin blue; |
17 } | 17 } |
18 | 18 |
19 #content { | 19 #content { |
20 height: 1000px; | 20 height: 1000px; |
21 margin-top: 25px; | 21 margin-top: 25px; |
22 } | 22 } |
23 </style> | 23 </style> |
24 <script src="../../fast/repaint/resources/text-based-repaint.js"></script> | |
25 <script type="text/javascript"> | 24 <script type="text/javascript"> |
26 if (window.internals) | 25 onload = function() { |
27 window.internals.settings.setPreferCompositingToLCDTextEnabled(true); | |
28 | |
29 function repaintTest() { | |
30 // Scroll down. This should not cause any more repaints to the | |
31 // scrolling contents. | |
32 document.getElementById('scroller').scrollTop = 25; | 26 document.getElementById('scroller').scrollTop = 25; |
33 } | 27 }; |
34 | |
35 runRepaintTest(); | |
36 </script> | 28 </script> |
37 </head> | 29 </head> |
38 <body> | 30 <body> |
39 <div id="scroller"> | 31 <div id="scroller"> |
40 <div id="content"></div> | 32 <div id="content"></div> |
41 </div> | 33 </div> |
42 </body> | 34 </body> |
43 </html> | 35 </html> |
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