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|---|
| (Empty) |
| 1 <!DOCTYPE html> | |
| 2 | |
| 3 <html> | |
| 4 <head> | |
| 5 <style> | |
| 6 #container { | |
| 7 width: 200px; | |
| 8 height: 200px; | |
| 9 overflow: scroll; | |
| 10 margin: 20px; | |
| 11 border: 1px solid black; | |
| 12 background-color: #00FFFF; | |
| 13 } | |
| 14 | |
| 15 .scrolled { | |
| 16 width: 800px; | |
| 17 height: 30px; | |
| 18 margin: 10px; | |
| 19 top: 70px; | |
| 20 background-color: gray; | |
| 21 position: relative; | |
| 22 } | |
| 23 | |
| 24 .positioned { | |
| 25 width: 120px; | |
| 26 height: 240px; | |
| 27 position: absolute; | |
| 28 } | |
| 29 | |
| 30 #predecessor { | |
| 31 left: 20px; | |
| 32 top: 20px; | |
| 33 background-color: #990066; | |
| 34 } | |
| 35 </style> | |
| 36 <script src='resources/automatically-opt-into-composited-scrolling.js'></scr
ipt> | |
| 37 <script> | |
| 38 if (window.testRunner) | |
| 39 testRunner.dumpAsText(); | |
| 40 | |
| 41 if (window.internals) { | |
| 42 window.internals.settings.setAcceleratedCompositingForOverflowScroll
Enabled(true); | |
| 43 window.internals.settings.setCompositorDrivenAcceleratedScrollingEna
bled(false); | |
| 44 } | |
| 45 | |
| 46 function doTest() | |
| 47 { | |
| 48 if (!window.internals) | |
| 49 return; | |
| 50 | |
| 51 var predecessor = document.getElementById('predecessor'); | |
| 52 var container = document.getElementById('container'); | |
| 53 predecessor.style.display = 'none'; | |
| 54 window.internals.forceCompositingUpdate(document); | |
| 55 | |
| 56 var pass = true; | |
| 57 if (!didOptIn(container)) { | |
| 58 pass = false; | |
| 59 write('FAIL - did not opt in when our children are contiguous.')
; | |
| 60 } | |
| 61 | |
| 62 predecessor.style.display = ''; | |
| 63 window.internals.forceCompositingUpdate(document); | |
| 64 | |
| 65 if (didOptIn(container)) { | |
| 66 pass = false; | |
| 67 write('FAIL - opted in when our children are not contiguous.'); | |
| 68 } | |
| 69 | |
| 70 if (pass) | |
| 71 write('PASS'); | |
| 72 } | |
| 73 | |
| 74 window.addEventListener('load', doTest, false); | |
| 75 </script> | |
| 76 </head> | |
| 77 | |
| 78 <body> | |
| 79 <div> | |
| 80 <div class='positioned' id='predecessor'></div> | |
| 81 <div id='container'> | |
| 82 <div class='scrolled'></div> | |
| 83 </div> | |
| 84 </div> | |
| 85 <pre id='console'></pre> | |
| 86 </body> | |
| 87 </html> | |
| OLD | NEW |
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Chromium Code Reviews
Issue 244193002:
Enable universal accelerated overflow scroll (Closed)
Base URL: svn://svn.chromium.org/blink/trunk