| OLD | NEW |
|---|
| (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 } |
| 13 |
| 14 .scrolled { |
| 15 width: 180px; |
| 16 height: 90px; |
| 17 margin: 10px; |
| 18 background-color: gray; |
| 19 position: relative; |
| 20 } |
| 21 |
| 22 .positioned { |
| 23 width: 120px; |
| 24 height: 240px; |
| 25 position: absolute; |
| 26 } |
| 27 |
| 28 #firstChild { |
| 29 z-index: 1; |
| 30 } |
| 31 |
| 32 #secondChild { |
| 33 z-index: 2; |
| 34 } |
| 35 |
| 36 #predecessor { |
| 37 left: 20px; |
| 38 top: 20px; |
| 39 z-index: 0; |
| 40 background-color: green; |
| 41 } |
| 42 |
| 43 #ancestor { |
| 44 background-color: blue; |
| 45 } |
| 46 |
| 47 </style> |
| 48 <script src="resources/automatically-opt-into-composited-scrolling.js"></scrip
t> |
| 49 <script> |
| 50 if (window.testRunner) |
| 51 testRunner.dumpAsText(); |
| 52 |
| 53 if (window.internals) |
| 54 window.internals.settings.setAcceleratedCompositingForOverflowScrollEnable
d(true); |
| 55 |
| 56 function doTest() |
| 57 { |
| 58 var predecessor = document.getElementById('predecessor'); |
| 59 var ancestor = document.getElementById('ancestor'); |
| 60 var container = document.getElementById('container'); |
| 61 var firstChild = document.getElementById('firstChild'); |
| 62 var secondChild = document.getElementById('secondChild'); |
| 63 |
| 64 // Force a synchronous style recalc and layout. |
| 65 document.body.offsetTop; |
| 66 |
| 67 if (window.internals) { |
| 68 if (didOptIn(container)) |
| 69 write('Passed - correctly opted into composited scrolling with a posit
ioned ancestor.') |
| 70 else |
| 71 write('FAILED - did not opt into composited scrolling with a positione
d ancestor when it would safe.') |
| 72 } |
| 73 } // function doTest |
| 74 |
| 75 window.addEventListener('load', doTest, false); |
| 76 </script> |
| 77 </head> |
| 78 |
| 79 <body> |
| 80 <div class="positioned" id="predecessor"></div> |
| 81 <div class="positioned" id="ancestor"> |
| 82 <div class="container" id="container"> |
| 83 <div class="scrolled" id="firstChild"></div> |
| 84 <div class="scrolled" id="secondChild"></div> |
| 85 </div> |
| 86 </div> |
| 87 <pre id="console"></pre> |
| 88 </body> |
| 89 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 13722015:
Update automatically-opt-into-composited-scrolling.html (Closed)
Base URL: svn://svn.chromium.org/blink/trunk