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| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <style> |
| 5 .set { |
| 6 position: absolute; |
| 7 top: 8px; |
| 8 } |
| 9 .box { |
| 10 height: 100px; |
| 11 width: 100px; |
| 12 background-color: blue; |
| 13 } |
| 14 |
| 15 .hidden { |
| 16 visibility: hidden; |
| 17 } |
| 18 |
| 19 .container.hidden { |
| 20 outline: 4px solid red; |
| 21 } |
| 22 |
| 23 .visible { |
| 24 visibility: visible; |
| 25 } |
| 26 .should-be-hidden { |
| 27 background-color: red !important; |
| 28 } |
| 29 .should-be-visible { |
| 30 background-color: green !important; |
| 31 } |
| 32 .composited { |
| 33 -webkit-transform: translateZ(1px); |
| 34 } |
| 35 |
| 36 .visible-indicator { |
| 37 background-color: green; |
| 38 } |
| 39 |
| 40 .hidden-indicator { |
| 41 background-color: red; |
| 42 } |
| 43 </style> |
| 44 <script> |
| 45 if (window.testRunner) |
| 46 testRunner.waitUntilDone(); |
| 47 requestAnimationFrame(function() { |
| 48 requestAnimationFrame(function() { |
| 49 document.getElementById('target').classList.add('visible'); |
| 50 setTimeout(function() { |
| 51 if (window.testRunner) |
| 52 testRunner.notifyDone(); |
| 53 }); |
| 54 }); |
| 55 }); |
| 56 </script> |
| 57 </head> |
| 58 <body> |
| 59 <!-- Tests that making a child of a composited layer visible causes that child
to actually paint --> |
| 60 <div class="set"> |
| 61 <div class="hidden-indicator box"></div> |
| 62 <div class="visible-indicator box"></div> |
| 63 <div class="hidden-indicator box"></div> |
| 64 </div> |
| 65 |
| 66 <div class="set"> |
| 67 <div class="hidden container composited"> |
| 68 <div class="visible box should-be-visible"></div> |
| 69 </div> |
| 70 |
| 71 <div class="hidden container composited"> |
| 72 <div class="box should-be-hidden"></div> |
| 73 </div> |
| 74 |
| 75 <div class="hidden container composited"> |
| 76 <div id="target" class="box should-be-visible"></div> |
| 77 </div> |
| 78 </div> |
| 79 </body> |
| 80 </html> |
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