| <!-- This test asserts that blit-scrolling is disabled when blur is applied on a layer |
| that contains an intermediate layer which has a fixed positioned object inside. |
| One fixed black bar should be visible at the top of the page. The page should be scrolled |
| 100px and no red should be visible. The rest of the page should be green. |
| --> |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| </script> |
| <!-- Make sure the mock scrollbars are enabled after the call to overridePreference, otherwise the setting will be overwritten. --> |
| <script src="../../compositing/resources/mock_scrollbars.js"></script> |
| <style> |
| body { |
| margin: 0px; |
| border: 0px; |
| padding: 0px; |
| } |
| |
| .blur { |
| filter: blur(1px); |
| } |
| |
| .layer { |
| /* Using very subtle grayscale to keep the green & red still visible. */ |
| filter: grayscale(0.1); |
| } |
| |
| #fixedBox { |
| position: fixed; |
| background-color: #000000; |
| height: 100px; |
| width: 100%; |
| } |
| |
| #redBox { |
| background-color: red; |
| height: 200px; |
| } |
| |
| #greenBox { |
| background-color: green; |
| height: 1000px; |
| } |
| </style> |
| <script src="../../resources/run-after-layout-and-paint.js"></script> |
| <script type="text/javascript"> |
| function repaintTest() { |
| runAfterLayoutAndPaint(function() { |
| window.scrollTo(0, 100); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| } |
| </script> |
| </head> |
| <body onload="repaintTest()"> |
| <div class="blur"> |
| <div class="layer"> |
| <div id="fixedBox"></div> |
| <div id="redBox"></div> |
| <div id="greenBox"></div> |
| </div> |
| </div> |
| </body> |
| </html> |
