| <!DOCTYPE html> |
| <style> |
| /* To ensure full viewport repaint when viewport is resized. */ |
| body { |
| background-image: linear-gradient(red, blue); |
| background-attachment: fixed; |
| margin: 0; |
| } |
| #container { |
| width: 200px; |
| height: 200px; |
| border: 1px solid black; |
| overflow: scroll; |
| } |
| #child { |
| width: 100px; |
| height: 100px; |
| } |
| </style> |
| <script src="../resources/text-based-repaint.js" type="text/javascript"></script> |
| <script> |
| if (window.testRunner) { |
| testRunner.useUnfortunateSynchronousResizeMode(); |
| } |
| function repaintTest() { |
| // Invalidation of horizontal scrollbar should be tracked. |
| document.getElementById('child').style.width = '2000px'; |
| } |
| window.onload = function() { |
| // Trigger a full viewport repaint to test if scrollbar damages are cleared |
| // even if we shortcut children invalidations. |
| window.resizeTo(1000, 600); |
| // Invalidation of vertical scrollbar before the repaint test should not be tracked during repaintTest(). |
| document.getElementById('child').style.height = '2000px'; |
| runRepaintAndPixelTest(); |
| }; |
| </script> |
| <div style="height: 50px"> |
| Tests if scrollbar damage flag is cleared during a full viewport invalidation. |
| Passes if the result repaint rects contain the horizontal scrollbar but not the vertical scrollbar. |
| </div> |
| <div id="container"> |
| <div id="child"></div> |
| </div> |
