| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| .box { |
| height: 100px; |
| width: 100px; |
| margin: 30px; |
| background-color: blue; |
| } |
| |
| .shadowed { |
| box-shadow: 10px 10px 20px black; |
| } |
| </style> |
| |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| function doTest() |
| { |
| if (!window.testRunner || !window.internals) |
| return; |
| |
| window.internals.startTrackingRepaints(); |
| document.getElementById('box').classList.add('shadowed'); |
| document.getElementById('repaints').textContent = window.internals.repaintRectsAsText(); |
| window.internals.stopTrackingRepaints(); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| |
| <div id="box" class="box"> |
| </div> |
| |
| <h2>Repaint rects:</h2> |
| <pre id="repaints"></pre> |
| </body> |
| </html> |
