| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| .box { | |
| width: 120px; | |
| height: 100px; | |
| background-color: blue; | |
| margin: 100px 100px; | |
| position: relative; | |
| box-shadow: 0 0 10px black; | |
| transition: transform 5s; | |
| transform: translateX(-400px); | |
| } | |
| .sublayer { | |
| width: 20px; | |
| height: 20px; | |
| background-color: green; | |
| position: relative; | |
| box-shadow: 0 0 10px black; | |
| will-change: transform; | |
| } | |
| body.changed .box { | |
| transform: translateX(0px); | |
| } | |
| </style> | |
| <script> | |
| if (window.testRunner) { | |
| testRunner.dumpAsText(); | |
| testRunner.waitUntilDone(); | |
| } | |
| function dumpLayers() | |
| { | |
| if (window.testRunner) { | |
| output.innerText = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED); | |
| testRunner.notifyDone(); | |
| } | |
| } | |
| window.addEventListener("load", function() { | |
| document.body.classList.add('changed'); | |
| window.setTimeout(dumpLayers, 0); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div class="box"> | |
| <div class="sublayer"></div> | |
| </div> | |
| <pre id="output"></pre> | |
| </body> | |
| </html> |