| <html> |
| <head> |
| <script src="../../resources/run-after-layout-and-paint.js"></script> |
| <style> |
| #clipper { |
| width: 550px; |
| height: 550px; |
| overflow:hidden; |
| } |
| |
| #trigger { |
| /* Only overlap with the contents element, not the stretch element */ |
| will-change:transform; |
| position: absolute; |
| top: 0px; |
| left: 0px; |
| width: 500px; |
| height: 200px; |
| } |
| |
| #container { |
| /* Force compositing for this layer if any children get composited */ |
| transform:translate(0px, 1px); |
| } |
| |
| #negative { |
| /* Trigger foreground layer from container */ |
| z-index: -1; |
| position: absolute; |
| } |
| |
| #contents { |
| /* foreground layer contents */ |
| width: 550px; |
| height: 550px; |
| background-color: green; |
| } |
| |
| /* Move this element to stretch container to have a negative offset */ |
| #stretch { |
| position: absolute; |
| background-color: blue; |
| top: 200px; |
| left: -200px; |
| width: 50px; |
| height: 50px; |
| } |
| |
| </style> |
| <script> |
| function doTest() |
| { |
| runAfterLayoutAndPaint(function() { |
| document.getElementById("stretch").style.left = "-100px"; |
| }, true); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div id="trigger"></div> |
| <div id="clipper"> |
| <div id="container"> |
| <img id="contents"> |
| <div id="stretch"></div> |
| <div id="negative"></div> |
| </div> |
| </div> |
| </body> |
