src/third_party/WebKit/LayoutTests/compositing/squashing/resize-squashing-layer-that-needs-full-repaint.html

   1 <!doctype html>
   2 <script src="../../fast/repaint/resources/text-based-repaint.js"></script>
   3
   4 <!-- The second two divs form a combined squashing layer. display:none'ing the first of them will resize the squashing layer. -->
   5 <div style="width: 500px; height: 500px; transform: translateZ(0)"></div>
   6 <div style="position: absolute; top: 55px; left: 55px; width: 500px; height: 500px; background-color: lightblue"></div>
   7 <div id="to-be-removed" style="position: absolute; top: 0px; left: 0px; width: 50px; height: 50px; background-color: lightgray"></div>
   8
   9 <script>
  10 // This test checks that resizing a squashing layer such that the offset of content squashed into it relative to the squashing
  11 // container causes a repaint of its bounds within the updated squashing layer geometry.
  12 if (window.internals)
  13     internals.settings.setLayerSquashingEnabled(true);
  14
  15 function repaintTest() {
  16     document.querySelector("#to-be-removed").style.display = 'none';
  17 }
  18
  19 runRepaintTest();
  20 </script>