third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-out-of-view-scaled-iframe.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script>
   5   if (window.testRunner) {
   6     testRunner.dumpAsText();
   7     testRunner.waitUntilDone();
   8   }
   9   if (window.internals && window.eventSender) {
  10     window.internals.settings.setPreferCompositingToLCDTextEnabled(true);
  11
  12     addEventListener("load", function() {
  13       window.internals.setPageScaleFactor(0.5);
  14       setTimeout(function() {
  15         var layerTreeScaledDown = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);
  16
  17         window.internals.setPageScaleFactor(1.5);
  18         setTimeout(function() {
  19           var layerTreeScaledUp = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);
  20           // Because logical size of the frame is unchanged, the layer tree in the frame should not be affected by the page scale.
  21           document.getElementById("result").innerText =
  22               layerTreeScaledUp == layerTreeScaledDown ? "PASS" : "FAIL";
  23           testRunner.notifyDone();
  24         }, 0);
  25       }, 0);
  26     }, false);
  27   }
  28 </script>
  29 </head>
  30 <body>
  31 <iframe id="iframe" src="resources/fixed-position-out-of-view-frame.html" style="width: 800px; height: 600px"></iframe>
  32 <pre id="result"></pre>
  33 </body>
  34 </html>