third_party/WebKit/LayoutTests/fast/frames/iframe-double-scale-contents.html

   1 <html>
   2 <head>
   3     <style>
   4         ::-webkit-scrollbar {
   5             width: 0px;
   6             height: 0px;
   7         }
   8     </style>
   9     <script src="../../resources/js-test.js"></script>
  10     <script>
  11       window.enablePixelTesting = true;
  12
  13       if (window.testRunner)
  14         testRunner.waitUntilDone();
  15
  16       // Layout for the iframe will be scaled down to a quarter.
  17       // It appears this bug will only manifest itself if layout for the
  18       // iframe has not yet been computed. If we've already laid out
  19       // the iframe, then CSSStyleSelector::styleForDocument does not appear
  20       // to get called for the iframe.
  21       scalePage(0.5);
  22
  23       function scalePage(scaleFactor) {
  24           if (window.internals) {
  25             window.internals.setPageScaleFactor(scaleFactor);
  26           }
  27       }
  28
  29       function test() {
  30           // Curiously, the document style for the iframe does not
  31           // appear to be recalculated after this
  32           scalePage(1.0);
  33           document.body.offsetWidth;
  34           if (window.testRunner)
  35             testRunner.notifyDone();
  36       }
  37     </script>
  38     <script src="../../resources/js-test.js"></script>
  39 </head>
  40 <body onload="test();">
  41   <iframe id="frame" src="resources/iframe-content-scaling-bug-iframe.html" style="position: absolute; left: 0px; top: 0px; border: none; width: 300px; height: 300px;"></iframe>
  42   <div id="rightbox" style="position: absolute; left: 300px; top: 0px; width: 300px; height: 300px; background-color: green;"></div>
  43 </body>
  44 </html>