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comparison: layout/base/tests/chrome/test_transformed_scrolling_repaints.html
layout/base/tests/chrome/test_transformed_scrolling_repaints.html
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| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test that scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them</title> | |
| 5 <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script> | |
| 6 <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js"></script> | |
| 7 <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/> | |
| 8 </head> | |
| 9 <!-- Need a timeout here to allow paint unsuppression before we start the test --> | |
| 10 <body onload="setTimeout(startTest,0)"> | |
| 11 <div id="t" style="-moz-transform: scale(1.2, 1.2); -moz-transform-origin:top left; width:200px; height:100px; background:yellow; overflow:hidden"> | |
| 12 <div style="height:40px;">Hello</div> | |
| 13 <div id="e" style="height:30px; background:lime">Kitty</div> | |
| 14 <div style="height:300px; background:yellow">Kitty</div> | |
| 15 </div> | |
| 16 <pre id="test"> | |
| 17 <script type="application/javascript"> | |
| 18 SimpleTest.waitForExplicitFinish(); | |
| 19 | |
| 20 var t = document.getElementById("t"); | |
| 21 var e = document.getElementById("e"); | |
| 22 var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor). | |
| 23 getInterface(Components.interfaces.nsIDOMWindowUtils); | |
| 24 const isLinux = navigator.platform.indexOf("Linux") >= 0; | |
| 25 const is64 = navigator.platform.indexOf("x86_64") >= 0; | |
| 26 var winLowerThanVista = navigator.platform.indexOf("Win") == 0; | |
| 27 if (winLowerThanVista) { | |
| 28 var version = Components.classes["@mozilla.org/system-info;1"] | |
| 29 .getService(Components.interfaces.nsIPropertyBag2) | |
| 30 .getProperty("version"); | |
| 31 winLowerThanVista = parseFloat(version) < 6.0; | |
| 32 } | |
| 33 | |
| 34 function startTest() { | |
| 35 // Do a couple of scrolls to ensure we've triggered activity heuristics. | |
| 36 waitForAllPaintsFlushed(function () { | |
| 37 t.scrollTop = 5; | |
| 38 waitForAllPaintsFlushed(function () { | |
| 39 t.scrollTop = 10; | |
| 40 waitForAllPaintsFlushed(function () { | |
| 41 // Clear paint state now and scroll again. | |
| 42 utils.checkAndClearPaintedState(e); | |
| 43 t.scrollTop = 15; | |
| 44 waitForAllPaintsFlushed(function () { | |
| 45 var painted = utils.checkAndClearPaintedState(e); | |
| 46 if ((isLinux && !is64) || winLowerThanVista) { | |
| 47 todo(false, "Fully-visible scrolled element should not have been painted (random on Linux-32)"); | |
| 48 } else { | |
| 49 is(painted, false, "Fully-visible scrolled element should not have been painted"); | |
| 50 } | |
| 51 SimpleTest.finish(); | |
| 52 }); | |
| 53 }); | |
| 54 }); | |
| 55 }); | |
| 56 } | |
| 57 </script> | |
| 58 </pre> | |
| 59 </body> | |
| 60 </html> |
