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comparison: dom/events/test/test_bug607464.html
dom/events/test/test_bug607464.html
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| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <!-- | |
| 4 https://bugzilla.mozilla.org/show_bug.cgi?id=607464 | |
| 5 --> | |
| 6 <head> | |
| 7 <title>Test for Bug 607464</title> | |
| 8 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 9 <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script> | |
| 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> | |
| 11 </head> | |
| 12 <body> | |
| 13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=607464">Mozilla Bug 607464</a> | |
| 14 <p id="display"></p> | |
| 15 <div id="content" style="display: none"> | |
| 16 | |
| 17 </div> | |
| 18 <pre id="test"> | |
| 19 <script type="application/javascript;version=1.7"> | |
| 20 | |
| 21 /** | |
| 22 * Test for Bug 607464: | |
| 23 * Pixel scrolling shouldn't scroll smoothly, even if general.smoothScroll is on. | |
| 24 **/ | |
| 25 | |
| 26 function scrollDown15PxWithPixelScrolling(scrollbox) { | |
| 27 var win = scrollbox.ownerDocument.defaultView; | |
| 28 let event = { | |
| 29 deltaMode: WheelEvent.DOM_DELTA_PIXEL, | |
| 30 deltaY: 3.0, | |
| 31 lineOrPageDeltaY: 1 | |
| 32 }; | |
| 33 // A pixel scroll with lineOrPageDeltaY. | |
| 34 synthesizeWheel(scrollbox, 10, 10, event, win); | |
| 35 // then 4 pixel scrolls without lineOrPageDeltaY. | |
| 36 event.lineOrPageDeltaY = 0; | |
| 37 for (let i = 0; i < 4; ++i) { | |
| 38 synthesizeWheel(scrollbox, 10, 10, event, win); | |
| 39 } | |
| 40 | |
| 41 // Note: the line scroll shouldn't have any effect because it has | |
| 42 // hasPixels = true set on it. We send it to emulate normal | |
| 43 // behavior. | |
| 44 } | |
| 45 | |
| 46 function runTest() { | |
| 47 var win = open('data:text/html,<!DOCTYPE html>\n' + | |
| 48 '<div id="scrollbox" style="height: 100px; overflow: auto;">' + | |
| 49 ' <div style="height: 1000px;"></div>' + | |
| 50 '</div>', '_blank', 'width=300,height=300'); | |
| 51 SimpleTest.waitForFocus(function () { | |
| 52 var scrollbox = win.document.getElementById("scrollbox"); | |
| 53 let scrollTopBefore = scrollbox.scrollTop; | |
| 54 | |
| 55 scrollDown15PxWithPixelScrolling(scrollbox); | |
| 56 | |
| 57 // wait for the next refresh driver run | |
| 58 window.mozRequestAnimationFrame(function() { | |
| 59 // actually, wait for the next one before checking results, since | |
| 60 // scrolling might not be flushed until after this code has run | |
| 61 window.mozRequestAnimationFrame(function() { | |
| 62 is(scrollbox.scrollTop, scrollTopBefore + 15, | |
| 63 "Pixel scrolling should have finished after one refresh driver iteration. " + | |
| 64 "We shouldn't be scrolling smoothly, even though the pref is set."); | |
| 65 win.close(); | |
| 66 clearPrefs(); | |
| 67 SimpleTest.finish(); | |
| 68 }); | |
| 69 }); | |
| 70 }, win); | |
| 71 } | |
| 72 | |
| 73 function initPrefs() | |
| 74 { | |
| 75 // Disables the app level scroll acceleration | |
| 76 SpecialPowers.setIntPref("mousewheel.acceleration.start", -1); | |
| 77 SpecialPowers.setBoolPref("mousewheel.system_scroll_override_on_root_content.enabled", false); | |
| 78 | |
| 79 // Enables smooth scrolling | |
| 80 SpecialPowers.setBoolPref("general.smoothScroll", true); | |
| 81 } | |
| 82 | |
| 83 function clearPrefs() | |
| 84 { | |
| 85 SpecialPowers.clearUserPref("mousewheel.acceleration.start"); | |
| 86 SpecialPowers.clearUserPref("mousewheel.system_scroll_override_on_root_content.enabled"); | |
| 87 SpecialPowers.clearUserPref("general.smoothScroll"); | |
| 88 } | |
| 89 | |
| 90 window.onload = function () { | |
| 91 initPrefs(); | |
| 92 SimpleTest.executeSoon(runTest); | |
| 93 } | |
| 94 | |
| 95 SimpleTest.waitForExplicitFinish(); | |
| 96 | |
| 97 </script> | |
| 98 </pre> | |
| 99 | |
| 100 </body> | |
| 101 </html> |
