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Issue 191693002: Delay scrollContents until the next paint (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: fix nit Created 6 years, 9 months ago
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1 <!DOCTYPE html> 1 <!DOCTYPE html>
2 <html> 2 <html>
3 <head> 3 <head>
4 <script src="../../resources/run-after-display.js"></script>
4 <style> 5 <style>
5 6
6 #backgroundFixed { 7 #backgroundFixed {
7 -webkit-transform: translatez(0); 8 -webkit-transform: translatez(0);
8 position: fixed; 9 position: fixed;
9 height: 400px; 10 height: 400px;
10 width: 400px; 11 width: 400px;
11 z-index: 1; 12 z-index: 1;
12 background-color: gray; 13 background-color: gray;
13 } 14 }
(...skipping 38 matching lines...) Expand 10 before | Expand all | Expand 10 after
52 display: none; 53 display: none;
53 } 54 }
54 55
55 body { 56 body {
56 margin: 0; 57 margin: 0;
57 } 58 }
58 59
59 </style> 60 </style>
60 61
61 <script> 62 <script>
62 if (window.testRunner) 63 if (window.testRunner) {
63 testRunner.dumpAsText(); 64 testRunner.dumpAsText();
65 testRunner.waitUntilDone();
66 }
64 67
65 if (window.internals) 68 if (window.internals)
66 internals.settings.setLayerSquashingEnabled(true); 69 internals.settings.setLayerSquashingEnabled(true);
67 70
68 function runTest() 71 function runTest()
69 { 72 {
70 if (!window.internals) 73 if (!window.internals)
71 return; 74 return;
72 75
73 // Case 1 76 // Case 1
74 document.getElementById('Case1').textContent = window.internals.layerTre eAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS); 77 document.getElementById('Case1').textContent = window.internals.layerTre eAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
75 78
76 // Case 2 79 // Case 2
77 window.internals.startTrackingRepaints(document); 80 window.internals.startTrackingRepaints(document);
78 window.scrollTo(0, 10); 81 window.scrollTo(0, 10);
79 document.getElementById('Case2').textContent = window.internals.layerTre eAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS); 82 runAfterDisplay(function() {
80 window.internals.stopTrackingRepaints(document); 83 document.getElementById('Case2').textContent = window.internals.layerT reeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
84 window.internals.stopTrackingRepaints(document);
81 85
82 // Case 3 86 // Case 3
83 window.internals.startTrackingRepaints(document); 87 window.internals.startTrackingRepaints(document);
84 window.scrollTo(0, 110); 88 window.scrollTo(0, 110);
85 document.getElementById('Case3').textContent = window.internals.layerTre eAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS); 89 runAfterDisplay(function() {
86 window.internals.stopTrackingRepaints(document); 90 document.getElementById('Case3').textContent = window.internals.laye rTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
91 window.internals.stopTrackingRepaints(document);
87 92
88 // Display the test results only after test is done so that it does not affect repaint rect results. 93 // Display the test results only after test is done so that it does not affect repaint rect results.
89 document.getElementById('testResults').style.display = "block"; 94 document.getElementById('testResults').style.display = "block";
95
96 if (window.testRunner)
97 testRunner.notifyDone();
98 });
99 });
90 } 100 }
91 </script> 101 </script>
92 </head> 102 </head>
93 103
94 <body onload="runTest()"> 104 <body onload="runTest()">
95 <div id="description"> 105 <div id="description">
96 <p>This scenario verifies that the green "container" element and lime 106 <p>This scenario verifies that the green "container" element and lime
97 "innerScrolling" element scroll properly even though there is a blue 107 "innerScrolling" element scroll properly even though there is a blue
98 fixed-position element layered in between them.</p> 108 fixed-position element layered in between them.</p>
99 109
(...skipping 13 matching lines...) Expand all
113 CASE 1, original layer tree: 123 CASE 1, original layer tree:
114 <pre id="Case1"></pre> 124 <pre id="Case1"></pre>
115 125
116 CASE 2, scrolling y by 10 pixels, both the "container" and "inner" should sc roll properly. 126 CASE 2, scrolling y by 10 pixels, both the "container" and "inner" should sc roll properly.
117 <pre id="Case2"></pre> 127 <pre id="Case2"></pre>
118 128
119 CASE 3, scrolling y further so that "inner" no longer overlaps the fixed-pos layer, then the stacking context of "container" includes the "innerScrolling" l ayer, and doubles in width: 129 CASE 3, scrolling y further so that "inner" no longer overlaps the fixed-pos layer, then the stacking context of "container" includes the "innerScrolling" l ayer, and doubles in width:
120 <pre id="Case3"></pre> 130 <pre id="Case3"></pre>
121 </div> 131 </div>
122 </body> 132 </body>
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