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1 <!DOCTYPE html> | |
2 <html> | |
3 <head> | |
4 <script src="../../resources/run-after-layout-and-paint.js"></script> | |
5 <script> | |
6 if (window.internals) | |
7 internals.runtimeFlags.compositeOpaqueScrollersEnabled = true; | |
8 | |
9 if (window.testRunner) { | |
10 testRunner.dumpAsTextWithPixelResults(); | |
11 testRunner.waitUntilDone(); | |
12 } | |
13 | |
14 function hasOpaqueCompositedScrollingContentsLayer(layer) { | |
15 if (layer.name == "Scrolling Contents Layer") | |
16 return layer.contentsOpaque; | |
17 if (layer.children) { | |
18 for (var i = 0; i < layer.children.length; i++) { | |
19 if (hasOpaqueCompositedScrollingContentsLayer(layer.children[i]) ) | |
20 return true; | |
21 } | |
22 } | |
23 return false; | |
24 } | |
25 | |
26 onload = function() { | |
27 if (!window.testRunner || !window.internals) | |
28 return; | |
29 | |
30 var result = "Should not have opaque composited scrolling contents layer : "; | |
31 if (!hasOpaqueCompositedScrollingContentsLayer(JSON.parse(window.interna ls.layerTreeAsText(document)))) | |
flackr
2016/08/30 21:14:49
Same as above, check that we don't have a composit
Stephen Chennney
2016/08/31 20:50:20
Done.
| |
32 result += "Pass.\n"; | |
33 else | |
34 result += "Fail.\n"; | |
35 document.getElementById("test-1-output").innerHTML = result; | |
36 | |
37 scrollerElement = document.getElementById("scroller"); | |
38 scrollerElement.style.background = "green local content-box"; | |
39 | |
40 runAfterLayoutAndPaint(function() { | |
41 var result = "Should have opaque composited scrolling contents layer : "; | |
42 if (hasOpaqueCompositedScrollingContentsLayer(JSON.parse(window.inte rnals.layerTreeAsText(document)))) | |
43 result += "Pass.\n"; | |
44 else | |
45 result += "Fail.\n"; | |
46 document.getElementById("test-2-output").innerHTML = result; | |
47 runAfterLayoutAndPaint(function() { testRunner.notifyDone(); }); | |
48 }); | |
49 } | |
50 </script> | |
51 <style> | |
52 #scroller { | |
53 background: transparent local content-box; | |
54 border: 10px solid rgba(0, 255, 0, 0.5); | |
55 overflow: scroll; | |
56 width: 200px; | |
57 height: 200px; | |
58 } | |
59 .spacer { | |
60 height: 300px; | |
61 } | |
62 </style> | |
63 </head> | |
64 <body> | |
65 <!-- The scroller's Scrolling Contents Layer should be opaque due to the opaque | |
66 color background. Even though the background has a content-box clip there | |
67 is no gap because the scroller has no padding. This means that we will be | |
68 able to draw text with subpixel anti-aliasing. | |
flackr
2016/08/30 21:14:49
Comment also seems out of date.
Stephen Chennney
2016/08/31 20:50:20
Done.
| |
69 --> | |
70 <div id="scroller"><div class="spacer"></div></div> | |
71 <p>Scroller background should be green</p> | |
72 <p id="test-1-output"></p> | |
73 <p id="test-2-output"></p> | |
74 </body></html> | |
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