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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "core/paint/PaintLayerScrollableAreaTest.h" |
| 6 |
| 7 namespace blink { |
| 8 |
| 9 TEST_F(PaintLayerScrollableAreaTest, OpaqueLayersPromoted) |
| 10 { |
| 11 RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| 12 |
| 13 setBodyInnerHTML( |
| 14 "<style>" |
| 15 "#scroller { overflow: scroll; height: 300px; width: 300px; background-c
olor: rgb(0,128,0); }" |
| 16 "#scrolled { height: 1000px; width: 250px; }" |
| 17 "</style>" |
| 18 "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| 19 document().view()->updateAllLifecyclePhases(); |
| 20 |
| 21 ASSERT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| 22 Element* scroller = document().getElementById("scroller"); |
| 23 PaintLayer* paintLayer = toLayoutBoxModelObject(scroller->layoutObject())->l
ayer(); |
| 24 ASSERT_TRUE(paintLayer); |
| 25 ASSERT_TRUE(paintLayer->needsCompositedScrolling()); |
| 26 } |
| 27 |
| 28 TEST_F(PaintLayerScrollableAreaTest, TransparentLayersNotPromoted) |
| 29 { |
| 30 RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| 31 |
| 32 setBodyInnerHTML( |
| 33 "<style>" |
| 34 "#scroller { overflow: scroll; height: 300px; width: 300px; background-c
olor: rgba(0,128,0,0.5); }" |
| 35 "#scrolled { height: 1000px; width: 250px; }" |
| 36 "</style>" |
| 37 "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| 38 document().view()->updateAllLifecyclePhases(); |
| 39 |
| 40 ASSERT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| 41 Element* scroller = document().getElementById("scroller"); |
| 42 PaintLayer* paintLayer = toLayoutBoxModelObject(scroller->layoutObject())->l
ayer(); |
| 43 ASSERT_TRUE(paintLayer); |
| 44 ASSERT_TRUE(!paintLayer->needsCompositedScrolling()); |
| 45 } |
| 46 |
| 47 } |
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