| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "core/paint/PaintLayerScrollableAreaTest.h" |
| |
| #include "platform/graphics/GraphicsLayer.h" |
| |
| namespace blink { |
| |
| TEST_F(PaintLayerScrollableAreaTest, |
| CanPaintBackgroundOntoScrollingContentsLayer) { |
| document().frame()->settings()->setPreferCompositingToLCDTextEnabled(true); |
| setBodyInnerHTML( |
| "<style>" |
| ".scroller { overflow: scroll; will-change: transform; width: 300px; " |
| "height: 300px;} .spacer { height: 1000px; }" |
| "#scroller13::-webkit-scrollbar { width: 13px; height: 13px;}" |
| "</style>" |
| "<div id='scroller1' class='scroller' style='background: white local;'>" |
| " <div id='negative-composited-child' style='background-color: red; " |
| "width: 1px; height: 1px; position: absolute; backface-visibility: " |
| "hidden; z-index: -1'></div>" |
| " <div class='spacer'></div>" |
| "</div>" |
| "<div id='scroller2' class='scroller' style='background: white " |
| "content-box; padding: 10px;'><div class='spacer'></div></div>" |
| "<div id='scroller3' class='scroller' style='background: white local " |
| "content-box; padding: 10px;'><div class='spacer'></div></div>" |
| "<div id='scroller4' class='scroller' style='background: " |
| "url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUg), white local;'><div " |
| "class='spacer'></div></div>" |
| "<div id='scroller5' class='scroller' style='background: " |
| "url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUg) local, white " |
| "local;'><div class='spacer'></div></div>" |
| "<div id='scroller6' class='scroller' style='background: " |
| "url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUg) local, white " |
| "padding-box; padding: 10px;'><div class='spacer'></div></div>" |
| "<div id='scroller7' class='scroller' style='background: " |
| "url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUg) local, white " |
| "content-box; padding: 10px;'><div class='spacer'></div></div>" |
| "<div id='scroller8' class='scroller' style='background: white " |
| "border-box;'><div class='spacer'></div></div>" |
| "<div id='scroller9' class='scroller' style='background: white " |
| "border-box; border: 10px solid black;'><div class='spacer'></div></div>" |
| "<div id='scroller10' class='scroller' style='background: white " |
| "border-box; border: 10px solid rgba(0, 0, 0, 0.5);'><div " |
| "class='spacer'></div></div>" |
| "<div id='scroller11' class='scroller' style='background: white " |
| "content-box;'><div class='spacer'></div></div>" |
| "<div id='scroller12' class='scroller' style='background: white " |
| "content-box; padding: 10px;'><div class='spacer'></div></div>" |
| "<div id='scroller13' class='scroller' style='background: white " |
| "border-box;'><div class='spacer'></div></div>" |
| "<div id='scroller14' class='scroller' style='background: white; border: " |
| "1px solid black; outline: 1px solid blue; outline-offset: -1px;'><div " |
| "class='spacer'></div></div>" |
| "<div id='scroller15' class='scroller' style='background: white; border: " |
| "1px solid black; outline: 1px solid blue; outline-offset: -2px;'><div " |
| "class='spacer'></div></div>" |
| "<div id='scroller16' class='scroller' style='background: white; clip: " |
| "rect(0px,10px,10px,0px);'><div class='spacer'></div></div>"); |
| |
| // #scroller1 cannot paint background into scrolling contents layer because it |
| // has a negative z-index child. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller1")); |
| |
| // #scroller2 cannot paint background into scrolling contents layer because it |
| // has a content-box clip without local attachment. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller2")); |
| |
| // #scroller3 can paint background into scrolling contents layer. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller3")); |
| |
| // #scroller4 cannot paint background into scrolling contents layer because |
| // the background image is not locally attached. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller4")); |
| |
| // #scroller5 can paint background into scrolling contents layer because both |
| // the image and color are locally attached. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller5")); |
| |
| // #scroller6 can paint background into scrolling contents layer because the |
| // image is locally attached and even though the color is not, it is filled to |
| // the padding box so it will be drawn the same as a locally attached |
| // background. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller6")); |
| |
| // #scroller7 cannot paint background into scrolling contents layer because |
| // the color is filled to the content box and we have padding so it is not |
| // equivalent to a locally attached background. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller7")); |
| |
| // #scroller8 can paint background into scrolling contents layer because its |
| // border-box is equivalent to its padding box since it has no border. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller8")); |
| |
| // #scroller9 can paint background into scrolling contents layer because its |
| // border is opaque so it completely covers the background outside of the |
| // padding-box. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller9")); |
| |
| // #scroller10 cannot paint background into scrolling contents layer because |
| // its border is partially transparent so the background must be drawn to the |
| // border-box edges. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller10")); |
| |
| // #scroller11 can paint background into scrolling contents layer because its |
| // content-box is equivalent to its padding box since it has no padding. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller11")); |
| |
| // #scroller12 cannot paint background into scrolling contents layer because |
| // it has padding so its content-box is not equivalent to its padding-box. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller12")); |
| |
| // #scroller13 cannot paint background into scrolling contents layer because |
| // it has a custom scrollbar which the background may need to draw under. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller13")); |
| |
| // #scroller14 can paint background into scrolling contents layer because the |
| // outline is drawn outside the padding box. |
| EXPECT_TRUE(canPaintBackgroundOntoScrollingContentsLayer("scroller14")); |
| |
| // #scroller15 cannot paint background into scrolling contents layer because |
| // the outline is drawn inside the padding box. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller15")); |
| |
| // #scroller16 cannot paint background into scrolling contents layer because |
| // the scroller has a clip which would not be respected by the scrolling |
| // contents layer. |
| EXPECT_FALSE(canPaintBackgroundOntoScrollingContentsLayer("scroller16")); |
| } |
| |
| TEST_F(PaintLayerScrollableAreaTest, OpaqueLayersPromoted) { |
| RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| |
| setBodyInnerHTML( |
| "<style>" |
| "#scroller { overflow: scroll; height: 200px; width: 200px; background: " |
| "white local content-box; border: 10px solid rgba(0, 255, 0, 0.5); }" |
| "#scrolled { height: 300px; }" |
| "</style>" |
| "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| document().view()->updateAllLifecyclePhases(); |
| |
| EXPECT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| Element* scroller = document().getElementById("scroller"); |
| PaintLayer* paintLayer = |
| toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_TRUE(paintLayer->needsCompositedScrolling()); |
| EXPECT_TRUE(paintLayer->graphicsLayerBacking()); |
| ASSERT_TRUE(paintLayer->graphicsLayerBackingForScrolling()); |
| EXPECT_TRUE(paintLayer->graphicsLayerBackingForScrolling()->contentsOpaque()); |
| } |
| |
| TEST_F(PaintLayerScrollableAreaTest, TransparentLayersNotPromoted) { |
| RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| |
| setBodyInnerHTML( |
| "<style>" |
| "#scroller { overflow: scroll; height: 200px; width: 200px; background: " |
| "rgba(0, 255, 0, 0.5) local content-box; border: 10px solid rgba(0, 255, " |
| "0, 0.5); }" |
| "#scrolled { height: 300px; }" |
| "</style>" |
| "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| document().view()->updateAllLifecyclePhases(); |
| |
| EXPECT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| Element* scroller = document().getElementById("scroller"); |
| PaintLayer* paintLayer = |
| toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_FALSE(paintLayer->needsCompositedScrolling()); |
| EXPECT_FALSE(paintLayer->graphicsLayerBacking()); |
| EXPECT_FALSE(paintLayer->graphicsLayerBackingForScrolling()); |
| } |
| |
| TEST_F(PaintLayerScrollableAreaTest, OpaqueLayersDepromotedOnStyleChange) { |
| RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| |
| setBodyInnerHTML( |
| "<style>" |
| "#scroller { overflow: scroll; height: 200px; width: 200px; background: " |
| "white local content-box; }" |
| "#scrolled { height: 300px; }" |
| "</style>" |
| "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| document().view()->updateAllLifecyclePhases(); |
| |
| EXPECT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| Element* scroller = document().getElementById("scroller"); |
| PaintLayer* paintLayer = |
| toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_TRUE(paintLayer->needsCompositedScrolling()); |
| |
| // Change the background to transparent |
| scroller->setAttribute( |
| HTMLNames::styleAttr, |
| "background: rgba(255,255,255,0.5) local content-box;"); |
| document().view()->updateAllLifecyclePhases(); |
| paintLayer = toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_FALSE(paintLayer->needsCompositedScrolling()); |
| EXPECT_FALSE(paintLayer->graphicsLayerBacking()); |
| EXPECT_FALSE(paintLayer->graphicsLayerBackingForScrolling()); |
| } |
| |
| TEST_F(PaintLayerScrollableAreaTest, OpaqueLayersPromotedOnStyleChange) { |
| RuntimeEnabledFeatures::setCompositeOpaqueScrollersEnabled(true); |
| |
| setBodyInnerHTML( |
| "<style>" |
| "#scroller { overflow: scroll; height: 200px; width: 200px; background: " |
| "rgba(255,255,255,0.5) local content-box; }" |
| "#scrolled { height: 300px; }" |
| "</style>" |
| "<div id=\"scroller\"><div id=\"scrolled\"></div></div>"); |
| document().view()->updateAllLifecyclePhases(); |
| |
| EXPECT_TRUE(RuntimeEnabledFeatures::compositeOpaqueScrollersEnabled()); |
| Element* scroller = document().getElementById("scroller"); |
| PaintLayer* paintLayer = |
| toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_FALSE(paintLayer->needsCompositedScrolling()); |
| |
| // Change the background to transparent |
| scroller->setAttribute(HTMLNames::styleAttr, |
| "background: white local content-box;"); |
| document().view()->updateAllLifecyclePhases(); |
| paintLayer = toLayoutBoxModelObject(scroller->layoutObject())->layer(); |
| ASSERT_TRUE(paintLayer); |
| EXPECT_TRUE(paintLayer->needsCompositedScrolling()); |
| EXPECT_TRUE(paintLayer->graphicsLayerBacking()); |
| ASSERT_TRUE(paintLayer->graphicsLayerBackingForScrolling()); |
| EXPECT_TRUE(paintLayer->graphicsLayerBackingForScrolling()->contentsOpaque()); |
| } |
| } |