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1 /* | 1 /* |
2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
reserved. |
3 * | 3 * |
4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
5 * | 5 * |
6 * Other contributors: | 6 * Other contributors: |
7 * Robert O'Callahan <roc+@cs.cmu.edu> | 7 * Robert O'Callahan <roc+@cs.cmu.edu> |
8 * David Baron <dbaron@fas.harvard.edu> | 8 * David Baron <dbaron@fas.harvard.edu> |
9 * Christian Biesinger <cbiesinger@web.de> | 9 * Christian Biesinger <cbiesinger@web.de> |
10 * Randall Jesup <rjesup@wgate.com> | 10 * Randall Jesup <rjesup@wgate.com> |
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92 | 92 |
93 namespace blink { | 93 namespace blink { |
94 | 94 |
95 namespace { | 95 namespace { |
96 | 96 |
97 static CompositingQueryMode gCompositingQueryMode = | 97 static CompositingQueryMode gCompositingQueryMode = |
98 CompositingQueriesAreOnlyAllowedInCertainDocumentLifecyclePhases; | 98 CompositingQueriesAreOnlyAllowedInCertainDocumentLifecyclePhases; |
99 | 99 |
100 struct SameSizeAsPaintLayer : DisplayItemClient { | 100 struct SameSizeAsPaintLayer : DisplayItemClient { |
101 int bitFields; | 101 int bitFields; |
102 void* pointers[9]; | 102 void* pointers[10]; |
103 LayoutUnit layoutUnits[4]; | 103 LayoutUnit layoutUnits[4]; |
104 IntSize size; | 104 IntSize size; |
105 OwnPtrWillBePersistent<PaintLayerScrollableArea> scrollableArea; | 105 OwnPtrWillBePersistent<PaintLayerScrollableArea> scrollableArea; |
106 struct { | 106 struct { |
107 IntRect rect; | 107 IntRect rect; |
108 void* pointers[2]; | 108 void* pointers[2]; |
109 } ancestorCompositingInputs; | 109 } ancestorCompositingInputs; |
110 struct { | 110 struct { |
111 IntSize size; | 111 IntSize size; |
112 void* pointer; | 112 void* pointer; |
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166 , m_hasNonIsolatedDescendantWithBlendMode(false) | 166 , m_hasNonIsolatedDescendantWithBlendMode(false) |
167 , m_hasAncestorWithClipPath(false) | 167 , m_hasAncestorWithClipPath(false) |
168 , m_layoutObject(layoutObject) | 168 , m_layoutObject(layoutObject) |
169 , m_parent(0) | 169 , m_parent(0) |
170 , m_previous(0) | 170 , m_previous(0) |
171 , m_next(0) | 171 , m_next(0) |
172 , m_first(0) | 172 , m_first(0) |
173 , m_last(0) | 173 , m_last(0) |
174 , m_staticInlinePosition(0) | 174 , m_staticInlinePosition(0) |
175 , m_staticBlockPosition(0) | 175 , m_staticBlockPosition(0) |
| 176 , m_ancestorOverflowLayer(nullptr) |
176 { | 177 { |
177 updateStackingNode(); | 178 updateStackingNode(); |
178 | 179 |
179 m_isSelfPaintingLayer = shouldBeSelfPaintingLayer(); | 180 m_isSelfPaintingLayer = shouldBeSelfPaintingLayer(); |
180 | 181 |
181 if (!layoutObject->slowFirstChild() && layoutObject->style()) { | 182 if (!layoutObject->slowFirstChild() && layoutObject->style()) { |
182 m_visibleContentStatusDirty = false; | 183 m_visibleContentStatusDirty = false; |
183 m_hasVisibleContent = layoutObject->style()->visibility() == VISIBLE; | 184 m_hasVisibleContent = layoutObject->style()->visibility() == VISIBLE; |
184 } | 185 } |
185 | 186 |
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345 // in this case, there is no need to dirty our ancestors further. | 346 // in this case, there is no need to dirty our ancestors further. |
346 if (layer->isSelfPaintingLayer()) { | 347 if (layer->isSelfPaintingLayer()) { |
347 ASSERT(!parent() || parent()->m_hasSelfPaintingLayerDescendantDirty
|| parent()->m_hasSelfPaintingLayerDescendant); | 348 ASSERT(!parent() || parent()->m_hasSelfPaintingLayerDescendantDirty
|| parent()->m_hasSelfPaintingLayerDescendant); |
348 break; | 349 break; |
349 } | 350 } |
350 } | 351 } |
351 } | 352 } |
352 | 353 |
353 bool PaintLayer::scrollsWithViewport() const | 354 bool PaintLayer::scrollsWithViewport() const |
354 { | 355 { |
355 return layoutObject()->style()->position() == FixedPosition && layoutObject(
)->containerForFixedPosition() == layoutObject()->view(); | 356 return (layoutObject()->style()->position() == FixedPosition && layoutObject
()->containerForFixedPosition() == layoutObject()->view()) |
| 357 || (layoutObject()->style()->position() == StickyPosition && !ancestorSc
rollingLayer()); |
356 } | 358 } |
357 | 359 |
358 bool PaintLayer::scrollsWithRespectTo(const PaintLayer* other) const | 360 bool PaintLayer::scrollsWithRespectTo(const PaintLayer* other) const |
359 { | 361 { |
360 if (scrollsWithViewport() != other->scrollsWithViewport()) | 362 if (scrollsWithViewport() != other->scrollsWithViewport()) |
361 return true; | 363 return true; |
362 return ancestorScrollingLayer() != other->ancestorScrollingLayer(); | 364 return ancestorScrollingLayer() != other->ancestorScrollingLayer(); |
363 } | 365 } |
364 | 366 |
365 void PaintLayer::updateLayerPositionsAfterOverflowScroll(const DoubleSize& scrol
lDelta) | 367 void PaintLayer::updateLayerPositionsAfterOverflowScroll(const DoubleSize& scrol
lDelta) |
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743 } | 745 } |
744 | 746 |
745 // If we live in a 3d hierarchy, then the layer at the root of that hierarch
y needs | 747 // If we live in a 3d hierarchy, then the layer at the root of that hierarch
y needs |
746 // the m_has3DTransformedDescendant set. | 748 // the m_has3DTransformedDescendant set. |
747 if (preserves3D()) | 749 if (preserves3D()) |
748 return has3DTransform() || m_has3DTransformedDescendant; | 750 return has3DTransform() || m_has3DTransformedDescendant; |
749 | 751 |
750 return has3DTransform(); | 752 return has3DTransform(); |
751 } | 753 } |
752 | 754 |
753 bool PaintLayer::updateLayerPosition() | 755 void PaintLayer::updateLayerPosition() |
754 { | 756 { |
755 LayoutPoint localPoint; | 757 LayoutPoint localPoint; |
756 LayoutPoint inlineBoundingBoxOffset; // We don't put this into the Layer x/y
for inlines, so we need to subtract it out when done. | 758 LayoutPoint inlineBoundingBoxOffset; // We don't put this into the Layer x/y
for inlines, so we need to subtract it out when done. |
757 | 759 |
758 if (layoutObject()->isInline() && layoutObject()->isLayoutInline()) { | 760 if (layoutObject()->isInline() && layoutObject()->isLayoutInline()) { |
759 LayoutInline* inlineFlow = toLayoutInline(layoutObject()); | 761 LayoutInline* inlineFlow = toLayoutInline(layoutObject()); |
760 IntRect lineBox = inlineFlow->linesBoundingBox(); | 762 IntRect lineBox = inlineFlow->linesBoundingBox(); |
761 m_size = lineBox.size(); | 763 m_size = lineBox.size(); |
762 inlineBoundingBoxOffset = lineBox.location(); | 764 inlineBoundingBoxOffset = lineBox.location(); |
763 localPoint.moveBy(inlineBoundingBoxOffset); | 765 localPoint.moveBy(inlineBoundingBoxOffset); |
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794 | 796 |
795 if (containingLayer->layoutObject()->isInFlowPositioned() && containingL
ayer->layoutObject()->isLayoutInline()) { | 797 if (containingLayer->layoutObject()->isInFlowPositioned() && containingL
ayer->layoutObject()->isLayoutInline()) { |
796 LayoutSize offset = toLayoutInline(containingLayer->layoutObject())-
>offsetForInFlowPositionedInline(*toLayoutBox(layoutObject())); | 798 LayoutSize offset = toLayoutInline(containingLayer->layoutObject())-
>offsetForInFlowPositionedInline(*toLayoutBox(layoutObject())); |
797 localPoint += offset; | 799 localPoint += offset; |
798 } | 800 } |
799 } else if (parent() && parent()->layoutObject()->hasOverflowClip()) { | 801 } else if (parent() && parent()->layoutObject()->hasOverflowClip()) { |
800 IntSize scrollOffset = parent()->layoutBox()->scrolledContentOffset(); | 802 IntSize scrollOffset = parent()->layoutBox()->scrolledContentOffset(); |
801 localPoint -= scrollOffset; | 803 localPoint -= scrollOffset; |
802 } | 804 } |
803 | 805 |
804 bool positionOrOffsetChanged = false; | |
805 if (layoutObject()->isInFlowPositioned()) { | 806 if (layoutObject()->isInFlowPositioned()) { |
806 LayoutSize newOffset = layoutObject()->offsetForInFlowPosition(); | 807 LayoutSize newOffset = layoutObject()->offsetForInFlowPosition(); |
807 positionOrOffsetChanged = newOffset != offsetForInFlowPosition(); | |
808 if (m_rareData || !newOffset.isZero()) | 808 if (m_rareData || !newOffset.isZero()) |
809 ensureRareData().offsetForInFlowPosition = newOffset; | 809 ensureRareData().offsetForInFlowPosition = newOffset; |
810 localPoint.move(newOffset); | 810 localPoint.move(newOffset); |
811 } else if (m_rareData) { | 811 } else if (m_rareData) { |
812 m_rareData->offsetForInFlowPosition = LayoutSize(); | 812 m_rareData->offsetForInFlowPosition = LayoutSize(); |
813 } | 813 } |
814 | 814 |
815 // FIXME: We'd really like to just get rid of the concept of a layer rectang
le and rely on the layoutObjects. | 815 // FIXME: We'd really like to just get rid of the concept of a layer rectang
le and rely on the layoutObjects. |
816 localPoint.moveBy(-inlineBoundingBoxOffset); | 816 localPoint.moveBy(-inlineBoundingBoxOffset); |
817 | 817 |
818 if (m_location != localPoint) { | 818 if (m_location != localPoint) { |
819 positionOrOffsetChanged = true; | |
820 setNeedsRepaint(); | 819 setNeedsRepaint(); |
821 } | 820 } |
822 m_location = localPoint; | 821 m_location = localPoint; |
823 | 822 |
824 #if ENABLE(ASSERT) | 823 #if ENABLE(ASSERT) |
825 m_needsPositionUpdate = false; | 824 m_needsPositionUpdate = false; |
826 #endif | 825 #endif |
827 return positionOrOffsetChanged; | |
828 } | 826 } |
829 | 827 |
830 TransformationMatrix PaintLayer::perspectiveTransform() const | 828 TransformationMatrix PaintLayer::perspectiveTransform() const |
831 { | 829 { |
832 if (!layoutObject()->hasTransformRelatedProperty()) | 830 if (!layoutObject()->hasTransformRelatedProperty()) |
833 return TransformationMatrix(); | 831 return TransformationMatrix(); |
834 | 832 |
835 const ComputedStyle& style = layoutObject()->styleRef(); | 833 const ComputedStyle& style = layoutObject()->styleRef(); |
836 if (!style.hasPerspective()) | 834 if (!style.hasPerspective()) |
837 return TransformationMatrix(); | 835 return TransformationMatrix(); |
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1180 if (beforeChild) { | 1178 if (beforeChild) { |
1181 beforeChild->setPreviousSibling(child); | 1179 beforeChild->setPreviousSibling(child); |
1182 child->setNextSibling(beforeChild); | 1180 child->setNextSibling(beforeChild); |
1183 ASSERT(beforeChild != child); | 1181 ASSERT(beforeChild != child); |
1184 } else { | 1182 } else { |
1185 setLastChild(child); | 1183 setLastChild(child); |
1186 } | 1184 } |
1187 | 1185 |
1188 child->m_parent = this; | 1186 child->m_parent = this; |
1189 | 1187 |
| 1188 // The ancestor overflow layer is calculated during compositing inputs updat
e and should not be set yet. |
| 1189 ASSERT(!child->ancestorOverflowLayer()); |
| 1190 |
1190 setNeedsCompositingInputsUpdate(); | 1191 setNeedsCompositingInputsUpdate(); |
1191 | 1192 |
1192 if (!child->stackingNode()->isStacked() && !layoutObject()->documentBeingDes
troyed()) | 1193 if (!child->stackingNode()->isStacked() && !layoutObject()->documentBeingDes
troyed()) |
1193 compositor()->setNeedsCompositingUpdate(CompositingUpdateRebuildTree); | 1194 compositor()->setNeedsCompositingUpdate(CompositingUpdateRebuildTree); |
1194 | 1195 |
1195 if (child->stackingNode()->isStacked() || child->firstChild()) { | 1196 if (child->stackingNode()->isStacked() || child->firstChild()) { |
1196 // Dirty the z-order list in which we are contained. The ancestorStackin
gContextNode() can be null in the | 1197 // Dirty the z-order list in which we are contained. The ancestorStackin
gContextNode() can be null in the |
1197 // case where we're building up generated content layers. This is ok, si
nce the lists will start | 1198 // case where we're building up generated content layers. This is ok, si
nce the lists will start |
1198 // off dirty in that case anyway. | 1199 // off dirty in that case anyway. |
1199 child->stackingNode()->dirtyStackingContextZOrderLists(); | 1200 child->stackingNode()->dirtyStackingContextZOrderLists(); |
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1233 // |stackingContext| value. | 1234 // |stackingContext| value. |
1234 oldChild->stackingNode()->dirtyStackingContextZOrderLists(); | 1235 oldChild->stackingNode()->dirtyStackingContextZOrderLists(); |
1235 } | 1236 } |
1236 | 1237 |
1237 if (layoutObject()->style()->visibility() != VISIBLE) | 1238 if (layoutObject()->style()->visibility() != VISIBLE) |
1238 dirtyVisibleContentStatus(); | 1239 dirtyVisibleContentStatus(); |
1239 | 1240 |
1240 oldChild->setPreviousSibling(0); | 1241 oldChild->setPreviousSibling(0); |
1241 oldChild->setNextSibling(0); | 1242 oldChild->setNextSibling(0); |
1242 oldChild->m_parent = 0; | 1243 oldChild->m_parent = 0; |
| 1244 if (oldChild->ancestorOverflowLayer()) |
| 1245 oldChild->ancestorOverflowLayer()->getScrollableArea()->invalidateSticky
ConstraintsFor(oldChild); |
| 1246 oldChild->updateAncestorOverflowLayer(nullptr); |
1243 | 1247 |
1244 dirtyAncestorChainHasSelfPaintingLayerDescendantStatus(); | 1248 dirtyAncestorChainHasSelfPaintingLayerDescendantStatus(); |
1245 | 1249 |
1246 oldChild->updateDescendantDependentFlags(); | 1250 oldChild->updateDescendantDependentFlags(); |
1247 | 1251 |
1248 if (oldChild->m_hasVisibleContent || oldChild->m_hasVisibleDescendant) | 1252 if (oldChild->m_hasVisibleContent || oldChild->m_hasVisibleDescendant) |
1249 dirtyAncestorChainVisibleDescendantStatus(); | 1253 dirtyAncestorChainVisibleDescendantStatus(); |
1250 | 1254 |
1251 if (oldChild->enclosingPaginationLayer()) | 1255 if (oldChild->enclosingPaginationLayer()) |
1252 oldChild->clearPaginationRecursive(); | 1256 oldChild->clearPaginationRecursive(); |
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2814 | 2818 |
2815 void showLayerTree(const blink::LayoutObject* layoutObject) | 2819 void showLayerTree(const blink::LayoutObject* layoutObject) |
2816 { | 2820 { |
2817 if (!layoutObject) { | 2821 if (!layoutObject) { |
2818 fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n"); | 2822 fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n"); |
2819 return; | 2823 return; |
2820 } | 2824 } |
2821 showLayerTree(layoutObject->enclosingLayer()); | 2825 showLayerTree(layoutObject->enclosingLayer()); |
2822 } | 2826 } |
2823 #endif | 2827 #endif |
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