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1 /* | 1 /* |
2 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved. |
3 * Copyright (C) 2013 Intel Corporation. All rights reserved. | 3 * Copyright (C) 2013 Intel Corporation. All rights reserved. |
4 * | 4 * |
5 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 5 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
6 * | 6 * |
7 * Other contributors: | 7 * Other contributors: |
8 * Robert O'Callahan <roc+@cs.cmu.edu> | 8 * Robert O'Callahan <roc+@cs.cmu.edu> |
9 * David Baron <dbaron@fas.harvard.edu> | 9 * David Baron <dbaron@fas.harvard.edu> |
10 * Christian Biesinger <cbiesinger@web.de> | 10 * Christian Biesinger <cbiesinger@web.de> |
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257 LayoutRect rect() const { return LayoutRect(location(), LayoutSize(size()));
} | 257 LayoutRect rect() const { return LayoutRect(location(), LayoutSize(size()));
} |
258 | 258 |
259 bool isRootLayer() const { return m_isRootLayer; } | 259 bool isRootLayer() const { return m_isRootLayer; } |
260 | 260 |
261 PaintLayerCompositor* compositor() const; | 261 PaintLayerCompositor* compositor() const; |
262 | 262 |
263 // Notification from the layoutObject that its content changed (e.g. current
frame of image changed). | 263 // Notification from the layoutObject that its content changed (e.g. current
frame of image changed). |
264 // Allows updates of layer content without invalidating paint. | 264 // Allows updates of layer content without invalidating paint. |
265 void contentChanged(ContentChangeType); | 265 void contentChanged(ContentChangeType); |
266 | 266 |
| 267 void updateLayerPosition(); |
| 268 |
267 void updateLayerPositionsAfterLayout(); | 269 void updateLayerPositionsAfterLayout(); |
268 void updateLayerPositionsAfterOverflowScroll(const DoubleSize& scrollDelta); | 270 void updateLayerPositionsAfterOverflowScroll(const DoubleSize& scrollDelta); |
269 | 271 |
270 PaintLayer* enclosingPaginationLayer() const { return m_rareData ? m_rareDat
a->enclosingPaginationLayer : nullptr; } | 272 PaintLayer* enclosingPaginationLayer() const { return m_rareData ? m_rareDat
a->enclosingPaginationLayer : nullptr; } |
271 | 273 |
272 void updateTransformationMatrix(); | 274 void updateTransformationMatrix(); |
273 PaintLayer* renderingContextRoot(); | 275 PaintLayer* renderingContextRoot(); |
274 | 276 |
275 LayoutSize offsetForInFlowPosition() const { return m_rareData ? m_rareData-
>offsetForInFlowPosition : LayoutSize(); } | 277 LayoutSize offsetForInFlowPosition() const { return m_rareData ? m_rareData-
>offsetForInFlowPosition : LayoutSize(); } |
276 | 278 |
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520 IntRect clippedAbsoluteBoundingBox; | 522 IntRect clippedAbsoluteBoundingBox; |
521 const LayoutObject* clippingContainer; | 523 const LayoutObject* clippingContainer; |
522 }; | 524 }; |
523 | 525 |
524 class RareAncestorDependentCompositingInputs { | 526 class RareAncestorDependentCompositingInputs { |
525 public: | 527 public: |
526 RareAncestorDependentCompositingInputs() | 528 RareAncestorDependentCompositingInputs() |
527 : opacityAncestor(nullptr) | 529 : opacityAncestor(nullptr) |
528 , transformAncestor(nullptr) | 530 , transformAncestor(nullptr) |
529 , filterAncestor(nullptr) | 531 , filterAncestor(nullptr) |
| 532 , ancestorOverflowLayer(nullptr) |
530 , ancestorScrollingLayer(nullptr) | 533 , ancestorScrollingLayer(nullptr) |
531 , nearestFixedPositionLayer(nullptr) | 534 , nearestFixedPositionLayer(nullptr) |
532 , scrollParent(nullptr) | 535 , scrollParent(nullptr) |
533 , clipParent(nullptr) | 536 , clipParent(nullptr) |
534 { } | 537 { } |
535 | 538 |
536 bool isDefault() const { return !opacityAncestor && !transformAncestor &
& !filterAncestor && !ancestorScrollingLayer && !nearestFixedPositionLayer && !s
crollParent && !clipParent; } | 539 bool isDefault() const { return !opacityAncestor && !transformAncestor &
& !filterAncestor && !ancestorOverflowLayer && !ancestorScrollingLayer && !neare
stFixedPositionLayer && !scrollParent && !clipParent; } |
537 | 540 |
538 const PaintLayer* opacityAncestor; | 541 const PaintLayer* opacityAncestor; |
539 const PaintLayer* transformAncestor; | 542 const PaintLayer* transformAncestor; |
540 const PaintLayer* filterAncestor; | 543 const PaintLayer* filterAncestor; |
| 544 |
| 545 // The first ancestor having a non visible overflow. |
| 546 const PaintLayer* ancestorOverflowLayer; |
| 547 |
| 548 // The fist ancestor which can scroll. This is a subset of the |
| 549 // ancestorOverflowLayer chain where the scrolling layer is visible and |
| 550 // has a larger scroll content than its bounds. |
541 const PaintLayer* ancestorScrollingLayer; | 551 const PaintLayer* ancestorScrollingLayer; |
542 const PaintLayer* nearestFixedPositionLayer; | 552 const PaintLayer* nearestFixedPositionLayer; |
543 | 553 |
544 // A scroll parent is a compositor concept. It's only needed in blink | 554 // A scroll parent is a compositor concept. It's only needed in blink |
545 // because we need to use it as a promotion trigger. A layer has a | 555 // because we need to use it as a promotion trigger. A layer has a |
546 // scroll parent if neither its compositor scrolling ancestor, nor any | 556 // scroll parent if neither its compositor scrolling ancestor, nor any |
547 // other layer scrolled by this ancestor, is a stacking ancestor of this | 557 // other layer scrolled by this ancestor, is a stacking ancestor of this |
548 // layer. Layers with scroll parents must be scrolled with the main | 558 // layer. Layers with scroll parents must be scrolled with the main |
549 // scrolling layer by the compositor. | 559 // scrolling layer by the compositor. |
550 const PaintLayer* scrollParent; | 560 const PaintLayer* scrollParent; |
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569 | 579 |
570 void updateAncestorDependentCompositingInputs(const AncestorDependentComposi
tingInputs&, const RareAncestorDependentCompositingInputs&, bool hasAncestorWith
ClipPath); | 580 void updateAncestorDependentCompositingInputs(const AncestorDependentComposi
tingInputs&, const RareAncestorDependentCompositingInputs&, bool hasAncestorWith
ClipPath); |
571 void updateDescendantDependentCompositingInputs(bool hasDescendantWithClipPa
th, bool hasNonIsolatedDescendantWithBlendMode); | 581 void updateDescendantDependentCompositingInputs(bool hasDescendantWithClipPa
th, bool hasNonIsolatedDescendantWithBlendMode); |
572 void didUpdateCompositingInputs(); | 582 void didUpdateCompositingInputs(); |
573 | 583 |
574 IntRect clippedAbsoluteBoundingBox() const { ASSERT(!m_needsAncestorDependen
tCompositingInputsUpdate); return m_ancestorDependentCompositingInputs.clippedAb
soluteBoundingBox; } | 584 IntRect clippedAbsoluteBoundingBox() const { ASSERT(!m_needsAncestorDependen
tCompositingInputsUpdate); return m_ancestorDependentCompositingInputs.clippedAb
soluteBoundingBox; } |
575 const PaintLayer* opacityAncestor() const { ASSERT(!m_needsAncestorDependent
CompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_ra
reAncestorDependentCompositingInputs->opacityAncestor : nullptr; } | 585 const PaintLayer* opacityAncestor() const { ASSERT(!m_needsAncestorDependent
CompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_ra
reAncestorDependentCompositingInputs->opacityAncestor : nullptr; } |
576 const PaintLayer* transformAncestor() const { ASSERT(!m_needsAncestorDepende
ntCompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_
rareAncestorDependentCompositingInputs->transformAncestor : nullptr; } | 586 const PaintLayer* transformAncestor() const { ASSERT(!m_needsAncestorDepende
ntCompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_
rareAncestorDependentCompositingInputs->transformAncestor : nullptr; } |
577 const PaintLayer* filterAncestor() const { ASSERT(!m_needsAncestorDependentC
ompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rar
eAncestorDependentCompositingInputs->filterAncestor : nullptr; } | 587 const PaintLayer* filterAncestor() const { ASSERT(!m_needsAncestorDependentC
ompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rar
eAncestorDependentCompositingInputs->filterAncestor : nullptr; } |
578 const LayoutObject* clippingContainer() const { ASSERT(!m_needsAncestorDepen
dentCompositingInputsUpdate); return m_ancestorDependentCompositingInputs.clippi
ngContainer; } | 588 const LayoutObject* clippingContainer() const { ASSERT(!m_needsAncestorDepen
dentCompositingInputsUpdate); return m_ancestorDependentCompositingInputs.clippi
ngContainer; } |
| 589 const PaintLayer* ancestorOverflowLayer() const { return m_rareAncestorDepen
dentCompositingInputs ? m_rareAncestorDependentCompositingInputs->ancestorOverfl
owLayer : nullptr; } |
579 const PaintLayer* ancestorScrollingLayer() const { ASSERT(!m_needsAncestorDe
pendentCompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs
? m_rareAncestorDependentCompositingInputs->ancestorScrollingLayer : nullptr; } | 590 const PaintLayer* ancestorScrollingLayer() const { ASSERT(!m_needsAncestorDe
pendentCompositingInputsUpdate); return m_rareAncestorDependentCompositingInputs
? m_rareAncestorDependentCompositingInputs->ancestorScrollingLayer : nullptr; } |
580 const PaintLayer* nearestFixedPositionLayer() const { ASSERT(!m_needsAncesto
rDependentCompositingInputsUpdate); return m_rareAncestorDependentCompositingInp
uts ? m_rareAncestorDependentCompositingInputs->nearestFixedPositionLayer : null
ptr; } | 591 const PaintLayer* nearestFixedPositionLayer() const { ASSERT(!m_needsAncesto
rDependentCompositingInputsUpdate); return m_rareAncestorDependentCompositingInp
uts ? m_rareAncestorDependentCompositingInputs->nearestFixedPositionLayer : null
ptr; } |
581 const PaintLayer* scrollParent() const { ASSERT(!m_needsAncestorDependentCom
positingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rareA
ncestorDependentCompositingInputs->scrollParent : nullptr; } | 592 const PaintLayer* scrollParent() const { ASSERT(!m_needsAncestorDependentCom
positingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rareA
ncestorDependentCompositingInputs->scrollParent : nullptr; } |
582 const PaintLayer* clipParent() const { ASSERT(!m_needsAncestorDependentCompo
sitingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rareAnc
estorDependentCompositingInputs->clipParent : nullptr; } | 593 const PaintLayer* clipParent() const { ASSERT(!m_needsAncestorDependentCompo
sitingInputsUpdate); return m_rareAncestorDependentCompositingInputs ? m_rareAnc
estorDependentCompositingInputs->clipParent : nullptr; } |
583 bool hasAncestorWithClipPath() const { ASSERT(!m_needsAncestorDependentCompo
sitingInputsUpdate); return m_hasAncestorWithClipPath; } | 594 bool hasAncestorWithClipPath() const { ASSERT(!m_needsAncestorDependentCompo
sitingInputsUpdate); return m_hasAncestorWithClipPath; } |
584 bool hasDescendantWithClipPath() const { ASSERT(!m_needsDescendantDependentC
ompositingInputsUpdate); return m_hasDescendantWithClipPath; } | 595 bool hasDescendantWithClipPath() const { ASSERT(!m_needsDescendantDependentC
ompositingInputsUpdate); return m_hasDescendantWithClipPath; } |
585 bool hasNonIsolatedDescendantWithBlendMode() const; | 596 bool hasNonIsolatedDescendantWithBlendMode() const; |
586 | 597 |
587 bool lostGroupedMapping() const { ASSERT(isAllowedToQueryCompositingState())
; return m_lostGroupedMapping; } | 598 bool lostGroupedMapping() const { ASSERT(isAllowedToQueryCompositingState())
; return m_lostGroupedMapping; } |
588 void setLostGroupedMapping(bool b) { m_lostGroupedMapping = b; } | 599 void setLostGroupedMapping(bool b) { m_lostGroupedMapping = b; } |
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680 void clearClipRectsCache() const { m_clipRectsCache.clear(); } | 691 void clearClipRectsCache() const { m_clipRectsCache.clear(); } |
681 | 692 |
682 private: | 693 private: |
683 // Bounding box in the coordinates of this layer. | 694 // Bounding box in the coordinates of this layer. |
684 LayoutRect logicalBoundingBox() const; | 695 LayoutRect logicalBoundingBox() const; |
685 | 696 |
686 bool hasOverflowControls() const; | 697 bool hasOverflowControls() const; |
687 | 698 |
688 void dirtyAncestorChainHasSelfPaintingLayerDescendantStatus(); | 699 void dirtyAncestorChainHasSelfPaintingLayerDescendantStatus(); |
689 | 700 |
690 // Returns true if the position changed. | |
691 bool updateLayerPosition(); | |
692 | |
693 void updateLayerPositionRecursive(); | 701 void updateLayerPositionRecursive(); |
694 void updateLayerPositionsAfterScrollRecursive(const DoubleSize& scrollDelta,
bool paintInvalidationContainerWasScrolled); | 702 void updateLayerPositionsAfterScrollRecursive(const DoubleSize& scrollDelta,
bool paintInvalidationContainerWasScrolled); |
695 | 703 |
696 void setNextSibling(PaintLayer* next) { m_next = next; } | 704 void setNextSibling(PaintLayer* next) { m_next = next; } |
697 void setPreviousSibling(PaintLayer* prev) { m_previous = prev; } | 705 void setPreviousSibling(PaintLayer* prev) { m_previous = prev; } |
698 void setFirstChild(PaintLayer* first) { m_first = first; } | 706 void setFirstChild(PaintLayer* first) { m_first = first; } |
699 void setLastChild(PaintLayer* last) { m_last = last; } | 707 void setLastChild(PaintLayer* last) { m_last = last; } |
700 | 708 |
701 void updateHasSelfPaintingLayerDescendant() const; | 709 void updateHasSelfPaintingLayerDescendant() const; |
702 PaintLayer* hitTestLayer(PaintLayer* rootLayer, PaintLayer* containerLayer,
HitTestResult&, | 710 PaintLayer* hitTestLayer(PaintLayer* rootLayer, PaintLayer* containerLayer,
HitTestResult&, |
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862 | 870 |
863 } // namespace blink | 871 } // namespace blink |
864 | 872 |
865 #ifndef NDEBUG | 873 #ifndef NDEBUG |
866 // Outside the WebCore namespace for ease of invocation from gdb. | 874 // Outside the WebCore namespace for ease of invocation from gdb. |
867 void showLayerTree(const blink::PaintLayer*); | 875 void showLayerTree(const blink::PaintLayer*); |
868 void showLayerTree(const blink::LayoutObject*); | 876 void showLayerTree(const blink::LayoutObject*); |
869 #endif | 877 #endif |
870 | 878 |
871 #endif // Layer_h | 879 #endif // Layer_h |
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