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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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| 468 } | 468 } |
| 469 | 469 |
| 470 bool scrollsOverflow() const; | 470 bool scrollsOverflow() const; |
| 471 | 471 |
| 472 CompositingReasons potentialCompositingReasonsFromStyle() const { return m_p
otentialCompositingReasonsFromStyle; } | 472 CompositingReasons potentialCompositingReasonsFromStyle() const { return m_p
otentialCompositingReasonsFromStyle; } |
| 473 void setPotentialCompositingReasonsFromStyle(CompositingReasons reasons) { A
SSERT(reasons == (reasons & CompositingReasonComboAllStyleDeterminedReasons)); m
_potentialCompositingReasonsFromStyle = reasons; } | 473 void setPotentialCompositingReasonsFromStyle(CompositingReasons reasons) { A
SSERT(reasons == (reasons & CompositingReasonComboAllStyleDeterminedReasons)); m
_potentialCompositingReasonsFromStyle = reasons; } |
| 474 | 474 |
| 475 bool hasStyleDeterminedDirectCompositingReasons() const { return m_potential
CompositingReasonsFromStyle & CompositingReasonComboAllDirectStyleDeterminedReas
ons; } | 475 bool hasStyleDeterminedDirectCompositingReasons() const { return m_potential
CompositingReasonsFromStyle & CompositingReasonComboAllDirectStyleDeterminedReas
ons; } |
| 476 | 476 |
| 477 class AncestorDependentCompositingInputs { | 477 class AncestorDependentCompositingInputs { |
| 478 DISALLOW_ALLOCATION(); | 478 DISALLOW_NEW(); |
| 479 public: | 479 public: |
| 480 AncestorDependentCompositingInputs() | 480 AncestorDependentCompositingInputs() |
| 481 : opacityAncestor(0) | 481 : opacityAncestor(0) |
| 482 , transformAncestor(0) | 482 , transformAncestor(0) |
| 483 , filterAncestor(0) | 483 , filterAncestor(0) |
| 484 , clippingContainer(0) | 484 , clippingContainer(0) |
| 485 , ancestorScrollingLayer(0) | 485 , ancestorScrollingLayer(0) |
| 486 , nearestFixedPositionLayer(0) | 486 , nearestFixedPositionLayer(0) |
| 487 , scrollParent(0) | 487 , scrollParent(0) |
| 488 , clipParent(0) | 488 , clipParent(0) |
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| 509 // blink so that it may be used as a promotion trigger. Layers with clip | 509 // blink so that it may be used as a promotion trigger. Layers with clip |
| 510 // parents escape the clip of a stacking tree ancestor. The compositor | 510 // parents escape the clip of a stacking tree ancestor. The compositor |
| 511 // needs to know about clip parents in order to circumvent its normal | 511 // needs to know about clip parents in order to circumvent its normal |
| 512 // clipping logic. | 512 // clipping logic. |
| 513 const PaintLayer* clipParent; | 513 const PaintLayer* clipParent; |
| 514 | 514 |
| 515 unsigned hasAncestorWithClipPath : 1; | 515 unsigned hasAncestorWithClipPath : 1; |
| 516 }; | 516 }; |
| 517 | 517 |
| 518 class DescendantDependentCompositingInputs { | 518 class DescendantDependentCompositingInputs { |
| 519 DISALLOW_ALLOCATION(); | 519 DISALLOW_NEW(); |
| 520 public: | 520 public: |
| 521 DescendantDependentCompositingInputs() | 521 DescendantDependentCompositingInputs() |
| 522 : hasDescendantWithClipPath(false) | 522 : hasDescendantWithClipPath(false) |
| 523 , hasNonIsolatedDescendantWithBlendMode(false) | 523 , hasNonIsolatedDescendantWithBlendMode(false) |
| 524 { } | 524 { } |
| 525 | 525 |
| 526 unsigned hasDescendantWithClipPath : 1; | 526 unsigned hasDescendantWithClipPath : 1; |
| 527 unsigned hasNonIsolatedDescendantWithBlendMode : 1; | 527 unsigned hasNonIsolatedDescendantWithBlendMode : 1; |
| 528 }; | 528 }; |
| 529 | 529 |
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| 810 | 810 |
| 811 } // namespace blink | 811 } // namespace blink |
| 812 | 812 |
| 813 #ifndef NDEBUG | 813 #ifndef NDEBUG |
| 814 // Outside the WebCore namespace for ease of invocation from gdb. | 814 // Outside the WebCore namespace for ease of invocation from gdb. |
| 815 void showLayerTree(const blink::PaintLayer*); | 815 void showLayerTree(const blink::PaintLayer*); |
| 816 void showLayerTree(const blink::LayoutObject*); | 816 void showLayerTree(const blink::LayoutObject*); |
| 817 #endif | 817 #endif |
| 818 | 818 |
| 819 #endif // Layer_h | 819 #endif // Layer_h |
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