The Tor Browser / file comparison
comparison: layout/svg/nsSVGMaskFrame.h
layout/svg/nsSVGMaskFrame.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:d32b4857b83d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef __NS_SVGMASKFRAME_H__ | |
| 7 #define __NS_SVGMASKFRAME_H__ | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "gfxPattern.h" | |
| 11 #include "gfxMatrix.h" | |
| 12 #include "nsSVGContainerFrame.h" | |
| 13 #include "nsSVGUtils.h" | |
| 14 | |
| 15 class gfxContext; | |
| 16 class nsRenderingContext; | |
| 17 | |
| 18 typedef nsSVGContainerFrame nsSVGMaskFrameBase; | |
| 19 | |
| 20 class nsSVGMaskFrame : public nsSVGMaskFrameBase | |
| 21 { | |
| 22 friend nsIFrame* | |
| 23 NS_NewSVGMaskFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); | |
| 24 protected: | |
| 25 nsSVGMaskFrame(nsStyleContext* aContext) | |
| 26 : nsSVGMaskFrameBase(aContext) | |
| 27 , mInUse(false) | |
| 28 { | |
| 29 AddStateBits(NS_FRAME_IS_NONDISPLAY); | |
| 30 } | |
| 31 | |
| 32 public: | |
| 33 NS_DECL_FRAMEARENA_HELPERS | |
| 34 | |
| 35 // nsSVGMaskFrame method: | |
| 36 already_AddRefed<gfxPattern> ComputeMaskAlpha(nsRenderingContext *aContext, | |
| 37 nsIFrame* aParent, | |
| 38 const gfxMatrix &aMatrix, | |
| 39 float aOpacity = 1.0f); | |
| 40 | |
| 41 virtual nsresult AttributeChanged(int32_t aNameSpaceID, | |
| 42 nsIAtom* aAttribute, | |
| 43 int32_t aModType) MOZ_OVERRIDE; | |
| 44 | |
| 45 #ifdef DEBUG | |
| 46 virtual void Init(nsIContent* aContent, | |
| 47 nsIFrame* aParent, | |
| 48 nsIFrame* aPrevInFlow) MOZ_OVERRIDE; | |
| 49 #endif | |
| 50 | |
| 51 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 52 const nsRect& aDirtyRect, | |
| 53 const nsDisplayListSet& aLists) MOZ_OVERRIDE {} | |
| 54 | |
| 55 /** | |
| 56 * Get the "type" of the frame | |
| 57 * | |
| 58 * @see nsGkAtoms::svgMaskFrame | |
| 59 */ | |
| 60 virtual nsIAtom* GetType() const MOZ_OVERRIDE; | |
| 61 | |
| 62 #ifdef DEBUG_FRAME_DUMP | |
| 63 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE | |
| 64 { | |
| 65 return MakeFrameName(NS_LITERAL_STRING("SVGMask"), aResult); | |
| 66 } | |
| 67 #endif | |
| 68 | |
| 69 private: | |
| 70 // A helper class to allow us to paint masks safely. The helper | |
| 71 // automatically sets and clears the mInUse flag on the mask frame | |
| 72 // (to prevent nasty reference loops). It's easy to mess this up | |
| 73 // and break things, so this helper makes the code far more robust. | |
| 74 class MOZ_STACK_CLASS AutoMaskReferencer | |
| 75 { | |
| 76 public: | |
| 77 AutoMaskReferencer(nsSVGMaskFrame *aFrame | |
| 78 MOZ_GUARD_OBJECT_NOTIFIER_PARAM) | |
| 79 : mFrame(aFrame) { | |
| 80 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 81 NS_ASSERTION(!mFrame->mInUse, "reference loop!"); | |
| 82 mFrame->mInUse = true; | |
| 83 } | |
| 84 ~AutoMaskReferencer() { | |
| 85 mFrame->mInUse = false; | |
| 86 } | |
| 87 private: | |
| 88 nsSVGMaskFrame *mFrame; | |
| 89 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 90 }; | |
| 91 | |
| 92 nsIFrame *mMaskParent; | |
| 93 nsAutoPtr<gfxMatrix> mMaskParentMatrix; | |
| 94 // recursion prevention flag | |
| 95 bool mInUse; | |
| 96 | |
| 97 // nsSVGContainerFrame methods: | |
| 98 virtual gfxMatrix GetCanvasTM(uint32_t aFor, | |
| 99 nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE; | |
| 100 }; | |
| 101 | |
| 102 #endif |
