The Tor Browser / file comparison
comparison: layout/svg/nsSVGClipPathFrame.h
layout/svg/nsSVGClipPathFrame.h
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
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| -1:000000000000 | 0:3e58a3cb7d3e |
|---|---|
| 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_SVGCLIPPATHFRAME_H__ | |
| 7 #define __NS_SVGCLIPPATHFRAME_H__ | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "gfxMatrix.h" | |
| 11 #include "nsSVGContainerFrame.h" | |
| 12 #include "nsSVGUtils.h" | |
| 13 | |
| 14 class nsRenderingContext; | |
| 15 class nsISVGChildFrame; | |
| 16 | |
| 17 typedef nsSVGContainerFrame nsSVGClipPathFrameBase; | |
| 18 | |
| 19 class nsSVGClipPathFrame : public nsSVGClipPathFrameBase | |
| 20 { | |
| 21 friend nsIFrame* | |
| 22 NS_NewSVGClipPathFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); | |
| 23 protected: | |
| 24 nsSVGClipPathFrame(nsStyleContext* aContext) | |
| 25 : nsSVGClipPathFrameBase(aContext) | |
| 26 , mInUse(false) | |
| 27 { | |
| 28 AddStateBits(NS_FRAME_IS_NONDISPLAY); | |
| 29 } | |
| 30 | |
| 31 public: | |
| 32 NS_DECL_FRAMEARENA_HELPERS | |
| 33 | |
| 34 // nsIFrame methods: | |
| 35 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 36 const nsRect& aDirtyRect, | |
| 37 const nsDisplayListSet& aLists) MOZ_OVERRIDE {} | |
| 38 | |
| 39 // nsSVGClipPathFrame methods: | |
| 40 nsresult ClipPaint(nsRenderingContext* aContext, | |
| 41 nsIFrame* aParent, | |
| 42 const gfxMatrix &aMatrix); | |
| 43 | |
| 44 bool ClipHitTest(nsIFrame* aParent, | |
| 45 const gfxMatrix &aMatrix, | |
| 46 const nsPoint &aPoint); | |
| 47 | |
| 48 // Check if this clipPath is made up of more than one geometry object. | |
| 49 // If so, the clipping API in cairo isn't enough and we need to use | |
| 50 // mask based clipping. | |
| 51 bool IsTrivial(nsISVGChildFrame **aSingleChild = nullptr); | |
| 52 | |
| 53 bool IsValid(); | |
| 54 | |
| 55 // nsIFrame interface: | |
| 56 virtual nsresult AttributeChanged(int32_t aNameSpaceID, | |
| 57 nsIAtom* aAttribute, | |
| 58 int32_t aModType) MOZ_OVERRIDE; | |
| 59 | |
| 60 virtual void Init(nsIContent* aContent, | |
| 61 nsIFrame* aParent, | |
| 62 nsIFrame* aPrevInFlow) MOZ_OVERRIDE; | |
| 63 | |
| 64 /** | |
| 65 * Get the "type" of the frame | |
| 66 * | |
| 67 * @see nsGkAtoms::svgClipPathFrame | |
| 68 */ | |
| 69 virtual nsIAtom* GetType() const MOZ_OVERRIDE; | |
| 70 | |
| 71 #ifdef DEBUG_FRAME_DUMP | |
| 72 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE | |
| 73 { | |
| 74 return MakeFrameName(NS_LITERAL_STRING("SVGClipPath"), aResult); | |
| 75 } | |
| 76 #endif | |
| 77 | |
| 78 private: | |
| 79 // A helper class to allow us to paint clip paths safely. The helper | |
| 80 // automatically sets and clears the mInUse flag on the clip path frame | |
| 81 // (to prevent nasty reference loops). It's easy to mess this up | |
| 82 // and break things, so this helper makes the code far more robust. | |
| 83 class MOZ_STACK_CLASS AutoClipPathReferencer | |
| 84 { | |
| 85 public: | |
| 86 AutoClipPathReferencer(nsSVGClipPathFrame *aFrame | |
| 87 MOZ_GUARD_OBJECT_NOTIFIER_PARAM) | |
| 88 : mFrame(aFrame) { | |
| 89 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 90 NS_ASSERTION(!mFrame->mInUse, "reference loop!"); | |
| 91 mFrame->mInUse = true; | |
| 92 } | |
| 93 ~AutoClipPathReferencer() { | |
| 94 mFrame->mInUse = false; | |
| 95 } | |
| 96 private: | |
| 97 nsSVGClipPathFrame *mFrame; | |
| 98 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 99 }; | |
| 100 | |
| 101 nsIFrame *mClipParent; | |
| 102 nsAutoPtr<gfxMatrix> mClipParentMatrix; | |
| 103 // recursion prevention flag | |
| 104 bool mInUse; | |
| 105 | |
| 106 // nsSVGContainerFrame methods: | |
| 107 virtual gfxMatrix GetCanvasTM(uint32_t aFor, | |
| 108 nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE; | |
| 109 }; | |
| 110 | |
| 111 #endif |
