layout/svg/nsSVGClipPathFrame.h@deefc01c0e14 (annotated)
layout/svg/nsSVGClipPathFrame.h
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef __NS_SVGCLIPPATHFRAME_H__ |
| michael@0 | 7 | #define __NS_SVGCLIPPATHFRAME_H__ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "mozilla/Attributes.h" |
| michael@0 | 10 | #include "gfxMatrix.h" |
| michael@0 | 11 | #include "nsSVGContainerFrame.h" |
| michael@0 | 12 | #include "nsSVGUtils.h" |
| michael@0 | 13 | |
| michael@0 | 14 | class nsRenderingContext; |
| michael@0 | 15 | class nsISVGChildFrame; |
| michael@0 | 16 | |
| michael@0 | 17 | typedef nsSVGContainerFrame nsSVGClipPathFrameBase; |
| michael@0 | 18 | |
| michael@0 | 19 | class nsSVGClipPathFrame : public nsSVGClipPathFrameBase |
| michael@0 | 20 | { |
| michael@0 | 21 | friend nsIFrame* |
| michael@0 | 22 | NS_NewSVGClipPathFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); |
| michael@0 | 23 | protected: |
| michael@0 | 24 | nsSVGClipPathFrame(nsStyleContext* aContext) |
| michael@0 | 25 | : nsSVGClipPathFrameBase(aContext) |
| michael@0 | 26 | , mInUse(false) |
| michael@0 | 27 | { |
| michael@0 | 28 | AddStateBits(NS_FRAME_IS_NONDISPLAY); |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | public: |
| michael@0 | 32 | NS_DECL_FRAMEARENA_HELPERS |
| michael@0 | 33 | |
| michael@0 | 34 | // nsIFrame methods: |
| michael@0 | 35 | virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, |
| michael@0 | 36 | const nsRect& aDirtyRect, |
| michael@0 | 37 | const nsDisplayListSet& aLists) MOZ_OVERRIDE {} |
| michael@0 | 38 | |
| michael@0 | 39 | // nsSVGClipPathFrame methods: |
| michael@0 | 40 | nsresult ClipPaint(nsRenderingContext* aContext, |
| michael@0 | 41 | nsIFrame* aParent, |
| michael@0 | 42 | const gfxMatrix &aMatrix); |
| michael@0 | 43 | |
| michael@0 | 44 | bool ClipHitTest(nsIFrame* aParent, |
| michael@0 | 45 | const gfxMatrix &aMatrix, |
| michael@0 | 46 | const nsPoint &aPoint); |
| michael@0 | 47 | |
| michael@0 | 48 | // Check if this clipPath is made up of more than one geometry object. |
| michael@0 | 49 | // If so, the clipping API in cairo isn't enough and we need to use |
| michael@0 | 50 | // mask based clipping. |
| michael@0 | 51 | bool IsTrivial(nsISVGChildFrame **aSingleChild = nullptr); |
| michael@0 | 52 | |
| michael@0 | 53 | bool IsValid(); |
| michael@0 | 54 | |
| michael@0 | 55 | // nsIFrame interface: |
| michael@0 | 56 | virtual nsresult AttributeChanged(int32_t aNameSpaceID, |
| michael@0 | 57 | nsIAtom* aAttribute, |
| michael@0 | 58 | int32_t aModType) MOZ_OVERRIDE; |
| michael@0 | 59 | |
| michael@0 | 60 | virtual void Init(nsIContent* aContent, |
| michael@0 | 61 | nsIFrame* aParent, |
| michael@0 | 62 | nsIFrame* aPrevInFlow) MOZ_OVERRIDE; |
| michael@0 | 63 | |
| michael@0 | 64 | /** |
| michael@0 | 65 | * Get the "type" of the frame |
| michael@0 | 66 | * |
| michael@0 | 67 | * @see nsGkAtoms::svgClipPathFrame |
| michael@0 | 68 | */ |
| michael@0 | 69 | virtual nsIAtom* GetType() const MOZ_OVERRIDE; |
| michael@0 | 70 | |
| michael@0 | 71 | #ifdef DEBUG_FRAME_DUMP |
| michael@0 | 72 | virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE |
| michael@0 | 73 | { |
| michael@0 | 74 | return MakeFrameName(NS_LITERAL_STRING("SVGClipPath"), aResult); |
| michael@0 | 75 | } |
| michael@0 | 76 | #endif |
| michael@0 | 77 | |
| michael@0 | 78 | private: |
| michael@0 | 79 | // A helper class to allow us to paint clip paths safely. The helper |
| michael@0 | 80 | // automatically sets and clears the mInUse flag on the clip path frame |
| michael@0 | 81 | // (to prevent nasty reference loops). It's easy to mess this up |
| michael@0 | 82 | // and break things, so this helper makes the code far more robust. |
| michael@0 | 83 | class MOZ_STACK_CLASS AutoClipPathReferencer |
| michael@0 | 84 | { |
| michael@0 | 85 | public: |
| michael@0 | 86 | AutoClipPathReferencer(nsSVGClipPathFrame *aFrame |
| michael@0 | 87 | MOZ_GUARD_OBJECT_NOTIFIER_PARAM) |
| michael@0 | 88 | : mFrame(aFrame) { |
| michael@0 | 89 | MOZ_GUARD_OBJECT_NOTIFIER_INIT; |
| michael@0 | 90 | NS_ASSERTION(!mFrame->mInUse, "reference loop!"); |
| michael@0 | 91 | mFrame->mInUse = true; |
| michael@0 | 92 | } |
| michael@0 | 93 | ~AutoClipPathReferencer() { |
| michael@0 | 94 | mFrame->mInUse = false; |
| michael@0 | 95 | } |
| michael@0 | 96 | private: |
| michael@0 | 97 | nsSVGClipPathFrame *mFrame; |
| michael@0 | 98 | MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER |
| michael@0 | 99 | }; |
| michael@0 | 100 | |
| michael@0 | 101 | nsIFrame *mClipParent; |
| michael@0 | 102 | nsAutoPtr<gfxMatrix> mClipParentMatrix; |
| michael@0 | 103 | // recursion prevention flag |
| michael@0 | 104 | bool mInUse; |
| michael@0 | 105 | |
| michael@0 | 106 | // nsSVGContainerFrame methods: |
| michael@0 | 107 | virtual gfxMatrix GetCanvasTM(uint32_t aFor, |
| michael@0 | 108 | nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE; |
| michael@0 | 109 | }; |
| michael@0 | 110 | |
| michael@0 | 111 | #endif |
