The Tor Browser / file comparison
comparison: layout/svg/nsSVGContainerFrame.h
layout/svg/nsSVGContainerFrame.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:63826b91326f |
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| 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_SVGCONTAINERFRAME_H | |
| 7 #define NS_SVGCONTAINERFRAME_H | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "nsContainerFrame.h" | |
| 11 #include "nsFrame.h" | |
| 12 #include "nsIFrame.h" | |
| 13 #include "nsISVGChildFrame.h" | |
| 14 #include "nsQueryFrame.h" | |
| 15 #include "nsRect.h" | |
| 16 #include "nsSVGUtils.h" | |
| 17 | |
| 18 class nsFrameList; | |
| 19 class nsIContent; | |
| 20 class nsIPresShell; | |
| 21 class nsRenderingContext; | |
| 22 class nsStyleContext; | |
| 23 | |
| 24 struct nsPoint; | |
| 25 struct nsRect; | |
| 26 struct nsIntRect; | |
| 27 | |
| 28 typedef nsContainerFrame nsSVGContainerFrameBase; | |
| 29 | |
| 30 /** | |
| 31 * Base class for SVG container frames. Frame sub-classes that do not | |
| 32 * display their contents directly (such as the frames for <marker> or | |
| 33 * <pattern>) just inherit this class. Frame sub-classes that do or can | |
| 34 * display their contents directly (such as the frames for inner-<svg> or | |
| 35 * <g>) inherit our nsDisplayContainerFrame sub-class. | |
| 36 * | |
| 37 * *** WARNING *** | |
| 38 * | |
| 39 * Do *not* blindly cast to SVG element types in this class's methods (see the | |
| 40 * warning comment for nsSVGDisplayContainerFrame below). | |
| 41 */ | |
| 42 class nsSVGContainerFrame : public nsSVGContainerFrameBase | |
| 43 { | |
| 44 friend nsIFrame* NS_NewSVGContainerFrame(nsIPresShell* aPresShell, | |
| 45 nsStyleContext* aContext); | |
| 46 protected: | |
| 47 nsSVGContainerFrame(nsStyleContext* aContext) | |
| 48 : nsSVGContainerFrameBase(aContext) | |
| 49 { | |
| 50 AddStateBits(NS_FRAME_SVG_LAYOUT); | |
| 51 } | |
| 52 | |
| 53 public: | |
| 54 NS_DECL_QUERYFRAME_TARGET(nsSVGContainerFrame) | |
| 55 NS_DECL_QUERYFRAME | |
| 56 NS_DECL_FRAMEARENA_HELPERS | |
| 57 | |
| 58 // Returns the transform to our gfxContext (to device pixels, not CSS px) | |
| 59 virtual gfxMatrix GetCanvasTM(uint32_t aFor, | |
| 60 nsIFrame* aTransformRoot = nullptr) { | |
| 61 return gfxMatrix(); | |
| 62 } | |
| 63 | |
| 64 /** | |
| 65 * Returns true if the frame's content has a transform that applies only to | |
| 66 * its children, and not to the frame itself. For example, an implicit | |
| 67 * transform introduced by a 'viewBox' attribute, or an explicit transform | |
| 68 * due to a root-<svg> having its currentScale/currentTransform properties | |
| 69 * set. If aTransform is non-null, then it will be set to the transform. | |
| 70 */ | |
| 71 virtual bool HasChildrenOnlyTransform(Matrix *aTransform) const { | |
| 72 return false; | |
| 73 } | |
| 74 | |
| 75 // nsIFrame: | |
| 76 virtual nsresult AppendFrames(ChildListID aListID, | |
| 77 nsFrameList& aFrameList) MOZ_OVERRIDE; | |
| 78 virtual nsresult InsertFrames(ChildListID aListID, | |
| 79 nsIFrame* aPrevFrame, | |
| 80 nsFrameList& aFrameList) MOZ_OVERRIDE; | |
| 81 virtual nsresult RemoveFrame(ChildListID aListID, | |
| 82 nsIFrame* aOldFrame) MOZ_OVERRIDE; | |
| 83 | |
| 84 virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE | |
| 85 { | |
| 86 return nsSVGContainerFrameBase::IsFrameOfType( | |
| 87 aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGContainer)); | |
| 88 } | |
| 89 | |
| 90 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 91 const nsRect& aDirtyRect, | |
| 92 const nsDisplayListSet& aLists) MOZ_OVERRIDE {} | |
| 93 | |
| 94 virtual bool UpdateOverflow() MOZ_OVERRIDE; | |
| 95 | |
| 96 protected: | |
| 97 /** | |
| 98 * Traverses a frame tree, marking any SVGTextFrame frames as dirty | |
| 99 * and calling InvalidateRenderingObservers() on it. | |
| 100 */ | |
| 101 static void ReflowSVGNonDisplayText(nsIFrame* aContainer); | |
| 102 }; | |
| 103 | |
| 104 /** | |
| 105 * Frame class or base-class for SVG containers that can or do display their | |
| 106 * contents directly. | |
| 107 * | |
| 108 * *** WARNING *** | |
| 109 * | |
| 110 * This class's methods can *not* assume that mContent points to an instance of | |
| 111 * an SVG element class since this class is inherited by | |
| 112 * nsSVGGenericContainerFrame which is used for unrecognized elements in the | |
| 113 * SVG namespace. Do *not* blindly cast to SVG element types. | |
| 114 */ | |
| 115 class nsSVGDisplayContainerFrame : public nsSVGContainerFrame, | |
| 116 public nsISVGChildFrame | |
| 117 { | |
| 118 protected: | |
| 119 nsSVGDisplayContainerFrame(nsStyleContext* aContext) | |
| 120 : nsSVGContainerFrame(aContext) | |
| 121 { | |
| 122 AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED); | |
| 123 } | |
| 124 | |
| 125 public: | |
| 126 NS_DECL_QUERYFRAME_TARGET(nsSVGDisplayContainerFrame) | |
| 127 NS_DECL_QUERYFRAME | |
| 128 NS_DECL_FRAMEARENA_HELPERS | |
| 129 | |
| 130 // nsIFrame: | |
| 131 virtual nsresult InsertFrames(ChildListID aListID, | |
| 132 nsIFrame* aPrevFrame, | |
| 133 nsFrameList& aFrameList) MOZ_OVERRIDE; | |
| 134 virtual nsresult RemoveFrame(ChildListID aListID, | |
| 135 nsIFrame* aOldFrame) MOZ_OVERRIDE; | |
| 136 virtual void Init(nsIContent* aContent, | |
| 137 nsIFrame* aParent, | |
| 138 nsIFrame* aPrevInFlow) MOZ_OVERRIDE; | |
| 139 | |
| 140 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 141 const nsRect& aDirtyRect, | |
| 142 const nsDisplayListSet& aLists) MOZ_OVERRIDE; | |
| 143 | |
| 144 virtual bool IsSVGTransformed(Matrix *aOwnTransform = nullptr, | |
| 145 Matrix *aFromParentTransform = nullptr) const MOZ_OVERRIDE; | |
| 146 | |
| 147 // nsISVGChildFrame interface: | |
| 148 virtual nsresult PaintSVG(nsRenderingContext* aContext, | |
| 149 const nsIntRect *aDirtyRect, | |
| 150 nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE; | |
| 151 virtual nsIFrame* GetFrameForPoint(const nsPoint &aPoint) MOZ_OVERRIDE; | |
| 152 virtual nsRect GetCoveredRegion() MOZ_OVERRIDE; | |
| 153 virtual void ReflowSVG() MOZ_OVERRIDE; | |
| 154 virtual void NotifySVGChanged(uint32_t aFlags) MOZ_OVERRIDE; | |
| 155 virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace, | |
| 156 uint32_t aFlags) MOZ_OVERRIDE; | |
| 157 virtual bool IsDisplayContainer() MOZ_OVERRIDE { return true; } | |
| 158 }; | |
| 159 | |
| 160 #endif |
