1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/svg/nsSVGMarkerFrame.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,188 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef __NS_SVGMARKERFRAME_H__
1.10 +#define __NS_SVGMARKERFRAME_H__
1.11 +
1.12 +#include "mozilla/Attributes.h"
1.13 +#include "gfxMatrix.h"
1.14 +#include "gfxRect.h"
1.15 +#include "nsFrame.h"
1.16 +#include "nsLiteralString.h"
1.17 +#include "nsQueryFrame.h"
1.18 +#include "nsSVGContainerFrame.h"
1.19 +#include "nsSVGUtils.h"
1.20 +
1.21 +class nsIAtom;
1.22 +class nsIContent;
1.23 +class nsIFrame;
1.24 +class nsIPresShell;
1.25 +class nsRenderingContext;
1.26 +class nsStyleContext;
1.27 +class nsSVGPathGeometryFrame;
1.28 +
1.29 +namespace mozilla {
1.30 +namespace dom {
1.31 +class SVGSVGElement;
1.32 +}
1.33 +}
1.34 +
1.35 +struct nsSVGMark;
1.36 +
1.37 +typedef nsSVGContainerFrame nsSVGMarkerFrameBase;
1.38 +
1.39 +class nsSVGMarkerFrame : public nsSVGMarkerFrameBase
1.40 +{
1.41 + friend class nsSVGMarkerAnonChildFrame;
1.42 + friend nsIFrame*
1.43 + NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
1.44 +protected:
1.45 + nsSVGMarkerFrame(nsStyleContext* aContext)
1.46 + : nsSVGMarkerFrameBase(aContext)
1.47 + , mMarkedFrame(nullptr)
1.48 + , mInUse(false)
1.49 + , mInUse2(false)
1.50 + {
1.51 + AddStateBits(NS_FRAME_IS_NONDISPLAY);
1.52 + }
1.53 +
1.54 +public:
1.55 + NS_DECL_FRAMEARENA_HELPERS
1.56 +
1.57 + // nsIFrame interface:
1.58 +#ifdef DEBUG
1.59 + virtual void Init(nsIContent* aContent,
1.60 + nsIFrame* aParent,
1.61 + nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
1.62 +#endif
1.63 +
1.64 + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.65 + const nsRect& aDirtyRect,
1.66 + const nsDisplayListSet& aLists) MOZ_OVERRIDE {}
1.67 +
1.68 + virtual nsresult AttributeChanged(int32_t aNameSpaceID,
1.69 + nsIAtom* aAttribute,
1.70 + int32_t aModType) MOZ_OVERRIDE;
1.71 + /**
1.72 + * Get the "type" of the frame
1.73 + *
1.74 + * @see nsGkAtoms::svgMarkerFrame
1.75 + */
1.76 + virtual nsIAtom* GetType() const MOZ_OVERRIDE;
1.77 +
1.78 +#ifdef DEBUG_FRAME_DUMP
1.79 + virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
1.80 + {
1.81 + return MakeFrameName(NS_LITERAL_STRING("SVGMarker"), aResult);
1.82 + }
1.83 +#endif
1.84 +
1.85 + virtual nsIFrame* GetContentInsertionFrame() MOZ_OVERRIDE {
1.86 + // Any children must be added to our single anonymous inner frame kid.
1.87 + NS_ABORT_IF_FALSE(GetFirstPrincipalChild() &&
1.88 + GetFirstPrincipalChild()->GetType() ==
1.89 + nsGkAtoms::svgMarkerAnonChildFrame,
1.90 + "Where is our anonymous child?");
1.91 + return GetFirstPrincipalChild()->GetContentInsertionFrame();
1.92 + }
1.93 +
1.94 + // nsSVGMarkerFrame methods:
1.95 + nsresult PaintMark(nsRenderingContext *aContext,
1.96 + nsSVGPathGeometryFrame *aMarkedFrame,
1.97 + nsSVGMark *aMark,
1.98 + float aStrokeWidth);
1.99 +
1.100 + SVGBBox GetMarkBBoxContribution(const Matrix &aToBBoxUserspace,
1.101 + uint32_t aFlags,
1.102 + nsSVGPathGeometryFrame *aMarkedFrame,
1.103 + const nsSVGMark *aMark,
1.104 + float aStrokeWidth);
1.105 +
1.106 +private:
1.107 + // stuff needed for callback
1.108 + nsSVGPathGeometryFrame *mMarkedFrame;
1.109 + float mStrokeWidth, mX, mY, mAutoAngle;
1.110 + bool mIsStart; // whether the callback is for a marker-start marker
1.111 +
1.112 + // nsSVGContainerFrame methods:
1.113 + virtual gfxMatrix GetCanvasTM(uint32_t aFor,
1.114 + nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE;
1.115 +
1.116 + // A helper class to allow us to paint markers safely. The helper
1.117 + // automatically sets and clears the mInUse flag on the marker frame (to
1.118 + // prevent nasty reference loops) as well as the reference to the marked
1.119 + // frame and its coordinate context. It's easy to mess this up
1.120 + // and break things, so this helper makes the code far more robust.
1.121 + class MOZ_STACK_CLASS AutoMarkerReferencer
1.122 + {
1.123 + public:
1.124 + AutoMarkerReferencer(nsSVGMarkerFrame *aFrame,
1.125 + nsSVGPathGeometryFrame *aMarkedFrame
1.126 + MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
1.127 + ~AutoMarkerReferencer();
1.128 + private:
1.129 + nsSVGMarkerFrame *mFrame;
1.130 + MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
1.131 + };
1.132 +
1.133 + // nsSVGMarkerFrame methods:
1.134 + void SetParentCoordCtxProvider(mozilla::dom::SVGSVGElement *aContext);
1.135 +
1.136 + // recursion prevention flag
1.137 + bool mInUse;
1.138 +
1.139 + // second recursion prevention flag, for GetCanvasTM()
1.140 + bool mInUse2;
1.141 +};
1.142 +
1.143 +////////////////////////////////////////////////////////////////////////
1.144 +// nsMarkerAnonChildFrame class
1.145 +
1.146 +typedef nsSVGDisplayContainerFrame nsSVGMarkerAnonChildFrameBase;
1.147 +
1.148 +/**
1.149 + */
1.150 +class nsSVGMarkerAnonChildFrame
1.151 + : public nsSVGMarkerAnonChildFrameBase
1.152 +{
1.153 + friend nsIFrame*
1.154 + NS_NewSVGMarkerAnonChildFrame(nsIPresShell* aPresShell,
1.155 + nsStyleContext* aContext);
1.156 +
1.157 + nsSVGMarkerAnonChildFrame(nsStyleContext* aContext)
1.158 + : nsSVGMarkerAnonChildFrameBase(aContext)
1.159 + {}
1.160 +
1.161 +public:
1.162 + NS_DECL_FRAMEARENA_HELPERS
1.163 +
1.164 +#ifdef DEBUG
1.165 + virtual void Init(nsIContent* aContent,
1.166 + nsIFrame* aParent,
1.167 + nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
1.168 +#endif
1.169 +
1.170 +#ifdef DEBUG_FRAME_DUMP
1.171 + virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE {
1.172 + return MakeFrameName(NS_LITERAL_STRING("SVGMarkerAnonChild"), aResult);
1.173 + }
1.174 +#endif
1.175 +
1.176 + /**
1.177 + * Get the "type" of the frame
1.178 + *
1.179 + * @see nsGkAtoms::svgMarkerAnonChildFrame
1.180 + */
1.181 + virtual nsIAtom* GetType() const MOZ_OVERRIDE;
1.182 +
1.183 + // nsSVGContainerFrame methods:
1.184 + virtual gfxMatrix GetCanvasTM(uint32_t aFor,
1.185 + nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE
1.186 + {
1.187 + nsSVGMarkerFrame* marker = static_cast<nsSVGMarkerFrame*>(mParent);
1.188 + return marker->GetCanvasTM(aFor, aTransformRoot);
1.189 + }
1.190 +};
1.191 +#endif
