1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __NS_SVGMARKERFRAME_H__
#define __NS_SVGMARKERFRAME_H__
#include "mozilla/Attributes.h"
#include "gfxMatrix.h"
#include "gfxRect.h"
#include "nsFrame.h"
#include "nsLiteralString.h"
#include "nsQueryFrame.h"
#include "nsSVGContainerFrame.h"
#include "nsSVGUtils.h"
class gfxContext;
class nsSVGPathGeometryFrame;
namespace mozilla {
namespace dom {
class SVGSVGElement;
} // namespace dom
} // namespace mozilla
struct nsSVGMark;
class nsSVGMarkerFrame : public nsSVGContainerFrame
{
friend class nsSVGMarkerAnonChildFrame;
friend nsContainerFrame*
NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
protected:
explicit nsSVGMarkerFrame(nsStyleContext* aContext)
: nsSVGContainerFrame(aContext)
, mMarkedFrame(nullptr)
, mInUse(false)
, mInUse2(false)
{
AddStateBits(NS_FRAME_IS_NONDISPLAY);
}
public:
NS_DECL_FRAMEARENA_HELPERS
// nsIFrame interface:
#ifdef DEBUG
virtual void Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
#endif
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) override {}
virtual nsresult AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType) override;
/**
* Get the "type" of the frame
*
* @see nsGkAtoms::svgMarkerFrame
*/
virtual nsIAtom* GetType() const override;
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override
{
return MakeFrameName(NS_LITERAL_STRING("SVGMarker"), aResult);
}
#endif
virtual nsContainerFrame* GetContentInsertionFrame() override {
// Any children must be added to our single anonymous inner frame kid.
MOZ_ASSERT(PrincipalChildList().FirstChild() &&
PrincipalChildList().FirstChild()->GetType() ==
nsGkAtoms::svgMarkerAnonChildFrame,
"Where is our anonymous child?");
return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
}
// nsSVGMarkerFrame methods:
nsresult PaintMark(gfxContext& aContext,
const gfxMatrix& aToMarkedFrameUserSpace,
nsSVGPathGeometryFrame *aMarkedFrame,
nsSVGMark *aMark,
float aStrokeWidth);
SVGBBox GetMarkBBoxContribution(const Matrix &aToBBoxUserspace,
uint32_t aFlags,
nsSVGPathGeometryFrame *aMarkedFrame,
const nsSVGMark *aMark,
float aStrokeWidth);
private:
// stuff needed for callback
nsSVGPathGeometryFrame *mMarkedFrame;
float mStrokeWidth, mX, mY, mAutoAngle;
bool mIsStart; // whether the callback is for a marker-start marker
// nsSVGContainerFrame methods:
virtual gfxMatrix GetCanvasTM() override;
// A helper class to allow us to paint markers safely. The helper
// automatically sets and clears the mInUse flag on the marker frame (to
// prevent nasty reference loops) as well as the reference to the marked
// frame and its coordinate context. It's easy to mess this up
// and break things, so this helper makes the code far more robust.
class MOZ_RAII AutoMarkerReferencer
{
public:
AutoMarkerReferencer(nsSVGMarkerFrame *aFrame,
nsSVGPathGeometryFrame *aMarkedFrame
MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
~AutoMarkerReferencer();
private:
nsSVGMarkerFrame *mFrame;
MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
};
// nsSVGMarkerFrame methods:
void SetParentCoordCtxProvider(mozilla::dom::SVGSVGElement *aContext);
// recursion prevention flag
bool mInUse;
// second recursion prevention flag, for GetCanvasTM()
bool mInUse2;
};
////////////////////////////////////////////////////////////////////////
// nsMarkerAnonChildFrame class
class nsSVGMarkerAnonChildFrame : public nsSVGDisplayContainerFrame
{
friend nsContainerFrame*
NS_NewSVGMarkerAnonChildFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext);
explicit nsSVGMarkerAnonChildFrame(nsStyleContext* aContext)
: nsSVGDisplayContainerFrame(aContext)
{}
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
virtual void Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
#endif
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override {
return MakeFrameName(NS_LITERAL_STRING("SVGMarkerAnonChild"), aResult);
}
#endif
/**
* Get the "type" of the frame
*
* @see nsGkAtoms::svgMarkerAnonChildFrame
*/
virtual nsIAtom* GetType() const override;
// nsSVGContainerFrame methods:
virtual gfxMatrix GetCanvasTM() override
{
return static_cast<nsSVGMarkerFrame*>(GetParent())->GetCanvasTM();
}
};
#endif
|
