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
|
/**
* Copyright (C) 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Google, Inc. All rights reserved.
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2012 Zoltan Herczeg <zherczeg@webkit.org>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef SVGRenderingContext_h
#define SVGRenderingContext_h
#include "core/paint/FloatClipRecorder.h"
#include "core/paint/TransparencyRecorder.h"
#include "core/rendering/svg/RenderSVGResourceClipper.h"
#include "platform/graphics/paint/ClipPathRecorder.h"
#include "platform/transforms/AffineTransform.h"
namespace blink {
class RenderObject;
struct PaintInfo;
class RenderSVGResourceFilter;
class RenderSVGResourceMasker;
class SubtreeContentTransformScope {
public:
SubtreeContentTransformScope(const AffineTransform&);
~SubtreeContentTransformScope();
private:
AffineTransform m_savedContentTransformation;
};
// SVGRenderingContext
class SVGRenderingContext {
STACK_ALLOCATED();
public:
// Does not start rendering.
SVGRenderingContext()
: m_renderingFlags(0)
, m_object(nullptr)
, m_paintInfo(nullptr)
, m_filter(nullptr)
, m_clipper(nullptr)
, m_clipperState(RenderSVGResourceClipper::ClipperNotApplied)
, m_masker(nullptr)
{
}
SVGRenderingContext(RenderObject* object, PaintInfo& paintinfo)
: m_renderingFlags(0)
, m_object(nullptr)
, m_paintInfo(nullptr)
, m_filter(nullptr)
, m_clipper(nullptr)
, m_clipperState(RenderSVGResourceClipper::ClipperNotApplied)
, m_masker(nullptr)
{
prepareToRenderSVGContent(object, paintinfo);
}
// Automatically finishes context rendering.
~SVGRenderingContext();
// Used by all SVG renderers who apply clip/filter/etc. resources to the renderer content.
void prepareToRenderSVGContent(RenderObject*, PaintInfo&);
bool isRenderingPrepared() const { return m_renderingFlags & RenderingPrepared; }
bool isIsolationInstalled() const;
static void renderSubtree(GraphicsContext*, RenderObject*);
static float calculateScreenFontSizeScalingFactor(const RenderObject*);
private:
// To properly revert partially successful initializtions in the destructor, we record all successful steps.
enum RenderingFlags {
RenderingPrepared = 1,
PostApplyResources = 1 << 1,
PrepareToRenderSVGContentWasCalled = 1 << 2
};
int m_renderingFlags;
RawPtrWillBeMember<RenderObject> m_object;
PaintInfo* m_paintInfo;
IntRect m_savedPaintRect;
RawPtrWillBeMember<RenderSVGResourceFilter> m_filter;
RawPtrWillBeMember<RenderSVGResourceClipper> m_clipper;
RenderSVGResourceClipper::ClipperState m_clipperState;
RawPtrWillBeMember<RenderSVGResourceMasker> m_masker;
OwnPtr<TransparencyRecorder> m_transparencyRecorder;
OwnPtr<FloatClipRecorder> m_clipRecorder;
OwnPtr<ClipPathRecorder> m_clipPathRecorder;
};
} // namespace blink
#endif // SVGRenderingContext_h
|
