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
|
// Copyright (C) 2013 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef GraphicsContextState_h
#define GraphicsContextState_h
#include "platform/graphics/DrawLooperBuilder.h"
#include "platform/graphics/GraphicsTypes.h"
#include "platform/graphics/StrokeData.h"
#include "third_party/skia/include/core/SkColorFilter.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"
#include "wtf/PtrUtil.h"
#include <memory>
namespace blink {
// Encapsulates the state information we store for each pushed graphics state.
// Only GraphicsContext can use this class.
class PLATFORM_EXPORT GraphicsContextState final {
USING_FAST_MALLOC(GraphicsContextState);
public:
static std::unique_ptr<GraphicsContextState> create() {
return WTF::wrapUnique(new GraphicsContextState());
}
static std::unique_ptr<GraphicsContextState> createAndCopy(
const GraphicsContextState& other) {
return WTF::wrapUnique(new GraphicsContextState(other));
}
void copy(const GraphicsContextState&);
// SkPaint objects that reflect the current state. If the length of the
// path to be stroked is known, pass it in for correct dash or dot placement.
const SkPaint& strokePaint(int strokedPathLength = 0) const;
const SkPaint& fillPaint() const { return m_fillPaint; }
uint16_t saveCount() const { return m_saveCount; }
void incrementSaveCount() { ++m_saveCount; }
void decrementSaveCount() { --m_saveCount; }
// Stroke data
Color strokeColor() const { return m_strokePaint.getColor(); }
void setStrokeColor(const Color&);
const StrokeData& getStrokeData() const { return m_strokeData; }
void setStrokeStyle(StrokeStyle);
void setStrokeThickness(float);
void setLineCap(LineCap);
void setLineJoin(LineJoin);
void setMiterLimit(float);
void setLineDash(const DashArray&, float);
// Fill data
Color fillColor() const { return m_fillPaint.getColor(); }
void setFillColor(const Color&);
// Shadow. (This will need tweaking if we use draw loopers for other things.)
SkDrawLooper* drawLooper() const {
DCHECK_EQ(m_fillPaint.getLooper(), m_strokePaint.getLooper());
return m_fillPaint.getLooper();
}
void setDrawLooper(sk_sp<SkDrawLooper>);
// Text. (See TextModeFill & friends.)
TextDrawingModeFlags textDrawingMode() const { return m_textDrawingMode; }
void setTextDrawingMode(TextDrawingModeFlags mode) {
m_textDrawingMode = mode;
}
SkColorFilter* getColorFilter() const {
DCHECK_EQ(m_fillPaint.getColorFilter(), m_strokePaint.getColorFilter());
return m_fillPaint.getColorFilter();
}
void setColorFilter(sk_sp<SkColorFilter>);
// Image interpolation control.
InterpolationQuality getInterpolationQuality() const {
return m_interpolationQuality;
}
void setInterpolationQuality(InterpolationQuality);
bool shouldAntialias() const { return m_shouldAntialias; }
void setShouldAntialias(bool);
private:
GraphicsContextState();
explicit GraphicsContextState(const GraphicsContextState&);
GraphicsContextState& operator=(const GraphicsContextState&);
// This is mutable to enable dash path effect updates when the paint is
// fetched for use.
mutable SkPaint m_strokePaint;
SkPaint m_fillPaint;
StrokeData m_strokeData;
TextDrawingModeFlags m_textDrawingMode;
InterpolationQuality m_interpolationQuality;
uint16_t m_saveCount;
bool m_shouldAntialias : 1;
};
} // namespace blink
#endif // GraphicsContextState_h
|
