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
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 ImageBuffer_h
#define ImageBuffer_h
#include "AffineTransform.h"
#include "ColorSpace.h"
#include "GraphicsTypes.h"
#include "GraphicsTypes3D.h"
#include "IntSize.h"
#include "ImageBufferData.h"
#include "PlatformLayer.h"
#include <runtime/Uint8ClampedArray.h>
#include <wtf/Forward.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Vector.h>
#if PLATFORM(QT)
QT_BEGIN_NAMESPACE
class QOpenGLContext;
QT_END_NAMESPACE
#endif
namespace WebCore {
class FloatRect;
class GraphicsContext;
class GraphicsContext3D;
class Image;
class ImageData;
class IntPoint;
class IntRect;
enum Multiply {
Premultiplied,
Unmultiplied
};
enum BackingStoreCopy {
CopyBackingStore, // Guarantee subsequent draws don't affect the copy.
DontCopyBackingStore // Subsequent draws may affect the copy.
};
enum ScaleBehavior {
Scaled,
Unscaled
};
class ImageBuffer {
WTF_MAKE_NONCOPYABLE(ImageBuffer); WTF_MAKE_FAST_ALLOCATED;
friend class IOSurface;
public:
// Will return a null pointer on allocation failure.
static std::unique_ptr<ImageBuffer> create(const FloatSize& size, RenderingMode renderingMode, float resolutionScale = 1, ColorSpace colorSpace = ColorSpaceSRGB)
{
bool success = false;
std::unique_ptr<ImageBuffer> buffer(new ImageBuffer(size, resolutionScale, colorSpace, renderingMode, success));
if (!success)
return nullptr;
return buffer;
}
static std::unique_ptr<ImageBuffer> createCompatibleBuffer(const FloatSize&, float resolutionScale, ColorSpace, const GraphicsContext&, bool hasAlpha);
#if PLATFORM(QT) && ENABLE(ACCELERATED_2D_CANVAS)
static std::unique_ptr<ImageBuffer> createCompatibleBuffer(const IntSize&, float resolutionScale, ColorSpace, QOpenGLContext*);
#endif
WEBCORE_EXPORT ~ImageBuffer();
// The actual resolution of the backing store
const IntSize& internalSize() const { return m_size; }
const IntSize& logicalSize() const { return m_logicalSize; }
FloatSize sizeForDestinationSize(FloatSize) const;
float resolutionScale() const { return m_resolutionScale; }
WEBCORE_EXPORT GraphicsContext& context() const;
WEBCORE_EXPORT RefPtr<Image> copyImage(BackingStoreCopy = CopyBackingStore, ScaleBehavior = Scaled) const;
WEBCORE_EXPORT static RefPtr<Image> sinkIntoImage(std::unique_ptr<ImageBuffer>, ScaleBehavior = Scaled);
// Give hints on the faster copyImage Mode, return DontCopyBackingStore if it supports the DontCopyBackingStore behavior
// or return CopyBackingStore if it doesn't.
static BackingStoreCopy fastCopyImageMode();
enum CoordinateSystem { LogicalCoordinateSystem, BackingStoreCoordinateSystem };
PassRefPtr<Uint8ClampedArray> getUnmultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
PassRefPtr<Uint8ClampedArray> getPremultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
void putByteArray(Multiply multiplied, Uint8ClampedArray*, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem = LogicalCoordinateSystem);
void convertToLuminanceMask();
String toDataURL(const String& mimeType, const double* quality = 0, CoordinateSystem = LogicalCoordinateSystem) const;
#if !USE(CG)
AffineTransform baseTransform() const { return AffineTransform(); }
void transformColorSpace(ColorSpace srcColorSpace, ColorSpace dstColorSpace);
void platformTransformColorSpace(const Vector<int>&);
#else
AffineTransform baseTransform() const { return AffineTransform(1, 0, 0, -1, 0, m_data.backingStoreSize.height()); }
#endif
PlatformLayer* platformLayer() const;
#if USE(CAIRO)
NativeImagePtr nativeImage() const;
#endif
// FIXME: current implementations of this method have the restriction that they only work
// with textures that are RGB or RGBA format, and UNSIGNED_BYTE type.
bool copyToPlatformTexture(GraphicsContext3D&, GC3Denum, Platform3DObject, GC3Denum, bool, bool);
// These functions are used when clamping the ImageBuffer which is created for filter, masker or clipper.
static bool sizeNeedsClamping(const FloatSize&);
static bool sizeNeedsClamping(const FloatSize&, FloatSize& scale);
static FloatSize clampedSize(const FloatSize&);
static FloatSize clampedSize(const FloatSize&, FloatSize& scale);
static FloatRect clampedRect(const FloatRect&);
private:
#if USE(CG)
// The returned image might be larger than the internalSize(). If you want the smaller
// image, crop the result.
RetainPtr<CGImageRef> copyNativeImage(BackingStoreCopy = CopyBackingStore) const;
static RetainPtr<CGImageRef> sinkIntoNativeImage(std::unique_ptr<ImageBuffer>);
void flushContext() const;
#endif
void draw(GraphicsContext&, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), CompositeOperator = CompositeSourceOver, BlendMode = BlendModeNormal);
void drawPattern(GraphicsContext&, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, const FloatRect& destRect, BlendMode = BlendModeNormal);
static void drawConsuming(std::unique_ptr<ImageBuffer>, GraphicsContext&, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), CompositeOperator = CompositeSourceOver, BlendMode = BlendModeNormal);
inline void genericConvertToLuminanceMask();
friend class GraphicsContext;
friend class GeneratedImage;
friend class CrossfadeGeneratedImage;
friend class NamedImageGeneratedImage;
friend class GradientImage;
private:
ImageBufferData m_data;
IntSize m_size;
IntSize m_logicalSize;
float m_resolutionScale;
// This constructor will place its success into the given out-variable
// so that create() knows when it should return failure.
WEBCORE_EXPORT ImageBuffer(const FloatSize&, float resolutionScale, ColorSpace, RenderingMode, bool& success);
#if PLATFORM(QT) && ENABLE(ACCELERATED_2D_CANVAS)
ImageBuffer(const IntSize&, float resolutionScale, ColorSpace, QOpenGLContext*, bool& success);
#endif
};
#if USE(CG)
String ImageDataToDataURL(const ImageData&, const String& mimeType, const double* quality);
#endif
} // namespace WebCore
#endif // ImageBuffer_h
|
