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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2004, 2005, 2006 Apple Computer, 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:
* 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 COMPUTER, 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 COMPUTER, 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 BitmapImage_h
#define BitmapImage_h
#include "Image.h"
#include "Color.h"
#include "IntSize.h"
#if PLATFORM(MAC)
#include <wtf/RetainPtr.h>
#ifdef __OBJC__
@class NSImage;
#else
class NSImage;
#endif
#endif
#if PLATFORM(WIN)
class NativeImageSkia;
typedef struct HBITMAP__ *HBITMAP;
#endif
namespace WebCore {
struct FrameData;
}
// This complicated-looking declaration tells the FrameData Vector that it should copy without
// invoking our constructor or destructor. This allows us to have a vector even for a struct
// that's not copyable.
namespace WTF {
template<> class VectorTraits<WebCore::FrameData> : public SimpleClassVectorTraits {};
}
namespace WebCore {
template <typename T> class Timer;
// ================================================
// FrameData Class
// ================================================
struct FrameData : Noncopyable {
FrameData()
: m_frame(0)
, m_duration(0)
, m_hasAlpha(true)
{
}
~FrameData()
{
clear();
}
void clear();
NativeImagePtr m_frame;
float m_duration;
bool m_hasAlpha;
};
// =================================================
// BitmapImage Class
// =================================================
class BitmapImage : public Image {
friend class GraphicsContext;
public:
#if PLATFORM(QT)
BitmapImage(const QPixmap &pixmap, ImageObserver* = 0);
#endif
BitmapImage(ImageObserver* = 0);
~BitmapImage();
virtual IntSize size() const;
virtual bool dataChanged(bool allDataReceived);
// It may look unusual that there is no start animation call as public API. This is because
// we start and stop animating lazily. Animation begins whenever someone draws the image. It will
// automatically pause once all observers no longer want to render the image anywhere.
virtual void stopAnimation();
virtual void resetAnimation();
virtual unsigned decodedSize() const { return m_decodedSize; }
#if PLATFORM(MAC)
// Accessors for native image formats.
virtual NSImage* getNSImage();
virtual CFDataRef getTIFFRepresentation();
#endif
#if PLATFORM(CG)
virtual CGImageRef getCGImageRef();
#endif
#if PLATFORM(QT)
virtual QPixmap* getPixmap() const;
#endif
#if PLATFORM(WIN)
virtual bool getHBITMAP(HBITMAP);
virtual bool getHBITMAPOfSize(HBITMAP, LPSIZE);
virtual NativeImageSkia* getBitmap();
#endif
#if PLATFORM(WX)
virtual wxBitmap* getWxBitmap() const;
#endif
virtual NativeImagePtr nativeImageForCurrentFrame() { return frameAtIndex(currentFrame()); }
private:
#if PLATFORM(WIN)
virtual void drawFrameMatchingSourceSize(GraphicsContext*, const FloatRect& dstRect, const IntSize& srcSize, CompositeOperator);
#endif
virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator);
#if PLATFORM(QT) || PLATFORM(WX)
virtual void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform,
const FloatPoint& phase, CompositeOperator, const FloatRect& destRect);
#endif
size_t currentFrame() const { return m_currentFrame; }
size_t frameCount();
NativeImagePtr frameAtIndex(size_t);
float frameDurationAtIndex(size_t);
bool frameHasAlphaAtIndex(size_t);
// Decodes and caches a frame. Never accessed except internally.
void cacheFrame(size_t index);
// Called to invalidate all our cached data. If an image is loading incrementally, we only
// invalidate the last cached frame.
virtual void destroyDecodedData(bool incremental = false);
// Whether or not size is available yet.
bool isSizeAvailable();
// Animation.
bool shouldAnimate();
virtual void startAnimation();
void advanceAnimation(Timer<BitmapImage>*);
// Handle platform-specific data
void initPlatformData();
void invalidatePlatformData();
// Checks to see if the image is a 1x1 solid color. We optimize these images and just do a fill rect instead.
void checkForSolidColor();
virtual bool mayFillWithSolidColor() const { return m_isSolidColor && m_currentFrame == 0; }
virtual Color solidColor() const { return m_solidColor; }
ImageSource m_source;
mutable IntSize m_size; // The size to use for the overall image (will just be the size of the first image).
size_t m_currentFrame; // The index of the current frame of animation.
Vector<FrameData> m_frames; // An array of the cached frames of the animation. We have to ref frames to pin them in the cache.
Timer<BitmapImage>* m_frameTimer;
int m_repetitionCount; // How many total animation loops we should do.
int m_repetitionsComplete; // How many repetitions we've finished.
#if PLATFORM(MAC)
mutable RetainPtr<NSImage> m_nsImage; // A cached NSImage of frame 0. Only built lazily if someone actually queries for one.
mutable RetainPtr<CFDataRef> m_tiffRep; // Cached TIFF rep for frame 0. Only built lazily if someone queries for one.
#endif
Color m_solidColor; // If we're a 1x1 solid color, this is the color to use to fill.
bool m_isSolidColor; // Whether or not we are a 1x1 solid image.
bool m_animatingImageType; // Whether or not we're an image type that is capable of animating (GIF).
bool m_animationFinished; // Whether or not we've completed the entire animation.
bool m_allDataReceived; // Whether or not we've received all our data.
mutable bool m_haveSize; // Whether or not our |m_size| member variable has the final overall image size yet.
bool m_sizeAvailable; // Whether or not we can obtain the size of the first image frame yet from ImageIO.
unsigned m_decodedSize; // The current size of all decoded frames.
#if PLATFORM(QT)
QPixmap *m_pixmap;
#endif
};
}
#endif
|
