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1 /* | 1 /* |
2 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | 2 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
3 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. | 3 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. |
4 * Copyright (C) 2008-2009 Torch Mobile, Inc. | 4 * Copyright (C) 2008-2009 Torch Mobile, Inc. |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
8 * are met: | 8 * are met: |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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94 // Construct a BitmapImage with the given orientation. | 94 // Construct a BitmapImage with the given orientation. |
95 static PassRefPtr<BitmapImage> createWithOrientationForTesting( | 95 static PassRefPtr<BitmapImage> createWithOrientationForTesting( |
96 const SkBitmap&, | 96 const SkBitmap&, |
97 ImageOrientation); | 97 ImageOrientation); |
98 // Advance the image animation by one frame. | 98 // Advance the image animation by one frame. |
99 void advanceAnimationForTesting() override { internalAdvanceAnimation(); } | 99 void advanceAnimationForTesting() override { internalAdvanceAnimation(); } |
100 | 100 |
101 private: | 101 private: |
102 enum RepetitionCountStatus { | 102 enum RepetitionCountStatus { |
103 Unknown, // We haven't checked the source's repetition count. | 103 Unknown, // We haven't checked the source's repetition count. |
104 Uncertain, // We have a repetition count, but it might be wrong (some GIFs
have a count after the image data, and will report "loop once" until all data ha
s been decoded). | 104 Uncertain, // We have a repetition count, but it might be wrong (some GIFs |
| 105 // have a count after the image data, and will report "loop |
| 106 // once" until all data has been decoded). |
105 Certain // The repetition count is known to be correct. | 107 Certain // The repetition count is known to be correct. |
106 }; | 108 }; |
107 | 109 |
108 BitmapImage(const SkBitmap&, ImageObserver* = 0); | 110 BitmapImage(const SkBitmap&, ImageObserver* = 0); |
109 BitmapImage(ImageObserver* = 0); | 111 BitmapImage(ImageObserver* = 0); |
110 | 112 |
111 void draw(SkCanvas*, | 113 void draw(SkCanvas*, |
112 const SkPaint&, | 114 const SkPaint&, |
113 const FloatRect& dstRect, | 115 const FloatRect& dstRect, |
114 const FloatRect& srcRect, | 116 const FloatRect& srcRect, |
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142 // Notifies observers that the memory footprint has changed. | 144 // Notifies observers that the memory footprint has changed. |
143 void notifyMemoryChanged(); | 145 void notifyMemoryChanged(); |
144 | 146 |
145 // Whether or not size is available yet. | 147 // Whether or not size is available yet. |
146 bool isSizeAvailable(); | 148 bool isSizeAvailable(); |
147 | 149 |
148 // Animation. | 150 // Animation. |
149 // We start and stop animating lazily. Animation starts when the image is | 151 // We start and stop animating lazily. Animation starts when the image is |
150 // rendered, and automatically stops once no observer wants to render the | 152 // rendered, and automatically stops once no observer wants to render the |
151 // image. | 153 // image. |
152 int repetitionCount( | 154 |
153 bool | 155 // |imageKnownToBeComplete| should be set if the caller knows the entire image |
154 imageKnownToBeComplete); // |imageKnownToBeComplete| should be set if
the caller knows the entire image has been decoded. | 156 // has been decoded. |
| 157 int repetitionCount(bool imageKnownToBeComplete); |
| 158 |
155 bool shouldAnimate(); | 159 bool shouldAnimate(); |
156 void startAnimation(CatchUpAnimation = CatchUp) override; | 160 void startAnimation(CatchUpAnimation = CatchUp) override; |
157 void stopAnimation(); | 161 void stopAnimation(); |
158 void advanceAnimation(TimerBase*); | 162 void advanceAnimation(TimerBase*); |
| 163 |
159 // Advance the animation and let the next frame get scheduled without | 164 // Advance the animation and let the next frame get scheduled without |
160 // catch-up logic. For large images with slow or heavily-loaded systems, | 165 // catch-up logic. For large images with slow or heavily-loaded systems, |
161 // throwing away data as we go (see destroyDecodedData()) means we can spend | 166 // throwing away data as we go (see destroyDecodedData()) means we can spend |
162 // so much time re-decoding data that we are always behind. To prevent this, | 167 // so much time re-decoding data that we are always behind. To prevent this, |
163 // we force the next animation to skip the catch up logic. | 168 // we force the next animation to skip the catch up logic. |
164 void advanceAnimationWithoutCatchUp(TimerBase*); | 169 void advanceAnimationWithoutCatchUp(TimerBase*); |
165 | 170 |
166 // This function does the real work of advancing the animation. When | 171 // This function does the real work of advancing the animation. When |
167 // skipping frames to catch up, we're in the middle of a loop trying to skip | 172 // skipping frames to catch up, we're in the middle of a loop trying to skip |
168 // over a bunch of animation frames, so we should not do things like decode | 173 // over a bunch of animation frames, so we should not do things like decode |
169 // each one or notify our observers. | 174 // each one or notify our observers. |
170 // Returns whether the animation was advanced. | 175 // Returns whether the animation was advanced. |
171 enum AnimationAdvancement { Normal, SkipFramesToCatchUp }; | 176 enum AnimationAdvancement { Normal, SkipFramesToCatchUp }; |
172 bool internalAdvanceAnimation(AnimationAdvancement = Normal); | 177 bool internalAdvanceAnimation(AnimationAdvancement = Normal); |
173 | 178 |
174 void notifyObserversOfAnimationAdvance(TimerBase*); | 179 void notifyObserversOfAnimationAdvance(TimerBase*); |
175 | 180 |
176 ImageSource m_source; | 181 ImageSource m_source; |
177 mutable IntSize | 182 mutable IntSize m_size; // The size to use for the overall image (will just |
178 m_size; // The size to use for the overall image (will just be the size o
f the first image). | 183 // be the size of the first image). |
179 mutable IntSize m_sizeRespectingOrientation; | 184 mutable IntSize m_sizeRespectingOrientation; |
180 | 185 |
181 size_t m_currentFrame; // The index of the current frame of animation. | 186 size_t m_currentFrame; // The index of the current frame of animation. |
182 Vector<FrameData, 1> | 187 Vector<FrameData, 1> m_frames; // An array of the cached frames of the |
183 m_frames; // An array of the cached frames of the animation. We have to r
ef frames to pin them in the cache. | 188 // animation. We have to ref frames to pin |
| 189 // them in the cache. |
184 | 190 |
185 sk_sp<SkImage> | 191 sk_sp<SkImage> |
186 m_cachedFrame; // A cached copy of the most recently-accessed frame. | 192 m_cachedFrame; // A cached copy of the most recently-accessed frame. |
187 size_t m_cachedFrameIndex; // Index of the frame that is cached. | 193 size_t m_cachedFrameIndex; // Index of the frame that is cached. |
188 | 194 |
189 std::unique_ptr<Timer<BitmapImage>> m_frameTimer; | 195 std::unique_ptr<Timer<BitmapImage>> m_frameTimer; |
190 int m_repetitionCount; // How many total animation loops we should do. This
will be cAnimationNone if this image type is incapable of animation. | 196 int m_repetitionCount; // How many total animation loops we should do. This |
| 197 // will be cAnimationNone if this image type is |
| 198 // incapable of animation. |
191 RepetitionCountStatus m_repetitionCountStatus; | 199 RepetitionCountStatus m_repetitionCountStatus; |
192 int m_repetitionsComplete; // How many repetitions we've finished. | 200 int m_repetitionsComplete; // How many repetitions we've finished. |
193 double | 201 double m_desiredFrameStartTime; // The system time at which we hope to see |
194 m_desiredFrameStartTime; // The system time at which we hope to see the n
ext call to startAnimation(). | 202 // the next call to startAnimation(). |
195 | 203 |
196 size_t m_frameCount; | 204 size_t m_frameCount; |
197 | 205 |
198 ImageAnimationPolicy | 206 ImageAnimationPolicy |
199 m_animationPolicy; // Whether or not we can play animation. | 207 m_animationPolicy; // Whether or not we can play animation. |
200 | 208 |
201 bool | 209 bool m_animationFinished : 1; // Whether we've completed the entire |
202 m_animationFinished : 1; // Whether or not we've completed the entire ani
mation. | 210 // animation. |
203 | 211 |
204 bool m_allDataReceived : 1; // Whether or not we've received all our data. | 212 bool m_allDataReceived : 1; // Whether we've received all our data. |
205 mutable bool | 213 mutable bool m_haveSize : 1; // Whether our |m_size| member variable has the |
206 m_haveSize : 1; // Whether or not our |m_size| member variable has the fi
nal overall image size yet. | 214 // final overall image size yet. |
207 bool | 215 bool m_sizeAvailable : 1; // Whether we can obtain the size of the first |
208 m_sizeAvailable : 1; // Whether or not we can obtain the size of the firs
t image frame yet from ImageIO. | 216 // image frame from ImageIO yet. |
209 mutable bool m_haveFrameCount : 1; | 217 mutable bool m_haveFrameCount : 1; |
210 }; | 218 }; |
211 | 219 |
212 DEFINE_IMAGE_TYPE_CASTS(BitmapImage); | 220 DEFINE_IMAGE_TYPE_CASTS(BitmapImage); |
213 | 221 |
214 } // namespace blink | 222 } // namespace blink |
215 | 223 |
216 #endif | 224 #endif |
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