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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 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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111 } | 111 } |
112 | 112 |
113 virtual String filenameExtension() const { | 113 virtual String filenameExtension() const { |
114 return String(); | 114 return String(); |
115 } // null string if unknown | 115 } // null string if unknown |
116 | 116 |
117 virtual void destroyDecodedData() = 0; | 117 virtual void destroyDecodedData() = 0; |
118 | 118 |
119 virtual PassRefPtr<SharedBuffer> data() { return m_encodedImageData; } | 119 virtual PassRefPtr<SharedBuffer> data() { return m_encodedImageData; } |
120 | 120 |
121 // Animation begins whenever someone draws the image, so startAnimation() is n
ot normally called. | 121 // Animation begins whenever someone draws the image, so startAnimation() is |
122 // It will automatically pause once all observers no longer want to render the
image anywhere. | 122 // not normally called. It will automatically pause once all observers no |
| 123 // longer want to render the image anywhere. |
123 enum CatchUpAnimation { DoNotCatchUp, CatchUp }; | 124 enum CatchUpAnimation { DoNotCatchUp, CatchUp }; |
124 virtual void startAnimation(CatchUpAnimation = CatchUp) {} | 125 virtual void startAnimation(CatchUpAnimation = CatchUp) {} |
125 virtual void resetAnimation() {} | 126 virtual void resetAnimation() {} |
126 | 127 |
127 // True if this image can potentially animate. | 128 // True if this image can potentially animate. |
128 virtual bool maybeAnimated() { return false; } | 129 virtual bool maybeAnimated() { return false; } |
129 | 130 |
130 // Set animationPolicy | 131 // Set animationPolicy |
131 virtual void setAnimationPolicy(ImageAnimationPolicy) {} | 132 virtual void setAnimationPolicy(ImageAnimationPolicy) {} |
132 virtual ImageAnimationPolicy animationPolicy() { | 133 virtual ImageAnimationPolicy animationPolicy() { |
133 return ImageAnimationPolicyAllowed; | 134 return ImageAnimationPolicyAllowed; |
134 } | 135 } |
135 virtual void advanceTime(double deltaTimeInSeconds) {} | 136 virtual void advanceTime(double deltaTimeInSeconds) {} |
136 | 137 |
137 // Advances an animated image. For BitmapImage (e.g., animated gifs) this | 138 // Advances an animated image. For BitmapImage (e.g., animated gifs) this |
138 // will advance to the next frame. For SVGImage, this will trigger an | 139 // will advance to the next frame. For SVGImage, this will trigger an |
139 // animation update for CSS and advance the SMIL timeline by one frame. | 140 // animation update for CSS and advance the SMIL timeline by one frame. |
140 virtual void advanceAnimationForTesting() {} | 141 virtual void advanceAnimationForTesting() {} |
141 | 142 |
142 // Typically the ImageResource that owns us. | 143 // Typically the ImageResource that owns us. |
143 ImageObserver* getImageObserver() const { | 144 ImageObserver* getImageObserver() const { |
144 return m_imageObserverDisabled ? nullptr : m_imageObserver; | 145 return m_imageObserverDisabled ? nullptr : m_imageObserver; |
145 } | 146 } |
146 void clearImageObserver() { m_imageObserver = nullptr; } | 147 void clearImageObserver() { m_imageObserver = nullptr; } |
147 // Do not call setImageObserverDisabled() other than from ImageObserverDisable
r to avoid interleaved accesses to |m_imageObserverDisabled|. | 148 // To avoid interleaved accesses to |m_imageObserverDisabled|, do not call |
| 149 // setImageObserverDisabled() other than from ImageObserverDisabler. |
148 void setImageObserverDisabled(bool disabled) { | 150 void setImageObserverDisabled(bool disabled) { |
149 m_imageObserverDisabled = disabled; | 151 m_imageObserverDisabled = disabled; |
150 } | 152 } |
151 | 153 |
152 enum TileRule { StretchTile, RoundTile, SpaceTile, RepeatTile }; | 154 enum TileRule { StretchTile, RoundTile, SpaceTile, RepeatTile }; |
153 | 155 |
154 virtual sk_sp<SkImage> imageForCurrentFrame() = 0; | 156 virtual sk_sp<SkImage> imageForCurrentFrame() = 0; |
155 virtual PassRefPtr<Image> imageForDefaultFrame(); | 157 virtual PassRefPtr<Image> imageForDefaultFrame(); |
156 | 158 |
157 virtual void drawPattern(GraphicsContext&, | 159 virtual void drawPattern(GraphicsContext&, |
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169 | 171 |
170 virtual void draw(SkCanvas*, | 172 virtual void draw(SkCanvas*, |
171 const SkPaint&, | 173 const SkPaint&, |
172 const FloatRect& dstRect, | 174 const FloatRect& dstRect, |
173 const FloatRect& srcRect, | 175 const FloatRect& srcRect, |
174 RespectImageOrientationEnum, | 176 RespectImageOrientationEnum, |
175 ImageClampingMode) = 0; | 177 ImageClampingMode) = 0; |
176 | 178 |
177 virtual bool applyShader(SkPaint&, const SkMatrix& localMatrix); | 179 virtual bool applyShader(SkPaint&, const SkMatrix& localMatrix); |
178 | 180 |
179 // Compute the tile which contains a given point (assuming a repeating tile gr
id). | 181 // Compute the tile which contains a given point (assuming a repeating tile |
180 // The point and returned value are in destination grid space. | 182 // grid). The point and returned value are in destination grid space. |
181 static FloatRect computeTileContaining(const FloatPoint&, | 183 static FloatRect computeTileContaining(const FloatPoint&, |
182 const FloatSize& tileSize, | 184 const FloatSize& tileSize, |
183 const FloatPoint& tilePhase, | 185 const FloatPoint& tilePhase, |
184 const FloatSize& tileSpacing); | 186 const FloatSize& tileSpacing); |
185 | 187 |
186 // Compute the image subset which gets mapped onto dest, when the whole image
is drawn into | 188 // Compute the image subset which gets mapped onto |dest|, when the whole |
187 // tile. Assumes the tile contains dest. The tile rect is in destination gri
d space while | 189 // image is drawn into |tile|. Assumes |tile| contains |dest|. The tile rect |
188 // the return value is in image coordinate space. | 190 // is in destination grid space while the return value is in image coordinate |
| 191 // space. |
189 static FloatRect computeSubsetForTile(const FloatRect& tile, | 192 static FloatRect computeSubsetForTile(const FloatRect& tile, |
190 const FloatRect& dest, | 193 const FloatRect& dest, |
191 const FloatSize& imageSize); | 194 const FloatSize& imageSize); |
192 | 195 |
193 protected: | 196 protected: |
194 Image(ImageObserver* = 0); | 197 Image(ImageObserver* = 0); |
195 | 198 |
196 void drawTiled(GraphicsContext&, | 199 void drawTiled(GraphicsContext&, |
197 const FloatRect& dstRect, | 200 const FloatRect& dstRect, |
198 const FloatPoint& srcPoint, | 201 const FloatPoint& srcPoint, |
199 const FloatSize& tileSize, | 202 const FloatSize& tileSize, |
200 SkXfermode::Mode, | 203 SkXfermode::Mode, |
201 const FloatSize& repeatSpacing); | 204 const FloatSize& repeatSpacing); |
202 void drawTiled(GraphicsContext&, | 205 void drawTiled(GraphicsContext&, |
203 const FloatRect& dstRect, | 206 const FloatRect& dstRect, |
204 const FloatRect& srcRect, | 207 const FloatRect& srcRect, |
205 const FloatSize& tileScaleFactor, | 208 const FloatSize& tileScaleFactor, |
206 TileRule hRule, | 209 TileRule hRule, |
207 TileRule vRule, | 210 TileRule vRule, |
208 SkXfermode::Mode); | 211 SkXfermode::Mode); |
209 | 212 |
210 private: | 213 private: |
211 RefPtr<SharedBuffer> m_encodedImageData; | 214 RefPtr<SharedBuffer> m_encodedImageData; |
212 // TODO(Oilpan): consider having Image on the Oilpan heap and | 215 // TODO(Oilpan): consider having Image on the Oilpan heap and |
213 // turn this into a Member<>. | 216 // turn this into a Member<>. |
214 // | 217 // |
215 // The observer (an ImageResource) is an untraced member, with the ImageResour
ce | 218 // The observer (an ImageResource) is an untraced member, with the |
216 // being responsible of clearing itself out. | 219 // ImageResource being responsible for clearing itself out. |
217 UntracedMember<ImageObserver> m_imageObserver; | 220 UntracedMember<ImageObserver> m_imageObserver; |
218 bool m_imageObserverDisabled; | 221 bool m_imageObserverDisabled; |
219 }; | 222 }; |
220 | 223 |
221 #define DEFINE_IMAGE_TYPE_CASTS(typeName) \ | 224 #define DEFINE_IMAGE_TYPE_CASTS(typeName) \ |
222 DEFINE_TYPE_CASTS(typeName, Image, image, image->is##typeName(), \ | 225 DEFINE_TYPE_CASTS(typeName, Image, image, image->is##typeName(), \ |
223 image.is##typeName()) | 226 image.is##typeName()) |
224 | 227 |
225 } // namespace blink | 228 } // namespace blink |
226 | 229 |
227 #endif | 230 #endif |
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