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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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74 virtual bool isBitmapImage() const { return false; } | 74 virtual bool isBitmapImage() const { return false; } |
75 | 75 |
76 // To increase accuracy of currentFrameKnownToBeOpaque() it may, | 76 // To increase accuracy of currentFrameKnownToBeOpaque() it may, |
77 // for applicable image types, be told to pre-cache metadata for | 77 // for applicable image types, be told to pre-cache metadata for |
78 // the current frame. Since this may initiate a deferred image | 78 // the current frame. Since this may initiate a deferred image |
79 // decoding, PreCacheMetadata requires a InspectorPaintImageEvent | 79 // decoding, PreCacheMetadata requires a InspectorPaintImageEvent |
80 // during call. | 80 // during call. |
81 enum MetadataMode { UseCurrentMetadata, PreCacheMetadata }; | 81 enum MetadataMode { UseCurrentMetadata, PreCacheMetadata }; |
82 virtual bool currentFrameKnownToBeOpaque(MetadataMode = UseCurrentMetadata)
= 0; | 82 virtual bool currentFrameKnownToBeOpaque(MetadataMode = UseCurrentMetadata)
= 0; |
83 | 83 |
84 virtual bool currentFrameIsComplete() { return false; } | 84 virtual bool currentFrameIsFullyReceived() { return false; } |
85 virtual bool currentFrameIsLazyDecoded() { return false; } | 85 virtual bool currentFrameIsLazyDecoded() { return false; } |
86 virtual bool isTextureBacked(); | 86 virtual bool isTextureBacked(); |
87 | 87 |
88 // Derived classes should override this if they can assure that the current | 88 // Derived classes should override this if they can assure that the current |
89 // image frame contains only resources from its own security origin. | 89 // image frame contains only resources from its own security origin. |
90 virtual bool currentFrameHasSingleSecurityOrigin() const { return false; } | 90 virtual bool currentFrameHasSingleSecurityOrigin() const { return false; } |
91 | 91 |
92 static Image* nullImage(); | 92 static Image* nullImage(); |
93 bool isNull() const { return size().isEmpty(); } | 93 bool isNull() const { return size().isEmpty(); } |
94 | 94 |
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181 UntracedMember<ImageObserver> m_imageObserver; | 181 UntracedMember<ImageObserver> m_imageObserver; |
182 bool m_imageObserverDisabled; | 182 bool m_imageObserverDisabled; |
183 }; | 183 }; |
184 | 184 |
185 #define DEFINE_IMAGE_TYPE_CASTS(typeName) \ | 185 #define DEFINE_IMAGE_TYPE_CASTS(typeName) \ |
186 DEFINE_TYPE_CASTS(typeName, Image, image, image->is##typeName(), image.is##t
ypeName()) | 186 DEFINE_TYPE_CASTS(typeName, Image, image, image->is##typeName(), image.is##t
ypeName()) |
187 | 187 |
188 } // namespace blink | 188 } // namespace blink |
189 | 189 |
190 #endif | 190 #endif |
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