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1 /* | 1 /* |
2 * Copyright (c) 2008, 2009, Google Inc. All rights reserved. | 2 * Copyright (c) 2008, 2009, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * 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 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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32 #define ICOImageDecoder_h | 32 #define ICOImageDecoder_h |
33 | 33 |
34 #include "platform/image-decoders/FastSharedBufferReader.h" | 34 #include "platform/image-decoders/FastSharedBufferReader.h" |
35 #include "platform/image-decoders/bmp/BMPImageReader.h" | 35 #include "platform/image-decoders/bmp/BMPImageReader.h" |
36 | 36 |
37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 class PNGImageDecoder; | 39 class PNGImageDecoder; |
40 | 40 |
41 // This class decodes the ICO and CUR image formats. | 41 // This class decodes the ICO and CUR image formats. |
42 class PLATFORM_EXPORT ICOImageDecoder : public ImageDecoder { | 42 class PLATFORM_EXPORT ICOImageDecoder final : public ImageDecoder { |
43 public: | 43 public: |
44 ICOImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy
tes); | 44 ICOImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy
tes); |
45 ~ICOImageDecoder() override; | 45 ~ICOImageDecoder() override; |
46 | 46 |
47 // ImageDecoder: | 47 // ImageDecoder: |
48 String filenameExtension() const override { return "ico"; } | 48 String filenameExtension() const override { return "ico"; } |
49 void onSetData(SharedBuffer*) override; | 49 void onSetData(SharedBuffer*) override; |
50 IntSize size() const override; | 50 IntSize size() const override; |
51 IntSize frameSizeAtIndex(size_t) const override; | 51 IntSize frameSizeAtIndex(size_t) const override; |
52 bool setSize(unsigned width, unsigned height) override; | 52 bool setSize(unsigned width, unsigned height) override; |
53 // CAUTION: setFailed() deletes all readers and decoders. Be careful to | 53 // CAUTION: setFailed() deletes all readers and decoders. Be careful to |
54 // avoid accessing deleted memory, especially when calling this from | 54 // avoid accessing deleted memory, especially when calling this from |
55 // inside BMPImageReader! | 55 // inside BMPImageReader! |
56 bool setFailed() override; | 56 bool setFailed() override; |
57 bool hotSpot(IntPoint&) const override; | 57 bool hotSpot(IntPoint&) const override; |
58 | 58 |
59 private: | 59 private: |
60 enum ImageType { | 60 enum ImageType { |
61 Unknown, | 61 Unknown, |
62 BMP, | 62 BMP, |
63 PNG, | 63 PNG, |
64 }; | 64 }; |
65 | 65 |
66 enum FileType { | 66 enum FileType { |
67 ICON = 1, | 67 ICON = 1, |
68 CURSOR = 2, | 68 CURSOR = 2, |
69 }; | 69 }; |
70 | 70 |
71 struct IconDirectoryEntry { | 71 struct IconDirectoryEntry { |
| 72 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
72 IntSize m_size; | 73 IntSize m_size; |
73 uint16_t m_bitCount; | 74 uint16_t m_bitCount; |
74 IntPoint m_hotSpot; | 75 IntPoint m_hotSpot; |
75 uint32_t m_imageOffset; | 76 uint32_t m_imageOffset; |
76 }; | 77 }; |
77 | 78 |
78 // Returns true if |a| is a preferable icon entry to |b|. | 79 // Returns true if |a| is a preferable icon entry to |b|. |
79 // Larger sizes, or greater bitdepths at the same size, are preferable. | 80 // Larger sizes, or greater bitdepths at the same size, are preferable. |
80 static bool compareEntries(const IconDirectoryEntry& a, const IconDirectoryE
ntry& b); | 81 static bool compareEntries(const IconDirectoryEntry& a, const IconDirectoryE
ntry& b); |
81 | 82 |
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162 PNGDecoders m_pngDecoders; | 163 PNGDecoders m_pngDecoders; |
163 | 164 |
164 // Valid only while a BMPImageReader is decoding, this holds the size | 165 // Valid only while a BMPImageReader is decoding, this holds the size |
165 // for the particular entry being decoded. | 166 // for the particular entry being decoded. |
166 IntSize m_frameSize; | 167 IntSize m_frameSize; |
167 }; | 168 }; |
168 | 169 |
169 } // namespace blink | 170 } // namespace blink |
170 | 171 |
171 #endif | 172 #endif |
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