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| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkPDFImageStream_DEFINED | |
| 9 #define SkPDFImageStream_DEFINED | |
| 10 | |
| 11 #include "SkBitmap.h" | |
| 12 #include "SkPDFDevice.h" | |
| 13 #include "SkPDFStream.h" | |
| 14 #include "SkPDFTypes.h" | |
| 15 #include "SkRect.h" | |
| 16 #include "SkRefCnt.h" | |
| 17 #include "SkStream.h" | |
| 18 #include "SkTemplates.h" | |
| 19 | |
| 20 class SkPDFCatalog; | |
| 21 | |
| 22 /** \class SkPDFImageStream | |
| 23 | |
| 24 An image stream object in a PDF. Note, all streams must be indirect objects | |
| 25 (via SkObjRef). | |
| 26 This class is similar to SkPDFStream, but it is also able to use image | |
| 27 specific compression. Currently we support DCT(jpeg) and flate(zip). | |
| 28 */ | |
| 29 class SkPDFImageStream : public SkPDFStream { | |
| 30 public: | |
| 31 /** Create a PDF stream with the same content and dictionary entries | |
| 32 * as the passed one. | |
| 33 */ | |
| 34 explicit SkPDFImageStream(const SkPDFImageStream& pdfStream); | |
| 35 virtual ~SkPDFImageStream(); | |
| 36 | |
| 37 protected: | |
| 38 SkPDFImageStream(SkStream* stream, const SkBitmap& bitmap, | |
| 39 const SkIRect& srcRect, EncodeToDCTStream encoder); | |
| 40 | |
| 41 // Populate the stream dictionary. This method returns false if | |
| 42 // fSubstitute should be used. | |
| 43 virtual bool populate(SkPDFCatalog* catalog); | |
| 44 | |
| 45 private: | |
| 46 const SkBitmap fBitmap; | |
| 47 const SkIRect fSrcRect; | |
| 48 EncodeToDCTStream fEncoder; | |
| 49 | |
| 50 typedef SkPDFStream INHERITED; | |
| 51 }; | |
| 52 | |
| 53 #endif | |
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