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comparison: gfx/skia/trunk/src/pdf/SkPDFStream.h
gfx/skia/trunk/src/pdf/SkPDFStream.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:a1bcda1e0825 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2010 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkPDFStream_DEFINED | |
| 11 #define SkPDFStream_DEFINED | |
| 12 | |
| 13 #include "SkPDFTypes.h" | |
| 14 #include "SkRefCnt.h" | |
| 15 #include "SkStream.h" | |
| 16 #include "SkTemplates.h" | |
| 17 | |
| 18 class SkPDFCatalog; | |
| 19 | |
| 20 /** \class SkPDFStream | |
| 21 | |
| 22 A stream object in a PDF. Note, all streams must be indirect objects (via | |
| 23 SkObjRef). | |
| 24 TODO(vandebo): SkStream should be replaced by SkStreamRewindable when that | |
| 25 is feasible. | |
| 26 */ | |
| 27 class SkPDFStream : public SkPDFDict { | |
| 28 SK_DECLARE_INST_COUNT(SkPDFStream) | |
| 29 public: | |
| 30 /** Create a PDF stream. A Length entry is automatically added to the | |
| 31 * stream dictionary. The stream may be retained (stream->ref() may be | |
| 32 * called) so its contents must not be changed after calling this. | |
| 33 * @param data The data part of the stream. | |
| 34 */ | |
| 35 explicit SkPDFStream(SkData* data); | |
| 36 /** Deprecated constructor. */ | |
| 37 explicit SkPDFStream(SkStream* stream); | |
| 38 /** Create a PDF stream with the same content and dictionary entries | |
| 39 * as the passed one. | |
| 40 */ | |
| 41 explicit SkPDFStream(const SkPDFStream& pdfStream); | |
| 42 virtual ~SkPDFStream(); | |
| 43 | |
| 44 // The SkPDFObject interface. | |
| 45 virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog, | |
| 46 bool indirect); | |
| 47 virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect); | |
| 48 | |
| 49 protected: | |
| 50 enum State { | |
| 51 kUnused_State, //!< The stream hasn't been requested yet. | |
| 52 kNoCompression_State, //!< The stream's been requested in an | |
| 53 // uncompressed form. | |
| 54 kCompressed_State, //!< The stream's already been compressed. | |
| 55 }; | |
| 56 | |
| 57 /* Create a PDF stream with no data. The setData method must be called to | |
| 58 * set the data. | |
| 59 */ | |
| 60 SkPDFStream(); | |
| 61 | |
| 62 // Populate the stream dictionary. This method returns false if | |
| 63 // fSubstitute should be used. | |
| 64 virtual bool populate(SkPDFCatalog* catalog); | |
| 65 | |
| 66 void setSubstitute(SkPDFStream* stream) { | |
| 67 fSubstitute.reset(stream); | |
| 68 } | |
| 69 | |
| 70 SkPDFStream* getSubstitute() { | |
| 71 return fSubstitute.get(); | |
| 72 } | |
| 73 | |
| 74 void setData(SkData* data); | |
| 75 void setData(SkStream* stream); | |
| 76 | |
| 77 SkStream* getData() { | |
| 78 return fData.get(); | |
| 79 } | |
| 80 | |
| 81 void setState(State state) { | |
| 82 fState = state; | |
| 83 } | |
| 84 | |
| 85 State getState() { | |
| 86 return fState; | |
| 87 } | |
| 88 | |
| 89 private: | |
| 90 // Indicates what form (or if) the stream has been requested. | |
| 91 State fState; | |
| 92 | |
| 93 // TODO(vandebo): Use SkData (after removing deprecated constructor). | |
| 94 SkAutoTUnref<SkStream> fData; | |
| 95 SkAutoTUnref<SkPDFStream> fSubstitute; | |
| 96 | |
| 97 typedef SkPDFDict INHERITED; | |
| 98 }; | |
| 99 | |
| 100 #endif |
