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comparison: gfx/skia/trunk/src/pdf/SkPDFImage.h
gfx/skia/trunk/src/pdf/SkPDFImage.h
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- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:7b90df7e7f77 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2010 The Android Open Source Project | |
| 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 SkPDFImage_DEFINED | |
| 11 #define SkPDFImage_DEFINED | |
| 12 | |
| 13 #include "SkPicture.h" | |
| 14 #include "SkPDFDevice.h" | |
| 15 #include "SkPDFStream.h" | |
| 16 #include "SkPDFTypes.h" | |
| 17 #include "SkRefCnt.h" | |
| 18 | |
| 19 class SkBitmap; | |
| 20 class SkPDFCatalog; | |
| 21 struct SkIRect; | |
| 22 | |
| 23 /** \class SkPDFImage | |
| 24 | |
| 25 An image XObject. | |
| 26 */ | |
| 27 | |
| 28 // We could play the same trick here as is done in SkPDFGraphicState, storing | |
| 29 // a copy of the Bitmap object (not the pixels), the pixel generation number, | |
| 30 // and settings used from the paint to canonicalize image objects. | |
| 31 class SkPDFImage : public SkPDFStream { | |
| 32 public: | |
| 33 /** Create a new Image XObject to represent the passed bitmap. | |
| 34 * @param bitmap The image to encode. | |
| 35 * @param srcRect The rectangle to cut out of bitmap. | |
| 36 * @param paint Used to calculate alpha, masks, etc. | |
| 37 * @return The image XObject or NUll if there is nothing to draw for | |
| 38 * the given parameters. | |
| 39 */ | |
| 40 static SkPDFImage* CreateImage(const SkBitmap& bitmap, | |
| 41 const SkIRect& srcRect, | |
| 42 SkPicture::EncodeBitmap encoder); | |
| 43 | |
| 44 virtual ~SkPDFImage(); | |
| 45 | |
| 46 /** Add a Soft Mask (alpha or shape channel) to the image. Refs mask. | |
| 47 * @param mask A gray scale image representing the mask. | |
| 48 * @return The mask argument is returned. | |
| 49 */ | |
| 50 SkPDFImage* addSMask(SkPDFImage* mask); | |
| 51 | |
| 52 bool isEmpty() { | |
| 53 return fSrcRect.isEmpty(); | |
| 54 } | |
| 55 | |
| 56 // The SkPDFObject interface. | |
| 57 virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects, | |
| 58 SkTSet<SkPDFObject*>* newResourceObjects); | |
| 59 | |
| 60 private: | |
| 61 SkBitmap fBitmap; | |
| 62 bool fIsAlpha; | |
| 63 SkIRect fSrcRect; | |
| 64 SkPicture::EncodeBitmap fEncoder; | |
| 65 bool fStreamValid; | |
| 66 | |
| 67 SkTDArray<SkPDFObject*> fResources; | |
| 68 | |
| 69 /** Create a PDF image XObject. Entries for the image properties are | |
| 70 * automatically added to the stream dictionary. | |
| 71 * @param stream The image stream. May be NULL. Otherwise, this | |
| 72 * (instead of the input bitmap) will be used as the | |
| 73 * PDF's content stream, possibly with lossless encoding. | |
| 74 * @param bitmap The image. If a stream is not given, its color data | |
| 75 * will be used as the image. If a stream is given, this | |
| 76 * is used for configuration only. | |
| 77 * @param isAlpha Whether or not this is the alpha of an image. | |
| 78 * @param srcRect The clipping applied to bitmap before generating | |
| 79 * imageData. | |
| 80 * @param encoder A function used to encode the bitmap for compression. | |
| 81 * May be NULL. | |
| 82 */ | |
| 83 SkPDFImage(SkStream* stream, const SkBitmap& bitmap, bool isAlpha, | |
| 84 const SkIRect& srcRect, SkPicture::EncodeBitmap encoder); | |
| 85 | |
| 86 /** Copy constructor, used to generate substitutes. | |
| 87 * @param image The SkPDFImage to copy. | |
| 88 */ | |
| 89 SkPDFImage(SkPDFImage& pdfImage); | |
| 90 | |
| 91 // Populate the stream dictionary. This method returns false if | |
| 92 // fSubstitute should be used. | |
| 93 virtual bool populate(SkPDFCatalog* catalog); | |
| 94 | |
| 95 typedef SkPDFStream INHERITED; | |
| 96 }; | |
| 97 | |
| 98 #endif |
