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| 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 SkData; | |
| 21 class SkPDFCatalog; | |
| 22 struct SkIRect; | |
| 23 | |
| 24 /** | |
| 25 * Return the mose efficient availible encoding of the given bitmap. | |
| 26 */ | |
| 27 SkPDFObject* SkPDFCreateImageObject(SkPDFCanon* canon, | |
| 28 const SkBitmap&, | |
| 29 const SkIRect& subset); | |
| 30 | |
| 31 /** \class SkPDFImage | |
| 32 | |
| 33 An image XObject. | |
| 34 */ | |
| 35 | |
| 36 // We could play the same trick here as is done in SkPDFGraphicState, storing | |
| 37 // a copy of the Bitmap object (not the pixels), the pixel generation number, | |
| 38 // and settings used from the paint to canonicalize image objects. | |
| 39 class SkPDFImage : public SkPDFStream { | |
| 40 public: | |
| 41 /** Create a new Image XObject to represent the passed bitmap. | |
| 42 * @param bitmap The image to encode. | |
| 43 * @param srcRect The rectangle to cut out of bitmap. | |
| 44 * @param paint Used to calculate alpha, masks, etc. | |
| 45 * @return The image XObject or NUll if there is nothing to draw for | |
| 46 * the given parameters. | |
| 47 */ | |
| 48 static SkPDFImage* CreateImage(const SkBitmap& bitmap, | |
| 49 const SkIRect& srcRect); | |
| 50 | |
| 51 virtual ~SkPDFImage(); | |
| 52 | |
| 53 bool isEmpty() { | |
| 54 return fSrcRect.isEmpty(); | |
| 55 } | |
| 56 | |
| 57 private: | |
| 58 SkBitmap fBitmap; | |
| 59 bool fIsAlpha; | |
| 60 SkIRect fSrcRect; | |
| 61 bool fStreamValid; | |
| 62 | |
| 63 /** Create a PDF image XObject. Entries for the image properties are | |
| 64 * automatically added to the stream dictionary. | |
| 65 * @param stream The image stream. May be NULL. Otherwise, this | |
| 66 * (instead of the input bitmap) will be used as the | |
| 67 * PDF's content stream, possibly with lossless encoding. | |
| 68 * Will be duplicated, and left in indeterminate state. | |
| 69 * @param bitmap The image. If a stream is not given, its color data | |
| 70 * will be used as the image. If a stream is given, this | |
| 71 * is used for configuration only. | |
| 72 * @param isAlpha Whether or not this is the alpha of an image. | |
| 73 * @param srcRect The clipping applied to bitmap before generating | |
| 74 * imageData. | |
| 75 */ | |
| 76 SkPDFImage(SkStream* stream, const SkBitmap& bitmap, bool isAlpha, | |
| 77 const SkIRect& srcRect); | |
| 78 | |
| 79 /** Copy constructor, used to generate substitutes. | |
| 80 * @param image The SkPDFImage to copy. | |
| 81 */ | |
| 82 SkPDFImage(SkPDFImage& pdfImage); | |
| 83 | |
| 84 // Populate the stream dictionary. This method returns false if | |
| 85 // fSubstitute should be used. | |
| 86 virtual bool populate(SkPDFCatalog* catalog); | |
| 87 | |
| 88 typedef SkPDFStream INHERITED; | |
| 89 }; | |
| 90 | |
| 91 #endif | |
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Chromium Code Reviews
Issue 950633003:
PDF: remove last use of SkPDFImage (Closed)
Base URL: https://skia.googlesource.com/skia.git@master