halcanary | 1b5c604 | 2015-02-18 11:29:56 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 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 | #ifndef SkPDFBitmap_DEFINED |
| 8 | #define SkPDFBitmap_DEFINED |
| 9 | |
| 10 | #include "SkPDFTypes.h" |
| 11 | #include "SkBitmap.h" |
| 12 | |
| 13 | /** |
| 14 | * SkPDFBitmap wraps a SkBitmap and serializes it as an image Xobject. |
| 15 | * It is designed to use a minimal amout of memory, aside from refing |
| 16 | * the bitmap's pixels, and its emitObject() does not cache any data. |
| 17 | * |
| 18 | * As of now, it only supports 8888 bitmaps (the most common case). |
| 19 | * |
| 20 | * The SkPDFBitmap::Create function will check the canon for duplicates. |
| 21 | */ |
| 22 | class SkPDFBitmap : public SkPDFObject { |
| 23 | public: |
| 24 | // Returns NULL on unsupported bitmap; |
| 25 | // TODO(halcanary): support other bitmap colortypes and replace |
| 26 | // SkPDFImage. |
| 27 | static SkPDFBitmap* Create(const SkBitmap&, const SkIRect& subset); |
| 28 | ~SkPDFBitmap(); |
| 29 | void emitObject(SkWStream*, SkPDFCatalog*) SK_OVERRIDE; |
| 30 | void addResources(SkTSet<SkPDFObject*>* resourceSet, |
| 31 | SkPDFCatalog* catalog) const SK_OVERRIDE; |
| 32 | bool equals(const SkBitmap& other) const { |
| 33 | return fBitmap.getGenerationID() == other.getGenerationID() && |
| 34 | fBitmap.pixelRefOrigin() == other.pixelRefOrigin() && |
| 35 | fBitmap.dimensions() == other.dimensions(); |
| 36 | } |
| 37 | |
| 38 | private: |
| 39 | const SkBitmap fBitmap; |
| 40 | const SkAutoTUnref<SkPDFObject> fSMask; |
| 41 | SkPDFBitmap(const SkBitmap&, SkPDFObject*); |
| 42 | void emitDict(SkWStream*, SkPDFCatalog*, size_t, bool) const; |
| 43 | }; |
| 44 | |
| 45 | #endif // SkPDFBitmap_DEFINED |