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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 class SkPDFCanon;
14 
15 /**
16  * SkPDFBitmap wraps a SkBitmap and serializes it as an image Xobject.
17  * It is designed to use a minimal amout of memory, aside from refing
18  * the bitmap's pixels, and its emitObject() does not cache any data.
19  *
20  * If !bitmap.isImmutable(), then a copy of the bitmap must be made;
21  * there is no way around this.
22  *
23  * The SkPDFBitmap::Create function will check the canon for duplicates.
24  */
25 class SkPDFBitmap : public SkPDFObject {
26 public:
27     // Returns NULL on unsupported bitmap;
28     static SkPDFBitmap* Create(SkPDFCanon*, const SkBitmap&);
equals(const SkBitmap & other)29     bool equals(const SkBitmap& other) const {
30         return fBitmap.getGenerationID() == other.getGenerationID() &&
31                fBitmap.pixelRefOrigin() == other.pixelRefOrigin() &&
32                fBitmap.dimensions() == other.dimensions();
33     }
34 
35 protected:
36     const SkBitmap fBitmap;
SkPDFBitmap(const SkBitmap & bm)37     SkPDFBitmap(const SkBitmap& bm) : fBitmap(bm) {}
38 };
39 
40 #endif  // SkPDFBitmap_DEFINED
41