SkBitmapSource.h revision 4cb543d6057b692e1099e9f115155f0bf323a0c8 
1/*
2 * Copyright 2012 The Android Open Source Project
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
8#ifndef SkBitmapSource_DEFINED
9#define SkBitmapSource_DEFINED
10
11#include "SkImageFilter.h"
12#include "SkBitmap.h"
13
14class SK_API SkBitmapSource : public SkImageFilter {
15public:
16    static SkBitmapSource* Create(const SkBitmap& bitmap) {
17        return SkNEW_ARGS(SkBitmapSource, (bitmap));
18    }
19    static SkBitmapSource* Create(const SkBitmap& bitmap, const SkRect& srcRect,
20                                  const SkRect& dstRect) {
21        return SkNEW_ARGS(SkBitmapSource, (bitmap, srcRect, dstRect));
22    }
23    virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE;
24
25    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapSource)
26
27protected:
28    explicit SkBitmapSource(SkReadBuffer& buffer);
29    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
30    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
31                               SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
32    virtual bool onFilterBounds(const SkIRect& src, const SkMatrix& ctm, SkIRect* dst) const SK_OVERRIDE;
33
34#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
35public:
36#endif
37    explicit SkBitmapSource(const SkBitmap& bitmap);
38    SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect);
39
40private:
41    SkBitmap fBitmap;
42    SkRect   fSrcRect, fDstRect;
43    typedef SkImageFilter INHERITED;
44};
45
46#endif
47