SkPictureImageFilter.h revision 5e0995e4b36178e1e4465a9f50114ed39f038c27 
1/*
2 * Copyright 2013 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 SkPictureImageFilter_DEFINED
9#define SkPictureImageFilter_DEFINED
10
11#include "SkImageFilter.h"
12#include "SkPicture.h"
13
14class SK_API SkPictureImageFilter : public SkImageFilter {
15public:
16    /**
17     *  Refs the passed-in picture.
18     */
19    explicit SkPictureImageFilter(SkPicture* picture);
20
21    /**
22     *  Refs the passed-in picture. rect can be used to crop or expand the destination rect when
23     *  the picture is drawn. (No scaling is implied by the dest rect; only the CTM is applied.)
24     */
25    SkPictureImageFilter(SkPicture* picture, const SkRect& rect);
26
27    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureImageFilter)
28
29protected:
30    virtual ~SkPictureImageFilter();
31    /*  Constructs an SkPictureImageFilter object from an SkReadBuffer.
32     *  Note: If the SkPictureImageFilter object construction requires bitmap
33     *  decoding, the decoder must be set on the SkReadBuffer parameter by calling
34     *  SkReadBuffer::setBitmapDecoder() before calling this constructor.
35     *  @param SkReadBuffer Serialized picture data.
36     */
37    explicit SkPictureImageFilter(SkReadBuffer&);
38    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
39    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
40                               SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
41
42private:
43    SkPicture* fPicture;
44    SkRect     fRect;
45    typedef SkImageFilter INHERITED;
46};
47
48#endif
49