SkPictureImageFilter.h revision 4cb543d6057b692e1099e9f115155f0bf323a0c8 
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    static SkPictureImageFilter* Create(SkPicture* picture) {
20        return SkNEW_ARGS(SkPictureImageFilter, (picture));
21    }
22
23    /**
24     *  Refs the passed-in picture. cropRect can be used to crop or expand the destination rect when
25     *  the picture is drawn. (No scaling is implied by the dest rect; only the CTM is applied.)
26     */
27    static SkPictureImageFilter* Create(SkPicture* picture, const SkRect& cropRect) {
28        return SkNEW_ARGS(SkPictureImageFilter, (picture, cropRect));
29    }
30
31    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureImageFilter)
32
33protected:
34    virtual ~SkPictureImageFilter();
35    /*  Constructs an SkPictureImageFilter object from an SkReadBuffer.
36     *  Note: If the SkPictureImageFilter object construction requires bitmap
37     *  decoding, the decoder must be set on the SkReadBuffer parameter by calling
38     *  SkReadBuffer::setBitmapDecoder() before calling this constructor.
39     *  @param SkReadBuffer Serialized picture data.
40     */
41    explicit SkPictureImageFilter(SkReadBuffer&);
42    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
43    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
44                               SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
45
46#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
47public:
48#endif
49    explicit SkPictureImageFilter(SkPicture* picture);
50    SkPictureImageFilter(SkPicture* picture, const SkRect& cropRect);
51
52private:
53    SkPicture* fPicture;
54    SkRect     fCropRect;
55    typedef SkImageFilter INHERITED;
56};
57
58#endif
59