1/*
2 * Copyright 2013 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
8#ifndef SkTileImageFilter_DEFINED
9#define SkTileImageFilter_DEFINED
10
11#include "SkImageFilter.h"
12
13class SK_API SkTileImageFilter : public SkImageFilter {
14    typedef SkImageFilter INHERITED;
15
16public:
17    /** Create a tile image filter
18        @param srcRect  Defines the pixels to tile
19        @param dstRect  Defines the pixels where tiles are drawn
20        @param input    Input from which the subregion defined by srcRect will be tiled
21    */
22    static SkTileImageFilter* Create(const SkRect& srcRect, const SkRect& dstRect,
23                                     SkImageFilter* input);
24
25    virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const Context& ctx,
26                               SkBitmap* dst, SkIPoint* offset) const override;
27    virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
28                                SkIRect* dst) const override;
29
30    SK_TO_STRING_OVERRIDE()
31    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTileImageFilter)
32
33protected:
34    SkTileImageFilter(const SkRect& srcRect, const SkRect& dstRect, SkImageFilter* input)
35        : INHERITED(1, &input, NULL), fSrcRect(srcRect), fDstRect(dstRect) {}
36
37    void flatten(SkWriteBuffer& buffer) const override;
38
39private:
40    SkRect fSrcRect;
41    SkRect fDstRect;
42};
43
44#endif
45