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        return SkNEW_ARGS(SkTileImageFilter, (srcRect, dstRect, input));
25    }
26
27    virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const Context& ctx,
28                               SkBitmap* dst, SkIPoint* offset) const SK_OVERRIDE;
29    virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
30                                SkIRect* dst) const SK_OVERRIDE;
31
32    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTileImageFilter)
33
34protected:
35    SkTileImageFilter(const SkRect& srcRect, const SkRect& dstRect, SkImageFilter* input)
36        : INHERITED(input), fSrcRect(srcRect), fDstRect(dstRect) {}
37    explicit SkTileImageFilter(SkReadBuffer& buffer);
38
39    virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
40
41private:
42    SkRect fSrcRect;
43    SkRect fDstRect;
44};
45
46#endif
47