SkMagnifierImageFilter.h revision 8ea78d83dc4e8243c16eedf8100a3987c54123fa 
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
9#ifndef SkMagnifierImageFilter_DEFINED
10#define SkMagnifierImageFilter_DEFINED
11
12#include "SkRect.h"
13#include "SkImageFilter.h"
14
15class SK_API SkMagnifierImageFilter : public SkImageFilter {
16public:
17    SkMagnifierImageFilter(SkRect srcRect, SkScalar inset);
18
19    virtual bool asNewEffect(GrEffect** stage,
20                             GrTexture* texture) const SK_OVERRIDE;
21
22    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMagnifierImageFilter)
23
24protected:
25    explicit SkMagnifierImageFilter(SkFlattenableReadBuffer& buffer);
26    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
27
28    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
29                               SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
30
31private:
32    SkRect fSrcRect;
33    SkScalar fInset;
34    typedef SkImageFilter INHERITED;
35};
36
37#endif
38