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 SkComposeImageFilter_DEFINED
9#define SkComposeImageFilter_DEFINED
10
11#include "SkImageFilter.h"
12
13class SK_API SkComposeImageFilter : public SkImageFilter {
14public:
15    virtual ~SkComposeImageFilter();
16
17    static SkImageFilter* Create(SkImageFilter* outer, SkImageFilter* inner) {
18        if (NULL == outer) {
19            return SkSafeRef(inner);
20        }
21        if (NULL == inner) {
22            return SkRef(outer);
23        }
24        SkImageFilter* inputs[2] = { outer, inner };
25        return SkNEW_ARGS(SkComposeImageFilter, (inputs));
26    }
27
28    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeImageFilter)
29
30protected:
31    explicit SkComposeImageFilter(SkImageFilter* inputs[2]) : INHERITED(2, inputs) {
32        SkASSERT(inputs[0]);
33        SkASSERT(inputs[1]);
34    }
35#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
36    explicit SkComposeImageFilter(SkReadBuffer& buffer);
37#endif
38
39    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
40                               SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
41    virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) const SK_OVERRIDE;
42
43private:
44    typedef SkImageFilter INHERITED;
45};
46
47#endif
48