1/*
2 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
3 * Copyright (C) 2013 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above
10 *    copyright notice, this list of conditions and the following
11 *    disclaimer.
12 * 2. Redistributions in binary form must reproduce the above
13 *    copyright notice, this list of conditions and the following
14 *    disclaimer in the documentation and/or other materials
15 *    provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
26 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef ReferenceFilter_h
32#define ReferenceFilter_h
33
34#include "platform/geometry/FloatRect.h"
35#include "platform/graphics/filters/Filter.h"
36#include "wtf/PassRefPtr.h"
37#include "wtf/RefPtr.h"
38
39namespace WebCore {
40
41class SourceGraphic;
42class FilterEffect;
43
44class PLATFORM_EXPORT ReferenceFilter: public Filter {
45public:
46    static PassRefPtr<ReferenceFilter> create()
47    {
48        return adoptRef(new ReferenceFilter());
49    }
50
51    virtual IntRect sourceImageRect() const OVERRIDE { return IntRect(); };
52
53    void setLastEffect(PassRefPtr<FilterEffect>);
54    FilterEffect* lastEffect() const { return m_lastEffect.get(); }
55
56    SourceGraphic* sourceGraphic() const { return m_sourceGraphic.get(); }
57
58private:
59    ReferenceFilter();
60    virtual ~ReferenceFilter();
61
62    RefPtr<SourceGraphic> m_sourceGraphic;
63    RefPtr<FilterEffect> m_lastEffect;
64};
65
66}
67
68#endif // ReferenceFilter_h
69