1/*
2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#ifndef FEComposite_h
23#define FEComposite_h
24
25#if ENABLE(FILTERS)
26#include "FilterEffect.h"
27
28#include "PlatformString.h"
29#include "Filter.h"
30
31namespace WebCore {
32
33enum CompositeOperationType {
34    FECOMPOSITE_OPERATOR_UNKNOWN    = 0,
35    FECOMPOSITE_OPERATOR_OVER       = 1,
36    FECOMPOSITE_OPERATOR_IN         = 2,
37    FECOMPOSITE_OPERATOR_OUT        = 3,
38    FECOMPOSITE_OPERATOR_ATOP       = 4,
39    FECOMPOSITE_OPERATOR_XOR        = 5,
40    FECOMPOSITE_OPERATOR_ARITHMETIC = 6
41};
42
43class FEComposite : public FilterEffect {
44public:
45    static PassRefPtr<FEComposite> create(Filter*, const CompositeOperationType&, float, float, float, float);
46
47    CompositeOperationType operation() const;
48    bool setOperation(CompositeOperationType);
49
50    float k1() const;
51    bool setK1(float);
52
53    float k2() const;
54    bool setK2(float);
55
56    float k3() const;
57    bool setK3(float);
58
59    float k4() const;
60    bool setK4(float);
61
62    virtual void apply();
63    virtual void dump();
64
65    virtual void determineAbsolutePaintRect();
66
67    virtual TextStream& externalRepresentation(TextStream&, int indention) const;
68
69private:
70    FEComposite(Filter*, const CompositeOperationType&, float, float, float, float);
71
72    CompositeOperationType m_type;
73    float m_k1;
74    float m_k2;
75    float m_k3;
76    float m_k4;
77};
78
79} // namespace WebCore
80
81#endif // ENABLE(FILTERS)
82
83#endif // FEComposite_h
84