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 FEMorphology_h
23 #define FEMorphology_h
24 
25 #if ENABLE(FILTERS)
26 #include "FilterEffect.h"
27 #include "Filter.h"
28 
29 namespace WebCore {
30 
31 enum MorphologyOperatorType {
32     FEMORPHOLOGY_OPERATOR_UNKNOWN = 0,
33     FEMORPHOLOGY_OPERATOR_ERODE = 1,
34     FEMORPHOLOGY_OPERATOR_DILATE = 2
35 };
36 
37 class FEMorphology : public FilterEffect {
38 public:
39     static PassRefPtr<FEMorphology> create(Filter*, MorphologyOperatorType, float radiusX, float radiusY);
40     MorphologyOperatorType morphologyOperator() const;
41     bool setMorphologyOperator(MorphologyOperatorType);
42 
43     float radiusX() const;
44     bool setRadiusX(float);
45 
46     float radiusY() const;
47     bool setRadiusY(float);
48 
49     virtual void apply();
50     virtual void dump();
51 
52     virtual void determineAbsolutePaintRect();
53 
54     virtual TextStream& externalRepresentation(TextStream&, int indention) const;
55 
56 private:
57     FEMorphology(Filter*, MorphologyOperatorType, float radiusX, float radiusY);
58 
59     MorphologyOperatorType m_type;
60     float m_radiusX;
61     float m_radiusY;
62 };
63 
64 } // namespace WebCore
65 
66 #endif // ENABLE(FILTERS)
67 
68 #endif // FEMorphology_h
69