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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) 2005 Eric Seidel <eric (at) 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