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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 FEColorMatrix_h
     23 #define FEColorMatrix_h
     24 
     25 #if ENABLE(FILTERS)
     26 #include "FilterEffect.h"
     27 
     28 #include "Filter.h"
     29 #include <wtf/Vector.h>
     30 
     31 namespace WebCore {
     32 
     33 enum ColorMatrixType {
     34     FECOLORMATRIX_TYPE_UNKNOWN          = 0,
     35     FECOLORMATRIX_TYPE_MATRIX           = 1,
     36     FECOLORMATRIX_TYPE_SATURATE         = 2,
     37     FECOLORMATRIX_TYPE_HUEROTATE        = 3,
     38     FECOLORMATRIX_TYPE_LUMINANCETOALPHA = 4
     39 };
     40 
     41 class FEColorMatrix : public FilterEffect {
     42 public:
     43     static PassRefPtr<FEColorMatrix> create(Filter*, ColorMatrixType, const Vector<float>&);
     44 
     45     ColorMatrixType type() const;
     46     bool setType(ColorMatrixType);
     47 
     48     const Vector<float>& values() const;
     49     bool setValues(const Vector<float>&);
     50 
     51     virtual void apply();
     52     virtual void dump();
     53 
     54     virtual TextStream& externalRepresentation(TextStream&, int indention) const;
     55 
     56 private:
     57     FEColorMatrix(Filter*, ColorMatrixType, const Vector<float>&);
     58 
     59     ColorMatrixType m_type;
     60     Vector<float> m_values;
     61 };
     62 
     63 } // namespace WebCore
     64 
     65 #endif // ENABLE(FILTERS)
     66 
     67 #endif // FEColorMatrix_h
     68