File indexing completed on 2024-05-12 16:34:27
0001 /* This file is part of the KDE project 0002 * Copyright (c) 2009 Jan Hambrecht <jaham@gmx.net> 0003 * 0004 * This library is free software; you can redistribute it and/or 0005 * modify it under the terms of the GNU Lesser General Public 0006 * License as published by the Free Software Foundation; either 0007 * version 2.1 of the License, or (at your option) any later version. 0008 * 0009 * This library is distributed in the hope that it will be useful, 0010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 0011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 0012 * Library General Public License for more details. 0013 * 0014 * You should have received a copy of the GNU Lesser General Public License 0015 * along with this library; see the file COPYING.LIB. If not, write to 0016 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 0017 * Boston, MA 02110-1301, USA. 0018 */ 0019 0020 #ifndef COLORMATRIXEFFECT_H 0021 #define COLORMATRIXEFFECT_H 0022 0023 #include "KoFilterEffect.h" 0024 #include <QVector> 0025 0026 #define ColorMatrixEffectId "feColorMatrix" 0027 0028 /// A color matrix effect 0029 class ColorMatrixEffect : public KoFilterEffect 0030 { 0031 public: 0032 enum Type { 0033 Matrix, 0034 Saturate, 0035 HueRotate, 0036 LuminanceAlpha 0037 }; 0038 0039 ColorMatrixEffect(); 0040 0041 /// Returns the type of the color matrix 0042 Type type() const; 0043 0044 /// Returns the size of the color matrix 0045 static int colorMatrixSize(); 0046 0047 /// Returns the row count of the color matrix 0048 static int colorMatrixRowCount(); 0049 0050 /// Returns the column count of the color matrix 0051 static int colorMatrixColumnCount(); 0052 0053 QVector<qreal> colorMatrix() const; 0054 0055 /// Sets a color matrix and changes type to Matrix 0056 void setColorMatrix(const QVector<qreal> &matrix); 0057 0058 /// Sets a saturate value and changes type to Saturate 0059 void setSaturate(qreal value); 0060 0061 /// Returns the saturate value if type == Saturate 0062 qreal saturate() const; 0063 0064 /// Sets a hue rotate value and changes type to HueRotate 0065 void setHueRotate(qreal value); 0066 0067 /// Returns the saturate value if type == HueRotate 0068 qreal hueRotate() const; 0069 0070 /// Sets luminance alpha an changes type to LuminanceAlpha 0071 void setLuminanceAlpha(); 0072 0073 /// reimplemented from KoFilterEffect 0074 QImage processImage(const QImage &image, const KoFilterEffectRenderContext &context) const override; 0075 /// reimplemented from KoFilterEffect 0076 bool load(const KoXmlElement &element, const KoFilterEffectLoadingContext &context) override; 0077 /// reimplemented from KoFilterEffect 0078 void save(KoXmlWriter &writer) override; 0079 0080 private: 0081 /// sets color matrix to identity matrix 0082 void setIdentity(); 0083 0084 Type m_type; ///< the color matrix type 0085 QVector<qreal> m_matrix; ///< the color matrix to apply 0086 qreal m_value; ///< the value (saturate or hueRotate) 0087 }; 0088 0089 #endif // COLORMATRIXEFFECT_H