File indexing completed on 2024-05-12 16:34:26 

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 BLENDEFFECT_H
0021 #define BLENDEFFECT_H
0022 
0023 #include "KoFilterEffect.h"
0024 
0025 #define BlendEffectId "feBlend"
0026 
0027 /// A color matrix effect
0028 class BlendEffect : public KoFilterEffect
0029 {
0030 public:
0031     enum BlendMode {
0032         Normal,
0033         Multiply,
0034         Screen,
0035         Darken,
0036         Lighten
0037     };
0038 
0039     BlendEffect();
0040 
0041     /// Returns the type of the color matrix
0042     BlendMode blendMode() const;
0043 
0044     /// Sets the blend mode
0045     void setBlendMode(BlendMode blendMode);
0046 
0047     /// reimplemented from KoFilterEffect
0048     QImage processImage(const QImage &image, const KoFilterEffectRenderContext &context) const override;
0049     /// reimplemented from KoFilterEffect
0050     QImage processImages(const QVector<QImage> &images, const KoFilterEffectRenderContext &context) const override;
0051     /// reimplemented from KoFilterEffect
0052     bool load(const KoXmlElement &element, const KoFilterEffectLoadingContext &context) override;
0053     /// reimplemented from KoFilterEffect
0054     void save(KoXmlWriter &writer) override;
0055 
0056 private:
0057 
0058     BlendMode m_blendMode; ///< the blend mode
0059 };
0060 
0061 #endif // BLENDEFFECT_H