00001 /**************************************************************************** 00002 ** 00003 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). 00004 ** Contact: Alexander Bokovoy <alexander.bokovoy@nokia.com> 00005 ** 00006 ** This file is part of the Quill Image Filters package. 00007 ** 00008 ** Commercial Usage 00009 ** Licensees holding valid Qt Commercial licenses may use this file in 00010 ** accordance with the Qt Commercial License Agreement provided with the 00011 ** Software or, alternatively, in accordance with the terms contained in 00012 ** a written agreement between you and Nokia. 00013 ** 00014 ** GNU Lesser General Public License Usage 00015 ** Alternatively, this file may be used under the terms of the GNU Lesser 00016 ** General Public License version 2.1 as published by the Free Software 00017 ** Foundation and appearing in the file LICENSE.LGPL included in the 00018 ** packaging of this file. Please review the following information to 00019 ** ensure the GNU Lesser General Public License version 2.1 requirements 00020 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00021 ** 00022 ** In addition, as a special exception, Nokia gives you certain 00023 ** additional rights. These rights are described in the Nokia Qt LGPL 00024 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this 00025 ** package. 00026 ** 00027 ** GNU General Public License Usage 00028 ** Alternatively, this file may be used under the terms of the GNU 00029 ** General Public License version 3.0 as published by the Free Software 00030 ** Foundation and appearing in the file LICENSE.GPL included in the 00031 ** packaging of this file. Please review the following information to 00032 ** ensure the GNU General Public License version 3.0 requirements will be 00033 ** met: http://www.gnu.org/copyleft/gpl.html. 00034 ** 00035 ** If you are unsure which license is appropriate for your use, please 00036 ** contact the sales department at qt-sales@nokia.com. 00037 ** 00038 ****************************************************************************/ 00039 00054 #ifndef GAUSSIAN_H 00055 #define GAUSSIAN_H 00056 00057 #include "quillimagefilterimplementation.h" 00058 00059 class Gaussian : public QuillImageFilterImplementation 00060 { 00061 public: 00062 Gaussian(); 00063 ~Gaussian(); 00064 00065 QuillImage apply(const QuillImage &image) const; 00066 00067 bool setOption(const QString &option, const QVariant &value); 00068 QVariant option(const QString &option) const; 00069 const QStringList supportedOptions() const; 00070 00071 virtual const QString name() const { return QuillImageFilter::Name_Gaussian; } 00072 00073 private: 00074 static int gaussianFunction(int x, int y, float radius); 00075 void createKernel(float radius); 00076 int kernelValue(int x) const; 00077 static void cap(int *x); 00078 00079 private: 00080 int radius; 00081 int *kernel; 00082 int kernelRadius; 00083 int kernelSize; 00084 int kernelSum; 00085 }; 00086 00087 #endif