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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date : 2005-07-18
+ * Description : Shear threaded image filter.
+ *
+ * Copyright (C) 2005-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * ============================================================ */
+
+#ifndef SHEAR_H
+#define SHEAR_H
+
+// Qt includes.
+
+#include <qsize.h>
+#include <qcolor.h>
+
+// Digikam includes.
+
+#include "dimgthreadedfilter.h"
+
+namespace DigikamShearToolImagesPlugin
+{
+
+class Shear : public Digikam::DImgThreadedFilter
+{
+
+public:
+
+ Shear(Digikam::DImg *orgImage, QObject *parent=0, float hAngle=0.0, float vAngle=0.0,
+ bool antialiasing=true, QColor backgroundColor=Qt::black, int orgW=0, int orgH=0);
+
+ ~Shear(){};
+
+ QSize getNewSize(void){ return m_newSize; };
+
+private:
+
+ virtual void filterImage(void);
+
+ inline int setPosition (int Width, int X, int Y)
+ {
+ return (Y *Width*4 + 4*X);
+ };
+
+ inline bool isInside (int Width, int Height, int X, int Y)
+ {
+ bool bIsWOk = ((X < 0) ? false : (X >= Width ) ? false : true);
+ bool bIsHOk = ((Y < 0) ? false : (Y >= Height) ? false : true);
+ return (bIsWOk && bIsHOk);
+ };
+
+private:
+
+ bool m_antiAlias;
+
+ int m_orgW;
+ int m_orgH;
+
+ float m_hAngle;
+ float m_vAngle;
+
+ QColor m_backgroundColor;
+
+ QSize m_newSize;
+};
+
+} // NameSpace DigikamShearToolImagesPlugin
+
+#endif /* SHEAR_H */