/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2005-07-18
 * Description : Free rotation threaded image filter.
 * 
 * Copyright (C) 2004-2007 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 FREE_ROTATION_H
#define FREE_ROTATION_H

// TQt includes.

#include <tqsize.h>
#include <tqcolor.h>

// Digikam includes.

#include "dimgthreadedfilter.h"

namespace DigikamFreeRotationImagesPlugin
{

class FreeRotation : public Digikam::DImgThreadedFilter
{

public:
    
    FreeRotation(Digikam::DImg *orgImage, TQObject *parent=0, double angle=0.0,
                 bool antialiasing=true, int autoCrop=NoAutoCrop, TQColor backgroundColor=TQt::black, 
                 int orgW=0, int orgH=0);
    
    ~FreeRotation(){};
    
    TQSize getNewSize(void){ return m_newSize; };

public:
    
    enum AutoCropTypes 
    {
        NoAutoCrop=0,
        WidestArea,
        LargestArea
    };
        
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_autoCrop;
    int    m_orgW;
    int    m_orgH;
    
    double m_angle;
    
    TQSize  m_newSize;
 
    TQColor m_backgroundColor;
};    

}  // NameSpace DigikamFreeRotationImagesPlugin

#endif /* FREE_ROTATION_H */