// $Id: fgl_xydata.h $
// =================================================================
//  This code is distributed under the terms and conditions of the
//  CCP4 Program Suite Licence Agreement as 'Part 2' (Annex 2)
//  software. A copy of the CCP4 licence can be obtained by writing
//  to CCP4, Research Complex at Harwell, Rutherford Appleton
//  Laboratory, Didcot OX11 0FA, UK, or from
//  http://www.ccp4.ac.uk/ccp4license.php.
// =================================================================
//
//    29.08.13   <--  Date of Last Modification.
//                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//  ----------------------------------------------------------------
//
//  **** Module  :  fgl_xydata <interface>
//       ~~~~~~~~~
//  **** Project :  QtLibs/FGL - plotting in Qt
//       ~~~~~~~~~
//  **** Classes :  fgl::XYData
//       ~~~~~~~~~
//
//  (C) E. Krissinel 2012-2013
//
// =================================================================
//

#ifndef FGL_XYDATA_H
#define FGL_XYDATA_H

#include <QVector>
#include <QPen>

QT_BEGIN_NAMESPACE
class QPainter;
QT_END_NAMESPACE

namespace fgl  {

  class Scene;
  class XYFrame;

  class XYData  {

    public:

      enum Style { None,Circles,Spots,Haircomb };

      XYData ();
      ~XYData();

      void clear();

      void setXY ( const qreal *xvector, const qreal *yvector,
                   const int npoints );
      inline void setXY ( const QVector<qreal> & vx,
                          const QVector<qreal> & vy ) { x = vx; y = vy; }
      inline void setX  ( const QVector<qreal> & vx ) { x = vx; }
      inline void setY  ( const QVector<qreal> & vy ) { y = vy; }

      inline void addXY ( const qreal xpoint, const qreal ypoint )
                                { x.append(xpoint); y.append(ypoint); }

      inline void setLineWidth  ( const qreal lw ) { lineWidth  = lw; }
      inline void setCustomStyle( const Style s  ) { customStyle = s; }
      inline void setCustomSize ( const qreal cs ) { customSize = cs; }

      inline QVector<qreal> & getX()  { return x;           }
      inline QVector<qreal> & getY()  { return y;           }
      inline qreal         getXMin()  { return xMin;        }
      inline qreal         getXMax()  { return xMax;        }
      inline qreal         getYMin()  { return yMin;        }
      inline qreal         getYMax()  { return yMax;        }
      inline QPen         & getPen()  { return pen;         }
      inline qreal    getLineWidth()  { return lineWidth;   }
      inline qreal   getCustomSize()  { return customSize;  }
      inline Style  getCustomStyle()  { return customStyle; }

      inline int  size() { return x.size(); }

      void calcRange();

      inline void setYMin ( const qreal ymin )  { yMin = ymin; }
      inline void setYMax ( const qreal ymax )  { yMax = ymax; }

      void preparePainter ( QPainter *painter );
      void paintFeature   ( const qreal x, const qreal y,
                            QPainter *painter,
                            const qreal xmin, const qreal xmax,
                            const qreal ymin, const qreal ymax );
      void paintData      ( QPainter *painter, Scene *scene,
                            XYFrame *frame,
                            const qreal xmin, const qreal xmax,
                            const qreal ymin, const qreal ymax );

    protected:
      QVector<qreal> x;           //!< x-nodes
      QVector<qreal> y;           //!< y-nodes
      qreal          xMin;        //!< minimal x
      qreal          xMax;        //!< maximal x
      qreal          yMin;        //!< minimal y
      qreal          yMax;        //!< maximal y
      QPen           pen;         //!< pen properties
      Style          customStyle; //!< custom pen features
      qreal          lineWidth;   //!< relative line width
      qreal          customSize;  //!< relative size of custom pen features

  };

}

#endif // FGL_XYDATA_H