QtView.h

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/* -*- mode: c++ -*- */

#ifndef _QtView_H_
#define _QtView_H_

#include "QtViewImp.h"

#if QT_VERSION < 0x040000
#include <qcanvas.h>
#else
#include <q3canvas.h>
#endif

#include <qpixmap.h>

namespace hippodraw {

#if QT_VERSION < 0x040000
class MDL_QTHIPPOPLOT_API QtView : public QtViewImp, public QCanvasRectangle
#else
class MDL_QTHIPPOPLOT_API QtView : public QtViewImp, public Q3CanvasRectangle
#endif

{
private:

  QPixmap m_pixmap;

  int m_upage_w;
  
  bool m_filled;

  bool m_crosshairs;

  bool m_is_drawing;


  int toCanvasX ( double dx ) const;

  int toCanvasY ( double dy ) const;

#if QT_VERSION < 0x040000
  void transformAndFill ( QPointArray & array, 
#else
  void transformAndFill ( QPolygon & array, 
#endif
                          const std::vector < double > & x,
                          const std::vector < double > & y,
                          int (QtView::* xfunc ) ( double ) const,
                          int (QtView::* yfunc ) ( double ) const );

  void drawWithPixmap ( QPainter & painter );
  void drawMethod ( const std::vector< double > & x,
                    const std::vector< double > & y,
                    int opt1, 
                    int opt2 );

  void drawViewMethod ( const std::vector< double > & x,
                        const std::vector< double > & y,
                        int opt1, 
                        int opt2 );

  void ensureOffScrSize ( int osw, int osh );

public:

  QtView ( PlotterBase * plotter );

  QtView ( const QtView & );

  virtual ~QtView ();

  virtual void draw ( QPainter & );

  virtual void drawShape ( QPainter & );

  virtual void update ( const Observable * );

  virtual void setShowCrossHairs ( bool flag );

  virtual Rect getDrawRect () const;


  void updateDrawRect ();
  
  void setDrawRect ( const QRect & rect );

  void setDrawRect ( Rect & rect );

  virtual void setDrawRect ( float x, float y, float width, float height );

  int toViewX ( double datX ) const;

  int toViewY ( double datY ) const;


  virtual void fillPickedPoint ( double x, double y, 
                                 std::vector < double > & picked ) const;
  
  virtual void setPageWidth( int upage_w );

  /* Test if the plotter of this view is a text plotter */
  bool isTextView() const;                
};

} // namespace hippodraw

#endif // _QtView_H_