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qscurve.h

/***************************************************************************
                                qscurve.h
                             -------------------                                         
    begin                : 01-January-2000
    copyright            : (C) 2000 by Kamil Dobkowski                         
    email                : kamildobk@poczta.onet.pl                                     
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 of the License, or     *
 *   (at your option) any later version.                                   * 
 *                                                                         *
 ***************************************************************************/


#ifndef QSCURVE_H
#define QSCURVE_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include"qsaxes.h"
#include"qsplot.h"
#include"qscoord.h"
#include"qssegment.h"

//-------------------------------------------------------------------//



class QSCurve : public QSPlot2D
 {
  Q_OBJECT
    Q_PROPERTY( int type READ type WRITE setType )
    Q_PROPERTY( double fixedDX READ fixedDX WRITE setFixedDX )
    Q_PROPERTY( double fixedDY READ fixedDY WRITE setFixedDY )
    Q_PROPERTY( double percentDX READ percentDX WRITE setPercentDX )
    Q_PROPERTY( double percentDY READ percentDY WRITE setPercentDY )
    Q_PROPERTY( double zeroLevelX READ zeroLevelX WRITE setZeroLevelX )
    Q_PROPERTY( double zeroLevelY READ zeroLevelY WRITE setZeroLevelY )
    Q_PROPERTY( QString arrow1 READ arrow1Property WRITE setArrow1Property )
    Q_PROPERTY( QString arrow2 READ arrow2Property WRITE setArrow2Property )
    
  public:

        enum Channels   {
                          XVector  = 0,
                          YVector  = 1,
                          DXVector = 2,
                          DYVector = 3,
                          LineStyles = 4,
                          FillStyles = 5,
              PointStyles = 6,
              ArrowStyles = 7,
              ErrorLineStyles = 8,
              XLineStyles = 9,
              YLineStyles = 10
                        };


    enum SeriesType {
             Lines = 0,
             Area,
             Ribbon,
             Bars,
             Vectors,
             Flux,
             Rectangles,
             Ellipses,
             LeftStairs,
             MiddleStairs,
             RightStairs,
             User
            };
    
    QSCurve( QSAxes* parent, const char * name=0 );
       ~QSCurve();
        void setType( int type );
        int type() const { return m_type; }
    void setFixedDelta( const QSPt2f& delta );
    void setFixedDX( double value );
    void setFixedDY( double value );
    void setPercentDelta( const QSPt2f& delta );
    void setPercentDX( double value );
    void setPercentDY( double value );
    QSPt2f fixedDelta() const { return m_fdelta; }
    double fixedDX() const { return m_fdelta.x; }
    double fixedDY() const { return m_fdelta.y; }
    QSPt2f percentDelta() const { return m_pdelta; }
    double percentDX() const { return m_pdelta.x; }
    double percentDY() const { return m_pdelta.y; }
        void setZeroPoint( const QSPt2f& p );
        void setZeroLevelX( double x );
        void setZeroLevelY( double y ); 
        QSPt2f zeroPoint() const { return m_zero; }
    double zeroLevelX() const { return m_zero.x; }
    double zeroLevelY() const { return m_zero.y; }
        void setPObject( QSSegment *po );
        QSSegment *pObject() const { return m_po; }
    void setArrow1( const QSGArrow& astyle );
    void setArrow2( const QSGArrow& astyle );
    void setArrow1Property( const QString& value ) { setArrow1(toQSGArrow(value)); }
    void setArrow2Property( const QString& value ) { setArrow2(toQSGArrow(value)); }
    QSGArrow arrow1() const { return m_arrow1; }
    QSGArrow arrow2() const { return m_arrow2; }
    QString arrow1Property() const { return toQString(arrow1()); }
    QString arrow2Property() const { return toQString(arrow2()); }


    virtual QString posInfo( QSPt2f& pos );
        virtual QSPt2f legendItemSize( QSDrv *drv );
        virtual void drawLegendItem( const QSPt2f& pos, QSDrv *drv );
    virtual void loadStateFromStream( QDataStream& stream, QSObjectFactory *factory );
    virtual void saveStateToStream( QDataStream& stream, QSObjectFactory *factory );
    virtual QString channelVariable( int channel ) const;   
        virtual ColumnType columnType( int channel, int column ) const;
     enum FillElement {
        BaseFill    = 0
        };
        
     enum LineElement {
        BaseLine    = 0,
        ErrorLine   = 1,
        XLine       = 2,
        YLine       = 3
        };
        
     enum PointElement {
        PointMark   = 0
        };

      protected:

        virtual void dataChanged( int channel = -1 );
    virtual void allocRuntimeData();
        virtual void freeRuntimeData();
        virtual bool getAxisRange( QSAxis *axis, double& min, double& max );
        virtual bool start();
        virtual bool step();
        virtual void end();

     private:
        SeriesType   m_type;
        QSPt2f       m_zero;
        QSPt2f       m_fdelta;
        QSPt2f       m_pdelta;
        QSGArrow     m_arrow1;
    QSGArrow     m_arrow2;
        QSSegment   *m_po;
        double       m_xmin, m_xmax;
        double       m_ymin, m_ymax;
        bool         m_evalid;   // extremes valid
    struct       curve_runtime_data *d;
    
    enum Stage {
                 StartDrawLines  = 0,
                 DrawLines       = 1,
                 StartDrawSeries     = 2,
                 DrawSeries          = 3,
                 StartDrawErrorbars  = 4,
                 DrawErrorbars   = 5,
                 StartDrawPointMarks = 6,
                 DrawPointMarks  = 7,
                 Stop        = 8 };
            
        void create_po();   
    void get_values( int index );
    void get_attributes( int index );
    void start_draw_errorbars();
    void draw_errorbars();
    void start_draw_series();
    void draw_series();
    void start_draw_lines();
    void draw_lines();
    void start_draw_pointmarks();
    void draw_pointmarks();
 };



#endif

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