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functionwin.h

/*
    Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
    
    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.

    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.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/


#ifndef __FUNCTIONWIN_H
#define __FUNCTIONWIN_H


#include "clxclient.h"


class Functionwin : public X_window
{
public:

    Functionwin (X_window *parent, X_callback *callb, int xp, int yp, 
                 unsigned long bgnd, unsigned long grid, unsigned long mark);
    ~Functionwin (void);
 
    void set_xparam (int n, int x0, int dx);
    void set_yparam (int k, X_scale_style *scale, unsigned long color);
    void show (void);

    void reset (int k);
    void set_point (int k, int i, float v);
    void upd_point (int k, int i, float v);
    void clr_point (int k, int i);
    int   get_ind (void) const { return _ic; }
    int   get_fun (void) const { return _fc; }
    float get_val (void) const { return _vc; }   
    void set_mark (int i);
    void redraw (void);

    int xs (void) const { return _xs; }
    int ys (void) const { return _ys; }

private:

    enum { NFUNC = 2 };

    virtual void handle_event (XEvent *xe);

    void expose (XExposeEvent *E);
    void bpress (XButtonEvent *E);
    void motion (XPointerMovedEvent *E);
    void brelse (XButtonEvent *E);
    void plot_grid (void);
    void plot_mark (void);
    void plot_line (int);
    void move_point (int);
    void move_curve (int);
    void find_sect (int *);
    void move_sect (int *);

    X_callback     *_callb; 
    unsigned long   _bgnd;
    unsigned long   _grid;
    unsigned long   _mark;
    int             _xs;
    int             _ys;
    int             _x0;
    int             _dx;
    int             _ymin;
    int             _ymax;
    int             _n;
    unsigned long   _co [NFUNC];
    X_scale_style  *_sc [NFUNC];
    int            *_yc [NFUNC];
    char           *_st [NFUNC];
    int             _fc;
    int             _ic;
    int             _im;
    float           _vc;
};


#endif

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