/usr/include/mgl2/Fl_MathGL.h is in libmgl-dev 2.4.1-2build2.
This file is owned by root:root, with mode 0o644.
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* Fl_MathGL.h is part of Math Graphic Library
* Copyright (C) 2007-2016 Alexey Balakin <mathgl.abalakin@gmail.ru> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 3 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 Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef _MGL_FL_MATHGL_H_
#define _MGL_FL_MATHGL_H_
#ifdef __MWERKS__
# define FL_DLL
#endif
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Scroll.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Counter.H>
#include <FL/Fl_Menu_Bar.H>
#include <mgl2/fltk.h>
class mglCanvas;
//-----------------------------------------------------------------------------
/// Class is FLTK widget which display MathGL graphics
class MGL_EXPORT Fl_MathGL : public Fl_Widget
{
friend class Fl_MGLView;
public:
Fl_Valuator *tet_val; ///< pointer to external tet-angle validator
Fl_Valuator *phi_val; ///< pointer to external phi-angle validator
mglCanvas *gr; ///< Built-in mglCanvas instance (mglCanvasFLTK is used by default)
std::string prim; ///< manual primitives
bool use_pthr; ///< use pthread for update plot
Fl_MathGL(int x, int y, int w, int h, const char *label=0);
virtual ~Fl_MathGL();
/// Set drawing functions and its parameter
inline void set_draw(int (*func)(mglBase *gr, void *par), void *par)
{ if(draw_cl) delete draw_cl; draw_cl=0; draw_func=func; draw_par=par; }
/// Set drawing functions pointed on mglGraph
inline void set_draw(int (*dr)(mglGraph *gr))
{ set_draw(dr?mgl_draw_graph:0,(void*)dr); }
/// Set drawing based on instance of mglDraw class
inline void set_draw(mglDraw *dr) { if(draw_cl) delete draw_cl; draw_cl=dr; draw_func=0; }
/// Update (redraw) plot
virtual void update();
/// Set angles for additional plot rotation
inline void set_angle(mreal t, mreal p){ tet = t; phi = p; }
/// Set bitwise flags for general state (1-Alpha, 2-Light)
inline void set_flag(int f) { flag = f; }
/// Set flags for handling mouse
void set_state(bool z, bool r, bool g=false) { zoom = z; rotate = r; grid = g; }
/// Set zoom in/out region
inline void set_zoom(mreal X1, mreal Y1, mreal X2, mreal Y2)
{ x1 = X1; x2 = X2; y1 = Y1; y2 = Y2; update(); }
/// Get zoom region
inline void get_zoom(mreal *X1, mreal *Y1, mreal *X2, mreal *Y2)
{ *X1 = x1; *X2 = x2; *Y1 = y1; *Y2 = y2; }
/// Set popup menu pointer
inline void set_popup(const Fl_Menu_Item *pmenu, Fl_Widget *wdg, void *v)
{ popup = pmenu; wpar = wdg; vpar = v; }
/// Set grapher object instead of built-in one.
/// NOTE: Fl_MathGL will automatically delete this object
void set_graph(HMGL gr);
/// Set grapher object instead of built-in one.
/// NOTE: Fl_MathGL will automatically delete this object
inline void set_graph(mglGraph *Gr)
{ set_graph(Gr->Self()); }
/// Get pointer to grapher
inline HMGL get_graph() { return (HMGL)gr; }
/// Get mglDraw pointer or NULL
inline mglDraw *get_class()
{ mglDraw *d=0;
if(draw_func==mgl_draw_class) d = (mglDraw*)draw_par;
if(draw_cl) d = draw_cl;
return d; }
/// Show window with warnings after script parsing
inline void set_show_warn(bool s) { show_warn=s; }
/// Ask to stop of script parsing
void stop(bool stop=true);
/// Enable/disable key handling as in mglview (default is false)
inline void set_handle_key(bool val) { handle_keys=true; }
/// Get id of last clicked object
inline int get_last_id() { return last_id; }
void draw_plot(); ///< Single thread drawing itself
/// Check if script is parsing now or not
inline bool running() { return run; }
protected:
void *draw_par; ///< Parameters for drawing function mglCanvasWnd::DrawFunc.
/// Drawing function for window procedure. It should return the number of frames.
int (*draw_func)(mglBase *gr, void *par);
mglDraw *draw_cl;
int last_id; ///< last selected object id
const Fl_Menu_Item *popup; ///< pointer to popup menu items
Fl_Widget *wpar; ///< widget for popup menu
void *vpar; ///< parameter for popup menu
mreal tet,phi; ///< rotation angles
bool rotate; ///< flag for handle mouse
bool zoom; ///< flag for zoom by mouse
bool grid; ///< flag to draw grid and edit prim
bool show_warn; ///< show window with warnings
bool handle_keys;
mreal x1,x2,y1,y2; ///< zoom region
int flag; ///< bitwise flag for general state (1-Alpha, 2-Light)
int x0,y0,xe,ye; ///< mouse position
char pos[128];
bool run; ///< flag that drawing in progress
const unsigned char *img; ///< image for drawing
#if (MGL_HAVE_PTHREAD|MGL_HAVE_PTHR_WIDGET)
pthread_t thr; ///< main thread for drawing
#endif
virtual void draw(); ///< quick drawing function
int handle(int code); ///< handle mouse events
void resize(int x, int y, int w, int h); ///< resize control
};
//-----------------------------------------------------------------------------
class MGL_EXPORT Fl_MGLView : public Fl_Window
{
public:
Fl_MathGL *FMGL; ///< Control which draw graphics
Fl_Scroll *scroll;
Fl_Menu_Bar *menu;
void *par; ///< Parameter for handling animation
void (*next)(void*); ///< Callback function for next frame
void (*prev)(void*); ///< Callback function for prev frame
mreal (*delay)(void*); ///< Callback function for delay
void (*reload)(void*); ///< Callback function for reloading
void toggle_alpha() { toggle(alpha, alpha_bt, _("Graphics/Alpha")); }
void toggle_light() { toggle(light, light_bt, _("Graphics/Light")); }
void toggle_sshow() { toggle(sshow, anim_bt, _("Graphics/Animation/Slideshow")); }
void toggle_grid() { toggle(grid, grid_bt, _("Graphics/Grid")); }
void toggle_zoom() { toggle(zoom, zoom_bt); }
void toggle_rotate(){ toggle(rotate, rotate_bt); }
void setoff_zoom() { setoff(zoom, zoom_bt); }
void setoff_rotate(){ setoff(rotate, rotate_bt); }
bool is_sshow() { return sshow; }
void toggle_pause() { toggle(pauseC, pause_bt, _("Graphics/Pause calc")); exec_pause(); }
void adjust()
{ mgl_set_size(FMGL->get_graph(),scroll->w(),scroll->h()); FMGL->size(scroll->w(),scroll->h()); update(); }
HMGL get_graph() { return FMGL->get_graph(); }
Fl_MGLView(int x, int y, int w, int h, const char *label=0);
virtual ~Fl_MGLView();
void update(); ///< Update picture by calling user drawing function
protected:
Fl_Button *alpha_bt, *light_bt, *rotate_bt, *anim_bt, *zoom_bt, *grid_bt, *pause_bt;
// Fl_Counter *tet, *phi;
int grid, alpha, light; ///< Current states of wire, alpha, light switches (toggle buttons)
int sshow, rotate, zoom;///< Current states of slideshow, rotate, zoom switches (toggle buttons)
int pauseC; ///< Current state of pause for calculations
void toggle(int &val, Fl_Button *b, const char *txt=NULL);
void setoff(int &val, Fl_Button *b, const char *txt=NULL);
void exec_pause();
};
//-----------------------------------------------------------------------------
void MGL_EXPORT mgl_makemenu_fltk(Fl_Menu_ *m, Fl_MGLView *w);
MGL_EXPORT const char *mgl_file_chooser(const char *mess, const char *filter="", bool save=false);
MGL_EXPORT const char *mgl_dir_chooser(const char *mess, const char *path);
//-----------------------------------------------------------------------------
#endif
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