/usr/include/mgl2/canvas_wnd.h is in libmgl-dev 2.3.4-1.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* canvas_wnd.h is part of Math Graphic Library
* Copyright (C) 2007-2014 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_CANVAS_WND_H_
#define _MGL_CANVAS_WND_H_
#include "mgl2/canvas.h"
#include "mgl2/wnd.h"
//-----------------------------------------------------------------------------
/// Base class for windows containing MathGL graphics
class MGL_EXPORT mglCanvasWnd : public mglCanvas
{
public:
mglPoint LastMousePos; ///< Last mouse position
void (*ClickFunc)(void *par); ///< Callback function on click
#if MGL_HAVE_PTHR_WIDGET
pthread_mutex_t *mutex;
#endif
mglCanvasWnd();
virtual ~mglCanvasWnd();
void SetSize(int w,int h,bool clf=true);
void EndFrame();
void SetFrame(long i);
void DelFrame(long i);
const unsigned char *GetBits();
inline int GetNumFig() const { return NumFig; }
inline int GetCurFig() const { return CurFig; }
void SetCurFig(int c);
void ResetFrames();
inline mglPoint GetMousePos() const { return LastMousePos;}
inline void SetMousePos(mglPoint p) { LastMousePos=p; }
inline void Setup(bool clf_upd=true, bool showpos=false)
{ set(showpos,MGL_SHOW_POS); set(clf_upd,MGL_CLF_ON_UPD);
if(!clf_upd) ResetFrames(); }
virtual void ToggleAlpha()=0; ///< Switch on/off transparency (do not overwrite user settings)
virtual void ToggleLight()=0; ///< Switch on/off lighting (do not overwrite user settings)
virtual void ToggleZoom()=0; ///< Switch on/off zooming by mouse
virtual void ToggleRotate()=0; ///< Switch on/off rotation by mouse
virtual void ToggleNo()=0; ///< Switch off all zooming and rotation
virtual void Update()=0; ///< Update picture by calling user drawing function
virtual void Adjust()=0; ///< Adjust size of bitmap to window size
virtual void GotoFrame(int d)=0;///< Show arbitrary frame (use relative step)
virtual void NextFrame() {GotoFrame(+1);} ///< Show next frame (if one)
virtual void PrevFrame() {GotoFrame(-1);} ///< Show previous frame (if one)
virtual void Animation()=0; ///< Run slideshow (animation) of frames
void ReLoad(); ///< Reload user data and update picture
/// Create a window for plotting based on callback function (can be NULL).
virtual void Window(int argc, char **argv, int (*draw)(mglBase *gr, void *p),
const char *title, void *par=NULL,
void (*reload)(void *p)=NULL, bool maximize=false)=0;
void SetDrawFunc(int (*draw)(mglBase *gr, void *p), void *par=NULL, void (*reload)(void *p)=NULL);
private:
int CurFig; ///< Current figure in the list.
unsigned char *GG; ///< images for all frames (may be too LARGE !!!)
int NumFig; ///< Number of figures in the list. If 0 then no list and mglCanvas::DrawFunc will called for each drawing.
void (*LoadFunc)(void *par);
void *FuncPar; ///< Parameters for drawing function mglCanvas::DrawFunc.
/// Drawing function for window procedure. It should return the number of frames.
int (*DrawFunc)(mglBase *gr, void *par);
};
//-----------------------------------------------------------------------------
#endif
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