From: Dimitrios Eftaxiopoulos <eftaxi12@otenet.gr>
Date: Tue, 27 Jan 2015 13:54:34 +0000 (+0200)
Subject: Merge tag 'upstream/2.3.1' into experimental
X-Git-Tag: archive/raspbian/2.5-2+rpi1^2~117
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=60ca4b7ec04e0f52ed7e6901168820fa99626788;p=mathgl.git

Merge tag 'upstream/2.3.1' into experimental

Upstream version 2.3.1

Conflicts:
	widgets/qt.cpp
---

60ca4b7ec04e0f52ed7e6901168820fa99626788
diff --cc widgets/qt.cpp.orig
index 0000000,0000000..3c0d741
new file mode 100644
--- /dev/null
+++ b/widgets/qt.cpp.orig
@@@ -1,0 -1,0 +1,1295 @@@
++/***************************************************************************
++ * qt.cpp 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.             *
++ ***************************************************************************/
++#include <QTimer>
++#include <QApplication>
++#include <QMouseEvent>
++#include <QMessageBox>
++#include <QMenu>
++#include <QClipboard>
++#include <QTextEdit>
++#include <QPainter>
++#include <QCursor>
++#include <QImage>
++#include <QScrollArea>
++#include <QMainWindow>
++#include <QToolBar>
++#include <QMenuBar>
++#include <QSpinBox>
++#include <QPrinter>
++#include <QPrintDialog>
++#include <QFileDialog>
++#include <QInputDialog>
++#include <QThread>
++#include <limits.h>
++
++#include "mgl2/canvas_wnd.h"
++#include "mgl2/qmathgl.h"
++#include "mgl2/qt.h"
++//-----------------------------------------------------------------------------
++#define MGL_MAX_LINES	(INT_MAX-1000)
++#if !defined(WIN32) && !defined(__APPLE__)
++#include <X11/Xlib.h>
++<<<<<<< HEAD
++//#include <qt5/QtCore/QTimer>
++=======
++>>>>>>> upstream/2.3.1
++#endif
++//-----------------------------------------------------------------------------
++/// Base class for windows containing MathGL graphics
++class mglCanvasQT : public mglCanvasWnd
++{
++public:
++using mglCanvasWnd::Window;
++	int sshow;		///< Current state of animation switch (toggle button)
++	QMathGL *QMGL;	///< Control which draw graphics
++	QMainWindow *Wnd;	///< Pointer to window
++
++	mglCanvasQT();
++    virtual ~mglCanvasQT() {	if(Wnd)	delete Wnd;	}
++
++	/// Create a window for plotting. Now implemeted only for GLUT.
++	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);
++	/// Switch on/off transparency (do not overwrite switches in user drawing function)
++	void ToggleAlpha();
++	/// Switch on/off lighting (do not overwrite switches in user drawing function)
++	void ToggleLight();
++	void ToggleRotate();///< Switch on/off rotation by mouse
++	void ToggleZoom();	///< Switch on/off zooming by mouse
++	void ToggleNo();	///< Switch off all zooming and rotation
++	void Update();		///< Update picture by calling user drawing function
++	void Adjust();		///< Adjust size of bitmap to window size
++	void GotoFrame(int d);	///< Show arbitrary frame (use relative step)
++	void Animation();		///< Run slideshow (animation) of frames
++
++protected:
++	QScrollArea *scroll;	///< Scrolling area
++	QMenu *popup;			///< Popup menu
++	QSpinBox *tet, *phi;	///< Spin box for angles
++};
++//-----------------------------------------------------------------------------
++void MGL_EXPORT mgl_ask_qt(const wchar_t *quest, wchar_t *res)
++{	QInputDialog::getText(QApplication::activeWindow(), "MathGL",
++						QString::fromWCharArray(quest)).toWCharArray(res);	}
++//-----------------------------------------------------------------------------
++//
++//		class QMathGL
++//
++//-----------------------------------------------------------------------------
++/// Internal class to be used for multi-threading plotting
++/*class mglTask : public QObject
++{
++	Q_OBJECT
++public:
++	mglCanvas *gr;		///< Built-in mglCanvasQT-er instance (used by default)
++	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;		///< Class for drawing -- need to call directly due to inheritance mechanism
++public slots:
++	void doWork();
++signals:
++	void plotDone();
++};
++//-----------------------------------------------------------------------------
++void mglTask::doWork()
++{
++	setlocale(LC_NUMERIC, "C");
++	if(mgl_is_frames(gr))	mgl_new_frame(gr);
++	if(draw_func)	draw_func(gr, draw_par);
++	else if(draw)	{	mglGraph g(gr);	draw->Draw(&g);	}
++	if(mgl_is_frames(gr))	mgl_end_frame(gr);
++	setlocale(LC_NUMERIC, "");
++	gr->Finish();
++	emit plotDone();
++}*/
++//-----------------------------------------------------------------------------
++QMathGL::QMathGL(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f)
++{
++	autoResize = false;	draw_par = 0;	draw_func = 0;
++	dotsRefr = true;
++	gr = new mglCanvas;	appName = "MathGL";
++	popup = 0;	grBuf = 0;	draw = 0;
++	phi = tet = per = 0;
++	x1 = y1 = ax1 = ay1 = 0;	x2 = y2 = ax2 = ay2 = 1;
++	alpha = light = zoom = rotate = grid = viewYZ = custZoom = custDraw = false;
++	resize(600, 400);	mgl_set_flag(gr, true, MGL_CLF_ON_UPD);
++	timer = new QTimer(this);
++	timerRefr = new QTimer(this);	timerRefr->setInterval(100);
++	timerRefr->setSingleShot(true);
++	enableWheel = enableMouse = true;
++	connect(timer, SIGNAL(timeout()), this, SLOT(nextSlide()));
++	connect(timerRefr, SIGNAL(timeout()), this, SLOT(refreshHQ()));
++
++/*	thread = new QThread();
++	task = new mglTask();	task->moveToThread(thread);
++	connect(thread, SIGNAL(started()), task, SLOT(doWork()));
++	connect(task, SIGNAL(plotDone()), thread, SLOT(quit()));
++	connect(thread, SIGNAL(finished()), this, SLOT(afterPlot()));*/
++}
++//-----------------------------------------------------------------------------
++QMathGL::~QMathGL()
++{
++	timer->stop();	timerRefr->stop();
++	if(mgl_use_graph(gr,-1)<1)	mgl_delete_graph(gr);
++	if(grBuf)	delete []grBuf;
++	if(draw)	delete draw;
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setDotsPreview(bool d)
++{	dotsRefr = d;	}
++//-----------------------------------------------------------------------------
++void QMathGL::setDraw(int (*func)(mglBase *gr, void *par), void *par)
++{
++	if(draw)	delete draw;	draw = 0;
++	draw_func = func;	draw_par = par;
++	emit usePrimChanged(draw_func || draw);
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setDraw(mglDraw *dr)
++{
++	if(draw)	delete draw;
++	draw = dr;	draw_func = 0;
++	emit usePrimChanged(draw_func || draw);
++}
++//-----------------------------------------------------------------------------
++double QMathGL::getRatio()	{	return double(mgl_get_width(gr))/mgl_get_height(gr);	}
++void mgl_qt_event_func(void *)	{	QApplication::processEvents();	}
++//-----------------------------------------------------------------------------
++void QMathGL::setGraph(HMGL GR)	///< Set grapher object
++{
++	mglCanvas *gg = dynamic_cast<mglCanvas *>(GR);
++	if(!gg)	return;
++	if(mgl_use_graph(gr,-1)<1)	mgl_delete_graph(gr);
++	gr=gg;	mgl_use_graph(gg,1);
++	gr->SetEventFunc(mgl_qt_event_func, NULL);
++}
++//-----------------------------------------------------------------------------
++void QMathGL::paintEvent(QPaintEvent *)
++{
++	QPainter paint;
++	paint.begin(this);
++	paint.drawPixmap(0,0,pic);
++	if(zoom)	paint.drawRect(x0,y0,xe-x0,ye-y0);
++	if(mgl_get_flag(gr,MGL_SHOW_POS) && !mousePos.isEmpty())
++		paint.drawText(0,12,mousePos);
++	if(grid)
++	{
++		long i, d, h=pic.height(), w=pic.width();
++		paint.setPen(QColor(192,192,192));
++		for(i=1;i<10;i++)
++		{
++			paint.drawText(0,i*h/10,QString::number(1-i*0.1));
++			paint.drawLine(0,i*h/10,w,i*h/10);
++			paint.drawText(i*w/10,h,QString::number(i*0.1));
++			paint.drawLine(i*w/10,0,i*w/10,h);
++		}
++		paint.setPen(QColor(0,0,0));
++		d = (h>w?w:h)/100;
++		if(mgl_is_frames(gr))
++			for(i=0;i<(long)gr->Act.size();i++)
++			{
++				const mglActivePos &p=gr->Act[i];
++				QRect rf(p.x-d/2,p.y-d/2-1,d,d);
++				paint.drawRect(rf);
++				paint.fillRect(rf,QBrush(QColor(127,255,63)));
++			}
++	}
++	paint.end();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::resizeEvent(QResizeEvent *ev)
++{
++	if(autoResize && ev->size().width()>0 && ev->size().height()>0)
++	{	mgl_set_size(gr, ev->size().width(), ev->size().height());	update();	}
++//	else	resize(graph->GetWidth(), graph->GetHeight());
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setPer(int p)
++{
++	if(per!=p && p>=0 && p<100)
++	{	per = 100*p;	emit perChanged(p);	refresh();	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setPhi(int p)
++{	if(phi!=p)	{	phi = p;	emit phiChanged(p);	refresh();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setTet(int t)
++{	if(tet!=t)	{	tet = t;	emit tetChanged(t);	refresh();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setAlpha(bool a)
++{	if(alpha!=a)	{	alpha = a;	emit alphaChanged(a);	update();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setLight(bool l)
++{	if(light!=l)	{	light = l;	emit lightChanged(l);	update();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setGrid(bool g)
++{	if(grid!=g)	{	grid = g;	emit gridChanged(g); 	refresh();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setViewYZ(bool a)
++{	if(viewYZ!=a)	{	viewYZ = a;	emit viewYZChanged(a);	refresh();	}	}
++//-----------------------------------------------------------------------------
++void QMathGL::setRotate(bool r)
++{
++	if(rotate!=r)
++	{	zoom=false;	rotate=r;	refresh();	emit rotateChanged(r);	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setZoom(bool z)
++{
++	if(zoom!=z)
++	{	zoom=z;	rotate=false;	refresh();
++	emit zoomChanged(z);	emit rotateChanged(false);	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setCustZoom(bool z)	{	custZoom = z;	}
++//-----------------------------------------------------------------------------
++void QMathGL::setCustDraw(bool z)	{	custDraw = z;	}
++//-----------------------------------------------------------------------------
++void QMathGL::shiftDown()
++{	mreal d=(y2-y1)/4;	y1+=d;	y2+=d;	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::shiftUp()
++{	mreal d=(y2-y1)/4;	y1-=d;	y2-=d;	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::shiftRight()
++{	mreal d=(x2-x1)/4;	x1-=d;	x2-=d;	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::shiftLeft()
++{	mreal d=(x2-x1)/4;	x1+=d;	x2+=d;	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::zoomIn()
++{
++	mreal d,c;
++	d = (y2-y1)/4;	c = (y2+y1)/2;	y1 = c-d;	y2 = c+d;
++	d = (x2-x1)/4;	c = (x2+x1)/2;	x1 = c-d;	x2 = c+d;
++	refresh();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::zoomOut()
++{
++	mreal d,c;
++	d = (y2-y1);	c = (y2+y1)/2;	y1 = c-d;	y2 = c+d;
++	d = (x2-x1);	c = (x2+x1)/2;	x1 = c-d;	x2 = c+d;
++	refresh();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::restore()
++{
++	setPhi(0);	setTet(0);	setPer(0);
++	x1=y1=0; 	x2=y2=1;		zoom=rotate=false;
++	emit zoomChanged(false);	emit rotateChanged(false);
++	if(ax1!=0 || ay1!=0 || ax2!=1 || ay2!=1)
++	{
++		ax1=ay1=0;		ax2=ay2=1;
++		mgl_zoom_axis(gr,0,0,0,0,1,1,1,1);
++		update();
++	}
++	else refresh();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::stop()	{	gr->AskStop(true);	}
++//-----------------------------------------------------------------------------
++void QMathGL::update()
++{
++	if(draw_func || draw)
++	{
++		mgl_reset_frames(gr);	// remove previous frames
++		if(mgl_get_flag(gr,MGL_CLF_ON_UPD))	mgl_set_def_param(gr);
++		mgl_set_alpha(gr,alpha);	mgl_set_light(gr,light);
++		// use frames for quickly redrawing while adding/changing primitives
++		if(custDraw)	emit customDraw(x1,y1,x2,y2,true);
++
++		if(!isHidden())	QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
++/*		task->gr = gr;	task->draw = draw;
++		task->draw_func = draw_func;
++		task->draw_par = draw_par;
++		thread->start();*/
++		setlocale(LC_NUMERIC, "C");
++		if(mgl_is_frames(gr))	mgl_new_frame(gr);
++		if(draw_func)	draw_func(gr, draw_par);
++		else if(draw)	{	mglGraph g(gr);	draw->Draw(&g);	}
++		if(mgl_is_frames(gr))	mgl_end_frame(gr);
++		setlocale(LC_NUMERIC, "");
++		gr->AskStop(false);	afterPlot();
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::afterPlot()
++{
++	emit refreshData();
++	emit showWarn(mgl_get_mess(gr));
++	mousePos="";
++	if(!isHidden())	QApplication::restoreOverrideCursor();
++	refresh();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::drawPrim()
++{
++//	mgl_clf_nfog(gr);
++	mglCanvasWnd *g = dynamic_cast<mglCanvasWnd *>(gr);
++	mgl_get_frame(gr, g?g->GetCurFig():mgl_get_num_frame(gr)-1);
++	mglParse pr;
++	long i, n=primitives.count('\n');
++	mglGraph gg(gr);
++	setlocale(LC_NUMERIC, "C");
++	gg.Push();	gg.SubPlot(1,1,0,"#");
++	mglPoint ox1=gr->Min, ox2=gr->Max;
++	gg.SetRanges(mglPoint(-1,-1,-1),mglPoint(1,1,1));
++	for(i=0;i<n;i++)
++	{
++		mgl_set_obj_id(gr,i+MGL_MAX_LINES);
++		QString tst = primitives.section('\n',i,i);
++		pr.Parse(&gg,primitives.section('\n',i,i).toStdString().c_str(),i+MGL_MAX_LINES);
++	}
++	gg.SetRanges(ox1,ox2);	gg.Pop();	setlocale(LC_NUMERIC, "");
++}
++//-----------------------------------------------------------------------------
++void QMathGL::refresh()
++{
++	if(dotsRefr)
++	{
++		timerRefr->start();
++		int q = gr->GetQuality();
++		prevQuality = q!=MGL_DRAW_DOTS?q:prevQuality;
++		gr->SetQuality(MGL_DRAW_DOTS);
++	}
++	if(mgl_is_frames(gr) && mgl_get_num_frame(gr)>0)
++	{
++		drawPrim();
++		if(custZoom)	emit customZoom(x1,y1,x2,y2,tet,phi,per);
++		else
++		{	mgl_zoom(gr,x1,y1,x2,y2);
++			mgl_ask_perspective(gr,per);
++			if(viewYZ)	mgl_view(gr,0,-tet,-phi);
++			else 		mgl_view(gr,-phi,-tet,0);
++		}
++	}
++	mglConvertFromGraph(pic, gr, &grBuf);
++	if(pic.size()!=size())	setSize(pic.width(), pic.height());
++	repaint();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::refreshHQ()
++{
++	gr->SetQuality(prevQuality);
++	if(mgl_is_frames(gr) && mgl_get_num_frame(gr)>0)
++	{
++		drawPrim();
++		if(custZoom)	emit customZoom(x1,y1,x2,y2,tet,phi,per);
++		else
++		{	mgl_zoom(gr,x1,y1,x2,y2);
++			mgl_ask_perspective(gr,per);
++			if(viewYZ)	mgl_view(gr,0,-tet,-phi);
++			else 		mgl_view(gr,-phi,-tet,0);
++		}
++	}
++	mglConvertFromGraph(pic, gr, &grBuf);
++	if(pic.size()!=size())	setSize(pic.width(), pic.height());
++	repaint();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::mousePressEvent(QMouseEvent *ev)
++{
++	if(!zoom && !rotate && ev->button()&Qt::LeftButton)
++	{
++		mglPoint p = gr->CalcXYZ(ev->x(), ev->y());
++		mglCanvasWnd *g=dynamic_cast<mglCanvasWnd *>(gr);
++		if(g)	g->LastMousePos = p;
++		if(g && g->ClickFunc)	g->ClickFunc(draw_par);
++		emit mouseClick(p.x,p.y,p.z);
++		int id = mgl_get_obj_id(gr,ev->x(),ev->y());
++		if(id<MGL_MAX_LINES)	emit objChanged(id-1);
++
++		p = gr->CalcXYZ(ev->x(), ev->y(), true);
++		if(mgl_isnan(p.x))	mousePos = "";
++		else	mousePos.sprintf("x=%g, y=%g, z=%g",p.x,p.y,p.z);
++		emit posChanged(mousePos);
++		repaint();
++	}
++	xe=x0=ev->x();	ye=y0=ev->y();	ev->accept();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::mouseReleaseEvent(QMouseEvent *ev)
++{
++	if(ev->button()&Qt::LeftButton && enableMouse)
++	{
++		if(zoom)
++		{
++			int w1=width(),h1=height();
++			mreal _x1,_x2,_y1,_y2;
++			_x1 = x1+(x2-x1)*(x0-x())/mreal(w1);	_y1 = y2-(y2-y1)*(ye-y())/mreal(h1);
++			_x2 = x1+(x2-x1)*(xe-x())/mreal(w1);	_y2 = y2-(y2-y1)*(y0-y())/mreal(h1);
++			x1=_x1;		x2=_x2;		y1=_y1;		y2=_y2;
++			if(x1>x2)	{	_x1=x1;	x1=x2;	x2=_x1;	}
++			if(y1>y2)	{	_x1=y1;	y1=y2;	y2=_x1;	}
++			x0 = xe;	y0 = ye;
++			if(custDraw)
++			{
++				emit customDraw(x1,y1,x2,y2,false);
++				update();
++			}
++			else	refresh();
++		}
++	}
++	if(ev->button()&Qt::RightButton && popup && !rotate)	// popup menu
++		popup->popup(QCursor::pos());
++	ev->accept();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::mouseMoveEvent(QMouseEvent *ev)
++{
++	if(!enableMouse)	{	ev->ignore();	return;	}
++	xe=ev->x();	ye=ev->y();
++	if(rotate)
++	{
++		if(ev->buttons()&Qt::LeftButton)	// rotate
++		{
++			mreal ff = 240/sqrt(mreal(width()*height()));
++			phi += int((x0-xe)*ff);
++			tet -= int((y0-ye)*ff);
++			if(phi>180)	phi-=360;		if(phi<-180)	phi+=360;
++			if(tet>180)	tet-=360;		if(tet<-180)	tet+=360;
++			emit tetChanged(int(tet));		emit phiChanged(int(phi));
++			refresh();
++		}
++		if(ev->buttons()&Qt::RightButton)	// zoom and perspective
++		{
++			mreal ff = 2.*(y0-ye)/width(), gg = 0.5*(xe-x0)/height();
++			mreal cx = (x1+x2)/2, cy = (y1+y2)/2;
++			x1 = cx+(x1-cx)*exp(-ff);	x2 = cx+(x2-cx)*exp(-ff);
++			y1 = cy+(y1-cy)*exp(-ff);	y2 = cy+(y2-cy)*exp(-ff);
++			per = per + gg;
++			if(per<0)	per = 0;	if(per>=1)	per = 0.9999;
++			if(gg)	emit perChanged(int(per));
++			refresh();
++		}
++		if(ev->buttons()&Qt::MidButton)	// shift
++		{
++			mreal ff = 1./sqrt(mreal(width()*height()));
++			mreal dx = (x0-xe)*ff*(x2-x1), dy = (y0-ye)*ff*(y2-y1);
++			x1 += dx;	x2 += dx;	y1 -= dy;	y2 -= dy;
++		}
++		x0 = xe;	y0 = ye;
++		refresh();
++	}
++	else if(zoom)	refresh();
++	else if(ev->buttons()&Qt::MidButton)	// shift axis
++	{
++		mreal ff = 1./sqrt(mreal(width()*height()));
++		mreal dx = (x0-xe)*ff*(ax2-ax1), dy = (y0-ye)*ff*(ay2-ay1);
++		ax1 += dx;	ax2 += dx;	ay1 -= dy;	ay2 -= dy;
++		mgl_zoom_axis(gr,ax1,ay1,0,0,ax2,ay2,0,0);
++		update();	x0 = xe;	y0 = ye;
++	}
++	else if(ev->buttons()&Qt::LeftButton)	// move primitives
++	{
++		long h=pic.height(), w=pic.width(), d=(h>w?w:h)/100;
++		long pos = mgl_is_active(gr,x0,y0,d);
++		long id = long(mgl_get_obj_id(gr,x0,y0))-MGL_MAX_LINES;
++		if(grid && pos>=0)	// this active point
++		{
++			const mglActivePos &p = gr->Act[pos];
++			id = long(p.id)-MGL_MAX_LINES;
++			if(id>=0)	// this is our primitive
++			{
++				// try "attract" mouse
++				register size_t i;
++				register int tt;
++				for(i=0;i<=10;i++)
++				{
++					tt = i*(w/10);	if(abs(xe-tt)<2*d)	xe = tt;
++					tt = i*(h/10);	if(abs(ye-tt)<2*d)	ye = tt;
++				}
++				for(i=0;i<gr->Act.size();i++)
++				{
++					const mglActivePos &q = gr->Act[i];
++					if(abs(xe-q.x)<2*d && abs(ye-q.y)<2*d)	{	xe=q.x;	ye=q.y;	}
++				}
++				// now move point
++				QString tst = primitives.section('\n',id,id), cmd=tst.section(' ',0,0), res;
++				float dx = 2*(xe-x0)/float(w), dy = 2*(y0-ye)/float(h);
++				float xx=tst.section(' ',1,1).toFloat(), yy=tst.section(' ',2,2).toFloat();
++				if(p.n==0)
++					res = cmd+" "+QString::number(xx+dx)+" "+QString::number(yy+dy)+" "+tst.section(' ',3);
++				else if(cmd=="rect")
++				{
++					float x_=tst.section(' ',3,3).toFloat(), y_=tst.section(' ',4,4).toFloat();
++					if(p.n==1)	{	xx+=dx;	y_+=dy;	}
++					if(p.n==2)	{	x_+=dx;	yy+=dy;	}
++					if(p.n==3)	{	x_+=dx;	y_+=dy;	}
++					res = "rect "+QString::number(xx)+" "+QString::number(yy)+" "+
++						QString::number(x_)+" "+QString::number(y_)+" "+tst.section(' ',5);
++				}
++				else if(p.n==1)
++				{
++					xx=tst.section(' ',3,3).toFloat();	yy=tst.section(' ',4,4).toFloat();
++					res = tst.section(' ',0,2)+" "+QString::number(xx+dx)+" "+QString::number(yy+dy)+" "+tst.section(' ',5);
++				}
++				else if(cmd=="rhomb" || cmd=="ellipse")
++				{
++					float x_=tst.section(' ',3,3).toFloat()-xx, y_=tst.section(' ',4,4).toFloat()-yy, dr=0;
++					if(x_*x_+y_*y_>0)
++					{
++						dr = (dx*x_+dy*y_)/(x_*x_+y_*y_);
++						dr = hypot(dx-dr*x_,dy-dr*y_);
++					}
++					else	dr = hypot(dx,dy);
++					res = tst.section(' ',0,4)+" "+QString::number(tst.section(' ',5,5).toFloat()+dr)+" "+tst.section(' ',6);
++				}
++				else if(cmd=="arc")
++				{
++					double x_=tst.section(' ',3,3).toFloat()-xx, y_=tst.section(' ',4,4).toFloat()-yy, a_=tst.section(' ',5,5).toFloat();
++					double c=cos(M_PI*a_/180), s=sin(M_PI*a_/180);
++					double a = atan2(x_,y_) - atan2(x_*c-y_*s+dx,x_*s+y_*c+dy);
++					res = tst.section(' ',0,4)+" "+QString::number(a*180/M_PI)+" "+tst.section(' ',6);
++				}
++				else if(p.n==2)
++				{
++					xx=tst.section(' ',5,5).toFloat();	yy=tst.section(' ',6,6).toFloat();
++					res = tst.section(' ',0,4)+" "+QString::number(xx+dx)+" "+QString::number(yy+dy)+" "+tst.section(' ',7);
++				}
++				else if(p.n==3)
++				{
++					xx=tst.section(' ',7,7).toFloat();	yy=tst.section(' ',8,8).toFloat();
++					if(cmd=="curve")	{	dx*=-1;	dy*=-1;	}
++					res = tst.section(' ',0,6)+" "+QString::number(xx+dx)+" "+QString::number(yy+dy)+" "+tst.section(' ',9);
++				}
++				if(id>0) 	res = primitives.section('\n',0,id-1) + "\n" + res;
++				primitives = res + "\n" + primitives.section('\n',id+1);
++				refresh();	x0 = xe;	y0 = ye;
++			}
++		}
++		else if(id>=0)	// this is primitive
++		{
++			QString tst = primitives.section('\n',id,id), cmd=tst.section(' ',0,0), res;
++			float dx = 2*(xe-x0)/float(w), dy = 2*(y0-ye)/float(h);
++			float x1=tst.section(' ',1,1).toFloat(), y1=tst.section(' ',2,2).toFloat(),x2,y2;
++			if(cmd=="ball")
++				res = cmd+" "+QString::number(x1+dx)+" "+QString::number(y1+dy)+" "+tst.section(' ',3);
++			else if(cmd=="curve")
++			{
++				x2=tst.section(' ',5,5).toFloat();	y2=tst.section(' ',6,6).toFloat();
++				res = cmd+" "+QString::number(x1+dx)+" "+QString::number(y1+dy)+" "+tst.section(' ',3,4)+
++						" "+QString::number(x2+dx)+" "+QString::number(y2+dy)+" "+tst.section(' ',7);
++			}
++			else
++			{
++				x2=tst.section(' ',3,3).toFloat();	y2=tst.section(' ',4,4).toFloat();
++				res = cmd+" "+QString::number(x1+dx)+" "+QString::number(y1+dy)+" "+
++						QString::number(x2+dx)+" "+QString::number(y2+dy)+" "+tst.section(' ',5);
++			}
++			if(id>0) 	res = primitives.section('\n',0,id-1) + "\n" + res;
++			primitives = res + "\n" + primitives.section('\n',id+1);
++			refresh();	x0 = xe;	y0 = ye;
++		}
++	}
++	ev->accept();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::mouseDoubleClickEvent(QMouseEvent *ev)
++{
++	long h=pic.height(), w=pic.width(), d=(h>w?w:h)/100;
++	long pos = mgl_is_active(gr,x0,y0,d);
++	long id = long(mgl_get_obj_id(gr,x0,y0));
++	if(grid && pos>=0)	// this active point -> delete primitive
++	{
++		const mglActivePos &p = gr->Act[pos];
++		id = long(p.id)-MGL_MAX_LINES;
++		QString res;
++		if(id>0) 	res = primitives.section('\n',0,id-1) + "\n";
++		if(id>=0)	primitives = res + primitives.section('\n',id+1);
++		refresh();	x0 = xe;	y0 = ye;
++	}
++	else if(id>=MGL_MAX_LINES)	// option for primitives
++		emit askStyle(id-MGL_MAX_LINES);
++	else	emit doubleClick(id);
++	ev->accept();
++}
++//-----------------------------------------------------------------------------
++void QMathGL::setStyle(int id, QString stl)
++{
++	QString tst = primitives.section('\n',id,id), res;
++	res = tst.section(' ',0,-2) + " " + stl;
++	if(id>0) 	res = primitives.section('\n',0,id-1) + "\n" + res;
++	primitives = res + "\n" + primitives.section('\n',id+1);
++	refresh();	x0 = xe;	y0 = ye;
++}
++//-----------------------------------------------------------------------------
++void QMathGL::wheelEvent(QWheelEvent *ev)
++{
++	if(!enableWheel)	{	ev->ignore();	return;	}
++	if(rotate)	// zoom
++	{
++		mreal d,c,f=exp(0.001*ev->delta())/2;
++		d = (y2-y1)*f;	c = (y2+y1)/2;	y1 = c-d;	y2 = c+d;
++		d = (x2-x1)*f;	c = (x2+x1)/2;	x1 = c-d;	x2 = c+d;
++		refresh();	ev->accept();
++	}
++	else 		// zoom axis
++	{
++		mreal d,c,f=exp(0.001*ev->delta())/2;
++		d = (ay2-ay1)*f;	c = (ay2+ay1)/2;	ay1 = c-d;	ay2 = c+d;
++		d = (ax2-ax1)*f;	c = (ax2+ax1)/2;	ax1 = c-d;	ax2 = c+d;
++		mgl_zoom_axis(gr,ax1,ay1,0,0,ax2,ay2,0,0);
++		update();	ev->accept();
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::imgSize(int w, int h)
++{	if(w>0 && h>0)	{	mgl_set_size(gr,w,h);	update();	}	}
++//-----------------------------------------------------------------------------
++QString setExtension(QString &fname, const char *ext)
++{
++	QString oname;
++	if(fname.right(4)!="."+QString(ext))	oname = fname+"."+QString(ext);
++	return oname;
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportGIF(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else	mgl_write_gif(gr,setExtension(fname,"png").toStdString().c_str(), appName.toStdString().c_str());
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportPNG(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else	mgl_write_png(gr,setExtension(fname,"png").toStdString().c_str(), appName.toStdString().c_str());
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportPNGs(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else	mgl_write_png_solid(gr,setExtension(fname,"png").toStdString().c_str(), appName.toStdString().c_str());
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportJPG(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else	mgl_write_jpg(gr,setExtension(fname,"jpg").toStdString().c_str(), appName.toStdString().c_str());
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportBPS(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_bps(gr,setExtension(fname,"eps").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportEPS(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_eps(gr,setExtension(fname,"eps").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportSVG(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_svg(gr,setExtension(fname,"svg").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportXYZ(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_xyz(gr,setExtension(fname,"xyz").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportTEX(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_tex(gr,setExtension(fname,"tex").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportOFF(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_off(gr,setExtension(fname,"off").toStdString().c_str(), appName.toStdString().c_str(),0);
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportOBJ(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_obj(gr,setExtension(fname,"obj").toStdString().c_str(), appName.toStdString().c_str(),1);
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportSTL(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_stl(gr,setExtension(fname,"stl").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++/*void QMathGL::exportX3D(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_x3d(gr,setExtension(fname,"x3d").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}*/
++//-----------------------------------------------------------------------------
++void QMathGL::exportTGA(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_tga(gr,setExtension(fname,"tga").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportPRC(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_write_prc(gr,setExtension(fname,"prc").toStdString().c_str(), appName.toStdString().c_str(),1);
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::exportMGLD(QString fname)
++{
++	if(fname.isEmpty())	fname = mgl_get_plotid(gr);
++	if(fname.isEmpty())	QMessageBox::critical(this, appName, tr("No filename."),QMessageBox::Ok,0,0);
++	else
++	{
++		setlocale(LC_NUMERIC, "C");
++		mgl_export_mgld(gr,setExtension(fname,"mgld").toStdString().c_str(), appName.toStdString().c_str());
++		setlocale(LC_NUMERIC, "");
++	}
++}
++//-----------------------------------------------------------------------------
++void mglConvertFromGraph(QPixmap &pic, mglCanvas *gr, uchar **buf)
++{
++	const uchar *bb = mgl_get_rgb(gr);
++	register long i,w=mgl_get_width(gr), h=mgl_get_height(gr);
++	if(*buf)	delete [](*buf);
++	*buf = new uchar[4*w*h];
++	for(i=0;i<w*h;i++)
++	{
++		(*buf)[4*i]   = bb[3*i+2];
++		(*buf)[4*i+1] = bb[3*i+1];
++		(*buf)[4*i+2] = bb[3*i];
++		(*buf)[4*i+3] = 255;
++	}
++	QImage img(*buf, w, h, QImage::Format_RGB32);
++	pic = QPixmap::fromImage(img);
++}
++//-----------------------------------------------------------------------------
++void QMathGL::copy()
++{	QClipboard *cb = QApplication::clipboard();
++	cb->setPixmap(pic, QClipboard::Clipboard);		}
++//-----------------------------------------------------------------------------
++void QMathGL::copyClickCoor()
++{	QApplication::clipboard()->setText(mousePos);	}
++//-----------------------------------------------------------------------------
++void QMathGL::setMGLFont(QString path)
++{	if(path.isEmpty())	mgl_restore_font(gr);
++	else 	mgl_load_font(gr,path.toStdString().c_str(),0);	}
++//-----------------------------------------------------------------------------
++void QMathGL::setSize(int w, int h)
++{
++	resize(w, h);
++	if(w!=pic.width() || h!=pic.height())	// update only when image size is changed
++	{	mgl_set_size(gr,w,h);	update();	}
++}
++//-----------------------------------------------------------------------------
++void QMathGL::about()
++{
++	QString s = tr("MathGL v. 2.") + QString::number(MGL_VER2) + tr("\n(c) Alexey Balakin, 2007\nhttp://mathgl.sourceforge.net/");
++	QMessageBox::about(this, tr("MathGL - about"), s);
++}
++//-----------------------------------------------------------------------------
++void QMathGL::aboutQt()	{	QMessageBox::aboutQt(this, tr("About Qt"));	}
++//-----------------------------------------------------------------------------
++void QMathGL::print()
++{
++	QPrinter *printer = new QPrinter;
++	printer->setOrientation(getRatio()>1 ? QPrinter::Landscape : QPrinter::Portrait);
++	QPrintDialog printDlg(printer, this);
++	if (printDlg.exec() == QDialog::Accepted)
++	{
++		QRectF r = printer->pageRect(QPrinter::Inch);
++		int d1 = int(pic.width()/r.width()), d2 = int(pic.height()/r.height());
++		int dpi = printer->resolution();
++		if(dpi<d1)	dpi=d1;		if(dpi<d2)	dpi=d2;
++		printer->setResolution(dpi);
++
++		QPainter p;
++		if(!p.begin(printer))	return;	// paint on printer
++		p.drawPixmap(0,0,pic);
++	}
++	delete printer;
++}
++//-----------------------------------------------------------------------------
++void QMathGL::nextSlide()
++{
++	mglCanvasWnd *g = dynamic_cast<mglCanvasWnd *>(gr);
++	if(g && g->GetNumFig()>1)	g->NextFrame();
++	emit frameChanged(+1);
++}
++void QMathGL::prevSlide()
++{
++	mglCanvasWnd *g = dynamic_cast<mglCanvasWnd *>(gr);
++	if(g && g->GetNumFig()>1)	g->PrevFrame();
++	emit frameChanged(-1);
++}
++//-----------------------------------------------------------------------------
++void QMathGL::animation(bool st)
++{
++	if(st)	timer->stop();
++	else	timer->start(int(mgl_wnd_get_delay(gr)*1000));
++}
++//-----------------------------------------------------------------------------
++void QMathGL::adjust()
++{
++	mgl_set_size(gr, parentWidget()->width()-3, parentWidget()->height()-3);
++	setSize(parentWidget()->width()-3, parentWidget()->height()-3);
++	update();	// TODO replace to refresh ?!?
++}
++//-----------------------------------------------------------------------------
++void QMathGL::addMark()
++{	primitives += "ball 0 0 'r*'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addLine()
++{	primitives += "line -0.2 0 0.2 0 'r2'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addRect()
++{	primitives += "rect -0.2 -0.2 0.2 0.2 'r'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addCurve()
++{	primitives += "curve -0.2 0 0 0.5 0.2 0 0 0.5 'r2'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addRhomb()
++{	primitives += "rhomb -0.2 0 0.2 0 0.1 'r'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addEllipse()
++{	primitives += "ellipse -0.2 0 0.2 0 0.1 'r'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addArc()
++{	primitives += "arc 0 0 0.2 0 60 'r2'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addPolygon(int n)
++{
++	if(n<3)
++		n = QInputDialog::getText(QApplication::activeWindow(), "MathGL", tr("Enter number of vertexes")).toInt();
++	if(n>=3)
++	{	primitives += "polygon 0 0 0 0.2 "+QString::number(n)+" 'r'\n";	refresh();	}
++}
++//{	primitives += "arc -0.2 0 0.2 0 0.1 'r'\n";	refresh();	}
++//-----------------------------------------------------------------------------
++void QMathGL::addText(QString txt)
++{
++	if(txt.isEmpty())
++		txt = QInputDialog::getText(QApplication::activeWindow(), "MathGL", tr("Enter text"));
++	if(!txt.isEmpty())
++	{	primitives += "text 0 0 0.1 0 '"+txt+"' ''\n";	refresh();	}
++}
++//-----------------------------------------------------------------------------
++//
++//		class mglCanvasQT
++//
++//-----------------------------------------------------------------------------
++mglCanvasQT::mglCanvasQT() : mglCanvasWnd()
++{	Wnd = 0;	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::GotoFrame(int d)
++{
++	int f = GetCurFig()+d;
++	if(f>=GetNumFig())	f = 0;
++	if(f<0)	f = GetNumFig()-1;
++	if(GetNumFig()>0 && d)	{	SetCurFig(f);	QMGL->refresh();	}
++}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::Animation()	{	QMGL->animation(true);	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::ToggleAlpha()	{	QMGL->setAlpha(!QMGL->getAlpha());	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::ToggleLight()	{	QMGL->setLight(!QMGL->getLight());	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::ToggleNo()		{	QMGL->restore();	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::ToggleZoom()	{	QMGL->setZoom(!QMGL->getZoom());	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::ToggleRotate(){	QMGL->setRotate(!QMGL->getRotate());}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::Update()		{	SetCurFig(0);	QMGL->update();	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::Adjust()		{	QMGL->adjust();	}
++//-----------------------------------------------------------------------------
++void mglCanvasQT::Window(int argc, char **argv, int (*draw)(mglBase *gr, void *p), const char *title, void *par, void (*reload)(void *p), bool maximize)
++{
++	SetDrawFunc(draw, par, reload);
++	if(Wnd)
++	{
++		Wnd->setWindowTitle(title);
++		if(maximize)
++		{	Wnd->showMaximized();	}
++		else	Wnd->show();
++		return;
++	}
++
++	if(!qApp)
++	{
++#if !defined(WIN32) && !defined(__APPLE__)
++		// try to fix possible multi-threading errors
++		// must be placed before ANY window creation
++		XInitThreads();
++#endif
++//		static char buf=0, *tmp=&buf;
++//		if(!argv)	{	argc = 1;	argv = &tmp;	}
++		if(!argv)	argc = 0;
++		QApplication *a = new QApplication(argc, argv);
++		a->connect(a, SIGNAL(lastWindowClosed()), a, SLOT(quit()));
++	}
++
++	Wnd = new QMainWindow;	Wnd->resize(850,680);
++	Wnd->setWindowTitle(title);
++	scroll = new QScrollArea(Wnd);
++
++	QMGL = new QMathGL(Wnd);
++	popup = mglMakeMenu(Wnd, QMGL, tet, phi);
++	QMGL->setPopup(popup);	QMGL->setGraph(this);
++	QMGL->setDraw(draw, par);
++	QMGL->appName = title;
++	qApp->processEvents();
++	scroll->setWidget(QMGL);
++	Wnd->setCentralWidget(scroll);
++	QMGL->refresh();
++	if(!maximize)	Wnd->show();
++	else	Wnd->showMaximized();
++}
++//-----------------------------------------------------------------------------
++#include "xpm/alpha.xpm"
++#include "xpm/arc.xpm"
++#include "xpm/copy.xpm"
++#include "xpm/curve.xpm"
++#include "xpm/down_1.xpm"
++#include "xpm/fileprint.xpm"
++#include "xpm/left_1.xpm"
++#include "xpm/light.xpm"
++#include "xpm/line.xpm"
++#include "xpm/mark_a.xpm"
++#include "xpm/mark_d.xpm"
++#include "xpm/mark_o.xpm"
++#include "xpm/mark_s.xpm"
++#include "xpm/right_1.xpm"
++#include "xpm/next_sl.xpm"
++#include "xpm/norm_1.xpm"
++#include "xpm/ok.xpm"
++#include "xpm/prev_sl.xpm"
++#include "xpm/rotate.xpm"
++#include "xpm/show_sl.xpm"
++#include "xpm/text.xpm"
++#include "xpm/polygon.xpm"
++#include "xpm/zoom_1.xpm"
++#include "xpm/zoom_in.xpm"
++#include "xpm/zoom_out.xpm"
++#include "xpm/up_1.xpm"
++#include "xpm/stop.xpm"
++//-----------------------------------------------------------------------------
++#define TR	QObject::tr
++MGL_EXPORT QMenu *mglMakeMenu(QMainWindow *Wnd, QMathGL *QMGL, QSpinBox *&tet, QSpinBox *&phi)
++{
++	QAction *a;
++	QMenu *o, *oo;
++	QToolBar *bb;
++
++	QMenu *popup = new QMenu(Wnd);
++	// file menu
++	{
++		o = Wnd->menuBar()->addMenu(TR("&File"));
++		oo = new QMenu(TR("&Export as 2D ..."),Wnd);
++		oo->addAction(TR("PNG"), QMGL, SLOT(exportPNG()),Qt::ALT+Qt::Key_P);
++		oo->addAction(TR("solid PNG"), QMGL, SLOT(exportPNGs()),Qt::ALT+Qt::Key_F);
++		oo->addAction(TR("JPEG"), QMGL, SLOT(exportJPG()),Qt::ALT+Qt::Key_J);
++		oo->addAction(TR("bitmap EPS"), QMGL, SLOT(exportBPS()));
++		oo->addAction(TR("vector EPS"), QMGL, SLOT(exportEPS()),Qt::ALT+Qt::Key_E);
++		oo->addAction(TR("SVG"), QMGL, SLOT(exportSVG()),Qt::ALT+Qt::Key_S);
++		oo->addAction(TR("LaTeX"), QMGL, SLOT(exportTEX()),Qt::ALT+Qt::Key_L);
++		o->addMenu(oo);		popup->addMenu(oo);
++		oo = new QMenu(TR("&Export as 3D ..."),Wnd);
++		oo->addAction(TR("MGLD"), QMGL, SLOT(exportMGLD()),Qt::ALT+Qt::Key_M);
++		oo->addAction(TR("PRC"), QMGL, SLOT(exportPRC()),Qt::ALT+Qt::Key_D);
++		oo->addAction(TR("OBJ"), QMGL, SLOT(exportOBJ()),Qt::ALT+Qt::Key_O);
++		oo->addAction(TR("STL"), QMGL, SLOT(exportSTL()));
++		oo->addAction(TR("XYZ"), QMGL, SLOT(exportXYZ()));
++//		oo->addAction(TR("X3D"), QMGL, SLOT(exportX3D()),Qt::ALT+Qt::Key_X);
++		o->addMenu(oo);		popup->addMenu(oo);
++
++		o->addSeparator();
++		a = new QAction(QPixmap(fileprint), TR("Print &graphics"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(print()));
++		a->setToolTip(TR("Open printer dialog and print graphics\t(CTRl+P)"));
++		a->setShortcut(Qt::CTRL+Qt::Key_P);	o->addAction(a);
++		o->addSeparator();
++		o->addAction(TR("&Close"), Wnd, SLOT(close()), Qt::CTRL+Qt::Key_W);
++	}
++	// graphics menu
++	{
++		bb = new QToolBar(TR("Graphics"),Wnd);
++		Wnd->addToolBar(Qt::TopToolBarArea, bb);
++		o = Wnd->menuBar()->addMenu(TR("&Graphics"));
++		a = new QAction(QPixmap(alpha_xpm), TR("&Alpha"), Wnd);
++		a->setShortcut(Qt::ALT+Qt::Key_T);	a->setCheckable(true);
++		Wnd->connect(a, SIGNAL(toggled(bool)), QMGL, SLOT(setAlpha(bool)));
++		Wnd->connect(QMGL, SIGNAL(alphaChanged(bool)), a, SLOT(setChecked(bool)));
++		a->setToolTip(TR("Switch on/off TRansparency for the graphics (Alt+T)."));
++		o->addAction(a);		bb->addAction(a);
++		a = new QAction(QPixmap(light_xpm), TR("&Light"), Wnd);
++		a->setShortcut(Qt::ALT+Qt::Key_L);	a->setCheckable(true);
++		Wnd->connect(a, SIGNAL(toggled(bool)), QMGL, SLOT(setLight(bool)));
++		Wnd->connect(QMGL, SIGNAL(lightChanged(bool)), a, SLOT(setChecked(bool)));
++		a->setToolTip(TR("Switch on/off lightning for the graphics (Alt+L)."));
++		o->addAction(a);		bb->addAction(a);
++		a = new QAction(QPixmap(rotate_xpm), TR("&Rotate by mouse"), Wnd);
++		a->setCheckable(true);
++		Wnd->connect(a, SIGNAL(toggled(bool)), QMGL, SLOT(setRotate(bool)));
++		Wnd->connect(QMGL, SIGNAL(rotateChanged(bool)), a, SLOT(setChecked(bool)));
++		a->setToolTip(TR("Switch on/off mouse handling of the graphics\n(rotation, shifting, zooming and perspective)."));
++		bb->addAction(a);
++		a = new QAction(QPixmap(zoom_in_xpm), TR("&Zoom by mouse"), Wnd);
++		a->setCheckable(true);
++		Wnd->connect(a, SIGNAL(toggled(bool)), QMGL, SLOT(setZoom(bool)));
++		Wnd->connect(QMGL, SIGNAL(zoomChanged(bool)), a, SLOT(setChecked(bool)));
++		a->setToolTip(TR("Switch on/off mouse zoom of selected region."));
++		bb->addAction(a);
++		o->addSeparator();
++		a = new QAction(QPixmap(zoom_out_xpm), TR("Res&tore"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(restore()));
++		a->setToolTip(TR("Restore default graphics rotation, zoom and perspective (Alt+Space)."));
++		a->setShortcut(Qt::ALT+Qt::Key_Space);
++		o->addAction(a);	bb->addAction(a);	popup->addAction(a);
++		bb->addSeparator();
++		o->addAction(a);	bb->addAction(a);	popup->addAction(a);
++		a = new QAction(QPixmap(ok_xpm), TR("Re&draw"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(update()));
++		a->setToolTip(TR("Execute script and redraw graphics (F5)."));
++		a->setShortcut(Qt::Key_F5);
++		o->addAction(a);	bb->addAction(a);	popup->addAction(a);
++		a = new QAction(QPixmap(stop_xpm), TR("Stop"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(stop()));
++		a->setToolTip(TR("Ask to stop plot drawing (F7)."));
++		a->setShortcut(Qt::Key_F7);
++		a = new QAction(TR("&Adjust size"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(adjust()));
++		a->setToolTip(TR("Change canvas size to fill whole region (F6)."));
++		a->setShortcut(Qt::Key_F6);		o->addAction(a);
++		a = new QAction(QPixmap(copy_xpm), TR("&Copy plot"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(copy()));
++		a->setToolTip(TR("Copy graphics to clipboard (CTRl+Shift+G)."));
++		a->setShortcut(Qt::CTRL+Qt::SHIFT+Qt::Key_G);
++		o->addAction(a);		bb->addAction(a);	popup->addAction(a);
++
++		bb->addSeparator();
++		oo = new QMenu(TR("Primitives ..."),Wnd);
++		a = new QAction(QPixmap(line_xpm), TR("Add line"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addLine()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add line which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(arc_xpm), TR("Add arc"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addArc()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add arc which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(curve_xpm), TR("Add curve"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addCurve()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add curve which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(mark_s_xpm), TR("Add rect"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addRect()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add rectangle which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(mark_d_xpm), TR("Add rhombus"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addRhomb()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add rhombus which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(mark_o_xpm), TR("Add ellipse"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addEllipse()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add ellipse which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(polygon_xpm), TR("Add polygon"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addPolygon()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add polygon which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(mark_a_xpm), TR("Add mark"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addMark()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add marker which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		a = new QAction(QPixmap(text_xpm), TR("Add text"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(addText()));
++		Wnd->connect(QMGL, SIGNAL(usePrimChanged(bool)), a, SLOT(setVisible(bool)));
++		a->setToolTip(TR("Add text which properties can be changed later by mouse."));
++		bb->addAction(a);	oo->addAction(a);
++		o->addMenu(oo);
++
++		bb->addSeparator();
++		tet = new QSpinBox(Wnd);	tet->setWrapping(true);
++		bb->addWidget(tet);	tet->setRange(-180, 180);	tet->setSingleStep(10);
++		Wnd->connect(tet, SIGNAL(valueChanged(int)), QMGL, SLOT(setTet(int)));
++		Wnd->connect(QMGL, SIGNAL(tetChanged(int)), tet, SLOT(setValue(int)));
++		tet->setToolTip(TR("Set value of \\theta angle."));
++		bb->addSeparator();
++		phi = new QSpinBox(Wnd);	phi->setWrapping(true);
++		bb->addWidget(phi);	phi->setRange(-180, 180);	phi->setSingleStep(10);
++		Wnd->connect(phi, SIGNAL(valueChanged(int)), QMGL, SLOT(setPhi(int)));
++		Wnd->connect(QMGL, SIGNAL(phiChanged(int)), phi, SLOT(setValue(int)));
++		phi->setToolTip(TR("Set value of \\phi angle."));
++//	bb->addSeparator();
++	}
++	// zooming menu
++	{
++		oo = o->addMenu(TR("Zoom/move"));
++		bb = new QToolBar(TR("Zoom graphics"),Wnd);
++		Wnd->addToolBar(Qt::LeftToolBarArea, bb);
++		a = new QAction(QPixmap(left_1_xpm), TR("Move &left"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(shiftLeft()));
++		a->setToolTip(TR("Move graphics left by 1/3 of its width."));
++		bb->addAction(a);		oo->addAction(a);
++		a = new QAction(QPixmap(up_1_xpm), TR("Move &up"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(shiftUp()));
++		a->setToolTip(TR("Move graphics up by 1/3 of its height."));
++		bb->addAction(a);		oo->addAction(a);
++		a = new QAction(QPixmap(zoom_1_xpm), TR("Zoom &in"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(zoomIn()));
++		a->setToolTip(TR("Zoom in graphics."));
++		bb->addAction(a);		oo->addAction(a);
++		a = new QAction(QPixmap(norm_1_xpm), TR("Zoom &out"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(zoomOut()));
++		a->setToolTip(TR("Zoom out graphics."));
++		bb->addAction(a);		oo->addAction(a);
++		a = new QAction(QPixmap(down_1_xpm), TR("Move &down"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(shiftDown()));
++		a->setToolTip(TR("Move graphics up down 1/3 of its height."));
++		bb->addAction(a);		oo->addAction(a);
++		a = new QAction(QPixmap(right_1_xpm), TR("Move &right"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(shiftRight()));
++		a->setToolTip(TR("Move graphics right by 1/3 of its width."));
++		bb->addAction(a);		oo->addAction(a);
++	}
++	// animation menu
++	{
++		o = Wnd->menuBar()->addMenu(TR("&Animation"));
++		bb = new QToolBar(TR("Animation"),Wnd);
++		Wnd->addToolBar(Qt::LeftToolBarArea, bb);
++		a = new QAction(QPixmap(next_sl_xpm), TR("&Next slide"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(nextSlide()));
++		a->setToolTip(TR("Show next slide (Ctrl+.)."));
++		a->setShortcut(Qt::CTRL+Qt::Key_Period);	o->addAction(a);		bb->addAction(a);
++		a = new QAction(QPixmap(show_sl_xpm), TR("&Slideshow"), Wnd);
++		a->setCheckable(true);
++		Wnd->connect(a, SIGNAL(toggled(bool)), QMGL, SLOT(animation(bool)));
++		a->setToolTip(TR("Run slideshow (CTRl+F5)."));
++		a->setShortcut(Qt::CTRL+Qt::Key_F5);	o->addAction(a);		bb->addAction(a);
++		a = new QAction(QPixmap(prev_sl_xpm), TR("&Prev slide"), Wnd);
++		Wnd->connect(a, SIGNAL(triggered()), QMGL, SLOT(prevSlide()));
++		a->setToolTip(TR("Show previous slide (Ctrl+,)."));
++		a->setShortcut(Qt::CTRL+Qt::Key_Comma);	o->addAction(a);		bb->addAction(a);
++	}
++
++	Wnd->menuBar()->addSeparator();
++	o = Wnd->menuBar()->addMenu(TR("&Help"));
++	o->addAction(TR("About"), QMGL, SLOT(about()));
++	o->addAction(TR("About &Qt"), QMGL, SLOT(aboutQt()));
++	return popup;
++}
++//-----------------------------------------------------------------------------
++HMGL MGL_EXPORT mgl_create_graph_qt(int (*draw)(HMGL gr, void *p), const char *title, void *par, void (*load)(void *p))
++{
++	mglCanvasQT *g = new mglCanvasQT;
++	g->Window(0,0,draw,title,par,load);
++	return g;
++}
++int MGL_EXPORT mgl_qt_run()	{	return (qApp)?qApp->exec():-1;	}
++//-----------------------------------------------------------------------------
++uintptr_t MGL_EXPORT mgl_create_graph_qt_(const char *title, int l)
++{
++	char *s = new char[l+1];	memcpy(s,title,l);	s[l]=0;
++	uintptr_t t = uintptr_t(mgl_create_graph_qt(0,s,0,0));
++	delete []s;	return t;
++}
++int MGL_EXPORT mgl_qt_run_()	{	return mgl_qt_run();	}
++//-----------------------------------------------------------------------------