/*

gdpc - a program for visualising molecular dynamic simulations
Copyright (C) 2000 Jonas Frantz

    This file is part of gdpc.

    gdpc 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.

    gdpc 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


Authors email : jonas.frantz@helsinki.fi

*/

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <glib.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "parameters.h"
#include <stddef.h>
#include <unistd.h>
#include <sys/time.h> 

/* Some internal variables declared next */
GtkWidget	*window;
GtkWidget	*drawing_area;
GtkWidget	*time_entry;
GtkWidget	*coord_entry;
GtkWidget	*maxx_entry,*maxy_entry,*maxz_entry;
GtkWidget	*xc_entry,*yc_entry,*zc_entry;

gboolean	MB_pressed;

gint		retcode;	/* Return value from create_thread command */
GThread 	*th_a;		/* Thread structure */

struct DrawStruct DrawData;	/* Universal structure drawing variables */

extern gint NumFrameRI;		/* Contains which frame is about to be 
				   read from the input data */
extern double FrameTime;		/* Contains time of frame just shown */
extern FILE *NewFP;		/* Filepointer to new file if one has 
				   been chosen, otherwise = NULL */

extern gint lastframedone;	/* Have we shown the last frame ? */

/************************************************************************/
/* This function is called when the quit button is pressed.		*/
/************************************************************************/
void quit (GtkWidget *widget, gpointer data)
{
    gtk_main_quit();
}


/************************************************************************/
/* This function is called when the pause button is pressed.		*/
/************************************************************************/
void pauseb (GtkWidget *widget, struct GlobalParams *params)
{
#if Debug 
if (GTK_TOGGLE_BUTTON (widget)->active)
    printf("Setting animation on pause.\n");
else printf("Unpausing animation.\n");
#endif

    params->pausecheck = GTK_TOGGLE_BUTTON (widget)->active;
}


/************************************************************************/
/* This function is called when the restart button is pressed.   	*/
/* It simply resets the filepointer and clears the drawingboard. 	*/
/************************************************************************/
void restart (GtkWidget *widget, struct GlobalParams *params)
{
gint i;

#if Debug 
printf("Restarting animation.\n");
printf("Clearing framedrawn semaphores.\n");
#endif

    for (i=NUMFRAMES-1;i>=0;i--) {
	g_mutex_trylock(params->framedrawn[i]);
    }

#if Debug
printf("Opening new file.\n"); 
#endif

    NewFP=fopen(params->file,"r"); 
    if (NewFP==NULL) {
	printf("Error opening file: %s\n",params->file);
	gtk_main_quit();
    }
    fseek(NewFP,SEEK_SET,0);
    g_mutex_unlock(params->atEnd);
    cleardrawable(DrawData);
    params->numframe = 1;

#if Debug
printf("Reinitialize filewait/frameready/framedrawn semaphores.\n"); 
#endif

    g_mutex_unlock(params->filewait);

    for (i=NUMFRAMES-1;i>=0;i--) {
	g_mutex_trylock(params->frameready[i]);
    }

    DrawData.NumFrame = NumFrameRI;

    for (i=0;i<NUMFRAMES;i++) {
	g_mutex_unlock(params->framedrawn[i]);
    }
}


/************************************************************************/
/* This function is called when the setup button is pressed.		*/
/* It stops the animation and calls the setupwindow function.		*/
/************************************************************************/
void setup (GtkWidget *widget, struct GlobalParams *params)
{
#if Debug
printf("Starting setup window.\n"); 
#endif

    params->setupstop = TRUE;
    params->oldxc = params->xcolumn;
    params->oldyc = params->ycolumn;
    params->oldzc = params->zcolumn;
    params->oldtc = params->tcolumn;
    params->oldxsize = params->absxsize;
    params->oldysize = params->absysize;
    setupwindow(params);
}


/************************************************************************/
/* This function is called when the window is moved, resized etc. 	*/
/* It redraws the drawingboard.						*/
/************************************************************************/
static gint expose_event(GtkWidget *widget, GdkEventExpose *event,
			 struct GlobalParams *params)
{
#if Debug
printf("Expose: Drawing window.\n"); 
#endif

  gdk_draw_drawable(widget->window,widget->style->white_gc,
		  DrawData.pixmap,
		  event->area.x, event->area.y,
		  event->area.x, event->area.y,
		  event->area.width, event->area.height);

  return FALSE;
}


/************************************************************************/
/* This function is called when the program is started.			*/
/* It creates a pixmap and clears it and puts it on the screen.		*/
/************************************************************************/
gint configure_event (GtkWidget *widget, GdkEventConfigure *event,
		      struct GlobalParams *params)
{
#if Debug
printf("Configuring window.\n"); 
#endif

    if (DrawData.pixmap) g_object_unref(DrawData.pixmap);

    DrawData.pixmap = gdk_pixmap_new(widget->window,
				     widget->allocation.width,
				     widget->allocation.height, -1);

    params->absxsize = widget->allocation.width-2*xborder;
    params->absysize = widget->allocation.height-2*yborder;

    if (!params->redrawcheck) {
	cleardrawable(DrawData);
    }
    else {
	cleardrawable(DrawData);

	rotateatoms(DrawData);
//	params->redrawcheck = FALSE;
    }
    params->rotated = TRUE;
    return TRUE;
}


/************************************************************************/
/* This procedure is called when keyboard key is pressed.		*/
/* Escape key quits gdpc, space is used with the bsleep option.		*/
/************************************************************************/
gboolean key_press_event (GtkWidget *widget, GdkEventKey *event,
			  gpointer data)
{
    switch (event->keyval) {
	case GDK_Escape:
	    gtk_main_quit();
	    break;

	case GDK_space:
	    MB_pressed = TRUE;
	    return FALSE;
	    break;

	default:
	    return FALSE;
	    break;
    }
    return TRUE;
}


/************************************************************************/
/* This procedure is called when a mousebutton is pressed.		*/
/* If the right button is pressed it quits, to be backwards compatible	*/
/* with dpc. When the left button is pressed this procedure saves the	*/
/* position of the cursor.						*/
/************************************************************************/
gint button_press_event(GtkWidget *widget, GdkEventButton *event, 
			struct GlobalParams *params)
{
#if Debug
printf("Button pressed.\n"); 
#endif

    if (event->button == 1) {
	params->pressed=TRUE;
	params->xpress=event->x;
	params->ypress=event->y;
    } 
    else if (event->button == 2) {
	MB_pressed = TRUE;
    } 
    else if (event->button == 3) {
	gtk_main_quit();
    }
    return TRUE;
}


/************************************************************************/
/* This procedure is called when a mousebutton is released.		*/
/* When released the procedure ends the tracking of mouse movement and	*/
/* rotates the atoms to their final position.				*/
/************************************************************************/
gint button_release_event(GtkWidget *widget, GdkEventButton *event,
			  struct GlobalParams *params)
{
#if Debug
printf("Button released.\n"); 
#endif

    if (event->button==1) {
	params->pressed=FALSE;
	mouserotate(widget,(params->xpress-event->x),
		    (params->ypress-event->y),params);
    } 
    else if (event->button==2) {
    } 
    else if (event->button==3) {
	gtk_main_quit();
    }
    return TRUE;
}


/************************************************************************/
/* This function is called when the mouse is moved inside the window,	*/
/* it sets the coordinates in the coordinateentry. It also rotates the	*/
/* atoms according to the movement of the mouse while the left button	*/
/* is pressed down.							*/
/************************************************************************/
gint motion_notify_event (GtkWidget *widget, GdkEventMotion *event,
			  struct GlobalParams *params)
{
gint x,y;
char xstr[64];
GdkModifierType state;
gint NumFrame;

#if Debug
printf("Fetching coordinates of pointer.\n"); 
#endif

    gdk_window_get_pointer (event->window, &x, &y, &state);

    if (params->pressed) {
	if (params->xpress-x > ROTATETRESHOLD || params->ypress-y > ROTATETRESHOLD
	    || params->xpress-x < -ROTATETRESHOLD || params->ypress-y < -ROTATETRESHOLD) {
#if Debug
printf("Starting rotating of scene.\n"); 
#endif
	    mouserotate(widget,(params->xpress-x),
			(params->ypress-y),params);
	    params->xpress = x;
	    params->ypress = y;
	}
    }

    NumFrame = DrawData.NumFrame;
    NumFrame--;
    if (NumFrame<0) NumFrame+=NUMFRAMES;

#if Debug
printf("Fetching and setting coordinates of pointer at scene.\n"); 
#endif
        sprintf(xstr, "X: %5.3f   Y: %5.3f",
		(((params->xmax2[NumFrame]-params->xmin2[NumFrame])
		*(x-xborder)/(double) params->absxsize)+
		params->xmin2[NumFrame]),(((params->ymax2[NumFrame]
		-params->ymin2[NumFrame])*(params->absysize-(y-yborder))/
		(double) params->absysize))+params->ymin2[NumFrame]);
        gtk_entry_set_text ((GtkEntry *) coord_entry, xstr);
      
    return TRUE;
}


/************************************************************************/
/* This function is called at the end of setupwindow if the ok button 	*/
/* was pressed, it reinitializes gdpc if necessary and then continous	*/
/* the animation.							*/
/************************************************************************/
void SetupStartOk(struct GlobalParams *params) 
{
    if (params->absxsize!=params->oldxsize 
	|| params->absysize!=params->oldysize) {
	gtk_widget_set_size_request (drawing_area, 
				params->absxsize+2*xborder, 
				params->absysize+2*yborder);

	params->redrawcheck = TRUE;
    }

    params->ncolors = allocatecolors (&DrawData.colors,
				      params->colorset,
				      params->mode) - 2;
    if (params->xcolumn!=params->oldxc 
	|| params->ycolumn!=params->oldyc 
	|| params->zcolumn!=params->oldzc 
	|| params->tcolumn!=params->oldtc ) {
	fseek(params->fp,SEEK_SET,0);
	g_mutex_unlock(params->atEnd);
	cleardrawable(DrawData);
    }
    if (strlen(params->file)>0) {
	fclose(params->fp);
	params->fp=fopen(params->file,"r"); 
	    if(params->fp==NULL) {
		printf("Error opening file: %s\n",params->file);
		gtk_main_quit();
	    }
        fseek(params->fp,0,0);
	params->numframe=1;
	g_mutex_unlock(params->atEnd);
	cleardrawable(DrawData);
    }
    else {
	rotateatoms(DrawData);
	params->rotated=TRUE;
    }
    params->setupstop=FALSE;
}


/************************************************************************/
/* This function is called at the end of setwindow if the cancel button */
/* was pressed. It simply continous the animation.			*/
/************************************************************************/
void SetupStartCancel(struct GlobalParams *params) 
{
    params->setupstop=FALSE;
}


/************************************************************************/
/* This function is called when there has been a change in angle from	*/
/* pressing a button.							*/
/************************************************************************/
void drawrotate(GtkWidget *widget, struct GlobalParams *params) 
{
#if Debug
printf("Drawing rotated scene.\n"); 
#endif

    cleardrawable(DrawData);
    DrawData.NumFrame--;
    rotateatoms(DrawData);
    DrawData.NumFrame++;
    params->rotated=TRUE;
}


/************************************************************************/
/* This function is the callback for the timeout instruction.		*/
/* It checks if a frame is being drawed or pause is pressed or if the	*/
/* animation is at the end, else it calls drawatoms which starts drawing*/
/* the next frame. When drawatoms is done, if updates the time in the	*/
/* timeentry and puts the pixmap onto the screen.			*/
/************************************************************************/ 
gboolean drawnext(struct GlobalParams *params) 
{
char tstr[64];
char picname[128];
char pictype[16];
GdkPixbuf *pixbuf;
GError *error;
struct timeval tv;
struct timezone tz;
static long previous_usec = 0;
static long previous_sec = 0;

#if Debug
printf("Idle callback called.\n");
#endif

    gettimeofday(&tv, &tz);

//printf("%f\n",((double)tv.tv_sec-previous_sec)*1000 + ((double) tv.tv_usec-previous_usec)/1000);

//if (1) {
    if ((((double)tv.tv_sec-previous_sec)*1000 + ((double) tv.tv_usec-previous_usec)/1000) > ((double) params->interval)) {
	previous_usec = tv.tv_usec;
	previous_sec = tv.tv_sec;

	if(params->drawcheck && !params->pausecheck &&
	   !params->setupstop && (!params->mbsleep || MB_pressed)) {
	    params->drawcheck=FALSE;
	    MB_pressed = FALSE;
	    if (g_mutex_trylock(params->frameready[DrawData.NumFrame])==TRUE) {

#if Debug
printf("Calling drawing function.\n");
#endif
		rotateatoms(DrawData);

		params->redrawcheck = TRUE;

#if Debug
printf("Done drawing.\n");
#endif

#if Debug
printf("Writing out pixmap to window.\n");
#endif

		gdk_draw_drawable(drawing_area->window,
				drawing_area->style->white_gc,
				DrawData.pixmap, 0, 0, 0, 0,
				params->absxsize+2*xborder,
				params->absysize+2*yborder);
#if Debug
printf("Done writing out pixmap to window.\n");
printf("Setting entryboxes.\n");
#endif

		sprintf(tstr,"X: %4.3f - %4.3f",
			params->xmin2[DrawData.NumFrame], 
			params->xmax2[DrawData.NumFrame]);
		gtk_entry_set_text((GtkEntry *) maxx_entry, tstr);
		sprintf(tstr,"Y: %4.3f - %4.3f",
			params->ymin2[DrawData.NumFrame],
			params->ymax2[DrawData.NumFrame]);
		gtk_entry_set_text((GtkEntry *) maxy_entry, tstr);
		sprintf(tstr,"Z: %4.3f - %4.3f",
			params->zmin2[DrawData.NumFrame],
			params->zmax2[DrawData.NumFrame]);
		gtk_entry_set_text((GtkEntry *) maxz_entry, tstr);

		sprintf(tstr,"Time: %5.3f fs",FrameTime);
		gtk_entry_set_text ((GtkEntry *) time_entry, tstr);

#if Debug
printf("%s\n",params->dumpname);
#endif
		if (params->dumpname[0] != '\0') {
#if Debug
printf("Creating image of frame to dump.\n");
#endif

		    if (params->tifjpg) {
#if Debug
printf("Dumping png.\n");
#endif
			sprintf(pictype,"png");
			if (params->dumpnum) sprintf(picname,"%s-%d.png",
			    params->dumpname, params->numframe);
			else sprintf(picname,"%s-%5.3f.png",
				     params->dumpname, FrameTime);
		    }
		    else {
#if Debug
printf("Dumping jpg.\n");
#endif
			sprintf(pictype,"jpeg");
			if (params->dumpnum) sprintf(picname,"%s-%d.jpg",
						     params->dumpname,
						     params->numframe);
			else sprintf(picname,"%s-%5.3f.jpg",
				     params->dumpname,FrameTime);
		    }
		    pixbuf = gdk_pixbuf_get_from_drawable(NULL,DrawData.pixmap,
				gdk_colormap_get_system(),0,0,0,0,
				params->absxsize+2*xborder,params->absysize+2*yborder);
                    if (pixbuf == NULL)
                      printf("Error making pixbuf!\n");
                    else {
                      error = NULL;
                      if (gdk_pixbuf_save(pixbuf, picname, pictype, &error, NULL) == TRUE) {
#if Debug
printf("Image dumped.\n");
#endif
		    } else {
			printf("Error dumping image\n");
		    }
                      g_object_unref(pixbuf);
                    }
		}
		params->numframe++;

		g_mutex_unlock(params->framedrawn[DrawData.NumFrame]);
		DrawData.NumFrame++;
		if (DrawData.NumFrame==NUMFRAMES) DrawData.NumFrame = 0;
		params->drawcheck = TRUE;
	    }
	    else params->drawcheck = TRUE;
	}
    }

#if Debug
printf("Done with drawing part of timeoutcallback.\n");
#endif

    if (params->rotated) {
#if Debug
printf("Writing out rotated frame pixmap to window.\n");
#endif
	gdk_draw_drawable(drawing_area->window,
			drawing_area->style->white_gc,
			DrawData.pixmap, 0, 0, 0, 0,
			params->absxsize+2*xborder,
			params->absysize+2*yborder);
	params->rotated = FALSE;
    }

#if Debug
printf("Setting angle entryboxes.\n");
#endif

    sprintf(tstr,"X angle: %f",params->xc);
    gtk_entry_set_text((GtkEntry *) xc_entry, tstr); 
    sprintf(tstr,"Y angle: %f",params->yc);
    gtk_entry_set_text((GtkEntry *) yc_entry, tstr); 
    sprintf(tstr,"Z angle: %f",params->zc);
    gtk_entry_set_text((GtkEntry *) zc_entry, tstr); 

    if (params->once && lastframedone) gtk_main_quit();

return TRUE;
}


/************************************************************************/
/* This function is called when the redraw button is pressed in the 	*/
/* setup window. It just redraws the frame.				*/
/************************************************************************/
void SetupRedraw(struct GlobalParams *params) 
{
    if (params->absxsize!=params->oldxsize 
	|| params->absysize!=params->oldysize) {
	gtk_widget_set_size_request (drawing_area, 
				params->absxsize+2*xborder, 
				params->absysize+2*yborder);

	params->redrawcheck=TRUE;
	cleardrawable(DrawData);
    }

    if (params->erase) cleardrawable(DrawData);
    params->ncolors = allocatecolors (&DrawData.colors,
				      params->colorset,
				      params->mode) - 2;

    rotateatoms(DrawData);
    params->rotated = TRUE;
    params->oldxc = params->xcolumn;
    params->oldyc = params->ycolumn;
    params->oldzc = params->zcolumn;
    params->oldtc = params->tcolumn;
    params->oldxsize = params->absxsize;
    params->oldysize = params->absysize;
}

/************************************************************************/
/* The StartEverything function is called by main() after the 		*/
/* commandline arguments or the setupwindow has finished processing of 	*/
/* the parameters. This function sets up all the buttons, entries, 	*/
/* boxes,the timeout and the drawingboard.				*/
/************************************************************************/ 
void StartEverything(struct GlobalParams *params) 
{
GtkWidget	*vbox, *hbox, *vboxleft, *vboxmiddle, *vboxright, *vboxrb;
GtkWidget	*vboxcoord, *hboxx, *hboxy, *hboxz, *hboxsetup;
GtkWidget	*quit_button, *restart_button, *pause_button, *reseto_button;
GtkWidget	*setup_button, *xplus_button, *yplus_button, *zplus_button;
GtkWidget	*xminus_button, *yminus_button, *zminus_button,*xplus10_button;
GtkWidget	*yplus10_button, *zplus10_button, *xminus10_button;
GtkWidget	*yminus10_button, *zminus10_button, *xlabel, *ylabel, *zlabel;
char		buf[128];
gint 		i;

    params->StartedAlready = TRUE;

/* Set the window title. */
    sprintf(buf,"gdpc "GDPCVER" : %s",params->file);

    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title (GTK_WINDOW (window), buf);
    gtk_window_set_resizable(GTK_WINDOW (window), TRUE);
//    gtk_window_set_policy (GTK_WINDOW (window), TRUE, TRUE, TRUE);
    gtk_container_set_border_width (GTK_CONTAINER (window), 5);

    g_signal_connect_swapped (G_OBJECT (window), "key_press_event",
			      G_CALLBACK (key_press_event), NULL);

/* Create boxes for outlay. */
    vbox = gtk_vbox_new (FALSE, 0);
    hbox = gtk_hbox_new (FALSE, 5);
    vboxleft = gtk_vbox_new (FALSE, 3);
    vboxmiddle = gtk_vbox_new (FALSE, 3);
    vboxright = gtk_vbox_new (FALSE, 3);
    hboxsetup = gtk_hbox_new (FALSE, 3);
    vboxrb = gtk_vbox_new (FALSE, 3);
    vboxcoord = gtk_vbox_new (FALSE, 3);
    hboxx = gtk_hbox_new (FALSE, 3);
    hboxy = gtk_hbox_new (FALSE, 3);
    hboxz = gtk_hbox_new (FALSE, 3);
    gtk_container_add (GTK_CONTAINER (window), vbox);

    xlabel = gtk_label_new(" X ");
    ylabel = gtk_label_new(" Y ");
    zlabel = gtk_label_new(" Z ");

/* Create the drawing area. */

    drawing_area = gtk_drawing_area_new ();
    gtk_widget_set_size_request (drawing_area, 
				 params->absxsize+2*xborder, 
				 params->absysize+2*yborder);

    gtk_box_pack_start (GTK_BOX (vbox), drawing_area, 
			TRUE, TRUE, 0);

/* Connect the events to their procedures. */
    g_signal_connect (G_OBJECT (drawing_area), "expose_event",
		      G_CALLBACK (expose_event), params);

    g_signal_connect (G_OBJECT (drawing_area), "configure_event",
		      G_CALLBACK (configure_event), params);

    g_signal_connect (G_OBJECT (drawing_area), "button_press_event",
		      G_CALLBACK (button_press_event), params);
    g_signal_connect (G_OBJECT (drawing_area), "button_release_event",
		      G_CALLBACK (button_release_event), params);

    g_signal_connect (G_OBJECT (drawing_area), "motion_notify_event",
		      G_CALLBACK (motion_notify_event), params);

    gtk_widget_set_events (drawing_area, 
                              GDK_EXPOSURE_MASK 
                            | GDK_BUTTON_PRESS_MASK               
                            | GDK_BUTTON_RELEASE_MASK               
                            | GDK_POINTER_MOTION_MASK
                            | GDK_POINTER_MOTION_HINT_MASK);

    
/* Create entries for the  x- and y- coordinates of the cursor and the time. */
    maxx_entry  = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) maxx_entry, FALSE);
    maxy_entry  = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) maxy_entry, FALSE);
    maxz_entry  = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) maxz_entry, FALSE);
    xc_entry    = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) xc_entry, FALSE);
    yc_entry    = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) yc_entry, FALSE);
    zc_entry    = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) zc_entry, FALSE);
    time_entry  = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) time_entry, FALSE);
    coord_entry = gtk_entry_new();
    gtk_editable_set_editable((GtkEditable *) coord_entry, FALSE);
    gtk_box_pack_start (GTK_BOX (vboxcoord), xc_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxcoord), yc_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxcoord), zc_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxleft), maxx_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxmiddle), maxy_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxright), maxz_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxleft), time_entry, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxmiddle), coord_entry, FALSE, FALSE, 0);


/* Create buttons and connect them to their procedures. */
/* Create reset orientation button */
    reseto_button = gtk_button_new_with_mnemonic ("Reset _Orientation");
    gtk_box_pack_start (GTK_BOX (vboxright), reseto_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (reseto_button), "clicked",  
                    G_CALLBACK (resetob),GTK_OBJECT (window)); 

/* Create restart button. */
    restart_button = gtk_button_new_with_mnemonic ("_Restart");
    gtk_box_pack_start (GTK_BOX (hboxsetup), restart_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (restart_button), "clicked",
		      G_CALLBACK (restart),(gpointer) params);

    setup_button = gtk_button_new_with_mnemonic ("_Setup");;
    gtk_box_pack_start (GTK_BOX (hboxsetup), setup_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (setup_button), "clicked",
		      G_CALLBACK (setup),(gpointer) params);
    gtk_box_pack_start (GTK_BOX (vboxleft), hboxsetup, TRUE, TRUE, 0);

/* Create pause button. */
    pause_button = gtk_toggle_button_new_with_mnemonic ("_Pause");
    gtk_box_pack_start (GTK_BOX (vboxmiddle), pause_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (pause_button), "clicked",
		      G_CALLBACK (pauseb),(gpointer) params);

/* Create quit button. */
    quit_button = gtk_button_new_from_stock (GTK_STOCK_QUIT);
    gtk_box_pack_start (GTK_BOX (vboxright), quit_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (quit_button), "clicked",
		      G_CALLBACK (quit),GTK_OBJECT (window));

    xminus10_button = gtk_button_new_with_label ("<<");
    gtk_box_pack_start (GTK_BOX (hboxx), xminus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (xminus10_button), "clicked",
		      G_CALLBACK (xminus10b),(gpointer) params);
    xminus_button = gtk_button_new_with_label ("<");
    gtk_box_pack_start (GTK_BOX (hboxx), xminus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (xminus_button), "clicked", 
		      G_CALLBACK (xminusb),(gpointer) params);
    gtk_box_pack_start (GTK_BOX (hboxx), xlabel, TRUE, TRUE, 0);
    xplus_button = gtk_button_new_with_label (">");
    gtk_box_pack_start (GTK_BOX (hboxx), xplus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (xplus_button), "clicked", 
		      G_CALLBACK (xplusb),(gpointer) params);
    xplus10_button = gtk_button_new_with_label (">>");
    gtk_box_pack_start (GTK_BOX (hboxx), xplus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (xplus10_button), "clicked", 
		      G_CALLBACK (xplus10b),(gpointer) params);

    yminus10_button = gtk_button_new_with_label ("<<");
    gtk_box_pack_start (GTK_BOX (hboxy), yminus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (yminus10_button), "clicked", 
		      G_CALLBACK (yminus10b),(gpointer) params);
    yminus_button = gtk_button_new_with_label ("<");
    gtk_box_pack_start (GTK_BOX (hboxy), yminus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (yminus_button), "clicked", 
		      G_CALLBACK (yminusb), (gpointer) params);
    gtk_box_pack_start (GTK_BOX (hboxy), ylabel, TRUE, TRUE, 0);
    yplus_button = gtk_button_new_with_label (">");
    gtk_box_pack_start (GTK_BOX (hboxy), yplus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (yplus_button), "clicked", 
		      G_CALLBACK (yplusb), (gpointer) params);
    yplus10_button = gtk_button_new_with_label (">>");
    gtk_box_pack_start (GTK_BOX (hboxy), yplus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (yplus10_button), "clicked", 
		      G_CALLBACK (yplus10b),(gpointer) params);

    zminus10_button = gtk_button_new_with_label ("<<");
    gtk_box_pack_start (GTK_BOX (hboxz), zminus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (zminus10_button), "clicked", 
		      G_CALLBACK (zminus10b),(gpointer) params);
    zminus_button = gtk_button_new_with_label ("<");
    gtk_box_pack_start (GTK_BOX (hboxz), zminus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (zminus_button), "clicked", 
		      G_CALLBACK (zminusb),(gpointer) params);
    gtk_box_pack_start (GTK_BOX (hboxz), zlabel, TRUE, TRUE, 0);
    zplus_button = gtk_button_new_with_label (">");
    gtk_box_pack_start (GTK_BOX (hboxz), zplus_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (zplus_button), "clicked", 
		      G_CALLBACK (zplusb),(gpointer) params);
    zplus10_button = gtk_button_new_with_label (">>");
    gtk_box_pack_start (GTK_BOX (hboxz), zplus10_button, TRUE, TRUE, 0);
    g_signal_connect (G_OBJECT (zplus10_button), "clicked", 
		      G_CALLBACK (zplus10b),(gpointer) params);

    g_signal_connect (G_OBJECT (window), "destroy",
		      G_CALLBACK (quit),GTK_OBJECT (window));

/* Put the hbox into the vbox. */
    gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), vboxleft, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), vboxmiddle, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), vboxright, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), vboxrb, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), vboxcoord, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxrb), hboxx, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxrb), hboxy, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vboxrb), hboxz, FALSE, FALSE, 0);

/* Open the input file, if it fails exit. */
    if (params->file[0]=='_')  params->fp=stdin; 
    else {
	params->fp=NULL;
	params->fp=fopen(params->file,"r"); 
	if(params->fp==NULL) {
	    printf("Error opening file: %s\n",params->file);
	    gtk_main_quit();
	}
	fseek(params->fp,0,0);
    }

/* Allocate colors */
    params->ncolors = allocatecolors (&DrawData.colors,
					params->colorset,
					params->mode) - 2;

/* Show all boxes,entries,buttons and pixmaps. */
    gtk_widget_show_all (window);

#if Debug 
printf("Initialising filereading/framedrawing semaphores.\n");
#endif

  for (i=0;i<NUMFRAMES;i++) {
	params->frameready[i] = g_mutex_new();
	g_mutex_lock (params->frameready[i]);
	params->framedrawn[i] = g_mutex_new();
	g_mutex_unlock (params->framedrawn[i]);
	params->framedata[i] = NULL;
    }
    DrawData.NumFrame = 0;

#if Debug 
printf("Initialising filewait/EOF semaphores.\n");
#endif

    params->filewait = g_mutex_new();
    g_mutex_lock (params->filewait);
    params->atEnd = g_mutex_new();

#if Debug 
printf("Starting filereading thread.\n");
#endif

    th_a = g_thread_create ((GThreadFunc) readinput, (gpointer) params, TRUE, NULL);
    if (th_a == NULL) {
	fprintf(stderr, "Creating read thread failed.\n");
	gtk_main_quit ();
    }

#if Debug
printf("Finished initialising threads.\n");
#endif

/* Setup timeout. */
    g_idle_add((GSourceFunc) drawnext, params);
}


/************************************************************************/
/* The main function sets up default parameters and calls either	*/
/* handleargs or setupwindow depending on the number of commandline	*/
/* parameters.								*/
/************************************************************************/
int main (int argc, char **argv)
{
struct GlobalParams params;

#if Debug 
printf("Starting program.\n");
#endif

/* Control variables for program and default settings, do NOT change */

    params.iangle = 0.0; 
    params.jangle = 0.0;  
    params.kangle = 0.0; 
    params.imangle = 0.0;
    params.jmangle = 0.0;
    params.numframe = 1;
    params.pausecheck = FALSE;
    params.drawcheck = TRUE;
    params.rotated = FALSE;
    params.setupstop = FALSE;
    params.pressed = FALSE;
    params.StartedAlready = FALSE;
    params.redrawcheck = FALSE;
    params.usetypes = FALSE;

    DrawData.NumFrame = 0;
    DrawData.params = &params;

#if Debug 
printf("Fetching display variable.\n");
#endif

#if Debug 
printf("Initializing GTK.\n");
#endif

/* Start gtk initialization. */
    gtk_init (&argc, &argv);

    g_thread_init(NULL);

    printf("\n gdpc version "GDPCVER", Copyright (C) 2000 Jonas Frantz\n");
    printf(" gdpc comes with ABSOLUTELY NO WARRANTY; for details\n");
    printf(" check out the documentation.  This is free software, and\n"); 
    printf(" you are welcome to redistribute it under all conditions.\n\n");

/* Set all parameters to their default values, dont change this unless */
/* you know what you're doing. */

    params.absxsize = drawXsize;
    params.absysize = drawYsize;

    params.xmin = 65535.0;  
    params.ymin = 65535.0;  
    params.zmin = 65535.0;
    params.xmax = 0.0;
    params.ymax = 0.0;
    params.zmax = 0.0;

    params.vary = VARY;
    params.scol = SCOL;
    params.sort = SORT;
    params.radius = RADIUS;
    params.mode = MODE;
    params.colorset = COLORSET;
    params.dumpnum = DUMPNUM;
    params.whitebg = WHITEBG;
    params.erase = ERASE;
    params.fxyz = FXYZ;
    params.drawcheck = TRUE;
    params.mbsleep = FALSE;
    params.once = FALSE;

    params.xcolumn = XCOLUMN;
    params.ycolumn = YCOLUMN;
    params.zcolumn = ZCOLUMN;
    params.tcolumn = TCOLUMN;

    params.interval = 0;

    params.dumpname[0] = '\0';

    strcpy(params.timedelim,TIMESTRING);

/* Handle arguments passed to the program. */
    if (argc==1) {
#if Debug 
printf("Starting setup window.\n");
#endif
	setupwindow(&params);
	}
    else { 
#if Debug 
printf("Start processing commandline arguments.\n");
#endif
	if(!handleargs(argc,argv,&params)) exit(-1);
	StartEverything(&params);
    }

#if Debug 
printf("Starting gtkmain().\n");
#endif

/* Start gtk. */

    gtk_main ();

    exit(0);
}