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/***************************************************************
LanceMan's quickplot --- a fast interactive 2D plotter
Copyright (C) 1998, 1999 Lance Arsenault
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2
of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Or look at http://www.gnu.org/copyleft/gpl.html .
**********************************************************************/
/* $Id: show_point_values.c,v 1.2 1998/03/10 04:15:55 lance Exp $ */
#include <stdio.h>
#include <string.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/Xaw/AsciiText.h>
#include "xwin.h"
#include "data.h"
extern GC band_gc;
extern int get_window_size(Display *display, Window window,
unsigned int *width,
unsigned int *height);
extern int check_popWig(PlotXwins *win, Plot *plot);
/* get_pointer_postion() returns 1 on failure */
extern int get_pointer_postion(PlotXwins *win, int *xi, int *yi);
extern void show_fn_vals_undraw(PlotXwins *win, Plot *plot,
unsigned int width, unsigned int height,
unsigned int h1);
extern void show_true_fn_vals_undraw(PlotXwins *win, Plot *plot,
unsigned int width, unsigned int height,
unsigned int h1);
/* redraw flag */
static int show_point_values_undraw = 0;
static int sp_xi=-2,sp_yi=-2;/* last position of cross center */
void unset_show_pt_vals_undraw(void)
{
show_point_values_undraw = 0;
}
void show_pt_vals_undraw(PlotXwins *win, Plot *plot,
unsigned int width, unsigned int height,
unsigned int w1, unsigned int h1)
{
if(show_point_values_undraw)
{
if(sp_xi>-1 && sp_xi<width)
XDrawLine(win->display,win->plotwin,band_gc, sp_xi,0,sp_xi,h1);
if(sp_yi>-1 && sp_yi<height)
XDrawLine(win->display,win->plotwin,band_gc, 0,sp_yi,w1,sp_yi);
show_point_values_undraw = 0;
}
}
/* Blocks until it get an event */
/* returns 0 if Button 3 is pressed or released else returns 1 */
static int look_for_Button(PlotXwins *win)
{
XEvent event;
XWindowEvent(win->display,win->plotwin,
PointerMotionMask | ButtonReleaseMask | ButtonPressMask,&event);
switch(event.type)
{
case ButtonPress:
case ButtonRelease:
if(event.xbutton.button == Button3)
return 0;
return 1;
default:
return 1;
}
}
void print_point_values(PlotXwins *win, Plot *plot, int xi, int yi)
{
int i;
char str[100];
double x,y;
for(i=0;i<plot->num_plots;i++)
{
x = ((xi - plot->z_shift[plot->zoom_count][X])/
plot->z_scale[plot->zoom_count][X] -
plot->shift[i][X])/plot->scale[i][X];
y = ((yi - plot->z_shift[plot->zoom_count][Y])/
plot->z_scale[plot->zoom_count][Y] -
plot->shift[i][Y])/plot->scale[i][Y];
sprintf(str,"%15.15g %15.15g = (%s X, %s Y )",
x,y,plot->label[plot->list[i][X]],
plot->label[plot->list[i][Y]]);
XtVaSetValues(win->valueWig[i],XtNstring,str, NULL);
}
}
void show_point_values(PlotXwins *win, Plot *plot)
{
int x,y,do_print;
unsigned int width, height,w1,h1;
get_window_size(win->display,win->plotwin,&width,&height);
if(get_pointer_postion(win,&x,&y))
{
fprintf(stderr,"can't get pointer position: file %s line %d\n",
__FILE__,__LINE__ -3);
return;
}
h1 = height-1;
w1 = width-1;
show_fn_vals_undraw(win,plot,width,height,h1);
show_pt_vals_undraw(win,plot,width,height,w1,h1);
show_true_fn_vals_undraw(win,plot,width,height,h1);
if(x>-1 && x<width)
XDrawLine(win->display,win->plotwin,band_gc, x,0,x,h1);
if(y>-1 && y<height)
XDrawLine(win->display,win->plotwin,band_gc, 0,y,w1,y);
if(check_popWig(win,plot))
XFlush(win->display);
print_point_values(win,plot,x,y);
XFlush(win->display);
sp_xi = x;
sp_yi = y;
do_print=1;
while(look_for_Button(win))
{
if(get_pointer_postion(win,&x,&y))
{
fprintf(stderr,"can't get pointer position: file %s line %d\n",
__FILE__,__LINE__ -3);
return;
}
if(x!=sp_xi && x>-1 && x<width)
{
XDrawLine(win->display,win->plotwin,band_gc, sp_xi,0,sp_xi,h1);
XDrawLine(win->display,win->plotwin,band_gc, x,0,x,h1);
sp_xi = x; do_print=1;
}
if(y!=sp_yi && y>-1 && y<height)
{
XDrawLine(win->display,win->plotwin,band_gc, 0,sp_yi,w1,sp_yi);
XDrawLine(win->display,win->plotwin,band_gc, 0,y,w1,y);
sp_yi = y; do_print=1;
}
if(do_print)
{
print_point_values(win,plot,x,y);
XFlush(win->display);
do_print=0;
}
}
XFlush(win->display);
show_point_values_undraw = 1;
}
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