#include <stdio.h>
#include <grass/raster.h>
#include <grass/display.h>
#include "local_proto.h"

void mouse (int line_color, int text_color)
{
    int x1,y1,x2,y2;
    double lat1, lon1, lat2, lon2;
    int top, bottom, left, right;
    int button ;

    right  = (int)D_get_d_east();
    left   = (int)D_get_d_west();
    top    = (int)D_get_d_north();
    bottom = (int)D_get_d_south();

    x2 = x1 = (right + left) / 2 ;
    y2 = y1 = (top + bottom) / 2 ;

    fprintf (stderr, "\n");
    fprintf (stderr, "Left:   begin\n");
    fprintf (stderr, "Middle: draw\n");
    fprintf (stderr, "Right:  quit\n");

    while (1)
    {
	R_standard_color (line_color);
	R_get_location_with_line (x1, y1, &x2, &y2, &button) ;
	if (button == 3) return;
	if (x2 < left || x2 > right)  continue;
	if (y2 < top  || y2 > bottom) continue;

	if (button == 2)
	{
	    lon1 = D_d_to_u_col((double)x1) ;
	    lat1 = D_d_to_u_row((double)y1) ;
	    lon2 = D_d_to_u_col((double)x2) ;
	    lat2 = D_d_to_u_row((double)y2) ;
	    plot (lon1, lat1, lon2, lat2, line_color, text_color);
	}

	x1 = x2;
	y1 = y2;
    }
}