redraw_map.c

Go to the documentation of this file.

 
#include "prototypes_new.h"
 
void redraw_map(int win_x,int win_y,unsigned int button)
 
{
 
extern int odisplay_flag;
extern void send_expose();
extern int add_topo_flag,add_isohyet_flag;
extern int add_max_flag,add_min_flag;
extern int current_raster;
extern int change_map_flag;
extern int display_flag;
extern int xclip;
extern void write_screen();
extern Widget drawing_area;
extern int npoint[2],zoom,opoint[2];
extern struct display_set display_set[4];
extern int display_flag;
Arg args[10];
int XSIZE,YSIZE;
Dimension width,height;
 
/* check if a cursor function or map layer */
 
XtSetArg(args[0],XtNwidth,&width);
XtSetArg(args[1],XtNheight,&height);
XtGetValues(drawing_area,args,2);
 
XSIZE=(display_set[display_flag].xmax[0]-
      display_set[display_flag].xmin[0])/10;
YSIZE=(display_set[0].ymax[0]-
      display_set[0].ymin[0])/10;
 
if(display_flag != odisplay_flag) {
 
        printf("not equal2\n");
 
        if(display_flag==0)
                   opoint[0]=opoint[0]*2;
 
        if(display_flag==1)
                   opoint[0]=opoint[0]/2;
 
        odisplay_flag=display_flag;
 
      }
 
       
if(display_flag != 0) {
 
         if(win_x > (width-xclip/10)/2)
               win_x=win_x-(width - xclip/10)/2;
 
                     }
 
if(button==Button3) {
         
/* reposition */
             
          npoint[0]=opoint[0]+(win_x-XSIZE/2)/zoom; 
          npoint[1]=opoint[1]+(win_y-YSIZE/2)/zoom;
 
          if(zoom==1) {
 
               npoint[0]=opoint[0]=XSIZE/2;
               npoint[1]=opoint[1]=YSIZE/2;
 
                      }
 
    }
          
else if(button==Button2) {
 
/* un zoom */
 
          npoint[0]=opoint[0]+(win_x-XSIZE/2)/zoom; 
          npoint[1]=opoint[1]+(win_y-YSIZE/2)/zoom;
 
          zoom=zoom/2;
 
          if(zoom==0)
                    zoom=1;
 
          if(zoom==1) {
 
               npoint[0]=opoint[0]=XSIZE/2;
               npoint[1]=opoint[1]=YSIZE/2;
 
                      }
 
        }
   
 
else if(button==Button1) {
 
/* zoom  */
          
          npoint[0]=opoint[0]+(win_x-XSIZE/2)/zoom; 
          npoint[1]=opoint[1]+(win_y-YSIZE/2)/zoom; 
 
          zoom=zoom*2;
 
       }  
 
/* on zoom or resize current raster set to -1  - 
   if topo reselected redraw
   if already selected redraw */
 
if(add_topo_flag != 1 && add_isohyet_flag != 1 &&
   add_max_flag != 1  && add_min_flag != 1)
                             current_raster=-1;
 
if(add_topo_flag==1 || add_isohyet_flag==1 ||
   add_max_flag==1  || add_min_flag==1)
                             change_map_flag=1;  
 
send_expose();       
 
opoint[0]=npoint[0];
opoint[1]=npoint[1];   
     
}