#include "Xroutines.h" 


void SetPixel(environment *  env, int x, int y ){
       
       XDrawPoint (env->disp, XtWindowOfObject(env->db), env->gc, x, y);
}

void DrawLine(int x1, int y1, int x2, int y2, environment * env){
       XDrawLine(env->disp, XtWindowOfObject(env->db), env->gc,x1,y1,x2,y2);
}

void Get_Image_From_Server(environment * env) {
      env->the_screen = XGetImage(env->disp,XtWindowOfObject(env->db),0,0,
		 env->xmax, env->ymax, AllPlanes,XYPixmap);
}

unsigned long Get_Pixel(environment * env, int x,int y){
      if (env->fg == XGetPixel(env->the_screen,x,y)){
	 return(BLACK);
      } else {
	 return(WHITE);
      }
}

void Clear_Screen(environment * env){
     XSetForeground(env->disp,env->gc,env->bg);
     XFillRectangle(env->disp, XtWindowOfObject(env->db),env->gc
	   ,0,0,env->xmax,env->ymax);
     XSetForeground(env->disp,env->gc,env->fg);
}

int Set_Color(environment * env, int color) {

     
     XGCValues  value_return;

     XGetGCValues(env->disp,env->gc,GCForeground,&value_return);


     if (color==WHITE) {
	XSetForeground(env->disp,env->gc,env->bg);
     } else {
	XSetForeground(env->disp,env->gc,env->fg);
     }

     if (value_return.foreground == env->fg) {
	return (1);
     } else {
	return (0);
     }

}

void setup_environment(environment * env){
    int       screen_num;

    env->disp = XtDisplay(env->db);
    screen_num = DefaultScreen(env->disp);
    env->gc = DefaultGC(env->disp,screen_num);
    env->the_screen = NULL;
    env->fg = BlackPixel(env->disp,screen_num);
    env->bg = WhitePixel(env->disp,screen_num);
    XSetForeground(env->disp,env->gc,env->fg);
    XSetBackground(env->disp,env->gc,env->bg);
}