LE CRABER (UNIX-LINUX)

#include <stdio.h>
#include <X11/Xlib.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>


int main (int argc, char **argv) {
 Display *d;
 Window f, wnul;
 GC gc;
 Pixmap tmp;
 int nul, depth, ymax, xmax;
 int src_x=0, src_y=0;
 int i, *inc, incr;

 if ((d = XOpenDisplay(NULL)) == NULL) {
   printf("Echec de la connexion au serveur X\n");
   return -1;
 }

 f = 0;

 if (argc == 3 && strcmp(argv[1], "-id") == 0) {
   sscanf(argv[2], "%x", &f);
   XGetGeometry(d, f, &wnul, &nul, &nul, &xmax,
                &ymax, &nul, &depth);
   printf("Id : %x, %dx%d, %dbpp\n", f, xmax, ymax, depth);
   incr = 20;
   inc = (int *)malloc((xmax/incr)*sizeof(int));
   srand(time(NULL));
   for (i=0 ; i<xmax/incr ; i++) {
     inc[i] = (rand()%8) + 2;
   }
 }

 if (f == 0)
   return 0;

 tmp = XCreatePixmap(d, f, xmax, ymax, depth);
 gc = DefaultGC(d, DefaultScreen(d));

 for (;;) {
   for (src_x=0, i=0 ; src_x<xmax ; src_x=src_x+incr, i++) {
     /*      if (src_y < 0) {
       src_y = -src_y;
       XCopyArea(d, f, tmp, gc, src_x, src_y, inc, ymax-src_y, src_x, 0);
       XCopyArea(d, f, tmp, gc, src_x, 0, inc, src_y, src_x, ymax-src_y);
       }else { }*/
     src_y = inc[i];
     XCopyArea(d, f, tmp, gc, src_x, 0, incr, ymax-src_y, src_x, src_y);
     XCopyArea(d, f, tmp, gc, src_x, ymax-src_y, incr, src_y, src_x, 0);
   }
   XCopyArea(d, tmp, f, gc, 0, 0, xmax, ymax, 0, 0);
   XFlush(d);
   /*usleep(10000);*/
 }

 XCloseDisplay(d);
 return 0;
}