#include <cairo-xlib.h>
#include <stdlib.h>
#include <X11/Xutil.h>

int main (void)
{
    Display *dpy;
    Screen *scr;
    Window win;
    int screen;
    cairo_surface_t *surface;
    cairo_t *cr;
    char buf[] = "1234567890", c;
    int i, j, k;
    int x, y;

    dpy = XOpenDisplay (NULL);
    if (dpy == NULL)
	return 1;

    screen = DefaultScreen (dpy);
    scr = XScreenOfDisplay (dpy, screen);

    win = XCreateWindow (dpy, DefaultRootWindow (dpy),
			 0, 0, 800, 600, 0,
			 DefaultDepth (dpy, screen),
			 InputOutput,
			 DefaultVisual (dpy, screen),
			 0, NULL);
    XMapWindow (dpy, win);
    XSync (dpy, True);

    surface = cairo_xlib_surface_create (dpy, win,
					 DefaultVisual (dpy, screen),
					 800, 600);

    cr = cairo_create (surface);

    cairo_set_source_rgb (cr, .6, .6, .6);
    cairo_paint (cr);

    cairo_set_source_rgb (cr, .0, .0, .0);
    cairo_select_font_face (cr, "mono",
			    CAIRO_FONT_SLANT_NORMAL,
			    CAIRO_FONT_WEIGHT_NORMAL);
    cairo_set_font_size (cr, 10);

    y = 12;
    for (j = 1; j < 100; j++) {
	    cairo_move_to (cr, 8, y);
	    for (i = 0; i < j; i += 10) {
		    k = 10;
		    if (i + 10 > j)
			    k = j - i;
		    c = buf[k];
		    buf[k] = '\0';
		    cairo_show_text (cr, buf);
		    buf[k] = c;
	    }
	    y += 12;
    }
    cairo_destroy (cr);
    XFlush (dpy);

    pause ();

    return 0;
}