#include <stdio.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <X11/Xlib.h>
#include <locale.h>

Display *d;
Window w;
Screen s;

char *font = "-misc-fixed-medium-r-normal--20-*-iso10646-1";
int x = 200;
int y = 200;

static void usage(void)
{
fprintf(stderr, "usage: xtext [-f font] [-x xoff] [-y yoff] text\n");
exit(1);
}

int main(int argc, char **argv)
{
XEvent evt;
XFontStruct *fontInfo;
GC gc;
XSetWindowAttributes attr;
char c, *str;

setlocale(LC_ALL, "");

while ((c = getopt(argc, argv, ":f:x:y:")) != -1) {
switch (c) {
case 'f':
font = (char *)malloc(strlen(optarg) + 1);
strcpy(font, optarg);
break;
case 'x':
x = atoi(optarg);
break;
case 'y':
y = atoi(optarg);
break;
case '?':
case ':':
default:
usage();
}
}

if ((argc - optind) < 1)
usage();

str = (char *)malloc(strlen(argv[optind]) + 1);
strcpy(str, argv[optind]);

d = XOpenDisplay(NULL);

w = XCreateSimpleWindow(d, DefaultRootWindow(d), 0, 0,
1024, 768, 0, BlackPixel(d, 0), WhitePixel(d, 0));

if (! w) {
printf("Error creating window!\n");
exit(1);
}

attr.event_mask = KeyPressMask;
XChangeWindowAttributes(d, w, CWEventMask, &attr);
XStoreName(d, w, "XText");

XMapWindow(d, w);
XMoveWindow(d, w, 0, 0);

fontInfo = XLoadQueryFont(d, font);
if (! fontInfo) {
fprintf(stderr, "Error loading font!\n");
exit(1);
}

/*
printf("min_byte1: %d\n", fontInfo->min_byte1);
printf("max_byte1: %d\n", fontInfo->max_byte1);
printf("min_char_or_byte2: %d\n", fontInfo->min_char_or_byte2);
printf("max_char_or_byte2: %d\n", fontInfo->max_char_or_byte2);
*/

gc = XCreateGC(d, w, 0, NULL);

XSetForeground(d, gc, BlackPixel(d, 0));
XSetBackground(d, gc, WhitePixel(d, 0));
XSetFont(d, gc, fontInfo->fid);

XDrawString(d, w, gc, x, y, str, strlen(str));

while(1) {
while(XPending(d)) {
XNextEvent(d, &evt);
if (evt.type == KeyPress)
goto end;
}
usleep(1000);
}

end:
XDestroyWindow(d, w);
XCloseDisplay(d);
return 0;
}