mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-22 07:09:54 +00:00
115 lines
2.5 KiB
C
115 lines
2.5 KiB
C
/* Allocate X colors. Used for testing with dense colormaps.
|
|
|
|
Copyright (C) 2001-2024 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Emacs.
|
|
|
|
GNU Emacs is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or (at
|
|
your option) any later version.
|
|
|
|
GNU Emacs is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
|
|
#include <X11/Xlib.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
void
|
|
fatal (const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, fmt);
|
|
vfprintf (stderr, fmt, ap);
|
|
fputc ('\n', stderr);
|
|
va_end (ap);
|
|
exit (1);
|
|
}
|
|
|
|
void
|
|
usage (const char *progname)
|
|
{
|
|
fprintf (stderr, "Usage %s options\n", progname);
|
|
fprintf (stderr, "-n NCOLORS allocate NCOLORS colors\n");
|
|
exit (1);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
Display *dpy;
|
|
int opt, ncolors = 0, i;
|
|
XColor *allocated;
|
|
int nallocated;
|
|
XColor color;
|
|
Colormap cmap;
|
|
|
|
while ((opt = getopt (argc, argv, "n:")) != EOF)
|
|
switch (opt)
|
|
{
|
|
case 'n':
|
|
ncolors = atoi (optarg);
|
|
break;
|
|
|
|
case '?':
|
|
usage (argv[0]);
|
|
}
|
|
|
|
if (ncolors == 0)
|
|
usage (argv[0]);
|
|
|
|
dpy = XOpenDisplay ("");
|
|
if (dpy == NULL)
|
|
fatal ("Cannot open display");
|
|
cmap = DefaultColormap (dpy, 0);
|
|
|
|
allocated = malloc (ncolors * sizeof *allocated);
|
|
nallocated = 0;
|
|
memset (&color, 0, sizeof color);
|
|
|
|
while (nallocated < ncolors
|
|
&& color.red < 65536)
|
|
{
|
|
allocated[nallocated] = color;
|
|
if (XAllocColor (dpy, cmap, &allocated[nallocated]))
|
|
{
|
|
for (i = 0; i < nallocated; ++i)
|
|
if (allocated[i].red == allocated[nallocated].red
|
|
&& allocated[i].green == allocated[nallocated].green
|
|
&& allocated[i].blue == allocated[nallocated].blue)
|
|
break;
|
|
|
|
if (i == nallocated)
|
|
{
|
|
printf ("allocated %d/%d/%d\n",
|
|
allocated[nallocated].red,
|
|
allocated[nallocated].green,
|
|
allocated[nallocated].blue);
|
|
++nallocated;
|
|
}
|
|
}
|
|
|
|
++color.red;
|
|
++color.green;
|
|
++color.blue;
|
|
}
|
|
|
|
fprintf (stderr, "Waiting. Press ^C to stop.\n");
|
|
while (1)
|
|
sleep (10);
|
|
|
|
XCloseDisplay (dpy);
|
|
return 0;
|
|
}
|