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scrsize.c

/*
 * Copyright (C) 1984-2004  Mark Nudelman
 *
 * You may distribute under the terms of either the GNU General Public
 * License or the Less License, as specified in the README file.
 *
 * For more information about less, or for information on how to 
 * contact the author, see the README file.
 */

/*
 * This program is used to determine the screen dimensions on OS/2 systems.
 * Adapted from code written by Kyosuke Tokoro (NBG01720@nifty.ne.jp).
 */

/*
 * When I wrote this routine, I consulted some part of the source code 
 * of the xwininfo utility by X Consortium.
 *
 * Copyright (c) 1987, X Consortium
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the X Consortium shall not
 * be used in advertising or otherwise to promote the sale, use or other
 * dealings in this Software without prior written authorization from the X
 * Consortium.
 */
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdlib.h>
#include <stdio.h>

static int get_winsize(dpy, window, p_width, p_height)
      Display *dpy;
      Window window;
      int *p_width;
      int *p_height;
{
      XWindowAttributes win_attributes;
      XSizeHints hints;
      long longjunk;

      if (!XGetWindowAttributes(dpy, window, &win_attributes))
            return 1;
      if (!XGetWMNormalHints(dpy, window, &hints, &longjunk))
            return 1;
      if (!(hints.flags & PResizeInc))
            return 1;
      if (hints.width_inc == 0 || hints.height_inc == 0)
            return 1;
      if (!(hints.flags & (PBaseSize|PMinSize)))
            return 1;
      if (hints.flags & PBaseSize)
      {
            win_attributes.width -= hints.base_width;
            win_attributes.height -= hints.base_height;
      } else
      {
            win_attributes.width -= hints.min_width;
            win_attributes.height -= hints.min_height;
      }
      *p_width = win_attributes.width / hints.width_inc;
      *p_height = win_attributes.height / hints.height_inc;
      return 0;
}

int main(argc, argv)
      int argc;
      char *argv[];
{
      char *cp;
      Display *dpy;
      int size[2];

      _scrsize(size);
      cp = getenv("WINDOWID");
      if (cp != NULL)
      {
            dpy = XOpenDisplay(NULL);
            if (dpy != NULL)
            {
                  get_winsize(dpy, (Window) atol(cp), &size[0], &size[1]);
                  XCloseDisplay(dpy);
            }
      }
      printf("%i %i\n", size[0], size[1]);
      return (0);
}

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