freebsd-dev/contrib/less/scrsize.c
Robert Watson 1ea316270f Currently, less(1) uses K&R prototypes, which both fails to provide useful
compiler-time type checking, and also causes problems for targets where
multiple incompatible calling conventions may be selected based on argument
types.  This change switches less(1) to ANSI prototypes.

While there, we also remove use of "register", and attempt to use "const" a
bit better now that the compiler can check argument types.

Reviewed by:	cem, emaste
MFC after:	3 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D10152
2017-03-31 21:29:43 +00:00

98 lines
3.0 KiB
C

/*
* Copyright (C) 1984-2015 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, 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(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(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);
}