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Annotation of src/usr.bin/less/scrsize.c, Revision 1.1.1.1

1.1       millert     1: /*
                      2:  * Copyright (C) 1984-2002  Mark Nudelman
                      3:  *
                      4:  * You may distribute under the terms of either the GNU General Public
                      5:  * License or the Less License, as specified in the README file.
                      6:  *
                      7:  * For more information about less, or for information on how to
                      8:  * contact the author, see the README file.
                      9:  */
                     10:
                     11: /*
                     12:  * This program is used to determine the screen dimensions on OS/2 systems.
                     13:  * Adapted from code written by Kyosuke Tokoro (NBG01720@nifty.ne.jp).
                     14:  */
                     15:
                     16: /*
                     17:  * When I wrote this routine, I consulted some part of the source code
                     18:  * of the xwininfo utility by X Consortium.
                     19:  *
                     20:  * Copyright (c) 1987, X Consortium
                     21:  *
                     22:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                     23:  * of this software and associated documentation files (the "Software"), to
                     24:  * deal in the Software without restriction, including without limitation the
                     25:  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
                     26:  * sell copies of the Software, and to permit persons to whom the Software is
                     27:  * furnished to do so, subject to the following conditions:
                     28:  *
                     29:  * The above copyright notice and this permission notice shall be included in
                     30:  * all copies or substantial portions of the Software.
                     31:  *
                     32:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     33:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     34:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
                     35:  * X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
                     36:  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
                     37:  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
                     38:  *
                     39:  * Except as contained in this notice, the name of the X Consortium shall not
                     40:  * be used in advertising or otherwise to promote the sale, use or other
                     41:  * dealings in this Software without prior written authorization from the X
                     42:  * Consortium.
                     43:  */
                     44: #include <X11/Xlib.h>
                     45: #include <X11/Xutil.h>
                     46: #include <stdlib.h>
                     47: #include <stdio.h>
                     48:
                     49: static int get_winsize(dpy, window, p_width, p_height)
                     50:        Display *dpy;
                     51:        Window window;
                     52:        int *p_width;
                     53:        int *p_height;
                     54: {
                     55:        XWindowAttributes win_attributes;
                     56:        XSizeHints hints;
                     57:        long longjunk;
                     58:
                     59:        if (!XGetWindowAttributes(dpy, window, &win_attributes))
                     60:                return 1;
                     61:        if (!XGetWMNormalHints(dpy, window, &hints, &longjunk))
                     62:                return 1;
                     63:        if (!(hints.flags & PResizeInc))
                     64:                return 1;
                     65:        if (hints.width_inc == 0 || hints.height_inc == 0)
                     66:                return 1;
                     67:        if (!(hints.flags & (PBaseSize|PMinSize)))
                     68:                return 1;
                     69:        if (hints.flags & PBaseSize)
                     70:        {
                     71:                win_attributes.width -= hints.base_width;
                     72:                win_attributes.height -= hints.base_height;
                     73:        } else
                     74:        {
                     75:                win_attributes.width -= hints.min_width;
                     76:                win_attributes.height -= hints.min_height;
                     77:        }
                     78:        *p_width = win_attributes.width / hints.width_inc;
                     79:        *p_height = win_attributes.height / hints.height_inc;
                     80:        return 0;
                     81: }
                     82:
                     83: int main(argc, argv)
                     84:        int argc;
                     85:        char *argv[];
                     86: {
                     87:        char *cp;
                     88:        Display *dpy;
                     89:        int size[2];
                     90:
                     91:        _scrsize(size);
                     92:        cp = getenv("WINDOWID");
                     93:        if (cp != NULL)
                     94:        {
                     95:                dpy = XOpenDisplay(NULL);
                     96:                if (dpy != NULL)
                     97:                {
                     98:                        get_winsize(dpy, (Window) atol(cp), &size[0], &size[1]);
                     99:                        XCloseDisplay(dpy);
                    100:                }
                    101:        }
                    102:        printf("%i %i\n", size[0], size[1]);
                    103:        return (0);
                    104: }