Geom.c revision b4ee4795 
1
2/*
3
4Copyright 1985, 1998  The Open Group
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included
13in all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
19OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21OTHER DEALINGS IN THE SOFTWARE.
22
23Except as contained in this notice, the name of The Open Group shall
24not be used in advertising or otherwise to promote the sale, use or
25other dealings in this Software without prior written authorization
26from The Open Group.
27
28*/
29
30#ifdef HAVE_CONFIG_H
31#include <config.h>
32#endif
33#include "Xlibint.h"
34#include "Xutil.h"
35
36/*
37 * This routine given a user supplied positional argument and a default
38 * argument (fully qualified) will return the position the window should take
39 * returns 0 if there was some problem, else the position bitmask.
40 */
41
42int
43XGeometry (
44     Display *dpy,			/* user's display connection */
45     int screen,			/* screen on which to do computation */
46     _Xconst char *pos,			/* user provided geometry spec */
47     _Xconst char *def,			/* default geometry spec for window */
48     unsigned int bwidth,		/* border width */
49     unsigned int fwidth,		/* size of position units */
50     unsigned int fheight,
51     int xadd,				/* any additional interior space */
52     int yadd,
53     register int *x,			/* always set on successful RETURN */
54     register int *y,			/* always set on successful RETURN */
55     register int *width,		/* always set on successful RETURN */
56     register int *height)		/* always set on successful RETURN */
57{
58	int px, py;			/* returned values from parse */
59	unsigned int pwidth, pheight;	/* returned values from parse */
60	int dx, dy;			/* default values from parse */
61	unsigned int dwidth, dheight;	/* default values from parse */
62	int pmask, dmask;		/* values back from parse */
63
64	pmask = XParseGeometry(pos, &px, &py, &pwidth, &pheight);
65	dmask = XParseGeometry(def, &dx, &dy, &dwidth, &dheight);
66
67	/* set default values */
68	*x = (dmask & XNegative) ?
69	    DisplayWidth(dpy, screen)  + dx - dwidth * fwidth -
70	        2 * bwidth - xadd : dx;
71	*y = (dmask & YNegative) ?
72	    DisplayHeight(dpy, screen) + dy - dheight * fheight -
73	        2 * bwidth - yadd : dy;
74	*width  = dwidth;
75	*height = dheight;
76
77	if (pmask & WidthValue)  *width  = pwidth;
78	if (pmask & HeightValue) *height = pheight;
79
80	if (pmask & XValue)
81	    *x = (pmask & XNegative) ?
82	      DisplayWidth(dpy, screen) + px - *width * fwidth -
83		  2 * bwidth - xadd : px;
84	if (pmask & YValue)
85	    *y = (pmask & YNegative) ?
86	      DisplayHeight(dpy, screen) + py - *height * fheight -
87		  2 * bwidth - yadd : py;
88	return (pmask);
89}
90