/* $Xorg: Geom.c,v 1.3 2000/08/17 19:44:34 cpqbld Exp $ */

/*

Copyright 1985, 1998  The Open Group

All Rights Reserved.

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 OPEN GROUP 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 Open Group 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 Open Group.

*/

#include "Xlibint.h"
#include "Xutil.h"

/*
 * This routine given a user supplied positional argument and a default
 * argument (fully qualified) will return the position the window should take
 * returns 0 if there was some problem, else the position bitmask.
 */

#if NeedFunctionPrototypes
int XGeometry (
     Display *dpy,			/* user's display connection */
     int screen,			/* screen on which to do computation */
     _Xconst char *pos,			/* user provided geometry spec */
     _Xconst char *def,			/* default geometry spec for window */
     unsigned int bwidth,		/* border width */
     unsigned int fwidth,		/* size of position units */
     unsigned int fheight,
     int xadd,				/* any additional interior space */
     int yadd,
     register int *x,			/* always set on successful RETURN */
     register int *y,			/* always set on successful RETURN */
     register int *width,		/* always set on successful RETURN */
     register int *height)		/* always set on successful RETURN */
#else
int XGeometry (dpy, screen, pos, def, bwidth, fwidth, fheight, xadd, yadd, x, y, width, height)
     Display *dpy;			/* user's display connection */
     int screen;			/* screen on which to do computation */
     char *pos;				/* user provided geometry spec */
     char *def;				/* default geometry spec for window */
     unsigned int bwidth;		/* border width */
     unsigned int fwidth, fheight;	/* size of position units */
     int xadd, yadd;			/* any additional interior space */
     register int *x, *y, *width, *height;/* always set on successful RETURN */
#endif
{
	int px, py;			/* returned values from parse */
	unsigned int pwidth, pheight;	/* returned values from parse */
	int dx, dy;			/* default values from parse */
	unsigned int dwidth, dheight;	/* default values from parse */
	int pmask, dmask;		/* values back from parse */

	pmask = XParseGeometry(pos, &px, &py, &pwidth, &pheight);
	dmask = XParseGeometry(def, &dx, &dy, &dwidth, &dheight);

	/* set default values */
	*x = (dmask & XNegative) ? 
	    DisplayWidth(dpy, screen)  + dx - dwidth * fwidth - 
	        2 * bwidth - xadd : dx;
	*y = (dmask & YNegative) ? 
	    DisplayHeight(dpy, screen) + dy - dheight * fheight - 
	        2 * bwidth - yadd : dy;
	*width  = dwidth;
	*height = dheight;

	if (pmask & WidthValue)  *width  = pwidth;
	if (pmask & HeightValue) *height = pheight;

	if (pmask & XValue)
	    *x = (pmask & XNegative) ?
	      DisplayWidth(dpy, screen) + px - *width * fwidth - 
		  2 * bwidth - xadd : px;
	if (pmask & YValue)
	    *y = (pmask & YNegative) ?
	      DisplayHeight(dpy, screen) + py - *height * fheight - 
		  2 * bwidth - yadd : py;
	return (pmask);
}