#include "copyright.h"

/* $XConsortium: XGeom.c,v 1.5 88/10/06 11:58:52 jim Exp $ */
/* Copyright Massachusetts Institute of Technology 1985 */

#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.
 */

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 *x, *y, *width, *height;	/* always set on successful RETURN */
{
  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);
}