[unix-history] / usr / src / lib / libcurses / id_subwins.c

/*
 * Copyright (c) 1981 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)id_subwins.c	5.3 (Berkeley) %G%";
#endif /* not lint */

# include	"curses.ext"

/*
 * _id_subwins:
 *	Re-sync the pointers to _y for all the subwindows.
 *
 */
_id_subwins(orig)
register WINDOW	*orig;
{
	register WINDOW	*win;
	register int	realy;
	register int	y, oy, x;

	realy = orig->_begy + orig->_cury;
	for (win = orig->_nextp; win != orig; win = win->_nextp) {
		/*
		 * If the window ends before our current position,
		 * don't need to do anything.
		 */
		if (win->_begy + win->_maxy <= realy)
			continue;

		oy = orig->_cury;
		for (y = realy - win->_begy; y < win->_maxy; y++, oy++)
			win->_y[y] = &orig->_y[oy][win->_ch_off];
	}
}
Commit	Line	Data
6e1c93d0	1	/*
2f14f200 KB	2	* Copyright (c) 1981 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
a399f6c8 KB	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
6e1c93d0 DF	16	*/
	17
	18	#ifndef lint
a399f6c8	19	static char sccsid[] = "@(#)id_subwins.c 5.3 (Berkeley) %G%";
2f14f200	20	#endif /* not lint */
6e1c93d0	21
cda9c8f5 JB	22	# include "curses.ext"
	23
	24	/*
	25	* _id_subwins:
	26	* Re-sync the pointers to _y for all the subwindows.
	27	*
cda9c8f5 JB	28	*/
	29	_id_subwins(orig)
	30	register WINDOW *orig;
	31	{
	32	register WINDOW *win;
	33	register int realy;
	34	register int y, oy, x;
	35
	36	realy = orig->_begy + orig->_cury;
	37	for (win = orig->_nextp; win != orig; win = win->_nextp) {
	38	/*
	39	* If the window ends before our current position,
	40	* don't need to do anything.
	41	*/
	42	if (win->_begy + win->_maxy <= realy)
	43	continue;
	44
	45	oy = orig->_cury;
	46	for (y = realy - win->_begy; y < win->_maxy; y++, oy++)
	47	win->_y[y] = &orig->_y[oy][win->_ch_off];
	48	}
	49	}