/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#ifndef lint
static char
sccsid[] = "@(#)toucholap.c 1.4 89/08/03 SMI"; /* from UCB 5.1 85/06/07 */
#endif /* not lint */
#include "curses.ext"
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
/*
* Touch, on win2, the part that overlaps with win1.
*/
int
touchoverlap(WINDOW *win1, WINDOW *win2)
{
int y, endy, endx, starty, startx;
#ifdef DEBUG
fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2);
#endif
starty = max(win1->_begy, win2->_begy);
startx = max(win1->_begx, win2->_begx);
endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begy);
endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx);
#ifdef DEBUG
fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n",
starty, startx, endy, endx);
fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n",
win1->_begy, win1->_begx, win1->_begy + win1->_maxy,
win1->_begx + win1->_maxx);
fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n",
win2->_begy, win2->_begx, win2->_begy + win2->_maxy,
win2->_begx + win2->_maxx);
#endif
if (starty >= endy || startx >= endx)
return (OK);
starty -= win2->_begy;
startx -= win2->_begx;
endy -= win2->_begy;
endx -= win2->_begx;
endx--;
for (y = starty; y < endy; y++)
(void) touchline(win2, y, startx, endx);
return (OK);
}