1 /* 2 * Copyright (c) 1981 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)toucholap.c 5.6 (Berkeley) 8/23/92";*/ 36 static char rcsid[] = "$Id: toucholap.c,v 1.3 1993/08/07 05:49:08 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include <curses.h> 40 41 /* 42 * touchoverlap -- 43 * Touch, on win2, the part that overlaps with win1. 44 */ 45 int 46 touchoverlap(win1, win2) 47 register WINDOW *win1, *win2; 48 { 49 register int y, endy, endx, starty, startx; 50 51 #ifdef DEBUG 52 __TRACE("touchoverlap: (%0.2o, %0.2o);\n", win1, win2); 53 #endif 54 starty = max(win1->_begy, win2->_begy); 55 startx = max(win1->_begx, win2->_begx); 56 endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); 57 endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 58 #ifdef DEBUG 59 __TRACE("touchoverlap: from (%d,%d) to (%d,%d)\n", 60 starty, startx, endy, endx); 61 __TRACE("touchoverlap: win1 (%d,%d) to (%d,%d)\n", 62 win1->_begy, win1->_begx, win1->_begy + win1->_maxy, 63 win1->_begx + win1->_maxx); 64 __TRACE("touchoverlap: win2 (%d,%d) to (%d,%d)\n", 65 win2->_begy, win2->_begx, win2->_begy + win2->_maxy, 66 win2->_begx + win2->_maxx); 67 #endif 68 if (starty >= endy || startx >= endx) 69 return (OK); 70 starty -= win2->_begy; 71 startx -= win2->_begx; 72 endy -= win2->_begy; 73 endx -= win2->_begx; 74 for (--endx, y = starty; y < endy; y++) 75 touchline(win2, y, startx, endx); 76 return (OK); 77 } 78