1 /* $NetBSD: toucholap.c,v 1.12 2000/05/20 15:12:15 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)toucholap.c 8.2 (Berkeley) 5/4/94"; 40 #else 41 __RCSID("$NetBSD: toucholap.c,v 1.12 2000/05/20 15:12:15 mycroft Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include "curses.h" 46 #include "curses_private.h" 47 48 /* 49 * touchoverlap -- 50 * Touch, on win2, the part that overlaps with win1. 51 */ 52 int 53 touchoverlap(WINDOW *win1, WINDOW *win2) 54 { 55 int y, endy, endx, starty, startx; 56 57 #ifdef DEBUG 58 __CTRACE("touchoverlap: (%0.2o, %0.2o);\n", win1, win2); 59 #endif 60 starty = max(win1->begy, win2->begy); 61 startx = max(win1->begx, win2->begx); 62 endy = min(win1->maxy + win1->begy, win2->maxy + win2->begx); 63 endx = min(win1->maxx + win1->begx, win2->maxx + win2->begx); 64 #ifdef DEBUG 65 __CTRACE("touchoverlap: from (%d,%d) to (%d,%d)\n", 66 starty, startx, endy, endx); 67 __CTRACE("touchoverlap: win1 (%d,%d) to (%d,%d)\n", 68 win1->begy, win1->begx, win1->begy + win1->maxy, 69 win1->begx + win1->maxx); 70 __CTRACE("touchoverlap: win2 (%d,%d) to (%d,%d)\n", 71 win2->begy, win2->begx, win2->begy + win2->maxy, 72 win2->begx + win2->maxx); 73 #endif 74 if (starty >= endy || startx >= endx) 75 return (OK); 76 starty -= win2->begy; 77 startx -= win2->begx; 78 endy -= win2->begy; 79 endx -= win2->begx; 80 for (--endx, y = starty; y < endy; y++) 81 __touchline(win2, y, startx, endx); 82 return (OK); 83 } 84