1 /* 2 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 7 /* All Rights Reserved */ 8 9 /* 10 * Copyright (c) 1980 Regents of the University of California. 11 * All rights reserved. The Berkeley software License Agreement 12 * specifies the terms and conditions for redistribution. 13 */ 14 15 /*LINTLIBRARY*/ 16 17 #ifndef lint 18 static char 19 sccsid[] = "@(#)toucholap.c 1.4 89/08/03 SMI"; /* from UCB 5.1 85/06/07 */ 20 #endif /* not lint */ 21 22 #include "curses.ext" 23 24 #define min(a, b) ((a) < (b) ? (a) : (b)) 25 #define max(a, b) ((a) > (b) ? (a) : (b)) 26 27 /* 28 * Touch, on win2, the part that overlaps with win1. 29 */ 30 31 int 32 touchoverlap(WINDOW *win1, WINDOW *win2) 33 { 34 int y, endy, endx, starty, startx; 35 36 #ifdef DEBUG 37 fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2); 38 #endif 39 starty = max(win1->_begy, win2->_begy); 40 startx = max(win1->_begx, win2->_begx); 41 endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begy); 42 endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 43 #ifdef DEBUG 44 fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n", 45 starty, startx, endy, endx); 46 fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n", 47 win1->_begy, win1->_begx, win1->_begy + win1->_maxy, 48 win1->_begx + win1->_maxx); 49 fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n", 50 win2->_begy, win2->_begx, win2->_begy + win2->_maxy, 51 win2->_begx + win2->_maxx); 52 #endif 53 if (starty >= endy || startx >= endx) 54 return (OK); 55 starty -= win2->_begy; 56 startx -= win2->_begx; 57 endy -= win2->_begy; 58 endx -= win2->_begx; 59 endx--; 60 for (y = starty; y < endy; y++) 61 (void) touchline(win2, y, startx, endx); 62 return (OK); 63 } 64