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 #pragma ident "%Z%%M% %I% %E% SMI" 16 17 /*LINTLIBRARY*/ 18 19 #ifndef lint 20 static char 21 sccsid[] = "@(#)overwrite.c 1.7 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */ 22 #endif /* not lint */ 23 24 #include "curses.ext" 25 #include <ctype.h> 26 #include <string.h> 27 28 #define min(a, b) ((a) < (b) ? (a) : (b)) 29 #define max(a, b) ((a) > (b) ? (a) : (b)) 30 31 /* 32 * This routine writes win1 on win2 destructively. 33 */ 34 35 int 36 overwrite(WINDOW *win1, WINDOW *win2) 37 { 38 int x, y, endy, endx, starty, startx; 39 40 #ifdef DEBUG 41 fprintf(outf, "OVERWRITE(%0.2o, %0.2o);\n", win1, win2); 42 #endif 43 starty = max(win1->_begy, win2->_begy); 44 startx = max(win1->_begx, win2->_begx); 45 endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begy); 46 endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 47 if (starty >= endy || startx >= endx) 48 return (OK); 49 #ifdef DEBUG 50 fprintf(outf, "OVERWRITE:from (%d,%d) to (%d,%d)\n", 51 starty, startx, endy, endx); 52 #endif 53 x = endx - startx; 54 for (y = starty; y < endy; y++) { 55 (void) memmove(&win2->_y[y - win2->_begy][startx - win2->_begx], 56 &win1->_y[y - win1->_begy][startx - win1->_begx], x); 57 (void) touchline(win2, y, startx - win2->_begx, 58 endx - win2->_begx); 59 } 60 return (OK); 61 } 62