1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
3*0Sstevel@tonic-gate * Use is subject to license terms.
4*0Sstevel@tonic-gate */
5*0Sstevel@tonic-gate
6*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7*0Sstevel@tonic-gate /* All Rights Reserved */
8*0Sstevel@tonic-gate
9*0Sstevel@tonic-gate /*
10*0Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California.
11*0Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement
12*0Sstevel@tonic-gate * specifies the terms and conditions for redistribution.
13*0Sstevel@tonic-gate */
14*0Sstevel@tonic-gate
15*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
16*0Sstevel@tonic-gate
17*0Sstevel@tonic-gate /*LINTLIBRARY*/
18*0Sstevel@tonic-gate
19*0Sstevel@tonic-gate #ifndef lint
20*0Sstevel@tonic-gate static char
21*0Sstevel@tonic-gate sccsid[] = "@(#)overlay.c 1.9 89/07/13 SMI"; /* from UCB 5.2 86/02/12 */
22*0Sstevel@tonic-gate #endif /* not lint */
23*0Sstevel@tonic-gate
24*0Sstevel@tonic-gate #include "curses.ext"
25*0Sstevel@tonic-gate #include <ctype.h>
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #define min(a, b) ((a) < (b) ? (a) : (b))
28*0Sstevel@tonic-gate #define max(a, b) ((a) > (b) ? (a) : (b))
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate * This routine writes win1 on win2 non-destructively.
32*0Sstevel@tonic-gate */
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate int
overlay(WINDOW * win1,WINDOW * win2)35*0Sstevel@tonic-gate overlay(WINDOW *win1, WINDOW *win2)
36*0Sstevel@tonic-gate {
37*0Sstevel@tonic-gate char *sp, *end;
38*0Sstevel@tonic-gate int x, y, endy, endx, starty, startx;
39*0Sstevel@tonic-gate int y1, y2;
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate #ifdef DEBUG
42*0Sstevel@tonic-gate fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2);
43*0Sstevel@tonic-gate #endif
44*0Sstevel@tonic-gate starty = max(win1->_begy, win2->_begy);
45*0Sstevel@tonic-gate startx = max(win1->_begx, win2->_begx);
46*0Sstevel@tonic-gate endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begy);
47*0Sstevel@tonic-gate endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx);
48*0Sstevel@tonic-gate #ifdef DEBUG
49*0Sstevel@tonic-gate fprintf(outf, "OVERLAY:from (%d,%d) to (%d,%d)\n",
50*0Sstevel@tonic-gate starty, startx, endy, endx);
51*0Sstevel@tonic-gate #endif
52*0Sstevel@tonic-gate if (starty >= endy || startx >= endx)
53*0Sstevel@tonic-gate return (OK);
54*0Sstevel@tonic-gate y1 = starty - win1->_begy;
55*0Sstevel@tonic-gate y2 = starty - win2->_begy;
56*0Sstevel@tonic-gate for (y = starty; y < endy; y++, y1++, y2++) {
57*0Sstevel@tonic-gate end = &win1->_y[y1][endx - win1->_begx];
58*0Sstevel@tonic-gate x = startx - win2->_begx;
59*0Sstevel@tonic-gate for (sp = &win1->_y[y1][startx - win1->_begx]; sp < end; sp++) {
60*0Sstevel@tonic-gate if (!isspace(*sp))
61*0Sstevel@tonic-gate (void) mvwaddch(win2, y2, x, *sp);
62*0Sstevel@tonic-gate x++;
63*0Sstevel@tonic-gate }
64*0Sstevel@tonic-gate }
65*0Sstevel@tonic-gate return (OK);
66*0Sstevel@tonic-gate }
67