Commit | Line | Data |
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d50ec87c KA |
1 | # include "curses.h" |
2 | # include <ctype.h> | |
3 | ||
4 | # define min(a,b) (a < b ? a : b) | |
5 | # define max(a,b) (a < b ? a : b) | |
6 | ||
7 | /* | |
8 | * This routine writes win1 on win2 non-destructively. | |
9 | * | |
4b9ccde7 | 10 | * 1/26/81 (Berkeley) @(#)overlay.c 1.1 |
d50ec87c KA |
11 | */ |
12 | overlay(win1, win2) | |
13 | reg WINDOW *win1, *win2; { | |
14 | ||
15 | reg char *sp, *end; | |
16 | reg int x, y, endy, endx, starty, startx, y_top, | |
17 | y_bot, x_left, x_right; | |
18 | ||
19 | # ifdef DEBUG | |
20 | fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2); | |
21 | # endif | |
22 | y_top = max(win1->_begy, win2->_begy); | |
23 | y_bot = min(win1->_maxy, win2->_maxy); | |
24 | x_left = max(win1->_begx, win2->_begx); | |
25 | x_right = min(win1->_maxx, win2->_maxx); | |
26 | starty = y_top - win1->_begy; | |
27 | startx = x_left - win1->_begx; | |
28 | endy = y_bot - win1->_begy; | |
29 | endx = x_right - win1->_begx; | |
30 | for (y = starty; y < endy; y++) { | |
31 | end = &win1->_y[y][endx]; | |
32 | x = startx + win1->_begx; | |
33 | for (sp = &win1->_y[y][startx]; sp <= end; sp++) { | |
34 | if (!isspace(*sp)) | |
35 | mvwaddch(win2, y + win1->_begy, x, *sp); | |
36 | x++; | |
37 | } | |
38 | } | |
39 | } |