Commit | Line | Data |
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421683f2 | 1 | # include "curses.ext" |
d50ec87c KA |
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 | * | |
afe690b7 | 10 | * %G% (Berkeley) @(#)overlay.c 1.3 |
d50ec87c KA |
11 | */ |
12 | overlay(win1, win2) | |
13 | reg WINDOW *win1, *win2; { | |
14 | ||
15 | reg char *sp, *end; | |
afe690b7 | 16 | reg int x, y, endy, endx, starty, startx; |
d50ec87c KA |
17 | |
18 | # ifdef DEBUG | |
19 | fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2); | |
20 | # endif | |
afe690b7 KA |
21 | starty = max(win1->_begy, win2->_begy) - win1->_begy; |
22 | startx = max(win1->_begx, win2->_begx) - win1->_begx; | |
23 | endy = min(win1->_maxy, win2->_maxy) - win1->_begy - 1; | |
24 | endx = min(win1->_maxx, win2->_maxx) - win1->_begx - 1; | |
d50ec87c KA |
25 | for (y = starty; y < endy; y++) { |
26 | end = &win1->_y[y][endx]; | |
27 | x = startx + win1->_begx; | |
28 | for (sp = &win1->_y[y][startx]; sp <= end; sp++) { | |
29 | if (!isspace(*sp)) | |
30 | mvwaddch(win2, y + win1->_begy, x, *sp); | |
31 | x++; | |
32 | } | |
33 | } | |
34 | } |