projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 87c6fcf8 DF |
1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef lint | |
| 8 | static char sccsid[] = "@(#)overwrite.c 5.1 (Berkeley) %G%"; | |
| 9 | #endif not lint | |
| 10 | ||
| 421683f2 | 11 | # include "curses.ext" |
| 52f06ac3 | 12 | # include <ctype.h> |
| b17f6be0 KA |
13 | |
| 14 | # define min(a,b) (a < b ? a : b) | |
| 52f06ac3 | 15 | # define max(a,b) (a > b ? a : b) |
| b17f6be0 KA |
16 | |
| 17 | /* | |
| 18 | * This routine writes win1 on win2 destructively. | |
| 19 | * | |
| b17f6be0 KA |
20 | */ |
| 21 | overwrite(win1, win2) | |
| 22 | reg WINDOW *win1, *win2; { | |
| 23 | ||
| 52f06ac3 JB |
24 | reg char *sp, *end; |
| 25 | reg int x, y, endy, endx, starty, startx; | |
| b17f6be0 KA |
26 | |
| 27 | # ifdef DEBUG | |
| 52f06ac3 | 28 | fprintf(outf, "OVERWRITE(%0.2o, %0.2o);\n", win1, win2); |
| b17f6be0 | 29 | # endif |
| 52f06ac3 JB |
30 | starty = max(win1->_begy, win2->_begy); |
| 31 | startx = max(win1->_begx, win2->_begx); | |
| 32 | endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); | |
| 33 | endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); | |
| 34 | if (starty >= endy || startx >= endx) | |
| 35 | return; | |
| b17f6be0 | 36 | # ifdef DEBUG |
| 52f06ac3 | 37 | fprintf(outf, "OVERWRITE:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); |
| b17f6be0 | 38 | # endif |
| 52f06ac3 JB |
39 | x = endx - startx; |
| 40 | for (y = starty; y < endy; y++) { | |
| 41 | bcopy(&win1->_y[y - win1->_begy][startx - win1->_begx], | |
| 42 | &win2->_y[y - win2->_begy][startx - win2->_begx], x); | |
| 43 | touchline(win2, y, startx - win2->_begx, endx - win2->_begx); | |
| 44 | } | |
| b17f6be0 | 45 | } |