projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 87c6fcf8 | 1 | /* |
| 2f14f200 KB |
2 | * Copyright (c) 1981 Regents of the University of California. |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms are permitted | |
| a399f6c8 KB |
6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, | |
| 8 | * advertising materials, and other materials related to such | |
| 9 | * distribution and use acknowledge that the software was developed | |
| 10 | * by the University of California, Berkeley. The name of the | |
| 11 | * University may not be used to endorse or promote products derived | |
| 12 | * from this software without specific prior written permission. | |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 87c6fcf8 DF |
16 | */ |
| 17 | ||
| 18 | #ifndef lint | |
| a399f6c8 | 19 | static char sccsid[] = "@(#)overwrite.c 5.3 (Berkeley) %G%"; |
| 2f14f200 | 20 | #endif /* not lint */ |
| 87c6fcf8 | 21 | |
| 421683f2 | 22 | # include "curses.ext" |
| 52f06ac3 | 23 | # include <ctype.h> |
| b17f6be0 KA |
24 | |
| 25 | # define min(a,b) (a < b ? a : b) | |
| 52f06ac3 | 26 | # define max(a,b) (a > b ? a : b) |
| b17f6be0 KA |
27 | |
| 28 | /* | |
| 29 | * This routine writes win1 on win2 destructively. | |
| 30 | * | |
| b17f6be0 KA |
31 | */ |
| 32 | overwrite(win1, win2) | |
| 33 | reg WINDOW *win1, *win2; { | |
| 34 | ||
| 52f06ac3 JB |
35 | reg char *sp, *end; |
| 36 | reg int x, y, endy, endx, starty, startx; | |
| b17f6be0 KA |
37 | |
| 38 | # ifdef DEBUG | |
| 52f06ac3 | 39 | fprintf(outf, "OVERWRITE(%0.2o, %0.2o);\n", win1, win2); |
| b17f6be0 | 40 | # endif |
| 52f06ac3 JB |
41 | starty = max(win1->_begy, win2->_begy); |
| 42 | startx = max(win1->_begx, win2->_begx); | |
| 43 | endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); | |
| 44 | endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); | |
| 45 | if (starty >= endy || startx >= endx) | |
| 46 | return; | |
| b17f6be0 | 47 | # ifdef DEBUG |
| 52f06ac3 | 48 | fprintf(outf, "OVERWRITE:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); |
| b17f6be0 | 49 | # endif |
| 52f06ac3 JB |
50 | x = endx - startx; |
| 51 | for (y = starty; y < endy; y++) { | |
| 52 | bcopy(&win1->_y[y - win1->_begy][startx - win1->_begx], | |
| 53 | &win2->_y[y - win2->_begy][startx - win2->_begx], x); | |
| 54 | touchline(win2, y, startx - win2->_begx, endx - win2->_begx); | |
| 55 | } | |
| b17f6be0 | 56 | } |