| 1 | # include "curses.ext" |
| 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 destructively. |
| 9 | * |
| 10 | * @(#)overwrite.c 1.4 (Berkeley) %G% |
| 11 | */ |
| 12 | overwrite(win1, win2) |
| 13 | reg WINDOW *win1, *win2; { |
| 14 | |
| 15 | reg char *sp, *end; |
| 16 | reg int x, y, endy, endx, starty, startx; |
| 17 | |
| 18 | # ifdef DEBUG |
| 19 | fprintf(outf, "OVERWRITE(%0.2o, %0.2o);\n", win1, win2); |
| 20 | # endif |
| 21 | starty = max(win1->_begy, win2->_begy); |
| 22 | startx = max(win1->_begx, win2->_begx); |
| 23 | endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); |
| 24 | endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); |
| 25 | if (starty >= endy || startx >= endx) |
| 26 | return; |
| 27 | # ifdef DEBUG |
| 28 | fprintf(outf, "OVERWRITE:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); |
| 29 | # endif |
| 30 | x = endx - startx; |
| 31 | for (y = starty; y < endy; y++) { |
| 32 | bcopy(&win1->_y[y - win1->_begy][startx - win1->_begx], |
| 33 | &win2->_y[y - win2->_begy][startx - win2->_begx], x); |
| 34 | touchline(win2, y, startx - win2->_begx, endx - win2->_begx); |
| 35 | } |
| 36 | } |