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[] = "@(#)toucholap.c 5.1 (Berkeley) %G%"; | |
| 9 | #endif not lint | |
| 10 | ||
| 08c23e5e JB |
11 | # include "curses.ext" |
| 12 | ||
| 13 | # define min(a,b) (a < b ? a : b) | |
| 14 | # define max(a,b) (a > b ? a : b) | |
| 15 | ||
| 16 | /* | |
| 17 | * Touch, on win2, the part that overlaps with win1. | |
| 18 | * | |
| 08c23e5e JB |
19 | */ |
| 20 | touchoverlap(win1, win2) | |
| 21 | reg WINDOW *win1, *win2; { | |
| 22 | ||
| 23 | reg int x, y, endy, endx, starty, startx; | |
| 24 | ||
| 25 | # ifdef DEBUG | |
| 26 | fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2); | |
| 27 | # endif | |
| 28 | starty = max(win1->_begy, win2->_begy); | |
| 29 | startx = max(win1->_begx, win2->_begx); | |
| 30 | endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); | |
| 31 | endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); | |
| 32 | # ifdef DEBUG | |
| 33 | fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); | |
| 34 | fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n", win1->_begy, win1->_begx, win1->_begy + win1->_maxy, win1->_begx + win1->_maxx); | |
| 35 | fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n", win2->_begy, win2->_begx, win2->_begy + win2->_maxy, win2->_begx + win2->_maxx); | |
| 36 | # endif | |
| 37 | if (starty >= endy || startx >= endx) | |
| 38 | return; | |
| 39 | starty -= win2->_begy; | |
| 40 | startx -= win2->_begx; | |
| 41 | endy -= win2->_begy; | |
| 42 | endx -= win2->_begx; | |
| 43 | endx--; | |
| 44 | for (y = starty; y < endy; y++) | |
| 45 | touchline(win2, y, startx, endx); | |
| 46 | } |