122678Sdist /*
2*67082Sbostic * Copyright (c) 1981, 1993, 1994
361272Sbostic * The Regents of the University of California. All rights reserved.
434677Sbostic *
542655Sbostic * %sccs.include.redist.c%
622678Sdist */
722678Sdist
822678Sdist #ifndef lint
9*67082Sbostic static char sccsid[] = "@(#)overwrite.c 8.2 (Berkeley) 05/04/94";
1055973Sbostic #endif /* not lint */
1122678Sdist
1255973Sbostic #include <ctype.h>
1355984Sbostic #include <string.h>
142259Sarnold
15*67082Sbostic #include "curses.h"
16*67082Sbostic
172259Sarnold /*
1855973Sbostic * overwrite --
1955973Sbostic * Writes win1 on win2 destructively.
202259Sarnold */
2155973Sbostic int
overwrite(win1,win2)222259Sarnold overwrite(win1, win2)
2355973Sbostic register WINDOW *win1, *win2;
2455973Sbostic {
2555973Sbostic register int x, y, endy, endx, starty, startx;
262259Sarnold
2755973Sbostic #ifdef DEBUG
2860058Sbostic __CTRACE("overwrite: (%0.2o, %0.2o);\n", win1, win2);
2955973Sbostic #endif
3056238Selan starty = max(win1->begy, win2->begy);
3156238Selan startx = max(win1->begx, win2->begx);
3256238Selan endy = min(win1->maxy + win1->begy, win2->maxy + win2->begx);
3356238Selan endx = min(win1->maxx + win1->begx, win2->maxx + win2->begx);
3419890Sbloom if (starty >= endy || startx >= endx)
3557472Sbostic return (OK);
3655973Sbostic #ifdef DEBUG
3760058Sbostic __CTRACE("overwrite: from (%d, %d) to (%d, %d)\n",
3855973Sbostic starty, startx, endy, endx);
3955973Sbostic #endif
4019890Sbloom x = endx - startx;
4119890Sbloom for (y = starty; y < endy; y++) {
4258041Selan (void)memcpy(
4356238Selan &win2->lines[y - win2->begy]->line[startx - win2->begx],
4458041Selan &win1->lines[y - win1->begy]->line[startx - win1->begx],
4556647Selan x * __LDATASIZE);
4656650Selan __touchline(win2, y, startx - win2->begx, endx - win2->begx,
4756650Selan 0);
4819890Sbloom }
4957472Sbostic return (OK);
502259Sarnold }
51