76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 1981, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)overwrite.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* not lint */
|
|
|
|
#include <ctype.h>
|
|
#include <curses.h>
|
|
#include <string.h>
|
|
|
|
/*
|
|
* overwrite --
|
|
* Writes win1 on win2 destructively.
|
|
*/
|
|
int
|
|
overwrite(win1, win2)
|
|
register WINDOW *win1, *win2;
|
|
{
|
|
register int x, y, endy, endx, starty, startx;
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE("overwrite: (%0.2o, %0.2o);\n", win1, win2);
|
|
#endif
|
|
starty = max(win1->begy, win2->begy);
|
|
startx = max(win1->begx, win2->begx);
|
|
endy = min(win1->maxy + win1->begy, win2->maxy + win2->begx);
|
|
endx = min(win1->maxx + win1->begx, win2->maxx + win2->begx);
|
|
if (starty >= endy || startx >= endx)
|
|
return (OK);
|
|
#ifdef DEBUG
|
|
__CTRACE("overwrite: from (%d, %d) to (%d, %d)\n",
|
|
starty, startx, endy, endx);
|
|
#endif
|
|
x = endx - startx;
|
|
for (y = starty; y < endy; y++) {
|
|
(void)memcpy(
|
|
&win2->lines[y - win2->begy]->line[startx - win2->begx],
|
|
&win1->lines[y - win1->begy]->line[startx - win1->begx],
|
|
x * __LDATASIZE);
|
|
__touchline(win2, y, startx - win2->begx, endx - win2->begx,
|
|
0);
|
|
}
|
|
return (OK);
|
|
}
|