NetBSD/lib/libcurses/newwin.c

249 lines
6.4 KiB
C
Raw Normal View History

1999-06-23 07:26:02 +04:00
/* $NetBSD: newwin.c,v 1.12 1999/06/23 03:26:02 christos Exp $ */
1997-07-22 11:36:20 +04:00
1993-03-21 12:45:37 +03:00
/*
1994-08-18 01:51:41 +04:00
* Copyright (c) 1981, 1993, 1994
* The Regents of the University of California. All rights reserved.
1993-03-21 12:45:37 +03:00
*
* 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.
*/
1997-07-22 11:36:20 +04:00
#include <sys/cdefs.h>
1993-03-21 12:45:37 +03:00
#ifndef lint
1997-07-22 11:36:20 +04:00
#if 0
1994-08-18 01:51:41 +04:00
static char sccsid[] = "@(#)newwin.c 8.3 (Berkeley) 7/27/94";
1997-07-22 11:36:20 +04:00
#else
1999-06-23 07:26:02 +04:00
__RCSID("$NetBSD: newwin.c,v 1.12 1999/06/23 03:26:02 christos Exp $");
1997-07-22 11:36:20 +04:00
#endif
#endif /* not lint */
1993-03-21 12:45:37 +03:00
1993-08-07 09:48:37 +04:00
#include <stdlib.h>
1993-03-21 12:45:37 +03:00
1994-08-18 01:51:41 +04:00
#include "curses.h"
#undef nl /* Don't need it here, and it interferes. */
1993-03-21 12:45:37 +03:00
static WINDOW *__makenew __P((int, int, int, int, int));
void __set_subwin __P((WINDOW *, WINDOW *));
1993-03-21 12:45:37 +03:00
1993-08-07 09:48:37 +04:00
/*
* newwin --
* Allocate space for and set up defaults for a new window.
*/
1993-03-21 12:45:37 +03:00
WINDOW *
newwin(nl, nc, by, bx)
int nl, nc, by, bx;
1993-03-21 12:45:37 +03:00
{
1998-02-03 22:12:13 +03:00
WINDOW *win;
__LINE *lp;
int i, j;
1998-02-03 22:12:13 +03:00
__LDATA *sp;
1993-03-21 12:45:37 +03:00
if (nl == 0)
nl = LINES - by;
if (nc == 0)
nc = COLS - bx;
if ((win = __makenew(nl, nc, by, bx, 0)) == NULL)
1993-08-07 09:48:37 +04:00
return (NULL);
win->nextp = win;
win->ch_off = 0;
win->orig = NULL;
win->delay = -1;
1993-08-07 09:48:37 +04:00
#ifdef DEBUG
__CTRACE("newwin: win->ch_off = %d\n", win->ch_off);
1993-08-07 09:48:37 +04:00
#endif
for (i = 0; i < nl; i++) {
lp = win->lines[i];
lp->flags = 0;
for (sp = lp->line, j = 0; j < nc; j++, sp++) {
sp->ch = ' ';
sp->attr = 0;
}
1999-06-23 07:26:02 +04:00
lp->hash = __hash((char *)(void *)lp->line,
(int) (nc * __LDATASIZE));
}
1993-08-07 09:48:37 +04:00
return (win);
1993-03-21 12:45:37 +03:00
}
WINDOW *
subwin(orig, nl, nc, by, bx)
1998-02-03 22:12:13 +03:00
WINDOW *orig;
int by, bx, nl, nc;
1993-03-21 12:45:37 +03:00
{
int i;
__LINE *lp;
1998-02-03 22:12:13 +03:00
WINDOW *win;
1993-03-21 12:45:37 +03:00
1993-08-07 09:48:37 +04:00
/* Make sure window fits inside the original one. */
#ifdef DEBUG
__CTRACE("subwin: (%0.2o, %d, %d, %d, %d)\n", orig, nl, nc, by, bx);
1993-08-07 09:48:37 +04:00
#endif
if (by < orig->begy || bx < orig->begx
|| by + nl > orig->maxy + orig->begy
|| bx + nc > orig->maxx + orig->begx)
1993-08-07 09:48:37 +04:00
return (NULL);
1993-03-21 12:45:37 +03:00
if (nl == 0)
nl = orig->maxy + orig->begy - by;
1993-03-21 12:45:37 +03:00
if (nc == 0)
nc = orig->maxx + orig->begx - bx;
if ((win = __makenew(nl, nc, by, bx, 1)) == NULL)
1993-08-07 09:48:37 +04:00
return (NULL);
win->nextp = orig->nextp;
orig->nextp = win;
win->orig = orig;
/* Initialize flags here so that refresh can also use __set_subwin. */
for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++)
lp->flags = 0;
1993-08-07 09:48:37 +04:00
__set_subwin(orig, win);
return (win);
1993-03-21 12:45:37 +03:00
}
/*
1993-08-07 09:48:37 +04:00
* This code is shared with mvwin().
1993-03-21 12:45:37 +03:00
*/
1993-08-07 09:48:37 +04:00
void
__set_subwin(orig, win)
1998-02-03 22:12:13 +03:00
WINDOW *orig, *win;
1993-03-21 12:45:37 +03:00
{
int i;
__LINE *lp, *olp;
win->ch_off = win->begx - orig->begx;
/* Point line pointers to line space. */
for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++) {
win->lines[i] = lp;
olp = orig->lines[i + win->begy - orig->begy];
lp->line = &olp->line[win->begx - orig->begx];
lp->firstchp = &olp->firstch;
lp->lastchp = &olp->lastch;
1999-06-23 07:26:02 +04:00
lp->hash = __hash((char *)(void *)lp->line,
(int) (win->maxx * __LDATASIZE));
}
1993-03-21 12:45:37 +03:00
1993-08-07 09:48:37 +04:00
#ifdef DEBUG
__CTRACE("__set_subwin: win->ch_off = %d\n", win->ch_off);
1993-08-07 09:48:37 +04:00
#endif
1993-03-21 12:45:37 +03:00
}
/*
* __makenew --
1993-08-07 09:48:37 +04:00
* Set up a window buffer and returns a pointer to it.
1993-03-21 12:45:37 +03:00
*/
static WINDOW *
__makenew(nl, nc, by, bx, sub)
int by, bx, nl, nc;
int sub;
1993-08-07 09:48:37 +04:00
{
1998-02-03 22:12:13 +03:00
WINDOW *win;
__LINE *lp;
int i;
1993-03-21 12:45:37 +03:00
1993-08-07 09:48:37 +04:00
#ifdef DEBUG
__CTRACE("makenew: (%d, %d, %d, %d)\n", nl, nc, by, bx);
1993-08-07 09:48:37 +04:00
#endif
if ((win = malloc(sizeof(*win))) == NULL)
return (NULL);
#ifdef DEBUG
__CTRACE("makenew: nl = %d\n", nl);
1993-08-07 09:48:37 +04:00
#endif
/* Set up line pointer array and line space. */
if ((win->lines = malloc(nl * sizeof(__LINE *))) == NULL) {
1993-03-21 12:45:37 +03:00
free(win);
return NULL;
}
if ((win->lspace = malloc(nl * sizeof(__LINE))) == NULL) {
free(win);
free(win->lines);
return NULL;
}
/* Don't allocate window and line space if it's a subwindow */
if (!sub) {
/*
* Allocate window space in one chunk.
*/
if ((win->wspace =
malloc(nc * nl * sizeof(__LDATA))) == NULL) {
free(win->lines);
free(win->lspace);
free(win);
return NULL;
}
/*
* Point line pointers to line space, and lines themselves into
* window space.
*/
for (lp = win->lspace, i = 0; i < nl; i++, lp++) {
win->lines[i] = lp;
lp->line = &win->wspace[i * nc];
lp->firstchp = &lp->firstch;
lp->lastchp = &lp->lastch;
lp->firstch = 0;
lp->lastch = 0;
}
1993-03-21 12:45:37 +03:00
}
1993-08-07 09:48:37 +04:00
#ifdef DEBUG
__CTRACE("makenew: nc = %d\n", nc);
1993-08-07 09:48:37 +04:00
#endif
win->cury = win->curx = 0;
win->maxy = nl;
win->maxx = nc;
win->begy = by;
win->begx = bx;
win->flags = 0;
1993-08-07 09:48:37 +04:00
__swflags(win);
#ifdef DEBUG
__CTRACE("makenew: win->flags = %0.2o\n", win->flags);
__CTRACE("makenew: win->maxy = %d\n", win->maxy);
__CTRACE("makenew: win->maxx = %d\n", win->maxx);
__CTRACE("makenew: win->begy = %d\n", win->begy);
__CTRACE("makenew: win->begx = %d\n", win->begx);
1993-08-07 09:48:37 +04:00
#endif
return (win);
1993-03-21 12:45:37 +03:00
}
1993-08-07 09:48:37 +04:00
void
__swflags(win)
1998-02-03 22:12:13 +03:00
WINDOW *win;
1993-03-21 12:45:37 +03:00
{
1994-08-18 01:51:41 +04:00
win->flags &= ~(__ENDLINE | __FULLWIN | __SCROLLWIN | __LEAVEOK);
if (win->begx + win->maxx == COLS) {
win->flags |= __ENDLINE;
1994-08-18 01:51:41 +04:00
if (win->begx == 0 && win->maxy == LINES && win->begy == 0)
win->flags |= __FULLWIN;
if (win->begy + win->maxy == LINES)
win->flags |= __SCROLLWIN;
1993-03-21 12:45:37 +03:00
}
}