150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/* $NetBSD: mvwin.c,v 1.17 2012/09/28 06:03:45 blymn Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mvwin.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: mvwin.c,v 1.17 2012/09/28 06:03:45 blymn Exp $");
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#endif
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#endif /* not lint */
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#include "curses.h"
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#include "curses_private.h"
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/*
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* mvderwin --
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* Move a derived window. This does not change the physical screen
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* coordinates of the subwin, rather maps the characters in the subwin
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* sized part of the parent window starting at dy, dx into the subwin.
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*
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*/
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int
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mvderwin(WINDOW *win, int dy, int dx)
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{
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WINDOW *parent;
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int x, y, i;
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__LINE *lp, *olp;
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#ifdef HAVE_WCHAR
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__LDATA *cp;
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int j;
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nschar_t *np;
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#endif /* HAVE_WCHAR */
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if (win == NULL)
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return ERR;
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parent = win->orig;
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if (parent == NULL)
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return ERR;
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if (((win->maxx + dx) > parent->maxx) ||
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((win->maxy + dy) > parent->maxy))
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return ERR;
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x = parent->begx + dx;
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y = parent->begy + dy;
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win->ch_off = x;
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/* Point the line pointers to line space */
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for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++) {
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lp->flags = __ISDIRTY;
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win->alines[i] = lp;
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olp = parent->alines[i + dy];
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#ifdef DEBUG
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lp->sentinel = SENTINEL_VALUE;
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#endif
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lp->line = &olp->line[win->ch_off];
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lp->firstchp = &olp->firstch;
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lp->lastchp = &olp->lastch;
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#ifndef HAVE_WCHAR
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lp->hash = __hash((char *)(void *)lp->line,
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(size_t) (win->maxx * __LDATASIZE));
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#else
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for (cp = lp->line, j = 0; j < win->maxx; j++, cp++) {
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lp->hash = __hash_more(&cp->ch, sizeof(wchar_t),
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lp->hash);
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lp->hash = __hash_more(&cp->attr, sizeof(wchar_t),
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lp->hash);
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if (cp->nsp) {
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np = cp->nsp;
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while (np) {
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lp->hash = __hash_more(&np->ch,
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sizeof(wchar_t), lp->hash);
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np = np->next;
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}
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}
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}
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#endif /* HAVE_WCHAR */
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}
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return OK;
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}
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/*
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* mvwin --
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* Relocate the starting position of a window.
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*/
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int
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mvwin(WINDOW *win, int by, int bx)
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{
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WINDOW *orig;
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int dy, dx;
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if (by < 0 || by + win->maxy > LINES || bx < 0 || bx + win->maxx > COLS)
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return (ERR);
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dy = by - win->begy;
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dx = bx - win->begx;
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orig = win->orig;
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if (orig == NULL) {
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orig = win;
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do {
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win->begy += dy;
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win->begx += dx;
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__swflags(win);
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win = win->nextp;
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} while (win != orig);
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} else {
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if (by < orig->begy || win->maxy + dy > orig->maxy)
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return (ERR);
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if (bx < orig->begx || win->maxx + dx > orig->maxx)
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return (ERR);
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win->begy = by;
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win->begx = bx;
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__swflags(win);
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__set_subwin(orig, win);
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}
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__touchwin(win);
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return (OK);
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}
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