c77e1d014f
Store ripped off lines in the SCREEN structure so we can repaint then when the terminal is resized. Fix mvwin(3) so it can move windows in the ripped off area.
132 lines
3.6 KiB
C
132 lines
3.6 KiB
C
/* $NetBSD: mvwin.c,v 1.21 2017/01/11 20:43:03 roy 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 1.21 2017/01/11 20:43:03 roy 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, i;
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__LINE *plp;
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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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win->flags |= __ISDERWIN;
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win->derx = dx;
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win->dery = dy;
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x = parent->begx + dx;
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/*
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* Mark the source area for the derwin as changed so it will be
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* copied to the destination window on refresh.
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*/
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for (i = 0; i < win->maxy; i++) {
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plp = parent->alines[i + dy];
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plp->flags = __ISDIRTY;
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if (*plp->firstchp > x)
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*plp->firstchp = x;
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if (*plp->lastchp < x + win->maxx)
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*plp->lastchp = x + win->maxx;
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#ifdef DEBUG
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__CTRACE(__CTRACE_REFRESH, "mvderwin: firstchp = %d, lastchp = %d\n", *plp->firstchp, *plp->lastchp);
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#endif
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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 > win->screen->LINES ||
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bx < 0 || bx + win->maxx > win->screen->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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