181 lines
4.7 KiB
C
181 lines
4.7 KiB
C
/* $NetBSD: touchwin.c,v 1.15 2000/05/20 15:12:15 mycroft 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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[] = "@(#)touchwin.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: touchwin.c,v 1.15 2000/05/20 15:12:15 mycroft 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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* is_linetouched --
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* Indicate if line has been touched or not.
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*/
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bool
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is_linetouched(WINDOW *win, int line)
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{
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if (line > win->maxy)
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return FALSE;
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return ((win->lines[line]->flags & __ISDIRTY) != 0);
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}
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/*
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* Touch count lines starting at start. This is the SUS v2 compliant
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* version.
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*/
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int
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touchline(WINDOW *win, int start, int count)
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{
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return wtouchln(win, start, count, 1);
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}
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/*
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* is_wintouched --
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* Check if the window has been touched.
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*/
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bool
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is_wintouched(WINDOW *win)
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{
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int y, maxy;
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maxy = win->maxy;
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for (y = 0; y < maxy; y++) {
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if (is_linetouched(win, y) == TRUE)
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return TRUE;
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}
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return FALSE;
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}
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/*
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* touchwin --
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* Make it look like the whole window has been changed.
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*/
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int
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touchwin(WINDOW *win)
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{
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#ifdef DEBUG
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__CTRACE("touchwin: (%0.2o)\n", win);
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#endif
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return wtouchln(win, 0, win->maxy, 1);
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}
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/*
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* untouchwin --
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* Make it look like the window has not been changed.
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*/
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int
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untouchwin(WINDOW *win)
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{
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return wtouchln(win, 0, win->maxy, 0);
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}
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/*
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* wtouchln --
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* If changed is 1 then touch n lines starting at line. If changed
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* is 0 then mark the lines as unchanged.
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*/
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int
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wtouchln(WINDOW *win, int line, int n, int changed)
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{
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int y;
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__LINE *wlp;
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for (y = line; y < line + n; y++) {
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if (changed == 1)
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__touchline(win, y, 0, (int) win->maxx - 1);
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else {
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wlp = win->lines[y];
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if (*wlp->firstchp >= win->ch_off &&
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*wlp->firstchp < win->maxx + win->ch_off)
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*wlp->firstchp = win->maxx + win->ch_off;
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if (*wlp->lastchp >= win->ch_off &&
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*wlp->lastchp < win->maxx + win->ch_off)
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*wlp->lastchp = win->ch_off;
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wlp->flags &= ~__ISDIRTY;
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}
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}
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return OK;
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}
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int
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__touchwin(WINDOW *win)
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{
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int y, maxy;
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#ifdef DEBUG
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__CTRACE("touchwin: (%0.2o)\n", win);
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#endif
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maxy = win->maxy;
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for (y = 0; y < maxy; y++)
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__touchline(win, y, 0, (int) win->maxx - 1);
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return (OK);
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}
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int
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__touchline(WINDOW *win, int y, int sx, int ex)
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{
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#ifdef DEBUG
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__CTRACE("touchline: (%0.2o, %d, %d, %d)\n", win, y, sx, ex);
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__CTRACE("touchline: first = %d, last = %d\n",
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*win->lines[y]->firstchp, *win->lines[y]->lastchp);
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#endif
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sx += win->ch_off;
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ex += win->ch_off;
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if (!(win->lines[y]->flags & __ISDIRTY))
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win->lines[y]->flags |= __ISDIRTY;
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/* firstchp/lastchp are shared between parent window and sub-window. */
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if (*win->lines[y]->firstchp > sx)
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*win->lines[y]->firstchp = sx;
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if (*win->lines[y]->lastchp < ex)
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*win->lines[y]->lastchp = ex;
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#ifdef DEBUG
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__CTRACE("touchline: first = %d, last = %d\n",
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*win->lines[y]->firstchp, *win->lines[y]->lastchp);
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#endif
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return (OK);
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}
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