360 lines
8.3 KiB
C
360 lines
8.3 KiB
C
/* $NetBSD: add_wch.c,v 1.1 2007/01/21 11:38:59 blymn Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation Inc.
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* All rights reserved.
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*
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* This code is derived from code donated to the NetBSD Foundation
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* by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
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*
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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 NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* 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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__RCSID("$NetBSD: add_wch.c,v 1.1 2007/01/21 11:38:59 blymn Exp $");
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#endif /* not lint */
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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/*
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* add_wch --
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* Add the wide character to the current position in stdscr.
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*
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*/
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int
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add_wch(const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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return wadd_wch(stdscr, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* mvadd_wch --
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* Add the wide character to stdscr at the given location.
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*/
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int
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mvadd_wch(int y, int x, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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return mvwadd_wch(stdscr, y, x, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* mvwadd_wch --
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* Add the character to the given window at the given location.
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*/
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int
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mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wadd_wch(win, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* wadd_wch --
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* Add the wide character to the current position in the
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* given window.
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*
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*/
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int
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wadd_wch(WINDOW *win, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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int x = win->curx, y = win->cury, sx = 0, ex = 0, cw = 0, i = 0,
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newx = 0;
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__LDATA *lp = &win->lines[y]->line[x], *tp = NULL;
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nschar_t *np = NULL, *tnp = NULL;
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__LINE *lnp = NULL;
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cchar_t cc;
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#ifdef DEBUG
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for (i = 0; i < win->maxy; i++) {
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assert(win->lines[i]->sentinel == SENTINEL_VALUE);
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}
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__CTRACE("[wadd_wch]win(%p)", win);
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#endif
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/* special characters handling */
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lnp = win->lines[y];
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switch (wch->vals[0]) {
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case L'\b':
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if (--x < 0)
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x = 0;
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win->curx = x;
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return OK;
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case L'\r':
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win->curx = 0;
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return OK;
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case L'\n':
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wclrtoeol(win);
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x = win->curx;
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y = win->cury;
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x = 0;
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lnp->flags &= ~__ISPASTEOL;
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if (y == win->scr_b) {
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if (!(win->flags & __SCROLLOK))
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return ERR;
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win->cury = y;
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win->curx = x;
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scroll(win);
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y = win->cury;
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x = win->curx;
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} else {
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y++;
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}
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win->curx = x;
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win->cury = y;
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return OK;
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case L'\t':
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cc.vals[0] = L' ';
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cc.elements = 1;
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cc.attributes = win->wattr;
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for (i = 0; i < 8 - (x % 8); i++) {
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if (wadd_wch(win, &cc) == ERR)
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return ERR;
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}
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return OK;
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}
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/* check for non-spacing character */
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if (!wcwidth(wch->vals[0])) {
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cw = WCOL(*lp);
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if (cw < 0) {
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lp += cw;
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x += cw;
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}
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for (i = 0; i < wch->elements; i++) {
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if (!(np = (nschar_t *) malloc(sizeof(nschar_t))))
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return ERR;;
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np->ch = wch->vals[i];
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np->next = lp->nsp;
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lp->nsp = np;
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}
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lnp->flags |= __ISDIRTY;
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newx = x + win->ch_off;
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if (newx < *lnp->firstchp)
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*lnp->firstchp = newx;
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if (newx > *lnp->lastchp)
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*lnp->lastchp = newx;
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__touchline(win, y, x, x);
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return OK;
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}
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/* check for new line first */
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if (lnp->flags & __ISPASTEOL) {
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x = 0;
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lnp->flags &= ~__ISPASTEOL;
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if (y == win->scr_b) {
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if (!(win->flags & __SCROLLOK))
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return ERR;
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win->cury = y;
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win->curx = x;
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scroll(win);
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y = win->cury;
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x = win->curx;
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} else {
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y++;
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}
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lnp = win->lines[y];
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lp = &win->lines[y]->line[x];
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}
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/* clear out the current character */
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cw = WCOL(*lp);
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if (cw >= 0) {
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sx = x;
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} else {
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for (sx = x - 1; sx >= max(x + cw, 0); sx--) {
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#ifdef DEBUG
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__CTRACE("[wadd_wch]clear current char (%d,%d)",
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y, sx);
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#endif /* DEBUG */
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tp = &win->lines[y]->line[sx];
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tp->ch = (wchar_t) btowc((int) win->bch);
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if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
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return ERR;
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tp->attr = win->battr;
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SET_WCOL(*tp, 1);
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}
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sx = x + cw;
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lnp->flags |= __ISDIRTY;
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newx = sx + win->ch_off;
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if (newx < *lnp->firstchp)
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*lnp->firstchp = newx;
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}
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/* check for enough space before the end of line */
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cw = wcwidth(wch->vals[0]);
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if (cw > win->maxx - x) {
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#ifdef DEBUG
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__CTRACE("[wadd_wch]clear EOL (%d,%d)", y, x);
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#endif /* DEBUG */
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lnp->flags |= __ISDIRTY;
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newx = x + win->ch_off;
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if (newx < *lnp->firstchp)
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*lnp->firstchp = newx;
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for (tp = lp; x < win->maxx; tp++, x++) {
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tp->ch = (wchar_t) btowc((int) win->bch);
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if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
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return ERR;
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tp->attr = win->battr;
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SET_WCOL(*tp, 1);
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}
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newx = win->maxx - 1 + win->ch_off;
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if (newx > *lnp->lastchp)
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*lnp->lastchp = newx;
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__touchline(win, y, sx, (int) win->maxx - 1);
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sx = x = 0;
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if (y == win->scr_b) {
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if (!(win->flags & __SCROLLOK))
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return ERR;
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win->curx = x;
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win->cury = y;
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scroll(win);
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x = win->curx;
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y = win->cury;
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} else {
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y++;
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}
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lp = &win->lines[y]->line[0];
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lnp = win->lines[y];
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}
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win->cury = y;
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/* add spacing character */
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#ifdef DEBUG
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__CTRACE("[wadd_wch]add character (%d,%d)%x",
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y, x, wch->vals[0]);
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#endif /* DEBUG */
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lnp->flags |= __ISDIRTY;
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newx = x + win->ch_off;
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if (newx < *lnp->firstchp)
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*lnp->firstchp = newx;
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if (lp->nsp) {
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np = lp->nsp;
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while (np) {
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tnp = np->next;
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free(np);
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np = tnp;
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}
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lp->nsp = NULL;
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}
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lp->ch = wch->vals[0];
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lp->attr = wch->attributes & WA_ATTRIBUTES;
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SET_WCOL(*lp, cw);
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if (wch->elements > 1) {
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for (i = 1; i < wch->elements; i++) {
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np = (nschar_t *)malloc(sizeof(nschar_t));
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if (!np)
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return ERR;;
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np->ch = wch->vals[i];
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np->next = lp->nsp;
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#ifdef DEBUG
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__CTRACE("[wadd_wch]add non-spacing char 0x%x",
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np->ch);
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#endif /* DEBUG */
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lp->nsp = np;
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}
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}
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#ifdef DEBUG
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__CTRACE("[wadd_wch]non-spacing list header: %p\n", lp->nsp);
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__CTRACE("[wadd_wch]add rest columns (%d:%d)\n",
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sx + 1, sx + cw - 1);
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#endif /* DEBUG */
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for (tp = lp + 1, x = sx + 1; x - sx <= cw - 1; tp++, x++) {
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if (tp->nsp) {
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np = tp->nsp;
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while (np) {
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tnp = np->next;
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free(np);
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np = tnp;
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}
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tp->nsp = NULL;
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}
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tp->ch = wch->vals[0];
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tp->attr = wch->attributes & WA_ATTRIBUTES;
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SET_WCOL(*tp, sx - x);
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}
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if (x == win->maxx) {
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lnp->flags |= __ISPASTEOL;
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newx = win->maxx - 1 + win->ch_off;
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if (newx > *lnp->lastchp)
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*lnp->lastchp = newx;
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__touchline(win, y, sx, (int) win->maxx - 1);
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win->curx = sx;
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} else {
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win->curx = x;
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/* clear the remining of the current characer */
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if (x && x < win->maxx) {
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ex = sx + cw;
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tp = &win->lines[y]->line[ex];
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while (ex < win->maxx && WCOL(*tp) < 0) {
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#ifdef DEBUG
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__CTRACE("[wadd_wch]clear remaining of current char (%d,%d)",
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y, ex);
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#endif /* DEBUG */
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tp->ch = (wchar_t) btowc((int) win->bch);
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if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
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return ERR;
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tp->attr = win->battr;
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SET_WCOL(*tp, 1);
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tp++, ex++;
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}
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newx = ex - 1 + win->ch_off;
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if (newx > *lnp->lastchp)
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*lnp->lastchp = newx;
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__touchline(win, y, sx, ex - 1);
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}
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}
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#ifdef DEBUG
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__CTRACE("add_wch: %d : 0x%x\n", lp->ch, lp->attr);
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#endif /* DEBUG */
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return OK;
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#endif /* HAVE_WCHAR */
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}
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