417 lines
10 KiB
C
417 lines
10 KiB
C
/* $NetBSD: newwin.c,v 1.46 2008/04/14 20:33:15 jdc 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[] = "@(#)newwin.c 8.3 (Berkeley) 7/27/94";
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#else
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__RCSID("$NetBSD: newwin.c,v 1.46 2008/04/14 20:33:15 jdc Exp $");
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#endif
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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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static WINDOW *__makenew(SCREEN *screen, int nlines, int ncols, int by,
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int bx, int sub, int ispad);
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static WINDOW *__subwin(WINDOW *orig, int nlines, int ncols, int by, int bx,
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int ispad);
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/*
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* derwin --
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* Create a new window in the same manner as subwin but (by, bx)
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* are relative to the origin of window orig instead of absolute.
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*/
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WINDOW *
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derwin(WINDOW *orig, int nlines, int ncols, int by, int bx)
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{
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return __subwin(orig, nlines, ncols, orig->begy + by, orig->begx + bx,
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FALSE);
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}
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/*
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* subpad --
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* Create a new pad in the same manner as subwin but (by, bx)
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* are relative to the origin of window orig instead of absolute.
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*/
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WINDOW *
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subpad(WINDOW *orig, int nlines, int ncols, int by, int bx)
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{
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return __subwin(orig, nlines, ncols, orig->begy + by, orig->begx + bx,
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TRUE);
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}
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/*
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* dupwin --
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* Create a copy of the given window.
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*/
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WINDOW *
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dupwin(WINDOW *win)
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{
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WINDOW *new_one;
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if ((new_one = __newwin(_cursesi_screen, win->maxy, win->maxx,
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win->begy, win->begx, FALSE)) == NULL)
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return NULL;
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overwrite(win, new_one);
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return new_one;
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}
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/*
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* newwin --
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* Allocate space for and set up defaults for a new window.
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*/
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WINDOW *
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newwin(int nlines, int ncols, int by, int bx)
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{
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return __newwin(_cursesi_screen, nlines, ncols, by, bx, FALSE);
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}
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/*
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* newpad --
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* Allocate space for and set up defaults for a new pad.
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*/
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WINDOW *
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newpad(int nlines, int ncols)
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{
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if (nlines < 1 || ncols < 1)
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return NULL;
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return __newwin(_cursesi_screen, nlines, ncols, 0, 0, TRUE);
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}
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WINDOW *
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__newwin(SCREEN *screen, int nlines, int ncols, int by, int bx, int ispad)
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{
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WINDOW *win;
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__LINE *lp;
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int i, j;
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int maxy, maxx;
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__LDATA *sp;
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if (by < 0 || bx < 0)
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return (NULL);
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maxy = nlines > 0 ? nlines : LINES - by + nlines;
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maxx = ncols > 0 ? ncols : COLS - bx + ncols;
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if ((win = __makenew(screen, maxy, maxx, by, bx, 0, ispad)) == NULL)
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return (NULL);
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win->bch = ' ';
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if (__using_color)
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win->battr = __default_color;
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else
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win->battr = 0;
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win->nextp = win;
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win->ch_off = 0;
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win->orig = NULL;
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win->reqy = nlines;
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win->reqx = ncols;
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "newwin: win->ch_off = %d\n", win->ch_off);
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#endif
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for (i = 0; i < maxy; i++) {
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lp = win->lines[i];
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if (ispad)
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lp->flags = __ISDIRTY;
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else
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lp->flags = 0;
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for (sp = lp->line, j = 0; j < maxx; j++, sp++) {
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sp->attr = 0;
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#ifndef HAVE_WCHAR
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sp->ch = win->bch;
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#else
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sp->ch = ( wchar_t )btowc(( int ) win->bch );
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sp->nsp = NULL;
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SET_WCOL( *sp, 1 );
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#endif /* HAVE_WCHAR */
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}
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lp->hash = __hash((char *)(void *)lp->line,
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(size_t) (ncols * __LDATASIZE));
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}
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return (win);
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}
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WINDOW *
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subwin(WINDOW *orig, int nlines, int ncols, int by, int bx)
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{
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return __subwin(orig, nlines, ncols, by, bx, FALSE);
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}
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static WINDOW *
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__subwin(WINDOW *orig, int nlines, int ncols, int by, int bx, int ispad)
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{
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int i;
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__LINE *lp;
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WINDOW *win;
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int maxy, maxx;
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "subwin: (%p, %d, %d, %d, %d, %d)\n",
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orig, nlines, ncols, by, bx, ispad);
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#endif
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if (orig == NULL || orig->orig != NULL)
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return NULL;
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/* Make sure window fits inside the original one. */
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maxy = nlines > 0 ? nlines : orig->maxy + orig->begy - by + nlines;
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maxx = ncols > 0 ? ncols : orig->maxx + orig->begx - bx + ncols;
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if (by < orig->begy || bx < orig->begx
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|| by + maxy > orig->maxy + orig->begy
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|| bx + maxx > orig->maxx + orig->begx)
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return (NULL);
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if ((win = __makenew(_cursesi_screen, maxy, maxx,
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by, bx, 1, ispad)) == NULL)
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return (NULL);
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win->bch = orig->bch;
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win->battr = orig->battr;
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win->reqy = nlines;
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win->reqx = ncols;
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win->nextp = orig->nextp;
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orig->nextp = win;
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win->orig = orig;
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/* Initialize flags here so that refresh can also use __set_subwin. */
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for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++)
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lp->flags = 0;
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__set_subwin(orig, win);
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return (win);
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}
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/*
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* This code is shared with mvwin().
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*/
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void
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__set_subwin(WINDOW *orig, WINDOW *win)
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{
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int 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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win->ch_off = win->begx - orig->begx;
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/* Point line pointers to line space. */
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for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++) {
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win->lines[i] = lp;
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olp = orig->lines[i + win->begy - orig->begy];
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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,
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sizeof( wchar_t ), lp->hash );
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lp->hash = __hash_more( &cp->attr,
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sizeof( wchar_t ), 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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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "__set_subwin: win->ch_off = %d\n",
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win->ch_off);
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#endif
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}
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/*
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* __makenew --
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* Set up a window buffer and returns a pointer to it.
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*/
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static WINDOW *
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__makenew(SCREEN *screen, int nlines, int ncols, int by, int bx, int sub,
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int ispad)
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{
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WINDOW *win;
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__LINE *lp;
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struct __winlist *wlp, *wlp2;
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int i;
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "makenew: (%d, %d, %d, %d)\n",
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nlines, ncols, by, bx);
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#endif
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if (nlines <= 0 || ncols <= 0)
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return NULL;
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if ((win = malloc(sizeof(WINDOW))) == NULL)
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return (NULL);
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "makenew: win = %p\n", win);
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#endif
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/* Set up line pointer array and line space. */
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if ((win->lines = malloc(nlines * sizeof(__LINE *))) == NULL) {
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free(win);
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return NULL;
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}
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if ((win->lspace = malloc(nlines * sizeof(__LINE))) == NULL) {
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free(win->lines);
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free(win);
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return NULL;
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}
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/* Don't allocate window and line space if it's a subwindow */
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if (sub)
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win->wspace = NULL;
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else {
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/*
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* Allocate window space in one chunk.
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*/
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if ((win->wspace =
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malloc(ncols * nlines * sizeof(__LDATA))) == NULL) {
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free(win->lspace);
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free(win->lines);
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free(win);
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return NULL;
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}
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/*
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* Append window to window list.
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*/
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if ((wlp = malloc(sizeof(struct __winlist))) == NULL) {
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free(win->wspace);
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free(win->lspace);
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free(win->lines);
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free(win);
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return NULL;
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}
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wlp->winp = win;
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wlp->nextp = NULL;
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if (screen->winlistp == NULL)
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screen->winlistp = wlp;
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else {
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wlp2 = screen->winlistp;
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while (wlp2->nextp != NULL)
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wlp2 = wlp2->nextp;
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wlp2->nextp = wlp;
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}
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/*
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* Point line pointers to line space, and lines themselves into
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* window space.
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*/
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for (lp = win->lspace, i = 0; i < nlines; i++, lp++) {
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win->lines[i] = lp;
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lp->line = &win->wspace[i * ncols];
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#ifdef DEBUG
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lp->sentinel = SENTINEL_VALUE;
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#endif
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lp->firstchp = &lp->firstch;
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lp->lastchp = &lp->lastch;
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if (ispad) {
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lp->firstch = 0;
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lp->lastch = ncols;
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} else {
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lp->firstch = ncols;
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lp->lastch = 0;
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}
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}
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "makenew: ncols = %d\n", ncols);
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#endif
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win->screen = screen;
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win->cury = win->curx = 0;
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win->maxy = nlines;
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win->maxx = ncols;
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win->reqy = nlines;
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win->reqx = ncols;
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win->begy = by;
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win->begx = bx;
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win->flags = (__IDLINE | __IDCHAR);
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win->delay = -1;
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win->wattr = 0;
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#ifdef HAVE_WCHAR
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win->bnsp = NULL;
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SET_BGWCOL( *win, 1 );
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#endif /* HAVE_WCHAR */
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win->scr_t = 0;
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win->scr_b = win->maxy - 1;
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if (ispad) {
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win->flags |= __ISPAD;
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win->pbegy = 0;
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win->pbegx = 0;
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win->sbegy = 0;
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win->sbegx = 0;
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win->smaxy = 0;
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win->smaxx = 0;
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} else
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__swflags(win);
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#ifdef DEBUG
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__CTRACE(__CTRACE_WINDOW, "makenew: win->wattr = %08x\n", win->wattr);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->flags = %#.4x\n", win->flags);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->maxy = %d\n", win->maxy);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->maxx = %d\n", win->maxx);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->begy = %d\n", win->begy);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->begx = %d\n", win->begx);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->scr_t = %d\n", win->scr_t);
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__CTRACE(__CTRACE_WINDOW, "makenew: win->scr_b = %d\n", win->scr_b);
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#endif
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return (win);
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}
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void
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__swflags(WINDOW *win)
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{
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win->flags &= ~(__ENDLINE | __FULLWIN | __SCROLLWIN | __LEAVEOK);
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if (win->begx + win->maxx == COLS && !(win->flags & __ISPAD)) {
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win->flags |= __ENDLINE;
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if (win->begx == 0 && win->maxy == LINES && win->begy == 0)
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win->flags |= __FULLWIN;
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if (win->begy + win->maxy == LINES)
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win->flags |= __SCROLLWIN;
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}
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}
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