[dragonfly.git] / usr.bin / window / wwsize.c

/*	@(#)wwsize.c	8.1 (Berkeley) 6/6/93	*/
/*	$NetBSD: wwsize.c,v 1.9 2006/05/02 22:24:05 christos Exp $	*/

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdlib.h>
#include "ww.h"

/*
 * Resize a window.  Should be unattached.
 */
int
wwsize(struct ww *w, int nrow, int ncol)
{
	int i, j;
	int nline = 0;
	union ww_char **buf = 0;
	char **win = 0;
	short *nvis = 0;
	char **fmap = 0;
	char m;

	/*
	 * First allocate new buffers.
	 */
	win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
	if (win == 0)
		goto bad;
	if (w->ww_fmap != 0) {
		fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
		if (fmap == 0)
			goto bad;
	}
	if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) {
		nline = MAX(w->ww_b.nr, nrow);
		buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l,
			nline, ncol, sizeof (union ww_char));
		if (buf == 0)
			goto bad;
	}
	nvis = (short *)malloc((unsigned) nrow * sizeof (short));
	if (nvis == 0) {
		wwerrno = WWE_NOMEM;
		goto bad;
	}
	nvis -= w->ww_w.t;
	/*
	 * Copy text buffer.
	 */
	if (buf != 0) {
		int b, r;

		b = w->ww_b.t + nline;
		r = w->ww_b.l + ncol;
		if (ncol < w->ww_b.nc)
			for (i = w->ww_b.t; i < w->ww_b.b; i++)
				for (j = w->ww_b.l; j < r; j++)
					buf[i][j] = w->ww_buf[i][j];
		else
			for (i = w->ww_b.t; i < w->ww_b.b; i++) {
				for (j = w->ww_b.l; j < w->ww_b.r; j++)
					buf[i][j] = w->ww_buf[i][j];
				for (; j < r; j++)
					buf[i][j].c_w = ' ';
			}
		for (; i < b; i++)
			for (j = w->ww_b.l; j < r; j++)
				buf[i][j].c_w = ' ';
	}
	/*
	 * Now free the old stuff.
	 */
	wwfree((char **)w->ww_win, w->ww_w.t);
	w->ww_win = win;
	if (buf != 0) {
		wwfree((char **)w->ww_buf, w->ww_b.t);
		w->ww_buf = buf;
	}
	if (w->ww_fmap != 0) {
		wwfree((char **)w->ww_fmap, w->ww_w.t);
		w->ww_fmap = fmap;
	}
	free((char *)(w->ww_nvis + w->ww_w.t));
	w->ww_nvis = nvis;
	/*
	 * Set new sizes.
	 */
		/* window */
	w->ww_w.b = w->ww_w.t + nrow;
	w->ww_w.r = w->ww_w.l + ncol;
	w->ww_w.nr = nrow;
	w->ww_w.nc = ncol;
		/* text buffer */
	if (buf != 0) {
		w->ww_b.b = w->ww_b.t + nline;
		w->ww_b.r = w->ww_b.l + ncol;
		w->ww_b.nr = nline;
		w->ww_b.nc = ncol;
	}
		/* scroll */
	if ((i = w->ww_b.b - w->ww_w.b) < 0 ||
	    (i = w->ww_cur.r - w->ww_w.b + 1) > 0) {
		w->ww_buf += i;
		w->ww_b.t -= i;
		w->ww_b.b -= i;
		w->ww_cur.r -= i;
	}
		/* interior */
	w->ww_i.b = MIN(w->ww_w.b, wwnrow);
	w->ww_i.r = MIN(w->ww_w.r, wwncol);
	w->ww_i.nr = w->ww_i.b - w->ww_i.t;
	w->ww_i.nc = w->ww_i.r - w->ww_i.l;
	/*
	 * Initialize new buffers.
	 */
		/* window */
	m = 0;
	if (w->ww_oflags & WWO_GLASS)
		m |= WWM_GLS;
	if (w->ww_oflags & WWO_REVERSE)
		m |= WWM_REV;
	for (i = w->ww_w.t; i < w->ww_w.b; i++)
		for (j = w->ww_w.l; j < w->ww_w.r; j++)
			w->ww_win[i][j] = m;
		/* frame map */
	if (fmap != 0)
		for (i = w->ww_w.t; i < w->ww_w.b; i++)
			for (j = w->ww_w.l; j < w->ww_w.r; j++)
				w->ww_fmap[i][j] = 0;
		/* visibility */
	j = m ? 0 : w->ww_w.nc;
	for (i = w->ww_w.t; i < w->ww_w.b; i++)
		w->ww_nvis[i] = j;
	/*
	 * Put cursor back.
	 */
	if (ISSET(w->ww_wflags, WWW_HASCURSOR)) {
		CLR(w->ww_wflags, WWW_HASCURSOR);
		wwcursor(w, 1);
	}
	/*
	 * Fool with pty.
	 */
	if (w->ww_type == WWT_PTY && w->ww_pty >= 0)
		(void) wwsetttysize(w->ww_pty, nrow, ncol);
	return 0;
bad:
	if (win != 0)
		wwfree(win, w->ww_w.t);
	if (fmap != 0)
		wwfree(fmap, w->ww_w.t);
	if (buf != 0)
		wwfree((char **)buf, w->ww_b.t);
	return -1;
}
Commit	Line	Data
2c872e05	1	/* @(#)wwsize.c 8.1 (Berkeley) 6/6/93 */
abecab39 SW	2	/* $NetBSD: wwsize.c,v 1.9 2006/05/02 22:24:05 christos Exp $ */
abecab39 SW	3
984263bc MD	4	/*
	5	* Copyright (c) 1983, 1993
	6	* The Regents of the University of California. All rights reserved.
	7	*
	8	* This code is derived from software contributed to Berkeley by
	9	* Edward Wang at The University of California, Berkeley.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions and the following disclaimer.
	16	* 2. Redistributions in binary form must reproduce the above copyright
	17	* notice, this list of conditions and the following disclaimer in the
	18	* documentation and/or other materials provided with the distribution.
abecab39	19	* 3. Neither the name of the University nor the names of its contributors
984263bc MD	20	* may be used to endorse or promote products derived from this software
	21	* without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	* SUCH DAMAGE.
	34	*/
	35
984263bc MD	36	#include <stdlib.h>
	37	#include "ww.h"
	38
	39	/*
	40	* Resize a window. Should be unattached.
	41	*/
abecab39 SW	42	int
abecab39 SW	43	wwsize(struct ww *w, int nrow, int ncol)
984263bc	44	{
abecab39 SW	45	int i, j;
abecab39 SW	46	int nline = 0;
984263bc MD	47	union ww_char **buf = 0;
	48	char **win = 0;
	49	short *nvis = 0;
	50	char **fmap = 0;
	51	char m;
	52
	53	/*
	54	* First allocate new buffers.
	55	*/
	56	win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
	57	if (win == 0)
	58	goto bad;
	59	if (w->ww_fmap != 0) {
	60	fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
	61	if (fmap == 0)
	62	goto bad;
	63	}
	64	if (nrow > w->ww_b.nr \|\| ncol > w->ww_b.nc) {
	65	nline = MAX(w->ww_b.nr, nrow);
	66	buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l,
	67	nline, ncol, sizeof (union ww_char));
	68	if (buf == 0)
	69	goto bad;
	70	}
	71	nvis = (short )malloc((unsigned) nrow sizeof (short));
	72	if (nvis == 0) {
	73	wwerrno = WWE_NOMEM;
	74	goto bad;
	75	}
	76	nvis -= w->ww_w.t;
	77	/*
	78	* Copy text buffer.
	79	*/
	80	if (buf != 0) {
	81	int b, r;
	82
	83	b = w->ww_b.t + nline;
	84	r = w->ww_b.l + ncol;
	85	if (ncol < w->ww_b.nc)
	86	for (i = w->ww_b.t; i < w->ww_b.b; i++)
	87	for (j = w->ww_b.l; j < r; j++)
	88	buf[i][j] = w->ww_buf[i][j];
	89	else
	90	for (i = w->ww_b.t; i < w->ww_b.b; i++) {
	91	for (j = w->ww_b.l; j < w->ww_b.r; j++)
	92	buf[i][j] = w->ww_buf[i][j];
	93	for (; j < r; j++)
	94	buf[i][j].c_w = ' ';
	95	}
	96	for (; i < b; i++)
	97	for (j = w->ww_b.l; j < r; j++)
	98	buf[i][j].c_w = ' ';
	99	}
	100	/*
	101	* Now free the old stuff.
	102	*/
	103	wwfree((char **)w->ww_win, w->ww_w.t);
	104	w->ww_win = win;
	105	if (buf != 0) {
	106	wwfree((char **)w->ww_buf, w->ww_b.t);
	107	w->ww_buf = buf;
	108	}
	109	if (w->ww_fmap != 0) {
	110	wwfree((char **)w->ww_fmap, w->ww_w.t);
111	w->ww_fmap = fmap;
112	}
113	free((char *)(w->ww_nvis + w->ww_w.t));
114	w->ww_nvis = nvis;
115	/*
116	* Set new sizes.
117	*/
118	/* window */
119	w->ww_w.b = w->ww_w.t + nrow;
120	w->ww_w.r = w->ww_w.l + ncol;
121	w->ww_w.nr = nrow;
122	w->ww_w.nc = ncol;
123	/* text buffer */
124	if (buf != 0) {
125	w->ww_b.b = w->ww_b.t + nline;
126	w->ww_b.r = w->ww_b.l + ncol;
127	w->ww_b.nr = nline;
128	w->ww_b.nc = ncol;
129	}
130	/* scroll */
131	if ((i = w->ww_b.b - w->ww_w.b) < 0 \|\|
132	(i = w->ww_cur.r - w->ww_w.b + 1) > 0) {
133	w->ww_buf += i;
134	w->ww_b.t -= i;
135	w->ww_b.b -= i;
136	w->ww_cur.r -= i;
137	}
138	/* interior */
139	w->ww_i.b = MIN(w->ww_w.b, wwnrow);
140	w->ww_i.r = MIN(w->ww_w.r, wwncol);
141	w->ww_i.nr = w->ww_i.b - w->ww_i.t;
142	w->ww_i.nc = w->ww_i.r - w->ww_i.l;
143	/*
144	* Initialize new buffers.
145	*/
146	/* window */
147	m = 0;
148	if (w->ww_oflags & WWO_GLASS)
149	m \|= WWM_GLS;
150	if (w->ww_oflags & WWO_REVERSE)
151	m \|= WWM_REV;
152	for (i = w->ww_w.t; i < w->ww_w.b; i++)
153	for (j = w->ww_w.l; j < w->ww_w.r; j++)
154	w->ww_win[i][j] = m;
155	/* frame map */
156	if (fmap != 0)
157	for (i = w->ww_w.t; i < w->ww_w.b; i++)
158	for (j = w->ww_w.l; j < w->ww_w.r; j++)
159	w->ww_fmap[i][j] = 0;
160	/* visibility */
161	j = m ? 0 : w->ww_w.nc;
162	for (i = w->ww_w.t; i < w->ww_w.b; i++)
163	w->ww_nvis[i] = j;
164	/*
165	* Put cursor back.
166	*/
abecab39 SW	167	if (ISSET(w->ww_wflags, WWW_HASCURSOR)) {
abecab39 SW	168	CLR(w->ww_wflags, WWW_HASCURSOR);
984263bc MD	169	wwcursor(w, 1);
	170	}
	171	/*
	172	* Fool with pty.
	173	*/
abecab39	174	if (w->ww_type == WWT_PTY && w->ww_pty >= 0)
984263bc MD	175	(void) wwsetttysize(w->ww_pty, nrow, ncol);
	176	return 0;
	177	bad:
	178	if (win != 0)
	179	wwfree(win, w->ww_w.t);
	180	if (fmap != 0)
	181	wwfree(fmap, w->ww_w.t);
	182	if (buf != 0)
	183	wwfree((char **)buf, w->ww_b.t);
984263bc MD	184	return -1;
984263bc MD	185	}