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195 lines
5.2 KiB
C
195 lines
5.2 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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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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#ifndef lint
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static char sccsid[] = "@(#)wwsize.c 8.1 (Berkeley) 6/6/93";
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static char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <stdlib.h>
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#include "ww.h"
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/*
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* Resize a window. Should be unattached.
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*/
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wwsize(w, nrow, ncol)
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register struct ww *w;
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{
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register i, j;
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int nline;
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union ww_char **buf = 0;
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char **win = 0;
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short *nvis = 0;
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char **fmap = 0;
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char m;
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/*
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* First allocate new buffers.
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*/
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win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
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if (win == 0)
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goto bad;
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if (w->ww_fmap != 0) {
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fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
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if (fmap == 0)
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goto bad;
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}
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if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) {
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nline = MAX(w->ww_b.nr, nrow);
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buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l,
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nline, ncol, sizeof (union ww_char));
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if (buf == 0)
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goto bad;
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}
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nvis = (short *)malloc((unsigned) nrow * sizeof (short));
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if (nvis == 0) {
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wwerrno = WWE_NOMEM;
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goto bad;
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}
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nvis -= w->ww_w.t;
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/*
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* Copy text buffer.
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*/
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if (buf != 0) {
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int b, r;
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b = w->ww_b.t + nline;
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r = w->ww_b.l + ncol;
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if (ncol < w->ww_b.nc)
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for (i = w->ww_b.t; i < w->ww_b.b; i++)
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for (j = w->ww_b.l; j < r; j++)
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buf[i][j] = w->ww_buf[i][j];
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else
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for (i = w->ww_b.t; i < w->ww_b.b; i++) {
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for (j = w->ww_b.l; j < w->ww_b.r; j++)
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buf[i][j] = w->ww_buf[i][j];
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for (; j < r; j++)
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buf[i][j].c_w = ' ';
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}
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for (; i < b; i++)
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for (j = w->ww_b.l; j < r; j++)
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buf[i][j].c_w = ' ';
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}
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/*
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* Now free the old stuff.
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*/
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wwfree((char **)w->ww_win, w->ww_w.t);
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w->ww_win = win;
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if (buf != 0) {
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wwfree((char **)w->ww_buf, w->ww_b.t);
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w->ww_buf = buf;
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}
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if (w->ww_fmap != 0) {
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wwfree((char **)w->ww_fmap, w->ww_w.t);
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w->ww_fmap = fmap;
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}
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free((char *)(w->ww_nvis + w->ww_w.t));
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w->ww_nvis = nvis;
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/*
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* Set new sizes.
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*/
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/* window */
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w->ww_w.b = w->ww_w.t + nrow;
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w->ww_w.r = w->ww_w.l + ncol;
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w->ww_w.nr = nrow;
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w->ww_w.nc = ncol;
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/* text buffer */
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if (buf != 0) {
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w->ww_b.b = w->ww_b.t + nline;
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w->ww_b.r = w->ww_b.l + ncol;
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w->ww_b.nr = nline;
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w->ww_b.nc = ncol;
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}
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/* scroll */
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if ((i = w->ww_b.b - w->ww_w.b) < 0 ||
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(i = w->ww_cur.r - w->ww_w.b + 1) > 0) {
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w->ww_buf += i;
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w->ww_b.t -= i;
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w->ww_b.b -= i;
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w->ww_cur.r -= i;
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}
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/* interior */
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w->ww_i.b = MIN(w->ww_w.b, wwnrow);
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w->ww_i.r = MIN(w->ww_w.r, wwncol);
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w->ww_i.nr = w->ww_i.b - w->ww_i.t;
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w->ww_i.nc = w->ww_i.r - w->ww_i.l;
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/*
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* Initialize new buffers.
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*/
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/* window */
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m = 0;
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if (w->ww_oflags & WWO_GLASS)
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m |= WWM_GLS;
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if (w->ww_oflags & WWO_REVERSE)
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m |= WWM_REV;
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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for (j = w->ww_w.l; j < w->ww_w.r; j++)
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w->ww_win[i][j] = m;
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/* frame map */
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if (fmap != 0)
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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for (j = w->ww_w.l; j < w->ww_w.r; j++)
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w->ww_fmap[i][j] = 0;
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/* visibility */
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j = m ? 0 : w->ww_w.nc;
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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w->ww_nvis[i] = j;
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/*
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* Put cursor back.
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*/
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if (w->ww_hascursor) {
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w->ww_hascursor = 0;
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wwcursor(w, 1);
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}
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/*
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* Fool with pty.
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*/
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if (w->ww_ispty && w->ww_pty >= 0)
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(void) wwsetttysize(w->ww_pty, nrow, ncol);
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return 0;
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bad:
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if (win != 0)
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wwfree(win, w->ww_w.t);
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if (fmap != 0)
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wwfree(fmap, w->ww_w.t);
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if (buf != 0)
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wwfree((char **)buf, w->ww_b.t);
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if (nvis != 0)
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free((char *)(nvis + w->ww_w.t));
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return -1;
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}
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