Annotation of src/usr.bin/window/wwsize.c, Revision 1.6
1.6 ! millert 1: /* $OpenBSD: wwsize.c,v 1.5 1997/02/25 00:05:08 downsj Exp $ */
1.3 niklas 2: /* $NetBSD: wwsize.c,v 1.5 1996/02/08 20:45:11 mycroft Exp $ */
1.1 deraadt 3:
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.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwsize.c 8.1 (Berkeley) 6/6/93";
43: #else
1.6 ! millert 44: static char rcsid[] = "$OpenBSD: wwsize.c,v 1.5 1997/02/25 00:05:08 downsj Exp $";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
1.6 ! millert 48: #include <stdlib.h>
1.1 deraadt 49: #include "ww.h"
50:
51: /*
52: * Resize a window. Should be unattached.
53: */
54: wwsize(w, nrow, ncol)
55: register struct ww *w;
56: {
57: register i, j;
58: int nline;
59: union ww_char **buf = 0;
60: char **win = 0;
61: short *nvis = 0;
62: char **fmap = 0;
63: char m;
64:
65: /*
66: * First allocate new buffers.
67: */
68: win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
69: if (win == 0)
70: goto bad;
71: if (w->ww_fmap != 0) {
72: fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
73: if (fmap == 0)
74: goto bad;
75: }
76: if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) {
77: nline = MAX(w->ww_b.nr, nrow);
78: buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l,
79: nline, ncol, sizeof (union ww_char));
80: if (buf == 0)
81: goto bad;
82: }
1.6 ! millert 83: nvis = (short *)malloc(nrow * sizeof (short));
1.1 deraadt 84: if (nvis == 0) {
85: wwerrno = WWE_NOMEM;
86: goto bad;
87: }
88: nvis -= w->ww_w.t;
89: /*
90: * Copy text buffer.
91: */
92: if (buf != 0) {
93: int b, r;
94:
95: b = w->ww_b.t + nline;
96: r = w->ww_b.l + ncol;
97: if (ncol < w->ww_b.nc)
98: for (i = w->ww_b.t; i < w->ww_b.b; i++)
99: for (j = w->ww_b.l; j < r; j++)
100: buf[i][j] = w->ww_buf[i][j];
101: else
102: for (i = w->ww_b.t; i < w->ww_b.b; i++) {
103: for (j = w->ww_b.l; j < w->ww_b.r; j++)
104: buf[i][j] = w->ww_buf[i][j];
105: for (; j < r; j++)
106: buf[i][j].c_w = ' ';
107: }
108: for (; i < b; i++)
109: for (j = w->ww_b.l; j < r; j++)
110: buf[i][j].c_w = ' ';
111: }
112: /*
113: * Now free the old stuff.
114: */
115: wwfree((char **)w->ww_win, w->ww_w.t);
116: w->ww_win = win;
117: if (buf != 0) {
118: wwfree((char **)w->ww_buf, w->ww_b.t);
119: w->ww_buf = buf;
120: }
121: if (w->ww_fmap != 0) {
122: wwfree((char **)w->ww_fmap, w->ww_w.t);
123: w->ww_fmap = fmap;
124: }
125: free((char *)(w->ww_nvis + w->ww_w.t));
126: w->ww_nvis = nvis;
127: /*
128: * Set new sizes.
129: */
130: /* window */
131: w->ww_w.b = w->ww_w.t + nrow;
132: w->ww_w.r = w->ww_w.l + ncol;
133: w->ww_w.nr = nrow;
134: w->ww_w.nc = ncol;
135: /* text buffer */
136: if (buf != 0) {
137: w->ww_b.b = w->ww_b.t + nline;
138: w->ww_b.r = w->ww_b.l + ncol;
139: w->ww_b.nr = nline;
140: w->ww_b.nc = ncol;
141: }
142: /* scroll */
143: if ((i = w->ww_b.b - w->ww_w.b) < 0 ||
144: (i = w->ww_cur.r - w->ww_w.b + 1) > 0) {
145: w->ww_buf += i;
146: w->ww_b.t -= i;
147: w->ww_b.b -= i;
148: w->ww_cur.r -= i;
149: }
150: /* interior */
151: w->ww_i.b = MIN(w->ww_w.b, wwnrow);
152: w->ww_i.r = MIN(w->ww_w.r, wwncol);
153: w->ww_i.nr = w->ww_i.b - w->ww_i.t;
154: w->ww_i.nc = w->ww_i.r - w->ww_i.l;
155: /*
156: * Initialize new buffers.
157: */
158: /* window */
159: m = 0;
160: if (w->ww_oflags & WWO_GLASS)
161: m |= WWM_GLS;
162: if (w->ww_oflags & WWO_REVERSE)
163: m |= WWM_REV;
164: for (i = w->ww_w.t; i < w->ww_w.b; i++)
165: for (j = w->ww_w.l; j < w->ww_w.r; j++)
166: w->ww_win[i][j] = m;
167: /* frame map */
168: if (fmap != 0)
169: for (i = w->ww_w.t; i < w->ww_w.b; i++)
170: for (j = w->ww_w.l; j < w->ww_w.r; j++)
171: w->ww_fmap[i][j] = 0;
172: /* visibility */
173: j = m ? 0 : w->ww_w.nc;
174: for (i = w->ww_w.t; i < w->ww_w.b; i++)
175: w->ww_nvis[i] = j;
176: /*
177: * Put cursor back.
178: */
1.3 niklas 179: if (ISSET(w->ww_wflags, WWW_HASCURSOR)) {
180: CLR(w->ww_wflags, WWW_HASCURSOR);
1.1 deraadt 181: wwcursor(w, 1);
182: }
183: /*
184: * Fool with pty.
185: */
1.2 deraadt 186: if (w->ww_type == WWT_PTY && w->ww_pty >= 0)
1.1 deraadt 187: (void) wwsetttysize(w->ww_pty, nrow, ncol);
188: return 0;
189: bad:
190: if (win != 0)
191: wwfree(win, w->ww_w.t);
192: if (fmap != 0)
193: wwfree(fmap, w->ww_w.t);
194: if (buf != 0)
195: wwfree((char **)buf, w->ww_b.t);
196: if (nvis != 0)
197: free((char *)(nvis + w->ww_w.t));
198: return -1;
199: }
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