Annotation of src/usr.bin/window/wwsize.c, Revision 1.2
1.2 ! deraadt 1: /* $NetBSD: wwsize.c,v 1.4 1995/12/21 10:46:28 mycroft Exp $ */
1.1 deraadt 2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwsize.c 8.1 (Berkeley) 6/6/93";
42: #else
1.2 ! deraadt 43: static char rcsid[] = "$NetBSD: wwsize.c,v 1.4 1995/12/21 10:46:28 mycroft Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48:
49: /*
50: * Resize a window. Should be unattached.
51: */
52: wwsize(w, nrow, ncol)
53: register struct ww *w;
54: {
55: register i, j;
56: int nline;
57: union ww_char **buf = 0;
58: char **win = 0;
59: short *nvis = 0;
60: char **fmap = 0;
61: char m;
62:
63: /*
64: * First allocate new buffers.
65: */
66: win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
67: if (win == 0)
68: goto bad;
69: if (w->ww_fmap != 0) {
70: fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char));
71: if (fmap == 0)
72: goto bad;
73: }
74: if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) {
75: nline = MAX(w->ww_b.nr, nrow);
76: buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l,
77: nline, ncol, sizeof (union ww_char));
78: if (buf == 0)
79: goto bad;
80: }
81: nvis = (short *)malloc((unsigned) nrow * sizeof (short));
82: if (nvis == 0) {
83: wwerrno = WWE_NOMEM;
84: goto bad;
85: }
86: nvis -= w->ww_w.t;
87: /*
88: * Copy text buffer.
89: */
90: if (buf != 0) {
91: int b, r;
92:
93: b = w->ww_b.t + nline;
94: r = w->ww_b.l + ncol;
95: if (ncol < w->ww_b.nc)
96: for (i = w->ww_b.t; i < w->ww_b.b; i++)
97: for (j = w->ww_b.l; j < r; j++)
98: buf[i][j] = w->ww_buf[i][j];
99: else
100: for (i = w->ww_b.t; i < w->ww_b.b; i++) {
101: for (j = w->ww_b.l; j < w->ww_b.r; j++)
102: buf[i][j] = w->ww_buf[i][j];
103: for (; j < r; j++)
104: buf[i][j].c_w = ' ';
105: }
106: for (; i < b; i++)
107: for (j = w->ww_b.l; j < r; j++)
108: buf[i][j].c_w = ' ';
109: }
110: /*
111: * Now free the old stuff.
112: */
113: wwfree((char **)w->ww_win, w->ww_w.t);
114: w->ww_win = win;
115: if (buf != 0) {
116: wwfree((char **)w->ww_buf, w->ww_b.t);
117: w->ww_buf = buf;
118: }
119: if (w->ww_fmap != 0) {
120: wwfree((char **)w->ww_fmap, w->ww_w.t);
121: w->ww_fmap = fmap;
122: }
123: free((char *)(w->ww_nvis + w->ww_w.t));
124: w->ww_nvis = nvis;
125: /*
126: * Set new sizes.
127: */
128: /* window */
129: w->ww_w.b = w->ww_w.t + nrow;
130: w->ww_w.r = w->ww_w.l + ncol;
131: w->ww_w.nr = nrow;
132: w->ww_w.nc = ncol;
133: /* text buffer */
134: if (buf != 0) {
135: w->ww_b.b = w->ww_b.t + nline;
136: w->ww_b.r = w->ww_b.l + ncol;
137: w->ww_b.nr = nline;
138: w->ww_b.nc = ncol;
139: }
140: /* scroll */
141: if ((i = w->ww_b.b - w->ww_w.b) < 0 ||
142: (i = w->ww_cur.r - w->ww_w.b + 1) > 0) {
143: w->ww_buf += i;
144: w->ww_b.t -= i;
145: w->ww_b.b -= i;
146: w->ww_cur.r -= i;
147: }
148: /* interior */
149: w->ww_i.b = MIN(w->ww_w.b, wwnrow);
150: w->ww_i.r = MIN(w->ww_w.r, wwncol);
151: w->ww_i.nr = w->ww_i.b - w->ww_i.t;
152: w->ww_i.nc = w->ww_i.r - w->ww_i.l;
153: /*
154: * Initialize new buffers.
155: */
156: /* window */
157: m = 0;
158: if (w->ww_oflags & WWO_GLASS)
159: m |= WWM_GLS;
160: if (w->ww_oflags & WWO_REVERSE)
161: m |= WWM_REV;
162: for (i = w->ww_w.t; i < w->ww_w.b; i++)
163: for (j = w->ww_w.l; j < w->ww_w.r; j++)
164: w->ww_win[i][j] = m;
165: /* frame map */
166: if (fmap != 0)
167: for (i = w->ww_w.t; i < w->ww_w.b; i++)
168: for (j = w->ww_w.l; j < w->ww_w.r; j++)
169: w->ww_fmap[i][j] = 0;
170: /* visibility */
171: j = m ? 0 : w->ww_w.nc;
172: for (i = w->ww_w.t; i < w->ww_w.b; i++)
173: w->ww_nvis[i] = j;
174: /*
175: * Put cursor back.
176: */
177: if (w->ww_hascursor) {
178: w->ww_hascursor = 0;
179: wwcursor(w, 1);
180: }
181: /*
182: * Fool with pty.
183: */
1.2 ! deraadt 184: if (w->ww_type == WWT_PTY && w->ww_pty >= 0)
1.1 deraadt 185: (void) wwsetttysize(w->ww_pty, nrow, ncol);
186: return 0;
187: bad:
188: if (win != 0)
189: wwfree(win, w->ww_w.t);
190: if (fmap != 0)
191: wwfree(fmap, w->ww_w.t);
192: if (buf != 0)
193: wwfree((char **)buf, w->ww_b.t);
194: if (nvis != 0)
195: free((char *)(nvis + w->ww_w.t));
196: return -1;
197: }
![[BACK]](/icons/back.gif){kind=icon}
Return to wwsize.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / window