1 /* $NetBSD: wwsize.c,v 1.9 2006/05/02 22:24:05 christos Exp $ */ 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwsize.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: wwsize.c,v 1.9 2006/05/02 22:24:05 christos Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <stdlib.h> 45 #include "ww.h" 46 47 /* 48 * Resize a window. Should be unattached. 49 */ 50 int 51 wwsize(struct ww *w, int nrow, int ncol) 52 { 53 int i, j; 54 int nline = 0; 55 union ww_char **buf = 0; 56 char **win = 0; 57 short *nvis = 0; 58 char **fmap = 0; 59 char m; 60 61 /* 62 * First allocate new buffers. 63 */ 64 win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char)); 65 if (win == 0) 66 goto bad; 67 if (w->ww_fmap != 0) { 68 fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char)); 69 if (fmap == 0) 70 goto bad; 71 } 72 if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) { 73 nline = MAX(w->ww_b.nr, nrow); 74 buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l, 75 nline, ncol, sizeof (union ww_char)); 76 if (buf == 0) 77 goto bad; 78 } 79 nvis = (short *)malloc((unsigned) nrow * sizeof (short)); 80 if (nvis == 0) { 81 wwerrno = WWE_NOMEM; 82 goto bad; 83 } 84 nvis -= w->ww_w.t; 85 /* 86 * Copy text buffer. 87 */ 88 if (buf != 0) { 89 int b, r; 90 91 b = w->ww_b.t + nline; 92 r = w->ww_b.l + ncol; 93 if (ncol < w->ww_b.nc) 94 for (i = w->ww_b.t; i < w->ww_b.b; i++) 95 for (j = w->ww_b.l; j < r; j++) 96 buf[i][j] = w->ww_buf[i][j]; 97 else 98 for (i = w->ww_b.t; i < w->ww_b.b; i++) { 99 for (j = w->ww_b.l; j < w->ww_b.r; j++) 100 buf[i][j] = w->ww_buf[i][j]; 101 for (; j < r; j++) 102 buf[i][j].c_w = ' '; 103 } 104 for (; i < b; i++) 105 for (j = w->ww_b.l; j < r; j++) 106 buf[i][j].c_w = ' '; 107 } 108 /* 109 * Now free the old stuff. 110 */ 111 wwfree((char **)w->ww_win, w->ww_w.t); 112 w->ww_win = win; 113 if (buf != 0) { 114 wwfree((char **)w->ww_buf, w->ww_b.t); 115 w->ww_buf = buf; 116 } 117 if (w->ww_fmap != 0) { 118 wwfree((char **)w->ww_fmap, w->ww_w.t); 119 w->ww_fmap = fmap; 120 } 121 free((char *)(w->ww_nvis + w->ww_w.t)); 122 w->ww_nvis = nvis; 123 /* 124 * Set new sizes. 125 */ 126 /* window */ 127 w->ww_w.b = w->ww_w.t + nrow; 128 w->ww_w.r = w->ww_w.l + ncol; 129 w->ww_w.nr = nrow; 130 w->ww_w.nc = ncol; 131 /* text buffer */ 132 if (buf != 0) { 133 w->ww_b.b = w->ww_b.t + nline; 134 w->ww_b.r = w->ww_b.l + ncol; 135 w->ww_b.nr = nline; 136 w->ww_b.nc = ncol; 137 } 138 /* scroll */ 139 if ((i = w->ww_b.b - w->ww_w.b) < 0 || 140 (i = w->ww_cur.r - w->ww_w.b + 1) > 0) { 141 w->ww_buf += i; 142 w->ww_b.t -= i; 143 w->ww_b.b -= i; 144 w->ww_cur.r -= i; 145 } 146 /* interior */ 147 w->ww_i.b = MIN(w->ww_w.b, wwnrow); 148 w->ww_i.r = MIN(w->ww_w.r, wwncol); 149 w->ww_i.nr = w->ww_i.b - w->ww_i.t; 150 w->ww_i.nc = w->ww_i.r - w->ww_i.l; 151 /* 152 * Initialize new buffers. 153 */ 154 /* window */ 155 m = 0; 156 if (w->ww_oflags & WWO_GLASS) 157 m |= WWM_GLS; 158 if (w->ww_oflags & WWO_REVERSE) 159 m |= WWM_REV; 160 for (i = w->ww_w.t; i < w->ww_w.b; i++) 161 for (j = w->ww_w.l; j < w->ww_w.r; j++) 162 w->ww_win[i][j] = m; 163 /* frame map */ 164 if (fmap != 0) 165 for (i = w->ww_w.t; i < w->ww_w.b; i++) 166 for (j = w->ww_w.l; j < w->ww_w.r; j++) 167 w->ww_fmap[i][j] = 0; 168 /* visibility */ 169 j = m ? 0 : w->ww_w.nc; 170 for (i = w->ww_w.t; i < w->ww_w.b; i++) 171 w->ww_nvis[i] = j; 172 /* 173 * Put cursor back. 174 */ 175 if (ISSET(w->ww_wflags, WWW_HASCURSOR)) { 176 CLR(w->ww_wflags, WWW_HASCURSOR); 177 wwcursor(w, 1); 178 } 179 /* 180 * Fool with pty. 181 */ 182 if (w->ww_type == WWT_PTY && w->ww_pty >= 0) 183 (void) wwsetttysize(w->ww_pty, nrow, ncol); 184 return 0; 185 bad: 186 if (win != 0) 187 wwfree(win, w->ww_w.t); 188 if (fmap != 0) 189 wwfree(fmap, w->ww_w.t); 190 if (buf != 0) 191 wwfree((char **)buf, w->ww_b.t); 192 return -1; 193 } 194