1 /* @(#)wwsize.c 8.1 (Berkeley) 6/6/93 */ 2 /* $NetBSD: wwsize.c,v 1.9 2006/05/02 22:24:05 christos Exp $ */ 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. Neither the name of the University nor the names of its contributors 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 36 #include <stdlib.h> 37 #include "ww.h" 38 39 /* 40 * Resize a window. Should be unattached. 41 */ 42 int 43 wwsize(struct ww *w, int nrow, int ncol) 44 { 45 int i, j; 46 int nline = 0; 47 union ww_char **buf = NULL; 48 char **win = NULL; 49 short *nvis = NULL; 50 char **fmap = NULL; 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 == NULL) 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 == NULL) 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 == NULL) 69 goto bad; 70 } 71 nvis = malloc((unsigned) nrow * sizeof (short)); 72 if (nvis == NULL) { 73 wwerrno = WWE_NOMEM; 74 goto bad; 75 } 76 nvis -= w->ww_w.t; 77 /* 78 * Copy text buffer. 79 */ 80 if (buf != NULL) { 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 != NULL) { 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 != NULL) { 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 != NULL) 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 */ 167 if (ISSET(w->ww_wflags, WWW_HASCURSOR)) { 168 CLR(w->ww_wflags, WWW_HASCURSOR); 169 wwcursor(w, 1); 170 } 171 /* 172 * Fool with pty. 173 */ 174 if (w->ww_type == WWT_PTY && w->ww_pty >= 0) 175 (void) wwsetttysize(w->ww_pty, nrow, ncol); 176 return 0; 177 bad: 178 if (win != NULL) 179 wwfree(win, w->ww_w.t); 180 if (fmap != NULL) 181 wwfree(fmap, w->ww_w.t); 182 if (buf != NULL) 183 wwfree((char **)buf, w->ww_b.t); 184 return -1; 185 } 186