| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: pres_curses.c,v 1.6 1999/07/27 14:04:19 mdw Exp $ |
| 4 | * |
| 5 | * Curses-based output presentation |
| 6 | * |
| 7 | * (c) 1999 EBI |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of sw-tools. |
| 13 | * |
| 14 | * sw-tools is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * sw-tools is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with sw-tools; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: pres_curses.c,v $ |
| 32 | * Revision 1.6 1999/07/27 14:04:19 mdw |
| 33 | * (Bug fix) Include the SIGWINCH handler even if `wresize' isn't known. |
| 34 | * |
| 35 | * Revision 1.5 1999/07/27 12:49:16 mdw |
| 36 | * Slight tidying of resizing terminal handling. |
| 37 | * |
| 38 | * Revision 1.4 1999/07/16 16:52:28 mdw |
| 39 | * `wbkdset' doesn't work so well. Use `wbkgd' instead. |
| 40 | * |
| 41 | * Revision 1.3 1999/07/16 12:49:58 mdw |
| 42 | * Improve exit status display. New interface from `doto' project. |
| 43 | * |
| 44 | * Revision 1.2 1999/06/24 15:51:16 mdw |
| 45 | * Fix signal handlers so they don't corrupt `errno'. |
| 46 | * |
| 47 | * Revision 1.1.1.1 1999/06/02 16:53:35 mdw |
| 48 | * Initial import. |
| 49 | * |
| 50 | */ |
| 51 | |
| 52 | /*----- Header files ------------------------------------------------------*/ |
| 53 | |
| 54 | #include "config.h" |
| 55 | #ifdef HAVE_CURSES |
| 56 | |
| 57 | #include <errno.h> |
| 58 | #include <signal.h> |
| 59 | #include <stdio.h> |
| 60 | #include <stdlib.h> |
| 61 | #include <string.h> |
| 62 | |
| 63 | #include <sys/types.h> |
| 64 | #include <unistd.h> |
| 65 | |
| 66 | #if defined(HAVE_NCURSES_H) |
| 67 | # include <ncurses.h> |
| 68 | #elif defined(HAVE_NCURSES_NCURSES_H) |
| 69 | # include <ncurses/ncurses.h> |
| 70 | #elif defined(HAVE_CURSES_H) |
| 71 | # include <curses.h> |
| 72 | #else |
| 73 | # error "Where's your <curses.h> header?" |
| 74 | #endif |
| 75 | #include <term.h> |
| 76 | |
| 77 | #include <mLib/alloc.h> |
| 78 | #include <mLib/report.h> |
| 79 | |
| 80 | #include "sw.h" |
| 81 | #include "sw_arch.h" |
| 82 | #include "pres_curses.h" |
| 83 | |
| 84 | #ifndef SIGWINCH |
| 85 | # undef HAVE_WRESIZE |
| 86 | #endif |
| 87 | |
| 88 | /*----- Data structures ---------------------------------------------------*/ |
| 89 | |
| 90 | typedef struct cwin { |
| 91 | struct cwin *next; |
| 92 | WINDOW *w; |
| 93 | int top; |
| 94 | int height; |
| 95 | WINDOW *s; |
| 96 | archent *e; |
| 97 | } cwin; |
| 98 | |
| 99 | /*----- Static variables --------------------------------------------------*/ |
| 100 | |
| 101 | static cwin *cwins = 0; |
| 102 | static int nwins = 0; |
| 103 | |
| 104 | /*----- Main code ---------------------------------------------------------*/ |
| 105 | |
| 106 | /* --- @sizes@ --- * |
| 107 | * |
| 108 | * Arguments: --- |
| 109 | * |
| 110 | * Returns: --- |
| 111 | * |
| 112 | * Use: Calculates window sizes for all the windows. The heights are |
| 113 | * determined in a way which doesn't allow rounding errors to be |
| 114 | * an issue (although there will be up to a line's height |
| 115 | * difference between two windows). No actual changing of |
| 116 | * curses structures is done. |
| 117 | */ |
| 118 | |
| 119 | static void sizes(void) |
| 120 | { |
| 121 | cwin *c; |
| 122 | int t = 0, h = LINES, w = nwins; |
| 123 | |
| 124 | for (c = cwins; c; c = c->next) { |
| 125 | int a = h / w; |
| 126 | c->top = t; |
| 127 | c->height = a - 1; |
| 128 | t += a; |
| 129 | h -= a; |
| 130 | w--; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /* --- @sig_tstp@ --- */ |
| 135 | |
| 136 | #ifdef SIGTSTP |
| 137 | static void sig_tstp(int s) |
| 138 | { |
| 139 | int e = errno; |
| 140 | endwin(); |
| 141 | errno = e; |
| 142 | raise(SIGSTOP); |
| 143 | } |
| 144 | #endif |
| 145 | |
| 146 | /* --- @sig_cont@ --- */ |
| 147 | |
| 148 | #ifdef SIGTSTP |
| 149 | static void sig_cont(int s) |
| 150 | { |
| 151 | int e = errno; |
| 152 | wrefresh(curscr); |
| 153 | errno = e; |
| 154 | } |
| 155 | #endif |
| 156 | |
| 157 | /* --- @sig_winch@ --- */ |
| 158 | |
| 159 | #ifdef SIGWINCH |
| 160 | |
| 161 | static void sig_winch(int s) |
| 162 | { |
| 163 | int e = errno; |
| 164 | |
| 165 | #ifdef HAVE_WRESIZE |
| 166 | cwin *c; |
| 167 | |
| 168 | endwin(); |
| 169 | wrefresh(curscr); |
| 170 | sizes(); |
| 171 | for (c = cwins; c; c = c->next) { |
| 172 | mvwin(c->w, c->top, 0); |
| 173 | wresize(c->w, c->height, COLS); |
| 174 | mvwin(c->s, c->top + c->height, 0); |
| 175 | wnoutrefresh(c->w); |
| 176 | wnoutrefresh(c->s); |
| 177 | } |
| 178 | doupdate(); |
| 179 | #else |
| 180 | endwin(); |
| 181 | wrefresh(curscr); |
| 182 | #endif |
| 183 | errno = e; |
| 184 | } |
| 185 | |
| 186 | #endif |
| 187 | |
| 188 | /* --- @curses_ok@ --- */ |
| 189 | |
| 190 | int curses_ok(void) |
| 191 | { |
| 192 | if (!isatty(STDOUT_FILENO)) { |
| 193 | moan("can't use curses: stdout isn't a terminal"); |
| 194 | return (0); |
| 195 | } |
| 196 | if (setupterm(0, STDOUT_FILENO, 0) == ERR) { |
| 197 | moan("can't use curses: couldn't read terminfo"); |
| 198 | return (0); |
| 199 | } |
| 200 | if (!tigetstr("cup")) { |
| 201 | moan("can't use curses: terminal insufficiently winning"); |
| 202 | return (0); |
| 203 | } |
| 204 | return (1); |
| 205 | } |
| 206 | |
| 207 | /* --- @curses_init@ --- */ |
| 208 | |
| 209 | int curses_init(archcons *a) |
| 210 | { |
| 211 | cwin **cc = &cwins, *c; |
| 212 | |
| 213 | /* --- Allocate my window structures --- */ |
| 214 | |
| 215 | nwins = 0; |
| 216 | for (; a; a = a->cdr) { |
| 217 | archent *e = a->car; |
| 218 | if (!e->r) |
| 219 | continue; |
| 220 | c = xmalloc(sizeof(cwin)); |
| 221 | e->pres = c; |
| 222 | c->w = 0; |
| 223 | c->e = e; |
| 224 | nwins++; |
| 225 | *cc = c; |
| 226 | cc = &c->next; |
| 227 | } |
| 228 | *cc = 0; |
| 229 | |
| 230 | /* --- Haul curses up by its naughty bits --- */ |
| 231 | |
| 232 | initscr(); |
| 233 | keypad(stdscr, TRUE); |
| 234 | cbreak(); |
| 235 | noecho(); |
| 236 | nonl(); |
| 237 | def_prog_mode(); |
| 238 | |
| 239 | /* --- Grind through everything setting up windows --- */ |
| 240 | |
| 241 | sizes(); |
| 242 | for (c = cwins; c; c = c->next) { |
| 243 | if ((c->w = newwin(c->height, COLS, c->top, 0)) == 0 || |
| 244 | (c->s = newwin(1, COLS, c->top + c->height, 0)) == 0) |
| 245 | goto fail_0; |
| 246 | scrollok(c->w, TRUE); |
| 247 | leaveok(c->w, TRUE); |
| 248 | leaveok(c->s, TRUE); |
| 249 | wbkgd(c->s, A_STANDOUT); |
| 250 | mvwprintw(c->s, 0, 0, " %s [running]\n", c->e->arch); |
| 251 | wnoutrefresh(c->w); |
| 252 | wnoutrefresh(c->s); |
| 253 | } |
| 254 | doupdate(); |
| 255 | |
| 256 | #ifdef SIGWINCH |
| 257 | signal(SIGWINCH, sig_winch); |
| 258 | #endif |
| 259 | #ifdef SIGTSTP |
| 260 | signal(SIGTSTP, sig_tstp); |
| 261 | signal(SIGCONT, sig_cont); |
| 262 | #endif |
| 263 | return (0); |
| 264 | |
| 265 | fail_0: |
| 266 | c = cwins; |
| 267 | while (c) { |
| 268 | cwin *cc = c->next; |
| 269 | if (c->w) |
| 270 | delwin(c->w); |
| 271 | if (c->s) |
| 272 | delwin(c->s); |
| 273 | free(c); |
| 274 | c = cc; |
| 275 | } |
| 276 | endwin(); |
| 277 | return (-1); |
| 278 | } |
| 279 | |
| 280 | /* --- @curses_output@ --- */ |
| 281 | |
| 282 | void curses_output(archent *e, const char *p, size_t sz) |
| 283 | { |
| 284 | cwin *c = e->pres; |
| 285 | while (sz) { |
| 286 | waddch(c->w, *p); |
| 287 | p++; |
| 288 | sz--; |
| 289 | } |
| 290 | wrefresh(c->w); |
| 291 | } |
| 292 | |
| 293 | /* --- @curses_close@ --- */ |
| 294 | |
| 295 | void curses_close(archent *e, int ok, const char *summ) |
| 296 | { |
| 297 | cwin *c = e->pres; |
| 298 | mvwprintw(c->s, 0, 0, " %s [%s]\n", e->arch, summ); |
| 299 | wrefresh(c->s); |
| 300 | } |
| 301 | |
| 302 | /* --- @curses_done@ --- */ |
| 303 | |
| 304 | void curses_done(archcons *a) |
| 305 | { |
| 306 | if (opt_flags & optFlag_beep) { |
| 307 | beep(); |
| 308 | doupdate(); |
| 309 | } |
| 310 | wgetch(cwins->w); |
| 311 | cwins = 0; |
| 312 | for (; a; a = a->cdr) { |
| 313 | archent *e = a->car; |
| 314 | cwin *c = e->pres; |
| 315 | delwin(c->w); |
| 316 | delwin(c->s); |
| 317 | free(c); |
| 318 | } |
| 319 | curses_abort(0); |
| 320 | } |
| 321 | |
| 322 | /* --- @curses_abort@ --- */ |
| 323 | |
| 324 | void curses_abort(archcons *a) |
| 325 | { |
| 326 | #ifdef HAVE_WRESIZE |
| 327 | signal(SIGWINCH, SIG_DFL); |
| 328 | #endif |
| 329 | #ifdef SIGTSTP |
| 330 | signal(SIGTSTP, SIG_DFL); |
| 331 | signal(SIGCONT, SIG_DFL); |
| 332 | #endif |
| 333 | endwin(); |
| 334 | } |
| 335 | |
| 336 | /*----- That's all, folks -------------------------------------------------*/ |
| 337 | |
| 338 | #else |
| 339 | int pres_curses__built = 1; |
| 340 | #endif |