1 /* $OpenBSD: lib_set_term.c,v 1.9 2000/06/19 03:53:46 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 ****************************************************************************/ 35 36 /* 37 ** lib_set_term.c 38 ** 39 ** The routine set_term(). 40 ** 41 */ 42 43 #include <curses.priv.h> 44 45 #include <term.h> /* cur_term */ 46 #include <tic.h> 47 48 MODULE_ID("$From: lib_set_term.c,v 1.52 2000/05/27 23:22:36 tom Exp $"); 49 50 SCREEN * 51 set_term(SCREEN * screenp) 52 { 53 SCREEN *oldSP; 54 55 T((T_CALLED("set_term(%p)"), screenp)); 56 57 oldSP = SP; 58 _nc_set_screen(screenp); 59 60 set_curterm(SP->_term); 61 curscr = SP->_curscr; 62 newscr = SP->_newscr; 63 stdscr = SP->_stdscr; 64 COLORS = SP->_color_count; 65 COLOR_PAIRS = SP->_pair_count; 66 memcpy(acs_map, SP->_acs_map, sizeof(chtype) * ACS_LEN); 67 68 T((T_RETURN("%p"), oldSP)); 69 return (oldSP); 70 } 71 72 static void 73 _nc_free_keytry(struct tries *kt) 74 { 75 if (kt != 0) { 76 _nc_free_keytry(kt->child); 77 _nc_free_keytry(kt->sibling); 78 free(kt); 79 } 80 } 81 82 /* 83 * Free the storage associated with the given SCREEN sp. 84 */ 85 void 86 delscreen(SCREEN * sp) 87 { 88 SCREEN **scan = &_nc_screen_chain; 89 90 T((T_CALLED("delscreen(%p)"), sp)); 91 92 while (*scan) { 93 if (*scan == sp) { 94 *scan = sp->_next_screen; 95 break; 96 } 97 scan = &(*scan)->_next_screen; 98 } 99 100 _nc_freewin(sp->_curscr); 101 _nc_freewin(sp->_newscr); 102 _nc_freewin(sp->_stdscr); 103 _nc_free_keytry(sp->_keytry); 104 _nc_free_keytry(sp->_key_ok); 105 106 FreeIfNeeded(sp->_color_table); 107 FreeIfNeeded(sp->_color_pairs); 108 109 FreeIfNeeded(sp->oldhash); 110 FreeIfNeeded(sp->newhash); 111 112 del_curterm(sp->_term); 113 114 /* 115 * If the associated output stream has been closed, we can discard the 116 * set-buffer. Limit the error check to EBADF, since fflush may fail 117 * for other reasons than trying to operate upon a closed stream. 118 */ 119 if (sp->_ofp != 0 120 && sp->_setbuf != 0 121 && fflush(sp->_ofp) != 0 122 && errno == EBADF) { 123 free(sp->_setbuf); 124 } 125 126 free(sp); 127 128 /* 129 * If this was the current screen, reset everything that the 130 * application might try to use (except cur_term, which may have 131 * multiple references in different screens). 132 */ 133 if (sp == SP) { 134 curscr = 0; 135 newscr = 0; 136 stdscr = 0; 137 COLORS = 0; 138 COLOR_PAIRS = 0; 139 _nc_set_screen(0); 140 } 141 returnVoid; 142 } 143 144 static ripoff_t rippedoff[5]; 145 static ripoff_t *rsp = rippedoff; 146 #define N_RIPS SIZEOF(rippedoff) 147 148 static bool 149 no_mouse_event(SCREEN * sp GCC_UNUSED) 150 { 151 return FALSE; 152 } 153 static bool 154 no_mouse_inline(SCREEN * sp GCC_UNUSED) 155 { 156 return FALSE; 157 } 158 static bool 159 no_mouse_parse(int code GCC_UNUSED) 160 { 161 return TRUE; 162 } 163 static void 164 no_mouse_resume(SCREEN * sp GCC_UNUSED) 165 { 166 } 167 static void 168 no_mouse_wrap(SCREEN * sp GCC_UNUSED) 169 { 170 } 171 172 int 173 _nc_setupscreen(short slines, short const scolumns, FILE * output) 174 /* OS-independent screen initializations */ 175 { 176 int bottom_stolen = 0; 177 size_t i; 178 179 assert(SP == 0); /* has been reset in newterm() ! */ 180 if (!_nc_alloc_screen()) 181 return ERR; 182 183 SP->_next_screen = _nc_screen_chain; 184 _nc_screen_chain = SP; 185 186 _nc_set_buffer(output, TRUE); 187 SP->_term = cur_term; 188 SP->_lines = slines; 189 SP->_lines_avail = slines; 190 SP->_columns = scolumns; 191 SP->_cursrow = -1; 192 SP->_curscol = -1; 193 SP->_nl = TRUE; 194 SP->_raw = FALSE; 195 SP->_cbreak = 0; 196 SP->_echo = TRUE; 197 SP->_fifohead = -1; 198 SP->_endwin = TRUE; 199 SP->_ofp = output; 200 SP->_cursor = -1; /* cannot know real cursor shape */ 201 #ifdef NCURSES_NO_PADDING 202 SP->_no_padding = getenv("NCURSES_NO_PADDING") != 0; 203 #endif 204 #ifdef NCURSES_EXT_FUNCS 205 SP->_default_color = FALSE; 206 SP->_has_sgr_39_49 = FALSE; 207 SP->_default_fg = COLOR_WHITE; 208 SP->_default_bg = COLOR_BLACK; 209 #endif 210 211 SP->_maxclick = DEFAULT_MAXCLICK; 212 SP->_mouse_event = no_mouse_event; 213 SP->_mouse_inline = no_mouse_inline; 214 SP->_mouse_parse = no_mouse_parse; 215 SP->_mouse_resume = no_mouse_resume; 216 SP->_mouse_wrap = no_mouse_wrap; 217 SP->_mouse_fd = -1; 218 219 /* initialize the panel hooks */ 220 SP->_panelHook.top_panel = (struct panel *) 0; 221 SP->_panelHook.bottom_panel = (struct panel *) 0; 222 SP->_panelHook.stdscr_pseudo_panel = (struct panel *) 0; 223 224 /* 225 * If we've no magic cookie support, we suppress attributes that xmc 226 * would affect, i.e., the attributes that affect the rendition of a 227 * space. Note that this impacts the alternate character set mapping 228 * as well. 229 */ 230 if (magic_cookie_glitch > 0) { 231 232 SP->_xmc_triggers = termattrs() & ( 233 A_ALTCHARSET | 234 A_BLINK | 235 A_BOLD | 236 A_REVERSE | 237 A_STANDOUT | 238 A_UNDERLINE 239 ); 240 SP->_xmc_suppress = SP->_xmc_triggers & (chtype) ~ (A_BOLD); 241 242 T(("magic cookie attributes %s", _traceattr(SP->_xmc_suppress))); 243 #if USE_XMC_SUPPORT 244 /* 245 * To keep this simple, suppress all of the optimization hooks 246 * except for clear_screen and the cursor addressing. 247 */ 248 clr_eol = 0; 249 clr_eos = 0; 250 set_attributes = 0; 251 #else 252 magic_cookie_glitch = ABSENT_NUMERIC; 253 acs_chars = 0; 254 #endif 255 } 256 _nc_init_acs(); 257 memcpy(SP->_acs_map, acs_map, sizeof(chtype) * ACS_LEN); 258 259 _nc_idcok = TRUE; 260 _nc_idlok = FALSE; 261 262 _nc_windows = 0; /* no windows yet */ 263 264 SP->oldhash = 0; 265 SP->newhash = 0; 266 267 T(("creating newscr")); 268 if ((newscr = newwin(slines, scolumns, 0, 0)) == 0) 269 return ERR; 270 271 T(("creating curscr")); 272 if ((curscr = newwin(slines, scolumns, 0, 0)) == 0) 273 return ERR; 274 275 SP->_newscr = newscr; 276 SP->_curscr = curscr; 277 #if USE_SIZECHANGE 278 SP->_resize = resizeterm; 279 #endif 280 281 newscr->_clear = TRUE; 282 curscr->_clear = FALSE; 283 284 for (i = 0, rsp = rippedoff; rsp->line && (i < N_RIPS); rsp++, i++) { 285 if (rsp->hook) { 286 WINDOW *w; 287 int count = (rsp->line < 0) ? -rsp->line : rsp->line; 288 289 if (rsp->line < 0) { 290 w = newwin(count, scolumns, SP->_lines_avail - count, 0); 291 if (w) { 292 rsp->w = w; 293 rsp->hook(w, scolumns); 294 bottom_stolen += count; 295 } else 296 return ERR; 297 } else { 298 w = newwin(count, scolumns, 0, 0); 299 if (w) { 300 rsp->w = w; 301 rsp->hook(w, scolumns); 302 SP->_topstolen += count; 303 } else 304 return ERR; 305 } 306 SP->_lines_avail -= count; 307 } 308 rsp->line = 0; 309 } 310 /* reset the stack */ 311 rsp = rippedoff; 312 313 T(("creating stdscr")); 314 assert((SP->_lines_avail + SP->_topstolen + bottom_stolen) == slines); 315 if ((stdscr = newwin(LINES = SP->_lines_avail, scolumns, 0, 0)) == 0) 316 return ERR; 317 SP->_stdscr = stdscr; 318 319 def_shell_mode(); 320 def_prog_mode(); 321 322 return OK; 323 } 324 325 /* The internal implementation interprets line as the number of 326 lines to rip off from the top or bottom. 327 */ 328 int 329 _nc_ripoffline(int line, int (*init) (WINDOW *, int)) 330 { 331 if (line == 0) 332 return (OK); 333 334 if (rsp >= rippedoff + N_RIPS) 335 return (ERR); 336 337 rsp->line = line; 338 rsp->hook = init; 339 rsp->w = 0; 340 rsp++; 341 342 return (OK); 343 } 344 345 int 346 ripoffline(int line, int (*init) (WINDOW *, int)) 347 { 348 T((T_CALLED("ripoffline(%d,%p)"), line, init)); 349 350 if (line == 0) 351 returnCode(OK); 352 353 returnCode(_nc_ripoffline((line < 0) ? -1 : 1, init)); 354 } 355