1 /****************************************************************************
2 * Copyright (c) 1998-2002,2003 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-2003 *
33 ****************************************************************************/
38 ** The routine set_term().
42 #include <curses.priv.h>
44 #include <term.h> /* cur_term */
47 MODULE_ID("$Id: lib_set_term.c,v 1.81 2003/11/15 23:57:01 tom Exp $")
49 NCURSES_EXPORT(SCREEN *)
50 set_term(SCREEN * screenp)
54 T((T_CALLED("set_term(%p)"), screenp));
57 _nc_set_screen(screenp);
59 set_curterm(SP->_term);
63 COLORS = SP->_color_count;
64 COLOR_PAIRS = SP->_pair_count;
66 T((T_RETURN("%p"), oldSP));
71 _nc_free_keytry(struct tries *kt)
74 _nc_free_keytry(kt->child);
75 _nc_free_keytry(kt->sibling);
81 * Free the storage associated with the given SCREEN sp.
84 delscreen(SCREEN * sp)
86 SCREEN **scan = &_nc_screen_chain;
89 T((T_CALLED("delscreen(%p)"), sp));
93 *scan = sp->_next_screen;
96 scan = &(*scan)->_next_screen;
99 (void) _nc_freewin(sp->_curscr);
100 (void) _nc_freewin(sp->_newscr);
101 (void) _nc_freewin(sp->_stdscr);
104 if (sp->_slk->ent != 0) {
105 for (i = 0; i < sp->_slk->labcnt; ++i) {
106 FreeIfNeeded(sp->_slk->ent[i].ent_text);
107 FreeIfNeeded(sp->_slk->ent[i].form_text);
115 _nc_free_keytry(sp->_keytry);
118 _nc_free_keytry(sp->_key_ok);
121 FreeIfNeeded(sp->_color_table);
122 FreeIfNeeded(sp->_color_pairs);
124 FreeIfNeeded(sp->oldhash);
125 FreeIfNeeded(sp->newhash);
126 FreeIfNeeded(sp->hashtab);
128 del_curterm(sp->_term);
131 * If the associated output stream has been closed, we can discard the
132 * set-buffer. Limit the error check to EBADF, since fflush may fail
133 * for other reasons than trying to operate upon a closed stream.
137 && fflush(sp->_ofp) != 0
145 * If this was the current screen, reset everything that the
146 * application might try to use (except cur_term, which may have
147 * multiple references in different screens).
160 static ripoff_t rippedoff[5];
161 static ripoff_t *rsp = rippedoff;
162 #define N_RIPS SIZEOF(SP->_rippedoff)
165 no_mouse_event(SCREEN * sp GCC_UNUSED)
171 no_mouse_inline(SCREEN * sp GCC_UNUSED)
177 no_mouse_parse(int code GCC_UNUSED)
183 no_mouse_resume(SCREEN * sp GCC_UNUSED)
188 no_mouse_wrap(SCREEN * sp GCC_UNUSED)
192 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
194 extract_fgbg(char *src, int *result)
197 long value = strtol(src, &dst, 0);
201 } else if (value >= 0) {
204 while (*dst != 0 && *dst != ';')
213 _nc_setupscreen(short slines, short const scolumns, FILE *output)
214 /* OS-independent screen initializations */
216 int bottom_stolen = 0;
219 T((T_CALLED("_nc_setupscreen(%d, %d, %p)"), slines, scolumns, output));
220 assert(SP == 0); /* has been reset in newterm() ! */
221 if (!_nc_alloc_screen())
224 SP->_next_screen = _nc_screen_chain;
225 _nc_screen_chain = SP;
228 T(("setting output mode to binary"));
230 setmode(output, O_BINARY);
232 _nc_set_buffer(output, TRUE);
233 SP->_term = cur_term;
235 SP->_lines_avail = slines;
236 SP->_columns = scolumns;
246 SP->_cursor = -1; /* cannot know real cursor shape */
248 #if NCURSES_NO_PADDING
249 SP->_no_padding = getenv("NCURSES_NO_PADDING") != 0;
250 TR(TRACE_CHARPUT | TRACE_MOVE, ("padding will%s be used",
251 SP->_no_padding ? " not" : ""));
254 #if NCURSES_EXT_FUNCS
255 SP->_default_color = FALSE;
256 SP->_has_sgr_39_49 = FALSE;
259 * Set our assumption of the terminal's default foreground and background
260 * colors. The curs_color man-page states that we can assume that the
261 * background is black. The origin of this assumption appears to be
262 * terminals that displayed colored text, but no colored backgrounds, e.g.,
263 * the first colored terminals around 1980. More recent ones with better
264 * technology can display not only colored backgrounds, but all
265 * combinations. So a terminal might be something other than "white" on
266 * black (green/black looks monochrome too), but black on white or even
269 * White-on-black is the simplest thing to use for monochrome. Almost
270 * all applications that use color paint both text and background, so
271 * the distinction is moot. But a few do not - which is why we leave this
272 * configurable (a better solution is to use assume_default_colors() for
273 * the rare applications that do require that sort of appearance, since
274 * is appears that more users expect to be able to make a white-on-black
275 * or black-on-white display under control of the application than not).
277 #ifdef USE_ASSUMED_COLOR
278 SP->_default_fg = COLOR_WHITE;
279 SP->_default_bg = COLOR_BLACK;
281 SP->_default_fg = C_MASK;
282 SP->_default_bg = C_MASK;
286 * Allow those assumed/default color assumptions to be overridden at
289 if (getenv("NCURSES_ASSUMED_COLORS") != 0) {
290 char *p = getenv("NCURSES_ASSUMED_COLORS");
293 int count = sscanf(p, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
295 SP->_default_fg = (fg >= 0 && fg < max_colors) ? fg : C_MASK;
297 SP->_default_bg = (bg >= 0 && bg < max_colors) ? bg : C_MASK;
299 TR(TRACE_CHARPUT | TRACE_MOVE,
300 ("from environment assumed fg=%d, bg=%d",
307 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
308 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
309 * color to that value plus 8. We'll only use the non-bold color for now -
310 * decide later if it is worth having default attributes as well.
312 if (getenv("COLORFGBG") != 0) {
313 char *p = getenv("COLORFGBG");
314 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
315 p = extract_fgbg(p, &(SP->_default_fg));
316 p = extract_fgbg(p, &(SP->_default_bg));
317 if (*p) /* assume rxvt was compiled with xpm support */
318 p = extract_fgbg(p, &(SP->_default_bg));
319 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
320 SP->_default_fg, SP->_default_bg));
321 if (SP->_default_fg >= max_colors) {
322 if (set_a_foreground != ABSENT_STRING
323 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
324 set_a_foreground = "\033[3%?%p1%{8}%>%t9%e%p1%d%;m";
326 SP->_default_fg %= max_colors;
329 if (SP->_default_bg >= max_colors) {
330 if (set_a_background != ABSENT_STRING
331 && !strcmp(set_a_background, "\033[4%p1%dm")) {
332 set_a_background = "\033[4%?%p1%{8}%>%t9%e%p1%d%;m";
334 SP->_default_bg %= max_colors;
339 #endif /* NCURSES_EXT_FUNCS */
341 SP->_maxclick = DEFAULT_MAXCLICK;
342 SP->_mouse_event = no_mouse_event;
343 SP->_mouse_inline = no_mouse_inline;
344 SP->_mouse_parse = no_mouse_parse;
345 SP->_mouse_resume = no_mouse_resume;
346 SP->_mouse_wrap = no_mouse_wrap;
349 /* initialize the panel hooks */
350 SP->_panelHook.top_panel = (struct panel *) 0;
351 SP->_panelHook.bottom_panel = (struct panel *) 0;
352 SP->_panelHook.stdscr_pseudo_panel = (struct panel *) 0;
355 * If we've no magic cookie support, we suppress attributes that xmc
356 * would affect, i.e., the attributes that affect the rendition of a
357 * space. Note that this impacts the alternate character set mapping
360 if (magic_cookie_glitch > 0) {
362 SP->_xmc_triggers = termattrs() & (
370 SP->_xmc_suppress = SP->_xmc_triggers & (chtype) ~(A_BOLD);
372 T(("magic cookie attributes %s", _traceattr(SP->_xmc_suppress)));
375 * To keep this simple, suppress all of the optimization hooks
376 * except for clear_screen and the cursor addressing.
382 magic_cookie_glitch = ABSENT_NUMERIC;
387 /* initialize normal acs before wide, since we use mapping in the latter */
389 #if USE_WIDEC_SUPPORT
392 SP->_screen_acs_fix = (_nc_unicode_locale() && _nc_locale_breaks_acs());
394 char *env = _nc_get_locale();
395 SP->_posix_locale = ((env == 0)
397 || !strcmp(env, "POSIX"));
404 _nc_windows = 0; /* no windows yet */
409 T(("creating newscr"));
410 if ((newscr = newwin(slines, scolumns, 0, 0)) == 0)
413 T(("creating curscr"));
414 if ((curscr = newwin(slines, scolumns, 0, 0)) == 0)
417 SP->_newscr = newscr;
418 SP->_curscr = curscr;
420 SP->_resize = resizeterm;
423 newscr->_clear = TRUE;
424 curscr->_clear = FALSE;
429 for (i = 0, rsp = rippedoff; rsp->line && (i < (int) N_RIPS); rsp++, i++) {
430 T(("ripping off line %d at %s", i, rsp->line < 0 ? "bottom" : "top"));
431 SP->_rippedoff[i] = rippedoff[i];
433 int count = (rsp->line < 0) ? -rsp->line : rsp->line;
435 SP->_rippedoff[i].w = newwin(count,
438 ? SP->_lines_avail - count
441 if (SP->_rippedoff[i].w != 0)
442 SP->_rippedoff[i].hook(SP->_rippedoff[i].w, scolumns);
446 bottom_stolen += count;
448 SP->_topstolen += count;
449 SP->_lines_avail -= count;
454 /* reset the stack */
457 T(("creating stdscr"));
458 assert((SP->_lines_avail + SP->_topstolen + bottom_stolen) == slines);
459 if ((stdscr = newwin(LINES = SP->_lines_avail, scolumns, 0, 0)) == 0)
461 SP->_stdscr = stdscr;
466 /* The internal implementation interprets line as the number of
467 lines to rip off from the top or bottom.
470 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
472 T((T_CALLED("_nc_ripoffline(%d, %p)"), line, init));
476 if (rsp >= rippedoff + N_RIPS)
489 ripoffline(int line, int (*init) (WINDOW *, int))
491 T((T_CALLED("ripoffline(%d,%p)"), line, init));
496 returnCode(_nc_ripoffline((line < 0) ? -1 : 1, init));