1 /****************************************************************************
2 * Copyright (c) 1998-2007,2008 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-on *
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 1.112 2008/06/07 22:29:07 tom Exp $")
49 NCURSES_EXPORT(SCREEN *)
50 set_term(SCREEN *screenp)
55 T((T_CALLED("set_term(%p)"), screenp));
57 _nc_lock_global(curses);
60 _nc_set_screen(screenp);
64 set_curterm(newSP->_term);
66 curscr = newSP->_curscr;
67 newscr = newSP->_newscr;
68 stdscr = newSP->_stdscr;
69 COLORS = newSP->_color_count;
70 COLOR_PAIRS = newSP->_pair_count;
83 _nc_unlock_global(curses);
85 T((T_RETURN("%p"), oldSP));
90 _nc_free_keytry(TRIES * kt)
93 _nc_free_keytry(kt->child);
94 _nc_free_keytry(kt->sibling);
100 delink_screen(SCREEN *sp)
106 for (each_screen(temp)) {
109 last = sp->_next_screen;
111 _nc_screen_chain = sp->_next_screen;
121 * Free the storage associated with the given SCREEN sp.
124 delscreen(SCREEN *sp)
128 T((T_CALLED("delscreen(%p)"), sp));
130 _nc_lock_global(curses);
131 if (delink_screen(sp)) {
133 (void) _nc_freewin(sp->_curscr);
134 (void) _nc_freewin(sp->_newscr);
135 (void) _nc_freewin(sp->_stdscr);
138 if (sp->_slk->ent != 0) {
139 for (i = 0; i < sp->_slk->labcnt; ++i) {
140 FreeIfNeeded(sp->_slk->ent[i].ent_text);
141 FreeIfNeeded(sp->_slk->ent[i].form_text);
149 _nc_free_keytry(sp->_keytry);
152 _nc_free_keytry(sp->_key_ok);
155 FreeIfNeeded(sp->_current_attr);
157 FreeIfNeeded(sp->_color_table);
158 FreeIfNeeded(sp->_color_pairs);
160 FreeIfNeeded(sp->oldhash);
161 FreeIfNeeded(sp->newhash);
162 FreeIfNeeded(sp->hashtab);
164 FreeIfNeeded(sp->_acs_map);
165 FreeIfNeeded(sp->_screen_acs_map);
168 /* FIXME - this should be a copy of the struct, not a pointer */
169 del_curterm(sp->_term);
173 * If the associated output stream has been closed, we can discard the
174 * set-buffer. Limit the error check to EBADF, since fflush may fail
175 * for other reasons than trying to operate upon a closed stream.
179 && fflush(sp->_ofp) != 0
187 * If this was the current screen, reset everything that the
188 * application might try to use (except cur_term, which may have
189 * multiple references in different screens).
202 _nc_unlock_global(curses);
208 no_mouse_event(SCREEN *sp GCC_UNUSED)
214 no_mouse_inline(SCREEN *sp GCC_UNUSED)
220 no_mouse_parse(SCREEN *sp GCC_UNUSED, int code GCC_UNUSED)
226 no_mouse_resume(SCREEN *sp GCC_UNUSED)
231 no_mouse_wrap(SCREEN *sp GCC_UNUSED)
235 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
237 extract_fgbg(char *src, int *result)
240 long value = strtol(src, &dst, 0);
244 } else if (value >= 0) {
247 while (*dst != 0 && *dst != ';')
255 /* OS-independent screen initializations */
257 _nc_setupscreen(int slines GCC_UNUSED,
258 int scolumns GCC_UNUSED,
264 int bottom_stolen = 0;
265 bool support_cookies = USE_XMC_SUPPORT;
268 T((T_CALLED("_nc_setupscreen(%d, %d, %p, %d, %d)"),
269 slines, scolumns, output, filtered, slk_format));
271 assert(SP == 0); /* has been reset in newterm() ! */
272 if (!_nc_alloc_screen()
273 || ((SP->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
274 || ((SP->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
278 T(("created SP %p", SP));
279 SP->_next_screen = _nc_screen_chain;
280 _nc_screen_chain = SP;
282 if ((SP->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0)
286 * We should always check the screensize, just in case.
288 _nc_get_screensize(SP, &slines, &scolumns);
291 T((T_CREATE("screen %s %dx%d"), termname(), LINES, COLS));
293 SP->_filtered = filtered;
295 /* implement filter mode */
300 cursor_down = parm_down_cursor = 0;
302 cursor_up = parm_up_cursor = 0;
305 cursor_home = carriage_return;
306 T(("filter screensize %dx%d", LINES, COLS));
309 T(("setting output mode to binary"));
311 setmode(output, O_BINARY);
313 _nc_set_buffer(output, TRUE);
314 SP->_term = cur_term;
316 SP->_lines_avail = slines;
317 SP->_columns = scolumns;
327 SP->_cursor = -1; /* cannot know real cursor shape */
329 #if NCURSES_NO_PADDING
330 SP->_no_padding = getenv("NCURSES_NO_PADDING") != 0;
331 TR(TRACE_CHARPUT | TRACE_MOVE, ("padding will%s be used",
332 SP->_no_padding ? " not" : ""));
335 #if NCURSES_EXT_FUNCS
336 SP->_default_color = FALSE;
337 SP->_has_sgr_39_49 = FALSE;
340 * Set our assumption of the terminal's default foreground and background
341 * colors. The curs_color man-page states that we can assume that the
342 * background is black. The origin of this assumption appears to be
343 * terminals that displayed colored text, but no colored backgrounds, e.g.,
344 * the first colored terminals around 1980. More recent ones with better
345 * technology can display not only colored backgrounds, but all
346 * combinations. So a terminal might be something other than "white" on
347 * black (green/black looks monochrome too), but black on white or even
350 * White-on-black is the simplest thing to use for monochrome. Almost
351 * all applications that use color paint both text and background, so
352 * the distinction is moot. But a few do not - which is why we leave this
353 * configurable (a better solution is to use assume_default_colors() for
354 * the rare applications that do require that sort of appearance, since
355 * is appears that more users expect to be able to make a white-on-black
356 * or black-on-white display under control of the application than not).
358 #ifdef USE_ASSUMED_COLOR
359 SP->_default_fg = COLOR_WHITE;
360 SP->_default_bg = COLOR_BLACK;
362 SP->_default_fg = C_MASK;
363 SP->_default_bg = C_MASK;
367 * Allow those assumed/default color assumptions to be overridden at
370 if (getenv("NCURSES_ASSUMED_COLORS") != 0) {
371 char *p = getenv("NCURSES_ASSUMED_COLORS");
374 int count = sscanf(p, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
376 SP->_default_fg = (fg >= 0 && fg < max_colors) ? fg : C_MASK;
378 SP->_default_bg = (bg >= 0 && bg < max_colors) ? bg : C_MASK;
380 TR(TRACE_CHARPUT | TRACE_MOVE,
381 ("from environment assumed fg=%d, bg=%d",
388 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
389 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
390 * color to that value plus 8. We'll only use the non-bold color for now -
391 * decide later if it is worth having default attributes as well.
393 if (getenv("COLORFGBG") != 0) {
394 char *p = getenv("COLORFGBG");
395 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
396 p = extract_fgbg(p, &(SP->_default_fg));
397 p = extract_fgbg(p, &(SP->_default_bg));
398 if (*p) /* assume rxvt was compiled with xpm support */
399 p = extract_fgbg(p, &(SP->_default_bg));
400 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
401 SP->_default_fg, SP->_default_bg));
402 if (SP->_default_fg >= max_colors) {
403 if (set_a_foreground != ABSENT_STRING
404 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
405 set_a_foreground = "\033[3%?%p1%{8}%>%t9%e%p1%d%;m";
407 SP->_default_fg %= max_colors;
410 if (SP->_default_bg >= max_colors) {
411 if (set_a_background != ABSENT_STRING
412 && !strcmp(set_a_background, "\033[4%p1%dm")) {
413 set_a_background = "\033[4%?%p1%{8}%>%t9%e%p1%d%;m";
415 SP->_default_bg %= max_colors;
420 #endif /* NCURSES_EXT_FUNCS */
422 SP->_maxclick = DEFAULT_MAXCLICK;
423 SP->_mouse_event = no_mouse_event;
424 SP->_mouse_inline = no_mouse_inline;
425 SP->_mouse_parse = no_mouse_parse;
426 SP->_mouse_resume = no_mouse_resume;
427 SP->_mouse_wrap = no_mouse_wrap;
430 /* initialize the panel hooks */
431 SP->_panelHook.top_panel = (struct panel *) 0;
432 SP->_panelHook.bottom_panel = (struct panel *) 0;
433 SP->_panelHook.stdscr_pseudo_panel = (struct panel *) 0;
436 * If we've no magic cookie support, we suppress attributes that xmc would
437 * affect, i.e., the attributes that affect the rendition of a space.
439 SP->_ok_attributes = termattrs();
441 SP->_ok_attributes |= A_COLOR;
445 * If we have no magic-cookie support compiled-in, or if it is suppressed
446 * in the environment, reset the support-flag.
448 if (magic_cookie_glitch >= 0) {
449 if (getenv("NCURSES_NO_MAGIC_COOKIE") != 0) {
450 support_cookies = FALSE;
455 if (!support_cookies && magic_cookie_glitch >= 0) {
456 T(("will disable attributes to work w/o magic cookies"));
459 if (magic_cookie_glitch > 0) { /* tvi, wyse */
461 SP->_xmc_triggers = SP->_ok_attributes & (
473 * We "should" treat colors as an attribute. The wyse350 (and its
474 * clones) appear to be the only ones that have both colors and magic
478 SP->_xmc_triggers |= A_COLOR;
481 SP->_xmc_suppress = SP->_xmc_triggers & (chtype) ~(A_BOLD);
483 T(("magic cookie attributes %s", _traceattr(SP->_xmc_suppress)));
485 * Supporting line-drawing may be possible. But make the regular
486 * video attributes work first.
488 acs_chars = ABSENT_STRING;
489 ena_acs = ABSENT_STRING;
490 enter_alt_charset_mode = ABSENT_STRING;
491 exit_alt_charset_mode = ABSENT_STRING;
494 * To keep the cookie support simple, suppress all of the optimization
495 * hooks except for clear_screen and the cursor addressing.
497 if (support_cookies) {
498 clr_eol = ABSENT_STRING;
499 clr_eos = ABSENT_STRING;
500 set_attributes = ABSENT_STRING;
503 } else if (magic_cookie_glitch == 0) { /* hpterm */
507 * If magic cookies are not supported, cancel the strings that set
510 if (!support_cookies && magic_cookie_glitch >= 0) {
511 magic_cookie_glitch = ABSENT_NUMERIC;
512 set_attributes = ABSENT_STRING;
513 enter_blink_mode = ABSENT_STRING;
514 enter_bold_mode = ABSENT_STRING;
515 enter_dim_mode = ABSENT_STRING;
516 enter_reverse_mode = ABSENT_STRING;
517 enter_standout_mode = ABSENT_STRING;
518 enter_underline_mode = ABSENT_STRING;
521 /* initialize normal acs before wide, since we use mapping in the latter */
522 #if !USE_WIDEC_SUPPORT
523 if (_nc_unicode_locale() && _nc_locale_breaks_acs()) {
526 enter_alt_charset_mode = NULL;
527 exit_alt_charset_mode = NULL;
528 set_attributes = NULL;
532 #if USE_WIDEC_SUPPORT
535 SP->_screen_acs_fix = (_nc_unicode_locale() && _nc_locale_breaks_acs());
537 env = _nc_get_locale();
538 SP->_legacy_coding = ((env == 0)
540 || !strcmp(env, "POSIX"));
541 T(("legacy-coding %d", SP->_legacy_coding));
549 T(("creating newscr"));
550 if ((SP->_newscr = newwin(slines, scolumns, 0, 0)) == 0)
553 T(("creating curscr"));
554 if ((SP->_curscr = newwin(slines, scolumns, 0, 0)) == 0)
558 newscr = SP->_newscr;
559 curscr = SP->_curscr;
562 SP->_resize = resizeterm;
565 newscr->_clear = TRUE;
566 curscr->_clear = FALSE;
571 for (rop = ripoff_stack;
572 rop != ripoff_sp && (rop - ripoff_stack) < N_RIPS;
575 /* If we must simulate soft labels, grab off the line to be used.
576 We assume that we must simulate, if it is none of the standard
577 formats (4-4 or 3-2-3) for which there may be some hardware
579 if (rop->hook == _nc_slk_initialize)
580 if (!(num_labels <= 0 || !SLK_STDFMT(slk_format)))
586 count = (rop->line < 0) ? -rop->line : rop->line;
587 T(("ripping off %i lines at %s", count,
592 w = newwin(count, scolumns,
594 ? SP->_lines_avail - count
599 rop->hook(w, scolumns);
604 bottom_stolen += count;
606 SP->_topstolen += count;
607 SP->_lines_avail -= count;
610 /* reset the stack */
611 ripoff_sp = ripoff_stack;
613 T(("creating stdscr"));
614 assert((SP->_lines_avail + SP->_topstolen + bottom_stolen) == slines);
615 if ((SP->_stdscr = newwin(SP->_lines_avail, scolumns, 0, 0)) == 0)
618 SET_LINES(SP->_lines_avail);
620 stdscr = SP->_stdscr;
627 * The internal implementation interprets line as the number of lines to rip
628 * off from the top or bottom.
631 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
633 T((T_CALLED("_nc_ripoffline(%d, %p)"), line, init));
638 ripoff_sp = ripoff_stack;
639 if (ripoff_sp >= ripoff_stack + N_RIPS)
642 ripoff_sp->line = line;
643 ripoff_sp->hook = init;
651 ripoffline(int line, int (*init) (WINDOW *, int))
654 T((T_CALLED("ripoffline(%d,%p)"), line, init));
659 returnCode(_nc_ripoffline((line < 0) ? -1 : 1, init));