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2 * Copyright (c) 1998-2001,2002 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 *
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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 ****************************************************************************/
37 ** The routine set_term().
41 #include <curses.priv.h>
43 #include <term.h> /* cur_term */
46 MODULE_ID("$Id: lib_set_term.c,v 1.71 2002/09/14 22:48:00 tom Exp $")
48 NCURSES_EXPORT(SCREEN *)
49 set_term(SCREEN * screenp)
53 T((T_CALLED("set_term(%p)"), screenp));
56 _nc_set_screen(screenp);
58 set_curterm(SP->_term);
62 COLORS = SP->_color_count;
63 COLOR_PAIRS = SP->_pair_count;
64 memcpy(acs_map, SP->_acs_map, sizeof(SP->_acs_map[0]) * ACS_LEN);
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;
88 T((T_CALLED("delscreen(%p)"), sp));
92 *scan = sp->_next_screen;
95 scan = &(*scan)->_next_screen;
98 (void) _nc_freewin(sp->_curscr);
99 (void) _nc_freewin(sp->_newscr);
100 (void) _nc_freewin(sp->_stdscr);
103 FreeIfNeeded(sp->_slk->ent);
104 FreeIfNeeded(sp->_slk->buffer);
109 _nc_free_keytry(sp->_keytry);
112 _nc_free_keytry(sp->_key_ok);
115 FreeIfNeeded(sp->_color_table);
116 FreeIfNeeded(sp->_color_pairs);
118 FreeIfNeeded(sp->oldhash);
119 FreeIfNeeded(sp->newhash);
120 FreeIfNeeded(sp->hashtab);
122 del_curterm(sp->_term);
125 * If the associated output stream has been closed, we can discard the
126 * set-buffer. Limit the error check to EBADF, since fflush may fail
127 * for other reasons than trying to operate upon a closed stream.
131 && fflush(sp->_ofp) != 0
139 * If this was the current screen, reset everything that the
140 * application might try to use (except cur_term, which may have
141 * multiple references in different screens).
154 static ripoff_t rippedoff[5];
155 static ripoff_t *rsp = rippedoff;
156 #define N_RIPS SIZEOF(SP->_rippedoff)
159 no_mouse_event(SCREEN * sp GCC_UNUSED)
165 no_mouse_inline(SCREEN * sp GCC_UNUSED)
171 no_mouse_parse(int code GCC_UNUSED)
177 no_mouse_resume(SCREEN * sp GCC_UNUSED)
182 no_mouse_wrap(SCREEN * sp GCC_UNUSED)
186 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
188 extract_fgbg(char *src, int *result)
191 long value = strtol(src, &dst, 0);
195 } else if (value >= 0) {
198 while (*dst != 0 && *dst != ';')
207 _nc_setupscreen(short slines, short const scolumns, FILE * output)
208 /* OS-independent screen initializations */
210 int bottom_stolen = 0;
213 T((T_CALLED("_nc_setupscreen(%d, %d, %p)"), slines, scolumns, output));
214 assert(SP == 0); /* has been reset in newterm() ! */
215 if (!_nc_alloc_screen())
218 SP->_next_screen = _nc_screen_chain;
219 _nc_screen_chain = SP;
221 _nc_set_buffer(output, TRUE);
222 SP->_term = cur_term;
224 SP->_lines_avail = slines;
225 SP->_columns = scolumns;
235 SP->_cursor = -1; /* cannot know real cursor shape */
237 #if NCURSES_NO_PADDING
238 SP->_no_padding = getenv("NCURSES_NO_PADDING") != 0;
239 TR(TRACE_CHARPUT | TRACE_MOVE, ("padding will%s be used",
240 SP->_no_padding ? " not" : ""));
243 #if NCURSES_EXT_FUNCS
244 SP->_default_color = FALSE;
245 SP->_has_sgr_39_49 = FALSE;
248 * Set our assumption of the terminal's default foreground and background
249 * colors. The curs_color man-page states that we can assume that the
250 * background is black. The origin of this assumption appears to be
251 * terminals that displayed colored text, but no colored backgrounds, e.g.,
252 * the first colored terminals around 1980. More recent ones with better
253 * technology can display not only colored backgrounds, but all
254 * combinations. So a terminal might be something other than "white" on
255 * black (green/black looks monochrome too), but black on white or even
258 * White-on-black is the simplest thing to use for monochrome. Almost
259 * all applications that use color paint both text and background, so
260 * the distinction is moot. But a few do not - which is why we leave this
261 * configurable (a better solution is to use assume_default_colors() for
262 * the rare applications that do require that sort of appearance, since
263 * is appears that more users expect to be able to make a white-on-black
264 * or black-on-white display under control of the application than not).
266 #ifdef USE_ASSUMED_COLOR
267 SP->_default_fg = COLOR_WHITE;
268 SP->_default_bg = COLOR_BLACK;
270 SP->_default_fg = C_MASK;
271 SP->_default_bg = C_MASK;
275 * Allow those assumed/default color assumptions to be overridden at
278 if (getenv("NCURSES_ASSUMED_COLORS") != 0) {
279 char *p = getenv("NCURSES_ASSUMED_COLORS");
282 int count = sscanf(p, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
284 SP->_default_fg = (fg >= 0 && fg < max_colors) ? fg : C_MASK;
286 SP->_default_bg = (bg >= 0 && bg < max_colors) ? bg : C_MASK;
288 TR(TRACE_CHARPUT | TRACE_MOVE,
289 ("from environment assumed fg=%d, bg=%d",
296 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
297 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
298 * color to that value plus 8. We'll only use the non-bold color for now -
299 * decide later if it is worth having default attributes as well.
301 if (getenv("COLORFGBG") != 0) {
302 char *p = getenv("COLORFGBG");
303 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
304 p = extract_fgbg(p, &(SP->_default_fg));
305 p = extract_fgbg(p, &(SP->_default_bg));
306 if (*p) /* assume rxvt was compiled with xpm support */
307 p = extract_fgbg(p, &(SP->_default_bg));
308 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
309 SP->_default_fg, SP->_default_bg));
310 if (SP->_default_fg >= max_colors) {
311 if (set_a_foreground != ABSENT_STRING
312 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
313 set_a_foreground = "\033[3%?%p1%{8}%>%t9%e%p1%d%;m";
315 SP->_default_fg %= max_colors;
318 if (SP->_default_bg >= max_colors) {
319 if (set_a_background != ABSENT_STRING
320 && !strcmp(set_a_background, "\033[4%p1%dm")) {
321 set_a_background = "\033[4%?%p1%{8}%>%t9%e%p1%d%;m";
323 SP->_default_bg %= max_colors;
328 #endif /* NCURSES_EXT_FUNCS */
330 SP->_maxclick = DEFAULT_MAXCLICK;
331 SP->_mouse_event = no_mouse_event;
332 SP->_mouse_inline = no_mouse_inline;
333 SP->_mouse_parse = no_mouse_parse;
334 SP->_mouse_resume = no_mouse_resume;
335 SP->_mouse_wrap = no_mouse_wrap;
338 /* initialize the panel hooks */
339 SP->_panelHook.top_panel = (struct panel *) 0;
340 SP->_panelHook.bottom_panel = (struct panel *) 0;
341 SP->_panelHook.stdscr_pseudo_panel = (struct panel *) 0;
344 * If we've no magic cookie support, we suppress attributes that xmc
345 * would affect, i.e., the attributes that affect the rendition of a
346 * space. Note that this impacts the alternate character set mapping
349 if (magic_cookie_glitch > 0) {
351 SP->_xmc_triggers = termattrs() & (
359 SP->_xmc_suppress = SP->_xmc_triggers & (chtype) ~(A_BOLD);
361 T(("magic cookie attributes %s", _traceattr(SP->_xmc_suppress)));
364 * To keep this simple, suppress all of the optimization hooks
365 * except for clear_screen and the cursor addressing.
371 magic_cookie_glitch = ABSENT_NUMERIC;
376 /* initialize normal acs before wide, since we use mapping in the latter */
378 #if USE_WIDEC_SUPPORT
381 memcpy(SP->_acs_map, acs_map, sizeof(chtype) * ACS_LEN);
386 _nc_windows = 0; /* no windows yet */
391 T(("creating newscr"));
392 if ((newscr = newwin(slines, scolumns, 0, 0)) == 0)
395 T(("creating curscr"));
396 if ((curscr = newwin(slines, scolumns, 0, 0)) == 0)
399 SP->_newscr = newscr;
400 SP->_curscr = curscr;
402 SP->_resize = resizeterm;
405 newscr->_clear = TRUE;
406 curscr->_clear = FALSE;
411 for (i = 0, rsp = rippedoff; rsp->line && (i < N_RIPS); rsp++, i++) {
412 T(("ripping off line %d at %s", i, rsp->line < 0 ? "bottom" : "top"));
413 SP->_rippedoff[i] = rippedoff[i];
415 int count = (rsp->line < 0) ? -rsp->line : rsp->line;
417 SP->_rippedoff[i].w = newwin(count,
420 ? SP->_lines_avail - count
423 if (SP->_rippedoff[i].w != 0)
424 SP->_rippedoff[i].hook(SP->_rippedoff[i].w, scolumns);
428 bottom_stolen += count;
430 SP->_topstolen += count;
431 SP->_lines_avail -= count;
436 /* reset the stack */
439 T(("creating stdscr"));
440 assert((SP->_lines_avail + SP->_topstolen + bottom_stolen) == slines);
441 if ((stdscr = newwin(LINES = SP->_lines_avail, scolumns, 0, 0)) == 0)
443 SP->_stdscr = stdscr;
448 /* The internal implementation interprets line as the number of
449 lines to rip off from the top or bottom.
452 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
454 T((T_CALLED("_nc_ripoffline(%d, %p)"), line, init));
458 if (rsp >= rippedoff + N_RIPS)
471 ripoffline(int line, int (*init) (WINDOW *, int))
473 T((T_CALLED("ripoffline(%d,%p)"), line, init));
478 returnCode(_nc_ripoffline((line < 0) ? -1 : 1, init));