2 Interface to the terminal controlling library.
5 Copyright (C) 2005, 2006, 2007, 2009, 2011
6 The Free Software Foundation, Inc.
9 Andrew Borodin <aborodin@vmail.ru>, 2009.
10 Ilia Maslakov <il.smind@gmail.com>, 2009.
12 This file is part of the Midnight Commander.
14 The Midnight Commander is free software: you can redistribute it
15 and/or modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation, either version 3 of the License,
17 or (at your option) any later version.
19 The Midnight Commander 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.
24 You should have received a copy of the GNU General Public License
25 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 * \brief Source: NCurses-based tty layer of Midnight-commander
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
42 #include "lib/global.h"
43 #include "lib/strutil.h" /* str_term_form */
49 #include "tty-internal.h" /* mc_tty_normalize_from_utf8() */
51 #include "color-internal.h"
55 /* include at last !!! */
57 #ifdef HAVE_NCURSES_TERM_H
58 #include <ncurses/term.h>
61 #endif /* HAVE_NCURSES_TERM_H */
62 #endif /* WANT_TERM_H */
64 /*** global variables ****************************************************************************/
66 /*** file scope macro definitions ****************************************************************/
68 #if defined(_AIX) && !defined(CTRL)
69 #define CTRL(x) ((x) & 0x1f)
72 #define yx_in_screen(y, x) \
73 (y >= 0 && y < LINES && x >= 0 && x < COLS)
75 /*** global variables ****************************************************************************/
77 /*** file scope type declarations ****************************************************************/
79 /*** file scope variables ************************************************************************/
81 /* ncurses supports cursor positions only within window */
82 /* We use our own cursor coordibates to support partially visible widgets */
83 static int mc_curs_row
, mc_curs_col
;
85 /*** file scope functions ************************************************************************/
86 /* --------------------------------------------------------------------------------------------- */
88 /* --------------------------------------------------------------------------------------------- */
91 tty_setup_sigwinch (void (*handler
) (int))
93 #if (NCURSES_VERSION_MAJOR >= 4) && defined (SIGWINCH)
94 struct sigaction act
, oact
;
95 act
.sa_handler
= handler
;
96 sigemptyset (&act
.sa_mask
);
99 act
.sa_flags
|= SA_RESTART
;
100 #endif /* SA_RESTART */
101 sigaction (SIGWINCH
, &act
, &oact
);
102 #endif /* SIGWINCH */
105 /* --------------------------------------------------------------------------------------------- */
108 sigwinch_handler (int dummy
)
112 mc_global
.tty
.winch_flag
= 1;
115 /* --------------------------------------------------------------------------------------------- */
116 /*** public functions ****************************************************************************/
117 /* --------------------------------------------------------------------------------------------- */
120 mc_tty_normalize_lines_char (const char *ch
)
125 struct mc_tty_lines_struct
129 } const lines_codes
[] = {
130 {"\342\224\230", ACS_LRCORNER
}, /* ┌ */
131 {"\342\224\224", ACS_LLCORNER
}, /* └ */
132 {"\342\224\220", ACS_URCORNER
}, /* ┐ */
133 {"\342\224\214", ACS_ULCORNER
}, /* ┘ */
134 {"\342\224\234", ACS_LTEE
}, /* ├ */
135 {"\342\224\244", ACS_RTEE
}, /* ┤ */
136 {"\342\224\254", ACS_TTEE
}, /* ┬ */
137 {"\342\224\264", ACS_BTEE
}, /* ┴ */
138 {"\342\224\200", ACS_HLINE
}, /* ─ */
139 {"\342\224\202", ACS_VLINE
}, /* │ */
140 {"\342\224\274", ACS_PLUS
}, /* ┼ */
142 {"\342\225\235", ACS_LRCORNER
| A_BOLD
}, /* ╔ */
143 {"\342\225\232", ACS_LLCORNER
| A_BOLD
}, /* ╚ */
144 {"\342\225\227", ACS_URCORNER
| A_BOLD
}, /* ╗ */
145 {"\342\225\224", ACS_ULCORNER
| A_BOLD
}, /* ╝ */
146 {"\342\225\237", ACS_LTEE
| A_BOLD
}, /* ╟ */
147 {"\342\225\242", ACS_RTEE
| A_BOLD
}, /* ╢ */
148 {"\342\225\244", ACS_TTEE
| A_BOLD
}, /* ╤ */
149 {"\342\225\247", ACS_BTEE
| A_BOLD
}, /* ╧ */
150 {"\342\225\220", ACS_HLINE
| A_BOLD
}, /* ═ */
151 {"\342\225\221", ACS_VLINE
| A_BOLD
}, /* ║ */
159 for (res
= 0; lines_codes
[res
].line
; res
++)
161 if (strcmp (ch
, lines_codes
[res
].line
) == 0)
162 return lines_codes
[res
].line_code
;
165 str2
= mc_tty_normalize_from_utf8 (ch
);
166 res
= g_utf8_get_char_validated (str2
, -1);
169 res
= (unsigned char) str2
[0];
175 /* --------------------------------------------------------------------------------------------- */
178 tty_init (gboolean mouse_enable
, gboolean is_xterm
)
184 * If ncurses exports the ESCDELAY variable, it should be set to
185 * a low value, or you'll experience a delay in processing escape
186 * sequences that are recognized by mc (e.g. Esc-Esc). On the other
187 * hand, making ESCDELAY too small can result in some sequences
188 * (e.g. cursor arrows) being reported as separate keys under heavy
189 * processor load, and this can be a problem if mc hasn't learned
190 * them in the "Learn Keys" dialog. The value is in milliseconds.
193 #endif /* HAVE_ESCDELAY */
195 /* use Ctrl-g to generate SIGINT */
196 cur_term
->Nttyb
.c_cc
[VINTR
] = CTRL ('g'); /* ^g */
197 /* disable SIGQUIT to allow use Ctrl-\ key */
198 cur_term
->Nttyb
.c_cc
[VQUIT
] = NULL_VALUE
;
199 tcsetattr (cur_term
->Filedes
, TCSANOW
, &cur_term
->Nttyb
);
201 tty_start_interrupt_key ();
204 use_mouse_p
= MOUSE_DISABLED
;
205 tty_init_xterm_support (is_xterm
); /* do it before do_enter_ca_mode() call */
210 keypad (stdscr
, TRUE
);
211 nodelay (stdscr
, FALSE
);
213 tty_setup_sigwinch (sigwinch_handler
);
216 /* --------------------------------------------------------------------------------------------- */
222 tty_reset_shell_mode ();
229 /* --------------------------------------------------------------------------------------------- */
232 tty_change_screen_size (void)
234 #if defined(TIOCGWINSZ) && NCURSES_VERSION_MAJOR >= 4
235 struct winsize winsz
;
237 winsz
.ws_col
= winsz
.ws_row
= 0;
239 #ifndef NCURSES_VERSION
244 /* Ioctl on the STDIN_FILENO */
245 ioctl (fileno (stdout
), TIOCGWINSZ
, &winsz
);
246 if (winsz
.ws_col
!= 0 && winsz
.ws_row
!= 0)
248 #if defined(NCURSES_VERSION) && defined(HAVE_RESIZETERM)
249 resizeterm (winsz
.ws_row
, winsz
.ws_col
);
250 clearok (stdscr
, TRUE
); /* sigwinch's should use a semaphore! */
253 LINES
= winsz
.ws_row
;
256 #endif /* defined(TIOCGWINSZ) || NCURSES_VERSION_MAJOR >= 4 */
258 #ifdef ENABLE_SUBSHELL
259 if (mc_global
.tty
.use_subshell
)
260 tty_resize (mc_global
.tty
.subshell_pty
);
264 /* --------------------------------------------------------------------------------------------- */
267 tty_reset_prog_mode (void)
272 /* --------------------------------------------------------------------------------------------- */
275 tty_reset_shell_mode (void)
280 /* --------------------------------------------------------------------------------------------- */
285 raw (); /* FIXME: uneeded? */
289 /* --------------------------------------------------------------------------------------------- */
292 tty_noraw_mode (void)
294 nocbreak (); /* FIXME: unneeded? */
298 /* --------------------------------------------------------------------------------------------- */
306 /* --------------------------------------------------------------------------------------------- */
309 tty_flush_input (void)
314 /* --------------------------------------------------------------------------------------------- */
317 tty_keypad (gboolean set
)
319 keypad (stdscr
, (bool) set
);
322 /* --------------------------------------------------------------------------------------------- */
325 tty_nodelay (gboolean set
)
327 nodelay (stdscr
, (bool) set
);
330 /* --------------------------------------------------------------------------------------------- */
338 /* --------------------------------------------------------------------------------------------- */
341 tty_lowlevel_getch (void)
346 /* --------------------------------------------------------------------------------------------- */
349 tty_reset_screen (void)
354 /* --------------------------------------------------------------------------------------------- */
357 tty_touch_screen (void)
362 /* --------------------------------------------------------------------------------------------- */
365 tty_gotoyx (int y
, int x
)
383 /* --------------------------------------------------------------------------------------------- */
386 tty_getyx (int *py
, int *px
)
392 /* --------------------------------------------------------------------------------------------- */
395 tty_draw_hline (int y
, int x
, int ch
, int len
)
399 if (y
< 0 || y
>= LINES
|| x
>= COLS
)
412 if ((chtype
) ch
== ACS_HLINE
)
413 ch
= mc_tty_frm
[MC_TTY_FRM_HORIZ
];
423 /* --------------------------------------------------------------------------------------------- */
426 tty_draw_vline (int y
, int x
, int ch
, int len
)
430 if (x
< 0 || x
>= COLS
|| y
>= LINES
)
443 if ((chtype
) ch
== ACS_VLINE
)
444 ch
= mc_tty_frm
[MC_TTY_FRM_VERT
];
454 /* --------------------------------------------------------------------------------------------- */
457 tty_fill_region (int y
, int x
, int rows
, int cols
, unsigned char ch
)
481 if (y
+ rows
> LINES
)
486 for (i
= 0; i
< rows
; i
++)
498 /* --------------------------------------------------------------------------------------------- */
501 tty_set_alt_charset (gboolean alt_charset
)
506 /* --------------------------------------------------------------------------------------------- */
509 tty_display_8bit (gboolean what
)
511 meta (stdscr
, (int) what
);
514 /* --------------------------------------------------------------------------------------------- */
517 tty_print_char (int c
)
519 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
524 /* --------------------------------------------------------------------------------------------- */
527 tty_print_anychar (int c
)
529 unsigned char str
[6 + 1];
531 if (mc_global
.utf8_display
|| c
> 255)
535 res
= g_unichar_to_utf8 (c
, (char *) str
);
538 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
547 s
= str_term_form ((char *) str
);
549 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
552 if (g_unichar_iswide (c
))
554 else if (!g_unichar_iszerowidth (c
))
560 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
566 /* --------------------------------------------------------------------------------------------- */
569 tty_print_alt_char (int c
, gboolean single
)
571 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
573 if ((chtype
) c
== ACS_VLINE
)
574 c
= mc_tty_frm
[single
? MC_TTY_FRM_VERT
: MC_TTY_FRM_DVERT
];
575 else if ((chtype
) c
== ACS_HLINE
)
576 c
= mc_tty_frm
[single
? MC_TTY_FRM_HORIZ
: MC_TTY_FRM_DHORIZ
];
577 else if ((chtype
) c
== ACS_LTEE
)
578 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTMIDDLE
: MC_TTY_FRM_DLEFTMIDDLE
];
579 else if ((chtype
) c
== ACS_RTEE
)
580 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTMIDDLE
: MC_TTY_FRM_DRIGHTMIDDLE
];
581 else if ((chtype
) c
== ACS_ULCORNER
)
582 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTTOP
: MC_TTY_FRM_DLEFTTOP
];
583 else if ((chtype
) c
== ACS_LLCORNER
)
584 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTBOTTOM
: MC_TTY_FRM_DLEFTBOTTOM
];
585 else if ((chtype
) c
== ACS_URCORNER
)
586 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTTOP
: MC_TTY_FRM_DRIGHTTOP
];
587 else if ((chtype
) c
== ACS_LRCORNER
)
588 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTBOTTOM
: MC_TTY_FRM_DRIGHTBOTTOM
];
589 else if ((chtype
) c
== ACS_PLUS
)
590 c
= mc_tty_frm
[MC_TTY_FRM_CROSS
];
598 /* --------------------------------------------------------------------------------------------- */
601 tty_print_string (const char *s
)
606 s
= str_term_form (s
);
607 len
= str_term_width1 (s
);
609 /* line is upper or below the screen or entire line is before or after scrren */
610 if (mc_curs_row
< 0 || mc_curs_row
>= LINES
|| mc_curs_col
+ len
<= 0 || mc_curs_col
>= COLS
)
616 /* skip invisible left part */
619 start
= -mc_curs_col
;
625 if (mc_curs_col
>= COLS
)
626 len
= COLS
- (mc_curs_col
- len
);
628 addstr (str_term_substring (s
, start
, len
));
631 /* --------------------------------------------------------------------------------------------- */
634 tty_printf (const char *fmt
, ...)
637 char buf
[BUF_1K
]; /* FIXME: is it enough? */
639 va_start (args
, fmt
);
640 g_vsnprintf (buf
, sizeof (buf
), fmt
, args
);
642 tty_print_string (buf
);
645 /* --------------------------------------------------------------------------------------------- */
648 tty_tgetstr (const char *cap
)
651 return tgetstr ((char *) cap
, &unused
);
654 /* --------------------------------------------------------------------------------------------- */
663 /* --------------------------------------------------------------------------------------------- */
671 /* --------------------------------------------------------------------------------------------- */