2 Interface to the terminal controlling library.
5 Copyright (C) 2005-2017
6 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"
56 /* include at last !!! */
58 #ifdef HAVE_NCURSES_TERM_H
59 #include <ncurses/term.h>
62 #endif /* HAVE_NCURSES_TERM_H */
63 #endif /* WANT_TERM_H */
65 /*** global variables ****************************************************************************/
67 /*** file scope macro definitions ****************************************************************/
70 #define CTRL(x) ((x) & 0x1f)
73 #define yx_in_screen(y, x) \
74 (y >= 0 && y < LINES && x >= 0 && x < COLS)
76 /*** global variables ****************************************************************************/
78 /*** file scope type declarations ****************************************************************/
80 /*** file scope variables ************************************************************************/
82 /* ncurses supports cursor positions only within window */
83 /* We use our own cursor coordinates to support partially visible widgets */
84 static int mc_curs_row
, mc_curs_col
;
86 /*** file scope functions ************************************************************************/
87 /* --------------------------------------------------------------------------------------------- */
89 /* --------------------------------------------------------------------------------------------- */
92 tty_setup_sigwinch (void (*handler
) (int))
94 #if (NCURSES_VERSION_MAJOR >= 4) && defined (SIGWINCH)
95 struct sigaction act
, oact
;
97 memset (&act
, 0, sizeof (act
));
98 act
.sa_handler
= handler
;
99 sigemptyset (&act
.sa_mask
);
101 act
.sa_flags
= SA_RESTART
;
102 #endif /* SA_RESTART */
103 sigaction (SIGWINCH
, &act
, &oact
);
104 #endif /* SIGWINCH */
107 /* --------------------------------------------------------------------------------------------- */
110 sigwinch_handler (int dummy
)
114 mc_global
.tty
.winch_flag
= 1;
117 /* --------------------------------------------------------------------------------------------- */
118 /*** public functions ****************************************************************************/
119 /* --------------------------------------------------------------------------------------------- */
122 mc_tty_normalize_lines_char (const char *ch
)
127 struct mc_tty_lines_struct
131 } const lines_codes
[] = {
132 {"\342\224\230", ACS_LRCORNER
}, /* ┌ */
133 {"\342\224\224", ACS_LLCORNER
}, /* └ */
134 {"\342\224\220", ACS_URCORNER
}, /* ┐ */
135 {"\342\224\214", ACS_ULCORNER
}, /* ┘ */
136 {"\342\224\234", ACS_LTEE
}, /* ├ */
137 {"\342\224\244", ACS_RTEE
}, /* ┤ */
138 {"\342\224\254", ACS_TTEE
}, /* ┬ */
139 {"\342\224\264", ACS_BTEE
}, /* ┴ */
140 {"\342\224\200", ACS_HLINE
}, /* ─ */
141 {"\342\224\202", ACS_VLINE
}, /* │ */
142 {"\342\224\274", ACS_PLUS
}, /* ┼ */
144 {"\342\225\235", ACS_LRCORNER
| A_BOLD
}, /* ╔ */
145 {"\342\225\232", ACS_LLCORNER
| A_BOLD
}, /* ╚ */
146 {"\342\225\227", ACS_URCORNER
| A_BOLD
}, /* ╗ */
147 {"\342\225\224", ACS_ULCORNER
| A_BOLD
}, /* ╝ */
148 {"\342\225\237", ACS_LTEE
| A_BOLD
}, /* ╟ */
149 {"\342\225\242", ACS_RTEE
| A_BOLD
}, /* ╢ */
150 {"\342\225\244", ACS_TTEE
| A_BOLD
}, /* ╤ */
151 {"\342\225\247", ACS_BTEE
| A_BOLD
}, /* ╧ */
152 {"\342\225\220", ACS_HLINE
| A_BOLD
}, /* ═ */
153 {"\342\225\221", ACS_VLINE
| A_BOLD
}, /* ║ */
161 for (res
= 0; lines_codes
[res
].line
; res
++)
163 if (strcmp (ch
, lines_codes
[res
].line
) == 0)
164 return lines_codes
[res
].line_code
;
167 str2
= mc_tty_normalize_from_utf8 (ch
);
168 res
= g_utf8_get_char_validated (str2
, -1);
171 res
= (unsigned char) str2
[0];
177 /* --------------------------------------------------------------------------------------------- */
180 tty_init (gboolean mouse_enable
, gboolean is_xterm
)
188 * If ncurses exports the ESCDELAY variable, it should be set to
189 * a low value, or you'll experience a delay in processing escape
190 * sequences that are recognized by mc (e.g. Esc-Esc). On the other
191 * hand, making ESCDELAY too small can result in some sequences
192 * (e.g. cursor arrows) being reported as separate keys under heavy
193 * processor load, and this can be a problem if mc hasn't learned
194 * them in the "Learn Keys" dialog. The value is in milliseconds.
197 #endif /* HAVE_ESCDELAY */
199 tcgetattr (STDIN_FILENO
, &mode
);
200 /* use Ctrl-g to generate SIGINT */
201 mode
.c_cc
[VINTR
] = CTRL ('g'); /* ^g */
202 /* disable SIGQUIT to allow use Ctrl-\ key */
203 mode
.c_cc
[VQUIT
] = NULL_VALUE
;
204 tcsetattr (STDIN_FILENO
, TCSANOW
, &mode
);
206 /* curses remembers the "in-program" modes after this call */
209 tty_start_interrupt_key ();
212 use_mouse_p
= MOUSE_DISABLED
;
213 tty_init_xterm_support (is_xterm
); /* do it before tty_enter_ca_mode() call */
214 tty_enter_ca_mode ();
217 keypad (stdscr
, TRUE
);
218 nodelay (stdscr
, FALSE
);
220 tty_setup_sigwinch (sigwinch_handler
);
223 /* --------------------------------------------------------------------------------------------- */
228 tty_reset_shell_mode ();
235 /* --------------------------------------------------------------------------------------------- */
238 tty_enter_ca_mode (void)
240 if (mc_global
.tty
.xterm_flag
&& smcup
!= NULL
)
242 fprintf (stdout
, /* ESC_STR ")0" */ ESC_STR
"7" ESC_STR
"[?47h");
247 /* --------------------------------------------------------------------------------------------- */
250 tty_exit_ca_mode (void)
252 if (mc_global
.tty
.xterm_flag
&& rmcup
!= NULL
)
254 fprintf (stdout
, ESC_STR
"[?47l" ESC_STR
"8" ESC_STR
"[m");
259 /* --------------------------------------------------------------------------------------------- */
262 tty_change_screen_size (void)
264 #if defined(TIOCGWINSZ) && NCURSES_VERSION_MAJOR >= 4
265 struct winsize winsz
;
267 winsz
.ws_col
= winsz
.ws_row
= 0;
269 #ifndef NCURSES_VERSION
274 /* Ioctl on the STDIN_FILENO */
275 ioctl (fileno (stdout
), TIOCGWINSZ
, &winsz
);
276 if (winsz
.ws_col
!= 0 && winsz
.ws_row
!= 0)
278 #if defined(NCURSES_VERSION) && defined(HAVE_RESIZETERM)
279 resizeterm (winsz
.ws_row
, winsz
.ws_col
);
280 clearok (stdscr
, TRUE
); /* sigwinch's should use a semaphore! */
283 LINES
= winsz
.ws_row
;
286 #endif /* defined(TIOCGWINSZ) || NCURSES_VERSION_MAJOR >= 4 */
288 #ifdef ENABLE_SUBSHELL
289 if (mc_global
.tty
.use_subshell
)
290 tty_resize (mc_global
.tty
.subshell_pty
);
294 /* --------------------------------------------------------------------------------------------- */
297 tty_reset_prog_mode (void)
302 /* --------------------------------------------------------------------------------------------- */
305 tty_reset_shell_mode (void)
310 /* --------------------------------------------------------------------------------------------- */
315 raw (); /* FIXME: uneeded? */
319 /* --------------------------------------------------------------------------------------------- */
322 tty_noraw_mode (void)
324 nocbreak (); /* FIXME: unneeded? */
328 /* --------------------------------------------------------------------------------------------- */
336 /* --------------------------------------------------------------------------------------------- */
339 tty_flush_input (void)
344 /* --------------------------------------------------------------------------------------------- */
347 tty_keypad (gboolean set
)
349 keypad (stdscr
, (bool) set
);
352 /* --------------------------------------------------------------------------------------------- */
355 tty_nodelay (gboolean set
)
357 nodelay (stdscr
, (bool) set
);
360 /* --------------------------------------------------------------------------------------------- */
368 /* --------------------------------------------------------------------------------------------- */
371 tty_lowlevel_getch (void)
376 /* --------------------------------------------------------------------------------------------- */
379 tty_reset_screen (void)
384 /* --------------------------------------------------------------------------------------------- */
387 tty_touch_screen (void)
392 /* --------------------------------------------------------------------------------------------- */
395 tty_gotoyx (int y
, int x
)
413 /* --------------------------------------------------------------------------------------------- */
416 tty_getyx (int *py
, int *px
)
422 /* --------------------------------------------------------------------------------------------- */
425 tty_draw_hline (int y
, int x
, int ch
, int len
)
429 if (y
< 0 || y
>= LINES
|| x
>= COLS
)
442 if ((chtype
) ch
== ACS_HLINE
)
443 ch
= mc_tty_frm
[MC_TTY_FRM_HORIZ
];
453 /* --------------------------------------------------------------------------------------------- */
456 tty_draw_vline (int y
, int x
, int ch
, int len
)
460 if (x
< 0 || x
>= COLS
|| y
>= LINES
)
473 if ((chtype
) ch
== ACS_VLINE
)
474 ch
= mc_tty_frm
[MC_TTY_FRM_VERT
];
484 /* --------------------------------------------------------------------------------------------- */
487 tty_fill_region (int y
, int x
, int rows
, int cols
, unsigned char ch
)
511 if (y
+ rows
> LINES
)
516 for (i
= 0; i
< rows
; i
++)
528 /* --------------------------------------------------------------------------------------------- */
531 tty_set_alt_charset (gboolean alt_charset
)
536 /* --------------------------------------------------------------------------------------------- */
539 tty_display_8bit (gboolean what
)
541 meta (stdscr
, (int) what
);
544 /* --------------------------------------------------------------------------------------------- */
547 tty_print_char (int c
)
549 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
554 /* --------------------------------------------------------------------------------------------- */
557 tty_print_anychar (int c
)
559 if (mc_global
.utf8_display
|| c
> 255)
562 unsigned char str
[UTF8_CHAR_LEN
+ 1];
564 res
= g_unichar_to_utf8 (c
, (char *) str
);
567 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
576 s
= str_term_form ((char *) str
);
578 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
581 if (g_unichar_iswide (c
))
583 else if (!g_unichar_iszerowidth (c
))
589 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
595 /* --------------------------------------------------------------------------------------------- */
598 tty_print_alt_char (int c
, gboolean single
)
600 if (yx_in_screen (mc_curs_row
, mc_curs_col
))
602 if ((chtype
) c
== ACS_VLINE
)
603 c
= mc_tty_frm
[single
? MC_TTY_FRM_VERT
: MC_TTY_FRM_DVERT
];
604 else if ((chtype
) c
== ACS_HLINE
)
605 c
= mc_tty_frm
[single
? MC_TTY_FRM_HORIZ
: MC_TTY_FRM_DHORIZ
];
606 else if ((chtype
) c
== ACS_LTEE
)
607 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTMIDDLE
: MC_TTY_FRM_DLEFTMIDDLE
];
608 else if ((chtype
) c
== ACS_RTEE
)
609 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTMIDDLE
: MC_TTY_FRM_DRIGHTMIDDLE
];
610 else if ((chtype
) c
== ACS_ULCORNER
)
611 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTTOP
: MC_TTY_FRM_DLEFTTOP
];
612 else if ((chtype
) c
== ACS_LLCORNER
)
613 c
= mc_tty_frm
[single
? MC_TTY_FRM_LEFTBOTTOM
: MC_TTY_FRM_DLEFTBOTTOM
];
614 else if ((chtype
) c
== ACS_URCORNER
)
615 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTTOP
: MC_TTY_FRM_DRIGHTTOP
];
616 else if ((chtype
) c
== ACS_LRCORNER
)
617 c
= mc_tty_frm
[single
? MC_TTY_FRM_RIGHTBOTTOM
: MC_TTY_FRM_DRIGHTBOTTOM
];
618 else if ((chtype
) c
== ACS_PLUS
)
619 c
= mc_tty_frm
[MC_TTY_FRM_CROSS
];
627 /* --------------------------------------------------------------------------------------------- */
630 tty_print_string (const char *s
)
635 s
= str_term_form (s
);
636 len
= str_term_width1 (s
);
638 /* line is upper or below the screen or entire line is before or after screen */
639 if (mc_curs_row
< 0 || mc_curs_row
>= LINES
|| mc_curs_col
+ len
<= 0 || mc_curs_col
>= COLS
)
645 /* skip invisible left part */
648 start
= -mc_curs_col
;
654 if (mc_curs_col
>= COLS
)
655 len
= COLS
- (mc_curs_col
- len
);
657 addstr (str_term_substring (s
, start
, len
));
660 /* --------------------------------------------------------------------------------------------- */
663 tty_printf (const char *fmt
, ...)
666 char buf
[BUF_1K
]; /* FIXME: is it enough? */
668 va_start (args
, fmt
);
669 g_vsnprintf (buf
, sizeof (buf
), fmt
, args
);
671 tty_print_string (buf
);
674 /* --------------------------------------------------------------------------------------------- */
677 tty_tgetstr (const char *cap
)
681 return tgetstr ((NCURSES_CONST
char *) cap
, &unused
);
684 /* --------------------------------------------------------------------------------------------- */
693 /* --------------------------------------------------------------------------------------------- */
701 /* --------------------------------------------------------------------------------------------- */