2 Interface to the terminal controlling library.
5 Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
8 Andrew Borodin <aborodin@vmail.ru>, 2009.
10 This file is part of the Midnight Commander.
12 The Midnight Commander is free software; you can redistribute it
13 and/or modify it under the terms of the GNU General Public License as
14 published by the Free Software Foundation; either version 2 of the
15 License, or (at your option) any later version.
17 The Midnight Commander is distributed in the hope that it will be
18 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
19 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
29 * \brief Source: S-Lang-based tty layer of Midnight Commander
38 #include <sys/types.h> /* size_t */
42 #include "lib/global.h"
43 #include "lib/strutil.h" /* str_term_form */
45 #include "tty-internal.h" /* slow_tty */
47 #include "color-slang.h"
48 #include "color-internal.h"
49 #include "mouse.h" /* Gpm_Event is required in key.h */
50 #include "key.h" /* define_sequence */
54 /*** global variables **************************************************/
56 extern int reset_hp_softkeys
;
58 /*** file scope macro definitions **************************************/
64 #ifndef SLTT_MAX_SCREEN_COLS
65 #define SLTT_MAX_SCREEN_COLS 512
68 #ifndef SLTT_MAX_SCREEN_ROWS
69 #define SLTT_MAX_SCREEN_ROWS 512
72 /*** file scope type declarations **************************************/
74 /*** file scope variables **********************************************/
76 /* Various saved termios settings that we control here */
77 static struct termios boot_mode
;
78 static struct termios new_mode
;
80 /* Controls whether we should wait for input in tty_lowlevel_getch */
81 static gboolean no_slang_delay
;
83 /* This table describes which capabilities we want and which values we
120 KEY_BACKSPACE
, "kb"}, {
126 /*** file scope functions **********************************************/
128 /* HP Terminals have capabilities (pfkey, pfloc, pfx) to program function keys.
129 elm 2.4pl15 invoked with the -K option utilizes these softkeys and the
130 consequence is that function keys don't work in MC sometimes...
131 Unfortunately I don't now the one and only escape sequence to turn off.
132 softkeys (elm uses three different capabilities to turn on softkeys and two.
133 capabilities to turn them off)..
134 Among other things elm uses the pair we already use in slang_keypad. That's.
135 the reason why I call slang_reset_softkeys from slang_keypad. In lack of
136 something better the softkeys are programmed to their defaults from the
137 termcap/terminfo database.
138 The escape sequence to program the softkeys is taken from elm and it is.
139 hardcoded because neither slang nor ncurses 4.1 know how to 'printf' this.
144 slang_reset_softkeys (void)
148 static const char display
[] = " ";
151 for (key
= 1; key
< 9; key
++) {
152 g_snprintf (tmp
, sizeof (tmp
), "k%d", key
);
153 send
= (char *) SLtt_tgetstr (tmp
);
155 g_snprintf (tmp
, sizeof (tmp
), "\033&f%dk%dd%dL%s%s", key
,
156 (int) (sizeof (display
) - 1), (int) strlen (send
), display
, send
);
157 SLtt_write_string (tmp
);
163 do_define_key (int code
, const char *strcap
)
167 seq
= (char *) SLtt_tgetstr ((char *) strcap
);
169 define_sequence (code
, seq
, MCKEY_NOACTION
);
173 load_terminfo_keys (void)
177 for (i
= 0; key_table
[i
].key_code
; i
++)
178 do_define_key (key_table
[i
].key_code
, key_table
[i
].key_name
);
181 /* --------------------------------------------------------------------------------------------- */
182 /*** public functions **************************************************/
183 /* --------------------------------------------------------------------------------------------- */
186 mc_tty_normalize_lines_char (const char *str
)
191 struct mc_tty_lines_struct
{
194 } const lines_codes
[] = {
195 {"\342\224\214", SLSMG_ULCORN_CHAR
},
196 {"\342\224\220", SLSMG_URCORN_CHAR
},
197 {"\342\224\224", SLSMG_LLCORN_CHAR
},
198 {"\342\224\230", SLSMG_LRCORN_CHAR
},
199 {"\342\224\234", SLSMG_LTEE_CHAR
},
200 {"\342\224\244", SLSMG_RTEE_CHAR
},
201 {"\342\224\254", SLSMG_UTEE_CHAR
},
202 {"\342\224\264", SLSMG_DTEE_CHAR
},
203 {"\342\224\200", SLSMG_HLINE_CHAR
},
204 {"\342\224\202", SLSMG_VLINE_CHAR
},
205 {"\342\224\274", SLSMG_PLUS_CHAR
},
213 for (res
= 0; lines_codes
[res
].line
; res
++) {
214 if (strcmp (str
, lines_codes
[res
].line
) == 0)
215 return lines_codes
[res
].line_code
;
218 str2
= mc_tty_normalize_from_utf8 (str
);
219 res
= g_utf8_get_char_validated (str2
, -1);
222 res
= (unsigned char) str2
[0];
228 /* --------------------------------------------------------------------------------------------- */
230 tty_init (gboolean slow
, gboolean ugly_lines
)
233 ugly_line_drawing
= ugly_lines
;
235 SLtt_get_terminfo ();
238 * If the terminal in not in terminfo but begins with a well-known
239 * string such as "linux" or "xterm" S-Lang will go on, but the
240 * terminal size and several other variables won't be initialized
241 * (as of S-Lang 1.4.4). Detect it and abort. Also detect extremely
242 * small, large and negative screen dimensions.
244 if ((COLS
< 10) || (LINES
< 5)
245 || (COLS
> SLTT_MAX_SCREEN_COLS
) || (LINES
> SLTT_MAX_SCREEN_ROWS
)) {
247 _("Screen size %dx%d is not supported.\n"
248 "Check the TERM environment variable.\n"), COLS
, LINES
);
252 tcgetattr (fileno (stdin
), &boot_mode
);
253 /* 255 = ignore abort char; XCTRL('g') for abort char = ^g */
254 SLang_init_tty (XCTRL ('g'), 1, 0);
257 SLtt_Has_Alt_Charset
= 0;
259 /* If SLang uses fileno(stderr) for terminal input MC will hang
260 if we call SLang_getkey between calls to open_error_pipe and
261 close_error_pipe, e.g. when we do a growing view of an gzipped
263 if (SLang_TT_Read_FD
== fileno (stderr
))
264 SLang_TT_Read_FD
= fileno (stdin
);
266 if (tcgetattr (SLang_TT_Read_FD
, &new_mode
) == 0) {
268 new_mode
.c_cc
[VDSUSP
] = NULL_VALUE
; /* to ignore ^Y */
271 new_mode
.c_cc
[VLNEXT
] = NULL_VALUE
; /* to ignore ^V */
273 tcsetattr (SLang_TT_Read_FD
, TCSADRAIN
, &new_mode
);
276 tty_reset_prog_mode ();
277 load_terminfo_keys ();
280 tty_start_interrupt_key ();
282 /* It's the small part from the previous init_key() */
283 init_key_input_fd ();
297 tty_reset_shell_mode ();
301 /* Load the op capability to reset the colors to those that were
302 * active when the program was started up
304 op_cap
= SLtt_tgetstr ((char *) "op");
305 if (op_cap
!= NULL
) {
306 fputs (op_cap
, stdout
);
311 /* Done each time we come back from done mode */
313 tty_reset_prog_mode (void)
315 tcsetattr (SLang_TT_Read_FD
, TCSANOW
, &new_mode
);
317 SLsmg_touch_lines (0, LINES
);
320 /* Called each time we want to shutdown slang screen manager */
322 tty_reset_shell_mode (void)
324 tcsetattr (SLang_TT_Read_FD
, TCSANOW
, &boot_mode
);
330 tcsetattr (SLang_TT_Read_FD
, TCSANOW
, &new_mode
);
334 tty_noraw_mode (void)
344 tty_flush_input (void)
350 tty_keypad (gboolean set
)
354 keypad_string
= (char *) SLtt_tgetstr ((char *) (set
? "ks" : "ke"));
355 if (keypad_string
!= NULL
)
356 SLtt_write_string (keypad_string
);
357 if (set
&& reset_hp_softkeys
)
358 slang_reset_softkeys ();
362 tty_nodelay (gboolean set
)
364 no_slang_delay
= set
;
370 return SLang_TT_Baud_Rate
;
374 tty_lowlevel_getch (void)
378 if (no_slang_delay
&& (SLang_input_pending (0) == 0))
382 if (c
== SLANG_GETKEY_ERROR
) {
384 "SLang_getkey returned SLANG_GETKEY_ERROR\n"
385 "Assuming EOF on stdin and exiting\n");
393 tty_reset_screen (void)
400 tty_touch_screen (void)
402 SLsmg_touch_lines (0, LINES
);
406 tty_gotoyx (int y
, int x
)
412 tty_getyx (int *py
, int *px
)
414 *py
= SLsmg_get_row ();
415 *px
= SLsmg_get_column ();
418 /* if x < 0 or y < 0, draw line staring from current position */
420 tty_draw_hline (int y
, int x
, int ch
, int len
)
423 ch
= mc_tty_ugly_frm
[MC_TTY_FRM_thinhoriz
];
425 if ((y
< 0) || (x
< 0)) {
426 y
= SLsmg_get_row ();
427 x
= SLsmg_get_column ();
435 SLsmg_draw_hline (len
);
443 /* if x < 0 or y < 0, draw line staring from current position */
445 tty_draw_vline (int y
, int x
, int ch
, int len
)
448 ch
= mc_tty_ugly_frm
[MC_TTY_FRM_thinvert
];
450 if ((y
< 0) || (x
< 0)) {
451 y
= SLsmg_get_row ();
452 x
= SLsmg_get_column ();
460 SLsmg_draw_vline (len
);
465 SLsmg_gotorc (y
+ pos
, x
);
475 tty_fill_region (int y
, int x
, int rows
, int cols
, unsigned char ch
)
477 SLsmg_fill_region (y
, x
, rows
, cols
, ch
);
481 tty_set_alt_charset (gboolean alt_charset
)
483 SLsmg_set_char_set ((int) alt_charset
);
487 tty_display_8bit (gboolean what
)
489 SLsmg_Display_Eight_Bit
= what
? 128 : 160;
493 tty_print_char (int c
)
495 SLsmg_write_char ((SLwchar_Type
) ((unsigned int) c
));
499 tty_print_alt_char (int c
, gboolean single
)
501 #define DRAW(x, y) (x == y) \
502 ? SLsmg_draw_object (SLsmg_get_row(), SLsmg_get_column(), x) \
503 : SLsmg_write_char ((unsigned int) y)
506 DRAW (c
, mc_tty_ugly_frm
[MC_TTY_FRM_thinvert
]);
509 DRAW (c
, mc_tty_ugly_frm
[MC_TTY_FRM_thinhoriz
]);
512 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grpleftmiddle
: MC_TTY_FRM_leftmiddle
]);
515 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grprightmiddle
: MC_TTY_FRM_rightmiddle
]);
518 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grplefttop
: MC_TTY_FRM_lefttop
]);
521 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grpleftbottom
: MC_TTY_FRM_leftbottom
]);
524 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grprighttop
: MC_TTY_FRM_righttop
]);
527 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grprightbottom
: MC_TTY_FRM_rightbottom
]);
530 DRAW (c
, mc_tty_ugly_frm
[single
? MC_TTY_FRM_grpcentermiddle
: MC_TTY_FRM_centermiddle
]);
533 SLsmg_write_char ((unsigned int) c
);
539 tty_print_anychar (int c
)
544 int res
= g_unichar_to_utf8 (c
, str
);
551 SLsmg_write_string ((char *) str_term_form (str
));
553 SLsmg_write_char ((SLwchar_Type
) ((unsigned int) c
));
558 tty_print_string (const char *s
)
560 SLsmg_write_string ((char *) str_term_form (s
));
564 tty_printf (const char *fmt
, ...)
568 va_start (args
, fmt
);
569 SLsmg_vprintf ((char *) fmt
, args
);
574 tty_tgetstr (const char *cap
)
576 return SLtt_tgetstr ((char *) cap
);
586 tty_setup_sigwinch (void (*handler
) (int))
589 struct sigaction act
, oact
;
590 act
.sa_handler
= handler
;
591 sigemptyset (&act
.sa_mask
);
594 act
.sa_flags
|= SA_RESTART
;
595 #endif /* SA_RESTART */
596 sigaction (SIGWINCH
, &act
, &oact
);
597 #endif /* SIGWINCH */