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/* Flags and parameters describing terminal's characteristics.
Copyright (C) 1985-1986, 2001-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include "dispextern.h"
/* Each termcap frame points to its own struct tty_output object in
the output_data.tty field. The tty_output structure contains the
information that is specific to termcap frames. */
struct tty_output
{
/* The Emacs structure for the tty device this frame is on. */
struct tty_display_info *display_info;
/* There is nothing else here at the moment... */
};
enum { TERMCAP_BUFFER_SIZE = 4096 };
/* Parameters that are shared between frames on the same tty device. */
struct tty_display_info
{
struct tty_display_info *next; /* Chain of all tty devices. */
char *name; /* The name of the device file or 0 if
stdin/stdout. */
char *type; /* The type of the tty. */
/* Input/output */
FILE *input; /* The stream to be used for terminal input.
NULL if the terminal is suspended. */
FILE *output; /* The stream to be used for terminal output.
NULL if the terminal is suspended. */
FILE *termscript; /* If nonzero, send all terminal output
characters to this stream also. */
struct emacs_tty *old_tty; /* The initial tty mode bits */
bool_bf term_initted : 1; /* True if we have been through
init_sys_modes. */
int reference_count; /* Number of frames that are on this display. */
struct terminal *terminal; /* Points back to the generic terminal
structure. This is sometimes handy. */
/* Info on cursor positioning. */
struct cm *Wcm;
/* Redisplay. */
Lisp_Object top_frame; /* The topmost frame on this tty. */
/* The previous frame we displayed on this tty. */
struct frame *previous_frame;
int previous_color_mode;
/* Information about the range of text currently shown in
mouse-face. */
Mouse_HLInfo mouse_highlight;
/* Buffer used internally by termcap (see tgetent in the Termcap
manual). Only init_tty should use this. */
char termcap_term_buffer[TERMCAP_BUFFER_SIZE];
/* Buffer storing terminal description strings (see tgetstr in the
Termcap manual). Only init_tty should use this. */
char termcap_strings_buffer[TERMCAP_BUFFER_SIZE];
/* Strings, numbers and flags taken from the termcap entry. */
const char *TS_ins_line; /* "al" */
const char *TS_ins_multi_lines; /* "AL" (one parameter, # lines to insert) */
const char *TS_bell; /* "bl" */
const char *TS_clr_to_bottom; /* "cd" */
const char *TS_clr_line; /* "ce", clear to end of line */
const char *TS_clr_frame; /* "cl" */
const char *TS_set_scroll_region; /* "cs" (2 params, first line and last line) */
const char *TS_set_scroll_region_1; /* "cS" (4 params: total lines,
lines above scroll region, lines below it,
total lines again) */
const char *TS_del_char; /* "dc" */
const char *TS_del_multi_chars; /* "DC" (one parameter, # chars to delete) */
const char *TS_del_line; /* "dl" */
const char *TS_del_multi_lines; /* "DL" (one parameter, # lines to delete) */
const char *TS_delete_mode; /* "dm", enter character-delete mode */
const char *TS_end_delete_mode; /* "ed", leave character-delete mode */
const char *TS_end_insert_mode; /* "ei", leave character-insert mode */
const char *TS_ins_char; /* "ic" */
const char *TS_ins_multi_chars; /* "IC" (one parameter, # chars to insert) */
const char *TS_insert_mode; /* "im", enter character-insert mode */
const char *TS_pad_inserted_char; /* "ip". Just padding, no commands. */
const char *TS_end_keypad_mode; /* "ke" */
const char *TS_keypad_mode; /* "ks" */
const char *TS_pad_char; /* "pc", char to use as padding */
const char *TS_repeat; /* "rp" (2 params, # times to repeat
and character to be repeated) */
const char *TS_end_standout_mode; /* "se" */
const char *TS_fwd_scroll; /* "sf" */
const char *TS_standout_mode; /* "so" */
const char *TS_rev_scroll; /* "sr" */
const char *TS_end_termcap_modes; /* "te" */
const char *TS_termcap_modes; /* "ti" */
const char *TS_visible_bell; /* "vb" */
const char *TS_cursor_normal; /* "ve" */
const char *TS_cursor_visible; /* "vs" */
const char *TS_cursor_invisible; /* "vi" */
const char *TS_set_window; /* "wi" (4 params, start and end of window,
each as vpos and hpos) */
const char *TS_enter_bold_mode; /* "md" -- turn on bold (extra bright mode). */
const char *TS_enter_italic_mode; /* "ZH" -- turn on italics mode. */
const char *TS_enter_dim_mode; /* "mh" -- turn on half-bright mode. */
const char *TS_enter_reverse_mode; /* "mr" -- enter reverse video mode. */
const char *TS_exit_underline_mode; /* "us" -- start underlining. */
const char *TS_enter_underline_mode; /* "ue" -- end underlining. */
/* "as"/"ae" -- start/end alternate character set. Not really
supported, yet. */
const char *TS_enter_alt_charset_mode;
const char *TS_exit_alt_charset_mode;
const char *TS_exit_attribute_mode; /* "me" -- switch appearances off. */
/* Value of the "NC" (no_color_video) capability, or 0 if not present. */
int TN_no_color_video;
int TN_max_colors; /* "Co" -- number of colors. */
/* "pa" -- max. number of color pairs on screen. Not handled yet.
Could be a problem if not equal to TN_max_colors * TN_max_colors. */
int TN_max_pairs;
/* "op" -- SVr4 set default pair to its original value. */
const char *TS_orig_pair;
/* "AF"/"AB" or "Sf"/"Sb"-- set ANSI or SVr4 foreground/background color.
1 param, the color index. */
const char *TS_set_foreground;
const char *TS_set_background;
int TF_hazeltine; /* termcap hz flag. */
int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */
int TF_standout_motion; /* termcap mi flag: can move while in standout mode. */
int TF_underscore; /* termcap ul flag: _ underlines if over-struck on
non-blank position. Must clear before writing _. */
int TF_teleray; /* termcap xt flag: many weird consequences.
For t1061. */
int RPov; /* # chars to start a TS_repeat */
bool_bf delete_in_insert_mode : 1; /* delete mode == insert mode */
bool_bf costs_set : 1; /* True if costs have been calculated. */
bool_bf insert_mode : 1; /* True when in insert mode. */
bool_bf standout_mode : 1; /* True when in standout mode. */
/* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
int meta_key;
/* Size of window specified by higher levels.
This is the number of lines, from the top of frame downwards,
which can participate in insert-line/delete-line operations.
Effectively it excludes the bottom frame_lines - specified_window_size
lines from those operations. */
int specified_window;
/* Flag used in tty_show/hide_cursor. */
bool_bf cursor_hidden : 1;
/* True means use ^S/^Q for flow control. */
bool_bf flow_control : 1;
/* True means we are displaying a TTY menu on this tty. */
bool_bf showing_menu : 1;
/* True means spaces in the text must actually be output;
can't just skip over some columns to leave them blank. */
bool_bf must_write_spaces : 1;
/* True if TTY can insert and delete lines. */
bool_bf line_ins_del_ok : 1;
/* True if TTY can insert and delete chars. */
bool_bf char_ins_del_ok : 1;
/* True if TTY supports setting the scroll window. */
bool_bf scroll_region_ok : 1;
/* True if TTY remembers lines scrolled off bottom. */
bool_bf memory_below_frame : 1;
/* Cost of setting the scroll window, measured in characters. */
int scroll_region_cost;
};
/* A chain of structures for all tty devices currently in use. */
extern struct tty_display_info *tty_list;
#define FRAME_TTY(f) \
(((f)->output_method == output_termcap \
|| (f)->output_method == output_msdos_raw) \
? (f)->terminal->display_info.tty \
: (emacs_abort (), (struct tty_display_info *) 0))
#define CURTTY() FRAME_TTY (SELECTED_FRAME())
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