src/termchar.h

   1 /* Flags and parameters describing terminal's characteristics.
   2    Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* Each termcap frame points to its own struct tty_output object in
  21    the output_data.tty field.  The tty_output structure contains the
  22    information that is specific to termcap frames. */
  23
  24 struct tty_output
  25 {
  26   /* The Emacs structure for the tty device this frame is on. */
  27   struct tty_display_info *display_info;
  28
  29   /* There is nothing else here at the moment... */
  30 };
  31
  32 /* Parameters that are shared between frames on the same tty device. */
  33
  34 struct tty_display_info
  35 {
  36   struct tty_display_info *next; /* Chain of all tty devices. */
  37
  38   char *name;                   /* The name of the device file or 0 if
  39                                    stdin/stdout. */
  40   char *type;                   /* The type of the tty. */
  41
  42   /* Input/output */
  43
  44   FILE *input;                  /* The stream to be used for terminal input.
  45                                    NULL if the terminal is suspended. */
  46   FILE *output;                 /* The stream to be used for terminal output.
  47                                    NULL if the terminal is suspended. */
  48
  49   FILE *termscript;             /* If nonzero, send all terminal output
  50                                    characters to this stream also.  */
  51
  52   struct emacs_tty *old_tty;    /* The initial tty mode bits */
  53
  54   int term_initted;             /* 1 if we have been through init_sys_modes. */
  55
  56
  57   int reference_count;          /* Number of frames that are on this display. */
  58
  59   struct terminal *terminal;    /* Points back to the generic terminal
  60                                    structure.  This is sometimes handy. */
  61
  62   /* Info on cursor positioning.  */
  63   struct cm *Wcm;
  64
  65   /* Redisplay. */
  66
  67   Lisp_Object top_frame;        /* The topmost frame on this tty. */
  68
  69   /* The previous frame we displayed on this tty.  */
  70   struct frame *previous_frame;
  71   int previous_color_mode;
  72
  73 #ifdef MSDOS
  74   /* These variables describe the range of text currently shown in its
  75      mouse-face, together with the window they apply to.  As long as
  76      the mouse stays within this range, we need not redraw anything on
  77      its account.  Rows and columns are glyph matrix positions in
  78      MOUSE_FACE_WINDOW.  */
  79   int mouse_face_beg_row, mouse_face_beg_col;
  80   int mouse_face_end_row, mouse_face_end_col;
  81   int mouse_face_past_end;
  82   Lisp_Object mouse_face_window;
  83   int mouse_face_face_id;
  84
  85   /* 1 if a mouse motion event came and we didn't handle it right away because
  86      gc was in progress.  */
  87   int mouse_face_deferred_gc;
  88
  89   /* FRAME and X, Y position of mouse when last checked for
  90      highlighting.  X and Y can be negative or out of range for the frame.  */
  91   struct frame *mouse_face_mouse_frame;
  92   int mouse_face_mouse_x, mouse_face_mouse_y;
  93
  94   /* Nonzero means defer mouse-motion highlighting.  */
  95   int mouse_face_defer;
  96
  97   /* Nonzero means that the mouse highlight should not be shown.  */
  98   int mouse_face_hidden;
  99 #endif  /* !MSDOS */
 100
 101   /* Buffer used internally by termcap (see tgetent in the Termcap
 102      manual).  Only init_tty and delete_tty should change this.  */
 103   char *termcap_term_buffer;
 104
 105   /* Buffer storing terminal description strings (see tgetstr in the
 106      Termcap manual).  Only init_tty and delete_tty should change
 107      this.  */
 108   char *termcap_strings_buffer;
 109
 110   /* Strings, numbers and flags taken from the termcap entry.  */
 111
 112   char *TS_ins_line;            /* "al" */
 113   char *TS_ins_multi_lines;     /* "AL" (one parameter, # lines to insert) */
 114   char *TS_bell;                /* "bl" */
 115   char *TS_clr_to_bottom;       /* "cd" */
 116   char *TS_clr_line;            /* "ce", clear to end of line */
 117   char *TS_clr_frame;           /* "cl" */
 118   char *TS_set_scroll_region;   /* "cs" (2 params, first line and last line) */
 119   char *TS_set_scroll_region_1; /* "cS" (4 params: total lines,
 120                                    lines above scroll region, lines below it,
 121                                    total lines again) */
 122   char *TS_del_char;            /* "dc" */
 123   char *TS_del_multi_chars;     /* "DC" (one parameter, # chars to delete) */
 124   char *TS_del_line;            /* "dl" */
 125   char *TS_del_multi_lines;     /* "DL" (one parameter, # lines to delete) */
 126   char *TS_delete_mode;         /* "dm", enter character-delete mode */
 127   char *TS_end_delete_mode;     /* "ed", leave character-delete mode */
 128   char *TS_end_insert_mode;     /* "ei", leave character-insert mode */
 129   char *TS_ins_char;            /* "ic" */
 130   char *TS_ins_multi_chars;     /* "IC" (one parameter, # chars to insert) */
 131   char *TS_insert_mode;         /* "im", enter character-insert mode */
 132   char *TS_pad_inserted_char;   /* "ip".  Just padding, no commands.  */
 133   char *TS_end_keypad_mode;     /* "ke" */
 134   char *TS_keypad_mode;         /* "ks" */
 135   char *TS_pad_char;            /* "pc", char to use as padding */
 136   char *TS_repeat;              /* "rp" (2 params, # times to repeat
 137                                    and character to be repeated) */
 138   char *TS_end_standout_mode;   /* "se" */
 139   char *TS_fwd_scroll;          /* "sf" */
 140   char *TS_standout_mode;       /* "so" */
 141   char *TS_rev_scroll;          /* "sr" */
 142   char *TS_end_termcap_modes;   /* "te" */
 143   char *TS_termcap_modes;       /* "ti" */
 144   char *TS_visible_bell;        /* "vb" */
 145   char *TS_cursor_normal;       /* "ve" */
 146   char *TS_cursor_visible;      /* "vs" */
 147   char *TS_cursor_invisible;    /* "vi" */
 148   char *TS_set_window;          /* "wi" (4 params, start and end of window,
 149                                    each as vpos and hpos) */
 150
 151   char *TS_enter_bold_mode;     /* "md" -- turn on bold (extra bright mode).  */
 152   char *TS_enter_dim_mode;      /* "mh" -- turn on half-bright mode.  */
 153   char *TS_enter_blink_mode;    /* "mb" -- enter blinking mode.  */
 154   char *TS_enter_reverse_mode;  /* "mr" -- enter reverse video mode.  */
 155   char *TS_exit_underline_mode; /* "us" -- start underlining.  */
 156   char *TS_enter_underline_mode; /* "ue" -- end underlining.  */
 157
 158   /* "as"/"ae" -- start/end alternate character set.  Not really
 159      supported, yet.  */
 160   char *TS_enter_alt_charset_mode;
 161   char *TS_exit_alt_charset_mode;
 162
 163   char *TS_exit_attribute_mode; /* "me" -- switch appearances off.  */
 164
 165   /* Value of the "NC" (no_color_video) capability, or 0 if not present.  */
 166   int TN_no_color_video;
 167
 168   int TN_max_colors;            /* "Co" -- number of colors.  */
 169
 170   /* "pa" -- max. number of color pairs on screen.  Not handled yet.
 171      Could be a problem if not equal to TN_max_colors * TN_max_colors.  */
 172   int TN_max_pairs;
 173
 174   /* "op" -- SVr4 set default pair to its original value.  */
 175   char *TS_orig_pair;
 176
 177   /* "AF"/"AB" or "Sf"/"Sb"-- set ANSI or SVr4 foreground/background color.
 178      1 param, the color index.  */
 179   char *TS_set_foreground;
 180   char *TS_set_background;
 181
 182   int TF_hazeltine;             /* termcap hz flag. */
 183   int TF_insmode_motion;        /* termcap mi flag: can move while in insert mode. */
 184   int TF_standout_motion;       /* termcap mi flag: can move while in standout mode. */
 185   int TF_underscore;            /* termcap ul flag: _ underlines if over-struck on
 186                                    non-blank position.  Must clear before writing _.  */
 187   int TF_teleray;               /* termcap xt flag: many weird consequences.
 188                                    For t1061. */
 189
 190   int RPov;                     /* # chars to start a TS_repeat */
 191
 192   int delete_in_insert_mode;    /* delete mode == insert mode */
 193
 194   int se_is_so;                 /* 1 if same string both enters and leaves
 195                                    standout mode */
 196
 197   int costs_set;                /* Nonzero if costs have been calculated. */
 198
 199   int insert_mode;              /* Nonzero when in insert mode.  */
 200   int standout_mode;            /* Nonzero when in standout mode.  */
 201
 202
 203
 204   /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
 205      keep 0200 bit in input chars.  0 to ignore the 0200 bit.  */
 206
 207   int meta_key;
 208
 209   /* Size of window specified by higher levels.
 210    This is the number of lines, from the top of frame downwards,
 211    which can participate in insert-line/delete-line operations.
 212
 213    Effectively it excludes the bottom frame_lines - specified_window_size
 214    lines from those operations.  */
 215
 216   int specified_window;
 217
 218   /* Flag used in tty_show/hide_cursor.  */
 219
 220   int cursor_hidden;
 221
 222   /* Nonzero means use ^S/^Q for flow control.  */
 223   int flow_control;
 224
 225 };
 226
 227 /* A chain of structures for all tty devices currently in use. */
 228 extern struct tty_display_info *tty_list;
 229
 230
 231 #define FRAME_TTY(f)                            \
 232   (((f)->output_method == output_termcap        \
 233     || (f)->output_method == output_msdos_raw)  \
 234    ? (f)->terminal->display_info.tty            \
 235    : (abort(), (struct tty_display_info *) 0))
 236
 237 #define CURTTY() FRAME_TTY (SELECTED_FRAME())
 238
 239 /* arch-tag: bf9f0d49-842b-42fb-9348-ec8759b27193
 240    (do not change this comment) */