1 /* Terminal control module for terminals described by TERMCAP
2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1998, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
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 2, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
22 /* New redisplay, TTY faces by Gerd Moellmann <gerd@gnu.org>. */
33 #include "character.h"
39 #include "termhooks.h"
40 #include "dispextern.h"
44 /* For now, don't try to include termcap.h. On some systems,
45 configure finds a non-standard termcap.h that the main build
48 #if defined HAVE_TERMCAP_H && 0
51 extern void tputs
P_ ((const char *, int, int (*)(int)));
52 extern int tgetent
P_ ((char *, const char *));
53 extern int tgetflag
P_ ((char *id
));
54 extern int tgetnum
P_ ((char *id
));
65 static void turn_on_face
P_ ((struct frame
*, int face_id
));
66 static void turn_off_face
P_ ((struct frame
*, int face_id
));
67 static void tty_show_cursor
P_ ((void));
68 static void tty_hide_cursor
P_ ((void));
71 tputs (a, (int) (FRAME_LINES (XFRAME (selected_frame)) - curY), cmputc)
72 #define OUTPUT1(a) tputs (a, 1, cmputc)
73 #define OUTPUTL(a, lines) tputs (a, lines, cmputc)
75 #define OUTPUT_IF(a) \
78 tputs (a, (int) (FRAME_LINES (XFRAME (selected_frame)) \
82 #define OUTPUT1_IF(a) do { if (a) tputs (a, 1, cmputc); } while (0)
84 /* Display space properties */
86 extern Lisp_Object Qspace
, QCalign_to
, QCwidth
;
88 /* Function to use to ring the bell. */
90 Lisp_Object Vring_bell_function
;
92 /* If true, use "vs", otherwise use "ve" to make the cursor visible. */
94 static int visible_cursor
;
96 /* Terminal characteristics that higher levels want to look at.
97 These are all extern'd in termchar.h */
99 int must_write_spaces
; /* Nonzero means spaces in the text
100 must actually be output; can't just skip
101 over some columns to leave them blank. */
102 int min_padding_speed
; /* Speed below which no padding necessary */
104 int line_ins_del_ok
; /* Terminal can insert and delete lines */
105 int char_ins_del_ok
; /* Terminal can insert and delete chars */
106 int scroll_region_ok
; /* Terminal supports setting the
108 int scroll_region_cost
; /* Cost of setting a scroll window,
109 measured in characters */
110 int memory_below_frame
; /* Terminal remembers lines
111 scrolled off bottom */
112 int fast_clear_end_of_line
; /* Terminal has a `ce' string */
114 /* Nonzero means no need to redraw the entire frame on resuming
115 a suspended Emacs. This is useful on terminals with multiple pages,
116 where one page is used for Emacs and another for all else. */
118 int no_redraw_on_reenter
;
120 /* Hook functions that you can set to snap out the functions in this file.
121 These are all extern'd in termhooks.h */
123 void (*cursor_to_hook
) P_ ((int, int));
124 void (*raw_cursor_to_hook
) P_ ((int, int));
125 void (*clear_to_end_hook
) P_ ((void));
126 void (*clear_frame_hook
) P_ ((void));
127 void (*clear_end_of_line_hook
) P_ ((int));
129 void (*ins_del_lines_hook
) P_ ((int, int));
131 void (*delete_glyphs_hook
) P_ ((int));
133 void (*ring_bell_hook
) P_ ((void));
135 void (*reset_terminal_modes_hook
) P_ ((void));
136 void (*set_terminal_modes_hook
) P_ ((void));
137 void (*update_begin_hook
) P_ ((struct frame
*));
138 void (*update_end_hook
) P_ ((struct frame
*));
139 void (*set_terminal_window_hook
) P_ ((int));
140 void (*insert_glyphs_hook
) P_ ((struct glyph
*, int));
141 void (*write_glyphs_hook
) P_ ((struct glyph
*, int));
142 void (*delete_glyphs_hook
) P_ ((int));
144 int (*read_socket_hook
) P_ ((int, int, struct input_event
*));
146 void (*frame_up_to_date_hook
) P_ ((struct frame
*));
148 /* Return the current position of the mouse.
150 Set *f to the frame the mouse is in, or zero if the mouse is in no
151 Emacs frame. If it is set to zero, all the other arguments are
154 If the motion started in a scroll bar, set *bar_window to the
155 scroll bar's window, *part to the part the mouse is currently over,
156 *x to the position of the mouse along the scroll bar, and *y to the
157 overall length of the scroll bar.
159 Otherwise, set *bar_window to Qnil, and *x and *y to the column and
160 row of the character cell the mouse is over.
162 Set *time to the time the mouse was at the returned position.
164 This should clear mouse_moved until the next motion
167 void (*mouse_position_hook
) P_ ((FRAME_PTR
*f
, int insist
,
168 Lisp_Object
*bar_window
,
169 enum scroll_bar_part
*part
,
172 unsigned long *time
));
174 /* When reading from a minibuffer in a different frame, Emacs wants
175 to shift the highlight from the selected frame to the mini-buffer's
176 frame; under X, this means it lies about where the focus is.
177 This hook tells the window system code to re-decide where to put
180 void (*frame_rehighlight_hook
) P_ ((FRAME_PTR f
));
182 /* If we're displaying frames using a window system that can stack
183 frames on top of each other, this hook allows you to bring a frame
184 to the front, or bury it behind all the other windows. If this
185 hook is zero, that means the device we're displaying on doesn't
186 support overlapping frames, so there's no need to raise or lower
189 If RAISE is non-zero, F is brought to the front, before all other
190 windows. If RAISE is zero, F is sent to the back, behind all other
193 void (*frame_raise_lower_hook
) P_ ((FRAME_PTR f
, int raise
));
195 /* Set the vertical scroll bar for WINDOW to have its upper left corner
196 at (TOP, LEFT), and be LENGTH rows high. Set its handle to
197 indicate that we are displaying PORTION characters out of a total
198 of WHOLE characters, starting at POSITION. If WINDOW doesn't yet
199 have a scroll bar, create one for it. */
201 void (*set_vertical_scroll_bar_hook
)
202 P_ ((struct window
*window
,
203 int portion
, int whole
, int position
));
206 /* The following three hooks are used when we're doing a thorough
207 redisplay of the frame. We don't explicitly know which scroll bars
208 are going to be deleted, because keeping track of when windows go
209 away is a real pain - can you say set-window-configuration?
210 Instead, we just assert at the beginning of redisplay that *all*
211 scroll bars are to be removed, and then save scroll bars from the
212 fiery pit when we actually redisplay their window. */
214 /* Arrange for all scroll bars on FRAME to be removed at the next call
215 to `*judge_scroll_bars_hook'. A scroll bar may be spared if
216 `*redeem_scroll_bar_hook' is applied to its window before the judgment.
218 This should be applied to each frame each time its window tree is
219 redisplayed, even if it is not displaying scroll bars at the moment;
220 if the HAS_SCROLL_BARS flag has just been turned off, only calling
221 this and the judge_scroll_bars_hook will get rid of them.
223 If non-zero, this hook should be safe to apply to any frame,
224 whether or not it can support scroll bars, and whether or not it is
225 currently displaying them. */
227 void (*condemn_scroll_bars_hook
) P_ ((FRAME_PTR frame
));
229 /* Unmark WINDOW's scroll bar for deletion in this judgement cycle.
230 Note that it's okay to redeem a scroll bar that is not condemned. */
232 void (*redeem_scroll_bar_hook
) P_ ((struct window
*window
));
234 /* Remove all scroll bars on FRAME that haven't been saved since the
235 last call to `*condemn_scroll_bars_hook'.
237 This should be applied to each frame after each time its window
238 tree is redisplayed, even if it is not displaying scroll bars at the
239 moment; if the HAS_SCROLL_BARS flag has just been turned off, only
240 calling this and condemn_scroll_bars_hook will get rid of them.
242 If non-zero, this hook should be safe to apply to any frame,
243 whether or not it can support scroll bars, and whether or not it is
244 currently displaying them. */
246 void (*judge_scroll_bars_hook
) P_ ((FRAME_PTR FRAME
));
248 /* Strings, numbers and flags taken from the termcap entry. */
250 char *TS_ins_line
; /* "al" */
251 char *TS_ins_multi_lines
; /* "AL" (one parameter, # lines to insert) */
252 char *TS_bell
; /* "bl" */
253 char *TS_clr_to_bottom
; /* "cd" */
254 char *TS_clr_line
; /* "ce", clear to end of line */
255 char *TS_clr_frame
; /* "cl" */
256 char *TS_set_scroll_region
; /* "cs" (2 params, first line and last line) */
257 char *TS_set_scroll_region_1
; /* "cS" (4 params: total lines,
258 lines above scroll region, lines below it,
259 total lines again) */
260 char *TS_del_char
; /* "dc" */
261 char *TS_del_multi_chars
; /* "DC" (one parameter, # chars to delete) */
262 char *TS_del_line
; /* "dl" */
263 char *TS_del_multi_lines
; /* "DL" (one parameter, # lines to delete) */
264 char *TS_delete_mode
; /* "dm", enter character-delete mode */
265 char *TS_end_delete_mode
; /* "ed", leave character-delete mode */
266 char *TS_end_insert_mode
; /* "ei", leave character-insert mode */
267 char *TS_ins_char
; /* "ic" */
268 char *TS_ins_multi_chars
; /* "IC" (one parameter, # chars to insert) */
269 char *TS_insert_mode
; /* "im", enter character-insert mode */
270 char *TS_pad_inserted_char
; /* "ip". Just padding, no commands. */
271 char *TS_end_keypad_mode
; /* "ke" */
272 char *TS_keypad_mode
; /* "ks" */
273 char *TS_pad_char
; /* "pc", char to use as padding */
274 char *TS_repeat
; /* "rp" (2 params, # times to repeat
275 and character to be repeated) */
276 char *TS_end_standout_mode
; /* "se" */
277 char *TS_fwd_scroll
; /* "sf" */
278 char *TS_standout_mode
; /* "so" */
279 char *TS_rev_scroll
; /* "sr" */
280 char *TS_end_termcap_modes
; /* "te" */
281 char *TS_termcap_modes
; /* "ti" */
282 char *TS_visible_bell
; /* "vb" */
283 char *TS_cursor_normal
; /* "ve" */
284 char *TS_cursor_visible
; /* "vs" */
285 char *TS_cursor_invisible
; /* "vi" */
286 char *TS_set_window
; /* "wi" (4 params, start and end of window,
287 each as vpos and hpos) */
289 /* Value of the "NC" (no_color_video) capability, or 0 if not
292 static int TN_no_color_video
;
294 /* Meaning of bits in no_color_video. Each bit set means that the
295 corresponding attribute cannot be combined with colors. */
299 NC_STANDOUT
= 1 << 0,
300 NC_UNDERLINE
= 1 << 1,
307 NC_ALT_CHARSET
= 1 << 8
310 /* "md" -- turn on bold (extra bright mode). */
312 char *TS_enter_bold_mode
;
314 /* "mh" -- turn on half-bright mode. */
316 char *TS_enter_dim_mode
;
318 /* "mb" -- enter blinking mode. */
320 char *TS_enter_blink_mode
;
322 /* "mr" -- enter reverse video mode. */
324 char *TS_enter_reverse_mode
;
326 /* "us"/"ue" -- start/end underlining. */
328 char *TS_exit_underline_mode
, *TS_enter_underline_mode
;
330 /* "as"/"ae" -- start/end alternate character set. Not really
333 char *TS_enter_alt_charset_mode
, *TS_exit_alt_charset_mode
;
335 /* "me" -- switch appearances off. */
337 char *TS_exit_attribute_mode
;
339 /* "Co" -- number of colors. */
343 /* "pa" -- max. number of color pairs on screen. Not handled yet.
344 Could be a problem if not equal to TN_max_colors * TN_max_colors. */
348 /* "op" -- SVr4 set default pair to its original value. */
352 /* "AF"/"AB" or "Sf"/"Sb"-- set ANSI or SVr4 foreground/background color.
353 1 param, the color index. */
355 char *TS_set_foreground
, *TS_set_background
;
357 int TF_hazeltine
; /* termcap hz flag. */
358 int TF_insmode_motion
; /* termcap mi flag: can move while in insert mode. */
359 int TF_standout_motion
; /* termcap mi flag: can move while in standout mode. */
360 int TF_underscore
; /* termcap ul flag: _ underlines if over-struck on
361 non-blank position. Must clear before writing _. */
362 int TF_teleray
; /* termcap xt flag: many weird consequences.
365 static int RPov
; /* # chars to start a TS_repeat */
367 static int delete_in_insert_mode
; /* delete mode == insert mode */
369 static int se_is_so
; /* 1 if same string both enters and leaves
374 /* The largest frame width in any call to calculate_costs. */
378 /* The largest frame height in any call to calculate_costs. */
382 static int costs_set
; /* Nonzero if costs have been calculated. */
384 int insert_mode
; /* Nonzero when in insert mode. */
385 int standout_mode
; /* Nonzero when in standout mode. */
387 /* Size of window specified by higher levels.
388 This is the number of lines, from the top of frame downwards,
389 which can participate in insert-line/delete-line operations.
391 Effectively it excludes the bottom frame_lines - specified_window_size
392 lines from those operations. */
394 int specified_window
;
396 /* Frame currently being redisplayed; 0 if not currently redisplaying.
397 (Direct output does not count). */
399 FRAME_PTR updating_frame
;
401 /* Provided for lisp packages. */
403 static int system_uses_terminfo
;
405 /* Flag used in tty_show/hide_cursor. */
407 static int tty_cursor_hidden
;
411 extern char *tgetstr ();
415 /* We aren't X windows, but we aren't termcap either. This makes me
416 uncertain as to what value to use for frame.output_method. For
417 this file, we'll define FRAME_TERMCAP_P to be zero so that our
418 output hooks get called instead of the termcap functions. Probably
419 the best long-term solution is to define an output_windows_nt... */
421 #undef FRAME_TERMCAP_P
422 #define FRAME_TERMCAP_P(_f_) 0
423 #endif /* WINDOWSNT */
428 if (!NILP (Vring_bell_function
))
430 Lisp_Object function
;
432 /* Temporarily set the global variable to nil
433 so that if we get an error, it stays nil
434 and we don't call it over and over.
436 We don't specbind it, because that would carefully
437 restore the bad value if there's an error
438 and make the loop of errors happen anyway. */
440 function
= Vring_bell_function
;
441 Vring_bell_function
= Qnil
;
445 Vring_bell_function
= function
;
447 else if (!FRAME_TERMCAP_P (XFRAME (selected_frame
)))
448 (*ring_bell_hook
) ();
450 OUTPUT (TS_visible_bell
&& visible_bell
? TS_visible_bell
: TS_bell
);
454 set_terminal_modes ()
456 if (FRAME_TERMCAP_P (XFRAME (selected_frame
)))
458 if (TS_termcap_modes
)
459 OUTPUT (TS_termcap_modes
);
462 /* Output enough newlines to scroll all the old screen contents
463 off the screen, so it won't be overwritten and lost. */
465 for (i
= 0; i
< FRAME_LINES (XFRAME (selected_frame
)); i
++)
469 OUTPUT_IF (visible_cursor
? TS_cursor_visible
: TS_cursor_normal
);
470 OUTPUT_IF (TS_keypad_mode
);
474 (*set_terminal_modes_hook
) ();
478 reset_terminal_modes ()
480 if (FRAME_TERMCAP_P (XFRAME (selected_frame
)))
482 turn_off_highlight ();
484 OUTPUT_IF (TS_end_keypad_mode
);
485 OUTPUT_IF (TS_cursor_normal
);
486 OUTPUT_IF (TS_end_termcap_modes
);
487 OUTPUT_IF (TS_orig_pair
);
488 /* Output raw CR so kernel can track the cursor hpos. */
491 else if (reset_terminal_modes_hook
)
492 (*reset_terminal_modes_hook
) ();
500 if (!FRAME_TERMCAP_P (f
))
501 update_begin_hook (f
);
508 if (FRAME_TERMCAP_P (f
))
510 if (!XWINDOW (selected_window
)->cursor_off_p
)
513 background_highlight ();
518 updating_frame
= NULL
;
522 set_terminal_window (size
)
525 if (FRAME_TERMCAP_P (updating_frame
))
527 specified_window
= size
? size
: FRAME_LINES (updating_frame
);
528 if (scroll_region_ok
)
529 set_scroll_region (0, specified_window
);
532 set_terminal_window_hook (size
);
536 set_scroll_region (start
, stop
)
540 struct frame
*sf
= XFRAME (selected_frame
);
542 if (TS_set_scroll_region
)
543 buf
= tparam (TS_set_scroll_region
, 0, 0, start
, stop
- 1);
544 else if (TS_set_scroll_region_1
)
545 buf
= tparam (TS_set_scroll_region_1
, 0, 0,
546 FRAME_LINES (sf
), start
,
547 FRAME_LINES (sf
) - stop
,
550 buf
= tparam (TS_set_window
, 0, 0, start
, 0, stop
, FRAME_COLS (sf
));
562 OUTPUT (TS_insert_mode
);
570 OUTPUT (TS_end_insert_mode
);
574 /* Handle highlighting. */
577 turn_off_highlight ()
580 OUTPUT_IF (TS_end_standout_mode
);
588 OUTPUT_IF (TS_standout_mode
);
596 turn_off_highlight ();
598 turn_on_highlight ();
602 /* Make cursor invisible. */
607 if (tty_cursor_hidden
== 0)
609 tty_cursor_hidden
= 1;
610 OUTPUT_IF (TS_cursor_invisible
);
615 /* Ensure that cursor is visible. */
620 if (tty_cursor_hidden
)
622 tty_cursor_hidden
= 0;
623 OUTPUT_IF (TS_cursor_normal
);
625 OUTPUT_IF (TS_cursor_visible
);
630 /* Set standout mode to the state it should be in for
631 empty space inside windows. What this is,
632 depends on the user option inverse-video. */
635 background_highlight ()
638 turn_on_highlight ();
640 turn_off_highlight ();
643 /* Set standout mode to the mode specified for the text to be output. */
646 highlight_if_desired ()
649 turn_on_highlight ();
651 turn_off_highlight ();
655 /* Move cursor to row/column position VPOS/HPOS. HPOS/VPOS are
656 frame-relative coordinates. */
659 cursor_to (vpos
, hpos
)
662 struct frame
*f
= updating_frame
? updating_frame
: XFRAME (selected_frame
);
664 if (! FRAME_TERMCAP_P (f
) && cursor_to_hook
)
666 (*cursor_to_hook
) (vpos
, hpos
);
670 /* Detect the case where we are called from reset_sys_modes
671 and the costs have never been calculated. Do nothing. */
675 if (curY
== vpos
&& curX
== hpos
)
677 if (!TF_standout_motion
)
678 background_highlight ();
679 if (!TF_insmode_motion
)
684 /* Similar but don't take any account of the wasted characters. */
687 raw_cursor_to (row
, col
)
690 struct frame
*f
= updating_frame
? updating_frame
: XFRAME (selected_frame
);
691 if (! FRAME_TERMCAP_P (f
))
693 (*raw_cursor_to_hook
) (row
, col
);
696 if (curY
== row
&& curX
== col
)
698 if (!TF_standout_motion
)
699 background_highlight ();
700 if (!TF_insmode_motion
)
705 /* Erase operations */
707 /* clear from cursor to end of frame */
713 if (clear_to_end_hook
&& ! FRAME_TERMCAP_P (updating_frame
))
715 (*clear_to_end_hook
) ();
718 if (TS_clr_to_bottom
)
720 background_highlight ();
721 OUTPUT (TS_clr_to_bottom
);
725 for (i
= curY
; i
< FRAME_LINES (XFRAME (selected_frame
)); i
++)
728 clear_end_of_line (FRAME_COLS (XFRAME (selected_frame
)));
733 /* Clear entire frame */
738 struct frame
*sf
= XFRAME (selected_frame
);
741 && ! FRAME_TERMCAP_P ((updating_frame
? updating_frame
: sf
)))
743 (*clear_frame_hook
) ();
748 background_highlight ();
749 OUTPUT (TS_clr_frame
);
759 /* Clear from cursor to end of line.
760 Assume that the line is already clear starting at column first_unused_hpos.
762 Note that the cursor may be moved, on terminals lacking a `ce' string. */
765 clear_end_of_line (first_unused_hpos
)
766 int first_unused_hpos
;
770 if (clear_end_of_line_hook
771 && ! FRAME_TERMCAP_P ((updating_frame
773 : XFRAME (selected_frame
))))
775 (*clear_end_of_line_hook
) (first_unused_hpos
);
779 /* Detect the case where we are called from reset_sys_modes
780 and the costs have never been calculated. Do nothing. */
784 if (curX
>= first_unused_hpos
)
786 background_highlight ();
789 OUTPUT1 (TS_clr_line
);
792 { /* have to do it the hard way */
793 struct frame
*sf
= XFRAME (selected_frame
);
796 /* Do not write in last row last col with Auto-wrap on. */
797 if (AutoWrap
&& curY
== FRAME_LINES (sf
) - 1
798 && first_unused_hpos
== FRAME_COLS (sf
))
801 for (i
= curX
; i
< first_unused_hpos
; i
++)
804 fputc (' ', termscript
);
807 cmplus (first_unused_hpos
- curX
);
811 /* Buffers to store the source and result of code conversion for terminal. */
812 static unsigned char *encode_terminal_src
;
813 static unsigned char *encode_terminal_dst
;
814 /* Allocated sizes of the above buffers. */
815 static int encode_terminal_src_size
;
816 static int encode_terminal_dst_size
;
818 /* Encode SRC_LEN glyphs starting at SRC to terminal output codes.
819 Set CODING->produced to the byte-length of the resulting byte
820 sequence, and return a pointer to that byte sequence. */
823 encode_terminal_code (src
, src_len
, coding
)
826 struct coding_system
*coding
;
828 struct glyph
*src_end
= src
+ src_len
;
831 int nchars
, nbytes
, required
;
832 register int tlen
= GLYPH_TABLE_LENGTH
;
833 register Lisp_Object
*tbase
= GLYPH_TABLE_BASE
;
834 Lisp_Object charset_list
;
836 /* Allocate sufficient size of buffer to store all characters in
837 multibyte-form. But, it may be enlarged on demand if
838 Vglyph_table contains a string. */
839 required
= MAX_MULTIBYTE_LENGTH
* src_len
;
840 if (encode_terminal_src_size
< required
)
842 if (encode_terminal_src_size
== 0)
843 encode_terminal_src
= xmalloc (required
);
845 encode_terminal_src
= xrealloc (encode_terminal_src
, required
);
846 encode_terminal_src_size
= required
;
849 charset_list
= coding_charset_list (coding
);
851 buf
= encode_terminal_src
;
853 while (src
< src_end
)
855 /* We must skip glyphs to be padded for a wide character. */
856 if (! CHAR_GLYPH_PADDING_P (*src
))
862 g
= GLYPH_FROM_CHAR_GLYPH (src
[0]);
864 if (g
< 0 || g
>= tlen
)
866 /* This glyph doesn't has an entry in Vglyph_table. */
871 /* This glyph has an entry in Vglyph_table,
872 so process any alias before testing for simpleness. */
873 GLYPH_FOLLOW_ALIASES (tbase
, tlen
, g
);
875 if (GLYPH_SIMPLE_P (tbase
, tlen
, g
))
876 /* We set the multi-byte form of a character in G
877 (that should be an ASCII character) at WORKBUF. */
878 c
= FAST_GLYPH_CHAR (g
);
880 /* We have a string in Vglyph_table. */
886 if (char_charset (c
, charset_list
, NULL
))
888 /* Store the multibyte form of C at BUF. */
889 buf
+= CHAR_STRING (c
, buf
);
894 /* C is not encodable. */
897 while (src
+ 1 < src_end
&& CHAR_GLYPH_PADDING_P (src
[1]))
907 unsigned char *p
= SDATA (string
), *pend
= p
+ SBYTES (string
);
909 if (! STRING_MULTIBYTE (string
))
910 string
= string_to_multibyte (string
);
911 nbytes
= buf
- encode_terminal_src
;
912 if (encode_terminal_src_size
< nbytes
+ SBYTES (string
))
914 encode_terminal_src_size
= nbytes
+ SBYTES (string
);
915 encode_terminal_src
= xrealloc (encode_terminal_src
,
916 encode_terminal_src_size
);
917 buf
= encode_terminal_src
+ nbytes
;
919 bcopy (SDATA (string
), buf
, SBYTES (string
));
920 buf
+= SBYTES (string
);
921 nchars
+= SCHARS (string
);
929 coding
->produced
= 0;
933 nbytes
= buf
- encode_terminal_src
;
934 coding
->source
= encode_terminal_src
;
935 if (encode_terminal_dst_size
== 0)
937 encode_terminal_dst_size
= encode_terminal_src_size
;
938 encode_terminal_dst
= xmalloc (encode_terminal_dst_size
);
940 coding
->destination
= encode_terminal_dst
;
941 coding
->dst_bytes
= encode_terminal_dst_size
;
942 encode_coding_object (coding
, Qnil
, 0, 0, nchars
, nbytes
, Qnil
);
943 /* coding->destination may have been reallocated. */
944 encode_terminal_dst
= coding
->destination
;
945 encode_terminal_dst_size
= coding
->dst_bytes
;
947 return (encode_terminal_dst
);
952 write_glyphs (string
, len
)
953 register struct glyph
*string
;
956 int produced
, consumed
;
957 struct frame
*sf
= XFRAME (selected_frame
);
958 struct frame
*f
= updating_frame
? updating_frame
: sf
;
959 unsigned char *conversion_buffer
;
960 struct coding_system
*coding
;
962 if (write_glyphs_hook
963 && ! FRAME_TERMCAP_P (f
))
965 (*write_glyphs_hook
) (string
, len
);
972 /* Don't dare write in last column of bottom line, if Auto-Wrap,
973 since that would scroll the whole frame on some terminals. */
976 && curY
+ 1 == FRAME_LINES (sf
)
977 && (curX
+ len
) == FRAME_COLS (sf
))
984 /* If terminal_coding does any conversion, use it, otherwise use
985 safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here
986 because it always return 1 if the member src_multibyte is 1. */
987 coding
= (terminal_coding
.common_flags
& CODING_REQUIRE_ENCODING_MASK
988 ? &terminal_coding
: &safe_terminal_coding
);
989 /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
991 coding
->mode
&= ~CODING_MODE_LAST_BLOCK
;
995 /* Identify a run of glyphs with the same face. */
996 int face_id
= string
->face_id
;
999 for (n
= 1; n
< len
; ++n
)
1000 if (string
[n
].face_id
!= face_id
)
1003 /* Turn appearance modes of the face of the run on. */
1004 highlight_if_desired ();
1005 turn_on_face (f
, face_id
);
1008 /* This is the last run. */
1009 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
1010 conversion_buffer
= encode_terminal_code (string
, n
, coding
);
1011 if (coding
->produced
> 0)
1013 fwrite (conversion_buffer
, 1, coding
->produced
, stdout
);
1014 if (ferror (stdout
))
1017 fwrite (conversion_buffer
, 1, coding
->produced
, termscript
);
1022 /* Turn appearance modes off. */
1023 turn_off_face (f
, face_id
);
1024 turn_off_highlight ();
1030 /* If start is zero, insert blanks instead of a string at start */
1033 insert_glyphs (start
, len
)
1034 register struct glyph
*start
;
1038 struct glyph
*glyph
= NULL
;
1039 struct frame
*f
, *sf
;
1040 unsigned char *conversion_buffer
;
1041 unsigned char space
[1];
1042 struct coding_system
*coding
;
1047 if (insert_glyphs_hook
)
1049 (*insert_glyphs_hook
) (start
, len
);
1053 sf
= XFRAME (selected_frame
);
1054 f
= updating_frame
? updating_frame
: sf
;
1056 if (TS_ins_multi_chars
)
1058 buf
= tparam (TS_ins_multi_chars
, 0, 0, len
);
1062 write_glyphs (start
, len
);
1070 space
[0] = SPACEGLYPH
;
1072 /* If terminal_coding does any conversion, use it, otherwise use
1073 safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here
1074 because it always return 1 if the member src_multibyte is 1. */
1075 coding
= (terminal_coding
.common_flags
& CODING_REQUIRE_ENCODING_MASK
1076 ? &terminal_coding
: &safe_terminal_coding
);
1077 /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
1079 coding
->mode
&= ~CODING_MODE_LAST_BLOCK
;
1083 OUTPUT1_IF (TS_ins_char
);
1086 conversion_buffer
= space
;
1087 coding
->produced
= 1;
1091 highlight_if_desired ();
1092 turn_on_face (f
, start
->face_id
);
1095 /* We must open sufficient space for a character which
1096 occupies more than one column. */
1097 while (len
&& CHAR_GLYPH_PADDING_P (*start
))
1099 OUTPUT1_IF (TS_ins_char
);
1104 /* This is the last glyph. */
1105 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
1107 conversion_buffer
= encode_terminal_code (glyph
, 1, coding
);
1110 if (coding
->produced
> 0)
1112 fwrite (conversion_buffer
, 1, coding
->produced
, stdout
);
1113 if (ferror (stdout
))
1116 fwrite (conversion_buffer
, 1, coding
->produced
, termscript
);
1119 OUTPUT1_IF (TS_pad_inserted_char
);
1122 turn_off_face (f
, glyph
->face_id
);
1123 turn_off_highlight ();
1137 if (delete_glyphs_hook
&& ! FRAME_TERMCAP_P (updating_frame
))
1139 (*delete_glyphs_hook
) (n
);
1143 if (delete_in_insert_mode
)
1150 OUTPUT_IF (TS_delete_mode
);
1153 if (TS_del_multi_chars
)
1155 buf
= tparam (TS_del_multi_chars
, 0, 0, n
);
1160 for (i
= 0; i
< n
; i
++)
1161 OUTPUT1 (TS_del_char
);
1162 if (!delete_in_insert_mode
)
1163 OUTPUT_IF (TS_end_delete_mode
);
1166 /* Insert N lines at vpos VPOS. If N is negative, delete -N lines. */
1169 ins_del_lines (vpos
, n
)
1172 char *multi
= n
> 0 ? TS_ins_multi_lines
: TS_del_multi_lines
;
1173 char *single
= n
> 0 ? TS_ins_line
: TS_del_line
;
1174 char *scroll
= n
> 0 ? TS_rev_scroll
: TS_fwd_scroll
;
1177 register int i
= n
> 0 ? n
: -n
;
1180 if (ins_del_lines_hook
&& ! FRAME_TERMCAP_P (updating_frame
))
1182 (*ins_del_lines_hook
) (vpos
, n
);
1186 sf
= XFRAME (selected_frame
);
1188 /* If the lines below the insertion are being pushed
1189 into the end of the window, this is the same as clearing;
1190 and we know the lines are already clear, since the matching
1191 deletion has already been done. So can ignore this. */
1192 /* If the lines below the deletion are blank lines coming
1193 out of the end of the window, don't bother,
1194 as there will be a matching inslines later that will flush them. */
1195 if (scroll_region_ok
&& vpos
+ i
>= specified_window
)
1197 if (!memory_below_frame
&& vpos
+ i
>= FRAME_LINES (sf
))
1202 raw_cursor_to (vpos
, 0);
1203 background_highlight ();
1204 buf
= tparam (multi
, 0, 0, i
);
1210 raw_cursor_to (vpos
, 0);
1211 background_highlight ();
1219 set_scroll_region (vpos
, specified_window
);
1221 raw_cursor_to (specified_window
- 1, 0);
1223 raw_cursor_to (vpos
, 0);
1224 background_highlight ();
1226 OUTPUTL (scroll
, specified_window
- vpos
);
1227 set_scroll_region (0, specified_window
);
1230 if (!scroll_region_ok
&& memory_below_frame
&& n
< 0)
1232 cursor_to (FRAME_LINES (sf
) + n
, 0);
1237 /* Compute cost of sending "str", in characters,
1238 not counting any line-dependent padding. */
1246 tputs (str
, 0, evalcost
);
1250 /* Compute cost of sending "str", in characters,
1251 counting any line-dependent padding at one line. */
1254 string_cost_one_line (str
)
1259 tputs (str
, 1, evalcost
);
1263 /* Compute per line amount of line-dependent padding,
1264 in tenths of characters. */
1272 tputs (str
, 0, evalcost
);
1275 tputs (str
, 10, evalcost
);
1280 /* char_ins_del_cost[n] is cost of inserting N characters.
1281 char_ins_del_cost[-n] is cost of deleting N characters.
1282 The length of this vector is based on max_frame_cols. */
1284 int *char_ins_del_vector
;
1286 #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_COLS ((f))])
1291 calculate_ins_del_char_costs (frame
)
1294 int ins_startup_cost
, del_startup_cost
;
1295 int ins_cost_per_char
, del_cost_per_char
;
1299 if (TS_ins_multi_chars
)
1301 ins_cost_per_char
= 0;
1302 ins_startup_cost
= string_cost_one_line (TS_ins_multi_chars
);
1304 else if (TS_ins_char
|| TS_pad_inserted_char
1305 || (TS_insert_mode
&& TS_end_insert_mode
))
1307 ins_startup_cost
= (30 * (string_cost (TS_insert_mode
)
1308 + string_cost (TS_end_insert_mode
))) / 100;
1309 ins_cost_per_char
= (string_cost_one_line (TS_ins_char
)
1310 + string_cost_one_line (TS_pad_inserted_char
));
1314 ins_startup_cost
= 9999;
1315 ins_cost_per_char
= 0;
1318 if (TS_del_multi_chars
)
1320 del_cost_per_char
= 0;
1321 del_startup_cost
= string_cost_one_line (TS_del_multi_chars
);
1323 else if (TS_del_char
)
1325 del_startup_cost
= (string_cost (TS_delete_mode
)
1326 + string_cost (TS_end_delete_mode
));
1327 if (delete_in_insert_mode
)
1328 del_startup_cost
/= 2;
1329 del_cost_per_char
= string_cost_one_line (TS_del_char
);
1333 del_startup_cost
= 9999;
1334 del_cost_per_char
= 0;
1337 /* Delete costs are at negative offsets */
1338 p
= &char_ins_del_cost (frame
)[0];
1339 for (i
= FRAME_COLS (frame
); --i
>= 0;)
1340 *--p
= (del_startup_cost
+= del_cost_per_char
);
1342 /* Doing nothing is free */
1343 p
= &char_ins_del_cost (frame
)[0];
1346 /* Insert costs are at positive offsets */
1347 for (i
= FRAME_COLS (frame
); --i
>= 0;)
1348 *p
++ = (ins_startup_cost
+= ins_cost_per_char
);
1352 calculate_costs (frame
)
1355 register char *f
= (TS_set_scroll_region
1356 ? TS_set_scroll_region
1357 : TS_set_scroll_region_1
);
1359 FRAME_COST_BAUD_RATE (frame
) = baud_rate
;
1361 scroll_region_cost
= string_cost (f
);
1363 /* These variables are only used for terminal stuff. They are allocated
1364 once for the terminal frame of X-windows emacs, but not used afterwards.
1366 char_ins_del_vector (i.e., char_ins_del_cost) isn't used because
1367 X turns off char_ins_del_ok. */
1369 max_frame_lines
= max (max_frame_lines
, FRAME_LINES (frame
));
1370 max_frame_cols
= max (max_frame_cols
, FRAME_COLS (frame
));
1374 if (char_ins_del_vector
!= 0)
1376 = (int *) xrealloc (char_ins_del_vector
,
1378 + 2 * max_frame_cols
* sizeof (int)));
1381 = (int *) xmalloc (sizeof (int)
1382 + 2 * max_frame_cols
* sizeof (int));
1384 bzero (char_ins_del_vector
, (sizeof (int)
1385 + 2 * max_frame_cols
* sizeof (int)));
1387 if (f
&& (!TS_ins_line
&& !TS_del_line
))
1388 do_line_insertion_deletion_costs (frame
,
1389 TS_rev_scroll
, TS_ins_multi_lines
,
1390 TS_fwd_scroll
, TS_del_multi_lines
,
1393 do_line_insertion_deletion_costs (frame
,
1394 TS_ins_line
, TS_ins_multi_lines
,
1395 TS_del_line
, TS_del_multi_lines
,
1398 calculate_ins_del_char_costs (frame
);
1400 /* Don't use TS_repeat if its padding is worse than sending the chars */
1401 if (TS_repeat
&& per_line_cost (TS_repeat
) * baud_rate
< 9000)
1402 RPov
= string_cost (TS_repeat
);
1404 RPov
= FRAME_COLS (frame
) * 2;
1406 cmcostinit (); /* set up cursor motion costs */
1413 /* Termcap capability names that correspond directly to X keysyms.
1414 Some of these (marked "terminfo") aren't supplied by old-style
1415 (Berkeley) termcap entries. They're listed in X keysym order;
1416 except we put the keypad keys first, so that if they clash with
1417 other keys (as on the IBM PC keyboard) they get overridden.
1420 static struct fkey_table keys
[] =
1422 {"kh", "home"}, /* termcap */
1423 {"kl", "left"}, /* termcap */
1424 {"ku", "up"}, /* termcap */
1425 {"kr", "right"}, /* termcap */
1426 {"kd", "down"}, /* termcap */
1427 {"%8", "prior"}, /* terminfo */
1428 {"%5", "next"}, /* terminfo */
1429 {"@7", "end"}, /* terminfo */
1430 {"@1", "begin"}, /* terminfo */
1431 {"*6", "select"}, /* terminfo */
1432 {"%9", "print"}, /* terminfo */
1433 {"@4", "execute"}, /* terminfo --- actually the `command' key */
1435 * "insert" --- see below
1437 {"&8", "undo"}, /* terminfo */
1438 {"%0", "redo"}, /* terminfo */
1439 {"%7", "menu"}, /* terminfo --- actually the `options' key */
1440 {"@0", "find"}, /* terminfo */
1441 {"@2", "cancel"}, /* terminfo */
1442 {"%1", "help"}, /* terminfo */
1444 * "break" goes here, but can't be reliably intercepted with termcap
1446 {"&4", "reset"}, /* terminfo --- actually `restart' */
1448 * "system" and "user" --- no termcaps
1450 {"kE", "clearline"}, /* terminfo */
1451 {"kA", "insertline"}, /* terminfo */
1452 {"kL", "deleteline"}, /* terminfo */
1453 {"kI", "insertchar"}, /* terminfo */
1454 {"kD", "deletechar"}, /* terminfo */
1455 {"kB", "backtab"}, /* terminfo */
1457 * "kp_backtab", "kp-space", "kp-tab" --- no termcaps
1459 {"@8", "kp-enter"}, /* terminfo */
1461 * "kp-f1", "kp-f2", "kp-f3" "kp-f4",
1462 * "kp-multiply", "kp-add", "kp-separator",
1463 * "kp-subtract", "kp-decimal", "kp-divide", "kp-0";
1464 * --- no termcaps for any of these.
1466 {"K4", "kp-1"}, /* terminfo */
1468 * "kp-2" --- no termcap
1470 {"K5", "kp-3"}, /* terminfo */
1472 * "kp-4" --- no termcap
1474 {"K2", "kp-5"}, /* terminfo */
1476 * "kp-6" --- no termcap
1478 {"K1", "kp-7"}, /* terminfo */
1480 * "kp-8" --- no termcap
1482 {"K3", "kp-9"}, /* terminfo */
1484 * "kp-equal" --- no termcap
1496 {"&0", "S-cancel"}, /*shifted cancel key*/
1497 {"&9", "S-begin"}, /*shifted begin key*/
1498 {"*0", "S-find"}, /*shifted find key*/
1499 {"*1", "S-execute"}, /*shifted execute? actually shifted command key*/
1500 {"*4", "S-delete"}, /*shifted delete-character key*/
1501 {"*7", "S-end"}, /*shifted end key*/
1502 {"*8", "S-clearline"}, /*shifted clear-to end-of-line key*/
1503 {"#1", "S-help"}, /*shifted help key*/
1504 {"#2", "S-home"}, /*shifted home key*/
1505 {"#3", "S-insert"}, /*shifted insert-character key*/
1506 {"#4", "S-left"}, /*shifted left-arrow key*/
1507 {"%d", "S-menu"}, /*shifted menu? actually shifted options key*/
1508 {"%c", "S-next"}, /*shifted next key*/
1509 {"%e", "S-prior"}, /*shifted previous key*/
1510 {"%f", "S-print"}, /*shifted print key*/
1511 {"%g", "S-redo"}, /*shifted redo key*/
1512 {"%i", "S-right"}, /*shifted right-arrow key*/
1513 {"!3", "S-undo"} /*shifted undo key*/
1516 static char **term_get_fkeys_arg
;
1517 static Lisp_Object
term_get_fkeys_1 ();
1519 /* Find the escape codes sent by the function keys for Vfunction_key_map.
1520 This function scans the termcap function key sequence entries, and
1521 adds entries to Vfunction_key_map for each function key it finds. */
1524 term_get_fkeys (address
)
1527 /* We run the body of the function (term_get_fkeys_1) and ignore all Lisp
1528 errors during the call. The only errors should be from Fdefine_key
1529 when given a key sequence containing an invalid prefix key. If the
1530 termcap defines function keys which use a prefix that is already bound
1531 to a command by the default bindings, we should silently ignore that
1532 function key specification, rather than giving the user an error and
1533 refusing to run at all on such a terminal. */
1535 extern Lisp_Object
Fidentity ();
1536 term_get_fkeys_arg
= address
;
1537 internal_condition_case (term_get_fkeys_1
, Qerror
, Fidentity
);
1545 char **address
= term_get_fkeys_arg
;
1547 /* This can happen if CANNOT_DUMP or with strange options. */
1549 Vfunction_key_map
= Fmake_sparse_keymap (Qnil
);
1551 for (i
= 0; i
< (sizeof (keys
)/sizeof (keys
[0])); i
++)
1553 char *sequence
= tgetstr (keys
[i
].cap
, address
);
1555 Fdefine_key (Vfunction_key_map
, build_string (sequence
),
1556 Fmake_vector (make_number (1),
1557 intern (keys
[i
].name
)));
1560 /* The uses of the "k0" capability are inconsistent; sometimes it
1561 describes F10, whereas othertimes it describes F0 and "k;" describes F10.
1562 We will attempt to politely accommodate both systems by testing for
1563 "k;", and if it is present, assuming that "k0" denotes F0, otherwise F10.
1566 char *k_semi
= tgetstr ("k;", address
);
1567 char *k0
= tgetstr ("k0", address
);
1568 char *k0_name
= "f10";
1573 /* Define f0 first, so that f10 takes precedence in case the
1574 key sequences happens to be the same. */
1575 Fdefine_key (Vfunction_key_map
, build_string (k0
),
1576 Fmake_vector (make_number (1), intern ("f0")));
1577 Fdefine_key (Vfunction_key_map
, build_string (k_semi
),
1578 Fmake_vector (make_number (1), intern ("f10")));
1581 Fdefine_key (Vfunction_key_map
, build_string (k0
),
1582 Fmake_vector (make_number (1), intern (k0_name
)));
1585 /* Set up cookies for numbered function keys above f10. */
1587 char fcap
[3], fkey
[4];
1589 fcap
[0] = 'F'; fcap
[2] = '\0';
1590 for (i
= 11; i
< 64; i
++)
1593 fcap
[1] = '1' + i
- 11;
1595 fcap
[1] = 'A' + i
- 20;
1597 fcap
[1] = 'a' + i
- 46;
1600 char *sequence
= tgetstr (fcap
, address
);
1603 sprintf (fkey
, "f%d", i
);
1604 Fdefine_key (Vfunction_key_map
, build_string (sequence
),
1605 Fmake_vector (make_number (1),
1613 * Various mappings to try and get a better fit.
1616 #define CONDITIONAL_REASSIGN(cap1, cap2, sym) \
1617 if (!tgetstr (cap1, address)) \
1619 char *sequence = tgetstr (cap2, address); \
1621 Fdefine_key (Vfunction_key_map, build_string (sequence), \
1622 Fmake_vector (make_number (1), \
1626 /* if there's no key_next keycap, map key_npage to `next' keysym */
1627 CONDITIONAL_REASSIGN ("%5", "kN", "next");
1628 /* if there's no key_prev keycap, map key_ppage to `previous' keysym */
1629 CONDITIONAL_REASSIGN ("%8", "kP", "prior");
1630 /* if there's no key_dc keycap, map key_ic to `insert' keysym */
1631 CONDITIONAL_REASSIGN ("kD", "kI", "insert");
1632 /* if there's no key_end keycap, map key_ll to 'end' keysym */
1633 CONDITIONAL_REASSIGN ("@7", "kH", "end");
1635 /* IBM has their own non-standard dialect of terminfo.
1636 If the standard name isn't found, try the IBM name. */
1637 CONDITIONAL_REASSIGN ("kB", "KO", "backtab");
1638 CONDITIONAL_REASSIGN ("@4", "kJ", "execute"); /* actually "action" */
1639 CONDITIONAL_REASSIGN ("@4", "kc", "execute"); /* actually "command" */
1640 CONDITIONAL_REASSIGN ("%7", "ki", "menu");
1641 CONDITIONAL_REASSIGN ("@7", "kw", "end");
1642 CONDITIONAL_REASSIGN ("F1", "k<", "f11");
1643 CONDITIONAL_REASSIGN ("F2", "k>", "f12");
1644 CONDITIONAL_REASSIGN ("%1", "kq", "help");
1645 CONDITIONAL_REASSIGN ("*6", "kU", "select");
1646 #undef CONDITIONAL_REASSIGN
1653 /***********************************************************************
1654 Character Display Information
1655 ***********************************************************************/
1657 static void append_glyph
P_ ((struct it
*));
1658 static void produce_stretch_glyph
P_ ((struct it
*));
1661 /* Append glyphs to IT's glyph_row. Called from produce_glyphs for
1662 terminal frames if IT->glyph_row != NULL. IT->char_to_display is
1663 the character for which to produce glyphs; IT->face_id contains the
1664 character's face. Padding glyphs are appended if IT->c has a
1665 IT->pixel_width > 1. */
1671 struct glyph
*glyph
, *end
;
1674 xassert (it
->glyph_row
);
1675 glyph
= (it
->glyph_row
->glyphs
[it
->area
]
1676 + it
->glyph_row
->used
[it
->area
]);
1677 end
= it
->glyph_row
->glyphs
[1 + it
->area
];
1680 i
< it
->pixel_width
&& glyph
< end
;
1683 glyph
->type
= CHAR_GLYPH
;
1684 glyph
->pixel_width
= 1;
1685 glyph
->u
.ch
= it
->char_to_display
;
1686 glyph
->face_id
= it
->face_id
;
1687 glyph
->padding_p
= i
> 0;
1688 glyph
->charpos
= CHARPOS (it
->position
);
1689 glyph
->object
= it
->object
;
1691 ++it
->glyph_row
->used
[it
->area
];
1697 /* Produce glyphs for the display element described by IT. *IT
1698 specifies what we want to produce a glyph for (character, image, ...),
1699 and where in the glyph matrix we currently are (glyph row and hpos).
1700 produce_glyphs fills in output fields of *IT with information such as the
1701 pixel width and height of a character, and maybe output actual glyphs at
1702 the same time if IT->glyph_row is non-null. See the explanation of
1703 struct display_iterator in dispextern.h for an overview.
1705 produce_glyphs also stores the result of glyph width, ascent
1706 etc. computations in *IT.
1708 IT->glyph_row may be null, in which case produce_glyphs does not
1709 actually fill in the glyphs. This is used in the move_* functions
1710 in xdisp.c for text width and height computations.
1712 Callers usually don't call produce_glyphs directly;
1713 instead they use the macro PRODUCE_GLYPHS. */
1719 /* If a hook is installed, let it do the work. */
1720 xassert (it
->what
== IT_CHARACTER
1721 || it
->what
== IT_COMPOSITION
1722 || it
->what
== IT_STRETCH
);
1724 if (it
->what
== IT_STRETCH
)
1726 produce_stretch_glyph (it
);
1730 /* Nothing but characters are supported on terminal frames. For a
1731 composition sequence, it->c is the first character of the
1733 xassert (it
->what
== IT_CHARACTER
1734 || it
->what
== IT_COMPOSITION
);
1736 /* Maybe translate single-byte characters to multibyte. */
1737 it
->char_to_display
= it
->c
;
1739 if (it
->c
>= 040 && it
->c
< 0177)
1741 it
->pixel_width
= it
->nglyphs
= 1;
1745 else if (it
->c
== '\n')
1746 it
->pixel_width
= it
->nglyphs
= 0;
1747 else if (it
->c
== '\t')
1749 int absolute_x
= (it
->current_x
1750 + it
->continuation_lines_width
);
1752 = (((1 + absolute_x
+ it
->tab_width
- 1)
1757 /* If part of the TAB has been displayed on the previous line
1758 which is continued now, continuation_lines_width will have
1759 been incremented already by the part that fitted on the
1760 continued line. So, we will get the right number of spaces
1762 nspaces
= next_tab_x
- absolute_x
;
1768 it
->char_to_display
= ' ';
1769 it
->pixel_width
= it
->len
= 1;
1775 it
->pixel_width
= nspaces
;
1776 it
->nglyphs
= nspaces
;
1778 else if (CHAR_BYTE8_P (it
->c
))
1780 if (unibyte_display_via_language_environment
1783 it
->char_to_display
= unibyte_char_to_multibyte (it
->c
);
1784 it
->pixel_width
= CHAR_WIDTH (it
->char_to_display
);
1785 it
->nglyphs
= it
->pixel_width
;
1791 /* Coming here means that it->c is from display table, thus
1792 we must send the raw 8-bit byte as is to the terminal.
1793 Although there's no way to know how many columns it
1794 occupies on a screen, it is a good assumption that a
1795 single byte code has 1-column width. */
1796 it
->pixel_width
= it
->nglyphs
= 1;
1803 it
->pixel_width
= CHAR_WIDTH (it
->c
);
1804 it
->nglyphs
= it
->pixel_width
;
1811 /* Advance current_x by the pixel width as a convenience for
1813 if (it
->area
== TEXT_AREA
)
1814 it
->current_x
+= it
->pixel_width
;
1815 it
->ascent
= it
->max_ascent
= it
->phys_ascent
= it
->max_phys_ascent
= 0;
1816 it
->descent
= it
->max_descent
= it
->phys_descent
= it
->max_phys_descent
= 1;
1820 /* Produce a stretch glyph for iterator IT. IT->object is the value
1821 of the glyph property displayed. The value must be a list
1822 `(space KEYWORD VALUE ...)' with the following KEYWORD/VALUE pairs
1825 1. `:width WIDTH' specifies that the space should be WIDTH *
1826 canonical char width wide. WIDTH may be an integer or floating
1829 2. `:align-to HPOS' specifies that the space should be wide enough
1830 to reach HPOS, a value in canonical character units. */
1833 produce_stretch_glyph (it
)
1836 /* (space :width WIDTH ...) */
1837 Lisp_Object prop
, plist
;
1838 int width
= 0, align_to
= -1;
1839 int zero_width_ok_p
= 0;
1842 /* List should start with `space'. */
1843 xassert (CONSP (it
->object
) && EQ (XCAR (it
->object
), Qspace
));
1844 plist
= XCDR (it
->object
);
1846 /* Compute the width of the stretch. */
1847 if ((prop
= Fplist_get (plist
, QCwidth
), !NILP (prop
))
1848 && calc_pixel_width_or_height (&tem
, it
, prop
, 0, 1, 0))
1850 /* Absolute width `:width WIDTH' specified and valid. */
1851 zero_width_ok_p
= 1;
1852 width
= (int)(tem
+ 0.5);
1854 else if ((prop
= Fplist_get (plist
, QCalign_to
), !NILP (prop
))
1855 && calc_pixel_width_or_height (&tem
, it
, prop
, 0, 1, &align_to
))
1857 if (it
->glyph_row
== NULL
|| !it
->glyph_row
->mode_line_p
)
1858 align_to
= (align_to
< 0
1860 : align_to
- window_box_left_offset (it
->w
, TEXT_AREA
));
1861 else if (align_to
< 0)
1862 align_to
= window_box_left_offset (it
->w
, TEXT_AREA
);
1863 width
= max (0, (int)(tem
+ 0.5) + align_to
- it
->current_x
);
1864 zero_width_ok_p
= 1;
1867 /* Nothing specified -> width defaults to canonical char width. */
1868 width
= FRAME_COLUMN_WIDTH (it
->f
);
1870 if (width
<= 0 && (width
< 0 || !zero_width_ok_p
))
1873 if (width
> 0 && it
->glyph_row
)
1875 Lisp_Object o_object
= it
->object
;
1876 Lisp_Object object
= it
->stack
[it
->sp
- 1].string
;
1879 if (!STRINGP (object
))
1880 object
= it
->w
->buffer
;
1881 it
->object
= object
;
1882 it
->char_to_display
= ' ';
1883 it
->pixel_width
= it
->len
= 1;
1886 it
->object
= o_object
;
1888 it
->pixel_width
= width
;
1889 it
->nglyphs
= width
;
1893 /* Get information about special display element WHAT in an
1894 environment described by IT. WHAT is one of IT_TRUNCATION or
1895 IT_CONTINUATION. Maybe produce glyphs for WHAT if IT has a
1896 non-null glyph_row member. This function ensures that fields like
1897 face_id, c, len of IT are left untouched. */
1900 produce_special_glyphs (it
, what
)
1902 enum display_element_type what
;
1909 temp_it
.what
= IT_CHARACTER
;
1911 temp_it
.object
= make_number (0);
1912 bzero (&temp_it
.current
, sizeof temp_it
.current
);
1914 if (what
== IT_CONTINUATION
)
1916 /* Continuation glyph. */
1918 && INTEGERP (DISP_CONTINUE_GLYPH (it
->dp
))
1919 && GLYPH_CHAR_VALID_P (XINT (DISP_CONTINUE_GLYPH (it
->dp
))))
1921 glyph
= XINT (DISP_CONTINUE_GLYPH (it
->dp
));
1922 glyph
= spec_glyph_lookup_face (XWINDOW (it
->window
), glyph
);
1927 else if (what
== IT_TRUNCATION
)
1929 /* Truncation glyph. */
1931 && INTEGERP (DISP_TRUNC_GLYPH (it
->dp
))
1932 && GLYPH_CHAR_VALID_P (XINT (DISP_TRUNC_GLYPH (it
->dp
))))
1934 glyph
= XINT (DISP_TRUNC_GLYPH (it
->dp
));
1935 glyph
= spec_glyph_lookup_face (XWINDOW (it
->window
), glyph
);
1943 temp_it
.c
= FAST_GLYPH_CHAR (glyph
);
1944 temp_it
.face_id
= FAST_GLYPH_FACE (glyph
);
1945 temp_it
.len
= CHAR_BYTES (temp_it
.c
);
1947 produce_glyphs (&temp_it
);
1948 it
->pixel_width
= temp_it
.pixel_width
;
1949 it
->nglyphs
= temp_it
.pixel_width
;
1954 /***********************************************************************
1956 ***********************************************************************/
1958 /* Value is non-zero if attribute ATTR may be used. ATTR should be
1959 one of the enumerators from enum no_color_bit, or a bit set built
1960 from them. Some display attributes may not be used together with
1961 color; the termcap capability `NC' specifies which ones. */
1963 #define MAY_USE_WITH_COLORS_P(ATTR) \
1964 (TN_max_colors > 0 \
1965 ? (TN_no_color_video & (ATTR)) == 0 \
1968 /* Turn appearances of face FACE_ID on tty frame F on.
1969 FACE_ID is a realized face ID number, in the face cache. */
1972 turn_on_face (f
, face_id
)
1976 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1977 long fg
= face
->foreground
;
1978 long bg
= face
->background
;
1980 /* Do this first because TS_end_standout_mode may be the same
1981 as TS_exit_attribute_mode, which turns all appearances off. */
1982 if (MAY_USE_WITH_COLORS_P (NC_REVERSE
))
1984 if (TN_max_colors
> 0)
1986 if (fg
>= 0 && bg
>= 0)
1988 /* If the terminal supports colors, we can set them
1989 below without using reverse video. The face's fg
1990 and bg colors are set as they should appear on
1991 the screen, i.e. they take the inverse-video'ness
1992 of the face already into account. */
1994 else if (inverse_video
)
1996 if (fg
== FACE_TTY_DEFAULT_FG_COLOR
1997 || bg
== FACE_TTY_DEFAULT_BG_COLOR
)
1998 toggle_highlight ();
2002 if (fg
== FACE_TTY_DEFAULT_BG_COLOR
2003 || bg
== FACE_TTY_DEFAULT_FG_COLOR
)
2004 toggle_highlight ();
2009 /* If we can't display colors, use reverse video
2010 if the face specifies that. */
2013 if (fg
== FACE_TTY_DEFAULT_FG_COLOR
2014 || bg
== FACE_TTY_DEFAULT_BG_COLOR
)
2015 toggle_highlight ();
2019 if (fg
== FACE_TTY_DEFAULT_BG_COLOR
2020 || bg
== FACE_TTY_DEFAULT_FG_COLOR
)
2021 toggle_highlight ();
2026 if (face
->tty_bold_p
)
2028 if (MAY_USE_WITH_COLORS_P (NC_BOLD
))
2029 OUTPUT1_IF (TS_enter_bold_mode
);
2031 else if (face
->tty_dim_p
)
2032 if (MAY_USE_WITH_COLORS_P (NC_DIM
))
2033 OUTPUT1_IF (TS_enter_dim_mode
);
2035 /* Alternate charset and blinking not yet used. */
2036 if (face
->tty_alt_charset_p
2037 && MAY_USE_WITH_COLORS_P (NC_ALT_CHARSET
))
2038 OUTPUT1_IF (TS_enter_alt_charset_mode
);
2040 if (face
->tty_blinking_p
2041 && MAY_USE_WITH_COLORS_P (NC_BLINK
))
2042 OUTPUT1_IF (TS_enter_blink_mode
);
2044 if (face
->tty_underline_p
&& MAY_USE_WITH_COLORS_P (NC_UNDERLINE
))
2045 OUTPUT1_IF (TS_enter_underline_mode
);
2047 if (TN_max_colors
> 0)
2051 ts
= standout_mode
? TS_set_background
: TS_set_foreground
;
2054 p
= tparam (ts
, NULL
, 0, (int) fg
);
2059 ts
= standout_mode
? TS_set_foreground
: TS_set_background
;
2062 p
= tparam (ts
, NULL
, 0, (int) bg
);
2070 /* Turn off appearances of face FACE_ID on tty frame F. */
2073 turn_off_face (f
, face_id
)
2077 struct face
*face
= FACE_FROM_ID (f
, face_id
);
2079 xassert (face
!= NULL
);
2081 if (TS_exit_attribute_mode
)
2083 /* Capability "me" will turn off appearance modes double-bright,
2084 half-bright, reverse-video, standout, underline. It may or
2085 may not turn off alt-char-mode. */
2086 if (face
->tty_bold_p
2088 || face
->tty_reverse_p
2089 || face
->tty_alt_charset_p
2090 || face
->tty_blinking_p
2091 || face
->tty_underline_p
)
2093 OUTPUT1_IF (TS_exit_attribute_mode
);
2094 if (strcmp (TS_exit_attribute_mode
, TS_end_standout_mode
) == 0)
2098 if (face
->tty_alt_charset_p
)
2099 OUTPUT_IF (TS_exit_alt_charset_mode
);
2103 /* If we don't have "me" we can only have those appearances
2104 that have exit sequences defined. */
2105 if (face
->tty_alt_charset_p
)
2106 OUTPUT_IF (TS_exit_alt_charset_mode
);
2108 if (face
->tty_underline_p
)
2109 OUTPUT_IF (TS_exit_underline_mode
);
2112 /* Switch back to default colors. */
2113 if (TN_max_colors
> 0
2114 && ((face
->foreground
!= FACE_TTY_DEFAULT_COLOR
2115 && face
->foreground
!= FACE_TTY_DEFAULT_FG_COLOR
)
2116 || (face
->background
!= FACE_TTY_DEFAULT_COLOR
2117 && face
->background
!= FACE_TTY_DEFAULT_BG_COLOR
)))
2118 OUTPUT1_IF (TS_orig_pair
);
2122 /* Return non-zero if the terminal on frame F supports all of the
2123 capabilities in CAPS simultaneously, with foreground and background
2124 colors FG and BG. */
2127 tty_capable_p (f
, caps
, fg
, bg
)
2130 unsigned long fg
, bg
;
2132 #define TTY_CAPABLE_P_TRY(cap, TS, NC_bit) \
2133 if ((caps & (cap)) && (!(TS) || !MAY_USE_WITH_COLORS_P(NC_bit))) \
2136 TTY_CAPABLE_P_TRY (TTY_CAP_INVERSE
, TS_standout_mode
, NC_REVERSE
);
2137 TTY_CAPABLE_P_TRY (TTY_CAP_UNDERLINE
, TS_enter_underline_mode
, NC_UNDERLINE
);
2138 TTY_CAPABLE_P_TRY (TTY_CAP_BOLD
, TS_enter_bold_mode
, NC_BOLD
);
2139 TTY_CAPABLE_P_TRY (TTY_CAP_DIM
, TS_enter_dim_mode
, NC_DIM
);
2140 TTY_CAPABLE_P_TRY (TTY_CAP_BLINK
, TS_enter_blink_mode
, NC_BLINK
);
2141 TTY_CAPABLE_P_TRY (TTY_CAP_ALT_CHARSET
, TS_enter_alt_charset_mode
, NC_ALT_CHARSET
);
2148 /* Return non-zero if the terminal is capable to display colors. */
2150 DEFUN ("tty-display-color-p", Ftty_display_color_p
, Stty_display_color_p
,
2152 doc
: /* Return non-nil if TTY can display colors on DISPLAY. */)
2154 Lisp_Object display
;
2156 return TN_max_colors
> 0 ? Qt
: Qnil
;
2159 /* Return the number of supported colors. */
2160 DEFUN ("tty-display-color-cells", Ftty_display_color_cells
,
2161 Stty_display_color_cells
, 0, 1, 0,
2162 doc
: /* Return the number of colors supported by TTY on DISPLAY. */)
2164 Lisp_Object display
;
2166 return make_number (TN_max_colors
);
2171 /* Save or restore the default color-related capabilities of this
2174 tty_default_color_capabilities (save
)
2178 *default_orig_pair
, *default_set_foreground
, *default_set_background
;
2179 static int default_max_colors
, default_max_pairs
, default_no_color_video
;
2183 if (default_orig_pair
)
2184 xfree (default_orig_pair
);
2185 default_orig_pair
= TS_orig_pair
? xstrdup (TS_orig_pair
) : NULL
;
2187 if (default_set_foreground
)
2188 xfree (default_set_foreground
);
2189 default_set_foreground
= TS_set_foreground
? xstrdup (TS_set_foreground
)
2192 if (default_set_background
)
2193 xfree (default_set_background
);
2194 default_set_background
= TS_set_background
? xstrdup (TS_set_background
)
2197 default_max_colors
= TN_max_colors
;
2198 default_max_pairs
= TN_max_pairs
;
2199 default_no_color_video
= TN_no_color_video
;
2203 TS_orig_pair
= default_orig_pair
;
2204 TS_set_foreground
= default_set_foreground
;
2205 TS_set_background
= default_set_background
;
2206 TN_max_colors
= default_max_colors
;
2207 TN_max_pairs
= default_max_pairs
;
2208 TN_no_color_video
= default_no_color_video
;
2212 /* Setup one of the standard tty color schemes according to MODE.
2213 MODE's value is generally the number of colors which we want to
2214 support; zero means set up for the default capabilities, the ones
2215 we saw at term_init time; -1 means turn off color support. */
2217 tty_setup_colors (mode
)
2220 /* Canonicalize all negative values of MODE. */
2226 case -1: /* no colors at all */
2229 TN_no_color_video
= 0;
2230 TS_set_foreground
= TS_set_background
= TS_orig_pair
= NULL
;
2232 case 0: /* default colors, if any */
2234 tty_default_color_capabilities (0);
2236 case 8: /* 8 standard ANSI colors */
2237 TS_orig_pair
= "\033[0m";
2239 TS_set_foreground
= "\033[3%p1%dm";
2240 TS_set_background
= "\033[4%p1%dm";
2242 TS_set_foreground
= "\033[3%dm";
2243 TS_set_background
= "\033[4%dm";
2247 TN_no_color_video
= 0;
2253 set_tty_color_mode (f
, val
)
2257 Lisp_Object color_mode_spec
, current_mode_spec
;
2258 Lisp_Object color_mode
, current_mode
;
2260 extern Lisp_Object Qtty_color_mode
;
2261 Lisp_Object tty_color_mode_alist
;
2263 tty_color_mode_alist
= Fintern_soft (build_string ("tty-color-mode-alist"),
2270 if (NILP (tty_color_mode_alist
))
2271 color_mode_spec
= Qnil
;
2273 color_mode_spec
= Fassq (val
, XSYMBOL (tty_color_mode_alist
)->value
);
2275 if (CONSP (color_mode_spec
))
2276 color_mode
= XCDR (color_mode_spec
);
2281 current_mode_spec
= assq_no_quit (Qtty_color_mode
, f
->param_alist
);
2283 if (CONSP (current_mode_spec
))
2284 current_mode
= XCDR (current_mode_spec
);
2286 current_mode
= Qnil
;
2287 if (INTEGERP (color_mode
))
2288 mode
= XINT (color_mode
);
2290 mode
= 0; /* meaning default */
2291 if (INTEGERP (current_mode
))
2292 old_mode
= XINT (current_mode
);
2296 if (mode
!= old_mode
)
2298 tty_setup_colors (mode
);
2299 /* This recomputes all the faces given the new color
2301 call0 (intern ("tty-set-up-initial-frame-faces"));
2306 #endif /* !WINDOWSNT */
2309 /***********************************************************************
2311 ***********************************************************************/
2314 term_init (terminal_type
)
2315 char *terminal_type
;
2318 char **address
= &area
;
2319 char *buffer
= NULL
;
2320 int buffer_size
= 4096;
2323 struct frame
*sf
= XFRAME (selected_frame
);
2325 encode_terminal_src_size
= 0;
2326 encode_terminal_dst_size
= 0;
2329 initialize_w32_display ();
2333 area
= (char *) xmalloc (2044);
2335 FrameRows
= FRAME_LINES (sf
);
2336 FrameCols
= FRAME_COLS (sf
);
2337 specified_window
= FRAME_LINES (sf
);
2339 delete_in_insert_mode
= 1;
2342 scroll_region_ok
= 0;
2344 /* Seems to insert lines when it's not supposed to, messing
2345 up the display. In doing a trace, it didn't seem to be
2346 called much, so I don't think we're losing anything by
2349 line_ins_del_ok
= 0;
2350 char_ins_del_ok
= 1;
2354 FRAME_CAN_HAVE_SCROLL_BARS (sf
) = 0;
2355 FRAME_VERTICAL_SCROLL_BAR_TYPE (sf
) = vertical_scroll_bar_none
;
2356 TN_max_colors
= 16; /* Required to be non-zero for tty-display-color-p */
2359 #else /* not WINDOWSNT */
2363 buffer
= (char *) xmalloc (buffer_size
);
2364 status
= tgetent (buffer
, terminal_type
);
2368 fatal ("Cannot open terminfo database file");
2370 fatal ("Cannot open termcap database file");
2376 fatal ("Terminal type %s is not defined.\n\
2377 If that is not the actual type of terminal you have,\n\
2378 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
2379 `setenv TERM ...') to specify the correct type. It may be necessary\n\
2380 to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.",
2383 fatal ("Terminal type %s is not defined.\n\
2384 If that is not the actual type of terminal you have,\n\
2385 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
2386 `setenv TERM ...') to specify the correct type. It may be necessary\n\
2387 to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
2393 if (strlen (buffer
) >= buffer_size
)
2395 buffer_size
= strlen (buffer
);
2397 area
= (char *) xmalloc (buffer_size
);
2399 TS_ins_line
= tgetstr ("al", address
);
2400 TS_ins_multi_lines
= tgetstr ("AL", address
);
2401 TS_bell
= tgetstr ("bl", address
);
2402 BackTab
= tgetstr ("bt", address
);
2403 TS_clr_to_bottom
= tgetstr ("cd", address
);
2404 TS_clr_line
= tgetstr ("ce", address
);
2405 TS_clr_frame
= tgetstr ("cl", address
);
2406 ColPosition
= NULL
; /* tgetstr ("ch", address); */
2407 AbsPosition
= tgetstr ("cm", address
);
2408 CR
= tgetstr ("cr", address
);
2409 TS_set_scroll_region
= tgetstr ("cs", address
);
2410 TS_set_scroll_region_1
= tgetstr ("cS", address
);
2411 RowPosition
= tgetstr ("cv", address
);
2412 TS_del_char
= tgetstr ("dc", address
);
2413 TS_del_multi_chars
= tgetstr ("DC", address
);
2414 TS_del_line
= tgetstr ("dl", address
);
2415 TS_del_multi_lines
= tgetstr ("DL", address
);
2416 TS_delete_mode
= tgetstr ("dm", address
);
2417 TS_end_delete_mode
= tgetstr ("ed", address
);
2418 TS_end_insert_mode
= tgetstr ("ei", address
);
2419 Home
= tgetstr ("ho", address
);
2420 TS_ins_char
= tgetstr ("ic", address
);
2421 TS_ins_multi_chars
= tgetstr ("IC", address
);
2422 TS_insert_mode
= tgetstr ("im", address
);
2423 TS_pad_inserted_char
= tgetstr ("ip", address
);
2424 TS_end_keypad_mode
= tgetstr ("ke", address
);
2425 TS_keypad_mode
= tgetstr ("ks", address
);
2426 LastLine
= tgetstr ("ll", address
);
2427 Right
= tgetstr ("nd", address
);
2428 Down
= tgetstr ("do", address
);
2430 Down
= tgetstr ("nl", address
); /* Obsolete name for "do" */
2432 /* VMS puts a carriage return before each linefeed,
2433 so it is not safe to use linefeeds. */
2434 if (Down
&& Down
[0] == '\n' && Down
[1] == '\0')
2437 if (tgetflag ("bs"))
2438 Left
= "\b"; /* can't possibly be longer! */
2439 else /* (Actually, "bs" is obsolete...) */
2440 Left
= tgetstr ("le", address
);
2442 Left
= tgetstr ("bc", address
); /* Obsolete name for "le" */
2443 TS_pad_char
= tgetstr ("pc", address
);
2444 TS_repeat
= tgetstr ("rp", address
);
2445 TS_end_standout_mode
= tgetstr ("se", address
);
2446 TS_fwd_scroll
= tgetstr ("sf", address
);
2447 TS_standout_mode
= tgetstr ("so", address
);
2448 TS_rev_scroll
= tgetstr ("sr", address
);
2449 Wcm
.cm_tab
= tgetstr ("ta", address
);
2450 TS_end_termcap_modes
= tgetstr ("te", address
);
2451 TS_termcap_modes
= tgetstr ("ti", address
);
2452 Up
= tgetstr ("up", address
);
2453 TS_visible_bell
= tgetstr ("vb", address
);
2454 TS_cursor_normal
= tgetstr ("ve", address
);
2455 TS_cursor_visible
= tgetstr ("vs", address
);
2456 TS_cursor_invisible
= tgetstr ("vi", address
);
2457 TS_set_window
= tgetstr ("wi", address
);
2459 TS_enter_underline_mode
= tgetstr ("us", address
);
2460 TS_exit_underline_mode
= tgetstr ("ue", address
);
2461 TS_enter_bold_mode
= tgetstr ("md", address
);
2462 TS_enter_dim_mode
= tgetstr ("mh", address
);
2463 TS_enter_blink_mode
= tgetstr ("mb", address
);
2464 TS_enter_reverse_mode
= tgetstr ("mr", address
);
2465 TS_enter_alt_charset_mode
= tgetstr ("as", address
);
2466 TS_exit_alt_charset_mode
= tgetstr ("ae", address
);
2467 TS_exit_attribute_mode
= tgetstr ("me", address
);
2469 MultiUp
= tgetstr ("UP", address
);
2470 MultiDown
= tgetstr ("DO", address
);
2471 MultiLeft
= tgetstr ("LE", address
);
2472 MultiRight
= tgetstr ("RI", address
);
2474 /* SVr4/ANSI color suppert. If "op" isn't available, don't support
2475 color because we can't switch back to the default foreground and
2477 TS_orig_pair
= tgetstr ("op", address
);
2480 TS_set_foreground
= tgetstr ("AF", address
);
2481 TS_set_background
= tgetstr ("AB", address
);
2482 if (!TS_set_foreground
)
2485 TS_set_foreground
= tgetstr ("Sf", address
);
2486 TS_set_background
= tgetstr ("Sb", address
);
2489 TN_max_colors
= tgetnum ("Co");
2490 TN_max_pairs
= tgetnum ("pa");
2492 TN_no_color_video
= tgetnum ("NC");
2493 if (TN_no_color_video
== -1)
2494 TN_no_color_video
= 0;
2497 tty_default_color_capabilities (1);
2499 MagicWrap
= tgetflag ("xn");
2500 /* Since we make MagicWrap terminals look like AutoWrap, we need to have
2501 the former flag imply the latter. */
2502 AutoWrap
= MagicWrap
|| tgetflag ("am");
2503 memory_below_frame
= tgetflag ("db");
2504 TF_hazeltine
= tgetflag ("hz");
2505 must_write_spaces
= tgetflag ("in");
2506 meta_key
= tgetflag ("km") || tgetflag ("MT");
2507 TF_insmode_motion
= tgetflag ("mi");
2508 TF_standout_motion
= tgetflag ("ms");
2509 TF_underscore
= tgetflag ("ul");
2510 TF_teleray
= tgetflag ("xt");
2512 term_get_fkeys (address
);
2514 /* Get frame size from system, or else from termcap. */
2517 get_frame_size (&width
, &height
);
2518 FRAME_COLS (sf
) = width
;
2519 FRAME_LINES (sf
) = height
;
2522 if (FRAME_COLS (sf
) <= 0)
2523 SET_FRAME_COLS (sf
, tgetnum ("co"));
2525 /* Keep width and external_width consistent */
2526 SET_FRAME_COLS (sf
, FRAME_COLS (sf
));
2527 if (FRAME_LINES (sf
) <= 0)
2528 FRAME_LINES (sf
) = tgetnum ("li");
2530 if (FRAME_LINES (sf
) < 3 || FRAME_COLS (sf
) < 3)
2531 fatal ("Screen size %dx%d is too small",
2532 FRAME_LINES (sf
), FRAME_COLS (sf
));
2534 min_padding_speed
= tgetnum ("pb");
2535 TabWidth
= tgetnum ("tw");
2538 /* These capabilities commonly use ^J.
2539 I don't know why, but sending them on VMS does not work;
2540 it causes following spaces to be lost, sometimes.
2541 For now, the simplest fix is to avoid using these capabilities ever. */
2542 if (Down
&& Down
[0] == '\n')
2550 TS_fwd_scroll
= Down
;
2552 PC
= TS_pad_char
? *TS_pad_char
: 0;
2557 /* Turned off since /etc/termcap seems to have :ta= for most terminals
2558 and newer termcap doc does not seem to say there is a default.
2563 /* We don't support standout modes that use `magic cookies', so
2564 turn off any that do. */
2565 if (TS_standout_mode
&& tgetnum ("sg") >= 0)
2567 TS_standout_mode
= 0;
2568 TS_end_standout_mode
= 0;
2570 if (TS_enter_underline_mode
&& tgetnum ("ug") >= 0)
2572 TS_enter_underline_mode
= 0;
2573 TS_exit_underline_mode
= 0;
2576 /* If there's no standout mode, try to use underlining instead. */
2577 if (TS_standout_mode
== 0)
2579 TS_standout_mode
= TS_enter_underline_mode
;
2580 TS_end_standout_mode
= TS_exit_underline_mode
;
2583 /* If no `se' string, try using a `me' string instead.
2584 If that fails, we can't use standout mode at all. */
2585 if (TS_end_standout_mode
== 0)
2587 char *s
= tgetstr ("me", address
);
2589 TS_end_standout_mode
= s
;
2591 TS_standout_mode
= 0;
2597 /* We can't support standout mode, because it uses magic cookies. */
2598 TS_standout_mode
= 0;
2599 /* But that means we cannot rely on ^M to go to column zero! */
2601 /* LF can't be trusted either -- can alter hpos */
2602 /* if move at column 0 thru a line with TS_standout_mode */
2606 /* Special handling for certain terminal types known to need it */
2608 if (!strcmp (terminal_type
, "supdup"))
2610 memory_below_frame
= 1;
2611 Wcm
.cm_losewrap
= 1;
2613 if (!strncmp (terminal_type
, "c10", 3)
2614 || !strcmp (terminal_type
, "perq"))
2616 /* Supply a makeshift :wi string.
2617 This string is not valid in general since it works only
2618 for windows starting at the upper left corner;
2619 but that is all Emacs uses.
2621 This string works only if the frame is using
2622 the top of the video memory, because addressing is memory-relative.
2623 So first check the :ti string to see if that is true.
2625 It would be simpler if the :wi string could go in the termcap
2626 entry, but it can't because it is not fully valid.
2627 If it were in the termcap entry, it would confuse other programs. */
2630 p
= TS_termcap_modes
;
2631 while (*p
&& strcmp (p
, "\033v "))
2634 TS_set_window
= "\033v%C %C %C %C ";
2636 /* Termcap entry often fails to have :in: flag */
2637 must_write_spaces
= 1;
2638 /* :ti string typically fails to have \E^G! in it */
2639 /* This limits scope of insert-char to one line. */
2640 strcpy (area
, TS_termcap_modes
);
2641 strcat (area
, "\033\007!");
2642 TS_termcap_modes
= area
;
2643 area
+= strlen (area
) + 1;
2645 /* Change all %+ parameters to %C, to handle
2646 values above 96 correctly for the C100. */
2649 if (p
[0] == '%' && p
[1] == '+')
2655 FrameRows
= FRAME_LINES (sf
);
2656 FrameCols
= FRAME_COLS (sf
);
2657 specified_window
= FRAME_LINES (sf
);
2659 if (Wcm_init () == -1) /* can't do cursor motion */
2661 fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
2662 It lacks the ability to position the cursor.\n\
2663 If that is not the actual type of terminal you have, use either the\n\
2664 DCL command `SET TERMINAL/DEVICE= ...' for DEC-compatible terminals,\n\
2665 or `define EMACS_TERM \"terminal type\"' for non-DEC terminals.",
2669 fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
2670 It lacks the ability to position the cursor.\n\
2671 If that is not the actual type of terminal you have,\n\
2672 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
2673 `setenv TERM ...') to specify the correct type. It may be necessary\n\
2674 to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.",
2676 # else /* TERMCAP */
2677 fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
2678 It lacks the ability to position the cursor.\n\
2679 If that is not the actual type of terminal you have,\n\
2680 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
2681 `setenv TERM ...') to specify the correct type. It may be necessary\n\
2682 to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
2684 # endif /* TERMINFO */
2686 if (FRAME_LINES (sf
) <= 0
2687 || FRAME_COLS (sf
) <= 0)
2688 fatal ("The frame size has not been specified");
2690 delete_in_insert_mode
2691 = TS_delete_mode
&& TS_insert_mode
2692 && !strcmp (TS_delete_mode
, TS_insert_mode
);
2694 se_is_so
= (TS_standout_mode
2695 && TS_end_standout_mode
2696 && !strcmp (TS_standout_mode
, TS_end_standout_mode
));
2698 UseTabs
= tabs_safe_p () && TabWidth
== 8;
2702 && (TS_set_window
|| TS_set_scroll_region
|| TS_set_scroll_region_1
));
2704 line_ins_del_ok
= (((TS_ins_line
|| TS_ins_multi_lines
)
2705 && (TS_del_line
|| TS_del_multi_lines
))
2706 || (scroll_region_ok
&& TS_fwd_scroll
&& TS_rev_scroll
));
2708 char_ins_del_ok
= ((TS_ins_char
|| TS_insert_mode
2709 || TS_pad_inserted_char
|| TS_ins_multi_chars
)
2710 && (TS_del_char
|| TS_del_multi_chars
));
2712 fast_clear_end_of_line
= TS_clr_line
!= 0;
2715 if (read_socket_hook
) /* Baudrate is somewhat */
2716 /* meaningless in this case */
2719 FRAME_CAN_HAVE_SCROLL_BARS (sf
) = 0;
2720 FRAME_VERTICAL_SCROLL_BAR_TYPE (sf
) = vertical_scroll_bar_none
;
2721 #endif /* WINDOWSNT */
2728 fatal (str
, arg1
, arg2
)
2729 char *str
, *arg1
, *arg2
;
2731 fprintf (stderr
, "emacs: ");
2732 fprintf (stderr
, str
, arg1
, arg2
);
2733 fprintf (stderr
, "\n");
2738 DEFUN ("tty-no-underline", Ftty_no_underline
, Stty_no_underline
, 0, 0, 0,
2739 doc
: /* Declare that this terminal does not handle underlining.
2740 This is used to override the terminfo data, for certain terminals that
2741 do not really do underlining, but say that they do. */)
2744 TS_enter_underline_mode
= 0;
2751 DEFVAR_BOOL ("system-uses-terminfo", &system_uses_terminfo
,
2752 doc
: /* Non-nil means the system uses terminfo rather than termcap.
2753 This variable can be used by terminal emulator packages. */);
2755 system_uses_terminfo
= 1;
2757 system_uses_terminfo
= 0;
2760 DEFVAR_LISP ("ring-bell-function", &Vring_bell_function
,
2761 doc
: /* Non-nil means call this function to ring the bell.
2762 The function should accept no arguments. */);
2763 Vring_bell_function
= Qnil
;
2765 DEFVAR_BOOL ("visible-cursor", &visible_cursor
,
2766 doc
: /* Non-nil means to make the cursor very visible.
2767 This only has an effect when running in a text terminal.
2768 What means \"very visible\" is up to your terminal. It may make the cursor
2769 bigger, or it may make it blink, or it may do nothing at all. */);
2772 defsubr (&Stty_display_color_p
);
2773 defsubr (&Stty_display_color_cells
);
2774 defsubr (&Stty_no_underline
);
2777 /* arch-tag: 498e7449-6f2e-45e2-91dd-b7d4ca488193
2778 (do not change this comment) */