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284f4730 | 1 | /* Declarations useful when processing input. |
c6c5df7f | 2 | Copyright (C) 1985, 1986, 1987, 1993 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
e5d77022 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Total number of times read_char has returned. */ | |
21 | extern int num_input_chars; | |
22 | ||
0ca96cef JB |
23 | /* Total number of times read_char has returned, outside of macros. */ |
24 | extern int num_nonmacro_input_chars; | |
25 | ||
eb8c3be9 | 26 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
27 | extern int poll_suppress_count; |
28 | ||
3b0deae5 RS |
29 | /* Nonzero if polling_for_input is actually being used. */ |
30 | extern int polling_for_input; | |
31 | ||
284f4730 JB |
32 | /* Keymap mapping ASCII function key sequences onto their preferred forms. |
33 | Initialized by the terminal-specific lisp files. */ | |
34 | extern Lisp_Object Vfunction_key_map; | |
35 | ||
49fcd3de JB |
36 | /* Vector holding the key sequence that invoked the current command. |
37 | It is reused for each command, and it may be longer than the current | |
38 | sequence; this_command_key_count indicates how many elements | |
39 | actually mean something. */ | |
40 | extern Lisp_Object this_command_keys; | |
41 | extern int this_command_key_count; | |
6084b314 | 42 | |
fd2777e0 JB |
43 | #ifdef MULTI_FRAME |
44 | /* The frame in which the last input event occurred, or Qmacro if the | |
45 | last event came from a macro. We use this to determine when to | |
46 | generate switch-frame events. This may be cleared by functions | |
47 | like Fselect_frame, to make sure that a switch-frame event is | |
48 | generated by the next character. */ | |
9e6314a4 | 49 | extern Lisp_Object internal_last_event_frame; |
fd2777e0 JB |
50 | #endif |
51 | ||
284f4730 JB |
52 | \f |
53 | /* Macros for dealing with lispy events. */ | |
54 | ||
55 | /* True iff EVENT has data fields describing it (i.e. a mouse click). */ | |
4a2fb8bd | 56 | #define EVENT_HAS_PARAMETERS(event) (CONSP (event)) |
284f4730 | 57 | |
53ce28d6 JB |
58 | /* Extract the head from an event. |
59 | This works on composite and simple events. */ | |
ac501cd9 JB |
60 | #define EVENT_HEAD(event) \ |
61 | (EVENT_HAS_PARAMETERS (event) ? XCONS (event)->car : (event)) | |
62 | ||
53ce28d6 | 63 | /* Extract the starting and ending positions from a composite event. */ |
ac501cd9 JB |
64 | #define EVENT_START(event) (XCONS (XCONS (event)->cdr)->car) |
65 | #define EVENT_END(event) (XCONS (XCONS (XCONS (event)->cdr)->cdr)->car) | |
66 | ||
6765e5b0 JB |
67 | /* Extract the click count from a multi-click event. */ |
68 | #define EVENT_CLICK_COUNT(event) (Fnth ((event), make_number (2))) | |
69 | ||
53ce28d6 | 70 | /* Extract the fields of a position. */ |
ac501cd9 JB |
71 | #define POSN_WINDOW(posn) (XCONS (posn)->car) |
72 | #define POSN_BUFFER_POSN(posn) (XCONS (XCONS (posn)->cdr)->car) | |
ac501cd9 JB |
73 | #define POSN_WINDOW_POSN(posn) (XCONS (XCONS (XCONS (posn)->cdr)->cdr)->car) |
74 | #define POSN_TIMESTAMP(posn) \ | |
75 | (XCONS (XCONS (XCONS (XCONS (posn)->cdr)->cdr)->cdr)->car) | |
6765e5b0 | 76 | #define POSN_SCROLLBAR_PART(posn) (Fnth ((posn), make_number (4))) |
284f4730 JB |
77 | |
78 | /* Some of the event heads. */ | |
6084b314 | 79 | extern Lisp_Object Qswitch_frame; |
284f4730 JB |
80 | |
81 | /* Properties on event heads. */ | |
ac501cd9 | 82 | extern Lisp_Object Qevent_kind, Qevent_symbol_elements; |
284f4730 JB |
83 | |
84 | /* Getting an unmodified version of an event head. */ | |
85 | #define EVENT_HEAD_UNMODIFIED(event_head) \ | |
ac501cd9 | 86 | (Fcar (Fget ((event_head), Qevent_symbol_elements))) |
284f4730 JB |
87 | |
88 | /* The values of Qevent_kind properties. */ | |
89 | extern Lisp_Object Qfunction_key, Qmouse_click, Qmouse_movement; | |
fd2777e0 | 90 | extern Lisp_Object Qscroll_bar_movement; |
284f4730 JB |
91 | |
92 | /* Getting the kind of an event head. */ | |
93 | #define EVENT_HEAD_KIND(event_head) \ | |
94 | (Fget ((event_head), Qevent_kind)) | |
95 | ||
96 | /* Symbols to use for non-text mouse positions. */ | |
e5d77022 | 97 | extern Lisp_Object Qmode_line, Qvertical_line; |
284f4730 | 98 | |
5bb46ecf JB |
99 | extern Lisp_Object get_keymap_1 (); |
100 | extern Lisp_Object Fkeymapp (); | |
101 | extern Lisp_Object reorder_modifiers (); | |
5bb46ecf | 102 | extern Lisp_Object read_char (); |
ec558adc JB |
103 | /* User-supplied string to translate input characters through. */ |
104 | extern Lisp_Object Vkeyboard_translate_table; | |
105 | ||
71e61810 | 106 | extern Lisp_Object map_prompt (); |