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- /* Declarations useful when processing input.
- Copyright (C) 1985, 1986, 1987, 1993 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 2, 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; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Total number of times read_char has returned. */
- extern int num_input_chars;
-
- /* Total number of times read_char has returned, outside of macros. */
- extern int num_nonmacro_input_chars;
-
- /* Nonzero means polling for input is temporarily suppressed. */
- extern int poll_suppress_count;
-
- /* Keymap mapping ASCII function key sequences onto their preferred forms.
- Initialized by the terminal-specific lisp files. */
- extern Lisp_Object Vfunction_key_map;
-
- /* Vector holding the key sequence that invoked the current command.
- It is reused for each command, and it may be longer than the current
- sequence; this_command_key_count indicates how many elements
- actually mean something. */
- extern Lisp_Object this_command_keys;
- extern int this_command_key_count;
-
- #ifdef MULTI_FRAME
- /* The frame in which the last input event occurred, or Qmacro if the
- last event came from a macro. We use this to determine when to
- generate switch-frame events. This may be cleared by functions
- like Fselect_frame, to make sure that a switch-frame event is
- generated by the next character. */
- extern Lisp_Object internal_last_event_frame;
- #endif
-
-
- /* Macros for dealing with lispy events. */
-
- /* True iff EVENT has data fields describing it (i.e. a mouse click). */
- #define EVENT_HAS_PARAMETERS(event) \
- (XTYPE (event) == Lisp_Cons)
-
- /* Extract the head from an event.
- This works on composite and simple events. */
- #define EVENT_HEAD(event) \
- (EVENT_HAS_PARAMETERS (event) ? XCONS (event)->car : (event))
-
- /* Extract the starting and ending positions from a composite event. */
- #define EVENT_START(event) (XCONS (XCONS (event)->cdr)->car)
- #define EVENT_END(event) (XCONS (XCONS (XCONS (event)->cdr)->cdr)->car)
-
- /* Extract the click count from a multi-click event. */
- #define EVENT_CLICK_COUNT(event) (Fnth ((event), make_number (2)))
-
- /* Extract the fields of a position. */
- #define POSN_WINDOW(posn) (XCONS (posn)->car)
- #define POSN_BUFFER_POSN(posn) (XCONS (XCONS (posn)->cdr)->car)
- #define POSN_WINDOW_POSN(posn) (XCONS (XCONS (XCONS (posn)->cdr)->cdr)->car)
- #define POSN_TIMESTAMP(posn) \
- (XCONS (XCONS (XCONS (XCONS (posn)->cdr)->cdr)->cdr)->car)
- #define POSN_SCROLLBAR_PART(posn) (Fnth ((posn), make_number (4)))
-
- /* Some of the event heads. */
- extern Lisp_Object Qswitch_frame;
-
- /* Properties on event heads. */
- extern Lisp_Object Qevent_kind, Qevent_symbol_elements;
-
- /* Getting an unmodified version of an event head. */
- #define EVENT_HEAD_UNMODIFIED(event_head) \
- (Fcar (Fget ((event_head), Qevent_symbol_elements)))
-
- /* The values of Qevent_kind properties. */
- extern Lisp_Object Qfunction_key, Qmouse_click, Qmouse_movement;
- extern Lisp_Object Qscroll_bar_movement;
-
- /* Getting the kind of an event head. */
- #define EVENT_HEAD_KIND(event_head) \
- (Fget ((event_head), Qevent_kind))
-
- /* Symbols to use for non-text mouse positions. */
- extern Lisp_Object Qmode_line, Qvertical_line;
-
- extern Lisp_Object get_keymap_1 ();
- extern Lisp_Object Fkeymapp ();
- extern Lisp_Object reorder_modifiers ();
- extern Lisp_Object read_char ();
- /* User-supplied string to translate input characters through. */
- extern Lisp_Object Vkeyboard_translate_table;
-
-