src/keyboard.h

   1 /* Declarations useful when processing input.
   2    Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc.
   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
   8 the Free Software Foundation; either version 2, or (at your option)
   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
  23 /* Nonzero means polling for input is temporarily suppresed.  */
  24 extern int poll_suppress_count;
  25
  26 /* Keymap mapping ASCII function key sequences onto their preferred forms.
  27    Initialized by the terminal-specific lisp files.  */
  28 extern Lisp_Object Vfunction_key_map;
  29
  30 \f
  31 /* Macros for dealing with lispy events.  */
  32
  33 /* True iff EVENT has data fields describing it (i.e. a mouse click).  */
  34 #define EVENT_HAS_PARAMETERS(event) \
  35   (XTYPE (event) == Lisp_Cons && Flength (event) == 5)
  36
  37 /* Access the components of composite events.  */
  38 #define EVENT_HEAD(event)               (Fnth (0, (event)))
  39 #define EVENT_WINDOW(event)             (Fnth (1, (event)))
  40 #define EVENT_BUFFER_POSN(event)        (Fnth (2, (event)))
  41 #define EVENT_SCROLLBAR_BUTTON EVENT_BUFFER_POSN
  42 #define EVENT_WINDOW_POSN(event)        (Fnth (3, (event)))
  43 #define EVENT_TIMESTAMP(event)          (Fnth (4, (event)))
  44
  45 /* Some of the event heads.  */
  46 extern Lisp_Object Qvscrollbar_part, Qvslider_part;
  47 extern Lisp_Object Qvthumbup_part, Qvthumbdown_part;
  48 extern Lisp_Object Qhscrollbar_part, Qhslider_part;
  49 extern Lisp_Object Qhthumbleft_part, Qhthumbright_part;
  50
  51 /* Properties on event heads.  */
  52 extern Lisp_Object Qevent_kind, Qevent_unmodified;
  53
  54 /* Getting an unmodified version of an event head.  */
  55 #define EVENT_HEAD_UNMODIFIED(event_head) \
  56   (Fget ((event_head), Qevent_unmodified))
  57
  58 /* The values of Qevent_kind properties.  */
  59 extern Lisp_Object Qfunction_key, Qmouse_click, Qmouse_movement;
  60 extern Lisp_Object Qscrollbar_click;
  61
  62 /* Getting the kind of an event head.  */
  63 #define EVENT_HEAD_KIND(event_head) \
  64   (Fget ((event_head), Qevent_kind))
  65
  66 /* Symbols to use for non-text mouse positions.  */
  67 extern Lisp_Object Qmode_line, Qvertical_line;
  68