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/* Hooks by which low level terminal operations
can be made to call other routines.
Copyright (C) 1985, 1986 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 1, 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. */
extern int (*cursor_to_hook) ();
extern int (*raw_cursor_to_hook) ();
extern int (*clear_to_end_hook) ();
extern int (*clear_screen_hook) ();
extern int (*clear_end_of_line_hook) ();
extern int (*ins_del_lines_hook) ();
extern int (*change_line_highlight_hook) ();
extern int (*reassert_line_highlight_hook) ();
extern int (*insert_glyphs_hook) ();
extern int (*write_glyphs_hook) ();
extern int (*delete_glyphs_hook) ();
extern int (*ring_bell_hook) ();
extern int (*reset_terminal_modes_hook) ();
extern int (*set_terminal_modes_hook) ();
extern int (*update_begin_hook) ();
extern int (*update_end_hook) ();
extern int (*set_terminal_window_hook) ();
extern int (*read_socket_hook) ();
/* Hook for Emacs to call to tell the window-system-specific code to
enable/disable low-level tracking. The value of ENABLE tells the
window system event handler whether it should notice or ignore
subsequent mouse movement and mouse button releases.
If this is 0, Emacs should assume that there is no mouse (or at
least no mouse tracking) available.
If called with ENABLE non-zero, the window system event handler
should call set_pointer_loc with the new mouse co-ordinates
whenever the mouse moves, and enqueue a mouse button event for
button releases as well as button presses.
If called with ENABLE zero, the window system event handler should
ignore mouse movement events, and not enqueue events for mouse
button releases. */
extern int (*mouse_tracking_enable_hook) ( /* int ENABLE */ );
/* When a screen's focus redirection is changed, this hook tells the
window system code to re-decide where to put the highlight. Under
X, this means that the system lies about where the focus is. */
extern void (*screen_rehighlight_hook) ( /* void */ );
/* If nonzero, send all terminal output characters to this stream also. */
extern FILE *termscript;
#ifdef XINT
/* Expedient hack: only provide the below definitions to files that
are prepared to handle lispy things. XINT is defined iff lisp.h
has been included in the file before this file. */
/* The keyboard input buffer is an array of these structures. Each one
represents some sort of input event - a keystroke, a mouse click, or
a window system event. These get turned into their lispy forms when
they are removed from the event queue. */
struct input_event {
/* What kind of event was this? */
enum {
no_event, /* nothing happened. This should never
actually appear in the event queue. */
ascii_keystroke, /* The ASCII code is in .code.
.screen is the screen in which the key
was typed.
Note that this includes meta-keys, and
the modifiers field of the event
is unused. */
non_ascii_keystroke, /* .code is a number identifying the
function key. A code N represents
a key whose name is
function_key_names[N]; function_key_names
is a table in keyboard.c to which you
should feel free to add missing keys.
.modifiers holds the state of the
modifier keys.
.screen is the screen in which the key
was typed. */
mouse_click, /* The button number is in .code.
.modifiers holds the state of the
modifier keys.
.x and .y give the mouse position,
in pixels, within the window.
.screen gives the screen the mouse
click occurred in.
.timestamp gives a timestamp (in
milliseconds) for the click. */
scrollbar_click, /* .code gives the number of the mouse
button that was clicked.
.part is a lisp symbol indicating which
part of the scrollbar got clicked. This
indicates whether the scroll bar was
horizontal or vertical.
.modifiers gives the state of the
modifier keys.
.x gives the distance from the start
of the scroll bar of the click; .y gives
the total length of the scroll bar.
.screen gives the screen the click
should apply to.
.timestamp gives a timestamp (in
milliseconds) for the click. */
#if 0
screen_selected, /* The user has moved the focus to another
screen.
.screen is the screen that should become
selected at the next convenient time. */
#endif
} kind;
Lisp_Object code;
Lisp_Object part;
struct screen *screen;
int modifiers; /* See enum below for interpretation. */
Lisp_Object x, y;
Lisp_Object timestamp;
};
/* Bits in the modifiers member of the input_event structure. */
enum {
shift_modifier = 1,
ctrl_modifier = 2,
meta_modifier = 4,
up_modifier = 8, /* This only applies to mouse buttons. */
last_modifier /* This should always be one more than the
highest modifier bit defined. */
};
#define NUM_MODIFIER_COMBOS ((last_modifier-1) << 1)
#endif
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