/* Keyboard and mouse input; editor command loop.
- Copyright (C) 1985, 1986, 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1987, 1988, 1989, 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 1, or (at your option)
+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,
#include "disptab.h"
#include "dispextern.h"
#include "keyboard.h"
+#include "intervals.h"
+#include "blockinput.h"
#include <setjmp.h>
#include <errno.h>
extern int errno;
+/* Variables for blockinput.h: */
+
+/* Non-zero if interrupt input is blocked right now. */
+int interrupt_input_blocked;
+
+/* Nonzero means an input interrupt has arrived
+ during the current critical section. */
+int interrupt_input_pending;
+
+
#ifdef HAVE_X_WINDOWS
extern Lisp_Object Vmouse_grabbed;
/* Last input character read for any purpose. */
Lisp_Object last_input_char;
-/* If not Qnil, an object to be read as the next command input. */
-Lisp_Object unread_command_char;
+/* If not Qnil, a list of objects to be read as subsequent command input. */
+Lisp_Object unread_command_events;
+
+/* If not -1, an event to be read as subsequent command input. */
+int unread_command_char;
/* If not Qnil, this is a switch-frame event which we decided to put
off until the end of a key sequence. This should be read as the
- next command input, after any unread_command_char. Only
- read_key_sequence sets this; it uses it to delay switch-frame
- events until the end of the key sequence. */
-static Lisp_Object unread_switch_frame;
+ next command input, after any unread_command_events.
+
+ read_key_sequence uses this to delay switch-frame events until the
+ end of the key sequence; Fread_char uses it to put off switch-frame
+ events until a non-ASCII event is acceptable as input. */
+Lisp_Object unread_switch_frame;
+
+/* A mask of extra modifier bits to put into every keyboard char. */
+int extra_keyboard_modifiers;
/* Char to use as prefix when a meta character is typed in.
This is bound on entry to minibuffer in case ESC is changed there. */
instead of the actual command. */
Lisp_Object this_command;
+#ifdef MULTI_FRAME
/* The frame in which the last input event occurred, or Qmacro if the
- last event came from a macro.
- command_loop_1 will select this frame before running the
- command bound to an event sequence, and read_key_sequence will
- toss the existing prefix if the user starts typing at a
- new frame.
-
- On a non-multi-frame Emacs, this will be either Qmacro or
- selected_frame. */
+ 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. */
+Lisp_Object internal_last_event_frame;
+
+/* A user-visible version of the above, intended to allow users to
+ figure out where the last event came from, if the event doesn't
+ carry that information itself (i.e. if it was a character). */
Lisp_Object Vlast_event_frame;
+#endif
/* The timestamp of the last input event we received from the X server.
X Windows wants this for selection ownership. */
/* Keymap mapping ASCII function key sequences onto their preferred forms. */
extern Lisp_Object Vfunction_key_map;
+/* Non-nil means deactivate the mark at end of this command. */
+Lisp_Object Vdeactivate_mark;
+
+/* Menu bar specified in Lucid Emacs fashion. */
+
+Lisp_Object Vlucid_menu_bar_dirty_flag;
+Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook;
+
+/* Hooks to run before and after each command. */
+Lisp_Object Qpre_command_hook, Qpost_command_hook;
+Lisp_Object Vpre_command_hook, Vpost_command_hook;
+
/* File in which we write all commands we read. */
FILE *dribble;
/* Nonzero if input is available. */
int input_pending;
-/* Nonzero if should obey 0200 bit in input chars as "Meta". */
+/* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
+ keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
+
int meta_key;
extern char *pending_malloc_warning;
/* Circular buffer for pre-read keyboard input. */
static struct input_event kbd_buffer[KBD_BUFFER_SIZE];
+/* Vector to GCPRO the frames and windows mentioned in kbd_buffer.
+
+ The interrupt-level event handlers will never enqueue an event on a
+ frame which is not in Vframe_list, and once an event is dequeued,
+ internal_last_event_frame or the event itself points to the frame.
+ So that's all fine.
+
+ But while the event is sitting in the queue, it's completely
+ unprotected. Suppose the user types one command which will run for
+ a while and then delete a frame, and then types another event at
+ the frame that will be deleted, before the command gets around to
+ it. Suppose there are no references to this frame elsewhere in
+ Emacs, and a GC occurs before the second event is dequeued. Now we
+ have an event referring to a freed frame, which will crash Emacs
+ when it is dequeued.
+
+ Similar things happen when an event on a scroll bar is enqueued; the
+ window may be deleted while the event is in the queue.
+
+ So, we use this vector to protect the frame_or_window field in the
+ event queue. That way, they'll be dequeued as dead frames or
+ windows, but still valid lisp objects.
+
+ If kbd_buffer[i].kind != no_event, then
+ (XVECTOR (kbd_buffer_frame_or_window)->contents[i]
+ == kbd_buffer[i].frame_or_window. */
+static Lisp_Object kbd_buffer_frame_or_window;
+
/* Pointer to next available character in kbd_buffer.
If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the
/* Pointer to next place to store character in kbd_buffer. This
may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
character should go in kbd_buffer[0]. */
+#ifdef __STDC__
+volatile
+#endif
static struct input_event *kbd_store_ptr;
/* The above pair of variables forms a "queue empty" flag. When we
enqueue a non-hook event, we increment kbd_write_count. When we
dequeue a non-hook event, we increment kbd_read_count. We say that
- there is input available iff the two counters are equal.
+ there is input available iff the two counters are not equal.
Why not just have a flag set and cleared by the enqueuing and
dequeuing functions? Such a flag could be screwed up by interrupts
at inopportune times. */
-/* If this flag is non-zero, mouse movement events will appear in the
- input stream. If is zero, mouse movement will be ignored. */
-int do_mouse_tracking;
+/* If this flag is non-zero, we check mouse_moved to see when the
+ mouse moves, and motion events will appear in the input stream. If
+ it is zero, mouse motion is ignored. */
+static int do_mouse_tracking;
/* The window system handling code should set this if the mouse has
moved since the last call to the mouse_position_hook. Calling that
/* Symbols to head events. */
Lisp_Object Qmouse_movement;
-
-Lisp_Object Qvscrollbar_part;
-Lisp_Object Qvslider_part;
-Lisp_Object Qvthumbup_part;
-Lisp_Object Qvthumbdown_part;
-
-Lisp_Object Qhscrollbar_part;
-Lisp_Object Qhslider_part;
-Lisp_Object Qhthumbleft_part;
-Lisp_Object Qhthumbright_part;
-
+Lisp_Object Qscroll_bar_movement;
Lisp_Object Qswitch_frame;
/* Symbols to denote kinds of events. */
Lisp_Object Qfunction_key;
Lisp_Object Qmouse_click;
/* Lisp_Object Qmouse_movement; - also an event header */
-Lisp_Object Qscrollbar_click;
/* Properties of event headers. */
Lisp_Object Qevent_kind;
Lisp_Object Qevent_symbol_elements;
+Lisp_Object Qmenu_enable;
+
/* An event header symbol HEAD may have a property named
Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
BASE is the base, unmodified version of HEAD, and MODIFIERS is the
apply_modifiers. */
Lisp_Object Qmodifier_cache;
-/* Symbols to use for non-text mouse positions. */
+/* Symbols to use for parts of windows. */
Lisp_Object Qmode_line;
Lisp_Object Qvertical_line;
+Lisp_Object Qvertical_scroll_bar;
+Lisp_Object Qmenu_bar;
+
+extern Lisp_Object Qmenu_enable;
Lisp_Object recursive_edit_unwind (), command_loop ();
Lisp_Object Fthis_command_keys ();
if (ptr - echobuf > sizeof echobuf - 6)
return;
- ptr = push_key_description (c, ptr);
+ ptr = push_key_description (XINT (c), ptr);
}
else if (XTYPE (c) == Lisp_Symbol)
{
{
if (!immediate_echo && echoptr == echobuf)
return;
+ /* Do nothing if not echoing at all. */
+ if (echoptr == 0)
+ return;
/* Put a dash at the end of the buffer temporarily,
but make it go away when the next character is added. */
bcopy (XVECTOR (this_command_keys)->contents,
XVECTOR (new_keys)->contents,
- size);
+ size * sizeof (Lisp_Object));
this_command_keys = new_keys;
}
if (EQ (val, Qt))
Fsignal (Qquit, Qnil);
- unbind_to (count);
- return Qnil;
+ return unbind_to (count, Qnil);
}
/* When an auto-save happens, record the "time", and don't do again soon. */
Lisp_Object
command_loop_1 ()
{
- Lisp_Object cmd;
+ Lisp_Object cmd, tem;
int lose;
int nonundocount;
Lisp_Object keybuf[30];
int i;
int no_redisplay;
int no_direct;
+ int prev_modiff;
+ struct buffer *prev_buffer;
Vprefix_arg = Qnil;
+ Vdeactivate_mark = Qnil;
waiting_for_input = 0;
cancel_echoing ();
no_direct = 0;
+ Vdeactivate_mark = Qnil;
+
/* If minibuffer on and echo area in use,
wait 2 sec and redraw minibufer. */
int count = specpdl_ptr - specpdl;
specbind (Qinhibit_quit, Qt);
Fsit_for (make_number (2), Qnil, Qnil);
- unbind_to (count);
+ unbind_to (count, Qnil);
echo_area_glyphs = 0;
no_direct = 1;
if (!NILP (Vquit_flag))
{
Vquit_flag = Qnil;
- unread_command_char = make_number (quit_char);
+ unread_command_events = Fcons (make_number (quit_char), Qnil);
}
}
/* Since we can free the most stuff here. */
#endif /* C_ALLOCA */
+#if 0
+#ifdef MULTI_FRAME
+ /* Select the frame that the last event came from. Usually,
+ switch-frame events will take care of this, but if some lisp
+ code swallows a switch-frame event, we'll fix things up here.
+ Is this a good idea? */
+ if (XTYPE (internal_last_event_frame) == Lisp_Frame
+ && XFRAME (internal_last_event_frame) != selected_frame)
+ Fselect_frame (internal_last_event_frame, Qnil);
+#endif
+#endif
+ /* If it has changed current-menubar from previous value,
+ really recompute the menubar from the value. */
+ if (! NILP (Vlucid_menu_bar_dirty_flag))
+ call0 (Qrecompute_lucid_menubar);
+
+#if 0 /* This is done in xdisp.c now. */
+#ifdef MULTI_FRAME
+ for (tem = Vframe_list; CONSP (tem); tem = XCONS (tem)->cdr)
+ {
+ struct frame *f = XFRAME (XCONS (tem)->car);
+ struct window *w = XWINDOW (FRAME_SELECTED_WINDOW (f));
+
+ /* If the user has switched buffers or windows, we need to
+ recompute to reflect the new bindings. But we'll
+ recompute when update_mode_lines is set too; that means
+ that people can use force-mode-line-update to request
+ that the menu bar be recomputed. The adverse effect on
+ the rest of the redisplay algorithm is about the same as
+ windows_or_buffers_changed anyway. */
+ if (windows_or_buffers_changed
+ || update_mode_lines
+ || (XFASTINT (w->last_modified) < MODIFF
+ && (XFASTINT (w->last_modified)
+ <= XBUFFER (w->buffer)->save_modified)))
+ {
+ struct buffer *prev = current_buffer;
+ current_buffer = XBUFFER (w->buffer);
+ FRAME_MENU_BAR_ITEMS (f) = menu_bar_items ();
+ current_buffer = prev;
+ }
+ }
+#endif /* MULTI_FRAME */
+#endif /* 0 */
+
/* Read next key sequence; i gets its length. */
i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), 0);
++num_input_keys;
-#if 0 /* This shouldn't be necessary, now that we have switch-frame events. */
-#ifdef MULTI_FRAME
- /* Select the frame that the key sequence came from. */
- if (XTYPE (Vlast_event_frame) == Lisp_Frame
- && XFRAME (Vlast_event_frame) != selected_frame)
- Fselect_frame (Vlast_event_frame, Qnil);
-#endif
-#endif
-
/* Now we have read a key sequence of length I,
or else I is 0 and we found end of file. */
last_command_char = keybuf[i - 1];
+ /* If the previous command tried to force a specific window-start,
+ forget about that, in case this command moves point far away
+ from that position. */
+ XWINDOW (selected_window)->force_start = Qnil;
+
cmd = read_key_sequence_cmd;
if (!NILP (Vexecuting_macro))
{
cases identified below that set no_redisplay to 1. */
no_redisplay = 0;
+ prev_buffer = current_buffer;
+ prev_modiff = MODIFF;
+
/* Execute the command. */
+ this_command = cmd;
+ if (!NILP (Vpre_command_hook))
+ call1 (Vrun_hooks, Qpre_command_hook);
+
if (NILP (cmd))
{
/* nil means key is undefined. */
defining_kbd_macro = 0;
update_mode_lines = 1;
Vprefix_arg = Qnil;
+
}
else
{
- this_command = cmd;
if (NILP (Vprefix_arg) && ! no_direct)
{
/* Recognize some common commands in common situations and
= window_display_table (XWINDOW (selected_window));
lose = FETCH_CHAR (point);
SET_PT (point + 1);
- if (((dp == 0 && lose >= 040 && lose < 0177)
- ||
- (dp && (XTYPE (dp->contents[lose]) != Lisp_String
- || XSTRING (dp->contents[lose])->size == sizeof (GLYPH))))
+ if ((dp
+ ? (XTYPE (DISP_CHAR_VECTOR (dp, lose)) != Lisp_Vector
+ && XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1)
+ : (lose >= 0x20 && lose < 0x7f))
&& (XFASTINT (XWINDOW (selected_window)->last_modified)
>= MODIFF)
&& (XFASTINT (XWINDOW (selected_window)->last_point)
= window_display_table (XWINDOW (selected_window));
SET_PT (point - 1);
lose = FETCH_CHAR (point);
- if (((dp == 0 && lose >= 040 && lose < 0177)
- ||
- (dp && (XTYPE (dp->contents[lose]) != Lisp_String
- || XSTRING (dp->contents[lose])->size == sizeof (GLYPH))))
+ if ((dp
+ ? (XTYPE (DISP_CHAR_VECTOR (dp, lose)) != Lisp_Vector
+ && XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1)
+ : (lose >= 0x20 && lose < 0x7f))
&& (XFASTINT (XWINDOW (selected_window)->last_modified)
>= MODIFF)
&& (XFASTINT (XWINDOW (selected_window)->last_point)
|| !EQ (current_buffer->selective_display, Qnil)
|| detect_input_pending ()
|| !NILP (Vexecuting_macro);
- if (internal_self_insert (c, 0))
+ if (internal_self_insert (XINT (c), 0))
{
lose = 1;
nonundocount = 0;
{
struct Lisp_Vector *dp
= window_display_table (XWINDOW (selected_window));
+ int lose = XINT (c);
- if (dp == 0 || XTYPE (dp->contents[c]) != Lisp_String)
- no_redisplay = direct_output_for_insert (c);
- else if (XSTRING (dp->contents[c])->size
- == sizeof (GLYPH))
- no_redisplay =
- direct_output_for_insert (*(GLYPH *)XSTRING (dp->contents[c])->data);
+ if (dp)
+ {
+ Lisp_Object obj = DISP_CHAR_VECTOR (dp, lose);
+
+ if (XTYPE (obj) == Lisp_Vector
+ && XVECTOR (obj)->size == 1
+ && (XTYPE (obj = XVECTOR (obj)->contents[0])
+ == Lisp_Int))
+ no_redisplay =
+ direct_output_for_insert (XINT (obj));
+ }
+ else
+ {
+ if (lose >= 0x20 && lose <= 0x7e)
+ no_redisplay = direct_output_for_insert (lose);
+ }
}
goto directly_done;
}
}
directly_done: ;
+ if (!NILP (Vpost_command_hook))
+ call1 (Vrun_hooks, Qpost_command_hook);
+
/* If there is a prefix argument,
1) We don't want last_command to be ``universal-argument''
(that would be dumb), so don't set last_command,
cancel_echoing ();
this_command_key_count = 0;
}
+
+ if (!NILP (current_buffer->mark_active))
+ {
+ if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode))
+ {
+ current_buffer->mark_active = Qnil;
+ call1 (Vrun_hooks, intern ("deactivate-mark-hook"));
+ }
+ else if (current_buffer != prev_buffer || MODIFF != prev_modiff)
+ call1 (Vrun_hooks, intern ("activate-mark-hook"));
+ }
}
}
\f
SIGTYPE
input_poll_signal ()
{
-#ifdef HAVE_X_WINDOWS
- extern int x_input_blocked;
- if (x_input_blocked == 0)
-#endif
- if (!waiting_for_input)
- read_avail_input (0);
+ if (interrupt_input_blocked == 0
+ && !waiting_for_input)
+ read_avail_input (0);
signal (SIGALRM, input_poll_signal);
alarm (polling_period);
}
int count;
jmp_buf save_jump;
- if (!NILP (unread_command_char))
+ if (CONSP (unread_command_events))
+ {
+ c = XCONS (unread_command_events)->car;
+ unread_command_events = XCONS (unread_command_events)->cdr;
+
+ if (this_command_key_count == 0)
+ goto reread_first;
+ else
+ goto reread;
+ }
+
+ if (unread_command_char != -1)
{
- c = unread_command_char;
- unread_command_char = Qnil;
+ XSET (c, Lisp_Int, unread_command_char);
+ unread_command_char = -1;
if (this_command_key_count == 0)
goto reread_first;
if (!NILP (Vexecuting_macro))
{
+#ifdef MULTI_FRAME
/* We set this to Qmacro; since that's not a frame, nobody will
try to switch frames on us, and the selected window will
remain unchanged.
Since this event came from a macro, it would be misleading to
- leave Vlast_event_frame set to whereever the last real event
- came from. Normally, command_loop_1 selects
- Vlast_event_frame after each command is read, but events read
- from a macro should never cause a new frame to be selected. */
- Vlast_event_frame = Qmacro;
+ leave internal_last_event_frame set to whereever the last
+ real event came from. Normally, a switch-frame event selects
+ internal_last_event_frame after each command is read, but
+ events read from a macro should never cause a new frame to be
+ selected. */
+ Vlast_event_frame = internal_last_event_frame = Qmacro;
+#endif
- if (executing_macro_index >= XFASTINT (Flength (Vexecuting_macro)))
+ /* Exit the macro if we are at the end.
+ Also, some things replace the macro with t
+ to force an early exit. */
+ if (EQ (Vexecuting_macro, Qt)
+ || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro)))
{
XSET (c, Lisp_Int, -1);
return c;
}
c = Faref (Vexecuting_macro, make_number (executing_macro_index));
+ if (XTYPE (Vexecuting_macro) == Lisp_String
+ && (XINT (c) & 0x80))
+ XFASTINT (c) = CHAR_META | (XINT (c) & ~0x80);
+
executing_macro_index++;
goto from_macro;
if (_setjmp (getcjmp))
{
XSET (c, Lisp_Int, quit_char);
- XSET (Vlast_event_frame, Lisp_Frame, selected_frame);
+#ifdef MULTI_FRAME
+ XSET (internal_last_event_frame, Lisp_Frame, selected_frame);
+ Vlast_event_frame = internal_last_event_frame;
+#endif
+ /* If we report the quit char as an event,
+ don't do so more than once. */
+ if (!NILP (Vinhibit_quit))
+ Vquit_flag = Qnil;
goto non_reread;
}
/* After a mouse event, start echoing right away.
This is because we are probably about to display a menu,
and we don't want to delay before doing so. */
- if (XTYPE (prev_event) == Lisp_Cons)
+ if (EVENT_HAS_PARAMETERS (prev_event))
echo ();
else
{
if (noninteractive && XTYPE (c) == Lisp_Int && XINT (c) < 0)
Fkill_emacs (make_number (1));
+ if (XTYPE (c) == Lisp_Int)
+ {
+ /* Add in any extra modifiers, where appropriate. */
+ if ((extra_keyboard_modifiers & CHAR_CTL)
+ || ((extra_keyboard_modifiers & 0177) < ' '
+ && (extra_keyboard_modifiers & 0177) != 0))
+ {
+ /* If it's already a control character, don't mess with it. */
+ if ((c & 0177) == 0)
+ ;
+
+ /* Making ? a control character should result in DEL. */
+ else if ((c & 0177) == '?')
+ c |= 0177;
+
+ /* ASCII control chars are made from letters (both cases),
+ as well as the non-letters within 0100...0137. */
+ else if ((c & 0137) >= 0101 && (c & 0137) <= 0132)
+ c = (c & (037 | ~0177));
+ else if ((c & 0177) >= 0100 && (c & 0177) <= 0137)
+ c = (c & (037 | ~0177));
+
+ /* Anything else must get its high control bit set. */
+ else
+ c = c | ctrl_modifier;
+ }
+
+ /* Transfer any other modifier bits directly from
+ extra_keyboard_modifiers to c. Ignore the actual character code
+ in the low 16 bits of extra_keyboard_modifiers. */
+ c |= (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL);
+ }
+
non_reread:
restore_getcjmp (save_jump);
if (XTYPE (c) == Lisp_Int)
{
/* If kbd_buffer_get_event gave us an EOF, return that. */
- if (XINT (c) < 0)
+ if (XINT (c) == -1)
return c;
- /* Strip the high bits, and maybe the meta bit too. */
- XSETINT (c, XINT (c) & (meta_key ? 0377 : 0177));
-
if (XTYPE (Vkeyboard_translate_table) == Lisp_String
&& XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c))
XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]);
/* If it's a structured event, take the event header. */
dribblee = EVENT_HEAD (dribblee);
- if (XTYPE (c) == Lisp_Symbol)
+ if (XTYPE (dribblee) == Lisp_Symbol)
{
putc ('<', dribble);
- fwrite (XSYMBOL (c)->name->data, sizeof (char),
- XSYMBOL (c)->name->size,
+ fwrite (XSYMBOL (dribblee)->name->data, sizeof (char),
+ XSYMBOL (dribblee)->name->size,
dribble);
putc ('>', dribble);
}
from_macro:
reread_first:
- echo_char (c);
- /* Record this character as part of the current key. */
- add_command_key (c);
+ /* Record this character as part of the current key.
+ Don't record mouse motion; it should never matter. */
+ if (! (EVENT_HAS_PARAMETERS (c)
+ && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement)))
+ {
+ echo_char (c);
+ add_command_key (c);
+ }
/* Re-reading in the middle of a command */
reread:
}
DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0,
- "Evaluate BODY with mouse movement and button release events enabled.\n\
-Within a `track-mouse', mouse motion and button releases generate input\n\
-events that you can read with `read-event'.\n\
-Normally, these occurrences don't generate events.")
+ "Evaluate BODY with mouse movement events enabled.\n\
+Within a `track-mouse' form, mouse motion generates input events that\n\
+you can read with `read-event'.\n\
+Normally, mouse motion is ignored.")
(args)
Lisp_Object args;
{
{
register int c = XFASTINT (event->code) & 0377;
- if (c == quit_char
- || ((c == (0200 | quit_char)) && !meta_key))
+ if (c == quit_char)
{
extern SIGTYPE interrupt_signal ();
+#ifdef MULTI_FRAME
/* If this results in a quit_char being returned to Emacs as
- input, set last-event-frame properly. If this doesn't
+ input, set Vlast_event_frame properly. If this doesn't
get returned to Emacs as an event, the next event read
will set Vlast_event_frame again, so this is safe to do. */
- Vlast_event_frame = FRAME_FOCUS_FRAME (event->frame);
+ {
+ Lisp_Object focus =
+ FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window));
+
+ if (NILP (focus))
+ internal_last_event_frame = event->frame_or_window;
+ else
+ internal_last_event_frame = focus;
+ Vlast_event_frame = internal_last_event_frame;
+ }
+#endif
last_event_timestamp = event->timestamp;
interrupt_signal ();
kbd_store_ptr->kind = event->kind;
kbd_store_ptr->code = event->code;
kbd_store_ptr->part = event->part;
- kbd_store_ptr->frame = event->frame;
+ kbd_store_ptr->frame_or_window = event->frame_or_window;
kbd_store_ptr->modifiers = event->modifiers;
kbd_store_ptr->x = event->x;
kbd_store_ptr->y = event->y;
kbd_store_ptr->timestamp = event->timestamp;
+ (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr
+ - kbd_buffer]
+ = event->frame_or_window);
kbd_store_ptr++;
}
return obj;
}
+ retry:
/* Wait until there is input available. */
for (;;)
{
if (kbd_fetch_ptr != kbd_store_ptr)
{
struct input_event *event;
- Lisp_Object frame;
event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE)
? kbd_fetch_ptr
: kbd_buffer);
last_event_timestamp = event->timestamp;
- XSET (frame, Lisp_Frame, XFRAME (FRAME_FOCUS_FRAME (event->frame)));
+ obj = Qnil;
+
+ /* These two kinds of events get special handling
+ and don't actually appear to the command loop. */
+ if (event->kind == selection_request_event)
+ {
+#ifdef HAVE_X11
+ x_handle_selection_request (event);
+ kbd_fetch_ptr = event + 1;
+ goto retry;
+#else
+ /* We're getting selection request events, but we don't have
+ a window system. */
+ abort ();
+#endif
+ }
+
+ if (event->kind == selection_clear_event)
+ {
+#ifdef HAVE_X11
+ x_handle_selection_clear (event);
+ kbd_fetch_ptr = event + 1;
+ goto retry;
+#else
+ /* We're getting selection request events, but we don't have
+ a window system. */
+ abort ();
+#endif
+ }
+
+#ifdef MULTI_FRAME
/* If this event is on a different frame, return a switch-frame this
time, and leave the event in the queue for next time. */
- if (! EQ (frame, Vlast_event_frame))
- {
- Vlast_event_frame = frame;
+ {
+ Lisp_Object frame = event->frame_or_window;
+ Lisp_Object focus;
+
+ if (XTYPE (frame) == Lisp_Window)
+ frame = WINDOW_FRAME (XWINDOW (frame));
+
+ focus = FRAME_FOCUS_FRAME (XFRAME (frame));
+ if (! NILP (focus))
+ frame = focus;
+
+ if (! EQ (frame, internal_last_event_frame)
+ && XFRAME (frame) != selected_frame)
obj = make_lispy_switch_frame (frame);
- }
- else
+ internal_last_event_frame = frame;
+ }
+#endif
+
+ /* If we didn't decide to make a switch-frame event, go ahead
+ and build a real event from the queue entry. */
+ if (NILP (obj))
{
obj = make_lispy_event (event);
- if (XTYPE (obj) == Lisp_Int)
- XSET (obj, Lisp_Int, XINT (obj) & (meta_key ? 0377 : 0177));
/* Wipe out this event, to catch bugs. */
event->kind = no_event;
+ (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer]
+ = Qnil);
kbd_fetch_ptr = event + 1;
}
}
else if (do_mouse_tracking && mouse_moved)
{
- FRAME_PTR frame;
+ FRAME_PTR f;
+ Lisp_Object bar_window;
+ enum scroll_bar_part part;
Lisp_Object x, y;
unsigned long time;
- (*mouse_position_hook) (&frame, &x, &y, &time);
+ (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time);
+
+ obj = Qnil;
- /* Decide if we should generate a switch-frame event. Don't generate
- switch-frame events for motion outside of all Emacs frames. */
- if (frame && frame != XFRAME (Vlast_event_frame))
+#ifdef MULTI_FRAME
+ /* Decide if we should generate a switch-frame event. Don't
+ generate switch-frame events for motion outside of all Emacs
+ frames. */
+ if (f)
{
- XSET (Vlast_event_frame, Lisp_Frame, frame);
- obj = make_lispy_switch_frame (Vlast_event_frame);
+ Lisp_Object frame = FRAME_FOCUS_FRAME (f);
+
+ if (NILP (frame))
+ XSET (frame, Lisp_Frame, f);
+
+ if (! EQ (frame, internal_last_event_frame)
+ && XFRAME (frame) != selected_frame)
+ obj = make_lispy_switch_frame (internal_last_event_frame);
+ internal_last_event_frame = frame;
}
- else
- obj = make_lispy_movement (frame, x, y, time);
- }
+#endif
+
+ /* If we didn't decide to make a switch-frame event, go ahead and
+ return a mouse-motion event. */
+ if (NILP (obj))
+ obj = make_lispy_movement (f, bar_window, part, x, y, time);
+ }
else
/* We were promised by the above while loop that there was
something for us to read! */
abort ();
+ /* If something gave back nil as the Lispy event,
+ it means the event was discarded, so try again. */
+ if (NILP (obj))
+ goto retry;
+
input_pending = readable_events ();
+#ifdef MULTI_FRAME
+ Vlast_event_frame = internal_last_event_frame;
+#endif
+
return (obj);
}
+
/* Caches for modify_event_symbol. */
static Lisp_Object func_key_syms;
static Lisp_Object mouse_syms;
{
/* X Keysym value */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */
+ "backspace",
+ "tab",
+ "linefeed",
+ "clear",
+ 0,
+ "return",
+ 0, 0,
+ 0, 0, 0, /* 0xff10 */
+ "pause",
+ 0, 0, 0, 0, 0, 0, 0,
+ "escape",
+ 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
+
"home", /* 0xff50 */ /* IsCursorKey */
"left",
"up",
0, 0,
"kp-equal", /* 0xffbd */
"f1", /* 0xffbe */ /* IsFunctionKey */
- "f2", "f3", "f4",
- "f5", "f6", "f7", "f8", "f9", "f10", "f11", "f12",
- "f13", "f14", "f15", "f16", "f17", "f18", "f19", "f20",
- "f21", "f22", "f23", "f24", "f25", "f26", "f27", "f28",
- "f29", "f30", "f31", "f32", "f33", "f34", "f35" /* 0xffe0 */
+ "f2",
+ "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
+ "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
+ "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
+ "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
+ "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
+ 0, 0, 0, 0, 0, 0, 0, "delete"
};
static char *lispy_mouse_names[] =
"mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
};
-/* make_lispy_event stores the down-going location of the currently
- depressed buttons in button_down_locations. */
-struct mouse_position {
- Lisp_Object window;
- Lisp_Object buffer_pos;
- Lisp_Object x, y;
- Lisp_Object timestamp;
+/* Scroll bar parts. */
+Lisp_Object Qabove_handle, Qhandle, Qbelow_handle;
+
+/* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
+Lisp_Object *scroll_bar_parts[] = {
+ &Qabove_handle, &Qhandle, &Qbelow_handle
};
-static struct mouse_position button_down_location[NUM_MOUSE_BUTTONS];
+
+
+/* A vector, indexed by button number, giving the down-going location
+ of currently depressed buttons, both scroll bar and non-scroll bar.
+
+ The elements have the form
+ (BUTTON-NUMBER MODIFIER-MASK . REST)
+ where REST is the cdr of a position as it would be reported in the event.
+
+ The make_lispy_event function stores positions here to tell the
+ difference between click and drag events, and to store the starting
+ location to be included in drag events. */
+
+static Lisp_Object button_down_location;
/* Given a struct input_event, build the lisp event which represents
it. If EVENT is 0, build a mouse movement event from the mouse
{
/* A simple keystroke. */
case ascii_keystroke:
- return XFASTINT (event->code);
- break;
+ {
+ int c = XFASTINT (event->code);
+ /* Turn ASCII characters into control characters
+ when proper. */
+ if (event->modifiers & ctrl_modifier)
+ {
+ if (c >= 0100 && c < 0140)
+ {
+ int oc = c;
+ c &= ~0140;
+ /* Set the shift modifier for a control char
+ made from a shifted letter. But only for letters! */
+ if (oc >= 'A' && oc <= 'Z')
+ c |= shift_modifier;
+ }
+ else if (c >= 'a' && c <= 'z')
+ c &= ~0140;
+ /* Include the bits for control and shift
+ only if the basic ASCII code can't indicate them. */
+ else
+ c |= ctrl_modifier;
+ }
+ c |= (event->modifiers
+ & (meta_modifier | alt_modifier
+ | hyper_modifier | super_modifier));
+ return c;
+ }
/* A function key. The symbol may need to have modifier prefixes
tacked onto it. */
/* A mouse click. Figure out where it is, decide whether it's
a press, click or drag, and build the appropriate structure. */
case mouse_click:
+ case scroll_bar_click:
{
int button = XFASTINT (event->code);
- int part;
- Lisp_Object window;
- Lisp_Object posn;
- struct mouse_position *loc;
+ Lisp_Object position;
+ Lisp_Object *start_pos_ptr;
+ Lisp_Object start_pos;
- if (button < 0 || button >= NUM_MOUSE_BUTTONS)
+ if (button < 0 || button >= NUM_MOUSE_BUTTONS)
abort ();
- /* Where did this mouse click occur? */
- window = window_from_coordinates (event->frame,
- XINT (event->x), XINT (event->y),
- &part);
- if (XTYPE (window) != Lisp_Window)
- posn = Qnil;
- else
+ /* Build the position as appropriate for this mouse click. */
+ if (event->kind == mouse_click)
{
- XSETINT (event->x, (XINT (event->x)
- - XINT (XWINDOW (window)->left)));
- XSETINT (event->y, (XINT (event->y)
- - XINT (XWINDOW (window)->top)));
- if (part == 1)
- posn = Qmode_line;
- else if (part == 2)
- posn = Qvertical_line;
+ int part;
+ FRAME_PTR f = XFRAME (event->frame_or_window);
+ Lisp_Object window
+ = window_from_coordinates (f, XINT (event->x), XINT (event->y),
+ &part);
+ Lisp_Object posn;
+
+ if (XINT (event->y) < FRAME_MENU_BAR_LINES (f))
+ {
+ int hpos;
+ Lisp_Object items;
+ items = FRAME_MENU_BAR_ITEMS (f);
+ for (; CONSP (items); items = XCONS (items)->cdr)
+ {
+ Lisp_Object pos, string;
+ pos = Fcdr (Fcdr (Fcar (items)));
+ string = Fcar (Fcdr (Fcar (items)));
+ if (XINT (event->x) > XINT (pos)
+ && XINT (event->x) <= XINT (pos) + XSTRING (string)->size)
+ break;
+ }
+ position
+ = Fcons (event->frame_or_window,
+ Fcons (Qmenu_bar,
+ Fcons (Fcons (event->x, event->y),
+ Fcons (make_number (event->timestamp),
+ Qnil))));
+
+ if (CONSP (items))
+ return Fcons (Fcar (Fcar (items)),
+ Fcons (position, Qnil));
+ else
+ return Fcons (Qnil, Fcons (position, Qnil));
+ }
+ else if (XTYPE (window) != Lisp_Window)
+ posn = Qnil;
else
- XSET (posn, Lisp_Int,
- buffer_posn_from_coords (XWINDOW (window),
- XINT (event->x),
- XINT (event->y)));
+ {
+ XSETINT (event->x,
+ (XINT (event->x) - XINT (XWINDOW (window)->left)));
+ XSETINT (event->y,
+ (XINT (event->y) - XINT (XWINDOW (window)->top)));
+
+ if (part == 1)
+ posn = Qmode_line;
+ else if (part == 2)
+ posn = Qvertical_line;
+ else
+ XSET (posn, Lisp_Int,
+ buffer_posn_from_coords (XWINDOW (window),
+ XINT (event->x),
+ XINT (event->y)));
+ }
+
+ position
+ = Fcons (window,
+ Fcons (posn,
+ Fcons (Fcons (event->x, event->y),
+ Fcons (make_number (event->timestamp),
+ Qnil))));
}
-
- /* If this is a button press, squirrel away the location, so we
- can decide later whether it was a click or a drag. */
- loc = button_down_location + button;
- if (event->modifiers & down_modifier)
+ else
{
- loc->window = window;
- loc->buffer_pos = posn;
- loc->x = event->x;
- loc->y = event->y;
- loc->timestamp = event->timestamp;
+ Lisp_Object window = event->frame_or_window;
+ Lisp_Object portion_whole = Fcons (event->x, event->y);
+ Lisp_Object part = *scroll_bar_parts[(int) event->part];
+
+ position =
+ Fcons (window,
+ Fcons (Qvertical_scroll_bar,
+ Fcons (portion_whole,
+ Fcons (make_number (event->timestamp),
+ Fcons (part,
+ Qnil)))));
}
+ start_pos_ptr = &XVECTOR (button_down_location)->contents[button];
+
+ start_pos = *start_pos_ptr;
+ *start_pos_ptr = Qnil;
+
+ /* If this is a button press, squirrel away the location, so
+ we can decide later whether it was a click or a drag. */
+ if (event->modifiers & down_modifier)
+ *start_pos_ptr = Fcopy_alist (position);
+
/* Now we're releasing a button - check the co-ordinates to
- see if this was a click or a drag. */
+ see if this was a click or a drag. */
else if (event->modifiers & up_modifier)
{
+ /* If we did not see a down before this up,
+ ignore the up. Probably this happened because
+ the down event chose a menu item.
+ It would be an annoyance to treat the release
+ of the button that chose the menu item
+ as a separate event. */
+
+ if (XTYPE (start_pos) != Lisp_Cons)
+ return Qnil;
+
event->modifiers &= ~up_modifier;
- event->modifiers |= ((event->x == loc->x && event->y == loc->y)
- ? click_modifier
- : drag_modifier);
+#if 0 /* Formerly we treated an up with no down as a click event. */
+ if (XTYPE (start_pos) != Lisp_Cons)
+ event->modifiers |= click_modifier;
+ else
+#endif
+ {
+ /* The third element of every position should be the (x,y)
+ pair. */
+ Lisp_Object down = Fnth (make_number (2), start_pos);
+
+ event->modifiers |= ((EQ (event->x, XCONS (down)->car)
+ && EQ (event->y, XCONS (down)->cdr))
+ ? click_modifier
+ : drag_modifier);
+ }
}
else
/* Every mouse event should either have the down_modifier or
- the up_modifier set. */
+ the up_modifier set. */
abort ();
-
- /* Build the event. */
{
- Lisp_Object head, start, end;
-
- /* Build the components of the event. */
- head = modify_event_symbol (button - 1,
- event->modifiers,
- Qmouse_click,
- lispy_mouse_names, &mouse_syms,
- (sizeof (lispy_mouse_names)
- / sizeof (lispy_mouse_names[0])));
- end = Fcons (window,
- Fcons (posn,
- Fcons (Fcons (event->x, event->y),
- Fcons (make_number (event->timestamp),
- Qnil))));
- if (event->modifiers & drag_modifier)
- start = Fcons (loc->window,
- Fcons (loc->buffer_pos,
- Fcons (Fcons (loc->x, loc->y),
- Fcons (make_number (loc->timestamp),
- Qnil))));
-
- /* Assemble the pieces. */
+ /* Get the symbol we should use for the mouse click. */
+ Lisp_Object head
+ = modify_event_symbol (button,
+ event->modifiers,
+ Qmouse_click,
+ lispy_mouse_names, &mouse_syms,
+ (sizeof (lispy_mouse_names)
+ / sizeof (lispy_mouse_names[0])));
+
if (event->modifiers & drag_modifier)
return Fcons (head,
- Fcons (start,
- Fcons (end,
+ Fcons (start_pos,
+ Fcons (position,
Qnil)));
else
return Fcons (head,
- Fcons (end,
+ Fcons (position,
Qnil));
}
}
- /* A scrollbar click. Build a list containing the relevant
- information. */
- case scrollbar_click:
- {
- Lisp_Object button
- = modify_event_symbol (XFASTINT (event->code) - 1,
- event->modifiers,
- Qmouse_click,
- lispy_mouse_names, &mouse_syms,
- (sizeof (lispy_mouse_names)
- / sizeof (lispy_mouse_names[0])));
- return Fcons (event->part,
- Fcons (FRAME_SELECTED_WINDOW (event->frame),
- Fcons (button,
- Fcons (Fcons (event->x, event->y),
- Fcons (make_number
- (event->timestamp),
- Qnil)))));
- }
-
/* The 'kind' field of the event is something we don't recognize. */
default:
- abort();
+ abort ();
}
}
static Lisp_Object
-make_lispy_movement (frame, x, y, time)
+make_lispy_movement (frame, bar_window, part, x, y, time)
FRAME_PTR frame;
+ Lisp_Object bar_window;
+ enum scroll_bar_part part;
Lisp_Object x, y;
unsigned long time;
{
- Lisp_Object window;
- int ix, iy;
- Lisp_Object posn;
- int part;
-
- ix = XINT (x);
- iy = XINT (y);
- window = (frame
- ? window_from_coordinates (frame, ix, iy, &part)
- : Qnil);
- if (XTYPE (window) != Lisp_Window)
- posn = Qnil;
+ /* Is it a scroll bar movement? */
+ if (frame && ! NILP (bar_window))
+ {
+ Lisp_Object part_sym = *scroll_bar_parts[(int) part];
+
+ return Fcons (Qscroll_bar_movement,
+ (Fcons (Fcons (bar_window,
+ Fcons (Qvertical_scroll_bar,
+ Fcons (Fcons (x, y),
+ Fcons (make_number (time),
+ Fcons (part_sym,
+ Qnil))))),
+ Qnil)));
+ }
+
+ /* Or is it an ordinary mouse movement? */
else
{
- ix -= XINT (XWINDOW (window)->left);
- iy -= XINT (XWINDOW (window)->top);
- if (part == 1)
- posn = Qmode_line;
- else if (part == 2)
- posn = Qvertical_line;
+ int area;
+ Lisp_Object window =
+ (frame
+ ? window_from_coordinates (frame, XINT (x), XINT (y), &area)
+ : Qnil);
+ Lisp_Object posn;
+
+ if (XTYPE (window) == Lisp_Window)
+ {
+ XSETINT (x, XINT (x) - XINT (XWINDOW (window)->left));
+ XSETINT (y, XINT (y) - XINT (XWINDOW (window)->top));
+
+ if (area == 1)
+ posn = Qmode_line;
+ else if (area == 2)
+ posn = Qvertical_line;
+ else
+ XSET (posn, Lisp_Int,
+ buffer_posn_from_coords (XWINDOW (window),
+ XINT (x), XINT (y)));
+ }
else
- XSET (posn, Lisp_Int, buffer_posn_from_coords (XWINDOW (window),
- ix, iy));
- }
+ {
+ window = Qnil;
+ posn = Qnil;
+ }
- XSETINT (x, ix);
- XSETINT (y, iy);
- return Fcons (Qmouse_movement,
- Fcons (Fcons (window,
- Fcons (posn,
- Fcons (Fcons (x, y),
- Fcons (make_number (time),
- Qnil)))),
- Qnil));
+ return Fcons (Qmouse_movement,
+ Fcons (Fcons (window,
+ Fcons (posn,
+ Fcons (Fcons (x, y),
+ Fcons (make_number (time),
+ Qnil)))),
+ Qnil));
+ }
}
-
/* Construct a switch frame event. */
static Lisp_Object
make_lispy_switch_frame (frame)
{
return Fcons (Qswitch_frame, Fcons (frame, Qnil));
}
-
\f
/* Manipulating modifiers. */
break;
case 's':
- if (i + 6 > name->size
- || strncmp (name->data + i, "super-", 6))
- goto no_more_modifiers;
- modifiers |= super_modifier;
- i += 6;
+ SINGLE_LETTER_MOD (super_modifier);
break;
case 'd':
/* Should we include the `click' modifier? */
if (! (modifiers & (down_modifier | drag_modifier))
&& i + 7 == name->size
- && strncmp (name->data + i, "mouse-", 6)
+ && strncmp (name->data + i, "mouse-", 6) == 0
&& ('0' <= name->data[i + 6] && name->data[i + 6] <= '9'))
modifiers |= click_modifier;
to use Fintern, which expects a genuine Lisp_String, and keeps a
reference to it. */
char *new_mods =
- (char *) alloca (sizeof ("A-C-H-M-S-super-down-drag-"));
+ (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-"));
int mod_len;
{
if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; }
if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; }
if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; }
- if (modifiers & super_modifier) { strcpy (p, "super-"); p += 6; }
+ if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; }
if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; }
if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; }
/* The click modifier is denoted by the absence of other modifiers. */
static char *modifier_names[] =
{
- "up", "alt", "control", "hyper", "meta", "shift", "super", "down", "drag",
- "click"
+ "up", 0, 0, 0, 0, 0, 0, "down",
+ "drag", "click", 0, 0, 0, 0, 0, 0,
+ 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
};
+#define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
static Lisp_Object modifier_symbols;
int i;
modifier_list = Qnil;
- for (i = 0; (1<<i) <= modifiers; i++)
+ for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++)
if (modifiers & (1<<i))
modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i],
modifier_list);
Qnil);
Lisp_Object mask;
+ if (modifiers & ~((1<<VALBITS) - 1))
+ abort ();
XFASTINT (mask) = modifiers;
elements = Fcons (unmodified, Fcons (mask, Qnil));
int modifiers;
Lisp_Object base;
{
- Lisp_Object cache, index, entry;
+ Lisp_Object cache, index, entry, new_symbol;
+
+ /* Mask out upper bits. We don't know where this value's been. */
+ modifiers &= (1<<VALBITS) - 1;
/* The click modifier never figures into cache indices. */
cache = Fget (base, Qmodifier_cache);
entry = Fassq (index, cache);
if (CONSP (entry))
- return XCONS (entry)->cdr;
+ new_symbol = XCONS (entry)->cdr;
+ else
+ {
+ /* We have to create the symbol ourselves. */
+ new_symbol = apply_modifiers_uncached (modifiers,
+ XSYMBOL (base)->name->data,
+ XSYMBOL (base)->name->size);
+
+ /* Add the new symbol to the base's cache. */
+ entry = Fcons (index, new_symbol);
+ Fput (base, Qmodifier_cache, Fcons (entry, cache));
+
+ /* We have the parsing info now for free, so add it to the caches. */
+ XFASTINT (index) = modifiers;
+ Fput (new_symbol, Qevent_symbol_element_mask,
+ Fcons (base, Fcons (index, Qnil)));
+ Fput (new_symbol, Qevent_symbol_elements,
+ Fcons (base, lispy_modifier_list (modifiers)));
+ }
- /* We have to create the symbol ourselves. */
- {
- Lisp_Object new_symbol
- = apply_modifiers_uncached (modifiers,
- XSYMBOL (base)->name->data,
- XSYMBOL (base)->name->size);
-
- /* Add the new symbol to the base's cache. */
- Fput (base, Qmodifier_cache,
- Fcons (Fcons (index, new_symbol), cache));
-
- /* We have the parsing info now for free, so add it to the caches. */
- XFASTINT (index) = modifiers;
- Fput (new_symbol, Qevent_symbol_element_mask,
- Fcons (base, Fcons (index, Qnil)));
- Fput (new_symbol, Qevent_symbol_elements,
- Fcons (base, lispy_modifier_list (modifiers)));
-
- /* This symbol is of the same kind as BASE. */
- Fput (new_symbol, Qevent_kind, Fget (new_symbol, Qevent_kind));
-
- return new_symbol;
- }
+ /* Make sure this symbol is of the same kind as BASE.
+
+ You'd think we could just set this once and for all when we
+ intern the symbol above, but reorder_modifiers may call us when
+ BASE's property isn't set right; we can't assume that just
+ because it has a Qmodifier_cache property it must have its
+ Qevent_kind set right as well. */
+ if (NILP (Fget (new_symbol, Qevent_kind)))
+ {
+ Lisp_Object kind = Fget (base, Qevent_kind);
+
+ if (! NILP (kind))
+ Fput (new_symbol, Qevent_kind, kind);
+ }
+
+ return new_symbol;
}
/* If *symbol_table doesn't seem to be initialized properly, fix that.
*symbol_table should be a lisp vector TABLE_SIZE elements long,
- where the Nth element is the symbol for NAME_TABLE[N]. */
+ where the Nth element is the symbol for NAME_TABLE[N], or nil if
+ we've never used that symbol before. */
if (XTYPE (*symbol_table) != Lisp_Vector
|| XVECTOR (*symbol_table)->size != table_size)
{
return apply_modifiers (modifiers, *slot);
}
-\f
-DEFUN ("mouse-click-p", Fmouse_click_p, Smouse_click_p, 1, 1, 0,
- "Return non-nil iff OBJECT is a representation of a mouse event.\n\
-A mouse event is a list of five elements whose car is a symbol of the\n\
-form <MODIFIERS>mouse-<DIGIT>. I hope this is a temporary hack.")
- (object)
- Lisp_Object object;
-{
- if (EVENT_HAS_PARAMETERS (object)
- && EQ (EVENT_HEAD_KIND (EVENT_HEAD (object)),
- Qmouse_click))
- return Qt;
- else
- return Qnil;
-}
\f
/* Store into *addr a value nonzero if terminal input chars are available.
Serves the purpose of ioctl (0, FIONREAD, addr)
/* Formerly simply reported no input, but that sometimes led to
a failure of Emacs to terminate.
SIGHUP seems appropriate if we can't reach the terminal. */
+ /* ??? Is it really right to send the signal just to this process
+ rather than to the whole process group?
+ Perhaps on systems with FIONREAD Emacs is alone in its group. */
kill (getpid (), SIGHUP);
if (nread == 0)
return 0;
for (i = 0; i < nread; i++)
{
buf[i].kind = ascii_keystroke;
- XSET (buf[i].code, Lisp_Int, cbuf[i]);
- buf[i].frame = selected_frame;
+ buf[i].modifiers = 0;
+ if (meta_key == 1 && (cbuf[i] & 0x80))
+ buf[i].modifiers = meta_modifier;
+ if (meta_key != 2)
+ cbuf[i] &= ~0x80;
+
+ XSET (buf[i].code, Lisp_Int, cbuf[i]);
+#ifdef MULTI_FRAME
+ XSET (buf[i].frame_or_window, Lisp_Frame, selected_frame);
+#else
+ buf[i].frame_or_window = Qnil;
+#endif
}
}
errno = old_errno;
}
#endif /* SIGIO */
+
+/* Send ourselves a SIGIO.
+
+ This function exists so that the UNBLOCK_INPUT macro in
+ blockinput.h can have some way to take care of input we put off
+ dealing with, without assuming that every file which uses
+ UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
+void
+reinvoke_input_signal ()
+{
+#ifdef SIGIO
+ kill (0, SIGIO);
+#endif
+}
+
+
\f
/* Return the prompt-string of a sparse keymap.
This is the first element which is a string.
return Qnil;
}
+static Lisp_Object menu_bar_item ();
+static Lisp_Object menu_bar_one_keymap ();
+
+/* Return a list of menu items for a menu bar, appropriate
+ to the current buffer.
+ The elements have the form (KEY STRING . nil). */
+
+Lisp_Object
+menu_bar_items ()
+{
+ /* The number of keymaps we're scanning right now, and the number of
+ keymaps we have allocated space for. */
+ int nmaps;
+
+ /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
+ in the current keymaps, or nil where it is not a prefix. */
+ Lisp_Object *maps;
+
+ Lisp_Object def, tem;
+
+ Lisp_Object result;
+
+ int mapno;
+
+ /* Build our list of keymaps.
+ If we recognize a function key and replace its escape sequence in
+ keybuf with its symbol, or if the sequence starts with a mouse
+ click and we need to switch buffers, we jump back here to rebuild
+ the initial keymaps from the current buffer. */
+ {
+ Lisp_Object *tmaps;
+
+ nmaps = current_minor_maps (0, &tmaps) + 2;
+ maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0]));
+ bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0]));
+#ifdef USE_TEXT_PROPERTIES
+ maps[nmaps-2] = get_local_map (PT, current_buffer);
+#else
+ maps[nmaps-2] = current_buffer->local_map;
+#endif
+ maps[nmaps-1] = global_map;
+ }
+
+ /* Look up in each map the dummy prefix key `menu-bar'. */
+
+ result = Qnil;
+
+ for (mapno = 0; mapno < nmaps; mapno++)
+ {
+ if (! NILP (maps[mapno]))
+ def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1));
+ else
+ def = Qnil;
+
+ tem = Fkeymapp (def);
+ if (!NILP (tem))
+ result = menu_bar_one_keymap (def, result);
+ }
+
+ return Fnreverse (result);
+}
+\f
+/* Scan one map KEYMAP, accumulating any menu items it defines
+ that have not yet been seen in RESULT. Return the updated RESULT. */
+
+static Lisp_Object
+menu_bar_one_keymap (keymap, result)
+ Lisp_Object keymap, result;
+{
+ Lisp_Object tail, item, key, binding, item_string, table;
+
+ /* Loop over all keymap entries that have menu strings. */
+ for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr)
+ {
+ item = XCONS (tail)->car;
+ if (XTYPE (item) == Lisp_Cons)
+ {
+ key = XCONS (item)->car;
+ binding = XCONS (item)->cdr;
+ if (XTYPE (binding) == Lisp_Cons)
+ {
+ item_string = XCONS (binding)->car;
+ if (XTYPE (item_string) == Lisp_String)
+ result = menu_bar_item (key, item_string,
+ Fcdr (binding), result);
+ }
+ }
+ else if (XTYPE (item) == Lisp_Vector)
+ {
+ /* Loop over the char values represented in the vector. */
+ int len = XVECTOR (item)->size;
+ int c;
+ for (c = 0; c < len; c++)
+ {
+ Lisp_Object character;
+ XFASTINT (character) = c;
+ binding = XVECTOR (item)->contents[c];
+ if (XTYPE (binding) == Lisp_Cons)
+ {
+ item_string = XCONS (binding)->car;
+ if (XTYPE (item_string) == Lisp_String)
+ result = menu_bar_item (key, item_string,
+ Fcdr (binding), result);
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
+static Lisp_Object
+menu_bar_item (key, item_string, def, result)
+ Lisp_Object key, item_string, def, result;
+{
+ Lisp_Object tem, elt;
+ Lisp_Object enabled;
+
+ /* See if this entry is enabled. */
+ enabled = Qt;
+
+ if (XTYPE (def) == Lisp_Symbol)
+ {
+ /* No property, or nil, means enable.
+ Otherwise, enable if value is not nil. */
+ tem = Fget (def, Qmenu_enable);
+ if (!NILP (tem))
+ enabled = Feval (tem);
+ }
+
+ /* Add an entry for this key and string
+ if there is none yet. */
+ elt = Fassq (key, result);
+ if (!NILP (enabled) && NILP (elt))
+ result = Fcons (Fcons (key, Fcons (item_string, Qnil)), result);
+
+ return result;
+}
+\f
static int echo_flag;
static int echo_now;
/* Read a character like read_char but optionally prompt based on maps
- in the array MAPS. NMAPS is the length of MAPS.
+ in the array MAPS. NMAPS is the length of MAPS. Return nil if we
+ decided not to read a character, because there are no menu items in
+ MAPS.
PREV_EVENT is the previous input event, or nil if we are reading
the first event of a key sequence.
}
/* If we don't have any menus, just read a character normally. */
- if (NILP (name))
+ if (mapno >= nmaps)
return Qnil;
-#ifdef HAVE_X_WINDOW
-#ifndef NO_X_MENU
+#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_X_MENU
/* If we got to this point via a mouse click,
use a real menu for mouse selection. */
- if (XTYPE (prev_event) == Lisp_Cons)
+ if (EVENT_HAS_PARAMETERS (prev_event))
{
/* Display the menu and get the selection. */
Lisp_Object *realmaps
realmaps[nmaps1++] = maps[mapno];
value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps));
+ if (CONSP (value))
+ {
+ /* If we got more than one event, put all but the first
+ onto this list to be read later.
+ Return just the first event now. */
+ unread_command_events
+ = nconc2 (XCONS (value)->cdr, unread_command_events);
+ value = XCONS (value)->car;
+ }
if (NILP (value))
XSET (value, Lisp_Int, quit_char);
if (used_mouse_menu)
*used_mouse_menu = 1;
return value;
}
-#endif /* not NO_X_MENU */
-#endif /* HAVE_X_WINDOW */
+#endif /* HAVE_X_MENU */
+#endif /* HAVE_X_WINDOWS */
/* Prompt string always starts with map's prompt, and a space. */
strcpy (menu, XSTRING (name)->data);
/* If KEY is a meta ASCII character, treat it like meta-prefix-char
followed by the corresponding non-meta character. */
- if (XTYPE (key) == Lisp_Int
- && XINT (key) >= 0200)
+ if (XTYPE (key) == Lisp_Int && (XINT (key) & CHAR_META))
{
for (i = 0; i < nmaps; i++)
if (! NILP (current[i]))
next[i] = Qnil;
current = next;
- XSET (key, Lisp_Int, XFASTINT (key) & 0177);
+ XSET (key, Lisp_Int, XFASTINT (key) & ~CHAR_META);
}
first_binding = nmaps;
lower-case letter, return the bindings for the lower-case letter. */
if (first_binding == nmaps
&& XTYPE (key) == Lisp_Int
- && UPPERCASEP (XINT (key)))
+ && ((((XINT (key) & 0x3ffff)
+ < XSTRING (current_buffer->downcase_table)->size)
+ && UPPERCASEP (XINT (key) & 0x3ffff))
+ || (XINT (key) & shift_modifier)))
{
- XSETINT (key, DOWNCASE (XINT (key)));
+ if (XINT (key) & shift_modifier)
+ XSETINT (key, XINT (key) & ~shift_modifier);
+ else
+ XSETINT (key, DOWNCASE (XINT (key)));
first_binding = nmaps;
for (i = nmaps - 1; i >= 0; i--)
defs[i] = Qnil;
}
}
-
+
/* Given the set of bindings we've found, produce the next set of maps. */
if (first_binding < nmaps)
for (i = 0; i < nmaps; i++)
If the user switches frames in the midst of a key sequence, we put
off the switch-frame event until later; the next call to
read_char will return it. */
+
static int
read_key_sequence (keybuf, bufsize, prompt)
Lisp_Object *keybuf;
if (NILP (Fkeymapp (Vfunction_key_map)))
fkey_start = fkey_end = bufsize + 1;
- /* We need to save the current buffer in case we switch buffers to
- find the right binding for a mouse click. */
- record_unwind_protect (save_excursion_restore, save_excursion_save ());
-
last_nonmenu_event = Qnil;
if (INTERACTIVE)
echo_start = echo_length ();
keys_start = this_command_key_count;
- replay_sequence_new_buffer:
+ /* We jump here when the key sequence has been thoroughly changed, and
+ we need to rescan it starting from the beginning. When we jump here,
+ keybuf[0..mock_input] holds the sequence we should reread. */
+ replay_sequence:
+
/* Build our list of keymaps.
- If the sequence starts with a mouse click, we may need to switch buffers
- and jump back here; that's what replay_sequence_new_buffer is for. */
+ If we recognize a function key and replace its escape sequence in
+ keybuf with its symbol, or if the sequence starts with a mouse
+ click and we need to switch buffers, we jump back here to rebuild
+ the initial keymaps from the current buffer. */
{
Lisp_Object *maps;
nmaps_allocated = nmaps;
}
bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0]));
- submaps[nmaps-2] = current_buffer->keymap;
+#ifdef USE_TEXT_PROPERTIES
+ submaps[nmaps-2] = get_local_map (PT, current_buffer);
+#else
+ submaps[nmaps-2] = current_buffer->local_map;
+#endif
submaps[nmaps-1] = global_map;
}
if (! NILP (submaps[first_binding]))
break;
- replay_sequence:
/* We jump here when a function key substitution has forced us to
reprocess the current key sequence. keybuf[0..mock_input] is the
sequence we want to reread. */
Lisp_Object key;
int used_mouse_menu = 0;
+ /* Where the last real key started. If we need to throw away a
+ key that has expanded into more than one element of keybuf
+ (say, a mouse click on the mode line which is being treated
+ as [mode-line (mouse-...)], then we backtrack to this point
+ of keybuf. */
+ int last_real_key_start;
+
/* These variables are analogous to echo_start and keys_start;
while those allow us to restart the entire key sequence,
echo_local_start and keys_local_start allow us to throw away
/* If not, we should actually read a character. */
else
{
+ last_real_key_start = t;
+
key = read_char (!prompt, nmaps, submaps, last_nonmenu_event,
&used_mouse_menu);
/* read_char returns -1 at the end of a macro.
Emacs 18 handles this by returning immediately with a
zero, so that's what we'll do. */
- if (XTYPE (key) == Lisp_Int && XINT (key) < 0)
+ if (XTYPE (key) == Lisp_Int && XINT (key) == -1)
{
t = 0;
goto done;
mock_input = t + 1;
}
+ /* Arrange to go back to the original buffer once we're
+ done reading the key sequence. Note that we can't
+ use save_excursion_{save,restore} here, because they
+ save point as well as the current buffer; we don't
+ want to save point, because redisplay may change it,
+ to accomodate a Fset_window_start or something. We
+ don't want to do this at the top of the function,
+ because we may get input from a subprocess which
+ wants to change the selected window and stuff (say,
+ emacsclient). */
+ record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
+
set_buffer_internal (XBUFFER (XWINDOW (window)->buffer));
- goto replay_sequence_new_buffer;
+ goto replay_sequence;
}
else if (XTYPE (posn) == Lisp_Symbol)
{
goto replay_key;
}
}
+ else
+ {
+ Lisp_Object posn = POSN_BUFFER_POSN (EVENT_START (key));
+
+ /* Handle menu-bar events:
+ insert the dummy prefix char `menu-bar'. */
+ if (EQ (posn, Qmenu_bar))
+ {
+ if (t + 1 >= bufsize)
+ error ("key sequence too long");
+ /* Run the Lucid hook. */
+ call1 (Vrun_hooks, Qactivate_menubar_hook);
+ /* If it has changed current-menubar from previous value,
+ really recompute the menubar from the value. */
+ if (! NILP (Vlucid_menu_bar_dirty_flag))
+ call0 (Qrecompute_lucid_menubar);
+ keybuf[t] = posn;
+ keybuf[t+1] = key;
+ mock_input = t + 2;
+ goto replay_sequence;
+ }
+ }
}
}
if (XTYPE (head) == Lisp_Symbol)
{
Lisp_Object breakdown = parse_modifiers (head);
- Lisp_Object modifiers =
- XINT (XCONS (XCONS (breakdown)->cdr)->car);
+ int modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car);
/* We drop unbound `down-' events altogether. */
if (modifiers & down_modifier)
{
- /* To make sure that mock_input doesn't just give
- this event back to us; we want to delete this
- event from the mock input queue. We could delete
- keybuf[t] and shift everything after that to the
- left by one spot, but we'd also have to fix up
- any variable that points into keybuf, and shifting
- isn't really necessary anyway.
-
- Adding prefixes for non-textual mouse clicks creates
- two characters of mock input, and this must be the
- second, so mock_input would be over anyway; it's okay
- to zero it.
-
+ /* Dispose of this event by simply jumping back to
+ replay_key, to get another event.
+
+ Note that if this event came from mock input,
+ then just jumping back to replay_key will just
+ hand it to us again. So we have to wipe out any
+ mock input.
+
+ We could delete keybuf[t] and shift everything
+ after that to the left by one spot, but we'd also
+ have to fix up any variable that points into
+ keybuf, and shifting isn't really necessary
+ anyway.
+
+ Adding prefixes for non-textual mouse clicks
+ creates two characters of mock input, and both
+ must be thrown away. If we're only looking at
+ the prefix now, we can just jump back to
+ replay_key. On the other hand, if we've already
+ processed the prefix, and now the actual click
+ itself is giving us trouble, then we've lost the
+ state of the keymaps we want to backtrack to, and
+ we need to replay the whole sequence to rebuild
+ it.
+
Beyond that, only function key expansion could
create more than two keys, but that should never
generate mouse events, so it's okay to zero
mock_input in that case too.
-
+
Isn't this just the most wonderful code ever? */
- mock_input = 0;
- goto replay_key;
+ if (t == last_real_key_start)
+ {
+ mock_input = 0;
+ goto replay_key;
+ }
+ else
+ {
+ mock_input = last_real_key_start;
+ goto replay_sequence;
+ }
}
/* We turn unbound `drag-' events into `click-'
key = keybuf[fkey_end++];
/* Look up meta-characters by prefixing them
with meta_prefix_char. I hate this. */
- if (XTYPE (key) == Lisp_Int && XINT (key) & 0x80)
+ if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier)
{
fkey_next =
get_keymap_1
(access_keymap
(fkey_map, meta_prefix_char, 1)),
0, 1);
- XFASTINT (key) = XFASTINT (key) & 0x7f;
+ XFASTINT (key) = XFASTINT (key) & ~meta_modifier;
}
else
fkey_next = fkey_map;
Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\
as a continuation of the previous key.\n\
\n\
-If Emacs is running on multiple frames, switching between frames in\n\
-the midst of a keystroke will toss any prefix typed so far. A C-g\n\
-typed while in this function is treated like any other character, and\n\
-`quit-flag' is not set.")
+A C-g typed while in this function is treated like any other character,\n\
+and `quit-flag' is not set.\n\
+\n\
+If the key sequence starts with a mouse click, then the sequence is read\n\
+using the keymaps of the buffer of the window clicked in, not the buffer\n\
+of the selected window as normal.\n\
+\n\
+`read-key-sequence' drops unbound button-down events, since you normally\n\
+only care about the click or drag events which follow them. If a drag\n\
+event is unbound, but the corresponding click event would be bound,\n\
+`read-key-sequence' turns the drag event into a click event at the\n\
+drag's starting position. This means that you don't have to distinguish\n\
+between click and drag events unless you want to.\n\
+\n\
+`read-key-sequence' prefixes mouse events on mode lines, the vertical\n\
+lines separating windows, and scroll bars with imaginary keys\n\
+`mode-line', `vertical-line', and `vertical-scroll-bar'.\n\
+\n\
+If the user switches frames in the middle of a key sequence, the\n\
+frame-switch event is put off until after the current key sequence.\n\
+\n\
+`read-key-sequence' checks `function-key-map' for function key\n\
+sequences, where they wouldn't conflict with ordinary bindings. See\n\
+`function-key-map' for more details.")
(prompt, continue_echo)
Lisp_Object prompt, continue_echo;
{
NILP (prompt) ? 0 : XSTRING (prompt)->data);
UNGCPRO;
- return make_array (i, keybuf);
+ return make_event_array (i, keybuf);
}
\f
DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0,
Actually, the value is nil only if we can be sure that no input is available.")
()
{
- if (!NILP (unread_command_char))
+ if (!NILP (unread_command_events) || unread_command_char != -1)
return (Qt);
return detect_input_pending () ? Qt : Qnil;
}
DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0,
- "Return vector of last 100 chars read from terminal.")
+ "Return vector of last 100 events, not counting those from keyboard macros.")
()
{
Lisp_Object *keys = XVECTOR (recent_keys)->contents;
}
DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0,
- "Return string of the keystrokes that invoked this command.")
+ "Return the key sequence that invoked this command.\n\
+The value is a string or a vector.")
()
{
- return make_array (this_command_key_count,
- XVECTOR (this_command_keys)->contents);
+ return make_event_array (this_command_key_count,
+ XVECTOR (this_command_keys)->contents);
}
DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0,
DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1,
"FOpen dribble file: ",
- "Start writing all keyboard characters to FILE.")
+ "Start writing all keyboard characters to a dribble file called FILE.\n\
+If FILE is nil, close any open dribble file.")
(file)
Lisp_Object file;
{
defining_kbd_macro = 0;
update_mode_lines++;
- unread_command_char = Qnil;
+ unread_command_events = Qnil;
+ unread_command_char = -1;
discard_tty_input ();
- kbd_fetch_ptr = kbd_store_ptr;
+ /* Without the cast, GCC complains that this assignment loses the
+ volatile qualifier of kbd_store_ptr. Is there anything wrong
+ with that? */
+ kbd_fetch_ptr = (struct input_event *) kbd_store_ptr;
+ Ffillarray (kbd_buffer_frame_or_window, Qnil);
input_pending = 0;
return Qnil;
"Stop Emacs and return to superior process. You can resume later.\n\
On systems that don't have job control, run a subshell instead.\n\n\
If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
-to be read as terminal input by Emacs's superior shell.\n\
-Before suspending, if `suspend-hook' is bound and value is non-nil\n\
-call the value as a function of no args. Don't suspend if it returns non-nil.\n\
-Otherwise, suspend normally and after resumption call\n\
+to be read as terminal input by Emacs's parent, after suspension.\n\
+\n\
+Before suspending, call the functions in `suspend-hook' with no args.\n\
+If any of them returns nil, don't call the rest and don't suspend.\n\
+Otherwise, suspend normally and after resumption run the normal hook\n\
`suspend-resume-hook' if that is bound and non-nil.\n\
\n\
Some operating systems cannot stop the Emacs process and resume it later.\n\
-On such systems, Emacs will start a subshell and wait for it to exit.")
+On such systems, Emacs starts a subshell instead of suspending.")
(stuffstring)
Lisp_Object stuffstring;
{
- register Lisp_Object tem;
+ Lisp_Object tem;
int count = specpdl_ptr - specpdl;
int old_height, old_width;
int width, height;
- struct gcpro gcpro1;
+ struct gcpro gcpro1, gcpro2;
extern init_sys_modes ();
if (!NILP (stuffstring))
CHECK_STRING (stuffstring, 0);
- GCPRO1 (stuffstring);
- /* Call value of suspend-hook
- if it is bound and value is non-nil. */
+ /* Run the functions in suspend-hook. */
if (!NILP (Vrun_hooks))
- {
- tem = call1 (Vrun_hooks, intern ("suspend-hook"));
- if (!EQ (tem, Qnil)) return Qnil;
- }
+ call1 (Vrun_hooks, intern ("suspend-hook"));
+ GCPRO1 (stuffstring);
get_frame_size (&old_width, &old_height);
reset_sys_modes ();
/* sys_suspend can get an error if it tries to fork a subshell
if (width != old_width || height != old_height)
change_frame_size (0, height, width, 0, 0);
- /* Call value of suspend-resume-hook
- if it is bound and value is non-nil. */
+ /* Run suspend-resume-hook. */
if (!NILP (Vrun_hooks))
call1 (Vrun_hooks, intern ("suspend-resume-hook"));
kbd_fetch_ptr = kbd_buffer;
if (kbd_fetch_ptr->kind == ascii_keystroke)
stuff_char (XINT (kbd_fetch_ptr->code));
+ kbd_fetch_ptr->kind = no_event;
+ (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr
+ - kbd_buffer]
+ = Qnil);
kbd_fetch_ptr++;
}
input_pending = 0;
char c;
/* Must preserve main program's value of errno. */
int old_errno = errno;
- extern Lisp_Object Vwindow_system;
#ifdef USG
/* USG systems forget handlers when they are used;
clear_waiting_for_input ();
input_pending = 0;
- unread_command_char = Qnil;
+ unread_command_events = Qnil;
+ unread_command_char = -1;
+
+#ifdef POLL_FOR_INPUT
+ /* May be > 1 if in recursive minibuffer. */
+ if (poll_suppress_count == 0)
+ abort ();
+#endif
_longjmp (getcjmp, 1);
}
nil means use CBREAK mode.\n\
Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\
(no effect except in CBREAK mode).\n\
-Third arg META non-nil means accept 8-bit input (for a Meta key).\n\
- Otherwise, the top bit is ignored, on the assumption it is parity.\n\
-Optional fourth arg QUIT if non-nil specifies character to use for quitting.")
+Third arg META t means accept 8-bit input (for a Meta key).\n\
+ META nil means ignore the top bit, on the assumption it is parity.\n\
+ Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\
+Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\
+See also `current-input-mode'.")
(interrupt, flow, meta, quit)
Lisp_Object interrupt, flow, meta, quit;
{
interrupt_input = 1;
#endif
flow_control = !NILP (flow);
- meta_key = !NILP (meta);
+ if (NILP (meta))
+ meta_key = 0;
+ else if (EQ (meta, Qt))
+ meta_key = 1;
+ else
+ meta_key = 2;
if (!NILP (quit))
/* Don't let this value be out of range. */
quit_char = XINT (quit) & (meta_key ? 0377 : 0177);
init_sys_modes ();
return Qnil;
}
+
+DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0,
+ "Return information about the way Emacs currently reads keyboard input.\n\
+The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\
+ INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\
+ nil, Emacs is using CBREAK mode.\n\
+ FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\
+ terminal; this does not apply if Emacs uses interrupt-driven input.\n\
+ META is t if accepting 8-bit input with 8th bit as Meta flag.\n\
+ META nil means ignoring the top bit, on the assumption it is parity.\n\
+ META is neither t nor nil if accepting 8-bit input and using\n\
+ all 8 bits as the character code.\n\
+ QUIT is the character Emacs currently uses to quit.\n\
+The elements of this list correspond to the arguments of\n\
+`set-input-mode'.")
+ ()
+{
+ Lisp_Object val[4];
+
+ val[0] = interrupt_input ? Qt : Qnil;
+ val[1] = flow_control ? Qt : Qnil;
+ val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil;
+ XSETINT (val[3], quit_char);
+
+ return Flist (val, sizeof (val) / sizeof (val[0]));
+}
+
\f
init_keyboard ()
{
command_loop_level = -1;
immediate_quit = 0;
quit_char = Ctl ('g');
- unread_command_char = Qnil;
+ unread_command_events = Qnil;
+ unread_command_char = -1;
total_keys = 0;
recent_keys_index = 0;
kbd_fetch_ptr = kbd_buffer;
do_mouse_tracking = 0;
input_pending = 0;
+#ifdef MULTI_FRAME
+ /* This means that command_loop_1 won't try to select anything the first
+ time through. */
+ internal_last_event_frame = Qnil;
+ Vlast_event_frame = internal_last_event_frame;
+#endif
+
+ /* If we're running a dumped Emacs, we need to clear out
+ kbd_buffer_frame_or_window, in case some events got into it
+ before we dumped.
+
+ If we're running an undumped Emacs, it hasn't been initialized by
+ syms_of_keyboard yet. */
+ if (initialized)
+ Ffillarray (kbd_buffer_frame_or_window, Qnil);
+
if (!noninteractive)
{
signal (SIGINT, interrupt_signal);
-#ifdef HAVE_TERMIO
+#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
/* For systems with SysV TERMIO, C-g is set up for both SIGINT and
SIGQUIT and we can't tell which one it will give us. */
signal (SIGQUIT, interrupt_signal);
};
struct event_head head_table[] = {
- &Qmouse_movement, "mouse-movement", &Qmouse_movement,
- &Qvscrollbar_part, "vscrollbar-part", &Qscrollbar_click,
- &Qvslider_part, "vslider-part", &Qscrollbar_click,
- &Qvthumbup_part, "vthumbup-part", &Qscrollbar_click,
- &Qvthumbdown_part, "vthumbdown-part", &Qscrollbar_click,
- &Qhscrollbar_part, "hscrollbar-part", &Qscrollbar_click,
- &Qhslider_part, "hslider-part", &Qscrollbar_click,
- &Qhthumbleft_part, "hthumbleft-part", &Qscrollbar_click,
- &Qhthumbright_part,"hthumbright-part", &Qscrollbar_click,
- &Qswitch_frame, "switch-frame", &Qswitch_frame
+ &Qmouse_movement, "mouse-movement", &Qmouse_movement,
+ &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement,
+ &Qswitch_frame, "switch-frame", &Qswitch_frame,
};
syms_of_keyboard ()
Qdisabled = intern ("disabled");
staticpro (&Qdisabled);
+ Qpre_command_hook = intern ("pre-command-hook");
+ staticpro (&Qpre_command_hook);
+
+ Qpost_command_hook = intern ("post-command-hook");
+ staticpro (&Qpost_command_hook);
+
Qfunction_key = intern ("function-key");
staticpro (&Qfunction_key);
Qmouse_click = intern ("mouse-click");
staticpro (&Qmouse_click);
- Qmouse_movement = intern ("scrollbar-click");
- staticpro (&Qmouse_movement);
+
+ Qmenu_enable = intern ("menu-enable");
+ staticpro (&Qmenu_enable);
Qmode_line = intern ("mode-line");
staticpro (&Qmode_line);
Qvertical_line = intern ("vertical-line");
staticpro (&Qvertical_line);
+ Qvertical_scroll_bar = intern ("vertical-scroll-bar");
+ staticpro (&Qvertical_scroll_bar);
+ Qmenu_bar = intern ("menu-bar");
+ staticpro (&Qmenu_bar);
+
+ Qabove_handle = intern ("above-handle");
+ staticpro (&Qabove_handle);
+ Qhandle = intern ("handle");
+ staticpro (&Qhandle);
+ Qbelow_handle = intern ("below-handle");
+ staticpro (&Qbelow_handle);
Qevent_kind = intern ("event-kind");
staticpro (&Qevent_kind);
Qmodifier_cache = intern ("modifier-cache");
staticpro (&Qmodifier_cache);
+ Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar");
+ staticpro (&Qrecompute_lucid_menubar);
+ Qactivate_menubar_hook = intern ("activate-menubar-hook");
+ staticpro (&Qactivate_menubar_hook);
+
{
struct event_head *p;
}
}
- {
- int i;
-
- for (i = 0; i < NUM_MOUSE_BUTTONS; i++)
- staticpro (&button_down_location[i].window);
- }
+ button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil);
+ staticpro (&button_down_location);
{
int i;
modifier_symbols = Fmake_vector (make_number (len), Qnil);
for (i = 0; i < len; i++)
- XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]);
+ if (modifier_names[i])
+ XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]);
staticpro (&modifier_symbols);
}
this_command_keys = Fmake_vector (make_number (40), Qnil);
staticpro (&this_command_keys);
+ kbd_buffer_frame_or_window
+ = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil);
+ staticpro (&kbd_buffer_frame_or_window);
+
func_key_syms = Qnil;
staticpro (&func_key_syms);
defsubr (&Sread_key_sequence);
defsubr (&Srecursive_edit);
defsubr (&Strack_mouse);
- defsubr (&Smouse_click_p);
defsubr (&Sinput_pending_p);
defsubr (&Scommand_execute);
defsubr (&Srecent_keys);
defsubr (&Sdiscard_input);
defsubr (&Sopen_dribble_file);
defsubr (&Sset_input_mode);
+ defsubr (&Scurrent_input_mode);
defsubr (&Sexecute_extended_command);
DEFVAR_LISP ("disabled-command-hook", &Vdisabled_command_hook,
\(has a non-nil `disabled' property).");
DEFVAR_LISP ("last-command-char", &last_command_char,
- "Last terminal input key that was part of a command.");
+ "Last input event that was part of a command.");
+
+ DEFVAR_LISP ("last-command-event", &last_command_char,
+ "Last input event that was part of a command.");
DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event,
- "Last terminal input key in a command, except for mouse menus.\n\
+ "Last input event in a command, except for mouse menu events.\n\
Mouse menus give back keys that don't look like mouse events;\n\
this variable holds the actual mouse event that led to the menu,\n\
so that you can determine whether the command was run by mouse or not.");
DEFVAR_LISP ("last-input-char", &last_input_char,
- "Last terminal input key.");
+ "Last input event.");
+
+ DEFVAR_LISP ("last-input-event", &last_input_char,
+ "Last input event.");
- DEFVAR_LISP ("unread-command-char", &unread_command_char,
- "Object to be read as next input from input stream, or nil if none.");
+ DEFVAR_LISP ("unread-command-events", &unread_command_events,
+ "List of objects to be read as next command input events.");
+
+ DEFVAR_INT ("unread-command-char", &unread_command_char,
+ "If not -1, an object to be read as next command input event.");
DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char,
"Meta-prefix character code. Meta-foo as command input\n\
"*Number of complete keys read from the keyboard so far.");
num_input_keys = 0;
+#ifdef MULTI_FRAME
DEFVAR_LISP ("last-event-frame", &Vlast_event_frame,
"*The frame in which the most recently read event occurred.\n\
If the last event came from a keyboard macro, this is set to `macro'.");
Vlast_event_frame = Qnil;
+#endif
DEFVAR_LISP ("help-char", &help_char,
"Character to recognize as meaning Help.\n\
"Character to see next line of menu prompt.\n\
Type this character while in a menu prompt to rotate around the lines of it.");
XSET (menu_prompt_more_char, Lisp_Int, ' ');
+
+ DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers,
+ "A mask of additional modifier keys to use with every keyboard character.\n\
+Emacs applies the modifiers of the character stored here to each keyboard\n\
+character it reads. For example, after evaluating the expression\n\
+ (setq extra-keyboard-modifiers ?\C-x)\n\
+all input characters will have the control modifier applied to them.\n\
+\n\
+Note that the character ?\C-@, equivalent to the integer zero, does\n\
+not count as a control character; rather, it counts as a character\n\
+with no modifiers; thus, setting extra_keyboard_modifiers to zero\n\
+cancels any modification.");
+ extra_keyboard_modifiers = 0;
+
+ DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark,
+ "If an editing command sets this to t, deactivate the mark afterward.\n\
+The command loop sets this to nil before each command,\n\
+and tests the value when the command returns.\n\
+Buffer modification stores t in this variable.");
+ Vdeactivate_mark = Qnil;
+
+ DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook,
+ "Normal hook run before each command is executed.");
+ Vpre_command_hook = Qnil;
+
+ DEFVAR_LISP ("post-command-hook", &Vpost_command_hook,
+ "Normal hook run before each command is executed.");
+ Vpost_command_hook = Qnil;
+
+ DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag,
+ "t means menu bar, specified Lucid style, needs to be recomputed.");
+ Vlucid_menu_bar_dirty_flag = Qnil;
}
keys_of_keyboard ()