int
read_event_from_tty_or_stream_desc (Lisp_Event *event,
struct console *con, int fd)
{
unsigned char ch;
int nread;
Lisp_Object console;
XSETCONSOLE (console, con);
nread = read (fd, &ch, 1);
if (nread <= 0)
{
/* deleting the console might not be safe right now ... */
enqueue_magic_eval_event (io_error_delete_console, console);
/* but we definitely need to unselect it to avoid infinite
loops reading EOF's */
Fconsole_disable_input (console);
}
else
{
character_to_event (ch, event, con, 1, 1);
event->channel = console;
return 1;
}
return 0;
}
/*
* Return value is Qt if we have dispatched the command,
* or Qnil if id has not been mapped to a callback.
* Window procedure may try other targets to route the
* command if we return nil
*/
Lisp_Object
mswindows_handle_gui_wm_command (struct frame* f, HWND ctrl, LPARAM id)
{
/* Try to map the command id through the proper hash table */
Lisp_Object callback, callback_ex, image_instance, frame, event;
XSETFRAME (frame, f);
/* #### make_int should assert that --kkm */
assert (XINT (make_int (id)) == id);
image_instance = Fgethash (make_int (id),
FRAME_MSWINDOWS_WIDGET_HASH_TABLE1 (f), Qnil);
/* It is possible for a widget action to cause it to get out of sync
with its instantiator. Thus it is necessary to signal this
possibility. */
if (IMAGE_INSTANCEP (image_instance))
XIMAGE_INSTANCE_WIDGET_ACTION_OCCURRED (image_instance) = 1;
callback = Fgethash (make_int (id),
FRAME_MSWINDOWS_WIDGET_HASH_TABLE2 (f), Qnil);
callback_ex = Fgethash (make_int (id),
FRAME_MSWINDOWS_WIDGET_HASH_TABLE3 (f), Qnil);
if (!NILP (callback_ex) && !UNBOUNDP (callback_ex))
{
event = Fmake_event (Qnil, Qnil);
XEVENT (event)->event_type = misc_user_event;
XEVENT (event)->channel = frame;
XEVENT (event)->timestamp = GetTickCount ();
XEVENT (event)->event.eval.function = Qeval;
XEVENT (event)->event.eval.object =
list4 (Qfuncall, callback_ex, image_instance, event);
}
else if (NILP (callback) || UNBOUNDP (callback))
return Qnil;
else
{
Lisp_Object fn, arg;
event = Fmake_event (Qnil, Qnil);
get_gui_callback (callback, &fn, &arg);
XEVENT (event)->event_type = misc_user_event;
XEVENT (event)->channel = frame;
XEVENT (event)->timestamp = GetTickCount ();
XEVENT (event)->event.eval.function = fn;
XEVENT (event)->event.eval.object = arg;
}
mswindows_enqueue_dispatch_event (event);
/* The result of this evaluation could cause other instances to change so
enqueue an update callback to check this. */
enqueue_magic_eval_event (update_widget_instances, frame);
return Qt;
}
void
popup_selection_callback(Widget widget, LWLIB_ID ignored_id,
XtPointer client_data)
{
Lisp_Object data, image_instance, callback, callback_ex;
Lisp_Object frame, event;
int update_subwindows_p = 0;
struct device *d = get_device_from_display(XtDisplay(widget));
struct frame *f = x_any_widget_or_parent_to_frame(d, widget);
/* set in lwlib to the time stamp associated with the most recent menu
operation */
extern Time x_focus_timestamp_really_sucks_fix_me_better;
if (!f)
return;
if (((EMACS_INT) client_data) == 0)
return;
VOID_TO_LISP(data, client_data);
XSETFRAME(frame, f);
#if 0
/* #### What the hell? I can't understand why this call is here,
and doing it is really courting disaster in the new event
model, since popup_selection_callback is called from
within next_event_internal() and Faccept_process_output()
itself calls next_event_internal(). --Ben */
/* Flush the X and process input */
Faccept_process_output(Qnil, Qnil, Qnil);
#endif
if (((EMACS_INT) client_data) == -1) {
event = Fmake_event(Qnil, Qnil);
XEVENT(event)->event_type = misc_user_event;
XEVENT(event)->channel = frame;
XEVENT(event)->event.eval.function = Qrun_hooks;
XEVENT(event)->event.eval.object = Qmenu_no_selection_hook;
} else {
image_instance = XCAR(data);
callback = XCAR(XCDR(data));
callback_ex = XCDR(XCDR(data));
update_subwindows_p = 1;
/* It is possible for a widget action to cause it to get out of
sync with its instantiator. Thus it is necessary to signal
this possibility. */
if (IMAGE_INSTANCEP(image_instance))
XIMAGE_INSTANCE_WIDGET_ACTION_OCCURRED(image_instance) =
1;
if (!NILP(callback_ex) && !UNBOUNDP(callback_ex)) {
event = Fmake_event(Qnil, Qnil);
XEVENT(event)->event_type = misc_user_event;
XEVENT(event)->channel = frame;
XEVENT(event)->event.eval.function = Qeval;
XEVENT(event)->event.eval.object =
list4(Qfuncall, callback_ex, image_instance, event);
} else if (NILP(callback) || UNBOUNDP(callback))
event = Qnil;
else {
Lisp_Object fn, arg;
event = Fmake_event(Qnil, Qnil);
get_gui_callback(callback, &fn, &arg);
XEVENT(event)->event_type = misc_user_event;
XEVENT(event)->channel = frame;
XEVENT(event)->event.eval.function = fn;
XEVENT(event)->event.eval.object = arg;
}
}
/* This is the timestamp used for asserting focus so we need to get an
up-to-date value event if no events have been dispatched to emacs
*/
#if defined(HAVE_MENUBARS)
DEVICE_X_MOUSE_TIMESTAMP(d) =
x_focus_timestamp_really_sucks_fix_me_better;
#else
DEVICE_X_MOUSE_TIMESTAMP(d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP(d);
#endif
if (!NILP(event))
enqueue_Xt_dispatch_event(event);
/* The result of this evaluation could cause other instances to change so
enqueue an update callback to check this. */
if (update_subwindows_p && !NILP(event))
enqueue_magic_eval_event(update_widget_instances, frame);
}
