/* Define console object for XEmacs.
   Copyright (C) 1996, 2002 Ben Wing

This file is part of XEmacs.

XEmacs 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 3 of the License, or (at your
option) any later version.

XEmacs 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 XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: Not in FSF. */

/* Written by Ben Wing. */

#ifndef INCLUDED_console_h_
#define INCLUDED_console_h_

/* Devices and consoles are similar entities.  The idea is that
   a console represents a physical keyboard/mouse/other-input-source
   while a device represents a display where frames appear on.
   Nowadays "multi-headed" displays with multiple physical screens
   are becoming familiar; in the XEmacs nomenclature, this maps to a
   "console" supporting multiple "devices".

   In the X world, a console is a "Display" while a device is a
   "Screen".  Implementationally, it can sometimes get confusing:
   under X, multiple devices on a single console are different
   "Display" connections to what is in reality the same Display on
   the same server.  Furthermore, in the X model input comes from the
   device and not from the console.  This causes no confusion because
   events are basically always tagged to a particular X window (i.e.
   frame), which exists on only one screen; therefore the event won't
   be reported multiple times even if there are multiple devices on
   the same physical display.

   This is an implementation detail specific to X consoles (e.g. under
   Windows, this could be different, and input would come directly from
   the console).
*/

/* GCC does not like forward enum declaration. This needs to be
   defined here. What a disgust! */

enum console_variant
{
  dead_console,
  tty_console,
  gtk_console,
  x_console,
  mswindows_console,
  msprinter_console,
  stream_console
};

enum device_metrics
{
  DM_color_default, DM_color_select, DM_color_balloon, DM_color_3d_face,
  DM_color_3d_light, DM_color_3d_dark, DM_color_menu, DM_color_menu_highlight,
  DM_color_menu_button, DM_color_menu_disabled, DM_color_toolbar,
  DM_color_scrollbar, DM_color_desktop, DM_color_workspace, DM_font_default,
  DM_font_menubar, DM_font_dialog, DM_size_cursor, DM_size_scrollbar,
  DM_size_menu, DM_size_toolbar, DM_size_toolbar_button,
  DM_size_toolbar_border, DM_size_icon, DM_size_icon_small, DM_size_device,
  DM_size_workspace, DM_offset_workspace, DM_size_device_mm, DM_device_dpi,
  DM_num_bit_planes, DM_num_color_cells, DM_num_screens, DM_mouse_buttons,
  DM_swap_buttons, DM_show_sounds, DM_slow_device, DM_security,
  DM_backing_store, DM_save_under
};

struct console;

DECLARE_LISP_OBJECT (console, struct console);
#define XCONSOLE(x) XRECORD (x, console, struct console)
#define wrap_console(p) wrap_record (p, console)
#define CONSOLEP(x) RECORDP (x, console)
#define CHECK_CONSOLE(x) CHECK_RECORD (x, console)
#define CONCHECK_CONSOLE(x) CONCHECK_RECORD (x, console)

/* Basic properties available to non-privileged users; redefined in
   console-impl.h */

struct console_methods;

int console_live_p (struct console *c);
Lisp_Object console_device_list (struct console *c);

#define CONSOLE_LIVE_P(c) console_live_p (c)
#define CONSOLE_DEVICE_LIST(c) console_device_list (c)

#define CHECK_LIVE_CONSOLE(x) do {			\
  CHECK_CONSOLE (x);					\
  if (! CONSOLE_LIVE_P (XCONSOLE (x)))			\
    dead_wrong_type_argument (Qconsole_live_p, (x));	\
} while (0)
#define CONCHECK_LIVE_CONSOLE(x) do {			\
  CONCHECK_CONSOLE (x);					\
  if (! CONSOLE_LIVE_P (XCONSOLE (x)))			\
    x = wrong_type_argument (Qconsole_live_p, (x));	\
} while (0)

#define CDFW_CONSOLE(obj)				\
   ((WINDOWP  (obj) && WINDOW_LIVE_P (XWINDOW(obj))) ? WINDOW_CONSOLE (XWINDOW (obj))	\
 : ((FRAMEP   (obj) && FRAME_LIVE_P (XFRAME (obj)))  ?  FRAME_CONSOLE (XFRAME  (obj))	\
 : ((DEVICEP  (obj) && DEVICE_LIVE_P (XDEVICE (obj))) ? DEVICE_CONSOLE (XDEVICE (obj))	\
 : ((CONSOLEP (obj) && CONSOLE_LIVE_P (XCONSOLE (obj))) ? obj				\
 : Qnil))))

#define CONSOLE_LOOP(concons) LIST_LOOP (concons, Vconsole_list)
#define CONSOLE_DEVICE_LOOP(devcons, con) \
  LIST_LOOP (devcons, CONSOLE_DEVICE_LIST (con))

EXFUN (Fconsole_disable_input, 1);
EXFUN (Fdelete_console, 2);
EXFUN (Fselect_console, 1);
EXFUN (Fselected_console, 0);

extern Lisp_Object Qcreate_console_hook, Qdelete_console_hook;
extern Lisp_Object Vconsole_defaults, Vconsole_type_list, Vselected_console;

int valid_console_type_p (Lisp_Object type);

Lisp_Object create_console (Lisp_Object name, Lisp_Object type,
			    Lisp_Object connection, Lisp_Object props);
void select_console_1 (Lisp_Object);
struct console *decode_console (Lisp_Object);
void add_entry_to_console_type_list (Lisp_Object symbol,
				     struct console_methods *type);
struct console_methods *decode_console_type (Lisp_Object type,
					     Error_Behavior errb);

enum console_variant get_console_variant (Lisp_Object type);

void delete_console_internal (struct console *con, int force,
			      int from_kill_emacs, int from_io_error);
void io_error_delete_console (Lisp_Object console);
void set_console_last_nonminibuf_frame (struct console *con,
					Lisp_Object frame);
void stuff_buffered_input (Lisp_Object);

#endif /* INCLUDED_console_h_ */
