/* Define device-object for XEmacs.
   Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
   Copyright (C) 1995 Ben Wing
   Copyright (C) 1995 Sun Microsystems

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 2, 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; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

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

/* Written by Chuck Thompson and Ben Wing. */

#ifndef INCLUDED_device_h_
#define INCLUDED_device_h_

#include "console.h"

/* This should really be in redisplay.h but by putting it here we
   won't have to ensure that redisplay.h is always included before
   this file. */
struct pixel_to_glyph_translation_cache
{
  unsigned int valid :1;
  struct frame *frame;
  int low_x_coord, high_x_coord, col, obj_x;
  int low_y_coord, high_y_coord, row, obj_y;
  struct window *w;
  Bufpos bufpos;
  Bufpos closest;
  Charcount modeline_closest;
  Lisp_Object obj1, obj2;
  int retval;
};

#define DEVICE_TYPE_NAME(d) ((d)->devmeths->name)
#define DEVICE_TYPE(d) ((d)->devmeths->symbol)
#define DEVICE_IMPL_FLAG(d, f) CONMETH_IMPL_FLAG ((d)->devmeths, (f))
#define DEVICE_SPECIFIC_FRAME_PROPS(d) \
  ((d)->devmeths->device_specific_frame_props)

/******** Accessing / calling a device method *********/

#define HAS_DEVMETH_P(d, m) HAS_CONTYPE_METH_P ((d)->devmeths, m)
#define DEVMETH(d, m, args) CONTYPE_METH ((d)->devmeths, m, args)
#define MAYBE_DEVMETH(d, m, args) MAYBE_CONTYPE_METH ((d)->devmeths, m, args)
#define DEVMETH_OR_GIVEN(d, m, args, given) \
  CONTYPE_METH_OR_GIVEN((d)->devmeths, m, args, given)
#define MAYBE_INT_DEVMETH(d, m, args) \
  MAYBE_INT_CONTYPE_METH ((d)->devmeths, m, args)
#define MAYBE_LISP_DEVMETH(d, m, args) \
  MAYBE_LISP_CONTYPE_METH ((d)->devmeths, m, args)

struct device
{
  struct lcrecord_header header;

  /* Methods for this device's console.  This can also be retrieved
     through device->console, but it's faster this way. */
  struct console_methods *devmeths;

  /* A structure of auxiliary data specific to the device type.
     struct x_device is used for X window frames; defined in console-x.h
     struct tty_device is used to TTY's; defined in console-tty.h */
  void *device_data;

  /* redisplay flags */
  unsigned int buffers_changed :1;
  unsigned int clip_changed :1;
  unsigned int extents_changed :1;
  unsigned int faces_changed :1;
  unsigned int frame_changed :1;
  unsigned int glyphs_changed :1;
  unsigned int subwindows_changed :1;
  unsigned int subwindows_state_changed :1;
  unsigned int icon_changed :1;
  unsigned int menubar_changed :1;
  unsigned int modeline_changed :1;
  unsigned int point_changed :1;
  unsigned int size_changed :1;
  unsigned int gutter_changed :1;
  unsigned int toolbar_changed :1;
  unsigned int windows_changed :1;
  unsigned int windows_structure_changed :1;

  unsigned int locked :1;

  /* Cache information about last pixel position translated to a
     glyph.  The law of locality applies very heavily here so caching
     the value leads to a significant win.  At the moment this is
     really X specific but once we have generic mouse support it won't
     be. */
  struct pixel_to_glyph_translation_cache pixel_to_glyph_cache;

  /* Output baud rate of device; used for redisplay decisions.  */
  int baud_rate;

  /* sound flags */
  unsigned int on_console_p :1;
  unsigned int connected_to_nas_p :1;

#define MARKED_SLOT(x) Lisp_Object x
#include "devslots.h"

  /* File descriptors for input and output.  Much of the time
     (but not always) these will be the same.  For an X device,
     these both hold the file descriptor of the socket used
     to communicate with the X server.  For a TTY device, these
     may or may not be the same and point to the terminal that
     is used for I/O. */
  int infd, outfd;

  /* infd and outfd are moved outside HAVE_UNIXOID_EVENT_LOOP conditionals,
     because Win32, presumably the first port which does not use select()
     polling, DOES have handles for a console device. -- kkm */

#ifdef HAVE_UNIXOID_EVENT_LOOP
  /* holds some data necessary for SIGIO control.  Perhaps this should
     be inside of device_data; but it is used for both TTY's and X
     device.  Perhaps it should be conditionalized on SIGIO; but
     this requires including syssignal.h and systty.h. */
  int old_fcntl_owner;
#endif
};

DECLARE_LRECORD (device, struct device);
#define XDEVICE(x) XRECORD (x, device, struct device)
#define XSETDEVICE(x, p) XSETRECORD (x, p, device)
#define wrap_device(p) wrap_record (p, device)
#define DEVICEP(x) RECORDP (x, device)
#define CHECK_DEVICE(x) CHECK_RECORD (x, device)
#define CONCHECK_DEVICE(x) CONCHECK_RECORD (x, device)

#define CHECK_LIVE_DEVICE(x) do {			\
  CHECK_DEVICE (x);					\
  if (! DEVICE_LIVE_P (XDEVICE (x)))			\
    dead_wrong_type_argument (Qdevice_live_p, (x));	\
} while (0)
#define CONCHECK_LIVE_DEVICE(x) do {			\
  CONCHECK_DEVICE (x);					\
  if (! DEVICE_LIVE_P (XDEVICE (x)))			\
    x = wrong_type_argument (Qdevice_live_p, (x));	\
} while (0)

#define DEVICE_TYPE_P(d, type)	EQ (DEVICE_TYPE (d), Q##type)

#ifdef ERROR_CHECK_TYPECHECK
INLINE_HEADER struct device *
error_check_device_type (struct device *d, Lisp_Object sym);
INLINE_HEADER struct device *
error_check_device_type (struct device *d, Lisp_Object sym)
{
  assert (EQ (DEVICE_TYPE (d), sym));
  return d;
}
# define DEVICE_TYPE_DATA(d, type)			\
  ((struct type##_device *) error_check_device_type (d, Q##type)->device_data)
#else
# define DEVICE_TYPE_DATA(d, type)			\
  ((struct type##_device *) (d)->device_data)
#endif

#define CHECK_DEVICE_TYPE(x, type)			\
  do {							\
    CHECK_DEVICE (x);					\
    if (!(DEVICEP (x) && DEVICE_TYPE_P (XDEVICE (x),	\
					 type)))	\
      dead_wrong_type_argument				\
	(type##_console_methods->predicate_symbol, x);	\
  } while (0)
#define CONCHECK_DEVICE_TYPE(x, type)			\
  do {							\
    CONCHECK_DEVICE (x);				\
    if (!(DEVICEP (x) && DEVICE_TYPE_P (XDEVICE (x),	\
					 type)))	\
      x = wrong_type_argument				\
	(type##_console_methods->predicate_symbol, x);	\
  } while (0)

#define DEVICE_DISPLAY_P(dev)				\
  (DEVICE_LIVE_P (dev) &&				\
    !DEVICE_IMPL_FLAG (dev, XDEVIMPF_IS_A_PRINTER))

#define CHECK_DISPLAY_DEVICE(dev)			\
  do {							\
    CHECK_DEVICE (dev);					\
    if (!(DEVICEP (dev)					\
          && DEVICE_DISPLAY_P (XDEVICE (dev))))		\
      dead_wrong_type_argument (Qdisplay, dev);		\
  } while (0)

#define CONCHECK_DISPLAY_DEVICE(dev)			\
  do {							\
    CONCHECK_DEVICE (dev);				\
    if (!(DEVICEP (dev)					\
          && DEVICE_DISPLAY_P (XDEVICE (dev))))		\
      wrong_type_argument (Qdisplay, dev);		\
  } while (0)

#define DEVICE_PRINTER_P(dev)				\
  (DEVICE_LIVE_P (dev) && !DEVICE_DISPLAY_P (dev))

#define CHECK_PRINTER_DEVICE(dev)			\
  do {							\
    CHECK_DEVICE (dev);					\
    if (!(DEVICEP (dev)					\
          && DEVICE_PRINTER_P (XDEVICE (dev))))		\
      dead_wrong_type_argument (Qprinter, dev);		\
  } while (0)

#define CONCHECK_PRINTER_DEVICE(dev)			\
  do {							\
    CONCHECK_DEVICE (dev);				\
    if (!(DEVICEP (dev)					\
          && DEVICE_PRINTER_P (XDEVICE (dev))))		\
      wrong_type_argument (Qprinter, dev);		\
  } while (0)

/* #### These should be in the device-*.h files but there are
   too many places where the abstraction is broken.  Need to
   fix. */

#define DEVICE_X_P(dev) CONSOLE_TYPESYM_X_P (DEVICE_TYPE (dev))
#define CHECK_X_DEVICE(z) CHECK_DEVICE_TYPE (z, x)
#define CONCHECK_X_DEVICE(z) CONCHECK_DEVICE_TYPE (z, x)

#define DEVICE_GTK_P(dev) CONSOLE_TYPESYM_GTK_P (DEVICE_TYPE (dev))
#define CHECK_GTK_DEVICE(z) CHECK_DEVICE_TYPE (z, gtk)
#define CONCHECK_GTK_DEVICE(z) CONCHECK_DEVICE_TYPE (z, gtk)

#define DEVICE_MSWINDOWS_P(dev) CONSOLE_TYPESYM_MSWINDOWS_P (DEVICE_TYPE (dev))
#define CHECK_MSWINDOWS_DEVICE(z) CHECK_DEVICE_TYPE (z, mswindows)
#define CONCHECK_MSWINDOWS_DEVICE(z) CONCHECK_DEVICE_TYPE (z, mswindows)

#define DEVICE_TTY_P(dev) CONSOLE_TYPESYM_TTY_P (DEVICE_TYPE (dev))
#define CHECK_TTY_DEVICE(z) CHECK_DEVICE_TYPE (z, tty)
#define CONCHECK_TTY_DEVICE(z) CONCHECK_DEVICE_TYPE (z, tty)

#define DEVICE_STREAM_P(dev) CONSOLE_TYPESYM_STREAM_P (DEVICE_TYPE (dev))
#define CHECK_STREAM_DEVICE(z) CHECK_DEVICE_TYPE (z, stream)
#define CONCHECK_STREAM_DEVICE(z) CONCHECK_DEVICE_TYPE (z, stream)

#define DEVICE_WIN_P(dev) CONSOLE_TYPESYM_WIN_P (DEVICE_TYPE (dev))

EXFUN (Fdevice_console, 1);
EXFUN (Fdevice_name, 1);
EXFUN (Ffind_device, 2);
EXFUN (Fmake_device, 3);
EXFUN (Fselected_device, 1);

extern Lisp_Object Qcreate_device_hook, Qdelete_device_hook, Qgrayscale;
extern Lisp_Object Qinit_post_tty_win, Qmono, Vdefault_x_device, Vdefault_gtk_device;
extern Lisp_Object Vdevice_class_list;

int valid_device_class_p (Lisp_Object class);

#define DEVICE_LIVE_P(d) (!EQ (DEVICE_TYPE (d), Qdead))

#define DEVICE_REDISPLAY_INFO(d) ((d)->redisplay_info)

#define DEVICE_NAME(d) ((d)->name)
#define DEVICE_CLASS(d) ((d)->device_class)
/* Catch people attempting to set this. */
#define DEVICE_SELECTED_FRAME(d) NON_LVALUE ((d)->selected_frame)
#define DEVICE_FRAME_WITH_FOCUS_REAL(d) ((d)->frame_with_focus_real)
#define DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS(d) ((d)->frame_with_focus_for_hooks)
#define DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS(d)			\
  ((d)->frame_that_ought_to_have_focus)
#define DEVICE_USER_DEFINED_TAGS(d) ((d)->user_defined_tags)
#define DEVICE_FRAME_LIST(d) ((d)->frame_list)
#define DEVICE_CONNECTION(d) ((d)->connection)
#define DEVICE_CANON_CONNECTION(d) ((d)->canon_connection)
#define DEVICE_CONSOLE(d) ((d)->console)
#define DEVICE_BAUD_RATE(d) ((d)->baud_rate)
#define DEVICE_INFD(d) ((d)->infd)
#define DEVICE_OUTFD(d) ((d)->outfd)
#define DEVICE_OLD_FCNTL_OWNER(d) ((d)->old_fcntl_owner)
#define DEVICE_ON_CONSOLE_P(d) ((d)->on_console_p)
#define DEVICE_CONNECTED_TO_NAS_P(d) ((d)->connected_to_nas_p)

#define LOCK_DEVICE(d) ((void) ((d)->locked = 1))
#define UNLOCK_DEVICE(d) ((void) ((d)->locked = 0))

#define INVALIDATE_DEVICE_PIXEL_TO_GLYPH_CACHE(d)			\
  ((void) ((d)->pixel_to_glyph_cache.valid = 0))

#define INVALIDATE_PIXEL_TO_GLYPH_CACHE do {					\
  Lisp_Object IPTGC_devcons, IPTGC_concons;					\
  DEVICE_LOOP_NO_BREAK (IPTGC_devcons, IPTGC_concons)				\
    INVALIDATE_DEVICE_PIXEL_TO_GLYPH_CACHE (XDEVICE (XCAR (IPTGC_devcons)));	\
} while (0)

#define MARK_DEVICE_FACES_CHANGED(d)			\
  ((void) (faces_changed = (d)->faces_changed = 1))

#define MARK_DEVICE_GLYPHS_CHANGED(d)			\
  ((void) (glyphs_changed = (d)->glyphs_changed = 1))

#define MARK_DEVICE_SUBWINDOWS_CHANGED(d)			\
  ((void) (subwindows_changed = (d)->subwindows_changed = 1))

#define MARK_DEVICE_SUBWINDOWS_STATE_CHANGED(d)		\
  ((void) (subwindows_state_changed = (d)->subwindows_state_changed = 1))

#define MARK_DEVICE_TOOLBARS_CHANGED(d)			\
  ((void) (toolbar_changed = (d)->toolbar_changed = 1))

#define MARK_DEVICE_GUTTERS_CHANGED(d)		\
  ((void) (gutter_changed = (d)->gutter_changed = 1))

#define MARK_DEVICE_SIZE_CHANGED(d)			\
  ((void) (size_changed = (d)->size_changed = 1))

#define MARK_DEVICE_FRAMES_FACES_CHANGED(d) do {	\
  struct device *mdffc_d = (d);				\
  Lisp_Object frmcons;					\
  DEVICE_FRAME_LOOP (frmcons, mdffc_d)			\
    XFRAME (XCAR (frmcons))->faces_changed = 1;		\
  MARK_DEVICE_FACES_CHANGED (mdffc_d);			\
} while (0)

#define MARK_DEVICE_FRAMES_GLYPHS_CHANGED(d) do {	\
  struct device *mdffc_d = (d);				\
  Lisp_Object frmcons;					\
  DEVICE_FRAME_LOOP (frmcons, mdffc_d)			\
    XFRAME (XCAR (frmcons))->glyphs_changed = 1;		\
  MARK_DEVICE_GLYPHS_CHANGED (mdffc_d);		\
} while (0)

#define MARK_DEVICE_FRAME_CHANGED(d)			\
  ((void) (frame_changed = (d)->frame_changed = 1))

#define MARK_DEVICE_WINDOWS_CHANGED(d)			\
  ((void) (windows_changed = (d)->windows_changed = 1))

#define MARK_DEVICE_WINDOWS_STRUCTURE_CHANGED(d)	\
  ((void) (windows_structure_changed = (d)->windows_structure_changed = 1))

/* #### unify this with DOMAIN_DEVICE once the latter has image instances
   expunged from it. */
/* This turns out to be used heavily so we make it a macro to make it
   inline.  Also, the majority of the time the object will turn out to
   be a window so we move it from being checked last to being checked
   first. */
#define DFW_DEVICE(obj)					\
   (WINDOWP (obj) ? WINDOW_DEVICE (XWINDOW (obj))	\
 : (FRAMEP  (obj) ? FRAME_DEVICE (XFRAME (obj))		\
 : (DEVICEP (obj) ? obj					\
 : Qnil)))

/* NO_BREAK means that "break" doesn't do what you think it does!
   Use goto instead.  "continue" is OK, though. */
#define DEVICE_LOOP_NO_BREAK(devcons, concons)			\
  CONSOLE_LOOP (concons)					\
    CONSOLE_DEVICE_LOOP (devcons, XCONSOLE (XCAR (concons)))
#define DEVICE_FRAME_LOOP(frmcons, d) \
  LIST_LOOP (frmcons, DEVICE_FRAME_LIST (d))
#define CONSOLE_FRAME_LOOP_NO_BREAK(frmcons, devcons, con) \
  CONSOLE_DEVICE_LOOP (devcons, con) 			   \
    DEVICE_FRAME_LOOP (frmcons, XDEVICE (XCAR (devcons)))

void select_device_1 (Lisp_Object);
struct device *decode_device (Lisp_Object);
void handle_asynch_device_change (void);
void call_critical_lisp_code (struct device *d, Lisp_Object function,
			      Lisp_Object object);
void delete_device_internal (struct device *d, int force,
			     int called_from_delete_console,
			     int from_io_error);
void io_error_delete_device (Lisp_Object device);
Lisp_Object find_nonminibuffer_frame_not_on_device (Lisp_Object device);
void set_device_selected_frame (struct device *d, Lisp_Object frame);
Lisp_Object domain_device_type (Lisp_Object domain);
int window_system_pixelated_geometry (Lisp_Object domain);

#endif /* INCLUDED_device_h_ */