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/* Functions for the X window system.
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   Copyright (C) 1989, 1992, 1993 Free Software Foundation.
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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
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the Free Software Foundation; either version 2, or (at your option)
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any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* Completely rewritten by Richard Stallman.  */

/* Rewritten for X11 by Joseph Arceneaux */

#if 0
#include <stdio.h>
#endif
#include <signal.h>
#include "config.h"
#include "lisp.h"
#include "xterm.h"
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#include "frame.h"
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#include "window.h"
#include "buffer.h"
#include "dispextern.h"
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#include "keyboard.h"
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#include "blockinput.h"
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#ifdef HAVE_X_WINDOWS
extern void abort ();

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#ifndef VMS
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#if 1 /* Used to be #ifdef EMACS_BITMAP_FILES, but this should always work.  */
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#include "bitmaps/gray.xbm"
#else
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#include <X11/bitmaps/gray>
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#endif
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#else
#include "[.bitmaps]gray.xbm"
#endif
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#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))

#ifdef HAVE_X11
/* X Resource data base */
static XrmDatabase xrdb;

/* The class of this X application.  */
#define EMACS_CLASS "Emacs"

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#ifdef HAVE_X11R4
#define MAXREQUEST(dpy) (XMaxRequestSize (dpy))
#else
#define MAXREQUEST(dpy) ((dpy)->max_request_size)
#endif

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/* The name we're using in resource queries.  */
Lisp_Object Vx_resource_name;
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/* Title name and application name for X stuff. */
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extern char *x_id_name;
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/* The background and shape of the mouse pointer, and shape when not
   over text or in the modeline. */
Lisp_Object Vx_pointer_shape, Vx_nontext_pointer_shape, Vx_mode_pointer_shape;

/* Color of chars displayed in cursor box. */
Lisp_Object Vx_cursor_fore_pixel;

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/* The screen being used.  */
static Screen *x_screen;

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/* The X Visual we are using for X windows (the default) */
Visual *screen_visual;

/* Height of this X screen in pixels. */
int x_screen_height;

/* Width of this X screen in pixels. */
int x_screen_width;

/* Number of planes for this screen. */
int x_screen_planes;

/* Non nil if no window manager is in use. */
Lisp_Object Vx_no_window_manager;

/* `t' if a mouse button is depressed. */

Lisp_Object Vmouse_depressed;

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extern unsigned int x_mouse_x, x_mouse_y, x_mouse_grabbed;

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/* Atom for indicating window state to the window manager. */
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extern Atom Xatom_wm_change_state;
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/* Communication with window managers. */
extern Atom Xatom_wm_protocols;

/* Kinds of protocol things we may receive. */
extern Atom Xatom_wm_take_focus;
extern Atom Xatom_wm_save_yourself;
extern Atom Xatom_wm_delete_window;

/* Other WM communication */
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extern Atom Xatom_wm_configure_denied; /* When our config request is denied */
extern Atom Xatom_wm_window_moved;     /* When the WM moves us. */
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#else	/* X10 */

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/* Default size of an Emacs window.  */
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static char *default_window = "=80x24+0+0";

#define MAXICID 80
char iconidentity[MAXICID];
#define ICONTAG "emacs@"
char minibuffer_iconidentity[MAXICID];
#define MINIBUFFER_ICONTAG "minibuffer@"

#endif /* X10 */

/* The last 23 bits of the timestamp of the last mouse button event. */
Time mouse_timestamp;

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/* Evaluate this expression to rebuild the section of syms_of_xfns
   that initializes and staticpros the symbols declared below.  Note
   that Emacs 18 has a bug that keeps C-x C-e from being able to
   evaluate this expression.

(progn
  ;; Accumulate a list of the symbols we want to initialize from the
  ;; declarations at the top of the file.
  (goto-char (point-min))
  (search-forward "/\*&&& symbols declared here &&&*\/\n")
  (let (symbol-list)
    (while (looking-at "Lisp_Object \\(Q[a-z_]+\\)")
      (setq symbol-list
	    (cons (buffer-substring (match-beginning 1) (match-end 1))
		  symbol-list))
      (forward-line 1))
    (setq symbol-list (nreverse symbol-list))
    ;; Delete the section of syms_of_... where we initialize the symbols.
    (search-forward "\n  /\*&&& init symbols here &&&*\/\n")
    (let ((start (point)))
      (while (looking-at "^  Q")
	(forward-line 2))
      (kill-region start (point)))
    ;; Write a new symbol initialization section.
    (while symbol-list
      (insert (format "  %s = intern (\"" (car symbol-list)))
      (let ((start (point)))
	(insert (substring (car symbol-list) 1))
	(subst-char-in-region start (point) ?_ ?-))
      (insert (format "\");\n  staticpro (&%s);\n" (car symbol-list)))
      (setq symbol-list (cdr symbol-list)))))

  */        

/*&&& symbols declared here &&&*/
Lisp_Object Qauto_raise;
Lisp_Object Qauto_lower;
Lisp_Object Qbackground_color;
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Lisp_Object Qbar;
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Lisp_Object Qborder_color;
Lisp_Object Qborder_width;
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Lisp_Object Qbox;
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Lisp_Object Qcursor_color;
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Lisp_Object Qcursor_type;
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Lisp_Object Qfont;
Lisp_Object Qforeground_color;
Lisp_Object Qgeometry;
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/* Lisp_Object Qicon; */
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Lisp_Object Qicon_left;
Lisp_Object Qicon_top;
Lisp_Object Qicon_type;
Lisp_Object Qinternal_border_width;
Lisp_Object Qleft;
Lisp_Object Qmouse_color;
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Lisp_Object Qnone;
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Lisp_Object Qparent_id;
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Lisp_Object Qsuppress_icon;
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Lisp_Object Qtop;
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Lisp_Object Qundefined_color;
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Lisp_Object Qvertical_scroll_bars;
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Lisp_Object Qvisibility;
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Lisp_Object Qwindow_id;
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Lisp_Object Qx_frame_parameter;
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/* The below are defined in frame.c. */
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extern Lisp_Object Qheight, Qminibuffer, Qname, Qonly, Qwidth;
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extern Lisp_Object Qunsplittable, Qmenu_bar_lines;
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extern Lisp_Object Vwindow_system_version;


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/* Error if we are not connected to X.  */
static void
check_x ()
{
  if (x_current_display == 0)
    error ("X windows are not in use or not initialized");
}

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/* Return the Emacs frame-object corresponding to an X window.
   It could be the frame's main window or an icon window.  */
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/* This function can be called during GC, so use XGCTYPE.  */

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struct frame *
x_window_to_frame (wdesc)
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     int wdesc;
{
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  Lisp_Object tail, frame;
  struct frame *f;
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  for (tail = Vframe_list; XGCTYPE (tail) == Lisp_Cons;
       tail = XCONS (tail)->cdr)
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    {
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      frame = XCONS (tail)->car;
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      if (XGCTYPE (frame) != Lisp_Frame)
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        continue;
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      f = XFRAME (frame);
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      if (FRAME_X_WINDOW (f) == wdesc
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          || f->display.x->icon_desc == wdesc)
        return f;
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    }
  return 0;
}


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/* Connect the frame-parameter names for X frames
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   to the ways of passing the parameter values to the window system.

   The name of a parameter, as a Lisp symbol,
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   has an `x-frame-parameter' property which is an integer in Lisp
   but can be interpreted as an `enum x_frame_parm' in C.  */
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enum x_frame_parm
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{
  X_PARM_FOREGROUND_COLOR,
  X_PARM_BACKGROUND_COLOR,
  X_PARM_MOUSE_COLOR,
  X_PARM_CURSOR_COLOR,
  X_PARM_BORDER_COLOR,
  X_PARM_ICON_TYPE,
  X_PARM_FONT,
  X_PARM_BORDER_WIDTH,
  X_PARM_INTERNAL_BORDER_WIDTH,
  X_PARM_NAME,
  X_PARM_AUTORAISE,
  X_PARM_AUTOLOWER,
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  X_PARM_VERT_SCROLL_BAR,
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  X_PARM_VISIBILITY,
  X_PARM_MENU_BAR_LINES
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};


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struct x_frame_parm_table
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{
  char *name;
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  void (*setter)( /* struct frame *frame, Lisp_Object val, oldval */ );
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};

void x_set_foreground_color ();
void x_set_background_color ();
void x_set_mouse_color ();
void x_set_cursor_color ();
void x_set_border_color ();
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void x_set_cursor_type ();
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void x_set_icon_type ();
void x_set_font ();
void x_set_border_width ();
void x_set_internal_border_width ();
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void x_explicitly_set_name ();
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void x_set_autoraise ();
void x_set_autolower ();
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void x_set_vertical_scroll_bars ();
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void x_set_visibility ();
void x_set_menu_bar_lines ();
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static struct x_frame_parm_table x_frame_parms[] =
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{
  "foreground-color", x_set_foreground_color,
  "background-color", x_set_background_color,
  "mouse-color", x_set_mouse_color,
  "cursor-color", x_set_cursor_color,
  "border-color", x_set_border_color,
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  "cursor-type", x_set_cursor_type,
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  "icon-type", x_set_icon_type,
  "font", x_set_font,
  "border-width", x_set_border_width,
  "internal-border-width", x_set_internal_border_width,
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  "name", x_explicitly_set_name,
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  "auto-raise", x_set_autoraise,
  "auto-lower", x_set_autolower,
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  "vertical-scroll-bars", x_set_vertical_scroll_bars,
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  "visibility", x_set_visibility,
  "menu-bar-lines", x_set_menu_bar_lines,
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};

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/* Attach the `x-frame-parameter' properties to
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   the Lisp symbol names of parameters relevant to X.  */

init_x_parm_symbols ()
{
  int i;

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  for (i = 0; i < sizeof (x_frame_parms) / sizeof (x_frame_parms[0]); i++)
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    Fput (intern (x_frame_parms[i].name), Qx_frame_parameter,
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	  make_number (i));
}

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/* Change the parameters of FRAME as specified by ALIST.
   If a parameter is not specially recognized, do nothing;
   otherwise call the `x_set_...' function for that parameter.  */
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void
x_set_frame_parameters (f, alist)
     FRAME_PTR f;
     Lisp_Object alist;
{
  Lisp_Object tail;

  /* If both of these parameters are present, it's more efficient to
     set them both at once.  So we wait until we've looked at the
     entire list before we set them.  */
  Lisp_Object width, height;

  /* Same here.  */
  Lisp_Object left, top;

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  /* Record in these vectors all the parms specified.  */
  Lisp_Object *parms;
  Lisp_Object *values;
  int i;
  
  i = 0;
  for (tail = alist; CONSP (tail); tail = Fcdr (tail))
    i++;

  parms = (Lisp_Object *) alloca (i * sizeof (Lisp_Object));
  values = (Lisp_Object *) alloca (i * sizeof (Lisp_Object));
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  /* Extract parm names and values into those vectors.  */

  i = 0;
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  for (tail = alist; CONSP (tail); tail = Fcdr (tail))
    {
      Lisp_Object elt, prop, val;

      elt = Fcar (tail);
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      parms[i] = Fcar (elt);
      values[i] = Fcdr (elt);
      i++;
    }

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  width = height = top = left = Qunbound;
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  /* Now process them in reverse of specified order.  */
  for (i--; i >= 0; i--)
    {
      Lisp_Object prop, val;

      prop = parms[i];
      val = values[i];

      if (EQ (prop, Qwidth))
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	width = val;
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      else if (EQ (prop, Qheight))
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	height = val;
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      else if (EQ (prop, Qtop))
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	top = val;
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      else if (EQ (prop, Qleft))
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	left = val;
      else
	{
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	  register Lisp_Object param_index = Fget (prop, Qx_frame_parameter);
	  register Lisp_Object old_value = get_frame_param (f, prop);

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	  store_frame_param (f, prop, val);
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	  if (XTYPE (param_index) == Lisp_Int
	      && XINT (param_index) >= 0
	      && (XINT (param_index)
		  < sizeof (x_frame_parms)/sizeof (x_frame_parms[0])))
	    (*x_frame_parms[XINT (param_index)].setter)(f, val, old_value);
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	}
    }

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  /* Don't die if just one of these was set.  */
  if (EQ (left, Qunbound))
    XSET (left, Lisp_Int, f->display.x->left_pos);
  if (EQ (top, Qunbound))
    XSET (top, Lisp_Int, f->display.x->top_pos);

  /* Don't die if just one of these was set.  */
  if (EQ (width, Qunbound))
    XSET (width, Lisp_Int, FRAME_WIDTH (f));
  if (EQ (height, Qunbound))
    XSET (height, Lisp_Int, FRAME_HEIGHT (f));

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  /* Don't set these parameters these unless they've been explicitly
     specified.  The window might be mapped or resized while we're in
     this function, and we don't want to override that unless the lisp
     code has asked for it.

     Don't set these parameters unless they actually differ from the
     window's current parameters; the window may not actually exist
     yet.  */
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  {
    Lisp_Object frame;

    XSET (frame, Lisp_Frame, f);
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    if ((NUMBERP (width) && XINT (width) != FRAME_WIDTH (f))
	|| (NUMBERP (height) && XINT (height) != FRAME_HEIGHT (f)))
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      Fset_frame_size (frame, width, height);
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    if ((NUMBERP (left) && XINT (left) != f->display.x->left_pos)
	|| (NUMBERP (top) && XINT (top) != f->display.x->top_pos))
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      Fset_frame_position (frame, left, top);
  }
}
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/* Insert a description of internally-recorded parameters of frame X
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   into the parameter alist *ALISTPTR that is to be given to the user.
   Only parameters that are specific to the X window system
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   and whose values are not correctly recorded in the frame's
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   param_alist need to be considered here.  */

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x_report_frame_params (f, alistptr)
     struct frame *f;
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     Lisp_Object *alistptr;
{
  char buf[16];

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  store_in_alist (alistptr, Qleft, make_number (f->display.x->left_pos));
  store_in_alist (alistptr, Qtop, make_number (f->display.x->top_pos));
  store_in_alist (alistptr, Qborder_width,
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       	   make_number (f->display.x->border_width));
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  store_in_alist (alistptr, Qinternal_border_width,
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       	   make_number (f->display.x->internal_border_width));
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  sprintf (buf, "%d", FRAME_X_WINDOW (f));
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  store_in_alist (alistptr, Qwindow_id,
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       	   build_string (buf));
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  store_in_alist (alistptr, Qvisibility,
		  (FRAME_VISIBLE_P (f) ? Qt
		   : FRAME_ICONIFIED_P (f) ? Qicon : Qnil));
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}

/* Decide if color named COLOR is valid for the display
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   associated with the selected frame. */
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int
defined_color (color, color_def)
     char *color;
     Color *color_def;
{
  register int foo;
  Colormap screen_colormap;

  BLOCK_INPUT;
#ifdef HAVE_X11
  screen_colormap
    = DefaultColormap (x_current_display, XDefaultScreen (x_current_display));

  foo = XParseColor (x_current_display, screen_colormap,
       	      color, color_def)
    && XAllocColor (x_current_display, screen_colormap, color_def);
#else
  foo = XParseColor (color, color_def) && XGetHardwareColor (color_def);
#endif /* not HAVE_X11 */
  UNBLOCK_INPUT;

  if (foo)
    return 1;
  else
    return 0;
}

/* Given a string ARG naming a color, compute a pixel value from it
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   suitable for screen F.
   If F is not a color screen, return DEF (default) regardless of what
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   ARG says.  */

int
x_decode_color (arg, def)
     Lisp_Object arg;
     int def;
{
  Color cdef;

  CHECK_STRING (arg, 0);

  if (strcmp (XSTRING (arg)->data, "black") == 0)
    return BLACK_PIX_DEFAULT;
  else if (strcmp (XSTRING (arg)->data, "white") == 0)
    return WHITE_PIX_DEFAULT;

#ifdef HAVE_X11
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  if (x_screen_planes == 1)
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    return def;
#else
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  if (DISPLAY_CELLS == 1)
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    return def;
#endif

  if (defined_color (XSTRING (arg)->data, &cdef))
    return cdef.pixel;
  else
    Fsignal (Qundefined_color, Fcons (arg, Qnil));
}

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/* Functions called only from `x_set_frame_param'
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   to set individual parameters.

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   If FRAME_X_WINDOW (f) is 0,
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   the frame is being created and its X-window does not exist yet.
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   In that case, just record the parameter's new value
   in the standard place; do not attempt to change the window.  */

void
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x_set_foreground_color (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
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  f->display.x->foreground_pixel = x_decode_color (arg, BLACK_PIX_DEFAULT);
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  if (FRAME_X_WINDOW (f) != 0)
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    {
#ifdef HAVE_X11
      BLOCK_INPUT;
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      XSetForeground (x_current_display, f->display.x->normal_gc,
		      f->display.x->foreground_pixel);
      XSetBackground (x_current_display, f->display.x->reverse_gc,
		      f->display.x->foreground_pixel);
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      UNBLOCK_INPUT;
#endif				/* HAVE_X11 */
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      recompute_basic_faces (f);
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      if (FRAME_VISIBLE_P (f))
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        redraw_frame (f);
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    }
}

void
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x_set_background_color (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  Pixmap temp;
  int mask;

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  f->display.x->background_pixel = x_decode_color (arg, WHITE_PIX_DEFAULT);
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  if (FRAME_X_WINDOW (f) != 0)
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    {
      BLOCK_INPUT;
#ifdef HAVE_X11
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      /* The main frame area. */
      XSetBackground (x_current_display, f->display.x->normal_gc,
		      f->display.x->background_pixel);
      XSetForeground (x_current_display, f->display.x->reverse_gc,
		      f->display.x->background_pixel);
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      XSetForeground (x_current_display, f->display.x->cursor_gc,
		      f->display.x->background_pixel);
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      XSetWindowBackground (x_current_display, FRAME_X_WINDOW (f),
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			    f->display.x->background_pixel);
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#else
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      temp = XMakeTile (f->display.x->background_pixel);
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      XChangeBackground (FRAME_X_WINDOW (f), temp);
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      XFreePixmap (temp);
#endif				/* not HAVE_X11 */
      UNBLOCK_INPUT;

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      recompute_basic_faces (f);

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      if (FRAME_VISIBLE_P (f))
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        redraw_frame (f);
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    }
}

void
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x_set_mouse_color (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  Cursor cursor, nontext_cursor, mode_cursor;
  int mask_color;

  if (!EQ (Qnil, arg))
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    f->display.x->mouse_pixel = x_decode_color (arg, BLACK_PIX_DEFAULT);
  mask_color = f->display.x->background_pixel;
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				/* No invisible pointers. */
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  if (mask_color == f->display.x->mouse_pixel
	&& mask_color == f->display.x->background_pixel)
    f->display.x->mouse_pixel = f->display.x->foreground_pixel;
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  BLOCK_INPUT;
#ifdef HAVE_X11
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  /* It's not okay to crash if the user selects a screwy cursor.  */
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  x_catch_errors ();

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  if (!EQ (Qnil, Vx_pointer_shape))
    {
      CHECK_NUMBER (Vx_pointer_shape, 0);
      cursor = XCreateFontCursor (x_current_display, XINT (Vx_pointer_shape));
    }
  else
    cursor = XCreateFontCursor (x_current_display, XC_xterm);
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  x_check_errors ("bad text pointer cursor: %s");
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  if (!EQ (Qnil, Vx_nontext_pointer_shape))
    {
      CHECK_NUMBER (Vx_nontext_pointer_shape, 0);
      nontext_cursor = XCreateFontCursor (x_current_display,
					  XINT (Vx_nontext_pointer_shape));
    }
  else
    nontext_cursor = XCreateFontCursor (x_current_display, XC_left_ptr);
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  x_check_errors ("bad nontext pointer cursor: %s");
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  if (!EQ (Qnil, Vx_mode_pointer_shape))
    {
      CHECK_NUMBER (Vx_mode_pointer_shape, 0);
      mode_cursor = XCreateFontCursor (x_current_display,
					  XINT (Vx_mode_pointer_shape));
    }
  else
    mode_cursor = XCreateFontCursor (x_current_display, XC_xterm);

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  /* Check and report errors with the above calls.  */
  x_check_errors ("can't set cursor shape: %s");
  x_uncatch_errors ();

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  {
    XColor fore_color, back_color;

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    fore_color.pixel = f->display.x->mouse_pixel;
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    back_color.pixel = mask_color;
    XQueryColor (x_current_display,
		 DefaultColormap (x_current_display,
				  DefaultScreen (x_current_display)),
		 &fore_color);
    XQueryColor (x_current_display,
		 DefaultColormap (x_current_display,
				  DefaultScreen (x_current_display)),
		 &back_color);
    XRecolorCursor (x_current_display, cursor,
		    &fore_color, &back_color);
    XRecolorCursor (x_current_display, nontext_cursor,
		    &fore_color, &back_color);
    XRecolorCursor (x_current_display, mode_cursor,
		    &fore_color, &back_color);
  }
#else /* X10 */
  cursor = XCreateCursor (16, 16, MouseCursor, MouseMask,
			  0, 0,
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			  f->display.x->mouse_pixel,
			  f->display.x->background_pixel,
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			  GXcopy);
#endif /* X10 */

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  if (FRAME_X_WINDOW (f) != 0)
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    {
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      XDefineCursor (XDISPLAY FRAME_X_WINDOW (f), cursor);
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    }

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  if (cursor != f->display.x->text_cursor && f->display.x->text_cursor != 0)
      XFreeCursor (XDISPLAY f->display.x->text_cursor);
  f->display.x->text_cursor = cursor;
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#ifdef HAVE_X11
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  if (nontext_cursor != f->display.x->nontext_cursor
      && f->display.x->nontext_cursor != 0)
      XFreeCursor (XDISPLAY f->display.x->nontext_cursor);
  f->display.x->nontext_cursor = nontext_cursor;

  if (mode_cursor != f->display.x->modeline_cursor
      && f->display.x->modeline_cursor != 0)
      XFreeCursor (XDISPLAY f->display.x->modeline_cursor);
  f->display.x->modeline_cursor = mode_cursor;
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#endif	/* HAVE_X11 */

  XFlushQueue ();
  UNBLOCK_INPUT;
}

void
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x_set_cursor_color (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  unsigned long fore_pixel;

  if (!EQ (Vx_cursor_fore_pixel, Qnil))
    fore_pixel = x_decode_color (Vx_cursor_fore_pixel, WHITE_PIX_DEFAULT);
  else
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    fore_pixel = f->display.x->background_pixel;
  f->display.x->cursor_pixel = x_decode_color (arg, BLACK_PIX_DEFAULT);
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  /* Make sure that the cursor color differs from the background color.  */
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  if (f->display.x->cursor_pixel == f->display.x->background_pixel)
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    {
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      f->display.x->cursor_pixel == f->display.x->mouse_pixel;
      if (f->display.x->cursor_pixel == fore_pixel)
	fore_pixel = f->display.x->background_pixel;
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    }
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  f->display.x->cursor_foreground_pixel = fore_pixel;
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  if (FRAME_X_WINDOW (f) != 0)
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    {
#ifdef HAVE_X11
      BLOCK_INPUT;
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      XSetBackground (x_current_display, f->display.x->cursor_gc,
		      f->display.x->cursor_pixel);
      XSetForeground (x_current_display, f->display.x->cursor_gc,
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		      fore_pixel);
      UNBLOCK_INPUT;
#endif /* HAVE_X11 */

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      if (FRAME_VISIBLE_P (f))
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	{
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	  x_display_cursor (f, 0);
	  x_display_cursor (f, 1);
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	}
    }
}

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/* Set the border-color of frame F to value described by ARG.
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   ARG can be a string naming a color.
   The border-color is used for the border that is drawn by the X server.
   Note that this does not fully take effect if done before
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   F has an x-window; it must be redone when the window is created.
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   Note: this is done in two routines because of the way X10 works.

   Note: under X11, this is normally the province of the window manager,
   and so emacs' border colors may be overridden. */

void
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x_set_border_color (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  unsigned char *str;
  int pix;

  CHECK_STRING (arg, 0);
  str = XSTRING (arg)->data;

#ifndef HAVE_X11
  if (!strcmp (str, "grey") || !strcmp (str, "Grey")
      || !strcmp (str, "gray") || !strcmp (str, "Gray"))
    pix = -1;
  else
#endif /* X10 */

    pix = x_decode_color (arg, BLACK_PIX_DEFAULT);

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  x_set_border_pixel (f, pix);
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}

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/* Set the border-color of frame F to pixel value PIX.
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   Note that this does not fully take effect if done before
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   F has an x-window.  */
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x_set_border_pixel (f, pix)
     struct frame *f;
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     int pix;
{
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  f->display.x->border_pixel = pix;
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  if (FRAME_X_WINDOW (f) != 0 && f->display.x->border_width > 0)
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    {
      Pixmap temp;
      int mask;

      BLOCK_INPUT;
#ifdef HAVE_X11
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      XSetWindowBorder (x_current_display, FRAME_X_WINDOW (f),
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       		 pix);
#else
      if (pix < 0)
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        temp = XMakePixmap ((Bitmap) XStoreBitmap (gray_width, gray_height,
						   gray_bits),
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       		     BLACK_PIX_DEFAULT, WHITE_PIX_DEFAULT);
      else
        temp = XMakeTile (pix);
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      XChangeBorder (FRAME_X_WINDOW (f), temp);
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      XFreePixmap (XDISPLAY temp);
#endif /* not HAVE_X11 */
      UNBLOCK_INPUT;

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      if (FRAME_VISIBLE_P (f))
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        redraw_frame (f);
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    }
}

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void
x_set_cursor_type (f, arg, oldval)
     FRAME_PTR f;
     Lisp_Object arg, oldval;
{
  if (EQ (arg, Qbar))
    FRAME_DESIRED_CURSOR (f) = bar_cursor;
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  else
#if 0
    if (EQ (arg, Qbox))
#endif
      FRAME_DESIRED_CURSOR (f) = filled_box_cursor;
  /* Error messages commented out because people have trouble fixing
     .Xdefaults with Emacs, when it has something bad in it.  */
#if 0
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  else
    error
      ("the `cursor-type' frame parameter should be either `bar' or `box'");
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#endif
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  /* Make sure the cursor gets redrawn.  This is overkill, but how
     often do people change cursor types?  */
  update_mode_lines++;
}

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void
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x_set_icon_type (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  Lisp_Object tem;
  int result;

  if (EQ (oldval, Qnil) == EQ (arg, Qnil))
    return;

  BLOCK_INPUT;
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  if (NILP (arg))
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    result = x_text_icon (f, 0);
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  else
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    result = x_bitmap_icon (f);
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  if (result)
    {
      UNBLOCK_INPUT;
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      error ("No icon window available.");
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    }

  /* If the window was unmapped (and its icon was mapped),
     the new icon is not mapped, so map the window in its stead.  */
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  if (FRAME_VISIBLE_P (f))
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    XMapWindow (XDISPLAY FRAME_X_WINDOW (f));
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  XFlushQueue ();
  UNBLOCK_INPUT;
}

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extern Lisp_Object x_new_font ();

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void
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x_set_font (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
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  Lisp_Object result;
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  CHECK_STRING (arg, 1);

  BLOCK_INPUT;
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  result = x_new_font (f, XSTRING (arg)->data);
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  UNBLOCK_INPUT;
  
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  if (EQ (result, Qnil))
    error ("Font \"%s\" is not defined", XSTRING (arg)->data);
  else if (EQ (result, Qt))
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    error ("the characters of the given font have varying widths");
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  else if (STRINGP (result))
    {
      recompute_basic_faces (f);
      store_frame_param (f, Qfont, result);
    }
  else
    abort ();
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}

void
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x_set_border_width (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  CHECK_NUMBER (arg, 0);

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  if (XINT (arg) == f->display.x->border_width)
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    return;

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  if (FRAME_X_WINDOW (f) != 0)
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    error ("Cannot change the border width of a window");

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  f->display.x->border_width = XINT (arg);
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}

void
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x_set_internal_border_width (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  int mask;
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  int old = f->display.x->internal_border_width;
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  CHECK_NUMBER (arg, 0);
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  f->display.x->internal_border_width = XINT (arg);
  if (f->display.x->internal_border_width < 0)
    f->display.x->internal_border_width = 0;
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  if (f->display.x->internal_border_width == old)
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    return;

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  if (FRAME_X_WINDOW (f) != 0)
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    {
      BLOCK_INPUT;
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      x_set_window_size (f, f->width, f->height);
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#if 0
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      x_set_resize_hint (f);
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#endif
      XFlushQueue ();
      UNBLOCK_INPUT;
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      SET_FRAME_GARBAGED (f);
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    }
}

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void
x_set_visibility (f, value, oldval)
     struct frame *f;
     Lisp_Object value, oldval;
{
  Lisp_Object frame;
  XSET (frame, Lisp_Frame, f);

  if (NILP (value))
    Fmake_frame_invisible (frame);
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  else if (EQ (value, Qicon))
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    Ficonify_frame (frame);
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  else
    Fmake_frame_visible (frame);
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}

static void
x_set_menu_bar_lines_1 (window, n)
  Lisp_Object window;
  int n;
{
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  struct window *w = XWINDOW (window);
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  XFASTINT (w->top) += n;
  XFASTINT (w->height) -= n;
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  /* Handle just the top child in a vertical split.  */
  if (!NILP (w->vchild))
    x_set_menu_bar_lines_1 (w->vchild, n);
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  /* Adjust all children in a horizontal split.  */
  for (window = w->hchild; !NILP (window); window = w->next)
    {
      w = XWINDOW (window);
      x_set_menu_bar_lines_1 (window, n);
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    }
}

void
x_set_menu_bar_lines (f, value, oldval)
     struct frame *f;
     Lisp_Object value, oldval;
{
  int nlines;
  int olines = FRAME_MENU_BAR_LINES (f);

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  /* Right now, menu bars don't work properly in minibuf-only frames;
     most of the commands try to apply themselves to the minibuffer
     frame itslef, and get an error because you can't switch buffers
     in or split the minibuffer window.  */
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  if (FRAME_MINIBUF_ONLY_P (f))
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    return;

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  if (XTYPE (value) == Lisp_Int)
    nlines = XINT (value);
  else
    nlines = 0;

  FRAME_MENU_BAR_LINES (f) = nlines;
  x_set_menu_bar_lines_1 (f->root_window, nlines - olines);
}

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/* Change the name of frame F to NAME.  If NAME is nil, set F's name to
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       x_id_name.

   If EXPLICIT is non-zero, that indicates that lisp code is setting the
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       name; if NAME is a string, set F's name to NAME and set
       F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
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   If EXPLICIT is zero, that indicates that Emacs redisplay code is
       suggesting a new name, which lisp code should override; if
       F->explicit_name is set, ignore the new name; otherwise, set it.  */

void
x_set_name (f, name, explicit)
     struct frame *f;
     Lisp_Object name;
     int explicit;
{
  /* Make sure that requests from lisp code override requests from 
     Emacs redisplay code.  */
  if (explicit)
    {
      /* If we're switching from explicit to implicit, we had better
	 update the mode lines and thereby update the title.  */
      if (f->explicit_name && NILP (name))
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	update_mode_lines = 1;
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      f->explicit_name = ! NILP (name);
    }
  else if (f->explicit_name)
    return;

  /* If NAME is nil, set the name to the x_id_name.  */
  if (NILP (name))
    name = build_string (x_id_name);
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  else
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    CHECK_STRING (name, 0);
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  /* Don't change the name if it's already NAME.  */
  if (! NILP (Fstring_equal (name, f->name)))
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    return;

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  if (FRAME_X_WINDOW (f))
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    {
      BLOCK_INPUT;
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#ifdef HAVE_X11R4
      {
	XTextProperty text;
	text.value = XSTRING (name)->data;
	text.encoding = XA_STRING;
	text.format = 8;
	text.nitems = XSTRING (name)->size;
	XSetWMName (x_current_display, FRAME_X_WINDOW (f), &text);
	XSetWMIconName (x_current_display, FRAME_X_WINDOW (f), &text);
      }
#else
      XSetIconName (XDISPLAY FRAME_X_WINDOW (f),
		    XSTRING (name)->data);
      XStoreName (XDISPLAY FRAME_X_WINDOW (f),
		  XSTRING (name)->data);
#endif

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      UNBLOCK_INPUT;
    }
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  f->name = name;
}

/* This function should be called when the user's lisp code has
   specified a name for the frame; the name will override any set by the
   redisplay code.  */
void
x_explicitly_set_name (f, arg, oldval)
     FRAME_PTR f;
     Lisp_Object arg, oldval;
{
  x_set_name (f, arg, 1);
}

/* This function should be called by Emacs redisplay code to set the
   name; names set this way will never override names set by the user's
   lisp code.  */
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void
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x_implicitly_set_name (f, arg, oldval)
     FRAME_PTR f;
     Lisp_Object arg, oldval;
{
  x_set_name (f, arg, 0);
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}

void
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x_set_autoraise (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
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  f->auto_raise = !EQ (Qnil, arg);
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}

void
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x_set_autolower (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
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  f->auto_lower = !EQ (Qnil, arg);
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}
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void
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x_set_vertical_scroll_bars (f, arg, oldval)
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     struct frame *f;
     Lisp_Object arg, oldval;
{
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  if (NILP (arg) != ! FRAME_HAS_VERTICAL_SCROLL_BARS (f))