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/* Functions for the X window system.
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   Copyright (C) 1989, 1992 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"
#include "xscrollbar.h"
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#include "keyboard.h"
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#ifdef HAVE_X_WINDOWS
extern void abort ();

#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"

/* Title name and application name for X stuff. */
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extern char *x_id_name;
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extern Lisp_Object invocation_name;

/* 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;

/* If non-nil, use vertical bar cursor. */
Lisp_Object Vbar_cursor;

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

/* How many screens this X display has. */
int x_screen_count;

/* The vendor supporting this X server. */
Lisp_Object Vx_vendor;

/* The vendor's release number for this X server. */
int x_release;

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

/* Height of this X screen in millimeters. */
int x_screen_height_mm;

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

/* Width of this X screen in millimeters. */
int x_screen_width_mm;

/* Does this X screen do backing store? */
Lisp_Object Vx_backing_store;

/* Does this X screen do save-unders? */
int x_save_under;

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

/* X Visual type of this screen. */
Lisp_Object Vx_screen_visual;

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

static char *x_visual_strings[] =
  {
    "StaticGray",
    "GrayScale",
    "StaticColor",
    "PseudoColor",
    "TrueColor",
    "DirectColor"
  };

/* `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;
extern Lisp_Object unread_command_char;

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/* Atom for indicating window state to the window manager. */
Atom Xatom_wm_change_state;

/* When emacs became the selection owner. */
extern Time x_begin_selection_own;

/* The value of the current emacs selection. */
extern Lisp_Object Vx_selection_value;

/* Emacs' selection property identifier. */
extern Atom Xatom_emacs_selection;

/* Clipboard selection atom. */
extern Atom Xatom_clipboard_selection;

/* Clipboard atom. */
extern Atom Xatom_clipboard;

/* Atom for indicating incremental selection transfer. */
extern Atom Xatom_incremental;

/* Atom for indicating multiple selection request list */
extern Atom Xatom_multiple;

/* Atom for what targets emacs handles. */
extern Atom Xatom_targets;

/* Atom for indicating timstamp selection request */
extern Atom Xatom_timestamp;

/* Atom requesting we delete our selection. */
extern Atom Xatom_delete;

/* Selection magic. */
extern Atom Xatom_insert_selection;

/* Type of property for INSERT_SELECTION. */
extern Atom Xatom_pair;

/* More selection magic. */
extern Atom Xatom_insert_property;

/* Atom for indicating property type TEXT */
extern Atom Xatom_text;

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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 */

/* Default size of an Emacs window without scroll bar.  */
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;
Lisp_Object Qborder_color;
Lisp_Object Qborder_width;
Lisp_Object Qcursor_color;
Lisp_Object Qfont;
Lisp_Object Qforeground_color;
Lisp_Object Qgeometry;
Lisp_Object Qhorizontal_scroll_bar;
Lisp_Object Qicon_left;
Lisp_Object Qicon_top;
Lisp_Object Qicon_type;
Lisp_Object Qiconic_startup;
Lisp_Object Qinternal_border_width;
Lisp_Object Qleft;
Lisp_Object Qmouse_color;
Lisp_Object Qparent_id;
Lisp_Object Qsuppress_icon;
Lisp_Object Qsuppress_initial_map;
Lisp_Object Qtop;
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Lisp_Object Qundefined_color;
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Lisp_Object Qvertical_scroll_bar;
Lisp_Object Qwindow_id;
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Lisp_Object Qx_frame_parameter;
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/* The below are defined in frame.c. */
extern Lisp_Object Qheight, Qminibuffer, Qname, Qnone, Qonly, Qwidth;
extern Lisp_Object Qunsplittable;

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extern Lisp_Object Vwindow_system_version;

/* Mouse map for clicks in windows.  */
extern Lisp_Object Vglobal_mouse_map;

/* Points to table of defined typefaces.  */
struct face *x_face_table[MAX_FACES_AND_GLYPHS];

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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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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; CONSP (tail); tail = XCONS (tail)->cdr)
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    {
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      frame = XCONS (tail)->car;
      if (XTYPE (frame) != Lisp_Frame)
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        continue;
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      f = XFRAME (frame);
      if (f->display.x->window_desc == wdesc
          || f->display.x->icon_desc == wdesc)
        return f;
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    }
  return 0;
}

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/* Map an X window that implements a scroll bar to the Emacs frame it
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   belongs to.  Also store in *PART a symbol identifying which part of
   the scroll bar it is.  */

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struct frame *
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x_window_to_scrollbar (wdesc, part_ptr, prefix_ptr)
     int wdesc;
     Lisp_Object *part_ptr;
     enum scroll_bar_prefix *prefix_ptr;
{
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  Lisp_Object tail, frame;
  struct frame *f;
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  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
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    {
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      frame = XCONS (tail)->car;
      if (XTYPE (frame) != Lisp_Frame)
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        continue;

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      f = XFRAME (frame);
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      if (part_ptr == 0 && prefix_ptr == 0)
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        return f;
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      if (f->display.x->v_scrollbar == wdesc)
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        {
	  *part_ptr = Qvscrollbar_part;
          *prefix_ptr = VSCROLL_BAR_PREFIX;
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          return f;
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        }
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      else if (f->display.x->v_slider == wdesc)
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        {
          *part_ptr = Qvslider_part;
          *prefix_ptr = VSCROLL_SLIDER_PREFIX;
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          return f;
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        }
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      else if (f->display.x->v_thumbup == wdesc)
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        {
          *part_ptr = Qvthumbup_part;
          *prefix_ptr = VSCROLL_THUMBUP_PREFIX;
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          return f;
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        }
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      else if (f->display.x->v_thumbdown == wdesc)
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        {
          *part_ptr = Qvthumbdown_part;
          *prefix_ptr = VSCROLL_THUMBDOWN_PREFIX;
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          return f;
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        }
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      else if (f->display.x->h_scrollbar == wdesc)
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        {
          *part_ptr = Qhscrollbar_part;
          *prefix_ptr = HSCROLL_BAR_PREFIX;
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          return f;
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        }
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      else if (f->display.x->h_slider == wdesc)
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        {
          *part_ptr = Qhslider_part;
          *prefix_ptr = HSCROLL_SLIDER_PREFIX;
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          return f;
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        }
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      else if (f->display.x->h_thumbleft == wdesc)
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        {
          *part_ptr = Qhthumbleft_part;
          *prefix_ptr = HSCROLL_THUMBLEFT_PREFIX;
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          return f;
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        }
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      else if (f->display.x->h_thumbright == wdesc)
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        {
          *part_ptr = Qhthumbright_part;
          *prefix_ptr = HSCROLL_THUMBRIGHT_PREFIX;
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          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,
  X_PARM_VERT_SCROLLBAR,
  X_PARM_HORIZ_SCROLLBAR,
};


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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 ();
void x_set_icon_type ();
void x_set_font ();
void x_set_border_width ();
void x_set_internal_border_width ();
void x_set_name ();
void x_set_autoraise ();
void x_set_autolower ();
void x_set_vertical_scrollbar ();
void x_set_horizontal_scrollbar ();

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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,
  "icon-type", x_set_icon_type,
  "font", x_set_font,
  "border-width", x_set_border_width,
  "internal-border-width", x_set_internal_border_width,
  "name", x_set_name,
  "autoraise", x_set_autoraise,
  "autolower", x_set_autolower,
  "vertical-scrollbar", x_set_vertical_scrollbar,
  "horizontal-scrollbar", x_set_horizontal_scrollbar,
};

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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++)
    Fput (intern (x_frame_parms[i].name), Qx_frame_parameter,
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	  make_number (i));
}

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#if 1
/* 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.  */
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;
  
  XSET (width,  Lisp_Int, FRAME_WIDTH  (f));
  XSET (height, Lisp_Int, FRAME_HEIGHT (f));

  XSET (top, Lisp_Int, f->display.x->top_pos);
  XSET (left, Lisp_Int, f->display.x->left_pos);

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

      elt = Fcar (tail);
      prop = Fcar (elt);
      val = Fcdr (elt);

      if (EQ (prop, Qwidth))
	width = val;
      else if (EQ (prop, Qheight))
	height = val;
      else if (EQ (prop, Qtop))
	top = val;
      else if (EQ (prop, Qleft))
	left = val;
      else
	{
	  register Lisp_Object tem;
	  tem = Fget (prop, Qx_frame_parameter);
	  if (XTYPE (tem) == Lisp_Int
	      && XINT (tem) >= 0
	      && XINT (tem) < sizeof (x_frame_parms)/sizeof (x_frame_parms[0]))
	    (*x_frame_parms[XINT (tem)].setter)(f, val,
						get_frame_param (f, prop));
	  store_frame_param (f, prop, val);
	}
    }

  /* Don't call these unless they've changed; the window may not actually
     exist yet.  */
  {
    Lisp_Object frame;

    XSET (frame, Lisp_Frame, f);
    if (XINT (width) != FRAME_WIDTH (f)
	|| XINT (height) != FRAME_HEIGHT (f))
      Fset_frame_size (frame, width, height);
    if (XINT (left) != f->display.x->left_pos
	|| XINT (top) != f->display.x->top_pos)
      Fset_frame_position (frame, left, top);
  }
}
#else
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/* Report to X that a frame parameter of frame F is being set or changed.
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   PARAM is the symbol that says which parameter.
   VAL is the new value.
   OLDVAL is the old value.
   If the parameter is not specially recognized, do nothing;
   otherwise the `x_set_...' function for this parameter.  */

void
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x_set_frame_param (f, param, val, oldval)
     register struct frame *f;
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     Lisp_Object param;
     register Lisp_Object val;
     register Lisp_Object oldval;
{
  register Lisp_Object tem;
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  tem = Fget (param, Qx_frame_parameter);
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  if (XTYPE (tem) == Lisp_Int
      && XINT (tem) >= 0
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      && XINT (tem) < sizeof (x_frame_parms)/sizeof (x_frame_parms[0]))
    (*x_frame_parms[XINT (tem)].setter)(f, val, oldval);
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}
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#endif
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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));
  sprintf (buf, "%d", f->display.x->window_desc);
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  store_in_alist (alistptr, Qwindow_id,
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       	   build_string (buf));
}

/* 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 (XFASTINT (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 f->display.x->window_desc is 0,
   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);
  if (f->display.x->window_desc != 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);
      if (f->display.x->v_scrollbar)
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        {
          Pixmap  up_arrow_pixmap, down_arrow_pixmap, slider_pixmap;

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          XSetWindowBorder (x_current_display, f->display.x->v_scrollbar,
			    f->display.x->foreground_pixel);
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          slider_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 gray_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          up_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 up_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          down_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 down_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_thumbup,
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				      up_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_thumbdown,
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				      down_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_slider,
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				      slider_pixmap);

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          XClearWindow (XDISPLAY f->display.x->v_thumbup);
          XClearWindow (XDISPLAY f->display.x->v_thumbdown);
          XClearWindow (XDISPLAY f->display.x->v_slider);
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          XFreePixmap (x_current_display, down_arrow_pixmap);
          XFreePixmap (x_current_display, up_arrow_pixmap);
          XFreePixmap (x_current_display, slider_pixmap);
        }
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      if (f->display.x->h_scrollbar)
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        {
          Pixmap left_arrow_pixmap, right_arrow_pixmap, slider_pixmap;

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          XSetWindowBorder (x_current_display, f->display.x->h_scrollbar,
			    f->display.x->foreground_pixel);
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          slider_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 gray_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

          left_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 up_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          right_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 down_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_slider,
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				      slider_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_thumbleft,
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				      left_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_thumbright,
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				      right_arrow_pixmap);

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          XClearWindow (XDISPLAY f->display.x->h_thumbleft);
          XClearWindow (XDISPLAY f->display.x->h_thumbright);
          XClearWindow (XDISPLAY f->display.x->h_slider);
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          XFreePixmap (x_current_display, slider_pixmap);
          XFreePixmap (x_current_display, left_arrow_pixmap);
          XFreePixmap (x_current_display, right_arrow_pixmap);
        }
      UNBLOCK_INPUT;
#endif				/* HAVE_X11 */
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      if (f->visible)
        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 (f->display.x->window_desc != 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);
      XSetWindowBackground (x_current_display, f->display.x->window_desc,
			    f->display.x->background_pixel);
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      /* Scroll bars. */
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      if (f->display.x->v_scrollbar)
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        {
          Pixmap  up_arrow_pixmap, down_arrow_pixmap, slider_pixmap;

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          XSetWindowBackground (x_current_display, f->display.x->v_scrollbar,
				f->display.x->background_pixel);
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          slider_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 gray_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          up_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 up_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          down_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 down_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_thumbup,
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				      up_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_thumbdown,
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				      down_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->v_slider,
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				      slider_pixmap);

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          XClearWindow (XDISPLAY f->display.x->v_thumbup);
          XClearWindow (XDISPLAY f->display.x->v_thumbdown);
          XClearWindow (XDISPLAY f->display.x->v_slider);
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          XFreePixmap (x_current_display, down_arrow_pixmap);
          XFreePixmap (x_current_display, up_arrow_pixmap);
          XFreePixmap (x_current_display, slider_pixmap);
        }
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      if (f->display.x->h_scrollbar)
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        {
          Pixmap left_arrow_pixmap, right_arrow_pixmap, slider_pixmap;

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          XSetWindowBackground (x_current_display, f->display.x->h_scrollbar,
				f->display.x->background_pixel);
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          slider_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 gray_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

          left_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 up_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));
          right_arrow_pixmap =
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            XCreatePixmapFromBitmapData (XDISPLAY f->display.x->window_desc,
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					 down_arrow_bits, 16, 16,
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					 f->display.x->foreground_pixel,
					 f->display.x->background_pixel,
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					 DefaultDepth (x_current_display,
						       XDefaultScreen (x_current_display)));

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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_slider,
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				      slider_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_thumbleft,
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				      left_arrow_pixmap);
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          XSetWindowBackgroundPixmap (XDISPLAY f->display.x->h_thumbright,
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				      right_arrow_pixmap);

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          XClearWindow (XDISPLAY f->display.x->h_thumbleft);
          XClearWindow (XDISPLAY f->display.x->h_thumbright);
          XClearWindow (XDISPLAY f->display.x->h_slider);
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          XFreePixmap (x_current_display, slider_pixmap);
          XFreePixmap (x_current_display, left_arrow_pixmap);
          XFreePixmap (x_current_display, right_arrow_pixmap);
        }
#else
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      temp = XMakeTile (f->display.x->background_pixel);
      XChangeBackground (f->display.x->window_desc, temp);
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      XFreePixmap (temp);
#endif				/* not HAVE_X11 */
      UNBLOCK_INPUT;

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      if (f->visible)
        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
  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);

  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);

  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);

  {
    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 (f->display.x->window_desc != 0)
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    {
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      XDefineCursor (XDISPLAY f->display.x->window_desc, 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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  if (f->display.x->window_desc != 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 (f->visible)
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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 (f->display.x->window_desc != 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, f->display.x->window_desc,
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       		 pix);
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      if (f->display.x->h_scrollbar)
        XSetWindowBorder (x_current_display, f->display.x->h_slider,
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       		   pix);
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      if (f->display.x->v_scrollbar)
        XSetWindowBorder (x_current_display, f->display.x->v_slider,
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       		   pix);
#else
      if (pix < 0)
        temp = XMakePixmap ((Bitmap) XStoreBitmap (16, 16, gray_bits),
       		     BLACK_PIX_DEFAULT, WHITE_PIX_DEFAULT);
      else
        temp = XMakeTile (pix);
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      XChangeBorder (f->display.x->window_desc, temp);
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      XFreePixmap (XDISPLAY temp);
#endif /* not HAVE_X11 */
      UNBLOCK_INPUT;

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      if (f->visible)
        redraw_frame (f);
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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, 0);
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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 (f->visible)
    XMapWindow (XDISPLAY f->display.x->window_desc);
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  XFlushQueue ();
  UNBLOCK_INPUT;
}

void
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x_set_font (f, arg, oldval)
     struct frame *f;
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     Lisp_Object arg, oldval;
{
  unsigned char *name;
  int result;

  CHECK_STRING (arg, 1);
  name = XSTRING (arg)->data;

  BLOCK_INPUT;
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  result = x_new_font (f, name);
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  UNBLOCK_INPUT;
  
  if (result)
    error ("Font \"%s\" is not defined", name);
}

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 (f->display.x->window_desc != 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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