/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#include "config.h"

#include <gdk/gdk.h>

#include "gtkinvisible.h"

#include "gtkprivate.h"

#include "gtkintl.h"

#include "gtkalias.h"

enum {

  PROP_0,

  PROP_SCREEN,

  LAST_ARG

};

static void gtk_invisible_destroy       (GtkObject         *object);

static void gtk_invisible_realize       (GtkWidget         *widget);

static void gtk_invisible_style_set     (GtkWidget         *widget,

					 GtkStyle          *previous_style);

static void gtk_invisible_show          (GtkWidget         *widget);

static void gtk_invisible_size_allocate (GtkWidget         *widget,

					 GtkAllocation     *allocation);

static void gtk_invisible_set_property  (GObject           *object,

					 guint              prop_id,

					 const GValue      *value,

					 GParamSpec        *pspec);

static void gtk_invisible_get_property  (GObject           *object,

					 guint              prop_id,

					 GValue		   *value,

					 GParamSpec        *pspec);

static GObject *gtk_invisible_constructor (GType                  type,

					   guint                  n_construct_properties,

					   GObjectConstructParam *construct_params);

G_DEFINE_TYPE (GtkInvisible, gtk_invisible, GTK_TYPE_WIDGET)

static void

gtk_invisible_class_init (GtkInvisibleClass *class)

{

  GObjectClass	 *gobject_class;

  GtkObjectClass *object_class;

  GtkWidgetClass *widget_class;

  widget_class = (GtkWidgetClass*) class;

  object_class = (GtkObjectClass*) class;

  gobject_class = (GObjectClass*) class;

  widget_class->realize = gtk_invisible_realize;

  widget_class->style_set = gtk_invisible_style_set;

  widget_class->show = gtk_invisible_show;

  widget_class->size_allocate = gtk_invisible_size_allocate;

  object_class->destroy = gtk_invisible_destroy;

  gobject_class->set_property = gtk_invisible_set_property;

  gobject_class->get_property = gtk_invisible_get_property;

  gobject_class->constructor = gtk_invisible_constructor;

  g_object_class_install_property (gobject_class,

				   PROP_SCREEN,

				   g_param_spec_object ("screen",

 							P_("Screen"),

 							P_("The screen where this window will be displayed"),

							GDK_TYPE_SCREEN,

 							GTK_PARAM_READWRITE));

}

static void

gtk_invisible_init (GtkInvisible *invisible)

{

  GdkColormap *colormap;

  gtk_widget_set_has_window (GTK_WIDGET (invisible), TRUE);

  _gtk_widget_set_is_toplevel (GTK_WIDGET (invisible), TRUE);

  g_object_ref_sink (invisible);

  invisible->has_user_ref_count = TRUE;

  invisible->screen = gdk_screen_get_default ();

  colormap = _gtk_widget_peek_colormap ();

  if (colormap)

    gtk_widget_set_colormap (GTK_WIDGET (invisible), colormap);

}

static void

gtk_invisible_destroy (GtkObject *object)

{

  GtkInvisible *invisible = GTK_INVISIBLE (object);

  if (invisible->has_user_ref_count)

    {

      invisible->has_user_ref_count = FALSE;

      g_object_unref (invisible);

    }

  GTK_OBJECT_CLASS (gtk_invisible_parent_class)->destroy (object);  

}

/**

 * gtk_invisible_new_for_screen:

 * @screen: a #GdkScreen which identifies on which

 *	    the new #GtkInvisible will be created.

 *

 * Creates a new #GtkInvisible object for a specified screen

 *

 * Return value: a newly created #GtkInvisible object

 *

 * Since: 2.2

 **/

GtkWidget* 

gtk_invisible_new_for_screen (GdkScreen *screen)

{

  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  return g_object_new (GTK_TYPE_INVISIBLE, "screen", screen, NULL);

}

/**

 * gtk_invisible_new:

 * 

 * Creates a new #GtkInvisible.

 * 

 * Return value: a new #GtkInvisible.

 **/

GtkWidget*

gtk_invisible_new (void)

{

  return g_object_new (GTK_TYPE_INVISIBLE, NULL);

}

/**

 * gtk_invisible_set_screen:

 * @invisible: a #GtkInvisible.

 * @screen: a #GdkScreen.

 *

 * Sets the #GdkScreen where the #GtkInvisible object will be displayed.

 *

 * Since: 2.2

 **/ 

void

gtk_invisible_set_screen (GtkInvisible *invisible,

			  GdkScreen    *screen)

{

  GtkWidget *widget;

  GdkScreen *previous_screen;

  gboolean was_realized;

  g_return_if_fail (GTK_IS_INVISIBLE (invisible));

  g_return_if_fail (GDK_IS_SCREEN (screen));

  if (screen == invisible->screen)

    return;

  widget = GTK_WIDGET (invisible);

  previous_screen = invisible->screen;

  was_realized = gtk_widget_get_realized (widget);

  if (was_realized)

    gtk_widget_unrealize (widget);

  invisible->screen = screen;

  if (screen != previous_screen)

    _gtk_widget_propagate_screen_changed (widget, previous_screen);

  g_object_notify (G_OBJECT (invisible), "screen");

  if (was_realized)

    gtk_widget_realize (widget);

}

/**

 * gtk_invisible_get_screen:

 * @invisible: a #GtkInvisible.

 *

 * Returns the #GdkScreen object associated with @invisible

 *

 * Return value: (transfer none): the associated #GdkScreen.

 *

 * Since: 2.2

 **/

GdkScreen *

gtk_invisible_get_screen (GtkInvisible *invisible)

{

  g_return_val_if_fail (GTK_IS_INVISIBLE (invisible), NULL);

  return invisible->screen;

}

static void

gtk_invisible_realize (GtkWidget *widget)

{

  GdkWindow *parent;

  GdkWindowAttr attributes;

  gint attributes_mask;

  gtk_widget_set_realized (widget, TRUE);

  parent = gtk_widget_get_parent_window (widget);

  if (parent == NULL)

    parent = gtk_widget_get_root_window (widget);

  attributes.x = -100;

  attributes.y = -100;

  attributes.width = 10;

  attributes.height = 10;

  attributes.window_type = GDK_WINDOW_TEMP;

  attributes.wclass = GDK_INPUT_ONLY;

  attributes.override_redirect = TRUE;

  attributes.event_mask = gtk_widget_get_events (widget);

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;

  widget->window = gdk_window_new (parent, &attributes, attributes_mask);

  gdk_window_set_user_data (widget->window, widget);

  widget->style = gtk_style_attach (widget->style, widget->window);

}

static void

gtk_invisible_style_set (GtkWidget *widget,

			 GtkStyle  *previous_style)

{

  /* Don't chain up to parent implementation */

}

static void

gtk_invisible_show (GtkWidget *widget)

{

  GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);

  gtk_widget_map (widget);

}

static void

gtk_invisible_size_allocate (GtkWidget     *widget,

			    GtkAllocation *allocation)

{

  widget->allocation = *allocation;

} 

static void 

gtk_invisible_set_property  (GObject      *object,

			     guint         prop_id,

			     const GValue *value,

			     GParamSpec   *pspec)

{

  GtkInvisible *invisible = GTK_INVISIBLE (object);

  switch (prop_id)

    {

    case PROP_SCREEN:

      gtk_invisible_set_screen (invisible, g_value_get_object (value));

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

static void 

gtk_invisible_get_property  (GObject      *object,

			     guint         prop_id,

			     GValue	  *value,

			     GParamSpec   *pspec)

{

  GtkInvisible *invisible = GTK_INVISIBLE (object);

  switch (prop_id)

    {

    case PROP_SCREEN:

      g_value_set_object (value, invisible->screen);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

/* We use a constructor here so that we can realize the invisible on

 * the correct screen after the "screen" property has been set

 */

static GObject*

gtk_invisible_constructor (GType                  type,

			   guint                  n_construct_properties,

			   GObjectConstructParam *construct_params)

{

  GObject *object;

  object = G_OBJECT_CLASS (gtk_invisible_parent_class)->constructor (type,

                                                                     n_construct_properties,

                                                                     construct_params);

  gtk_widget_realize (GTK_WIDGET (object));

  return object;

}

#define __GTK_INVISIBLE_C__

#include "gtkaliasdef.c"