gtk/gdk/gdkdisplaymanager.c

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2000 Red Hat, Inc.
*
* 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 "gdkdisplay.h"
#include "gdkdisplaymanager.h"
#include "gdkinternals.h"
#include "gdkmarshalers.h"
#include "gdkintl.h"
struct _GdkDisplayManager
{
GObject parent_instance;
};
enum {
PROP_0,
PROP_DEFAULT_DISPLAY
};
enum {
DISPLAY_OPENED,
LAST_SIGNAL
};
static void gdk_display_manager_class_init (GdkDisplayManagerClass *klass);
static void gdk_display_manager_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gdk_display_manager_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static guint signals[LAST_SIGNAL] = { 0 };
GdkDisplay *default_display = NULL;
GType
gdk_display_manager_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkDisplayManagerClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_display_manager_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkDisplayManager),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GdkDisplayManager",
&object_info, 0);
}
return object_type;
}
static void
gdk_display_manager_class_init (GdkDisplayManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gdk_display_manager_set_property;
object_class->get_property = gdk_display_manager_get_property;
signals[DISPLAY_OPENED] =
g_signal_new ("display_opened",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkDisplayManagerClass, display_opened),
NULL, NULL,
gdk_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
GDK_TYPE_DISPLAY);
g_object_class_install_property (object_class,
PROP_DEFAULT_DISPLAY,
g_param_spec_object ("default-display",
_("Default Display"),
_("The default display for GDK"),
GDK_TYPE_DISPLAY,
G_PARAM_READWRITE));
}
static void
gdk_display_manager_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_DEFAULT_DISPLAY:
default_display = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gdk_display_manager_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_DEFAULT_DISPLAY:
g_value_set_object (value, default_display);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gdk_display_manager_get:
* @returns: the singleton #GdkDisplayManager object.
*
* Returns the global #GdkDisplayManager singleton; gdk_parse_pargs(),
* gdk_init(), or gdk_init_check() must have been called first.
**/
GdkDisplayManager*
gdk_display_manager_get (void)
{
static GdkDisplayManager *display_manager = NULL;
if (!display_manager)
display_manager = g_object_new (GDK_TYPE_DISPLAY_MANAGER, NULL);
return display_manager;
}
/**
* gdk_display_manager_get_default_display:
* @display_manager: a #GdkDisplayManager
*
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* Gets the default #GdkDisplay.
*
* Returns: a #GdkDisplay, or %NULL if there is no default
* display.
*/
GdkDisplay *
gdk_display_manager_get_default_display (GdkDisplayManager *display_manager)
{
return default_display;
}
/**
* gdk_display_get_default:
*
* Gets the default #GdkDisplay. This is a convenience
* function for:
* <programlisting>
* gdk_display_manager_get_default_display (gdk_display_manager_get ())
* </programlisting>
*
* Returns: a #GdkDisplay, or %NULL if there is no default
* display.
*/
GdkDisplay *
gdk_display_get_default (void)
{
return default_display;
}
/**
* gdk_screen_get_default:
*
* Gets the default screen for the default display. (See
* gdk_display_get_default ()).
*
* Returns: a #GdkScreen, or %NULL if there is no default display.
*/
GdkScreen *
gdk_screen_get_default (void)
{
if (default_display)
return gdk_display_get_default_screen (default_display);
else
return NULL;
}
/**
* gdk_display_manager_set_default_display:
* @display_manager: a #GdkDisplayManager
* @display: a #GdkDisplay
*
* Sets @display as the default display.
**/
void
gdk_display_manager_set_default_display (GdkDisplayManager *display_manager,
GdkDisplay *display)
{
default_display = display;
_gdk_windowing_set_default_display (display);
g_object_notify (G_OBJECT (display_manager), "default_display");
}
/**
* gdk_display_manager_list_displays:
* @display_manager: a #GdkDisplayManager
*
* List all currently open displays.
*
* Return value: a newly allocated #GSList of #GdkDisplay objects.
* Free this list with g_slist_free() when you are done with it.
**/
GSList *
gdk_display_manager_list_displays (GdkDisplayManager *display_manager)
{
return g_slist_copy (_gdk_displays);
}
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