gtk2/gdk/x11/gdkdisplaymanager-x11.c
Matthias Clasen bfcf9e471d Implement GInitable in GdkX11DisplayManager
Add GInitable implementation and fail the initialisation if it is not
possible to connect to the display server.
2013-03-23 00:48:25 -04:00

177 lines
5.3 KiB
C

/* GDK - The GIMP Drawing Kit
* gdkdisplaymanager-x11.c
*
* Copyright 2010 Red Hat, Inc.
*
* Author: Matthias clasen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gdkx11displaymanager.h"
#include "gdkdisplaymanagerprivate.h"
#include "gdkdisplay-x11.h"
#include "gdkprivate-x11.h"
#include "gdkinternals.h"
struct _GdkX11DisplayManager
{
GdkDisplayManager parent;
GdkDisplay *default_display;
GSList *displays;
gboolean init_failed;
};
struct _GdkX11DisplayManagerClass
{
GdkDisplayManagerClass parent_class;
};
static void g_initable_iface_init (GInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GdkX11DisplayManager, gdk_x11_display_manager, GDK_TYPE_DISPLAY_MANAGER,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, g_initable_iface_init))
static gboolean
gdk_x11_display_manager_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
Display *display;
/* check that a connection to the default display is possible */
display = XOpenDisplay (gdk_get_display_arg_name ());
if (!display)
{
GDK_X11_DISPLAY_MANAGER (initable)->init_failed = TRUE;
return FALSE;
}
XCloseDisplay (display);
return TRUE;
}
void
g_initable_iface_init (GInitableIface *iface)
{
iface->init = gdk_x11_display_manager_initable_init;
}
static GdkDisplay *
gdk_x11_display_manager_open_display (GdkDisplayManager *manager,
const gchar *name)
{
GdkX11DisplayManager *manager_x11 = GDK_X11_DISPLAY_MANAGER (manager);
GdkDisplay *display;
display = _gdk_x11_display_open (name);
if (display != NULL)
{
if (manager_x11->default_display == NULL)
gdk_display_manager_set_default_display (manager, display);
g_signal_emit_by_name (manager, "display-opened", display);
}
return display;
}
static GSList *
gdk_x11_display_manager_list_displays (GdkDisplayManager *manager)
{
return g_slist_copy (GDK_X11_DISPLAY_MANAGER (manager)->displays);
}
static GdkDisplay *
gdk_x11_display_manager_get_default_display (GdkDisplayManager *manager)
{
return GDK_X11_DISPLAY_MANAGER (manager)->default_display;
}
static void
gdk_x11_display_manager_set_default_display (GdkDisplayManager *manager,
GdkDisplay *display)
{
GDK_X11_DISPLAY_MANAGER (manager)->default_display = display;
if (display)
_gdk_x11_display_make_default (display);
}
static void
gdk_x11_display_manager_init (GdkX11DisplayManager *manager)
{
_gdk_x11_windowing_init ();
}
static void
gdk_x11_display_manager_finalize (GObject *object)
{
if (GDK_X11_DISPLAY_MANAGER (object)->init_failed == FALSE)
g_error ("A GdkX11DisplayManager object was finalized. This should not happen");
G_OBJECT_CLASS (gdk_x11_display_manager_parent_class)->finalize (object);
}
static void
gdk_x11_display_manager_class_init (GdkX11DisplayManagerClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GdkDisplayManagerClass *manager_class = GDK_DISPLAY_MANAGER_CLASS (class);
object_class->finalize = gdk_x11_display_manager_finalize;
manager_class->open_display = gdk_x11_display_manager_open_display;
manager_class->list_displays = gdk_x11_display_manager_list_displays;
manager_class->set_default_display = gdk_x11_display_manager_set_default_display;
manager_class->get_default_display = gdk_x11_display_manager_get_default_display;
manager_class->atom_intern = _gdk_x11_display_manager_atom_intern;
manager_class->get_atom_name = _gdk_x11_display_manager_get_atom_name;
manager_class->lookup_keyval = _gdk_x11_display_manager_lookup_keyval;
manager_class->get_keyval_name = _gdk_x11_display_manager_get_keyval_name;
manager_class->keyval_convert_case = _gdk_x11_display_manager_keyval_convert_case;
}
void
_gdk_x11_display_manager_add_display (GdkDisplayManager *manager,
GdkDisplay *display)
{
GdkX11DisplayManager *manager_x11 = GDK_X11_DISPLAY_MANAGER (manager);
manager_x11->displays = g_slist_prepend (manager_x11->displays, display);
}
void
_gdk_x11_display_manager_remove_display (GdkDisplayManager *manager,
GdkDisplay *display)
{
GdkX11DisplayManager *manager_x11 = GDK_X11_DISPLAY_MANAGER (manager);
manager_x11->displays = g_slist_remove (manager_x11->displays, display);
if (manager_x11->default_display == display)
{
if (manager_x11->displays)
gdk_display_manager_set_default_display (manager, manager_x11->displays->data);
else
gdk_display_manager_set_default_display (manager, NULL);
}
}