forked from AuroraMiddleware/gtk
355 lines
10 KiB
C
355 lines
10 KiB
C
/* 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 "gdkconfig.h"
|
|
#include "gdkdisplaymanagerprivate.h"
|
|
#include "gdkinternals.h"
|
|
#include "gdkmarshalers.h"
|
|
#include "gdkintl.h"
|
|
|
|
#ifdef GDK_WINDOWING_X11
|
|
#include "x11/gdkx.h"
|
|
#endif
|
|
|
|
|
|
/**
|
|
* SECTION:gdkdisplaymanager
|
|
* @Short_description: Maintains a list of all open GdkDisplays
|
|
* @Title: GdkDisplayManager
|
|
*
|
|
* The purpose of the #GdkDisplayManager singleton object is to offer
|
|
* notification when displays appear or disappear or the default display
|
|
* changes.
|
|
*/
|
|
|
|
|
|
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 };
|
|
|
|
G_DEFINE_TYPE (GdkDisplayManager, gdk_display_manager, G_TYPE_OBJECT)
|
|
|
|
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;
|
|
|
|
/**
|
|
* GdkDisplayManager::display-opened:
|
|
* @manager: the object on which the signal is emitted
|
|
* @display: the opened display
|
|
*
|
|
* The ::display-opened signal is emitted when a display is opened.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
signals[DISPLAY_OPENED] =
|
|
g_signal_new (g_intern_static_string ("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",
|
|
P_("Default Display"),
|
|
P_("The default display for GDK"),
|
|
GDK_TYPE_DISPLAY,
|
|
G_PARAM_READWRITE|G_PARAM_STATIC_NAME|
|
|
G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
|
|
}
|
|
|
|
static void
|
|
gdk_display_manager_init (GdkDisplayManager *manager)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gdk_display_manager_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
switch (prop_id)
|
|
{
|
|
case PROP_DEFAULT_DISPLAY:
|
|
gdk_display_manager_set_default_display (GDK_DISPLAY_MANAGER (object),
|
|
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,
|
|
gdk_display_manager_get_default_display (GDK_DISPLAY_MANAGER (object)));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_display_manager_get:
|
|
*
|
|
* Gets the singleton #GdkDisplayManager object.
|
|
*
|
|
* Returns: (transfer none): The global #GdkDisplayManager singleton;
|
|
* gdk_parse_pargs(), gdk_init(), or gdk_init_check() must have
|
|
* been called first.
|
|
*
|
|
* Since: 2.2
|
|
**/
|
|
GdkDisplayManager*
|
|
gdk_display_manager_get (void)
|
|
{
|
|
static GdkDisplayManager *manager = NULL;
|
|
|
|
if (!manager)
|
|
{
|
|
const gchar *backend;
|
|
|
|
backend = g_getenv ("GDK_BACKEND");
|
|
#ifdef GDK_WINDOWING_X11
|
|
if (backend == NULL || strcmp (backend, "x11") == 0)
|
|
manager = g_object_new (gdk_x11_display_manager_get_type (), NULL);
|
|
else
|
|
#endif
|
|
if (backend != NULL)
|
|
g_error ("Unsupported GDK backend: %s", backend);
|
|
else
|
|
g_error ("No GDK backend found");
|
|
}
|
|
|
|
return manager;
|
|
}
|
|
|
|
/**
|
|
* gdk_display_manager_get_default_display:
|
|
* @manager: a #GdkDisplayManager
|
|
*
|
|
* Gets the default #GdkDisplay.
|
|
*
|
|
* Returns: (transfer none): a #GdkDisplay, or %NULL
|
|
* if there is no default display.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
GdkDisplay *
|
|
gdk_display_manager_get_default_display (GdkDisplayManager *manager)
|
|
{
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->get_default_display (manager);
|
|
}
|
|
|
|
/**
|
|
* gdk_display_get_default:
|
|
*
|
|
* Gets the default #GdkDisplay. This is a convenience
|
|
* function for
|
|
* <literal>gdk_display_manager_get_default_display (gdk_display_manager_get ())</literal>.
|
|
*
|
|
* Returns: (transfer none): a #GdkDisplay, or %NULL if there is no default
|
|
* display.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
GdkDisplay *
|
|
gdk_display_get_default (void)
|
|
{
|
|
return gdk_display_manager_get_default_display (gdk_display_manager_get ());
|
|
}
|
|
|
|
/**
|
|
* gdk_screen_get_default:
|
|
*
|
|
* Gets the default screen for the default display. (See
|
|
* gdk_display_get_default ()).
|
|
*
|
|
* Returns: (transfer none): a #GdkScreen, or %NULL if there is no default display.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
GdkScreen *
|
|
gdk_screen_get_default (void)
|
|
{
|
|
GdkDisplay *default_display;
|
|
|
|
default_display = gdk_display_get_default ();
|
|
|
|
if (default_display)
|
|
return gdk_display_get_default_screen (default_display);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gdk_display_manager_set_default_display:
|
|
* @manager: a #GdkDisplayManager
|
|
* @display: a #GdkDisplay
|
|
*
|
|
* Sets @display as the default display.
|
|
*
|
|
* Since: 2.2
|
|
**/
|
|
void
|
|
gdk_display_manager_set_default_display (GdkDisplayManager *manager,
|
|
GdkDisplay *display)
|
|
{
|
|
GDK_DISPLAY_MANAGER_GET_CLASS (manager)->set_default_display (manager, display);
|
|
|
|
g_object_notify (G_OBJECT (manager), "default-display");
|
|
}
|
|
|
|
/**
|
|
* gdk_display_manager_list_displays:
|
|
* @manager: a #GdkDisplayManager
|
|
*
|
|
* List all currently open displays.
|
|
*
|
|
* Return value: (transfer container) (element-type GdkDisplay): a newly
|
|
* allocated #GSList of #GdkDisplay objects. Free with g_slist_free()
|
|
* when you are done with it.
|
|
*
|
|
* Since: 2.2
|
|
**/
|
|
GSList *
|
|
gdk_display_manager_list_displays (GdkDisplayManager *manager)
|
|
{
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->list_displays (manager);
|
|
}
|
|
|
|
GdkDisplay *
|
|
gdk_display_manager_open_display (GdkDisplayManager *manager,
|
|
const gchar *name)
|
|
{
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->open_display (manager, name);
|
|
}
|
|
|
|
/**
|
|
* gdk_atom_intern:
|
|
* @atom_name: a string.
|
|
* @only_if_exists: if %TRUE, GDK is allowed to not create a new atom, but
|
|
* just return %GDK_NONE if the requested atom doesn't already
|
|
* exists. Currently, the flag is ignored, since checking the
|
|
* existance of an atom is as expensive as creating it.
|
|
*
|
|
* Finds or creates an atom corresponding to a given string.
|
|
*
|
|
* Returns: the atom corresponding to @atom_name.
|
|
*/
|
|
GdkAtom
|
|
gdk_atom_intern (const gchar *atom_name,
|
|
gboolean only_if_exists)
|
|
{
|
|
GdkDisplayManager *manager = gdk_display_manager_get ();
|
|
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->atom_intern (manager, atom_name, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gdk_atom_intern_static_string:
|
|
* @atom_name: a static string
|
|
*
|
|
* Finds or creates an atom corresponding to a given string.
|
|
*
|
|
* Note that this function is identical to gdk_atom_intern() except
|
|
* that if a new #GdkAtom is created the string itself is used rather
|
|
* than a copy. This saves memory, but can only be used if the string
|
|
* will <emphasis>always</emphasis> exist. It can be used with statically
|
|
* allocated strings in the main program, but not with statically
|
|
* allocated memory in dynamically loaded modules, if you expect to
|
|
* ever unload the module again (e.g. do not use this function in
|
|
* GTK+ theme engines).
|
|
*
|
|
* Returns: the atom corresponding to @atom_name
|
|
*
|
|
* Since: 2.10
|
|
*/
|
|
GdkAtom
|
|
gdk_atom_intern_static_string (const gchar *atom_name)
|
|
{
|
|
GdkDisplayManager *manager = gdk_display_manager_get ();
|
|
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->atom_intern (manager, atom_name, FALSE);
|
|
}
|
|
|
|
/**
|
|
* gdk_atom_name:
|
|
* @atom: a #GdkAtom.
|
|
*
|
|
* Determines the string corresponding to an atom.
|
|
*
|
|
* Returns: a newly-allocated string containing the string
|
|
* corresponding to @atom. When you are done with the
|
|
* return value, you should free it using g_free().
|
|
*/
|
|
gchar *
|
|
gdk_atom_name (GdkAtom atom)
|
|
{
|
|
GdkDisplayManager *manager = gdk_display_manager_get ();
|
|
|
|
return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->get_atom_name (manager, atom);
|
|
}
|