forked from AuroraMiddleware/gtk
495 lines
14 KiB
C
495 lines
14 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*
|
|
* 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 "gdkdisplayprivate.h"
|
|
#include "gdkinternals.h"
|
|
#include "gdkkeysprivate.h"
|
|
#include "gdkmarshalers.h"
|
|
#include "gdkintl.h"
|
|
|
|
#ifdef GDK_WINDOWING_X11
|
|
#include "x11/gdkx.h"
|
|
#include "x11/gdkprivate-x11.h"
|
|
#endif
|
|
|
|
#ifdef GDK_WINDOWING_QUARTZ
|
|
/* When the gdk_quartz_display_open function is removed We can
|
|
* immediately include gdkquartzdisplaymanager.h here instead of
|
|
* gdkprivate-quartz.h so that we won't have to enable -xobjective-c
|
|
* for the "generic" GDK source code.
|
|
* #include "quartz/gdkquartzdisplaymanager.h"
|
|
*/
|
|
#include "quartz/gdkprivate-quartz.h"
|
|
#endif
|
|
|
|
#ifdef GDK_WINDOWING_BROADWAY
|
|
#include "broadway/gdkprivate-broadway.h"
|
|
#endif
|
|
|
|
#ifdef GDK_WINDOWING_WIN32
|
|
#include "win32/gdkwin32.h"
|
|
#include "win32/gdkprivate-win32.h"
|
|
#endif
|
|
|
|
#ifdef GDK_WINDOWING_WAYLAND
|
|
#include "wayland/gdkprivate-wayland.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.
|
|
*
|
|
* You can use gdk_display_manager_get() to obtain the GdkDisplayManager
|
|
* singleton, but that should be rarely necessary. Typically, initializing
|
|
* GTK+ opens a display that you can work with without ever accessing the
|
|
* GdkDisplayManager.
|
|
*
|
|
* The GDK library can be built with support for multiple backends.
|
|
* The GdkDisplayManager object determines which backend is used
|
|
* at runtime.
|
|
*
|
|
* When writing backend-specific code that is supposed to work with
|
|
* multiple GDK backends, you have to consider both compile time and
|
|
* runtime. At compile time, use the #GDK_WINDOWING_X11, #GDK_WINDOWING_WIN32
|
|
* macros, etc. to find out which backends are present in the GDK library
|
|
* you are building your application against. At runtime, use type-check
|
|
* macros like GDK_IS_X11_DISPLAY() to find out which backend is in use:
|
|
*
|
|
* <example id="backend-specific">
|
|
* <title>Backend-specific code</title>
|
|
* |[<!-- language="C" -->
|
|
* #ifdef GDK_WINDOWING_X11
|
|
* if (GDK_IS_X11_DISPLAY (display))
|
|
* {
|
|
* /* make X11-specific calls here */
|
|
* }
|
|
* else
|
|
* #endif
|
|
* #ifdef GDK_WINDOWING_QUARTZ
|
|
* if (GDK_IS_QUARTZ_DISPLAY (display))
|
|
* {
|
|
* /* make Quartz-specific calls here */
|
|
* }
|
|
* else
|
|
* #endif
|
|
* g_error ("Unsupported GDK backend");
|
|
* ]|
|
|
* </example>
|
|
*/
|
|
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
static const gchar *allowed_backends;
|
|
|
|
/**
|
|
* gdk_set_allowed_backends:
|
|
* @backends: a comma-separated list of backends
|
|
*
|
|
* Sets a list of backends that GDK should try to use.
|
|
*
|
|
* This can be be useful if your application does not
|
|
* work with certain GDK backends.
|
|
*
|
|
* By default, GDK tries all included backends.
|
|
*
|
|
* For example,
|
|
* |[<!-- language="C" -->
|
|
* gdk_set_allowed_backends ("wayland,quartz,*");
|
|
* ]|
|
|
* instructs GDK to try the Wayland backend first,
|
|
* followed by the Quartz backend, and then all
|
|
* others.
|
|
*
|
|
* If the <envar>GDK_BACKEND</envar> environment variable
|
|
* is set, it determines what backends are tried in what
|
|
* order, while still respecting the set of allowed backends
|
|
* that are specified by this function.
|
|
*
|
|
* The possible backend names are x11, win32, quartz,
|
|
* broadway, wayland. You can also include a * in the
|
|
* list to try all remaining backends.
|
|
*
|
|
* This call must happen prior to gdk_display_open(),
|
|
* gtk_init(), gtk_init_with_args() or gtk_init_check()
|
|
* in order to take effect.
|
|
*
|
|
* Since: 3.10
|
|
*/
|
|
void
|
|
gdk_set_allowed_backends (const gchar *backends)
|
|
{
|
|
allowed_backends = g_strdup (backends);
|
|
}
|
|
|
|
typedef struct _GdkBackend GdkBackend;
|
|
|
|
struct _GdkBackend {
|
|
const char *name;
|
|
GdkDisplay * (* open_display) (const char *name);
|
|
};
|
|
|
|
static GdkBackend gdk_backends[] = {
|
|
#ifdef GDK_WINDOWING_QUARTZ
|
|
{ "quartz", _gdk_quartz_display_open },
|
|
#endif
|
|
#ifdef GDK_WINDOWING_WIN32
|
|
{ "win32", _gdk_win32_display_open },
|
|
#endif
|
|
#ifdef GDK_WINDOWING_X11
|
|
{ "x11", _gdk_x11_display_open },
|
|
#endif
|
|
#ifdef GDK_WINDOWING_WAYLAND
|
|
{ "wayland", _gdk_wayland_display_open },
|
|
#endif
|
|
#ifdef GDK_WINDOWING_BROADWAY
|
|
{ "broadway", _gdk_broadway_display_open },
|
|
#endif
|
|
/* NULL-terminating this array so we can use commas above */
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
/**
|
|
* gdk_display_manager_get:
|
|
*
|
|
* Gets the singleton #GdkDisplayManager object.
|
|
*
|
|
* When called for the first time, this function consults the
|
|
* <envar>GDK_BACKEND</envar> environment variable to find out which
|
|
* of the supported GDK backends to use (in case GDK has been compiled
|
|
* with multiple backends). Applications can use gdk_set_allowed_backends()
|
|
* to limit what backends can be used.
|
|
*
|
|
* Returns: (transfer none): The global #GdkDisplayManager singleton;
|
|
* gdk_parse_args(), 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 == NULL)
|
|
manager = g_object_new (GDK_TYPE_DISPLAY_MANAGER, NULL);
|
|
|
|
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 manager->default_display;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
manager->default_display = display;
|
|
|
|
if (display)
|
|
GDK_DISPLAY_GET_CLASS (display)->make_default (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 g_slist_copy (manager->displays);
|
|
}
|
|
|
|
/**
|
|
* gdk_display_manager_open_display:
|
|
* @manager: a #GdkDisplayManager
|
|
* @name: the name of the display to open
|
|
*
|
|
* Opens a display.
|
|
*
|
|
* Return value: (transfer none): a #GdkDisplay, or %NULL
|
|
* if the display could not be opened
|
|
*
|
|
* Since: 3.0
|
|
*/
|
|
GdkDisplay *
|
|
gdk_display_manager_open_display (GdkDisplayManager *manager,
|
|
const gchar *name)
|
|
{
|
|
const gchar *backend_list;
|
|
GdkDisplay *display;
|
|
gchar **backends;
|
|
gint i, j;
|
|
gboolean allow_any;
|
|
|
|
if (allowed_backends == NULL)
|
|
allowed_backends = "*";
|
|
allow_any = strstr (allowed_backends, "*") != NULL;
|
|
|
|
backend_list = g_getenv ("GDK_BACKEND");
|
|
if (backend_list == NULL)
|
|
backend_list = allowed_backends;
|
|
backends = g_strsplit (backend_list, ",", 0);
|
|
|
|
display = NULL;
|
|
|
|
for (i = 0; display == NULL && backends[i] != NULL; i++)
|
|
{
|
|
const gchar *backend = backends[i];
|
|
gboolean any = g_str_equal (backend, "*");
|
|
|
|
if (!allow_any && !any && !strstr (allowed_backends, backend))
|
|
continue;
|
|
|
|
for (j = 0; gdk_backends[j].name != NULL; j++)
|
|
{
|
|
if ((any && allow_any) ||
|
|
(any && strstr (allowed_backends, gdk_backends[j].name)) ||
|
|
g_str_equal (backend, gdk_backends[j].name))
|
|
{
|
|
GDK_NOTE (MISC, g_message ("Trying %s backend", gdk_backends[j].name));
|
|
display = gdk_backends[j].open_display (name);
|
|
if (display)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_strfreev (backends);
|
|
|
|
return display;
|
|
}
|
|
|
|
void
|
|
_gdk_display_manager_add_display (GdkDisplayManager *manager,
|
|
GdkDisplay *display)
|
|
{
|
|
if (manager->displays == NULL)
|
|
gdk_display_manager_set_default_display (manager, display);
|
|
|
|
manager->displays = g_slist_prepend (manager->displays, display);
|
|
|
|
g_signal_emit (manager, signals[DISPLAY_OPENED], 0, display);
|
|
}
|
|
|
|
/* NB: This function can be called multiple times per display. */
|
|
void
|
|
_gdk_display_manager_remove_display (GdkDisplayManager *manager,
|
|
GdkDisplay *display)
|
|
{
|
|
manager->displays = g_slist_remove (manager->displays, display);
|
|
|
|
if (manager->default_display == display)
|
|
{
|
|
if (manager->displays)
|
|
gdk_display_manager_set_default_display (manager, manager->displays->data);
|
|
else
|
|
gdk_display_manager_set_default_display (manager, NULL);
|
|
}
|
|
}
|