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x11: Open backend X11 connection ourself

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Don't wait for clutter to initialize for connecting to X11; do it when
constructing the backend instance. This way we can later depend on
having an X11 connection earlier during initialization.

https://bugzilla.gnome.org/show_bug.cgi?id=786408
This commit is contained in:
Jonas Ådahl 2017-07-10 16:50:43 +08:00
parent f950380202
commit a6d67b164a
1 changed files with 49 additions and 3 deletions
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52
src/backends/x11/meta-backend-x11.c
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@ -72,7 +72,15 @@ struct _MetaBackendX11Private
};
typedef struct _MetaBackendX11Private MetaBackendX11Private;
G_DEFINE_TYPE_WITH_PRIVATE (MetaBackendX11, meta_backend_x11, META_TYPE_BACKEND);
static GInitableIface *initable_parent_iface;
static void
initable_iface_init (GInitableIface *initable_iface);
G_DEFINE_TYPE_WITH_CODE (MetaBackendX11, meta_backend_x11, META_TYPE_BACKEND,
G_ADD_PRIVATE (MetaBackendX11)
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
initable_iface_init));
static void
handle_alarm_notify (MetaBackend *backend,
@ -392,8 +400,6 @@ meta_backend_x11_post_init (MetaBackend *backend)
int major, minor;
gboolean has_xi = FALSE;
priv->xdisplay = clutter_x11_get_default_display ();
priv->source = x_event_source_new (backend);
if (!XSyncQueryExtension (priv->xdisplay, &priv->xsync_event_base, &priv->xsync_error_base) ||
@ -586,6 +592,46 @@ meta_backend_x11_get_xkb_event_base (MetaBackendX11 *x11)
return priv->xkb_event_base;
}
static gboolean
meta_backend_x11_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaBackendX11 *x11 = META_BACKEND_X11 (initable);
MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
Display *xdisplay;
const char *xdisplay_name;
xdisplay_name = g_getenv ("DISPLAY");
if (!xdisplay_name)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Unable to open display, DISPLAY not set");
return FALSE;
}
xdisplay = XOpenDisplay (xdisplay_name);
if (!xdisplay)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Unable to open display '%s'", xdisplay_name);
return FALSE;
}
priv->xdisplay = xdisplay;
clutter_x11_set_display (xdisplay);
return initable_parent_iface->init (initable, cancellable, error);
}
static void
initable_iface_init (GInitableIface *initable_iface)
{
initable_parent_iface = g_type_interface_peek_parent (initable_iface);
initable_iface->init = meta_backend_x11_initable_init;
}
static void
meta_backend_x11_class_init (MetaBackendX11Class *klass)
{