gboolean
screen_update (GnomeRRScreen *screen, gboolean force_callback, gboolean needs_reprobe, GError **error)
{
ScreenInfo *info;
gboolean changed = FALSE;
g_return_val_if_fail (screen != NULL, FALSE);
info = screen_info_new (screen, needs_reprobe, error);
if (!info)
return FALSE;
#ifdef HAVE_RANDR
if (info->resources->configTimestamp != screen->priv->info->resources->configTimestamp)
changed = TRUE;
#endif
screen_info_free (screen->priv->info);
screen->priv->info = info;
if (changed || force_callback)
g_signal_emit (G_OBJECT (screen), screen_signals[SCREEN_CHANGED], 0);
return changed;
}
static gboolean
screen_update (MateRRScreen *screen, gboolean force_callback, gboolean needs_reprobe, GError **error)
{
ScreenInfo *info;
gboolean changed = FALSE;
g_assert (screen != NULL);
info = screen_info_new (screen, needs_reprobe, error);
if (!info)
return FALSE;
#ifdef HAVE_RANDR
if (info->resources->configTimestamp != screen->info->resources->configTimestamp)
changed = TRUE;
#endif
screen_info_free (screen->info);
screen->info = info;
if ((changed || force_callback) && screen->callback)
screen->callback (screen, screen->data);
return changed;
}
static gboolean
gnome_rr_screen_initable_init (GInitable *initable, GCancellable *canc, GError **error)
{
GnomeRRScreen *self = GNOME_RR_SCREEN (initable);
GnomeRRScreenPrivate *priv = self->priv;
priv->info = screen_info_new (self, TRUE, error);
g_return_val_if_fail (priv->info != NULL, FALSE);
return TRUE;
}
/* Returns NULL if screen could not be created. For instance, if
* the driver does not support Xrandr 1.2.
*/
MateRRScreen *
mate_rr_screen_new (GdkScreen *gdk_screen,
MateRRScreenChanged callback,
gpointer data,
GError **error)
{
#ifdef HAVE_RANDR
Display *dpy = GDK_SCREEN_XDISPLAY (gdk_screen);
int event_base;
int ignore;
#endif
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
_mate_desktop_init_i18n ();
#ifdef HAVE_RANDR
if (XRRQueryExtension (dpy, &event_base, &ignore))
{
MateRRScreen *screen = g_new0 (MateRRScreen, 1);
screen->gdk_screen = gdk_screen;
screen->gdk_root = gdk_screen_get_root_window (gdk_screen);
screen->xroot = gdk_x11_drawable_get_xid (screen->gdk_root);
screen->xdisplay = dpy;
screen->xscreen = gdk_x11_screen_get_xscreen (screen->gdk_screen);
screen->connector_type_atom = XInternAtom (dpy, "ConnectorType", FALSE);
screen->callback = callback;
screen->data = data;
screen->randr_event_base = event_base;
XRRQueryVersion (dpy, &screen->rr_major_version, &screen->rr_minor_version);
if (screen->rr_major_version > 1 || (screen->rr_major_version == 1 && screen->rr_minor_version < 2)) {
g_set_error (error, MATE_RR_ERROR, MATE_RR_ERROR_NO_RANDR_EXTENSION,
"RANDR extension is too old (must be at least 1.2)");
g_free (screen);
return NULL;
}
screen->info = screen_info_new (screen, TRUE, error);
if (!screen->info) {
g_free (screen);
return NULL;
}
if (screen->callback) {
XRRSelectInput (screen->xdisplay,
screen->xroot,
RRScreenChangeNotifyMask);
gdk_x11_register_standard_event_type (gdk_screen_get_display (gdk_screen),
event_base,
RRNotify + 1);
gdk_window_add_filter (screen->gdk_root, screen_on_event, screen);
}
return screen;
}
else
{
#endif /* HAVE_RANDR */
g_set_error (error, MATE_RR_ERROR, MATE_RR_ERROR_NO_RANDR_EXTENSION,
_("RANDR extension is not present"));
return NULL;
#ifdef HAVE_RANDR
}
#endif
}