settings: Migrate Backend settings to a new object

Instead of storing settings inside the Backend instance we should use a
separate public object.

clutter/Makefile.am

@@ -124,6 +124,7 @@ source_h =					\
 	$(srcdir)/clutter-score.h 		\
 	$(srcdir)/clutter-script.h		\
 	$(srcdir)/clutter-scriptable.h		\
+	$(srcdir)/clutter-settings.h		\
 	$(srcdir)/clutter-shader.h		\
 	$(srcdir)/clutter-shader-effect.h	\
 	$(srcdir)/clutter-shader-types.h	\
@@ -217,6 +218,7 @@ source_c = \
 	$(srcdir)/clutter-script.c		\
 	$(srcdir)/clutter-script-parser.c	\
 	$(srcdir)/clutter-scriptable.c		\
+	$(srcdir)/clutter-settings.c		\
 	$(srcdir)/clutter-shader.c		\
 	$(srcdir)/clutter-shader-effect.c	\
 	$(srcdir)/clutter-shader-types.c	\

clutter/clutter-backend.c

@@ -60,24 +60,19 @@ G_DEFINE_ABSTRACT_TYPE (ClutterBackend, clutter_backend, G_TYPE_OBJECT);
 
 struct _ClutterBackendPrivate
 {
-  /* settings */
-  guint double_click_time;
-  guint double_click_distance;
-
-  gdouble resolution;
-
-  gfloat units_per_em;
-  gint32 units_serial;
-
   cairo_font_options_t *font_options;
 
   gchar *font_name;
+
+  gfloat units_per_em;
+  gint32 units_serial;
 };
 
 enum
 {
   RESOLUTION_CHANGED,
   FONT_CHANGED,
+  SETTINGS_CHANGED,
 
   LAST_SIGNAL
 };
@@ -87,7 +82,7 @@ static guint backend_signals[LAST_SIGNAL] = { 0, };
 static void
 clutter_backend_dispose (GObject *gobject)
 {
-  ClutterBackendPrivate *priv = CLUTTER_BACKEND (gobject)->priv;
+  ClutterBackend *backend = CLUTTER_BACKEND (gobject);
   ClutterMainContext *clutter_context;
 
   clutter_context = _clutter_context_get_default ();
@@ -101,9 +96,9 @@ clutter_backend_dispose (GObject *gobject)
       clutter_context->events_queue = NULL;
     }
 
-  g_free (priv->font_name);
+  g_free (backend->priv->font_name);
 
-  clutter_backend_set_font_options (CLUTTER_BACKEND (gobject), NULL);
+  clutter_backend_set_font_options (backend, NULL);
 
   G_OBJECT_CLASS (clutter_backend_parent_class)->dispose (gobject);
 }
@@ -166,11 +161,22 @@ static void
 clutter_backend_real_resolution_changed (ClutterBackend *backend)
 {
   ClutterBackendPrivate *priv = backend->priv;
+  ClutterMainContext *context;
+  ClutterSettings *settings;
+  gint dpi;
+
+  context = _clutter_context_get_default ();
+
+  settings = clutter_settings_get_default ();
+  g_object_get (settings, "font-dpi", &dpi, NULL);
+
+  if (context->font_map != NULL)
+    cogl_pango_font_map_set_resolution (context->font_map, dpi / 1024.0);
 
   priv->units_per_em = get_units_per_em (backend, NULL);
   priv->units_serial += 1;
 
-  CLUTTER_NOTE (BACKEND, "Units per em: %.2f", backend->priv->units_per_em);
+  CLUTTER_NOTE (BACKEND, "Units per em: %.2f", priv->units_per_em);
 }
 
 static void
@@ -181,7 +187,7 @@ clutter_backend_real_font_changed (ClutterBackend *backend)
   priv->units_per_em = get_units_per_em (backend, NULL);
   priv->units_serial += 1;
 
-  CLUTTER_NOTE (BACKEND, "Units per em: %.2f", backend->priv->units_per_em);
+  CLUTTER_NOTE (BACKEND, "Units per em: %.2f", priv->units_per_em);
 }
 
 static void
@@ -211,6 +217,15 @@ clutter_backend_class_init (ClutterBackendClass *klass)
                   _clutter_marshal_VOID__VOID,
                   G_TYPE_NONE, 0);
 
+  backend_signals[SETTINGS_CHANGED] =
+    g_signal_new (I_("settings-changed"),
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (ClutterBackendClass, settings_changed),
+                  NULL, NULL,
+                  _clutter_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
   klass->resolution_changed = clutter_backend_real_resolution_changed;
   klass->font_changed = clutter_backend_real_font_changed;
 }
@@ -222,8 +237,6 @@ clutter_backend_init (ClutterBackend *backend)
 
   priv = backend->priv = CLUTTER_BACKEND_GET_PRIVATE (backend);
 
-  priv->resolution = -1.0;
-
   priv->units_per_em = -1.0;
   priv->units_serial = 1;
 }
@@ -531,14 +544,16 @@ clutter_get_default_backend (void)
  * verify whether it's a double click event or not.
  *
  * Since: 0.4
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:double-click-time instead
  */
 void
 clutter_backend_set_double_click_time (ClutterBackend *backend,
                                        guint           msec)
 {
-  g_return_if_fail (CLUTTER_IS_BACKEND (backend));
+  ClutterSettings *settings = clutter_settings_get_default ();
 
-  backend->priv->double_click_time = msec;
+  g_object_set (settings, "double-click-time", msec, NULL);
 }
 
 /**
@@ -551,13 +566,18 @@ clutter_backend_set_double_click_time (ClutterBackend *backend,
  * Return value: a time in milliseconds
  *
  * Since: 0.4
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:double-click-time instead
  */
 guint
 clutter_backend_get_double_click_time (ClutterBackend *backend)
 {
-  g_return_val_if_fail (CLUTTER_IS_BACKEND (backend), 0);
+  ClutterSettings *settings = clutter_settings_get_default ();
+  gint retval;
 
-  return backend->priv->double_click_time;
+  g_object_get (settings, "double-click-time", &retval, NULL);
+
+  return retval;
 }
 
 /**
@@ -568,14 +588,16 @@ clutter_backend_get_double_click_time (ClutterBackend *backend)
  * Sets the maximum distance used to verify a double click event.
  *
  * Since: 0.4
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:double-click-distance instead
  */
 void
 clutter_backend_set_double_click_distance (ClutterBackend *backend,
                                            guint           distance)
 {
-  g_return_if_fail (CLUTTER_IS_BACKEND (backend));
+  ClutterSettings *settings = clutter_settings_get_default ();
 
-  backend->priv->double_click_distance = distance;
+  g_object_set (settings, "double-click-distance", distance, NULL);
 }
 
 /**
@@ -587,13 +609,18 @@ clutter_backend_set_double_click_distance (ClutterBackend *backend,
  * Return value: a distance, in pixels.
  *
  * Since: 0.4
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:double-click-distance instead
  */
 guint
 clutter_backend_get_double_click_distance (ClutterBackend *backend)
 {
-  g_return_val_if_fail (CLUTTER_IS_BACKEND (backend), 0);
+  ClutterSettings *settings = clutter_settings_get_default ();
+  gint retval;
 
-  return backend->priv->double_click_distance;
+  g_object_get (settings, "double-click-distance", &retval, NULL);
+
+  return retval;
 }
 
 /**
@@ -610,26 +637,25 @@ clutter_backend_get_double_click_distance (ClutterBackend *backend)
  * Applications should never need to call this function.
  *
  * Since: 0.4
+ *
+ * Deprecated: Use #ClutterSettings:font-dpi instead
  */
 void
 clutter_backend_set_resolution (ClutterBackend *backend,
                                 gdouble         dpi)
 {
-  ClutterBackendPrivate *priv;
+  ClutterSettings *settings;
+  gint resolution;
 
   g_return_if_fail (CLUTTER_IS_BACKEND (backend));
 
-  priv = backend->priv;
-
   if (dpi < 0)
-    dpi = -1.0;
+    resolution = -1;
+  else
+    resolution = dpi * 1024;
 
-  priv->resolution = dpi;
+  settings = clutter_settings_get_default ();
-
+  g_object_set (settings, "font-dpi", resolution, NULL);
-  if (CLUTTER_CONTEXT ()->font_map)
-    cogl_pango_font_map_set_resolution (CLUTTER_CONTEXT ()->font_map, dpi);
-
-  g_signal_emit (backend, backend_signals[RESOLUTION_CHANGED], 0);
 }
 
 /**
@@ -647,9 +673,15 @@ clutter_backend_set_resolution (ClutterBackend *backend,
 gdouble
 clutter_backend_get_resolution (ClutterBackend *backend)
 {
+  ClutterSettings *settings;
+  gint resolution;
+
   g_return_val_if_fail (CLUTTER_IS_BACKEND (backend), -1.0);
 
-  return backend->priv->resolution;
+  settings = clutter_settings_get_default ();
+  g_object_get (settings, "font-dpi", &resolution, NULL);
+
+  return resolution / 1024.0;
 }
 
 /**
@@ -742,25 +774,16 @@ clutter_backend_get_font_options (ClutterBackend *backend)
  * be parsed by the pango_font_description_from_string() function.
  *
  * Since: 1.0
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:font-name instead
  */
 void
 clutter_backend_set_font_name (ClutterBackend *backend,
                                const gchar    *font_name)
 {
-  ClutterBackendPrivate *priv;
+  ClutterSettings *settings = clutter_settings_get_default ();
 
-  g_return_if_fail (CLUTTER_IS_BACKEND (backend));
+  g_object_set (settings, "font-name", font_name, NULL);
-
-  priv = backend->priv;
-
-  g_free (priv->font_name);
-
-  if (font_name == NULL || *font_name == '\0')
-    priv->font_name = g_strdup (DEFAULT_FONT_NAME);
-  else
-    priv->font_name = g_strdup (font_name);
-
-  g_signal_emit (backend, backend_signals[FONT_CHANGED], 0);
 }
 
 /**
@@ -774,25 +797,26 @@ clutter_backend_set_font_name (ClutterBackend *backend,
  *   owned by the #ClutterBackend and should never be modified or freed
  *
  * Since: 1.0
+ *
+ * Deprecated: 1.4: Use #ClutterSettings:font-name instead
  */
 G_CONST_RETURN gchar *
 clutter_backend_get_font_name (ClutterBackend *backend)
 {
   ClutterBackendPrivate *priv;
+  ClutterSettings *settings;
 
   g_return_val_if_fail (CLUTTER_IS_BACKEND (backend), NULL);
 
   priv = backend->priv;
 
-  if (G_LIKELY (priv->font_name))
+  settings = clutter_settings_get_default ();
-    return priv->font_name;
 
-  /* if we have never been called then we need to set the
+  /* XXX yuck. but we return a const pointer, so we need to
-   * default font and update everything that relies on the
+   * store it in the backend
-   * ::font-changed signal
    */
-  priv->font_name = g_strdup (DEFAULT_FONT_NAME);
+  g_free (priv->font_name);
-  g_signal_emit (backend, backend_signals[FONT_CHANGED], 0);
+  g_object_get (settings, "font-name", &priv->font_name, NULL);
 
   return priv->font_name;
 }

clutter/clutter-backend.h

@@ -88,6 +88,7 @@ struct _ClutterBackendClass
   /* signals */
   void (* resolution_changed) (ClutterBackend *backend);
   void (* font_changed)       (ClutterBackend *backend);
+  void (* settings_changed)   (ClutterBackend *backend);
 };
 
 GType clutter_backend_get_type    (void) G_GNUC_CONST;

clutter/clutter-private.h

@@ -44,6 +44,7 @@
 #include "clutter-id-pool.h"
 #include "clutter-layout-manager.h"
 #include "clutter-master-clock.h"
+#include "clutter-settings.h"
 #include "clutter-stage-manager.h"
 #include "clutter-stage-window.h"
 #include "clutter-stage.h"
@@ -171,6 +172,8 @@ struct _ClutterMainContext
   gulong redraw_count;
 
   GList *repaint_funcs;
+
+  ClutterSettings *settings;
 };
 
 #define CLUTTER_CONTEXT()	(_clutter_context_get_default ())

clutter/clutter-settings.c

@@ -0,0 +1,401 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "clutter-settings.h"
+
+#include "clutter-debug.h"
+#include "clutter-private.h"
+
+#define DEFAULT_FONT_NAME       "Sans 12"
+
+#define CLUTTER_SETTINGS_CLASS(klass)           (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_SETTINGS, ClutterSettingsClass))
+#define CLUTTER_IS_SETTINGS_CLASS(klass)        (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_SETTINGS))
+#define CLUTTER_SETTINGS_GET_CLASS(obj)         (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_SETTINGS, ClutterSettingsClass))
+
+typedef struct _ClutterSettingsClass            ClutterSettingsClass;
+
+struct _ClutterSettings
+{
+  GObject parent_instance;
+
+  ClutterBackend *backend;
+
+  gint double_click_time;
+  gint double_click_distance;
+
+  gdouble resolution;
+
+  gchar *font_name;
+
+  gint xft_hinting;
+  gint xft_antialias;
+  gchar *xft_hint_style;
+  gchar *xft_rgba;
+};
+
+struct _ClutterSettingsClass
+{
+  GObjectClass parent_class;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_BACKEND,
+
+  PROP_DOUBLE_CLICK_TIME,
+  PROP_DOUBLE_CLICK_DISTANCE,
+
+  PROP_FONT_NAME,
+
+  PROP_FONT_ANTIALIAS,
+  PROP_FONT_DPI,
+  PROP_FONT_HINTING,
+  PROP_FONT_HINT_STYLE,
+  PROP_FONT_RGBA
+};
+
+G_DEFINE_TYPE (ClutterSettings, clutter_settings, G_TYPE_OBJECT);
+
+static inline void
+settings_update_font_options (ClutterSettings *self)
+{
+  cairo_hint_style_t hint_style = CAIRO_HINT_STYLE_NONE;
+  cairo_antialias_t antialias_mode = CAIRO_ANTIALIAS_GRAY;
+  cairo_subpixel_order_t subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+  cairo_font_options_t *options;
+
+  options = cairo_font_options_create ();
+
+  cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON);
+
+  if (self->xft_hinting >= 0 &&
+      self->xft_hint_style == NULL)
+    {
+      hint_style = CAIRO_HINT_STYLE_NONE;
+    }
+  else if (self->xft_hint_style != NULL)
+    {
+      if (strcmp (self->xft_hint_style, "hintnone") == 0)
+        hint_style = CAIRO_HINT_STYLE_NONE;
+      else if (strcmp (self->xft_hint_style, "hintslight") == 0)
+        hint_style = CAIRO_HINT_STYLE_SLIGHT;
+      else if (strcmp (self->xft_hint_style, "hintmedium") == 0)
+        hint_style = CAIRO_HINT_STYLE_MEDIUM;
+      else if (strcmp (self->xft_hint_style, "hintfull") == 0)
+        hint_style = CAIRO_HINT_STYLE_FULL;
+    }
+
+  cairo_font_options_set_hint_style (options, hint_style);
+
+  if (self->xft_rgba)
+    {
+      if (strcmp (self->xft_rgba, "rgb") == 0)
+        subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+      else if (strcmp (self->xft_rgba, "bgr") == 0)
+        subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+      else if (strcmp (self->xft_rgba, "vrgb") == 0)
+        subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+      else if (strcmp (self->xft_rgba, "vbgr") == 0)
+        subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+    }
+
+  cairo_font_options_set_subpixel_order (options, subpixel_order);
+
+  if (self->xft_antialias >= 0 && !self->xft_antialias)
+    antialias_mode = CAIRO_ANTIALIAS_NONE;
+  else if (subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT)
+    antialias_mode = CAIRO_ANTIALIAS_SUBPIXEL;
+  else if (self->xft_antialias >= 0)
+    antialias_mode = CAIRO_ANTIALIAS_GRAY;
+
+  cairo_font_options_set_antialias (options, antialias_mode);
+
+  clutter_backend_set_font_options (self->backend, options);
+  cairo_font_options_destroy (options);
+}
+
+static void
+settings_update_resolution (ClutterSettings *self)
+{
+  g_signal_emit_by_name (self->backend, "resolution-changed");
+}
+
+static void
+clutter_settings_finalize (GObject *gobject)
+{
+  ClutterSettings *self = CLUTTER_SETTINGS (gobject);
+
+  g_free (self->font_name);
+  g_free (self->xft_hint_style);
+  g_free (self->xft_rgba);
+
+  G_OBJECT_CLASS (clutter_settings_parent_class)->finalize (gobject);
+}
+
+static void
+clutter_settings_set_property (GObject      *gobject,
+                               guint         prop_id,
+                               const GValue *value,
+                               GParamSpec   *pspec)
+{
+  ClutterSettings *self = CLUTTER_SETTINGS (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_BACKEND:
+      self->backend = g_value_get_object (value);
+      break;
+
+    case PROP_DOUBLE_CLICK_TIME:
+      self->double_click_time = g_value_get_int (value);
+      break;
+
+    case PROP_DOUBLE_CLICK_DISTANCE:
+      self->double_click_distance = g_value_get_int (value);
+      break;
+
+    case PROP_FONT_NAME:
+      g_free (self->font_name);
+      self->font_name = g_value_dup_string (value);
+      settings_update_font_options (self);
+      break;
+
+    case PROP_FONT_ANTIALIAS:
+      self->xft_antialias = g_value_get_int (value);
+      settings_update_font_options (self);
+      break;
+
+    case PROP_FONT_DPI:
+      self->resolution = (gdouble) g_value_get_int (value) / 1024.0;
+      settings_update_resolution (self);
+      break;
+
+    case PROP_FONT_HINTING:
+      self->xft_hinting = g_value_get_int (value);
+      settings_update_font_options (self);
+      break;
+
+    case PROP_FONT_HINT_STYLE:
+      g_free (self->xft_hint_style);
+      self->xft_hint_style = g_value_dup_string (value);
+      settings_update_font_options (self);
+      break;
+
+    case PROP_FONT_RGBA:
+      g_free (self->xft_rgba);
+      self->xft_rgba = g_value_dup_string (value);
+      settings_update_font_options (self);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+clutter_settings_get_property (GObject    *gobject,
+                               guint       prop_id,
+                               GValue     *value,
+                               GParamSpec *pspec)
+{
+  ClutterSettings *self = CLUTTER_SETTINGS (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_DOUBLE_CLICK_TIME:
+      g_value_set_int (value, self->double_click_time);
+      break;
+
+    case PROP_DOUBLE_CLICK_DISTANCE:
+      g_value_set_int (value, self->double_click_distance);
+      break;
+
+    case PROP_FONT_NAME:
+      g_value_set_string (value, self->font_name);
+      break;
+
+    case PROP_FONT_ANTIALIAS:
+      g_value_set_int (value, self->xft_antialias);
+      break;
+
+    case PROP_FONT_DPI:
+      g_value_set_int (value, self->resolution * 1024);
+      break;
+
+    case PROP_FONT_HINTING:
+      g_value_set_int (value, self->xft_hinting);
+      break;
+
+    case PROP_FONT_HINT_STYLE:
+      g_value_set_string (value, self->xft_hint_style);
+      break;
+
+    case PROP_FONT_RGBA:
+      g_value_set_string (value, self->xft_rgba);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+clutter_settings_notify (GObject    *gobject,
+                         GParamSpec *pspec)
+{
+  ClutterSettings *self = CLUTTER_SETTINGS (gobject);
+
+  g_signal_emit_by_name (self->backend, "settings-changed");
+}
+
+static void
+clutter_settings_class_init (ClutterSettingsClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GParamSpec *pspec;
+
+  gobject_class->set_property = clutter_settings_set_property;
+  gobject_class->get_property = clutter_settings_get_property;
+  gobject_class->notify = clutter_settings_notify;
+  gobject_class->finalize = clutter_settings_finalize;
+
+  pspec = g_param_spec_object ("backend",
+                               "Backend",
+                               "A pointer to the backend",
+                               CLUTTER_TYPE_BACKEND,
+                               CLUTTER_PARAM_WRITABLE |
+                               G_PARAM_CONSTRUCT_ONLY);
+  g_object_class_install_property (gobject_class, PROP_BACKEND, pspec);
+
+  pspec = g_param_spec_int ("double-click-time",
+                            "Double Click Time",
+                            "The time between clicks necessary to detect "
+                            "a multiple click",
+                            0, G_MAXINT,
+                            250,
+                            CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_DOUBLE_CLICK_TIME,
+                                   pspec);
+
+  pspec = g_param_spec_int ("double-click-distance",
+                            "Double Click Distance",
+                            "The distance between clicks necessary to detect "
+                            "a multiple click",
+                            0, G_MAXINT,
+                            5,
+                            CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_DOUBLE_CLICK_DISTANCE,
+                                   pspec);
+
+  pspec = g_param_spec_string ("font-name",
+                               "Font Name",
+                               "The description of the default font, as "
+                               "one that could be parsed by Pango",
+                               NULL,
+                               CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_NAME,
+                                   pspec);
+
+  pspec = g_param_spec_int ("font-antialias",
+                            "Font Antialias",
+                            "Whether to use antialiasing (1 to enable, 0 to "
+                            "disable, and -1 to use the default)",
+                            -1, 1,
+                            -1,
+                            CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_ANTIALIAS,
+                                   pspec);
+
+  pspec = g_param_spec_int ("font-dpi",
+                            "Font DPI",
+                            "The resolution of the font, in 1024 * dots/inch, "
+                            "or -1 to use the default",
+                            -1, 1024 * 1024,
+                            -1,
+                            CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_DPI,
+                                   pspec);
+
+  pspec = g_param_spec_int ("font-hinting",
+                            "Font Hinting",
+                            "Whether to use hinting (1 to enable, 0 to disable "
+                            "and -1 to use the default)",
+                            -1, 1,
+                            -1,
+                            CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_HINTING,
+                                   pspec);
+
+  pspec = g_param_spec_string ("font-hint-style",
+                               "Font Hint Style",
+                               "The style of hinting (hintnone, hintslight, "
+                               "hintmedium, hintfull)",
+                               NULL,
+                               CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_HINT_STYLE,
+                                   pspec);
+
+  pspec = g_param_spec_string ("font-subpixel-order",
+                               "Font Subpixel Order",
+                               "The type of subpixel antialiasing (none, rgb, "
+                               "bgr, vrgb, vbgr)",
+                               NULL,
+                               CLUTTER_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class,
+                                   PROP_FONT_RGBA,
+                                   pspec);
+}
+
+static void
+clutter_settings_init (ClutterSettings *self)
+{
+  self->resolution = -1.0;
+
+  self->double_click_time = 250;
+  self->double_click_distance = 5;
+
+  self->font_name = g_strdup (DEFAULT_FONT_NAME);
+
+  self->xft_antialias = -1;
+  self->xft_hinting = -1;
+  self->xft_hint_style = NULL;
+  self->xft_rgba = NULL;
+}
+
+/**
+ * clutter_settings_get_default:
+ *
+ * Retrieves the singleton instance of #ClutterSettings
+ *
+ * Return value: (transfer none): the instance of #ClutterSettings. The
+ *   returned object is owned by Clutter and it should not be unreferenced
+ *   directly
+ *
+ * Since: 1.4
+ */
+ClutterSettings *
+clutter_settings_get_default (void)
+{
+  ClutterMainContext *context = _clutter_context_get_default ();
+
+  if (G_LIKELY (context->settings != NULL))
+    return context->settings;
+
+  context->settings = g_object_new (CLUTTER_TYPE_SETTINGS,
+                                    "backend", context->backend,
+                                    NULL);
+
+  return context->settings;
+}

clutter/clutter-settings.h

@@ -0,0 +1,24 @@
+#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
+#error "Only <clutter/clutter.h> can be included directly."
+#endif
+
+#ifndef __CLUTTER_SETTINGS_H__
+#define __CLUTTER_SETTINGS_H__
+
+#include <clutter/clutter-types.h>
+
+G_BEGIN_DECLS
+
+#define CLUTTER_TYPE_SETTINGS           (clutter_settings_get_type ())
+#define CLUTTER_SETTINGS(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_SETTINGS, ClutterSettings))
+#define CLUTTER_IS_SETTINGS(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_SETTINGS))
+
+typedef struct _ClutterSettings         ClutterSettings;
+
+GType clutter_settings_get_type (void) G_GNUC_CONST;
+
+ClutterSettings *clutter_settings_get_default (void);
+
+G_END_DECLS
+
+#endif /* __CLUTTER_SETTINGS_H__ */

clutter/clutter.h

@@ -87,6 +87,7 @@
 #include "clutter-score.h"
 #include "clutter-scriptable.h"
 #include "clutter-script.h"
+#include "clutter-settings.h"
 #include "clutter-shader.h"
 #include "clutter-shader-effect.h"
 #include "clutter-shader-types.h"