libeek: share a single drawing context among each clutter elements

A new class EekClutterDrawingContext maintains the context used to draw actors. Single EekClutterDrawingContext instance is shared by EekClutterKeyboard, EekClutterSection, EekClutterKey, and EekClutterKeyActor.

eek/Makefile.am

@@ -56,6 +56,8 @@ libeek_clutter_la_SOURCES = \
 	eek-clutter-key.h \
 	eek-clutter-key-actor.c \
 	eek-clutter-key-actor.h \
+	eek-clutter-drawing-context.c \
+	eek-clutter-drawing-context.h \
 	eek-drawing.h \
 	eek-drawing.c \
 	eek-clutter.h

eek/eek-clutter-drawing-context.c

@@ -0,0 +1,137 @@
+/* 
+ * Copyright (C) 2010 Daiki Ueno <ueno@unixuser.org>
+ * Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <string.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif  /* HAVE_CONFIG_H */
+
+#include "eek-clutter-drawing-context.h"
+
+G_DEFINE_TYPE (EekClutterDrawingContext, eek_clutter_drawing_context,
+               G_TYPE_INITIALLY_UNOWNED);
+
+#define EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(obj)                                  \
+    (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EEK_TYPE_CLUTTER_DRAWING_CONTEXT, EekClutterDrawingContextPrivate))
+
+struct _EekClutterDrawingContextPrivate
+{
+    /* outline pointer -> ClutterTexture */
+    GHashTable *outline_textures;
+
+    /* keysym category -> PangoFontDescription * */
+    PangoFontDescription *category_fonts[EEK_KEYSYM_CATEGORY_LAST];
+};
+
+static void
+eek_clutter_drawing_context_dispose (GObject *object)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(object);
+    if (priv->outline_textures) {
+        g_hash_table_unref (priv->outline_textures);
+        priv->outline_textures = NULL;
+    }
+}
+
+static void
+eek_clutter_drawing_context_finalize (GObject *object)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(object);
+    gint i;
+
+    for (i = 0; i < EEK_KEYSYM_CATEGORY_LAST; i++)
+        pango_font_description_free (priv->category_fonts[i]);
+}
+
+static void
+eek_clutter_drawing_context_class_init (EekClutterDrawingContextClass *klass)
+{
+    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+    g_type_class_add_private (gobject_class,
+                              sizeof (EekClutterDrawingContextPrivate));
+
+    gobject_class->finalize = eek_clutter_drawing_context_finalize;
+}
+
+static void
+eek_clutter_drawing_context_init (EekClutterDrawingContext *self)
+{
+    EekClutterDrawingContextPrivate *priv;
+
+    priv = self->priv = EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(self);
+    priv->outline_textures = g_hash_table_new (g_direct_hash, g_direct_equal);
+    memset (priv->category_fonts, 0, sizeof *priv->category_fonts);
+}
+
+void
+eek_clutter_drawing_context_set_outline_texture
+ (EekClutterDrawingContext *context,
+  EekOutline               *outline,
+  ClutterActor             *texture)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(context);
+    g_return_if_fail (priv);
+    g_hash_table_insert (context->priv->outline_textures, outline, texture);
+}
+
+ClutterActor *
+eek_clutter_drawing_context_get_outline_texture
+ (EekClutterDrawingContext *context,
+  EekOutline               *outline)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(context);
+    g_return_val_if_fail (priv, NULL);
+    return g_hash_table_lookup (context->priv->outline_textures, outline);
+}
+
+void
+eek_clutter_drawing_context_set_category_font
+ (EekClutterDrawingContext *context,
+  EekKeysymCategory         category,
+  PangoFontDescription     *font)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(context);
+    g_return_if_fail (priv);
+    priv->category_fonts[category] = pango_font_description_copy (font);
+}
+
+PangoFontDescription *
+eek_clutter_drawing_context_get_category_font
+ (EekClutterDrawingContext *context,
+  EekKeysymCategory         category)
+{
+    EekClutterDrawingContextPrivate *priv =
+        EEK_CLUTTER_DRAWING_CONTEXT_GET_PRIVATE(context);
+    g_return_val_if_fail (priv, NULL);
+    return priv->category_fonts[category];
+}
+
+EekClutterDrawingContext *
+eek_clutter_drawing_context_new (void)
+{
+    return g_object_new (EEK_TYPE_CLUTTER_DRAWING_CONTEXT, NULL);
+}

eek/eek-clutter-drawing-context.h

@@ -0,0 +1,78 @@
+/* 
+ * Copyright (C) 2010 Daiki Ueno <ueno@unixuser.org>
+ * Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+#ifndef EEK_CLUTTER_DRAWING_CONTEXT_H
+#define EEK_CLUTTER_DRAWING_CONTEXT_H 1
+
+#include <clutter/clutter.h>
+#include <pango/pango.h>
+
+#include "eek-keysym.h"
+#include "eek-types.h"
+
+G_BEGIN_DECLS
+#define EEK_TYPE_CLUTTER_DRAWING_CONTEXT (eek_clutter_drawing_context_get_type())
+#define EEK_CLUTTER_DRAWING_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EEK_TYPE_CLUTTER_DRAWING_CONTEXT, EekClutterDrawingContext))
+#define EEK_CLUTTER_DRAWING_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EEK_TYPE_CLUTTER_DRAWING_CONTEXT, EekClutterDrawingContextClass))
+#define EEK_IS_CLUTTER_DRAWING_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EEK_TYPE_CLUTTER_DRAWING_CONTEXT))
+#define EEK_IS_CLUTTER_DRAWING_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EEK_TYPE_CLUTTER_DRAWING_CONTEXT))
+#define EEK_CLUTTER_DRAWING_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EEK_TYPE_CLUTTER_DRAWING_CONTEXT, EekClutterDrawingContextClass))
+
+typedef struct _EekClutterDrawingContext        EekClutterDrawingContext;
+typedef struct _EekClutterDrawingContextClass   EekClutterDrawingContextClass;
+typedef struct _EekClutterDrawingContextPrivate EekClutterDrawingContextPrivate;
+
+struct _EekClutterDrawingContext
+{
+    /*< private >*/
+    GInitiallyUnowned parent;
+
+    /*< private >*/
+    EekClutterDrawingContextPrivate *priv;
+};
+
+struct _EekClutterDrawingContextClass
+{
+    /*< private >*/
+    GInitiallyUnownedClass parent_class;
+};
+
+GType                     eek_clutter_drawing_context_get_type
+                          (void) G_GNUC_CONST;
+EekClutterDrawingContext *eek_clutter_drawing_context_new
+                          (void);
+
+void                      eek_clutter_drawing_context_set_outline_texture
+                          (EekClutterDrawingContext *context,
+                           EekOutline               *outline,
+                           ClutterActor             *texture);
+ClutterActor             *eek_clutter_drawing_context_get_outline_texture
+                          (EekClutterDrawingContext *context,
+                           EekOutline               *outline);
+
+void                      eek_clutter_drawing_context_set_category_font
+                          (EekClutterDrawingContext *context,
+                           EekKeysymCategory         category,
+                           PangoFontDescription     *fonts);
+PangoFontDescription     *eek_clutter_drawing_context_get_category_font
+                          (EekClutterDrawingContext *context,
+                           EekKeysymCategory         category);
+
+G_END_DECLS
+#endif  /* EEK_CLUTTER_DRAWING_CONTEXT_H */

eek/eek-clutter-key-actor.c

@@ -54,29 +54,11 @@ G_DEFINE_TYPE (EekClutterKeyActor, eek_clutter_key_actor,
 
 struct _EekClutterKeyActorPrivate
 {
+    EekClutterDrawingContext *context;
     EekKey *key;
     ClutterActor *texture;
-    PangoFontDescription *font;
 };
 
-static struct {
-    /* outline pointer -> ClutterTexture */
-    GHashTable *outline_textures;
-
-    /* manually maintain the ref-count of outline_textures to set it
-       to NULL when all the EekClutterKeyActor are destroyed */
-    gint outline_textures_ref_count;
-} texture_cache;
-
-static struct {
-    /* keysym category -> PangoFontDescription * */
-    PangoFontDescription *category_fonts[EEK_KEYSYM_CATEGORY_LAST];
-
-    /* manually maintain the ref-count of category_fonts to set it to
-       NULL when all the EekClutterKeyActor are destroyed */
-    gint category_fonts_ref_count;
-} font_cache;
-
 static ClutterActor *get_texture          (EekClutterKeyActor *actor);
 static void          draw_key_on_layout   (EekClutterKeyActor *actor,
                                            PangoLayout        *layout);
@@ -183,30 +165,14 @@ eek_clutter_key_actor_dispose (GObject *object)
 {
     EekClutterKeyActorPrivate *priv = EEK_CLUTTER_KEY_ACTOR_GET_PRIVATE(object);
 
+    if (priv->context) {
+        g_object_unref (priv->context);
+        priv->context = NULL;
+    }
     if (priv->key) {
         g_object_unref (priv->key);
         priv->key = NULL;
     }
-    if (priv->texture) {
-        /* no need to g_object_unref (priv->texture) */
-        priv->texture = NULL;
-        if (--texture_cache.outline_textures_ref_count == 0) {
-            g_hash_table_unref (texture_cache.outline_textures);
-            texture_cache.outline_textures = NULL;
-        }
-    }
-    if (priv->font) {
-        /* no need to pango_font_description_free (priv->font) */
-        priv->font = NULL;
-        if (--font_cache.category_fonts_ref_count == 0) {
-            gint i;
-
-            for (i = 0; i < EEK_KEYSYM_CATEGORY_LAST; i++) {
-                pango_font_description_free (font_cache.category_fonts[i]);
-                font_cache.category_fonts[i] = NULL;
-            }
-        }
-    }
     G_OBJECT_CLASS (eek_clutter_key_actor_parent_class)->dispose (object);
 }
 
@@ -286,7 +252,6 @@ eek_clutter_key_actor_init (EekClutterKeyActor *self)
     priv = self->priv = EEK_CLUTTER_KEY_ACTOR_GET_PRIVATE(self);
     priv->key = NULL;
     priv->texture = NULL;
-    priv->font = NULL;
     
     clutter_actor_set_reactive (CLUTTER_ACTOR(self), TRUE);
     g_signal_connect (self, "button-press-event",
@@ -296,11 +261,13 @@ eek_clutter_key_actor_init (EekClutterKeyActor *self)
 }
 
 ClutterActor *
-eek_clutter_key_actor_new (EekKey *key)
+eek_clutter_key_actor_new (EekClutterDrawingContext *context, EekKey *key)
 {
     EekClutterKeyActor *actor;
 
     actor = g_object_new (EEK_TYPE_CLUTTER_KEY_ACTOR, NULL);
+    actor->priv->context = context;
+    g_object_ref_sink (actor->priv->context);
     actor->priv->key = key;
     g_object_ref_sink (actor->priv->key);
     return CLUTTER_ACTOR(actor);
@@ -387,17 +354,17 @@ get_texture (EekClutterKeyActor *actor)
     ClutterActor *texture;
     EekOutline *outline;
 
-    if (!texture_cache.outline_textures)
-        texture_cache.outline_textures = g_hash_table_new (g_direct_hash,
-                                                           g_direct_equal);
     outline = eek_key_get_outline (actor->priv->key);
-    texture = g_hash_table_lookup (texture_cache.outline_textures, outline);
+    texture =
+        eek_clutter_drawing_context_get_outline_texture (actor->priv->context,
+                                                         outline);
     if (texture == NULL) {
         texture = create_texture_for_key (actor->priv->key);
-        g_hash_table_insert (texture_cache.outline_textures, outline, texture);
+        eek_clutter_drawing_context_set_outline_texture (actor->priv->context,
+                                                         outline,
+                                                         texture);
     } else
         texture = clutter_clone_new (texture);
-    texture_cache.outline_textures_ref_count++;
     return texture;
 }
 
@@ -410,28 +377,7 @@ draw_key_on_layout (EekClutterKeyActor *self,
     const gchar *label, *empty_label = "";
     EekKeysymCategory category;
     EekBounds bounds;
-
+    PangoFontDescription *font;
-    if (font_cache.category_fonts_ref_count == 0) {
-        EekContainer *keyboard, *section;
-        PangoFontDescription *font;
-        PangoLayout *copy;
-
-        section = EEK_ELEMENT_GET_CLASS(priv->key)->
-            get_parent (EEK_ELEMENT(priv->key));
-        g_return_if_fail (EEK_IS_SECTION(section));
-
-        keyboard = EEK_ELEMENT_GET_CLASS(section)->
-            get_parent (EEK_ELEMENT(section));
-        g_return_if_fail (EEK_IS_KEYBOARD(keyboard));
-        
-        copy = pango_layout_copy (layout);
-        font = pango_font_description_from_string ("Sans");
-        pango_layout_set_font_description (copy, font);
-
-        eek_get_fonts (EEK_KEYBOARD(keyboard), copy,
-                       font_cache.category_fonts);
-        g_object_unref (G_OBJECT(copy));
-    }
 
     keysym = eek_key_get_keysym (priv->key);
     if (keysym == EEK_INVALID_KEYSYM)
@@ -439,11 +385,10 @@ draw_key_on_layout (EekClutterKeyActor *self,
     category = eek_keysym_get_category (keysym);
     if (category == EEK_KEYSYM_CATEGORY_UNKNOWN)
         return;
-    if (!priv->font) {
+
-        priv->font = font_cache.category_fonts[category];
+    font = eek_clutter_drawing_context_get_category_font (priv->context,
-        font_cache.category_fonts_ref_count++;
+                                                          category);
-    }
+    pango_layout_set_font_description (layout, font);
-    pango_layout_set_font_description (layout, priv->font);
 
     eek_element_get_bounds (EEK_ELEMENT(priv->key), &bounds);
     pango_layout_set_width (layout, PANGO_SCALE * bounds.width);

eek/eek-clutter-key-actor.h

@@ -21,6 +21,7 @@
 #define EEK_CLUTTER_KEY_ACTOR_H 1
 
 #include <clutter/clutter.h>
+#include "eek-clutter-drawing-context.h"
 #include "eek-key.h"
 
 G_BEGIN_DECLS
@@ -54,8 +55,10 @@ struct _EekClutterKeyActorClass
     void (* released) (EekClutterKeyActor *self);
 };
 
-GType eek_clutter_key_actor_get_type (void) G_GNUC_CONST;
+GType         eek_clutter_key_actor_get_type
-ClutterActor *eek_clutter_key_actor_new (EekKey *key);
+                                        (void) G_GNUC_CONST;
+ClutterActor *eek_clutter_key_actor_new (EekClutterDrawingContext *context,
+                                         EekKey                   *key);
 
 G_END_DECLS
 #endif  /* EEK_CLUTTER_KEY_ACTOR_H */

eek/eek-clutter-key.c

@@ -36,6 +36,7 @@ G_DEFINE_TYPE (EekClutterKey, eek_clutter_key, EEK_TYPE_KEY);
 
 struct _EekClutterKeyPrivate
 {
+    EekClutterDrawingContext *context;
     ClutterActor *actor;
 };
 
@@ -91,6 +92,10 @@ eek_clutter_key_dispose (GObject *object)
 {
     EekClutterKeyPrivate *priv = EEK_CLUTTER_KEY_GET_PRIVATE(object);
 
+    if (priv->context) {
+        g_object_unref (priv->context);
+        priv->context = NULL;
+    }
     if (priv->actor) {
         g_object_unref (priv->actor);
         priv->actor = NULL;
@@ -129,9 +134,26 @@ ClutterActor *
 eek_clutter_key_get_actor (EekClutterKey *key)
 {
     EekClutterKeyPrivate *priv = EEK_CLUTTER_KEY_GET_PRIVATE(key);
+
     if (!priv->actor) {
-        priv->actor = eek_clutter_key_actor_new (EEK_KEY(key));
+        g_return_val_if_fail (priv->context, NULL);
+        priv->actor = eek_clutter_key_actor_new (priv->context, EEK_KEY(key));
         g_object_ref_sink (priv->actor);
     }
     return priv->actor;
 }
+
+EekKey *
+eek_clutter_key_new (EekClutterDrawingContext *context, gint column, gint row)
+{
+    EekClutterKey *key;
+
+    g_return_val_if_fail (context, NULL);
+    key = g_object_new (EEK_TYPE_CLUTTER_KEY,
+                        "column", column,
+                        "row", row,
+                        NULL);
+    key->priv->context = context;
+    g_object_ref_sink (key->priv->context);
+    return EEK_KEY(key);
+}

eek/eek-clutter-key.h

@@ -21,6 +21,7 @@
 #define EEK_CLUTTER_KEY_H 1
 
 #include <clutter/clutter.h>
+#include "eek-clutter-drawing-context.h"
 #include "eek-key.h"
 
 G_BEGIN_DECLS
@@ -50,8 +51,11 @@ struct _EekClutterKeyClass
     EekKeyClass parent_class;
 };
 
-GType           eek_clutter_key_get_type  (void) G_GNUC_CONST;
+GType         eek_clutter_key_get_type  (void) G_GNUC_CONST;
-ClutterActor   *eek_clutter_key_get_actor (EekClutterKey *key);
+EekKey *      eek_clutter_key_new       (EekClutterDrawingContext *context,
+                                         gint                      column,
+                                         gint                      row);
+ClutterActor *eek_clutter_key_get_actor (EekClutterKey            *key);
 
 G_END_DECLS
 #endif  /* EEK_CLUTTER_KEY_H */

eek/eek-clutter-keyboard.c

@@ -29,6 +29,7 @@
 #endif  /* HAVE_CONFIG_H */
 
 #include "eek-clutter-keyboard.h"
+#include "eek-clutter-drawing-context.h"
 #include "eek-keyboard.h"
 
 G_DEFINE_TYPE (EekClutterKeyboard, eek_clutter_keyboard, EEK_TYPE_KEYBOARD);
@@ -39,7 +40,9 @@ G_DEFINE_TYPE (EekClutterKeyboard, eek_clutter_keyboard, EEK_TYPE_KEYBOARD);
 
 struct _EekClutterKeyboardPrivate
 {
+    EekClutterDrawingContext *context;
     ClutterActor *actor;
+
     guint key_press_event_handler;
     guint key_release_event_handler;
 };
@@ -92,10 +95,16 @@ key_released_event (EekSection  *section,
 static EekSection *
 eek_clutter_keyboard_real_create_section (EekKeyboard *self)
 {
+    EekClutterKeyboardPrivate *priv = EEK_CLUTTER_KEYBOARD_GET_PRIVATE(self);
     EekSection *section;
     ClutterActor *actor;
 
-    section = g_object_new (EEK_TYPE_CLUTTER_SECTION, NULL);
+    if (!priv->context) {
+        priv->context = eek_clutter_drawing_context_new ();
+        g_object_ref_sink (G_OBJECT(priv->context));
+    }
+
+    section = eek_clutter_section_new (priv->context);
     g_return_val_if_fail (section, NULL);
 
     g_signal_connect (section, "key-pressed",
@@ -119,6 +128,10 @@ eek_clutter_keyboard_dispose (GObject *object)
 {
     EekClutterKeyboardPrivate *priv = EEK_CLUTTER_KEYBOARD_GET_PRIVATE(object);
 
+    if (priv->context) {
+        g_object_unref (G_OBJECT(priv->context));
+        priv->context = NULL;
+    }
     if (priv->actor) {
         ClutterActor *stage;
 
@@ -238,6 +251,31 @@ on_clutter_realize (ClutterActor *actor, gpointer user_data)
                       G_CALLBACK (on_clutter_key_release_event), keyboard);
 }
 
+static void
+update_category_fonts (EekClutterKeyboard *keyboard)
+{
+    EekClutterKeyboardPrivate *priv =
+        EEK_CLUTTER_KEYBOARD_GET_PRIVATE(keyboard);
+    PangoContext *context;
+    PangoLayout *layout;
+    PangoFontDescription *fonts[EEK_KEYSYM_CATEGORY_LAST], *base_font;
+    gint i;
+
+    context = clutter_actor_get_pango_context (priv->actor);
+    layout = pango_layout_new (context);
+    base_font = pango_font_description_from_string ("Sans");
+    pango_layout_set_font_description (layout, base_font);
+    pango_font_description_free (base_font);
+    eek_get_fonts (EEK_KEYBOARD(keyboard), layout, &fonts);
+    for (i = 0; i < EEK_KEYSYM_CATEGORY_LAST; i++) {
+        eek_clutter_drawing_context_set_category_font (priv->context,
+                                                       i,
+                                                       fonts[i]);
+        pango_font_description_free (fonts[i]);
+    }
+    g_object_unref (G_OBJECT(layout));
+}
+
 ClutterActor *
 eek_clutter_keyboard_get_actor (EekClutterKeyboard *keyboard)
 {
@@ -249,7 +287,9 @@ eek_clutter_keyboard_get_actor (EekClutterKeyboard *keyboard)
         g_signal_connect (priv->actor, "realize",
                           G_CALLBACK (on_clutter_realize), keyboard);
         g_return_val_if_fail (priv->actor, NULL);
+
         eek_keyboard_realize (EEK_KEYBOARD(keyboard));
+        update_category_fonts (keyboard);
     }
     return priv->actor;
 }

eek/eek-clutter-section.c

@@ -35,6 +35,7 @@ G_DEFINE_TYPE (EekClutterSection, eek_clutter_section, EEK_TYPE_SECTION);
 
 struct _EekClutterSectionPrivate
 {
+    EekClutterDrawingContext *context;
     ClutterActor *actor;
 };
 
@@ -101,6 +102,7 @@ eek_clutter_section_real_create_key (EekSection  *self,
                                      gint         column,
                                      gint         row)
 {
+    EekClutterSectionPrivate *priv = EEK_CLUTTER_SECTION_GET_PRIVATE(self);
     EekKey *key;
     gint num_columns, num_rows;
     EekOrientation orientation;
@@ -111,10 +113,7 @@ eek_clutter_section_real_create_key (EekSection  *self,
     eek_section_get_row (self, row, &num_columns, &orientation);
     g_return_val_if_fail (column < num_columns, NULL);
 
-    key = g_object_new (EEK_TYPE_CLUTTER_KEY,
+    key = eek_clutter_key_new (priv->context, column, row);
-                        "column", column,
-                        "row", row,
-                        NULL);
     g_return_val_if_fail (key, NULL);
     
     g_signal_connect (key, "pressed", G_CALLBACK(pressed_event), self);
@@ -136,6 +135,10 @@ eek_clutter_section_dispose (GObject *object)
 {
     EekClutterSectionPrivate *priv = EEK_CLUTTER_SECTION_GET_PRIVATE(object);
 
+    if (priv->context) {
+        g_object_unref (priv->context);
+        priv->context = NULL;
+    }
     if (priv->actor) {
         g_object_unref (priv->actor);
         priv->actor = NULL;
@@ -177,3 +180,16 @@ eek_clutter_section_get_actor (EekClutterSection *section)
     }
     return priv->actor;
 }
+
+EekSection *
+eek_clutter_section_new (EekClutterDrawingContext *context)
+{
+    EekClutterSection *section;
+
+    g_return_val_if_fail (context, NULL);
+    section = g_object_new (EEK_TYPE_CLUTTER_SECTION, NULL);
+    section->priv->context = context;
+    g_object_ref_sink (G_OBJECT(section->priv->context));
+
+    return EEK_SECTION(section);
+}

eek/eek-clutter-section.h

@@ -20,6 +20,7 @@
 #ifndef EEK_CLUTTER_SECTION_H
 #define EEK_CLUTTER_SECTION_H 1
 
+#include "eek-clutter-drawing-context.h"
 #include "eek-clutter-key.h"
 #include "eek-section.h"
 
@@ -49,8 +50,9 @@ struct _EekClutterSectionClass
     EekSectionClass parent_class;
 };
 
-GType               eek_clutter_section_get_type  (void) G_GNUC_CONST;
+GType         eek_clutter_section_get_type  (void) G_GNUC_CONST;
-ClutterActor       *eek_clutter_section_get_actor (EekClutterSection *section);
+EekSection *  eek_clutter_section_new       (EekClutterDrawingContext *context);
+ClutterActor *eek_clutter_section_get_actor (EekClutterSection        *section);
 
 G_END_DECLS
 #endif  /* EEK_CLUTTER_SECTION_H */

eek/eek-container.c

@@ -61,7 +61,6 @@ eek_container_real_add_child (EekContainer *self,
     g_object_ref_sink (child);
 
     priv->children = g_slist_prepend (priv->children, child);
-    EEK_ELEMENT_GET_CLASS(child)->set_parent (child, self);
 }
 
 static void
@@ -76,7 +75,6 @@ eek_container_real_remove_child (EekContainer *self,
     g_return_if_fail (head);
     g_object_unref (child);
     priv->children = g_slist_remove_link (priv->children, head);
-    EEK_ELEMENT_GET_CLASS(child)->set_parent (child, NULL);
 }
 
 static void

eek/eek-drawing.c

@@ -87,26 +87,21 @@ egf_key_callback (EekElement *element,
 {
     EekKey *key = EEK_KEY(element);
     GetFontSizeCallbackData *data = user_data;
-    guint *keysyms;
-    gint num_groups, num_levels, i;
     gdouble font_size;
+    guint keysym;
+    EekBounds bounds;
+    const gchar *label;
 
-    eek_key_get_keysyms (key, &keysyms, &num_groups, &num_levels);
+    keysym = eek_key_get_keysym (key);
-    for (i = 0; i < num_groups * num_levels; i++) {
+    if (keysym == EEK_INVALID_KEYSYM ||
-        guint keysym = keysyms[i];
+        eek_keysym_get_category (keysym) != data->category)
-        EekBounds bounds;
+        return;
-        const gchar *label;
 
-        if (keysym == EEK_INVALID_KEYSYM ||
+    eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
-            eek_keysym_get_category (keysym) != data->category)
+    label = eek_keysym_to_string (keysym);
-            continue;
+    font_size = get_font_size (label, &bounds, data->layout);
-
+    if (font_size < data->font_size && font_size >= data->minimum_font_size)
-        eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
+        data->font_size = font_size;
-        label = eek_keysym_to_string (keysym);
-        font_size = get_font_size (label, &bounds, data->layout);
-        if (font_size < data->font_size && font_size >= data->minimum_font_size)
-            data->font_size = font_size;
-    }
 }
 
 static void

eek/eek-element.c

@@ -33,7 +33,6 @@
 #endif  /* HAVE_CONFIG_H */
 
 #include "eek-element.h"
-#include "eek-container.h"
 
 enum {
     PROP_0,
@@ -52,30 +51,8 @@ struct _EekElementPrivate
 {
     gchar *name;
     EekBounds bounds;
-    EekContainer *parent;
 };
 
-static void
-eek_element_real_set_parent (EekElement *self,
-                             EekContainer *parent)
-{
-    EekElementPrivate *priv = EEK_ELEMENT_GET_PRIVATE(self);
-
-    if (parent) {
-        g_return_if_fail (EEK_IS_CONTAINER(parent));
-        g_object_ref_sink (G_OBJECT(parent));
-    } else if (priv->parent)
-        g_object_unref (G_OBJECT (priv->parent));
-    priv->parent = parent;
-}
-
-static EekContainer *
-eek_element_real_get_parent (EekElement *self)
-{
-    EekElementPrivate *priv = EEK_ELEMENT_GET_PRIVATE(self);
-    return priv->parent;
-}
-
 static void
 eek_element_real_set_name (EekElement  *self,
                            const gchar *name)
@@ -117,17 +94,6 @@ eek_element_real_get_bounds (EekElement *self,
     g_object_notify (G_OBJECT(self), "bounds");
 }
 
-static void
-eek_element_dispose (GObject *object)
-{
-    EekElementPrivate *priv = EEK_ELEMENT_GET_PRIVATE(object);
-
-    if (priv->parent) {
-        g_object_unref (G_OBJECT(priv->parent));
-        priv->parent = NULL;
-    }
-}
-
 static void
 eek_element_finalize (GObject *object)
 {
@@ -190,8 +156,6 @@ eek_element_class_init (EekElementClass *klass)
     g_type_class_add_private (gobject_class,
                               sizeof (EekElementPrivate));
 
-    klass->set_parent = eek_element_real_set_parent;
-    klass->get_parent = eek_element_real_get_parent;
     klass->set_name = eek_element_real_set_name;
     klass->get_name = eek_element_real_get_name;
     klass->set_bounds = eek_element_real_set_bounds;
@@ -200,7 +164,6 @@ eek_element_class_init (EekElementClass *klass)
     gobject_class->set_property = eek_element_set_property;
     gobject_class->get_property = eek_element_get_property;
     gobject_class->finalize     = eek_element_finalize;
-    gobject_class->dispose     = eek_element_dispose;
 
     /**
      * EekElement:name:

eek/eek-element.h

@@ -47,9 +47,6 @@ struct _EekElementClass
     /*< private >*/
     GInitiallyUnownedClass parent_class;
 
-    void                  (* set_parent) (EekElement   *self,
-                                          EekContainer *parent);
-    EekContainer         *(* get_parent) (EekElement   *self);
     void                  (* set_name)   (EekElement   *self,
                                           const gchar  *name);
 

eek/eek-keysym.h

@@ -20,6 +20,8 @@
 #ifndef EEK_KEYSYM_H
 #define EEK_KEYSYM_H 1
 
+#include <glib-object.h>
+
 #define EEK_INVALID_KEYSYM ((guint)(-1))
 #define EEK_INVALID_KEYCODE ((guint)(-1))