[gnome-control-center/wip/universal-access: 14/14] universal-access: implement contrast option combo box

[Thomas Wood <thos src gnome org>]

commit afe05a44fce69a654c5c02c700e2d670bf9d01f3
Author: Thomas Wood <thomas wood intel com>
Date:   Thu Jun 3 18:08:50 2010 +0100

    universal-access: implement contrast option combo box
    
    The "Contrast" combo box sets and reads the GTK+ theme and icon theme
    values. The known contrast themes are stored in the combo box model; any
    other values are treated as "Normal" contrast.

 panels/universal-access/cc-ua-panel.c |   99 +++++++++++++++++++++++++++++++++
 panels/universal-access/uap.ui        |    6 ++
 2 files changed, 105 insertions(+), 0 deletions(-)
---
diff --git a/panels/universal-access/cc-ua-panel.c b/panels/universal-access/cc-ua-panel.c
index fdfea89..0be9786 100644
--- a/panels/universal-access/cc-ua-panel.c
+++ b/panels/universal-access/cc-ua-panel.c
@@ -232,6 +232,104 @@ gconf_on_off_peditor_new (CcUaPanelPrivate  *priv,
   gconf_client_notify (priv->client, key);
 }
 
+/* seeing section */
+#define GTK_THEME_KEY "/desktop/gnome/interface/gtk_theme"
+#define ICON_THEME_KEY "/desktop/gnome/interface/icon_theme"
+#define CONTRAST_MODEL_THEME_COLUMN 3
+
+static void
+contrast_notify_cb (GConfClient *client,
+                    guint        cnxn_id,
+                    GConfEntry  *entry,
+                    CcUaPanel   *panel)
+{
+  CcUaPanelPrivate *priv = panel->priv;
+  GtkTreeIter iter;
+  GtkTreeModel *model;
+  GtkWidget *combo;
+  gboolean valid;
+  gchar *gconf_value;
+
+  gconf_value = gconf_client_get_string (client, GTK_THEME_KEY, NULL);
+
+  combo = WID (priv->builder, "seeing_contrast_combobox");
+  model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
+
+  /* see if there is a matching theme name in the combobox model */
+  valid = gtk_tree_model_get_iter_first (model, &iter);
+  while (valid)
+    {
+      gchar *value;
+
+      gtk_tree_model_get (model, &iter,
+                          CONTRAST_MODEL_THEME_COLUMN, &value,
+                          -1);
+
+      if (!g_strcmp0 (value, gconf_value))
+        {
+          gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);
+          g_free (value);
+          break;
+        }
+
+      g_free (value);
+      valid = gtk_tree_model_iter_next (model, &iter);
+    }
+
+  /* if a value for the current theme was not found in the combobox, set to the
+   * "normal" option */
+  if (!valid)
+    {
+      gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 1);
+    }
+}
+
+static void
+contrast_combobox_changed_cb (GtkComboBox *box,
+                              CcUaPanel   *panel)
+{
+  CcUaPanelPrivate *priv = panel->priv;
+  gchar *theme_name = NULL;
+  GtkTreeIter iter;
+
+  gtk_combo_box_get_active_iter (box, &iter);
+
+  gtk_tree_model_get (gtk_combo_box_get_model (box), &iter,
+                      CONTRAST_MODEL_THEME_COLUMN, &theme_name,
+                      -1);
+
+  if (g_strcmp0 (theme_name, ""))
+    {
+      gconf_client_set_string (priv->client, GTK_THEME_KEY, theme_name, NULL);
+      gconf_client_set_string (priv->client, ICON_THEME_KEY, theme_name, NULL);
+    }
+  else
+    {
+      gconf_client_unset (priv->client, GTK_THEME_KEY, NULL);
+      gconf_client_unset (priv->client, ICON_THEME_KEY, NULL);
+    }
+
+  g_free (theme_name);
+}
+
+static void
+cc_ua_panel_init_seeing (CcUaPanel *self)
+{
+  CcUaPanelPrivate *priv = self->priv;
+
+  gconf_client_add_dir (priv->client, "/desktop/gnome/interface",
+                        GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+
+  gconf_client_notify_add (priv->client, GTK_THEME_KEY,
+                           (GConfClientNotifyFunc) contrast_notify_cb,
+                           self, NULL, NULL);
+
+  g_signal_connect (WID (priv->builder, "seeing_contrast_combobox"), "changed",
+                    G_CALLBACK (contrast_combobox_changed_cb), self);
+  gconf_client_notify (priv->client, GTK_THEME_KEY);
+}
+
+
 /* hearing/sound section */
 static void
 visual_bell_type_notify_cb (GConfClient *client,
@@ -472,6 +570,7 @@ cc_ua_panel_init (CcUaPanel *self)
   cc_ua_panel_init_keyboard (self);
   cc_ua_panel_init_mouse (self);
   cc_ua_panel_init_hearing (self);
+  cc_ua_panel_init_seeing (self);
 
   widget = (GtkWidget*) gtk_builder_get_object (priv->builder,
                                                 "universal_access_box");
diff --git a/panels/universal-access/uap.ui b/panels/universal-access/uap.ui
index eb14dbd..e24463e 100644
--- a/panels/universal-access/uap.ui
+++ b/panels/universal-access/uap.ui
@@ -2732,27 +2732,33 @@
       <column type="gdouble"/>
       <!-- column-name contrasts_markup -->
       <column type="gchararray"/>
+      <!-- column-name themename -->
+      <column type="gchararray"/>
     </columns>
     <data>
       <row>
         <col id="0" translatable="yes">Low</col>
         <col id="1">1.5</col>
         <col id="2" translatable="yes">&lt;span size="x-large"&gt;Low&lt;/span&gt;</col>
+        <col id="3" translatable="yes">LowContrast</col>
       </row>
       <row>
         <col id="0" translatable="yes">Normal</col>
         <col id="1">1.5</col>
         <col id="2" translatable="yes">&lt;span size="x-large"&gt;Normal&lt;/span&gt;</col>
+        <col id="3" translatable="yes"></col>
       </row>
       <row>
         <col id="0" translatable="yes">High</col>
         <col id="1">1.5</col>
         <col id="2" translatable="yes">&lt;span size="x-large"&gt;High&lt;/span&gt;</col>
+        <col id="3" translatable="yes">HighContrast</col>
       </row>
       <row>
         <col id="0" translatable="yes">High/Inverse</col>
         <col id="1">1.5</col>
         <col id="2" translatable="yes">&lt;span size="x-large"&gt;High/Inverse&lt;/span&gt;</col>
+        <col id="3" translatable="yes">HighContrastInverse</col>
       </row>
     </data>
   </object>