[gnome-control-center] region: Keep format chooser labels centered

[Rui Matos <rtcm src gnome org>]

commit 24bb46eb44e01ecaf933e6753e55d92a11c26350
Author: Rui Matos <tiagomatos gmail com>
Date:   Fri Mar 15 18:37:33 2013 +0100

    region: Keep format chooser labels centered
    
    In order to prevent the labels from moving around when hiding and
    showing the check mark we need to keep the check mark always visible
    and instead tweak its opacity.
    
    We also add an always transparent widget the same size as the check
    mark on the other side of the label to make sure that the label is
    globally centered.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695536

 panels/region/cc-format-chooser.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/panels/region/cc-format-chooser.c b/panels/region/cc-format-chooser.c
index 418d012..f7d4908 100644
--- a/panels/region/cc-format-chooser.c
+++ b/panels/region/cc-format-chooser.c
@@ -159,7 +159,7 @@ set_locale_id (GtkDialog   *chooser,
                         gboolean is_extra;
 
                         /* mark as selected */
-                        gtk_widget_show (check);
+                        gtk_widget_set_opacity (check, 1.0);
 
                         /* make sure this row is shown */
                         is_extra = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (row), "is-extra"));
@@ -170,7 +170,7 @@ set_locale_id (GtkDialog   *chooser,
 
                 } else {
                         /* mark as unselected */
-                        gtk_widget_hide (check);
+                        gtk_widget_set_opacity (check, 0.0);
                 }
         }
         g_list_free (children);
@@ -232,9 +232,17 @@ region_widget_new (const gchar *locale_id,
 
         widget = padded_label_new (locale_name, is_extra);
 
+        /* We add a check on each side of the label to keep it centered. */
         check = gtk_image_new ();
         gtk_image_set_from_icon_name (GTK_IMAGE (check), "object-select-symbolic", GTK_ICON_SIZE_MENU);
-        gtk_widget_set_no_show_all (check, TRUE);
+        gtk_widget_set_opacity (check, 0.0);
+        g_object_set (check, "icon-size", GTK_ICON_SIZE_MENU, NULL);
+        gtk_box_pack_start (GTK_BOX (widget), check, FALSE, FALSE, 0);
+        gtk_box_reorder_child (GTK_BOX (widget), check, 0);
+
+        check = gtk_image_new ();
+        gtk_image_set_from_icon_name (GTK_IMAGE (check), "object-select-symbolic", GTK_ICON_SIZE_MENU);
+        gtk_widget_set_opacity (check, 0.0);
         g_object_set (check, "icon-size", GTK_ICON_SIZE_MENU, NULL);
         gtk_box_pack_start (GTK_BOX (widget), check, FALSE, FALSE, 0);