[rhythmbox] entry-view: scroll to the playing entry on clicking the column header

[Jonathan Matthew <jmatthew src gnome org>]

commit 918a3698461fe244a107d7ce9accf4c32b3dd78f
Author: Jonathan Matthew <jonathan d14n org>
Date:   Thu Aug 22 09:03:32 2013 +1000

    entry-view: scroll to the playing entry on clicking the column header
    
    This seems like a reasonable thing for the playing column header to do.
    It didn't do anything before.

 widgets/rb-entry-view.c |   30 ++++++++++++++++++++++--------
 1 files changed, 22 insertions(+), 8 deletions(-)
---
diff --git a/widgets/rb-entry-view.c b/widgets/rb-entry-view.c
index ef82434..f5faf8c 100644
--- a/widgets/rb-entry-view.c
+++ b/widgets/rb-entry-view.c
@@ -153,6 +153,8 @@ static void rb_entry_view_rated_cb (RBCellRendererRating *cellrating,
 static void rb_entry_view_pixbuf_clicked_cb (RBEntryView *view,
                                             const char *path,
                                             RBCellRendererPixbuf *cellpixbuf);
+static void rb_entry_view_playing_column_clicked_cb (GtkTreeViewColumn *column,
+                                                    RBEntryView *view);
 static gboolean rb_entry_view_button_press_cb (GtkTreeView *treeview,
                                              GdkEventButton *event,
                                              RBEntryView *view);
@@ -1779,6 +1781,7 @@ static void
 rb_entry_view_constructed (GObject *object)
 {
        RBEntryView *view;
+       RhythmDBQueryModel *query_model;
 
        RB_CHAIN_GOBJECT_METHOD (rb_entry_view_parent_class, constructed, object);
 
@@ -1857,10 +1860,9 @@ rb_entry_view_constructed (GObject *object)
 
                image_widget = gtk_image_new_from_icon_name ("audio-volume-high-symbolic", 
GTK_ICON_SIZE_MENU);
                gtk_tree_view_column_set_widget (column, image_widget);
-               gtk_widget_show (image_widget);
+               gtk_widget_show_all (image_widget);
 
                gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
-               gtk_tree_view_column_set_clickable (column, FALSE);
                gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &width, NULL);
                gtk_tree_view_column_set_fixed_width (column, width + 5);
                gtk_tree_view_append_column (GTK_TREE_VIEW (view->priv->treeview), column);
@@ -1871,14 +1873,17 @@ rb_entry_view_constructed (GObject *object)
 
                gtk_widget_set_tooltip_text (gtk_tree_view_column_get_widget (column),
                                             _("Now Playing"));
-       }
 
-       {
-               RhythmDBQueryModel *query_model;
-               query_model = rhythmdb_query_model_new_empty (view->priv->db);
-               rb_entry_view_set_model (view, RHYTHMDB_QUERY_MODEL (query_model));
-               g_object_unref (query_model);
+               g_signal_connect (column,
+                                 "clicked",
+                                 G_CALLBACK (rb_entry_view_playing_column_clicked_cb),
+                                 view);
+               gtk_tree_view_column_set_clickable (column, TRUE);
        }
+
+       query_model = rhythmdb_query_model_new_empty (view->priv->db);
+       rb_entry_view_set_model (view, RHYTHMDB_QUERY_MODEL (query_model));
+       g_object_unref (query_model);
 }
 
 static void
@@ -1933,6 +1938,15 @@ rb_entry_view_pixbuf_clicked_cb (RBEntryView          *view,
 }
 
 static void
+rb_entry_view_playing_column_clicked_cb (GtkTreeViewColumn *column,
+                                        RBEntryView *view)
+{
+       if (view->priv->playing_entry) {
+               rb_entry_view_scroll_to_entry (view, view->priv->playing_entry);
+       }
+}
+
+static void
 rb_entry_view_playing_song_changed (RBShellPlayer *player,
                                    RhythmDBEntry *entry,
                                    RBEntryView *view)