commit d32e823aa730a91f3555a1d5ea0821eae52e991b
Author: Leonid Evdokimov <leon@darkk.net.ru>
Date:   Sun Jul 19 18:24:59 2009 +0700

    Mouse scroll shows next label of the scroll box.

diff --git a/panel-plugin/weather-scrollbox.c b/panel-plugin/weather-scrollbox.c
index 7a36cd7..752ccf5 100644
--- a/panel-plugin/weather-scrollbox.c
+++ b/panel-plugin/weather-scrollbox.c
@@ -445,6 +445,12 @@ gtk_scrollbox_expose (GtkWidget      *widget,
 }
 
 
+void
+gtk_scrollbox_next_label(GtkScrollbox *self)
+{
+  stop_callback (self);
+  start_draw_down (self);
+}
 
 void
 gtk_scrollbox_enablecb (GtkScrollbox *self,
diff --git a/panel-plugin/weather-scrollbox.h b/panel-plugin/weather-scrollbox.h
index 78a3a7c..c4a1197 100644
--- a/panel-plugin/weather-scrollbox.h
+++ b/panel-plugin/weather-scrollbox.h
@@ -64,6 +64,8 @@ void gtk_scrollbox_clear (GtkScrollbox * self);
 
 void gtk_scrollbox_set_animate(GtkScrollbox *self, gboolean animate);
 
+void gtk_scrollbox_next_label(GtkScrollbox *self);
+
 G_END_DECLS
 
 #endif
diff --git a/panel-plugin/weather.c b/panel-plugin/weather.c
index d26ea52..1a9f778 100644
--- a/panel-plugin/weather.c
+++ b/panel-plugin/weather.c
@@ -655,6 +655,22 @@ cb_click (GtkWidget      *widget,
   return FALSE;
 }
 
+static gboolean
+cb_scroll (GtkWidget      *widget,
+           GdkEventScroll *event,
+           gpointer        user_data)
+{
+  xfceweather_data *data = (xfceweather_data *) user_data;
+
+  if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_DOWN)
+    {
+      gtk_scrollbox_next_label(GTK_SCROLLBOX(data->scrollbox));
+    }
+
+  return FALSE;
+}
+
+
 static void
 mi_click (GtkWidget *widget,
           gpointer   user_data)
@@ -816,6 +832,8 @@ xfceweather_create_control (XfcePanelPlugin *plugin)
 
   g_signal_connect (G_OBJECT (data->tooltipbox), "button-press-event",
                     G_CALLBACK (cb_click), data);
+  g_signal_connect (G_OBJECT (data->tooltipbox), "scroll-event",
+                    G_CALLBACK (cb_scroll), data);
   gtk_widget_add_events(data->scrollbox, GDK_BUTTON_PRESS_MASK);
 
   /* add refresh button to right click menu, for people who missed the middle mouse click feature */