views: use the new GcalClock to redraw

Instead of having each view manage it's own timeout (or
even worse, making GcalWindow manage it), use the newly
introduced GcalClock API to do that.

src/views/gcal-week-grid.c

@@ -59,7 +59,6 @@ struct _GcalWeekGrid
   GcalRangeTree      *events;
 
   gboolean            children_changed;
-  gint                redraw_timeout_id;
 
   /*
    * These fields are "cells" rather than minutes. Each cell
@@ -250,12 +249,6 @@ gcal_week_grid_finalize (GObject *object)
   g_clear_pointer (&self->events, gcal_range_tree_unref);
   g_clear_pointer (&self->active_date, g_free);
 
-  if (self->redraw_timeout_id > 0)
-    {
-      g_source_remove (self->redraw_timeout_id);
-      self->redraw_timeout_id = 0;
-    }
-
   G_OBJECT_CLASS (gcal_week_grid_parent_class)->finalize (object);
 }
 
@@ -418,14 +411,6 @@ get_today_column (GcalWeekGrid *self)
   return days_diff;
 }
 
-static gboolean
-on_redraw_timeout_cb (gpointer data)
-{
-  gtk_widget_queue_draw (data);
-
-  return G_SOURCE_CONTINUE;
-}
-
 static gboolean
 gcal_week_grid_draw (GtkWidget *widget,
                      cairo_t   *cr)
@@ -588,14 +573,6 @@ gcal_week_grid_draw (GtkWidget *widget,
       gtk_style_context_restore (context);
     }
 
-  /* Fire the redraw timeout if needed */
-  if (self->redraw_timeout_id == 0)
-    {
-      self->redraw_timeout_id = g_timeout_add_seconds (5,
-                                                       on_redraw_timeout_cb,
-                                                       self);
-    }
-
   return FALSE;
 }
 
@@ -1124,6 +1101,11 @@ gcal_week_grid_set_manager (GcalWeekGrid *self,
   g_return_if_fail (GCAL_IS_WEEK_GRID (self));
 
   self->manager = manager;
+
+  g_signal_connect_swapped (gcal_manager_get_clock (manager),
+                            "minute-changed",
+                            G_CALLBACK (gtk_widget_queue_draw),
+                            self);
 }
 
 void