track enter events on pianoroll to set current editing context

gtk2_ardour/pianoroll.cc

@@ -95,6 +95,13 @@ Pianoroll::~Pianoroll ()
 	delete bindings;
 }
 
+bool
+Pianoroll::enter (GdkEventCrossing*)
+{
+	switch_editing_context (this);
+	return false;
+}
+
 void
 Pianoroll::load_bindings ()
 {
@@ -291,7 +298,9 @@ Pianoroll::build_upper_toolbar ()
 
 	Bindings* pr_bindings = Bindings::get_bindings (X_("Pianoroll"));
 	_toolbox.set_data (X_("ardour-bindings"), pr_bindings);
+
 	_contents.add (_toolbox);
+	_contents.signal_enter_notify_event().connect (sigc::mem_fun (*this, &Pianoroll::enter), false);
 }
 
 void

gtk2_ardour/pianoroll.h

@@ -281,4 +281,5 @@ class Pianoroll : public CueEditor
 	std::pair<Temporal::timepos_t,Temporal::timepos_t> max_zoom_extent() const;
 
 	void point_selection_changed ();
+	bool enter (GdkEventCrossing*);
 };

gtk2_ardour/pianoroll_window.cc

@@ -30,8 +30,8 @@ PianorollWindow::PianorollWindow (std::string const & name, Session& s)
 	pianoroll->set_session (&s);
 	pianoroll->viewport().set_size_request (600, 120);
 
-	add (pianoroll->toolbox());
-	pianoroll->toolbox().show ();
+	add (pianoroll->contents());
+	pianoroll->contents().show ();
 }
 
 PianorollWindow::~PianorollWindow ()