+void Header::mousePressEvent(QMouseEvent *event)
+{
+ assert(event);
+
+ const vector< shared_ptr<Signal> > &sigs =
+ _view.session().get_signals();
+
+ if(~QApplication::keyboardModifiers() & Qt::ControlModifier) {
+ // Unselect all other signals because the Ctrl is not
+ // pressed
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+ s->select(false);
+ }
+
+ // Select the signal if it has been clicked
+ const shared_ptr<Signal> mouse_over_signal =
+ get_mouse_over_signal(event->pos());
+ if(mouse_over_signal)
+ mouse_over_signal->select(!mouse_over_signal->selected());
+
+ if(event->button() & Qt::LeftButton) {
+ _mouse_down_point = event->pos();
+
+ // Save the current signal offsets
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+ _mouse_down_signal_offsets[s.get()] =
+ s->get_v_offset();
+ }
+
+ update();
+}
+
+void Header::mouseReleaseEvent(QMouseEvent *event)
+{
+ assert(event);
+ if(event->button() == Qt::LeftButton)
+ _mouse_down_signal_offsets.clear();
+}
+