+void Ruler::mouseMoveEvent(QMouseEvent *e)
+{
+ if (!(e->buttons() & Qt::LeftButton))
+ return;
+
+ if ((e->pos() - _mouse_down_point).manhattanLength() <
+ QApplication::startDragDistance())
+ return;
+
+ _dragging = true;
+
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock())
+ m->set_time(_view.offset() +
+ ((double)e->x() + 0.5) * _view.scale());
+}
+
+void Ruler::mousePressEvent(QMouseEvent *e)
+{
+ if (e->buttons() & Qt::LeftButton)
+ {
+ _mouse_down_point = e->pos();
+
+ _grabbed_marker.reset();
+
+ clear_selection();
+
+ if (_view.cursors_shown()) {
+ CursorPair &cursors = _view.cursors();
+ if (cursors.first()->get_label_rect(
+ rect()).contains(e->pos()))
+ _grabbed_marker = cursors.first();
+ else if (cursors.second()->get_label_rect(
+ rect()).contains(e->pos()))
+ _grabbed_marker = cursors.second();
+ }
+
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock())
+ m->select();
+
+ selection_changed();
+ }
+}
+
+void Ruler::mouseReleaseEvent(QMouseEvent *)
+{
+ using pv::widgets::Popup;
+
+ if (!_dragging)
+ if (shared_ptr<TimeMarker> m = _grabbed_marker.lock()) {
+ Popup *const p = m->create_popup(&_view);
+ p->set_position(mapToGlobal(QPoint(m->get_x(),
+ height())), Popup::Bottom);
+ p->show();
+ }
+
+ _dragging = false;
+ _grabbed_marker.reset();
+}
+