assert(event);
if (event->button() & Qt::LeftButton) {
+ if (event->modifiers() & Qt::ShiftModifier)
+ view_.show_cursors(false);
+
mouse_down_point_ = event->pos();
+ mouse_down_offset_ = view_.offset() + event->pos().x() * view_.scale();
mouse_down_item_ = get_mouse_over_item(event->pos());
mouse_left_press_event(event);
}
if (!event->buttons())
item_hover(get_mouse_over_item(event->pos()), event->pos());
- else if (event->buttons() & Qt::LeftButton) {
- if (!item_dragging_) {
- if ((event->pos() - mouse_down_point_).manhattanLength() <
- QApplication::startDragDistance())
- return;
- if (!accept_drag())
- return;
+ if (event->buttons() & Qt::LeftButton) {
+ if (event->modifiers() & Qt::ShiftModifier) {
+ // Cursor drag
+ pv::util::Timestamp current_offset = view_.offset() + event->pos().x() * view_.scale();
- item_dragging_ = true;
- }
+ const int drag_distance = qAbs(current_offset.convert_to<double>() -
+ mouse_down_offset_.convert_to<double>()) / view_.scale();
+
+ if (drag_distance > QApplication::startDragDistance()) {
+ view_.show_cursors(true);
+ view_.set_cursors(mouse_down_offset_, current_offset);
+ } else
+ view_.show_cursors(false);
+
+ } else {
+ if (!item_dragging_) {
+ if ((event->pos() - mouse_down_point_).manhattanLength() <
+ QApplication::startDragDistance())
+ return;
- // Do the drag
- drag_items(event->pos() - mouse_down_point_);
+ if (!accept_drag())
+ return;
+
+ item_dragging_ = true;
+ }
+
+ // Do the drag
+ drag_items(event->pos() - mouse_down_point_);
+ }
}
}