Header: Only allow dragging if all traces share a common ancestor

[pulseview.git] / pv / view / logicsignal.cpp

diff --git a/pv/view/logicsignal.cpp b/pv/view/logicsignal.cpp
index 21bd5b95ec630a4b484c367ff8d9fd66ed3384ef..69c495e609fafd84b8113e274b3d270305240ff8 100644 (file)
--- a/pv/view/logicsignal.cpp
+++ b/pv/view/logicsignal.cpp
@@ -137,14 +137,17 @@ void LogicSignal::paint_mid(QPainter &p, int left, int right)
        assert(_channel);
        assert(_data);
        assert(right >= left);
+       assert(_owner);
 
-       assert(_view);
-       const int y = _v_offset - _view->v_offset();
+       const int y = get_y();
 
-       const double scale = _view->scale();
+       const View *const view = _owner->view();
+       assert(view);
+       
+       const double scale = view->scale();
        assert(scale > 0);
 
-       const double offset = _view->offset();
+       const double offset = view->offset();
 
        if (!_channel->enabled())
                return;