Implement showing only the selected segment

[pulseview.git] / pv / views / trace / logicsignal.cpp

diff --git a/pv/views/trace/logicsignal.cpp b/pv/views/trace/logicsignal.cpp
index 407551843bfdcaeaa633345108b69647c22fbc37..e536171667307c8e43a2a81876de90c3ca9f815c 100644 (file)
--- a/pv/views/trace/logicsignal.cpp
+++ b/pv/views/trace/logicsignal.cpp
@@ -46,6 +46,7 @@ using std::max;
 using std::make_pair;
 using std::min;
 using std::none_of;
+using std::out_of_range;
 using std::pair;
 using std::shared_ptr;
 using std::vector;
@@ -196,7 +197,13 @@ void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
        if (segments.empty())
                return;
 
-       const shared_ptr<pv::data::LogicSegment> &segment = segments.front();
+       shared_ptr<pv::data::LogicSegment> segment;
+       try {
+               segment = segments.at(current_segment_);
+       } catch (out_of_range) {
+               qDebug() << "Current logic segment out of range for signal" << base_->name();
+               return;
+       }
 
        double samplerate = segment->samplerate();