Implement showing only the selected segment

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

diff --git a/pv/views/trace/analogsignal.cpp b/pv/views/trace/analogsignal.cpp
index 07fc7cf72add70fda687d3bc9b304bcfdf1d72fc..cddf59c15059cdda26a209b4781032f73fdd9bce 100644 (file)
--- a/pv/views/trace/analogsignal.cpp
+++ b/pv/views/trace/analogsignal.cpp
@@ -28,6 +28,7 @@
 #include <QApplication>
 #include <QCheckBox>
 #include <QComboBox>
+#include <QDebug>
 #include <QFormLayout>
 #include <QGridLayout>
 #include <QLabel>
@@ -54,6 +55,7 @@ using std::max;
 using std::make_pair;
 using std::min;
 using std::numeric_limits;
+using std::out_of_range;
 using std::pair;
 using std::placeholders::_1;
 using std::shared_ptr;
@@ -271,8 +273,13 @@ void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
                if (segments.empty())
                        return;
 
-               const shared_ptr<pv::data::AnalogSegment> &segment =
-                       segments.front();
+               shared_ptr<pv::data::AnalogSegment> segment;
+               try {
+                       segment = segments.at(current_segment_);
+               } catch (out_of_range) {
+                       qDebug() << "Current analog segment out of range for signal" << base_->name();
+                       return;
+               }
 
                const double pixels_offset = pp.pixels_offset();
                const double samplerate = max(1.0, segment->samplerate());
@@ -538,8 +545,13 @@ void AnalogSignal::paint_logic_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();