X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fanalogsignal.cpp;h=cb4c0325e3e83fd42fbd7335d09cf77faee4bef0;hb=341d9a7975be53bb44af8d2deeba9b4a5e086929;hp=07fc7cf72add70fda687d3bc9b304bcfdf1d72fc;hpb=03d2a4f8cacda8ad1d79b4e6a312ebe30b835a55;p=pulseview.git

diff --git a/pv/views/trace/analogsignal.cpp b/pv/views/trace/analogsignal.cpp
index 07fc7cf..cb4c032 100644
--- 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;
@@ -266,14 +268,10 @@ void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 	if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 		paint_grid(p, y, pp.left(), pp.right());
 
-		const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
-			base_->analog_data()->analog_segments();
-		if (segments.empty())
+		shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
+		if (!segment)
 			return;
 
-		const shared_ptr<pv::data::AnalogSegment> &segment =
-			segments.front();
-
 		const double pixels_offset = pp.pixels_offset();
 		const double samplerate = max(1.0, segment->samplerate());
 		const pv::util::Timestamp& start_time = segment->start_time();
@@ -532,15 +530,10 @@ void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
 	const float high_offset = y - ph + signal_margin + 0.5f;
 	const float low_offset = y + nh - signal_margin - 0.5f;
 
-	const deque< shared_ptr<pv::data::LogicSegment> > &segments =
-		base_->logic_data()->logic_segments();
-
-	if (segments.empty())
+	shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
+	if (!segment)
 		return;
 
-	const shared_ptr<pv::data::LogicSegment> &segment =
-		segments.front();
-
 	double samplerate = segment->samplerate();
 
 	// Show sample rate as 1Hz when it is unknown
@@ -654,6 +647,52 @@ void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
 	p.drawLines(lines, line - lines);
 }
 
+shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
+{
+	shared_ptr<pv::data::AnalogSegment> segment;
+
+	const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
+		base_->analog_data()->analog_segments();
+
+	if (!segments.empty()) {
+		if (segment_display_mode_ == ShowLastSegmentOnly)
+			segment = segments.back();
+
+		if (segment_display_mode_ == ShowSingleSegmentOnly) {
+			try {
+				segment = segments.at(current_segment_);
+			} catch (out_of_range) {
+				qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
+			}
+		}
+	}
+
+	return segment;
+}
+
+shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
+{
+	shared_ptr<pv::data::LogicSegment> segment;
+
+	const deque< shared_ptr<pv::data::LogicSegment> > &segments =
+		base_->logic_data()->logic_segments();
+
+	if (!segments.empty()) {
+		if (segment_display_mode_ == ShowLastSegmentOnly)
+			segment = segments.back();
+
+		if (segment_display_mode_ == ShowSingleSegmentOnly) {
+			try {
+				segment = segments.at(current_segment_);
+			} catch (out_of_range) {
+				qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
+			}
+		}
+	}
+
+	return segment;
+}
+
 float AnalogSignal::get_resolution(int scale_index)
 {
 	const float seq[] = {1.0f, 2.0f, 5.0f};