X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fanalogsignal.cpp;h=43d1175d3bb466c346dbbf1f1a65657fbd8bf203;hb=4bd0ecb8d08b655a4e2a1d60b3166e97b290475c;hp=11a73068b25c13bb7724971a57aad8775796e38b;hpb=20df1a39d587c284f5ee8873dc05470d6a6b11eb;p=pulseview.git

diff --git a/pv/views/trace/analogsignal.cpp b/pv/views/trace/analogsignal.cpp
index 11a7306..43d1175 100644
--- a/pv/views/trace/analogsignal.cpp
+++ b/pv/views/trace/analogsignal.cpp
@@ -47,7 +47,6 @@
 
 #include <libsigrokcxx/libsigrokcxx.hpp>
 
-using std::bind;
 using std::deque;
 using std::div;
 using std::div_t;
@@ -57,7 +56,6 @@ using std::min;
 using std::numeric_limits;
 using std::out_of_range;
 using std::pair;
-using std::placeholders::_1;
 using std::shared_ptr;
 using std::vector;
 
@@ -279,7 +277,7 @@ void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 		paint_grid(p, y, pp.left(), pp.right());
 
 		shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
-		if (!segment)
+		if (!segment || (segment->get_sample_count() == 0))
 			return;
 
 		const double pixels_offset = pp.pixels_offset();
@@ -449,8 +447,7 @@ void AnalogSignal::paint_trace(QPainter &p,
 				}
 			}
 
-			sampling_points[idx].push_back(
-				QRectF(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w));
+			sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
 		}
 	}
 	delete[] sample_block;
@@ -541,7 +538,7 @@ void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
 	const float low_offset = y + nh - signal_margin - 0.5f;
 
 	shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
-	if (!segment)
+	if (!segment || (segment->get_sample_count() == 0))
 		return;
 
 	double samplerate = segment->samplerate();
@@ -672,7 +669,7 @@ shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint()
 				(segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 			try {
 				segment = segments.at(current_segment_);
-			} catch (out_of_range) {
+			} catch (out_of_range&) {
 				qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
 			}
 		}
@@ -696,7 +693,7 @@ shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() co
 				(segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 			try {
 				segment = segments.at(current_segment_);
-			} catch (out_of_range) {
+			} catch (out_of_range&) {
 				qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
 			}
 		}