X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Flogicsignal.cpp;h=6a9bf432a07157c2a2e7713e60dbd7972c8abd8f;hp=8396323f4ee05623c3e49d747ef9b44caf47cc15;hb=eeceee9955e7db4ac777d49d1b7a766069476b08;hpb=cc844e861276b56837c345d69975c50f009d57af

diff --git a/pv/views/trace/logicsignal.cpp b/pv/views/trace/logicsignal.cpp
index 8396323..6a9bf43 100644
--- a/pv/views/trace/logicsignal.cpp
+++ b/pv/views/trace/logicsignal.cpp
@@ -57,6 +57,8 @@ using sigrok::Trigger;
 using sigrok::TriggerMatch;
 using sigrok::TriggerMatchType;
 
+using pv::data::LogicSegment;
+
 namespace pv {
 namespace views {
 namespace trace {
@@ -181,7 +183,7 @@ void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 	const float high_offset = y - signal_height_ + 0.5f;
 	const float low_offset = y + 0.5f;
 
-	shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
+	shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 	if (!segment || (segment->get_sample_count() == 0))
 		return;
 
@@ -320,6 +322,33 @@ void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 	}
 }
 
+vector<LogicSegment::EdgePair> LogicSignal::get_nearest_level_changes(uint64_t sample_pos)
+{
+	assert(base_);
+	assert(owner_);
+
+	if (sample_pos == 0)
+		return vector<LogicSegment::EdgePair>();
+
+	shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
+	if (!segment || (segment->get_sample_count() == 0))
+		return vector<LogicSegment::EdgePair>();
+
+	const View *view = owner_->view();
+	assert(view);
+	const double samples_per_pixel = base_->get_samplerate() * view->scale();
+
+	vector<LogicSegment::EdgePair> edges;
+
+	segment->get_surrounding_edges(edges, sample_pos,
+		samples_per_pixel / Oversampling, base_->index());
+
+	if (edges.empty())
+		return vector<LogicSegment::EdgePair>();
+
+	return edges;
+}
+
 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 	vector< pair<int64_t, bool> > &edges, bool level,
 	double samples_per_pixel, double pixels_offset, float x_offset,