From 9cef95672622f4ecdb21edef9d81a10c789daf1e Mon Sep 17 00:00:00 2001
From: Joel Holdsworth <joel@airwebreathe.org.uk>
Date: Sat, 7 Sep 2013 14:50:22 +0100
Subject: [PATCH] Update the viewport as new data is decoded

---
 pv/data/decoder.cpp      | 2 ++
 pv/data/decoder.h        | 3 +++
 pv/view/decodesignal.cpp | 9 +++++++++
 pv/view/decodesignal.h   | 3 +++
 pv/view/view.cpp         | 6 ++++++
 pv/view/view.h           | 2 ++
 6 files changed, 25 insertions(+)

diff --git a/pv/data/decoder.cpp b/pv/data/decoder.cpp
index 787d1600..00b9e0b7 100644
--- a/pv/data/decoder.cpp
+++ b/pv/data/decoder.cpp
@@ -189,6 +189,8 @@ void Decoder::annotation_callback(srd_proto_data *pdata, void *decoder)
 	shared_ptr<Annotation> a(new Annotation(pdata));
 	lock_guard<mutex> lock(d->_annotations_mutex);
 	d->_annotations.push_back(a);
+
+	d->new_decode_data();
 }
 
 } // namespace data
diff --git a/pv/data/decoder.h b/pv/data/decoder.h
index 8a0f00a4..c881403b 100644
--- a/pv/data/decoder.h
+++ b/pv/data/decoder.h
@@ -83,6 +83,9 @@ private:
 	static void annotation_callback(srd_proto_data *pdata,
 		void *decoder);
 
+signals:
+	void new_decode_data();
+
 private:
 	const srd_decoder *const _decoder;
 	std::map<const srd_probe*, boost::shared_ptr<view::Signal> >
diff --git a/pv/view/decodesignal.cpp b/pv/view/decodesignal.cpp
index 514fbca3..89d2c321 100644
--- a/pv/view/decodesignal.cpp
+++ b/pv/view/decodesignal.cpp
@@ -52,6 +52,9 @@ DecodeSignal::DecodeSignal(pv::SigSession &session,
 	assert(_decoder);
 
 	_colour = DecodeColours[index % countof(DecodeColours)];
+
+	connect(_decoder.get(), SIGNAL(new_decode_data()),
+		this, SLOT(on_new_decode_data()));
 }
 
 void DecodeSignal::init_context_bar_actions(QWidget *parent)
@@ -111,5 +114,11 @@ const list<QAction*> DecodeSignal::get_context_bar_actions()
 	return actions;
 }
 
+void DecodeSignal::on_new_decode_data()
+{
+	if (_view)
+		_view->update_viewport();
+}
+
 } // namespace view
 } // namespace pv
diff --git a/pv/view/decodesignal.h b/pv/view/decodesignal.h
index a9ff265e..673d6549 100644
--- a/pv/view/decodesignal.h
+++ b/pv/view/decodesignal.h
@@ -76,6 +76,9 @@ private:
 	 **/
 	int get_nominal_offset(const QRect &rect) const;
 
+private slots:
+	void on_new_decode_data();
+
 private:
 	boost::shared_ptr<pv::data::Decoder> _decoder;
 
diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index 54ab4ff9..508b91c5 100644
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -252,6 +252,12 @@ void View::normalize_layout()
 	v_scroll_value_changed(verticalScrollBar()->sliderPosition());
 }
 
+void View::update_viewport()
+{
+	assert(_viewport);
+	_viewport->update();
+}
+
 void View::get_scroll_layout(double &length, double &offset) const
 {
 	const shared_ptr<data::SignalData> sig_data = _session.get_data();
diff --git a/pv/view/view.h b/pv/view/view.h
index 25e43b8a..c25ed78a 100644
--- a/pv/view/view.h
+++ b/pv/view/view.h
@@ -126,6 +126,8 @@ public:
 
 	void normalize_layout();
 
+	void update_viewport();
+
 signals:
 	void hover_point_changed();
 
-- 
2.30.2