X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fview.cpp;h=c5465ff3c6ba19eef1cd68ba2082ba40d7f413c4;hp=d2f708e5e103d5642d1af1de46f9a30a3ce68073;hb=4b192962559bb212408a94f48a9a8efead024aa7;hpb=ca4ec3eab886e62c0f9d0cc91636383a74ad5d7b

diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index d2f708e5..c5465ff3 100644
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -30,6 +30,7 @@
 
 #include "header.h"
 #include "ruler.h"
+#include "signal.h"
 #include "view.h"
 #include "viewport.h"
 
@@ -51,10 +52,14 @@ const int View::RulerHeight = 30;
 
 const int View::MaxScrollValue = INT_MAX / 2;
 
-const int View::SignalHeight = 50;
+const int View::SignalHeight = 30;
+const int View::SignalMargin = 10;
+const int View::SignalSnapGridSize = 10;
 
 const QColor View::CursorAreaColour(220, 231, 243);
 
+const QSizeF View::LabelPadding(4, 0);
+
 View::View(SigSession &session, QWidget *parent) :
 	QAbstractScrollArea(parent),
 	_session(session),
@@ -82,6 +87,9 @@ View::View(SigSession &session, QWidget *parent) :
 	connect(&_cursors.second, SIGNAL(time_changed()),
 		this, SLOT(marker_time_changed()));
 
+	connect(_header, SIGNAL(signals_moved()),
+		this, SLOT(on_signals_moved()));
+
 	setViewportMargins(LabelMarginWidth, RulerHeight, 0, 0);
 	setViewport(_viewport);
 
@@ -160,6 +168,22 @@ const QPoint& View::hover_point() const
 	return _hover_point;
 }
 
+void View::normalize_layout()
+{
+	vector< shared_ptr<Signal> > &sigs = _session.get_signals();
+
+	int v_min = INT_MAX;
+	BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+		v_min = min(s->get_v_offset(), v_min);
+
+	const int delta = -min(v_min, 0);
+	BOOST_FOREACH(shared_ptr<Signal> s, sigs)
+		s->set_v_offset(s->get_v_offset() + delta);
+
+	verticalScrollBar()->setSliderPosition(_v_offset + delta);
+	v_scroll_value_changed(verticalScrollBar()->sliderPosition());
+}
+
 void View::get_scroll_layout(double &length, double &offset) const
 {
 	const shared_ptr<SignalData> sig_data = _session.get_data();
@@ -195,7 +219,20 @@ void View::update_scroll()
 	// Set the vertical scrollbar
 	verticalScrollBar()->setPageStep(areaSize.height());
 	verticalScrollBar()->setRange(0,
-		_viewport->get_total_height() - areaSize.height());
+		_viewport->get_total_height() + SignalMargin -
+		areaSize.height());
+}
+
+void View::reset_signal_layout()
+{
+	int offset = SignalMargin;
+	vector< shared_ptr<Signal> > &sigs = _session.get_signals();
+	BOOST_FOREACH(shared_ptr<Signal> s, sigs) {
+		s->set_v_offset(offset);
+		offset += SignalHeight + 2 * SignalMargin;
+	}
+
+	normalize_layout();
 }
 
 bool View::eventFilter(QObject *object, QEvent *event)
@@ -289,6 +326,9 @@ void View::data_updated()
 
 	// Repaint the view
 	_viewport->update();
+
+	/// @todo: Call this only once when the signals are first created.
+	reset_signal_layout();
 }
 
 void View::marker_time_changed()
@@ -297,5 +337,11 @@ void View::marker_time_changed()
 	_viewport->update();
 }
 
+void View::on_signals_moved()
+{
+	update_scroll();
+	signals_moved();
+}
+
 } // namespace view
 } // namespace pv