X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fheader.cpp;h=a7902521216a90655ba708669ab5b36b2886f52b;hp=dec5c20cbabfad042ec785886a2a2be9ca747e40;hb=8bd26d8b9c831b509ee3241ea4dac6f50c023622;hpb=5ed1adf555e0f0fb36d5b4b36f2be17745b5c8ae

diff --git a/pv/view/header.cpp b/pv/view/header.cpp
index dec5c20c..a7902521 100644
--- a/pv/view/header.cpp
+++ b/pv/view/header.cpp
@@ -36,12 +36,17 @@
 
 #include <pv/widgets/popup.h>
 
-using namespace boost;
-using namespace std;
+using boost::shared_ptr;
+using std::max;
+using std::make_pair;
+using std::pair;
+using std::vector;
 
 namespace pv {
 namespace view {
 
+const int Header::Padding = 12;
+
 Header::Header(View &parent) :
 	MarginWidget(parent),
 	_dragging(false)
@@ -54,6 +59,23 @@ Header::Header(View &parent) :
 
 	connect(&_view, SIGNAL(signals_moved()),
 		this, SLOT(on_signals_moved()));
+
+	// Trigger the initial event manually. The default device has signals
+	// which were created before this object came into being
+	on_signals_changed();
+}
+
+QSize Header::sizeHint() const
+{
+	int max_width = 0;
+
+	const vector< shared_ptr<Trace> > traces(_view.get_traces());
+	BOOST_FOREACH(shared_ptr<Trace> t, traces) {
+		assert(t);
+		max_width = max(max_width, (int)t->get_label_rect(0).width());
+	}
+
+	return QSize(max_width + Padding, 0);
 }
 
 shared_ptr<Trace> Header::get_mouse_over_trace(const QPoint &pt)
@@ -261,7 +283,7 @@ void Header::on_signals_changed()
 		connect(t.get(), SIGNAL(visibility_changed()),
 			this, SLOT(update()));
 		connect(t.get(), SIGNAL(text_changed()),
-			this, SLOT(update()));
+			this, SLOT(on_trace_text_changed()));
 		connect(t.get(), SIGNAL(colour_changed()),
 			this, SLOT(update()));
 	}
@@ -272,6 +294,11 @@ void Header::on_signals_moved()
 	update();
 }
 
+void Header::on_trace_text_changed()
+{
+	update();
+	geometry_updated();
+}
 
 } // namespace view
 } // namespace pv