GraphViewer: added setNodeInfo() function

guilib/src/GraphViewer.cpp

@@ -109,6 +109,10 @@ public:
 		_value = value;
 	}
 
+	void setToolTipInfo(const QString & info) {
+		_info = info;
+	}
+
 	void setRadius(float radius)
 	{
 		float r,p,yaw;
@@ -160,6 +164,10 @@ protected:
 		{
 			msg += QString("\n%1=%2").arg(_valueName).arg(_value);
 		}
+		if(!_info.isEmpty())
+		{
+			msg += QString("\n%1").arg(_info);
+		}
 
 		this->setToolTip(msg);
 		
@@ -181,6 +189,7 @@ private:
 	QGraphicsLineItem * _line;
 	QString _valueName;
 	float _value;
+	QString _info;
 };
 
 class NodeGPSItem: public NodeItem
@@ -522,6 +531,7 @@ void GraphViewer::updateGraph(const std::map<int, Transform> & poses,
 		}
 		iter.value()->hide();
 		iter.value()->setColor(color); // reset color
+		iter.value()->setToolTipInfo(QString());
 		iter.value()->setZValue(iter.key()<0?21:20);
 	}
 	for(QMultiMap<int, LinkItem*>::iterator iter = _linkItems.begin(); iter!=_linkItems.end(); ++iter)
@@ -1166,6 +1176,19 @@ void GraphViewer::setCurrentGoalID(int id, const Transform & pose)
 	}
 }
 
+void GraphViewer::setNodeInfo(int id, const QString & info)
+{
+	NodeItem * node = _nodeItems.value(id, 0);
+	if(node)
+	{
+		node->setToolTipInfo(info);
+	}
+	else
+	{
+		UWARN("Current goal %d not found in the graph", id);
+	}
+}
+
 void GraphViewer::setLocalRadius(float radius)
 {
 	_localRadius->setRect(-radius*100, -radius*100, radius*200, radius*200);