diff --git a/example/stackedbarchart/main.cpp b/example/stackedbarchart/main.cpp
index c593b92..cf6294c 100644
--- a/example/stackedbarchart/main.cpp
+++ b/example/stackedbarchart/main.cpp
@@ -26,15 +26,15 @@ int main(int argc, char *argv[])
 
     // Create some test data to chart
     *set0 << 1 << 2 << 3 << 4 << 5 << 6 << 7 << 8 << 9 << 10 << 11 << 12;
-    *set1 << 5 << 0 << 0 << 4 << 0 << 7 << 8 << 9 << 9 << 0 << 4 << 2;
-    *set2 << 3 << 5 << 8 << 13 << 8 << 5 << 3 << 2 << 1 << 1 << 3 << 5;
-    *set3 << 5 << 6 << 7 << 3 << 4 << 5 << 8 << 9 << 10 << 5 << 2 << 7;
+//    *set1 << 5 << 0 << 0 << 4 << 0 << 7 << 8 << 9 << 9 << 0 << 4 << 2;
+//    *set2 << 3 << 5 << 8 << 13 << 8 << 5 << 3 << 2 << 1 << 1 << 3 << 5;
+//    *set3 << 5 << 6 << 7 << 3 << 4 << 5 << 8 << 9 << 10 << 5 << 2 << 7;
     *set4 << 9 << 7 << 5 << 3 << 1 << 2 << 4 << 6 << 8 << 10 << 1 << 6;
 
     series0->addBarSet(set0);
-    series0->addBarSet(set1);
-    series0->addBarSet(set2);
-    series0->addBarSet(set3);
+//    series0->addBarSet(set1);
+//    series0->addBarSet(set2);
+//    series0->addBarSet(set3);
     series0->addBarSet(set4);
 
     ChartWidget* chartWidget =  new ChartWidget(&window);
diff --git a/src/barchart/bar.cpp b/src/barchart/bar.cpp
index 615314b..941c5be 100644
--- a/src/barchart/bar.cpp
+++ b/src/barchart/bar.cpp
@@ -63,7 +63,7 @@ void Bar::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidg
 
 QRectF Bar::boundingRect() const
 {
-    QRectF r(mXpos, mYpos, mXpos + mWidth, mYpos + mHeight);
+    QRectF r(mXpos, mYpos, mWidth, mHeight);
     return r;
 }
 
diff --git a/src/barchart/barchartmodel.cpp b/src/barchart/barchartmodel.cpp
index 55826af..463dc47 100644
--- a/src/barchart/barchartmodel.cpp
+++ b/src/barchart/barchartmodel.cpp
@@ -51,10 +51,9 @@ QBarSet* BarChartModel::nextSet(bool getFirst)
     return set;
 }
 
-
-QBarSet& BarChartModel::setAt(int index)
+QBarSet* BarChartModel::setAt(int index)
 {
-    return *mDataModel.at(index);
+    return mDataModel.at(index);
 }
 
 int BarChartModel::countSets()
diff --git a/src/barchart/barchartmodel_p.h b/src/barchart/barchartmodel_p.h
index 26f3009..40b821d 100644
--- a/src/barchart/barchartmodel_p.h
+++ b/src/barchart/barchartmodel_p.h
@@ -23,8 +23,7 @@ public:
     void addBarSet(QBarSet *set);
     void removeBarSet(QBarSet *set);
     QBarSet* nextSet(bool getFirst);
-
-    QBarSet& setAt(int index);  // Internal
+    QBarSet *setAt(int index);
 
     int countSets();            // Number of sets in model
     int countCategories();      // Number of categories
diff --git a/src/barchart/barlabel.cpp b/src/barchart/barlabel.cpp
index 3437334..6f8c635 100644
--- a/src/barchart/barlabel.cpp
+++ b/src/barchart/barlabel.cpp
@@ -29,7 +29,7 @@ void BarLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, 
 
 QRectF BarLabel::boundingRect() const
 {
-    QRectF r(mXpos, mYpos, mXpos + mSize.width(), mYpos + mSize.height());
+    QRectF r(mXpos, mYpos, mSize.width(), mSize.height());
     return r;
 }
 
diff --git a/src/barchart/barpresenter.cpp b/src/barchart/barpresenter.cpp
index 3323d2a..592f997 100644
--- a/src/barchart/barpresenter.cpp
+++ b/src/barchart/barpresenter.cpp
@@ -52,7 +52,7 @@ void BarPresenter::layoutChanged()
 
             // TODO: width settable per bar?
             bar->resize(mBarDefaultWidth, barHeight);
-            bar->setBrush(mModel.setAt(set).brush());
+            bar->setBrush(mModel.setAt(set)->brush());
             bar->setPos(xPos, yPos-barHeight); // item*posStep+startPos + set * mBarDefaultWidth, mHeight);
             itemIndex++;
             xPos += mBarDefaultWidth;
diff --git a/src/barchart/barpresenterbase.cpp b/src/barchart/barpresenterbase.cpp
index 4eba484..75d5782 100644
--- a/src/barchart/barpresenterbase.cpp
+++ b/src/barchart/barpresenterbase.cpp
@@ -63,13 +63,13 @@ void BarPresenterBase::dataChanged()
     mFloatingValues.clear();
 
     // Create new graphic items for bars
-    for (int s=0; s<mModel.countSets(); s++) {
-        QBarSet *set = mModel.nextSet(0==s);
-        for (int c=0; c<mModel.countCategories(); c++) {
+    for (int c=0; c<mModel.countCategories(); c++) {
+        for (int s=0; s<mModel.countSets(); s++) {
+            QBarSet *set = mModel.setAt(s);
             Bar *bar = new Bar(this);
             childItems().append(bar);
             mBars.append(bar);
-            connect(bar,SIGNAL(clicked()),set,SLOT(toggleFloatingValuesVisible()));
+            connect(bar,SIGNAL(clicked()),set,SLOT(barClicked()));
         }
     }
 
@@ -92,31 +92,20 @@ void BarPresenterBase::dataChanged()
     }
 
     // Create floating values
-    for (int s=0; s<mModel.countSets(); s++) {
-        QBarSet *set = mModel.nextSet(0==s);
-        for (int category=0; category<mModel.countCategories(); category++) {
+    for (int category=0; category<mModel.countCategories(); category++) {
+        for (int s=0; s<mModel.countSets(); s++) {
+            QBarSet *set = mModel.setAt(s);
             BarValue *value = new BarValue(*set, this);
             childItems().append(value);
             mFloatingValues.append(value);
+            connect(set,SIGNAL(clicked()),value,SLOT(toggleVisible()));
         }
-        connect(set,SIGNAL(setFloatingValuesVisible(QBarSet*)),this,SLOT(setFloatingValues(QBarSet*)));
     }
 
     // TODO: if (autolayout) { layoutChanged() } or something
     mLayoutDirty = true;
 }
 
-void BarPresenterBase::setFloatingValues(QBarSet *set)
-{
-    qDebug() << "BarPresenterBase::setFloatingValues";
-    // TODO: better way to map set to BarValues?
-    for (int i=0; i<mFloatingValues.count(); i++) {
-        if (mFloatingValues.at(i)->belongsToSet(set)) {
-            mFloatingValues.at(i)->setVisible(set->isFloatingValuesVisible());
-        }
-    }
-}
-
 //handlers
 
 void BarPresenterBase::handleModelChanged(int index)
diff --git a/src/barchart/barpresenterbase.h b/src/barchart/barpresenterbase.h
index ecbe5fa..01c9ace 100644
--- a/src/barchart/barpresenterbase.h
+++ b/src/barchart/barpresenterbase.h
@@ -41,9 +41,6 @@ public:
     virtual void dataChanged();     // data of series has changed -> need to recalculate bar sizes
     virtual void layoutChanged() = 0;   // layout has changed -> need to recalculate bar sizes
 
-public Q_SLOTS:
-    void setFloatingValues(QBarSet *set);
-
 protected slots:
     void handleModelChanged(int index);
     void handleDomainChanged(const Domain& domain);
diff --git a/src/barchart/barvalue.cpp b/src/barchart/barvalue.cpp
index cfa2063..3673227 100644
--- a/src/barchart/barvalue.cpp
+++ b/src/barchart/barvalue.cpp
@@ -5,10 +5,10 @@
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 BarValue::BarValue(QBarSet &set, QGraphicsItem *parent)
-    : QGraphicsItem(parent)
+    : QGraphicsObject(parent)
     ,mBarSet(set)
 {
-//    setVisible(false);
+    setVisible(false);
 }
 
 void BarValue::setValueString(QString str)
@@ -56,9 +56,14 @@ void BarValue::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, 
 
 QRectF BarValue::boundingRect() const
 {
-    QRectF r(mXpos, mYpos, mXpos + mWidth, mYpos + mHeight);
+    QRectF r(mXpos, mYpos, mWidth, mHeight);
     return r;
 }
 
+void BarValue::toggleVisible()
+{
+    setVisible(!isVisible());
+}
 
+#include "moc_barvalue_p.cpp"
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/barvalue_p.h b/src/barchart/barvalue_p.h
index eaba88b..e705c14 100644
--- a/src/barchart/barvalue_p.h
+++ b/src/barchart/barvalue_p.h
@@ -2,7 +2,7 @@
 #define BARVALUE_P_H
 
 #include "qchartglobal.h"
-#include <QGraphicsItem>
+#include <QGraphicsObject>
 #include <QPen>
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -12,8 +12,9 @@ class QBarSet;
 // Visual class for floating bar values
 // TODO: fonts, colors etc.
 // By default these are not visible.
-class BarValue : public QGraphicsItem // TODO: public QGraphicsObject for signals?
+class BarValue : public QGraphicsObject
 {
+    Q_OBJECT
 public:
     BarValue(QBarSet &set, QGraphicsItem *parent = 0);
 
@@ -32,6 +33,9 @@ public:
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     QRectF boundingRect() const;
 
+public Q_SLOTS:
+    void toggleVisible();
+
 private:
 
     QBarSet& mBarSet;
diff --git a/src/barchart/percentbarpresenter.cpp b/src/barchart/percentbarpresenter.cpp
index dd90d73..7169a17 100644
--- a/src/barchart/percentbarpresenter.cpp
+++ b/src/barchart/percentbarpresenter.cpp
@@ -50,7 +50,7 @@ void PercentBarPresenter::layoutChanged()
 
             // TODO: width settable per bar?
             bar->resize(mBarDefaultWidth, barHeight);
-            bar->setBrush(mModel.setAt(set).brush());
+            bar->setBrush(mModel.setAt(set)->brush());
             bar->setPos(xPos, yPos-barHeight);
             itemIndex++;
             yPos -= barHeight;
diff --git a/src/barchart/qbarset.cpp b/src/barchart/qbarset.cpp
index fc0107a..1548c2d 100644
--- a/src/barchart/qbarset.cpp
+++ b/src/barchart/qbarset.cpp
@@ -65,24 +65,11 @@ bool QBarSet::isFloatingValuesVisible()
 
 void QBarSet::barClicked()
 {
-    qDebug() << "QBarset::barClicked";
+    qDebug() << "QBarset::barClicked" << this;
     // Some bar of this set has been clicked
     // TODO: What happens then?
     emit clicked();     // Notify that set has been clicked
 }
 
-void QBarSet::toggleFloatingValuesVisible()
-{
-    qDebug() << "QBarset::toggleFloatingValuesVisible";
-    // TODO: toggle vs explicit set?
-    if (mFloatingValuesVisible) {
-        mFloatingValuesVisible=false;
-    } else {
-        mFloatingValuesVisible=true;
-    }
-    emit setFloatingValuesVisible(this);
-}
-
-
 #include "moc_qbarset.cpp"
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/qbarset.h b/src/barchart/qbarset.h
index 9a7e82a..889881a 100644
--- a/src/barchart/qbarset.h
+++ b/src/barchart/qbarset.h
@@ -31,7 +31,6 @@ public:
 
 Q_SIGNALS:
     void clicked();
-    void setFloatingValuesVisible(QBarSet* set);
 /*
     void hoverEnter();
     void hoverLeave();
@@ -39,7 +38,6 @@ Q_SIGNALS:
 
 public Q_SLOTS:
     void barClicked();
-    void toggleFloatingValuesVisible();
 
 private:
 
diff --git a/src/barchart/stackedbarpresenter.cpp b/src/barchart/stackedbarpresenter.cpp
index 67c0c7b..e5dafa0 100644
--- a/src/barchart/stackedbarpresenter.cpp
+++ b/src/barchart/stackedbarpresenter.cpp
@@ -55,7 +55,7 @@ void StackedBarPresenter::layoutChanged()
             Bar* bar = mBars.at(itemIndex);
 
             bar->resize(mBarDefaultWidth, barHeight);
-            bar->setBrush(mModel.setAt(set).brush());
+            bar->setBrush(mModel.setAt(set)->brush());
             bar->setPos(xPos, yPos-barHeight);
             itemIndex++;
             yPos -= barHeight;