Notifys added to properties

Task-number: QTRD-2671

Change-Id: If95696b01eab836c2b4d5c6a3c19d7da9b255ab3
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

23 files changed, 244 insertions, 94 deletions

diff --git a/src/datavisualization/axis/q3dabstractaxis.cpp b/src/datavisualization/axis/q3dabstractaxis.cpp
index 82d6e775..0b284947 100644
--- a/src/datavisualization/axis/q3dabstractaxis.cpp
+++ b/src/datavisualization/axis/q3dabstractaxis.cpp
@@ -51,6 +51,7 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 /*!
  * \qmlproperty list AbstractAxis3D::labels
  * Defines the labels for the axis.
+ * \note Setting this property for ValueAxis3D does nothing, as it generates labels automatically.
  */
 
 /*!
@@ -124,27 +125,6 @@ Q3DAbstractAxis::~Q3DAbstractAxis()
 }
 
 /*!
- * \property Q3DAbstractAxis::title
- *
- * Defines the title for the axis.
- */
-QString Q3DAbstractAxis::title() const
-{
-    return d_ptr->m_title;
-}
-
-/*!
- * \property Q3DAbstractAxis::labels
- *
- * Defines the labels for the axis.
- */
-QStringList Q3DAbstractAxis::labels() const
-{
-    d_ptr->updateLabels();
-    return d_ptr->m_labels;
-}
-
-/*!
  * \property Q3DAbstractAxis::orientation
  *
  * Defines the orientation of the axis, one of \c Q3DAbstractAxis::AxisOrientation.
@@ -164,6 +144,11 @@ Q3DAbstractAxis::AxisType Q3DAbstractAxis::type() const
     return d_ptr->m_type;
 }
 
+/*!
+ * \property Q3DAbstractAxis::title
+ *
+ * Defines the title for the axis.
+ */
 void Q3DAbstractAxis::setTitle(QString title)
 {
     if (d_ptr->m_title != title) {
@@ -172,6 +157,28 @@ void Q3DAbstractAxis::setTitle(QString title)
     }
 }
 
+QString Q3DAbstractAxis::title() const
+{
+    return d_ptr->m_title;
+}
+
+/*!
+ * \property Q3DAbstractAxis::labels
+ *
+ * Defines the labels for the axis.
+ * \note Setting this property for Q3DValueAxis does nothing, as it generates labels automatically.
+ */
+void Q3DAbstractAxis::setLabels(const QStringList &labels)
+{
+    Q_UNUSED(labels)
+}
+
+QStringList Q3DAbstractAxis::labels() const
+{
+    d_ptr->updateLabels();
+    return d_ptr->m_labels;
+}
+
 /*!
  * Sets value range of the axis from \a min to \a max.
  * When setting the range, the max is adjusted if necessary, to ensure that the range remains valid.
@@ -241,6 +248,12 @@ bool Q3DAbstractAxis::isAutoAdjustRange() const
     return d_ptr->m_autoAdjust;
 }
 
+/*!
+ * \fn Q3DAbstractAxis::rangeChanged(float min, float max)
+ *
+ * Emits range \a min and \a max values when range changes.
+ */
+
 // Q3DAbstractAxisPrivate
 
 Q3DAbstractAxisPrivate::Q3DAbstractAxisPrivate(Q3DAbstractAxis *q, Q3DAbstractAxis::AxisType type)
@@ -263,10 +276,12 @@ Q3DAbstractAxisPrivate::~Q3DAbstractAxisPrivate()
 
 void Q3DAbstractAxisPrivate::setOrientation(Q3DAbstractAxis::AxisOrientation orientation)
 {
-    if (m_orientation == Q3DAbstractAxis::AxisOrientationNone)
+    if (m_orientation == Q3DAbstractAxis::AxisOrientationNone) {
         m_orientation = orientation;
-    else
+        emit q_ptr->orientationChanged(orientation);
+    } else {
         Q_ASSERT("Attempted to reset axis orientation.");
+    }
 }
 
 void Q3DAbstractAxisPrivate::updateLabels()
@@ -290,10 +305,11 @@ void Q3DAbstractAxisPrivate::setRange(float min, float max)
     // If min >= max, we adjust ranges so that
     // m_max becomes (min + 1.0f)
     // as axes need some kind of valid range.
-    bool dirty = false;
+    bool minDirty = false;
+    bool maxDirty = false;
     if (m_min != min) {
         m_min = min;
-        dirty = true;
+        minDirty = true;
     }
     if (m_max != max || min > max || (!m_allowMinMaxSame && min == max)) {
         if (min > max || (!m_allowMinMaxSame && min == max)) {
@@ -302,10 +318,10 @@ void Q3DAbstractAxisPrivate::setRange(float min, float max)
         } else {
             m_max = max;
         }
-        dirty = true;
+        maxDirty = true;
     }
 
-    if (dirty) {
+    if (minDirty || maxDirty) {
         if (adjusted) {
             qWarning() << "Warning: Tried to set invalid range for axis."
                           " Range automatically adjusted to a valid one:"
@@ -313,6 +329,11 @@ void Q3DAbstractAxisPrivate::setRange(float min, float max)
         }
         emit q_ptr->rangeChanged(m_min, m_max);
     }
+
+    if (minDirty)
+        emit q_ptr->minChanged(m_min);
+    if (maxDirty)
+        emit q_ptr->maxChanged(m_max);
 }
 
 void Q3DAbstractAxisPrivate::setMin(float min)
@@ -326,16 +347,21 @@ void Q3DAbstractAxisPrivate::setMin(float min)
     }
 
     if (m_min != min) {
+        bool maxChanged = false;
         if (min > m_max || (!m_allowMinMaxSame && min == m_max)) {
             float oldMax = m_max;
             m_max = min + 1.0f;
             qWarning() << "Warning: Tried to set minimum to equal or larger than maximum for"
                           " value axis. Maximum automatically adjusted to a valid one:"
                        << oldMax <<  "-->" << m_max;
+            maxChanged = true;
         }
         m_min = min;
 
         emit q_ptr->rangeChanged(m_min, m_max);
+        emit q_ptr->minChanged(m_min);
+        if (maxChanged)
+            emit q_ptr->maxChanged(m_max);
     }
 }
 
@@ -350,6 +376,7 @@ void Q3DAbstractAxisPrivate::setMax(float max)
     }
 
     if (m_max != max) {
+        bool minChanged = false;
         if (m_min > max || (!m_allowMinMaxSame && m_min == max)) {
             float oldMin = m_min;
             m_min = max - 1.0f;
@@ -364,9 +391,13 @@ void Q3DAbstractAxisPrivate::setMax(float max)
             qWarning() << "Warning: Tried to set maximum to equal or smaller than minimum for"
                           " value axis. Minimum automatically adjusted to a valid one:"
                        << oldMin <<  "-->" << m_min;
+            minChanged = true;
         }
         m_max = max;
         emit q_ptr->rangeChanged(m_min, m_max);
+        emit q_ptr->maxChanged(m_max);
+        if (minChanged)
+            emit q_ptr->minChanged(m_min);
     }
 }
 
diff --git a/src/datavisualization/axis/q3dabstractaxis.h b/src/datavisualization/axis/q3dabstractaxis.h
index c154c3ea..825290f5 100644
--- a/src/datavisualization/axis/q3dabstractaxis.h
+++ b/src/datavisualization/axis/q3dabstractaxis.h
@@ -35,11 +35,11 @@ class QT_DATAVISUALIZATION_EXPORT Q3DAbstractAxis : public QObject
     Q_ENUMS(AxisOrientation)
     Q_ENUMS(AxisType)
     Q_PROPERTY(QString title READ title WRITE setTitle NOTIFY titleChanged)
-    Q_PROPERTY(QStringList labels READ labels NOTIFY labelsChanged)
-    Q_PROPERTY(AxisOrientation orientation READ orientation)
-    Q_PROPERTY(AxisType type READ type)
-    Q_PROPERTY(float min READ min WRITE setMin NOTIFY rangeChanged)
-    Q_PROPERTY(float max READ max WRITE setMax NOTIFY rangeChanged)
+    Q_PROPERTY(QStringList labels READ labels WRITE setLabels NOTIFY labelsChanged)
+    Q_PROPERTY(AxisOrientation orientation READ orientation NOTIFY orientationChanged)
+    Q_PROPERTY(AxisType type READ type CONSTANT)
+    Q_PROPERTY(float min READ min WRITE setMin NOTIFY minChanged)
+    Q_PROPERTY(float max READ max WRITE setMax NOTIFY maxChanged)
     Q_PROPERTY(bool autoAdjustRange READ isAutoAdjustRange WRITE setAutoAdjustRange NOTIFY autoAdjustRangeChanged)
 
 public:
@@ -63,25 +63,32 @@ protected:
 public:
     virtual ~Q3DAbstractAxis();
 
+    void setTitle(QString title);
     QString title() const;
+
+    void setLabels(const QStringList &labels);
     QStringList labels() const;
 
     AxisOrientation orientation() const;
     AxisType type() const;
 
+    void setMin(float min);
     float min() const;
+
+    void setMax(float max);
     float max() const;
+
+    void setAutoAdjustRange(bool autoAdjust);
     bool isAutoAdjustRange() const;
 
-    void setTitle(QString title);
     void setRange(float min, float max);
-    void setMin(float min);
-    void setMax(float max);
-    void setAutoAdjustRange(bool autoAdjust);
 
 signals:
     void titleChanged(QString newTitle);
     void labelsChanged();
+    void orientationChanged(AxisOrientation orientation);
+    void minChanged(float value);
+    void maxChanged(float value);
     void rangeChanged(float min, float max);
     void autoAdjustRangeChanged(bool autoAdjust);
 
diff --git a/src/datavisualization/axis/q3dcategoryaxis.cpp b/src/datavisualization/axis/q3dcategoryaxis.cpp
index 6d2dec3a..26a75f93 100644
--- a/src/datavisualization/axis/q3dcategoryaxis.cpp
+++ b/src/datavisualization/axis/q3dcategoryaxis.cpp
@@ -49,10 +49,14 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
  */
 
 /*!
- * \qmlproperty list CategoryAxis3D::categoryLabels
+ * \qmlproperty list CategoryAxis3D::labels
+ *
  * Defines labels for axis applied to categories. If there are fewer labels than categories, the
  * remaining ones do not have a label. If category labels are not defined explicitly, labels are
- * generated from the data row and column labels.
+ * generated from the data row (or column) labels.
+ *
+ * \note If the graph has multiple visible series and category labels are not defined explicitly,
+ * changing the rows (or columns) on any of the attached series will regenerate the labels.
  */
 
 /*!
@@ -61,6 +65,7 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 Q3DCategoryAxis::Q3DCategoryAxis(QObject *parent) :
     Q3DAbstractAxis(new Q3DCategoryAxisPrivate(this), parent)
 {
+    connect(this, &Q3DCategoryAxis::labelsChanged, this, &Q3DAbstractAxis::labelsChanged);
 }
 
 /*!
@@ -71,7 +76,7 @@ Q3DCategoryAxis::~Q3DCategoryAxis()
 }
 
 /*!
- * \property Q3DCategoryAxis::categoryLabels
+ * \property Q3DCategoryAxis::labels
  *
  * Defines labels for axis applied to categories. If there are fewer labels than categories, the
  * remaining ones do not have a label. If category labels are not defined explicitly, labels are
@@ -79,17 +84,13 @@ Q3DCategoryAxis::~Q3DCategoryAxis()
  *
  * \note If the graph has multiple visible series and category labels are not defined explicitly,
  * changing the rows (or columns) on any of the attached series will regenerate the labels.
- *
- * \note CategoryLabels actually reads/writes the Q3DAbstractAxis::labels property,
- * which is read only there. Since subclass cannot have property with same name,
- * this partially duplicate property is necessary.
  */
-QStringList Q3DCategoryAxis::categoryLabels() const
+QStringList Q3DCategoryAxis::labels() const
 {
-    return labels();
+    return Q3DAbstractAxis::labels();
 }
 
-void Q3DCategoryAxis::setCategoryLabels(const QStringList &labels)
+void Q3DCategoryAxis::setLabels(const QStringList &labels)
 {
     dptr()->m_labelsExplicitlySet = !labels.isEmpty();
     bool labelsFromData = false;
diff --git a/src/datavisualization/axis/q3dcategoryaxis.h b/src/datavisualization/axis/q3dcategoryaxis.h
index ef545950..7b2b4744 100644
--- a/src/datavisualization/axis/q3dcategoryaxis.h
+++ b/src/datavisualization/axis/q3dcategoryaxis.h
@@ -28,14 +28,17 @@ class Q3DCategoryAxisPrivate;
 class QT_DATAVISUALIZATION_EXPORT Q3DCategoryAxis : public Q3DAbstractAxis
 {
     Q_OBJECT
-    Q_PROPERTY(QStringList categoryLabels READ categoryLabels WRITE setCategoryLabels)
+    Q_PROPERTY(QStringList labels READ labels WRITE setLabels NOTIFY labelsChanged)
 
 public:
     explicit Q3DCategoryAxis(QObject *parent = 0);
     virtual ~Q3DCategoryAxis();
 
-    QStringList categoryLabels() const;
-    void setCategoryLabels(const QStringList &labels);
+    void setLabels(const QStringList &labels);
+    QStringList labels() const;
+
+signals:
+    void labelsChanged();
 
 protected:
     Q3DCategoryAxisPrivate *dptr();
diff --git a/src/datavisualization/data/qabstract3dseries.h b/src/datavisualization/data/qabstract3dseries.h
index 58346bec..f5dfcf09 100644
--- a/src/datavisualization/data/qabstract3dseries.h
+++ b/src/datavisualization/data/qabstract3dseries.h
@@ -32,7 +32,7 @@ class QT_DATAVISUALIZATION_EXPORT QAbstract3DSeries : public QObject
     Q_OBJECT
     Q_ENUMS(SeriesType)
     Q_ENUMS(Mesh)
-    Q_PROPERTY(SeriesType type READ type)
+    Q_PROPERTY(SeriesType type READ type CONSTANT)
     Q_PROPERTY(QString itemLabelFormat READ itemLabelFormat WRITE setItemLabelFormat NOTIFY itemLabelFormatChanged)
     Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibilityChanged)
     Q_PROPERTY(Mesh mesh READ mesh WRITE setMesh NOTIFY meshChanged)
diff --git a/src/datavisualization/data/qabstractdataproxy.h b/src/datavisualization/data/qabstractdataproxy.h
index 2320d254..2a053c60 100644
--- a/src/datavisualization/data/qabstractdataproxy.h
+++ b/src/datavisualization/data/qabstractdataproxy.h
@@ -31,7 +31,7 @@ class QT_DATAVISUALIZATION_EXPORT QAbstractDataProxy : public QObject
 {
     Q_OBJECT
     Q_ENUMS(DataType)
-    Q_PROPERTY(DataType type READ type)
+    Q_PROPERTY(DataType type READ type CONSTANT)
 
 public:
     enum DataType {
diff --git a/src/datavisualization/data/qbardataproxy.cpp b/src/datavisualization/data/qbardataproxy.cpp
index 2529eeac..80768059 100644
--- a/src/datavisualization/data/qbardataproxy.cpp
+++ b/src/datavisualization/data/qbardataproxy.cpp
@@ -129,6 +129,7 @@ QBar3DSeries *QBarDataProxy::series()
 void QBarDataProxy::resetArray()
 {
     resetArray(0, QStringList(), QStringList());
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -142,6 +143,7 @@ void QBarDataProxy::resetArray(QBarDataArray *newArray)
 {
     dptr()->resetArray(newArray, 0, 0);
     emit arrayReset();
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -156,6 +158,7 @@ void QBarDataProxy::resetArray(QBarDataArray *newArray, const QStringList &rowLa
 {
     dptr()->resetArray(newArray, &rowLabels, &columnLabels);
     emit arrayReset();
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -221,6 +224,7 @@ int QBarDataProxy::addRow(QBarDataRow *row)
 {
     int addIndex = dptr()->addRow(row, 0);
     emit rowsAdded(addIndex, 1);
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -233,6 +237,7 @@ int QBarDataProxy::addRow(QBarDataRow *row, const QString &label)
 {
     int addIndex = dptr()->addRow(row, &label);
     emit rowsAdded(addIndex, 1);
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -246,6 +251,7 @@ int QBarDataProxy::addRows(const QBarDataArray &rows)
 {
     int addIndex = dptr()->addRows(rows, 0);
     emit rowsAdded(addIndex, rows.size());
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -258,6 +264,7 @@ int QBarDataProxy::addRows(const QBarDataArray &rows, const QStringList &labels)
 {
     int addIndex = dptr()->addRows(rows, &labels);
     emit rowsAdded(addIndex, rows.size());
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -272,6 +279,7 @@ void QBarDataProxy::insertRow(int rowIndex, QBarDataRow *row)
 {
     dptr()->insertRow(rowIndex, row, 0);
     emit rowsInserted(rowIndex, 1);
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -282,6 +290,7 @@ void QBarDataProxy::insertRow(int rowIndex, QBarDataRow *row, const QString &lab
 {
     dptr()->insertRow(rowIndex, row, &label);
     emit rowsInserted(rowIndex, 1);
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -295,6 +304,7 @@ void QBarDataProxy::insertRows(int rowIndex, const QBarDataArray &rows)
 {
     dptr()->insertRows(rowIndex, rows, 0);
     emit rowsInserted(rowIndex, rows.size());
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -305,6 +315,7 @@ void QBarDataProxy::insertRows(int rowIndex, const QBarDataArray &rows, const QS
 {
     dptr()->insertRows(rowIndex, rows, &labels);
     emit rowsInserted(rowIndex, rows.size());
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -319,6 +330,7 @@ void QBarDataProxy::removeRows(int rowIndex, int removeCount, bool removeLabels)
     if (rowIndex < rowCount() && removeCount >= 1) {
         dptr()->removeRows(rowIndex, removeCount, removeLabels);
         emit rowsRemoved(rowIndex, removeCount);
+        emit rowCountChanged(rowCount());
     }
 }
 
diff --git a/src/datavisualization/data/qbardataproxy.h b/src/datavisualization/data/qbardataproxy.h
index accd7460..94e15116 100644
--- a/src/datavisualization/data/qbardataproxy.h
+++ b/src/datavisualization/data/qbardataproxy.h
@@ -36,7 +36,7 @@ class QT_DATAVISUALIZATION_EXPORT QBarDataProxy : public QAbstractDataProxy
 {
     Q_OBJECT
 
-    Q_PROPERTY(int rowCount READ rowCount)
+    Q_PROPERTY(int rowCount READ rowCount NOTIFY rowCountChanged)
     Q_PROPERTY(QStringList rowLabels READ rowLabels WRITE setRowLabels NOTIFY rowLabelsChanged)
     Q_PROPERTY(QStringList columnLabels READ columnLabels WRITE setColumnLabels NOTIFY columnLabelsChanged)
     Q_PROPERTY(QBar3DSeries *series READ series NOTIFY seriesChanged)
@@ -88,6 +88,7 @@ signals:
     void rowsInserted(int startIndex, int count);
     void itemChanged(int rowIndex, int columnIndex);
 
+    void rowCountChanged(int count);
     void rowLabelsChanged();
     void columnLabelsChanged();
     void seriesChanged(QBar3DSeries *series);
diff --git a/src/datavisualization/data/qheightmapsurfacedataproxy.cpp b/src/datavisualization/data/qheightmapsurfacedataproxy.cpp
index 88ed2f5d..ce379592 100644
--- a/src/datavisualization/data/qheightmapsurfacedataproxy.cpp
+++ b/src/datavisualization/data/qheightmapsurfacedataproxy.cpp
@@ -59,11 +59,12 @@ const float defaultMaxValue = 10.0f;
  */
 
 /*!
- * \qmlproperty image HeightMapSurfaceDataProxy::heightMap
+ * \qmlproperty string HeightMapSurfaceDataProxy::heightMapFile
  *
- * A height map to be visualized. Setting this property replaces current data with height map data.
+ * A file with a height map image to be visualized. Setting this property replaces current data
+ * with height map data.
  *
- * There are several formats the image can be given in, but if it is not in a directly usable
+ * There are several formats the image file can be given in, but if it is not in a directly usable
  * format, a conversion is made. \note If the result seems wrong, the automatic conversion failed
  * and you should try converting the image yourself before setting it. Preferred format is
  * QImage::Format_RGB32 in grayscale.
@@ -81,15 +82,6 @@ const float defaultMaxValue = 10.0f;
  */
 
 /*!
- * \qmlproperty string HeightMapSurfaceDataProxy::heightMapFile
- *
- * A file with a height map image to be visualized. Setting this property replaces current data
- * with height map data.
- *
- * \sa heightMap
- */
-
-/*!
  * \qmlproperty real HeightMapSurfaceDataProxy::minXValue
  *
  * The minimum X value for the generated surface points.
@@ -202,6 +194,7 @@ void QHeightMapSurfaceDataProxy::setHeightMapFile(const QString &filename)
 {
     dptr()->m_heightMapFile = filename;
     setHeightMap(QImage(filename));
+    emit heightMapFileChanged(filename);
 }
 
 QString QHeightMapSurfaceDataProxy::heightMapFile() const
@@ -330,11 +323,17 @@ QHeightMapSurfaceDataProxy *QHeightMapSurfaceDataProxyPrivate::qptr()
 
 void QHeightMapSurfaceDataProxyPrivate::setValueRanges(float minX, float maxX, float minZ, float maxZ)
 {
-    bool changed = false;
-    if (m_minXValue != minX || m_minZValue != minZ) {
+    bool minXChanged = false;
+    bool maxXChanged = false;
+    bool minZChanged = false;
+    bool maxZChanged = false;
+    if (m_minXValue != minX) {
         m_minXValue = minX;
+        minXChanged = true;
+    }
+    if (m_minZValue != minZ) {
         m_minZValue = minZ;
-        changed = true;
+        minZChanged = true;
     }
     if (m_maxXValue != maxX || minX >= maxX) {
         if (minX >= maxX) {
@@ -345,7 +344,7 @@ void QHeightMapSurfaceDataProxyPrivate::setValueRanges(float minX, float maxX, f
         } else {
             m_maxXValue = maxX;
         }
-        changed = true;
+        maxXChanged = true;
     }
     if (m_maxZValue != maxZ || minZ >= maxZ) {
         if (minZ >= maxZ) {
@@ -356,24 +355,38 @@ void QHeightMapSurfaceDataProxyPrivate::setValueRanges(float minX, float maxX, f
         } else {
             m_maxZValue = maxZ;
         }
-        changed = true;
+        maxZChanged = true;
     }
 
-    if (changed && !m_resolveTimer.isActive())
+    if (minXChanged)
+        emit qptr()->minXValueChanged(m_minXValue);
+    if (minZChanged)
+        emit qptr()->minZValueChanged(m_minZValue);
+    if (maxXChanged)
+        emit qptr()->maxXValueChanged(m_maxXValue);
+    if (maxZChanged)
+        emit qptr()->maxZValueChanged(m_maxZValue);
+
+    if ((minXChanged || minZChanged || maxXChanged || maxZChanged) && !m_resolveTimer.isActive())
         m_resolveTimer.start(0);
 }
 
 void QHeightMapSurfaceDataProxyPrivate::setMinXValue(float min)
 {
     if (min != m_minXValue) {
+        bool maxChanged = false;
         if (min >= m_maxXValue) {
             float oldMax = m_maxXValue;
             m_maxXValue = min + 1.0f;
             qWarning() << "Warning: Tried to set minimum X to equal or larger than maximum X for"
                           " value range. Maximum automatically adjusted to a valid one:"
                        << oldMax <<  "-->" << m_maxXValue;
+            maxChanged = true;
         }
         m_minXValue = min;
+        emit qptr()->minXValueChanged(m_minXValue);
+        if (maxChanged)
+            emit qptr()->maxXValueChanged(m_maxXValue);
 
         if (!m_resolveTimer.isActive())
             m_resolveTimer.start(0);
@@ -383,14 +396,19 @@ void QHeightMapSurfaceDataProxyPrivate::setMinXValue(float min)
 void QHeightMapSurfaceDataProxyPrivate::setMaxXValue(float max)
 {
     if (m_maxXValue != max) {
+        bool minChanged = false;
         if (max <= m_minXValue) {
             float oldMin = m_minXValue;
             m_minXValue = max - 1.0f;
             qWarning() << "Warning: Tried to set maximum X to equal or smaller than minimum X for"
                           " value range. Minimum automatically adjusted to a valid one:"
                        << oldMin <<  "-->" << m_minXValue;
+            minChanged = true;
         }
         m_maxXValue = max;
+        emit qptr()->maxXValueChanged(m_maxXValue);
+        if (minChanged)
+            emit qptr()->minXValueChanged(m_minXValue);
 
         if (!m_resolveTimer.isActive())
             m_resolveTimer.start(0);
@@ -400,14 +418,19 @@ void QHeightMapSurfaceDataProxyPrivate::setMaxXValue(float max)
 void QHeightMapSurfaceDataProxyPrivate::setMinZValue(float min)
 {
     if (min != m_minZValue) {
+        bool maxChanged = false;
         if (min >= m_maxZValue) {
             float oldMax = m_maxZValue;
             m_maxZValue = min + 1.0f;
             qWarning() << "Warning: Tried to set minimum Z to equal or larger than maximum Z for"
                           " value range. Maximum automatically adjusted to a valid one:"
                        << oldMax <<  "-->" << m_maxZValue;
+            maxChanged = true;
         }
         m_minZValue = min;
+        emit qptr()->minZValueChanged(m_minZValue);
+        if (maxChanged)
+            emit qptr()->maxZValueChanged(m_maxZValue);
 
         if (!m_resolveTimer.isActive())
             m_resolveTimer.start(0);
@@ -417,14 +440,19 @@ void QHeightMapSurfaceDataProxyPrivate::setMinZValue(float min)
 void QHeightMapSurfaceDataProxyPrivate::setMaxZValue(float max)
 {
     if (m_maxZValue != max) {
+        bool minChanged = false;
         if (max <= m_minZValue) {
             float oldMin = m_minZValue;
             m_minZValue = max - 1.0f;
             qWarning() << "Warning: Tried to set maximum Z to equal or smaller than minimum Z for"
                           " value range. Minimum automatically adjusted to a valid one:"
                        << oldMin <<  "-->" << m_minZValue;
+            minChanged = true;
         }
         m_maxZValue = max;
+        emit qptr()->maxZValueChanged(m_maxZValue);
+        if (minChanged)
+            emit qptr()->minZValueChanged(m_minZValue);
 
         if (!m_resolveTimer.isActive())
             m_resolveTimer.start(0);
@@ -434,6 +462,7 @@ void QHeightMapSurfaceDataProxyPrivate::setMaxZValue(float max)
 void QHeightMapSurfaceDataProxyPrivate::handlePendingResolve()
 {
     QImage heightImage = m_heightMap;
+
     // Convert to RGB32 to be sure we're reading the right bytes
     if (heightImage.format() != QImage::Format_RGB32)
         heightImage = heightImage.convertToFormat(QImage::Format_RGB32);
@@ -516,6 +545,7 @@ void QHeightMapSurfaceDataProxyPrivate::handlePendingResolve()
     }
 
     qptr()->resetArray(dataArray);
+    emit qptr()->heightMapChanged(m_heightMap);
 }
 
 QT_DATAVISUALIZATION_END_NAMESPACE
diff --git a/src/datavisualization/data/qheightmapsurfacedataproxy.h b/src/datavisualization/data/qheightmapsurfacedataproxy.h
index 3306059f..16132b0d 100644
--- a/src/datavisualization/data/qheightmapsurfacedataproxy.h
+++ b/src/datavisualization/data/qheightmapsurfacedataproxy.h
@@ -31,12 +31,12 @@ class QT_DATAVISUALIZATION_EXPORT QHeightMapSurfaceDataProxy : public QSurfaceDa
 {
     Q_OBJECT
 
-    Q_PROPERTY(QImage heightMap READ heightMap WRITE setHeightMap)
-    Q_PROPERTY(QString heightMapFile READ heightMapFile WRITE setHeightMapFile)
-    Q_PROPERTY(float minXValue READ minXValue WRITE setMinXValue)
-    Q_PROPERTY(float maxXValue READ maxXValue WRITE setMaxXValue)
-    Q_PROPERTY(float minZValue READ minZValue WRITE setMinZValue)
-    Q_PROPERTY(float maxZValue READ maxZValue WRITE setMaxZValue)
+    Q_PROPERTY(QImage heightMap READ heightMap WRITE setHeightMap NOTIFY heightMapChanged)
+    Q_PROPERTY(QString heightMapFile READ heightMapFile WRITE setHeightMapFile NOTIFY heightMapFileChanged)
+    Q_PROPERTY(float minXValue READ minXValue WRITE setMinXValue NOTIFY minXValueChanged)
+    Q_PROPERTY(float maxXValue READ maxXValue WRITE setMaxXValue NOTIFY maxXValueChanged)
+    Q_PROPERTY(float minZValue READ minZValue WRITE setMinZValue NOTIFY minZValueChanged)
+    Q_PROPERTY(float maxZValue READ maxZValue WRITE setMaxZValue NOTIFY maxZValueChanged)
 
 public:
     explicit QHeightMapSurfaceDataProxy(QObject *parent = 0);
@@ -45,7 +45,6 @@ public:
 
     void setHeightMap(const QImage &image);
     QImage heightMap() const;
-
     void setHeightMapFile(const QString &filename);
     QString heightMapFile() const;
 
@@ -59,6 +58,14 @@ public:
     void setMaxZValue(float max);
     float maxZValue() const;
 
+signals:
+    void heightMapChanged(QImage image);
+    void heightMapFileChanged(QString filename);
+    void minXValueChanged(float value);
+    void maxXValueChanged(float value);
+    void minZValueChanged(float value);
+    void maxZValueChanged(float value);
+
 protected:
     explicit QHeightMapSurfaceDataProxy(QHeightMapSurfaceDataProxyPrivate *d, QObject *parent = 0);
     QHeightMapSurfaceDataProxyPrivate *dptr();
diff --git a/src/datavisualization/data/qscatterdataproxy.cpp b/src/datavisualization/data/qscatterdataproxy.cpp
index ff37dd24..791e5dd6 100644
--- a/src/datavisualization/data/qscatterdataproxy.cpp
+++ b/src/datavisualization/data/qscatterdataproxy.cpp
@@ -109,6 +109,7 @@ void QScatterDataProxy::resetArray(QScatterDataArray *newArray)
         dptr()->resetArray(newArray);
 
     emit arrayReset();
+    emit itemCountChanged(itemCount());
 }
 
 /*!
@@ -138,6 +139,7 @@ int QScatterDataProxy::addItem(const QScatterDataItem &item)
 {
     int addIndex = dptr()->addItem(item);
     emit itemsAdded(addIndex, 1);
+    emit itemCountChanged(itemCount());
     return addIndex;
 }
 
@@ -150,6 +152,7 @@ int QScatterDataProxy::addItems(const QScatterDataArray &items)
 {
     int addIndex = dptr()->addItems(items);
     emit itemsAdded(addIndex, items.size());
+    emit itemCountChanged(itemCount());
     return addIndex;
 }
 
@@ -161,6 +164,7 @@ void QScatterDataProxy::insertItem(int index, const QScatterDataItem &item)
 {
     dptr()->insertItem(index, item);
     emit itemsInserted(index, 1);
+    emit itemCountChanged(itemCount());
 }
 
 /*!
@@ -170,6 +174,7 @@ void QScatterDataProxy::insertItems(int index, const QScatterDataArray &items)
 {
     dptr()->insertItems(index, items);
     emit itemsInserted(index, items.size());
+    emit itemCountChanged(itemCount());
 }
 
 /*!
@@ -180,6 +185,7 @@ void QScatterDataProxy::removeItems(int index, int removeCount)
 {
     dptr()->removeItems(index, removeCount);
     emit itemsRemoved(index, removeCount);
+    emit itemCountChanged(itemCount());
 }
 
 /*!
diff --git a/src/datavisualization/data/qscatterdataproxy.h b/src/datavisualization/data/qscatterdataproxy.h
index 13f10301..acb3d3d4 100644
--- a/src/datavisualization/data/qscatterdataproxy.h
+++ b/src/datavisualization/data/qscatterdataproxy.h
@@ -33,7 +33,7 @@ class QT_DATAVISUALIZATION_EXPORT QScatterDataProxy : public QAbstractDataProxy
 {
     Q_OBJECT
 
-    Q_PROPERTY(int itemCount READ itemCount)
+    Q_PROPERTY(int itemCount READ itemCount NOTIFY itemCountChanged)
     Q_PROPERTY(QScatter3DSeries *series READ series NOTIFY seriesChanged)
 
 public:
@@ -64,6 +64,8 @@ signals:
     void itemsChanged(int startIndex, int count);
     void itemsRemoved(int startIndex, int count);
     void itemsInserted(int startIndex, int count);
+
+    void itemCountChanged(int count);
     void seriesChanged(QScatter3DSeries *series);
 
 protected:
diff --git a/src/datavisualization/data/qsurfacedataproxy.cpp b/src/datavisualization/data/qsurfacedataproxy.cpp
index 678ffd8d..8deab6cc 100644
--- a/src/datavisualization/data/qsurfacedataproxy.cpp
+++ b/src/datavisualization/data/qsurfacedataproxy.cpp
@@ -137,6 +137,8 @@ void QSurfaceDataProxy::resetArray(QSurfaceDataArray *newArray)
         dptr()->resetArray(newArray);
     }
     emit arrayReset();
+    emit rowCountChanged(rowCount());
+    emit columnCountChanged(columnCount());
 }
 
 /*!
@@ -181,6 +183,7 @@ int QSurfaceDataProxy::addRow(QSurfaceDataRow *row)
 {
     int addIndex = dptr()->addRow(row);
     emit rowsAdded(addIndex, 1);
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -194,6 +197,7 @@ int QSurfaceDataProxy::addRows(const QSurfaceDataArray &rows)
 {
     int addIndex = dptr()->addRows(rows);
     emit rowsAdded(addIndex, rows.size());
+    emit rowCountChanged(rowCount());
     return addIndex;
 }
 
@@ -206,6 +210,7 @@ void QSurfaceDataProxy::insertRow(int rowIndex, QSurfaceDataRow *row)
 {
     dptr()->insertRow(rowIndex, row);
     emit rowsInserted(rowIndex, 1);
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -217,6 +222,7 @@ void QSurfaceDataProxy::insertRows(int rowIndex, const QSurfaceDataArray &rows)
 {
     dptr()->insertRows(rowIndex, rows);
     emit rowsInserted(rowIndex, rows.size());
+    emit rowCountChanged(rowCount());
 }
 
 /*!
@@ -228,6 +234,7 @@ void QSurfaceDataProxy::removeRows(int rowIndex, int removeCount)
     if (rowIndex < rowCount() && removeCount >= 1) {
         dptr()->removeRows(rowIndex, removeCount);
         emit rowsRemoved(rowIndex, removeCount);
+        emit rowCountChanged(rowCount());
     }
 }
 
diff --git a/src/datavisualization/data/qsurfacedataproxy.h b/src/datavisualization/data/qsurfacedataproxy.h
index c2a0fef2..04c6dbf7 100644
--- a/src/datavisualization/data/qsurfacedataproxy.h
+++ b/src/datavisualization/data/qsurfacedataproxy.h
@@ -34,8 +34,8 @@ class QT_DATAVISUALIZATION_EXPORT QSurfaceDataProxy : public QAbstractDataProxy
 {
     Q_OBJECT
 
-    Q_PROPERTY(int rowCount READ rowCount)
-    Q_PROPERTY(int columnCount READ columnCount)
+    Q_PROPERTY(int rowCount READ rowCount NOTIFY rowCountChanged)
+    Q_PROPERTY(int columnCount READ columnCount NOTIFY columnCountChanged)
     Q_PROPERTY(QSurface3DSeries *series READ series NOTIFY seriesChanged)
 
 public:
@@ -70,6 +70,9 @@ signals:
     void rowsRemoved(int startIndex, int count);
     void rowsInserted(int startIndex, int count);
     void itemChanged(int rowIndex, int columnIndex);
+
+    void rowCountChanged(int count);
+    void columnCountChanged(int count);
     void seriesChanged(QSurface3DSeries *series);
 
 protected:
diff --git a/src/datavisualization/engine/q3dcamera.h b/src/datavisualization/engine/q3dcamera.h
index 36764f14..6a9d8a0d 100644
--- a/src/datavisualization/engine/q3dcamera.h
+++ b/src/datavisualization/engine/q3dcamera.h
@@ -42,8 +42,8 @@ class QT_DATAVISUALIZATION_EXPORT Q3DCamera : public Q3DObject
     Q_PROPERTY(QMatrix4x4 viewMatrix READ viewMatrix WRITE setViewMatrix NOTIFY viewMatrixChanged)
     Q_PROPERTY(QtDataVisualization::QDataVis::CameraPreset cameraPreset READ cameraPreset WRITE setCameraPreset NOTIFY cameraPresetChanged)
     Q_PROPERTY(bool viewMatrixAutoUpdateEnabled READ isViewMatrixAutoUpdateEnabled WRITE setViewMatrixAutoUpdateEnabled NOTIFY viewMatrixAutoUpdateChanged)
-    Q_PROPERTY(bool wrapXRotation READ wrapXRotation WRITE setWrapXRotation NOTIFY wrapXRotationChanged )
-    Q_PROPERTY(bool wrapYRotation READ wrapYRotation WRITE setWrapYRotation NOTIFY wrapYRotationChanged )
+    Q_PROPERTY(bool wrapXRotation READ wrapXRotation WRITE setWrapXRotation NOTIFY wrapXRotationChanged)
+    Q_PROPERTY(bool wrapYRotation READ wrapYRotation WRITE setWrapYRotation NOTIFY wrapYRotationChanged)
     Q_ENUMS(QtDataVisualization::QDataVis::CameraPreset)
 
 public:
diff --git a/src/datavisualizationqml2/colorgradient.cpp b/src/datavisualizationqml2/colorgradient.cpp
index 43efbd1c..e4c16ebe 100644
--- a/src/datavisualizationqml2/colorgradient.cpp
+++ b/src/datavisualizationqml2/colorgradient.cpp
@@ -34,6 +34,7 @@ void ColorGradientStop::setPosition(qreal position)
 {
     m_position = position;
     updateGradient();
+    emit positionChanged(position);
 }
 
 QColor ColorGradientStop::color() const
@@ -45,6 +46,7 @@ void ColorGradientStop::setColor(const QColor &color)
 {
     m_color = color;
     updateGradient();
+    emit colorChanged(color);
 }
 
 void ColorGradientStop::updateGradient()
diff --git a/src/datavisualizationqml2/colorgradient_p.h b/src/datavisualizationqml2/colorgradient_p.h
index d1cc0543..21098142 100644
--- a/src/datavisualizationqml2/colorgradient_p.h
+++ b/src/datavisualizationqml2/colorgradient_p.h
@@ -39,8 +39,8 @@ class ColorGradientStop : public QObject
 {
     Q_OBJECT
 
-    Q_PROPERTY(qreal position READ position WRITE setPosition)
-    Q_PROPERTY(QColor color READ color WRITE setColor)
+    Q_PROPERTY(qreal position READ position WRITE setPosition NOTIFY positionChanged)
+    Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
 
 public:
     ColorGradientStop(QObject *parent = 0);
@@ -51,6 +51,10 @@ public:
     QColor color() const;
     void setColor(const QColor &color);
 
+signals:
+    void positionChanged(qreal position);
+    void colorChanged(QColor color);
+
 private:
     void updateGradient();
 
diff --git a/src/datavisualizationqml2/declarativebars.cpp b/src/datavisualizationqml2/declarativebars.cpp
index 4c7bccd7..a72e0399 100644
--- a/src/datavisualizationqml2/declarativebars.cpp
+++ b/src/datavisualizationqml2/declarativebars.cpp
@@ -37,6 +37,14 @@ DeclarativeBars::DeclarativeBars(QQuickItem *parent)
     // Create the shared component on the main GUI thread.
     m_barsController = new Bars3DController(boundingRect().toRect());
     AbstractDeclarative::setSharedController(m_barsController);
+
+    // TODO: Uncomment when doing QTRD-2669
+//    connect(m_barsController, &Bars3DController::rowAxisChanged,
+//            this, &DeclarativeBars::rowAxisChanged);
+//    connect(m_barsController, &Bars3DController::valueAxisChanged,
+//            this, &DeclarativeBars::valueAxisChanged);
+//    connect(m_barsController, &Bars3DController::columnAxisChanged,
+//            this, &DeclarativeBars::columnAxisChanged);
 }
 
 DeclarativeBars::~DeclarativeBars()
diff --git a/src/datavisualizationqml2/declarativebars_p.h b/src/datavisualizationqml2/declarativebars_p.h
index 4bfe3755..6f93e2d1 100644
--- a/src/datavisualizationqml2/declarativebars_p.h
+++ b/src/datavisualizationqml2/declarativebars_p.h
@@ -48,9 +48,9 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 class DeclarativeBars : public AbstractDeclarative
 {
     Q_OBJECT
-    Q_PROPERTY(Q3DCategoryAxis *rowAxis READ rowAxis WRITE setRowAxis)
-    Q_PROPERTY(Q3DValueAxis *valueAxis READ valueAxis WRITE setValueAxis)
-    Q_PROPERTY(Q3DCategoryAxis *columnAxis READ columnAxis WRITE setColumnAxis)
+    Q_PROPERTY(Q3DCategoryAxis *rowAxis READ rowAxis WRITE setRowAxis NOTIFY rowAxisChanged)
+    Q_PROPERTY(Q3DValueAxis *valueAxis READ valueAxis WRITE setValueAxis NOTIFY valueAxisChanged)
+    Q_PROPERTY(Q3DCategoryAxis *columnAxis READ columnAxis WRITE setColumnAxis NOTIFY columnAxisChanged)
     Q_PROPERTY(float barThickness READ barThickness WRITE setBarThickness NOTIFY barThicknessChanged)
     Q_PROPERTY(QSizeF barSpacing READ barSpacing WRITE setBarSpacing NOTIFY barSpacingChanged)
     Q_PROPERTY(bool barSpacingRelative READ isBarSpacingRelative WRITE setBarSpacingRelative NOTIFY barSpacingRelativeChanged)
@@ -88,6 +88,9 @@ public:
     Q_INVOKABLE void removeSeries(QBar3DSeries *series);
 
 signals:
+    void rowAxisChanged(Q3DCategoryAxis *axis);
+    void valueAxisChanged(Q3DValueAxis *axis);
+    void columnAxisChanged(Q3DCategoryAxis *axis);
     void barThicknessChanged(float thicknessRatio);
     void barSpacingChanged(QSizeF spacing);
     void barSpacingRelativeChanged(bool relative);
diff --git a/src/datavisualizationqml2/declarativescatter.cpp b/src/datavisualizationqml2/declarativescatter.cpp
index 40ef2926..483bb467 100644
--- a/src/datavisualizationqml2/declarativescatter.cpp
+++ b/src/datavisualizationqml2/declarativescatter.cpp
@@ -36,6 +36,14 @@ DeclarativeScatter::DeclarativeScatter(QQuickItem *parent)
     // Create the shared component on the main GUI thread.
     m_scatterController = new Scatter3DController(boundingRect().toRect());
     setSharedController(m_scatterController);
+
+    // TODO: Uncomment when doing QTRD-2669
+//    connect(m_scatterController, &Scatter3DController::axisXChanged,
+//            this, &DeclarativeBars::axisXChanged);
+//    connect(m_scatterController, &Scatter3DController::axisYChanged,
+//            this, &DeclarativeBars::axisYChanged);
+//    connect(m_scatterController, &Scatter3DController::axisZChanged,
+//            this, &DeclarativeBars::axisZChanged);
 }
 
 DeclarativeScatter::~DeclarativeScatter()
diff --git a/src/datavisualizationqml2/declarativescatter_p.h b/src/datavisualizationqml2/declarativescatter_p.h
index 8445b3d6..b9f5a3b7 100644
--- a/src/datavisualizationqml2/declarativescatter_p.h
+++ b/src/datavisualizationqml2/declarativescatter_p.h
@@ -46,9 +46,9 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 class DeclarativeScatter : public AbstractDeclarative
 {
     Q_OBJECT
-    Q_PROPERTY(Q3DValueAxis *axisX READ axisX WRITE setAxisX)
-    Q_PROPERTY(Q3DValueAxis *axisY READ axisY WRITE setAxisY)
-    Q_PROPERTY(Q3DValueAxis *axisZ READ axisZ WRITE setAxisZ)
+    Q_PROPERTY(Q3DValueAxis *axisX READ axisX WRITE setAxisX NOTIFY axisXChanged)
+    Q_PROPERTY(Q3DValueAxis *axisY READ axisY WRITE setAxisY NOTIFY axisYChanged)
+    Q_PROPERTY(Q3DValueAxis *axisZ READ axisZ WRITE setAxisZ NOTIFY axisZChanged)
     Q_PROPERTY(QQmlListProperty<QScatter3DSeries> seriesList READ seriesList)
     Q_CLASSINFO("DefaultProperty", "seriesList")
 
@@ -72,7 +72,9 @@ public:
     Q_INVOKABLE void removeSeries(QScatter3DSeries *series);
 
 signals:
-    void meshFileNameChanged(QString filename);
+    void axisXChanged(Q3DValueAxis *axis);
+    void axisYChanged(Q3DValueAxis *axis);
+    void axisZChanged(Q3DValueAxis *axis);
 
 protected:
     Scatter3DController *m_scatterController;
diff --git a/src/datavisualizationqml2/declarativesurface.cpp b/src/datavisualizationqml2/declarativesurface.cpp
index a450645f..b0adeb21 100644
--- a/src/datavisualizationqml2/declarativesurface.cpp
+++ b/src/datavisualizationqml2/declarativesurface.cpp
@@ -38,6 +38,14 @@ DeclarativeSurface::DeclarativeSurface(QQuickItem *parent)
     // Create the shared component on the main GUI thread.
     m_surfaceController = new Surface3DController(boundingRect().toRect());
     setSharedController(m_surfaceController);
+
+    // TODO: Uncomment when doing QTRD-2669
+//    connect(m_surfaceController, &Surface3DController::axisXChanged,
+//            this, &DeclarativeBars::axisXChanged);
+//    connect(m_surfaceController, &Surface3DController::axisYChanged,
+//            this, &DeclarativeBars::axisYChanged);
+//    connect(m_surfaceController, &Surface3DController::axisZChanged,
+//            this, &DeclarativeBars::axisZChanged);
 }
 
 DeclarativeSurface::~DeclarativeSurface()
diff --git a/src/datavisualizationqml2/declarativesurface_p.h b/src/datavisualizationqml2/declarativesurface_p.h
index 4c7377be..70963c4d 100644
--- a/src/datavisualizationqml2/declarativesurface_p.h
+++ b/src/datavisualizationqml2/declarativesurface_p.h
@@ -48,9 +48,9 @@ QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 class DeclarativeSurface : public AbstractDeclarative
 {
     Q_OBJECT
-    Q_PROPERTY(Q3DValueAxis *axisX READ axisX WRITE setAxisX)
-    Q_PROPERTY(Q3DValueAxis *axisY READ axisY WRITE setAxisY)
-    Q_PROPERTY(Q3DValueAxis *axisZ READ axisZ WRITE setAxisZ)
+    Q_PROPERTY(Q3DValueAxis *axisX READ axisX WRITE setAxisX NOTIFY axisXChanged)
+    Q_PROPERTY(Q3DValueAxis *axisY READ axisY WRITE setAxisY NOTIFY axisYChanged)
+    Q_PROPERTY(Q3DValueAxis *axisZ READ axisZ WRITE setAxisZ NOTIFY axisZChanged)
     Q_PROPERTY(ColorGradient *gradient READ gradient WRITE setGradient)
     Q_PROPERTY(QQmlListProperty<QSurface3DSeries> seriesList READ seriesList)
     Q_CLASSINFO("DefaultProperty", "seriesList")
@@ -77,6 +77,11 @@ public:
     Q_INVOKABLE void addSeries(QSurface3DSeries *series);
     Q_INVOKABLE void removeSeries(QSurface3DSeries *series);
 
+signals:
+    void axisXChanged(Q3DValueAxis *axis);
+    void axisYChanged(Q3DValueAxis *axis);
+    void axisZChanged(Q3DValueAxis *axis);
+
 protected:
     void handleGradientUpdate();