Axis abstraction

Axis related data is now stored in separate axis classes, but
have not yet been exposed beyond QDataSet.

Also contains unrelated gitignore change

Change-Id: I130ee6557accfab672d5014f47bb74be08e6feef
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

10 files changed, 740 insertions, 0 deletions

diff --git a/src/datavis3d/axis/axis.pri b/src/datavis3d/axis/axis.pri
new file mode 100644
index 00000000..7d5a1c6f
--- /dev/null
+++ b/src/datavis3d/axis/axis.pri
@@ -0,0 +1,12 @@
+HEADERS += \
+    $$PWD/qabstractaxis.h \
+    $$PWD/qabstractaxis_p.h \
+    $$PWD/qvalueaxis.h \
+    $$PWD/qvalueaxis_p.h \
+    $$PWD/qcategoryaxis.h \
+    $$PWD/qcategoryaxis_p.h
+
+SOURCES += \
+    $$PWD/qabstractaxis.cpp \
+    $$PWD/qvalueaxis.cpp \
+    $$PWD/qcategoryaxis.cpp
diff --git a/src/datavis3d/axis/qabstractaxis.cpp b/src/datavis3d/axis/qabstractaxis.cpp
new file mode 100644
index 00000000..31382bc6
--- /dev/null
+++ b/src/datavis3d/axis/qabstractaxis.cpp
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qabstractaxis.h"
+#include "qabstractaxis_p.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+QAbstractAxis::QAbstractAxis(QAbstractAxisPrivate *d, QObject *parent) :
+    QObject(parent),
+    d_ptr(d)
+{
+}
+
+QAbstractAxis::~QAbstractAxis()
+{
+}
+
+QString QAbstractAxis::title() const
+{
+    return d_ptr->m_title;
+}
+
+QVector<QString> QAbstractAxis::labels() const
+{
+    return d_ptr->m_labels;
+}
+
+void QAbstractAxis::setTitle(QString title)
+{
+    if (d_ptr->m_title != title) {
+        d_ptr->m_title = title;
+        // Generate axis label texture
+        if (d_ptr->m_drawer)
+            d_ptr->m_drawer->generateLabelItem(&d_ptr->m_titleItem, title);
+        emit titleChanged(title);
+    }
+}
+
+// QAbstractAxisPrivate
+
+QAbstractAxisPrivate::QAbstractAxisPrivate(QAbstractAxis *q)
+    : q_ptr(q),
+      m_drawer(0)
+{
+}
+
+QAbstractAxisPrivate::~QAbstractAxisPrivate()
+{
+    m_titleItem.clear();
+    for (int i = 0; i < m_labelItems.size(); i++)
+        m_labelItems[i].clear();
+}
+
+void QAbstractAxisPrivate::setDrawer(Drawer *drawer)
+{
+    m_drawer = drawer;
+    connect(m_drawer, SIGNAL(drawerChanged()), this, SLOT(updateTextures()));
+    updateTextures();
+}
+
+void QAbstractAxisPrivate::updateTextures()
+{
+    if (m_title.isEmpty())
+        m_titleItem.clear();
+    else
+        m_drawer->generateLabelItem(&m_titleItem, m_title);
+
+    updateLabels();
+}
+
+void QAbstractAxisPrivate::updateLabels()
+{
+    // Default implementation does nothing.
+}
+
+QT_DATAVIS3D_END_NAMESPACE
diff --git a/src/datavis3d/axis/qabstractaxis.h b/src/datavis3d/axis/qabstractaxis.h
new file mode 100644
index 00000000..f64a4f35
--- /dev/null
+++ b/src/datavis3d/axis/qabstractaxis.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTAXIS_H
+#define QABSTRACTAXIS_H
+
+#include "qdatavis3dnamespace.h"
+#include <QObject>
+#include <QScopedPointer>
+#include <QVector>
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QAbstractAxisPrivate;
+
+class QT_DATAVIS3D_EXPORT QAbstractAxis : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QString title READ title WRITE setTitle NOTIFY titleChanged)
+
+protected:
+    explicit QAbstractAxis(QAbstractAxisPrivate *d, QObject *parent = 0);
+public:
+    virtual ~QAbstractAxis();
+
+    QString title() const;
+    QVector<QString> labels() const;
+
+public slots:
+    void setTitle(QString title);
+
+signals:
+    void titleChanged(QString newTitle);
+
+protected:
+    QScopedPointer<QAbstractAxisPrivate> d_ptr;
+
+private:
+    Q_DISABLE_COPY(QAbstractAxis)
+
+    friend class QDataSetPrivate;
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QABSTRACTAXIS_H
diff --git a/src/datavis3d/axis/qabstractaxis_p.h b/src/datavis3d/axis/qabstractaxis_p.h
new file mode 100644
index 00000000..82e0adbb
--- /dev/null
+++ b/src/datavis3d/axis/qabstractaxis_p.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVis3D API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#include "qabstractaxis.h"
+#include "drawer_p.h"
+#include "labelitem_p.h"
+
+#ifndef QABSTRACTAXIS_P_H
+#define QABSTRACTAXIS_P_H
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QT_DATAVIS3D_EXPORT QAbstractAxisPrivate : public QObject
+{
+    Q_OBJECT
+public:
+    QAbstractAxisPrivate(QAbstractAxis *q);
+    virtual ~QAbstractAxisPrivate();
+
+    void setDrawer(Drawer *drawer);
+    QVector<LabelItem> labelItems() { return m_labelItems; }
+    LabelItem titleItem() { return m_titleItem; }
+
+public slots:
+    void updateTextures();
+
+protected:
+    virtual void updateLabels();
+
+    QAbstractAxis *q_ptr;
+
+    QString m_title;
+    LabelItem m_titleItem;
+    Drawer *m_drawer; // not owned
+    QVector<QString> m_labels;
+    QVector<LabelItem> m_labelItems;
+
+    friend class QAbstractAxis;
+    friend class QValueAxis;
+    friend class QCategoryAxis;
+    friend class QDataSetPrivate;
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QABSTRACTAXIS_P_H
diff --git a/src/datavis3d/axis/qcategoryaxis.cpp b/src/datavis3d/axis/qcategoryaxis.cpp
new file mode 100644
index 00000000..30e466fc
--- /dev/null
+++ b/src/datavis3d/axis/qcategoryaxis.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcategoryaxis.h"
+#include "qcategoryaxis_p.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+QCategoryAxis::QCategoryAxis(QObject *parent) :
+    QAbstractAxis(new QCategoryAxisPrivate(this), parent)
+{
+}
+
+QCategoryAxis::~QCategoryAxis()
+{
+}
+
+void QCategoryAxis::setLabels(const QVector<QString> &labels)
+{
+    int newSize(labels.size());
+    int oldSize(d_ptr->m_labels.size());
+
+    for (int i = oldSize - 1; i >= newSize; i--)
+        d_ptr->m_labelItems[i].clear();
+
+    d_ptr->m_labelItems.resize(newSize);
+
+    if (d_ptr->m_drawer) {
+        for (int i = 0; i < newSize; i++) {
+            if (i >= oldSize || labels.at(i) != d_ptr->m_labels.at(i))
+                d_ptr->m_drawer->generateLabelItem(&d_ptr->m_labelItems[i], labels.at(i));
+        }
+    }
+
+    d_ptr->m_labels = labels;
+}
+
+QCategoryAxisPrivate::QCategoryAxisPrivate(QCategoryAxis *q)
+    : QAbstractAxisPrivate(q)
+{
+}
+
+QCategoryAxisPrivate::~QCategoryAxisPrivate()
+{
+}
+
+void QCategoryAxisPrivate::updateLabels()
+{
+    for (int i = 0; i < m_labels.size(); i++)
+        m_drawer->generateLabelItem(&m_labelItems[i], m_labels.at(i));
+}
+
+QT_DATAVIS3D_END_NAMESPACE
diff --git a/src/datavis3d/axis/qcategoryaxis.h b/src/datavis3d/axis/qcategoryaxis.h
new file mode 100644
index 00000000..e66b397f
--- /dev/null
+++ b/src/datavis3d/axis/qcategoryaxis.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCATEGORYAXIS_H
+#define QCATEGORYAXIS_H
+
+#include "qabstractaxis.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QT_DATAVIS3D_EXPORT QCategoryAxis : public QAbstractAxis
+{
+    Q_OBJECT
+public:
+    explicit QCategoryAxis(QObject *parent = 0);
+    ~QCategoryAxis();
+
+    void setLabels(const QVector<QString> &labels);
+
+private:
+    Q_DISABLE_COPY(QCategoryAxis)
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QCATEGORYAXIS_H
diff --git a/src/datavis3d/axis/qcategoryaxis_p.h b/src/datavis3d/axis/qcategoryaxis_p.h
new file mode 100644
index 00000000..174a2934
--- /dev/null
+++ b/src/datavis3d/axis/qcategoryaxis_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVis3D API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#include "qcategoryaxis.h"
+#include "qabstractaxis_p.h"
+
+#ifndef QCATEGORYAXIS_P_H
+#define QCATEGORYAXIS_P_H
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QT_DATAVIS3D_EXPORT QCategoryAxisPrivate : public QAbstractAxisPrivate
+{
+    Q_OBJECT
+
+public:
+    QCategoryAxisPrivate(QCategoryAxis *q);
+    ~QCategoryAxisPrivate();
+
+protected:
+    void updateLabels();
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QCATEGORYAXIS_P_H
diff --git a/src/datavis3d/axis/qvalueaxis.cpp b/src/datavis3d/axis/qvalueaxis.cpp
new file mode 100644
index 00000000..757f8762
--- /dev/null
+++ b/src/datavis3d/axis/qvalueaxis.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qvalueaxis.h"
+#include "qvalueaxis_p.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+QValueAxis::QValueAxis(QObject *parent) :
+    QAbstractAxis(new QValueAxisPrivate(this), parent)
+{
+}
+
+QValueAxis::~QValueAxis()
+{
+}
+
+QValueAxisPrivate::QValueAxisPrivate(QValueAxis *q)
+    : QAbstractAxisPrivate(q)
+{
+}
+
+QValueAxisPrivate::~QValueAxisPrivate()
+{
+}
+
+void QValueAxisPrivate::updateLabels()
+{
+    // TODO
+}
+
+QT_DATAVIS3D_END_NAMESPACE
diff --git a/src/datavis3d/axis/qvalueaxis.h b/src/datavis3d/axis/qvalueaxis.h
new file mode 100644
index 00000000..bb496653
--- /dev/null
+++ b/src/datavis3d/axis/qvalueaxis.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVALUEAXIS_H
+#define QVALUEAXIS_H
+
+#include "qabstractaxis.h"
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QT_DATAVIS3D_EXPORT QValueAxis : public QAbstractAxis
+{
+    Q_OBJECT
+public:
+    explicit QValueAxis(QObject *parent = 0);
+    ~QValueAxis();
+
+private:
+    Q_DISABLE_COPY(QValueAxis)
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QVALUEAXIS_H
diff --git a/src/datavis3d/axis/qvalueaxis_p.h b/src/datavis3d/axis/qvalueaxis_p.h
new file mode 100644
index 00000000..50091e43
--- /dev/null
+++ b/src/datavis3d/axis/qvalueaxis_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVis3D API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#include "qvalueaxis.h"
+#include "qabstractaxis_p.h"
+
+#ifndef QVALUEAXIS_P_H
+#define QVALUEAXIS_P_H
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QT_DATAVIS3D_EXPORT QValueAxisPrivate : public QAbstractAxisPrivate
+{
+    Q_OBJECT
+
+public:
+    QValueAxisPrivate(QValueAxis *q);
+    ~QValueAxisPrivate();
+
+protected:
+    void updateLabels();
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif // QVALUEAXIS_P_H