Introduce value axis formatter

Currently only used for label formatting.

Also some other preparatory changes for logaxis.

Task-number: QTRD-2787

Note: Not to be merged until 1.0 is released

Change-Id: I2d7ab70b9c51677d0edd5b0226fb779c9e346286
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/src/datavisualization/axis/qvalue3daxisformatter.h b/src/datavisualization/axis/qvalue3daxisformatter.h
new file mode 100644
index 00000000..a67b6094
--- /dev/null
+++ b/src/datavisualization/axis/qvalue3daxisformatter.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#ifndef QVALUE3DAXISFORMATTER_H
+#define QVALUE3DAXISFORMATTER_H
+
+#include <QtDataVisualization/qdatavisualizationglobal.h>
+#include <QtCore/QObject>
+#include <QtCore/QScopedPointer>
+
+QT_BEGIN_NAMESPACE_DATAVISUALIZATION
+
+class QValue3DAxisFormatterPrivate;
+class QValue3DAxis;
+
+class QT_DATAVISUALIZATION_EXPORT QValue3DAxisFormatter : public QObject
+{
+    Q_OBJECT
+
+protected:
+    explicit QValue3DAxisFormatter(QValue3DAxisFormatterPrivate *d, QObject *parent = 0);
+public:
+    explicit QValue3DAxisFormatter(QObject *parent = 0);
+    virtual ~QValue3DAxisFormatter();
+
+    virtual bool allowNegatives() const;
+    virtual bool allowZero() const;
+
+    // Getters not const as they can trigger recalculate
+    float gridPosition(int index);
+    float subGridPosition(int subGridIndex, int segmentIndex);
+    float labelPosition(int index);
+    QString stringForValue(float value, const QString &format);
+    float positionAt(float value);
+    float valueAt(float position);
+
+    virtual QValue3DAxisFormatter *createNewInstance();
+    void populateCopy(QValue3DAxisFormatter &copy);
+
+protected:
+    void markDirty();
+    QValue3DAxis *axis() const;
+
+    virtual void doRecalculate();
+    virtual QString doStringForValue(float value, const QString &format);
+    virtual float doPositionAt(float value);
+    virtual float doValueAt(float position);
+    virtual void doPopulateCopy(QValue3DAxisFormatter &copy);
+
+    QVector<float> &gridPositions();
+    QVector<QVector<float> > &subGridPositions();
+    QVector<float> &labelPositions();
+
+    QScopedPointer<QValue3DAxisFormatterPrivate> d_ptr;
+
+private:
+    Q_DISABLE_COPY(QValue3DAxisFormatter)
+
+    friend class Abstract3DController;
+    friend class QValue3DAxisFormatterPrivate;
+    friend class QValue3DAxis;
+};
+
+QT_END_NAMESPACE_DATAVISUALIZATION
+
+#endif