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examples/realtime/ScrollBar.h

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+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#pragma once
+
+#include <QScrollBar>
+
+class ScrollBar : public QScrollBar
+{
+    Q_OBJECT
+
+  public:
+    ScrollBar( QWidget* parent = NULL );
+    ScrollBar( Qt::Orientation, QWidget* parent = NULL );
+    ScrollBar( double minBase, double maxBase,
+        Qt::Orientation o, QWidget* parent = NULL );
+
+    void setInverted( bool );
+    bool isInverted() const;
+
+    double minBaseValue() const;
+    double maxBaseValue() const;
+
+    double minSliderValue() const;
+    double maxSliderValue() const;
+
+    int extent() const;
+
+  Q_SIGNALS:
+    void sliderMoved( Qt::Orientation, double, double );
+    void valueChanged( Qt::Orientation, double, double );
+
+  public Q_SLOTS:
+    virtual void setBase( double min, double max );
+    virtual void moveSlider( double min, double max );
+
+  protected:
+    void sliderRange( int value, double& min, double& max ) const;
+    int mapToTick( double ) const;
+    double mapFromTick( int ) const;
+
+  private Q_SLOTS:
+    void catchValueChanged( int value );
+    void catchSliderMoved( int value );
+
+  private:
+    void init();
+
+    bool m_inverted;
+    double m_minBase;
+    double m_maxBase;
+    int m_baseTicks;
+};