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examples/dials/AttitudeIndicator.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 <QwtDial>
+
+class AttitudeIndicator : public QwtDial
+{
+    Q_OBJECT
+
+  public:
+    AttitudeIndicator( QWidget* parent = NULL );
+
+    double angle() const { return value(); }
+    double gradient() const { return m_gradient; }
+
+  public Q_SLOTS:
+    void setGradient( double );
+    void setAngle( double angle ) { setValue( angle ); }
+
+  protected:
+    virtual void keyPressEvent( QKeyEvent* ) QWT_OVERRIDE;
+
+    virtual void drawScale( QPainter*,
+        const QPointF& center, double radius ) const QWT_OVERRIDE;
+
+    virtual void drawScaleContents( QPainter* painter,
+        const QPointF& center, double radius ) const QWT_OVERRIDE;
+
+  private:
+    double m_gradient;
+};