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examples/oscilloscope/SignalData.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 <QRect>
+
+class SignalData
+{
+  public:
+    static SignalData& instance();
+
+    void append( const QPointF& pos );
+    void clearStaleValues( double min );
+
+    int size() const;
+    QPointF value( int index ) const;
+
+    QRectF boundingRect() const;
+
+    void lock();
+    void unlock();
+
+  private:
+    SignalData();
+    ~SignalData();
+
+    Q_DISABLE_COPY( SignalData )
+
+    class PrivateData;
+    PrivateData* m_data;
+};