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diff --git a/src/libpcp_qwt/src/qwt_plot_scaleitem.h b/src/libpcp_qwt/src/qwt_plot_scaleitem.h
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+/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
+ * Qwt Widget Library
+ * Copyright (C) 1997   Josef Wilgen
+ * Copyright (C) 2002   Uwe Rathmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the Qwt License, Version 1.0
+ *****************************************************************************/
+
+#ifndef QWT_PLOT_SCALE_ITEM_H
+#define QWT_PLOT_SCALE_ITEM_H
+
+#include "qwt_global.h"
+#include "qwt_plot_item.h"
+#include "qwt_scale_draw.h"
+
+class QPalette;
+
+/*!
+  \brief A class which draws a scale inside the plot canvas
+
+  QwtPlotScaleItem can be used to draw an axis inside the plot canvas.
+  It might by synchronized to one of the axis of the plot, but can
+  also display its own ticks and labels.
+
+  It is allowed to synchronize the scale item with a disabled axis.
+  In plots with vertical and horizontal scale items, it might be
+  necessary to remove ticks at the intersections, by overloading
+  updateScaleDiv().
+
+  The scale might be at a specific position (f.e 0.0) or it might be
+  aligned to a canvas border.
+
+  \par Example
+  The following example shows how to replace the left axis, by a scale item
+  at the x position 0.0.
+  \verbatim
+QwtPlotScaleItem *scaleItem =
+    new QwtPlotScaleItem(QwtScaleDraw::RightScale, 0.0);
+scaleItem->setFont(plot->axisWidget(QwtPlot::yLeft)->font());
+scaleItem->attach(plot);
+
+plot->enableAxis(QwtPlot::yLeft, false);
+\endverbatim
+*/
+
+class QWT_EXPORT QwtPlotScaleItem: public QwtPlotItem
+{
+public:
+    explicit QwtPlotScaleItem(
+        QwtScaleDraw::Alignment = QwtScaleDraw::BottomScale,
+        const double pos = 0.0 );
+
+    virtual ~QwtPlotScaleItem();
+
+    virtual int rtti() const;
+
+    void setScaleDiv( const QwtScaleDiv& );
+    const QwtScaleDiv& scaleDiv() const;
+
+    void setScaleDivFromAxis( bool on );
+    bool isScaleDivFromAxis() const;
+
+    void setPalette( const QPalette & );
+    QPalette palette() const;
+
+    void setFont( const QFont& );
+    QFont font() const;
+
+    void setScaleDraw( QwtScaleDraw * );
+
+    const QwtScaleDraw *scaleDraw() const;
+    QwtScaleDraw *scaleDraw();
+
+    void setPosition( double pos );
+    double position() const;
+
+    void setBorderDistance( int numPixels );
+    int borderDistance() const;
+
+    void setAlignment( QwtScaleDraw::Alignment );
+
+    virtual void draw( QPainter *p,
+        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
+        const QRectF &rect ) const;
+
+    virtual void updateScaleDiv( const QwtScaleDiv &, const QwtScaleDiv & );
+
+private:
+    class PrivateData;
+    PrivateData *d_data;
+};
+
+#endif