彻底改版2.0

third/3rd_qwt/qwt_plot_panner.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_PANNER_H
+#define QWT_PLOT_PANNER_H 1
+
+#include "qwt_global.h"
+#include "qwt_panner.h"
+
+class QwtPlot;
+
+/*!
+  \brief QwtPlotPanner provides panning of a plot canvas
+
+  QwtPlotPanner is a panner for a plot canvas, that
+  adjusts the scales of the axes after dropping
+  the canvas on its new position.
+
+  Together with QwtPlotZoomer and QwtPlotMagnifier powerful ways
+  of navigating on a QwtPlot widget can be implemented easily.
+
+  \note The axes are not updated, while dragging the canvas
+  \sa QwtPlotZoomer, QwtPlotMagnifier
+*/
+class QWT_EXPORT QwtPlotPanner: public QwtPanner
+{
+    Q_OBJECT
+
+public:
+    explicit QwtPlotPanner( QWidget * );
+    virtual ~QwtPlotPanner();
+
+    QWidget *canvas();
+    const QWidget *canvas() const;
+
+    QwtPlot *plot();
+    const QwtPlot *plot() const;
+
+    void setAxisEnabled( int axis, bool on );
+    bool isAxisEnabled( int axis ) const;
+
+protected Q_SLOTS:
+    virtual void moveCanvas( int dx, int dy );
+
+protected:
+    virtual QBitmap contentsMask() const;
+    virtual QPixmap grab() const;
+
+private:
+    class PrivateData;
+    PrivateData *d_data;
+};
+
+#endif