Qwt User's Guide 5.2.2

qwt_plot_picker.h

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  * 
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 // vim: expandtab
00011 
00012 #ifndef QWT_PLOT_PICKER_H
00013 #define QWT_PLOT_PICKER_H
00014 
00015 #include "qwt_double_rect.h"
00016 #include "qwt_plot_canvas.h"
00017 #include "qwt_picker.h"
00018 
00019 class QwtPlot;
00020 
00029 class QWT_EXPORT QwtPlotPicker: public QwtPicker
00030 {
00031     Q_OBJECT
00032 
00033 public:
00034     explicit QwtPlotPicker(QwtPlotCanvas *);
00035     virtual ~QwtPlotPicker();
00036 
00037     explicit QwtPlotPicker(int xAxis, int yAxis,
00038         QwtPlotCanvas *);
00039 
00040     explicit QwtPlotPicker(int xAxis, int yAxis, int selectionFlags, 
00041         RubberBand rubberBand, DisplayMode trackerMode, 
00042         QwtPlotCanvas *);
00043 
00044     virtual void setAxis(int xAxis, int yAxis);
00045 
00046     int xAxis() const;
00047     int yAxis() const;
00048 
00049     QwtPlot *plot();
00050     const QwtPlot *plot() const;
00051     
00052     QwtPlotCanvas *canvas();
00053     const QwtPlotCanvas *canvas() const;
00054 
00055 signals:
00056 
00061     void selected(const QwtDoublePoint &pos);
00062 
00067     void selected(const QwtDoubleRect &rect);
00068 
00075     void selected(const QwtArray<QwtDoublePoint> &pa);
00076 
00083     void appended(const QwtDoublePoint &pos);
00084 
00092     void moved(const QwtDoublePoint &pos);
00093 
00094 protected:
00095     QwtDoubleRect scaleRect() const;
00096 
00097     QwtDoubleRect invTransform(const QRect &) const;
00098     QRect transform(const QwtDoubleRect &) const;
00099 
00100     QwtDoublePoint invTransform(const QPoint &) const;
00101     QPoint transform(const QwtDoublePoint &) const;
00102 
00103     virtual QwtText trackerText(const QPoint &) const;
00104     virtual QwtText trackerText(const QwtDoublePoint &) const;
00105 
00106     virtual void move(const QPoint &);
00107     virtual void append(const QPoint &);
00108     virtual bool end(bool ok = true);
00109 
00110 private:
00111     int d_xAxis;
00112     int d_yAxis;
00113 };
00114             
00115 #endif