qwt_polar_picker.h

/******************************************************************************
 * QwtPolar Widget Library
 * Copyright (C) 2008   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_POLAR_PICKER_H
#define QWT_POLAR_PICKER_H
 
#include "qwt_global.h"
#include "qwt_picker.h"
 
#include <qvector.h>
#include <qpainterpath.h>
 
class QwtPolarPlot;
class QwtPolarCanvas;
class QwtPointPolar;
 
class QWT_EXPORT QwtPolarPicker : public QwtPicker
{
    Q_OBJECT
 
public:
    explicit QwtPolarPicker(QwtPolarCanvas*);
    ~QwtPolarPicker() override;
 
    explicit QwtPolarPicker(RubberBand rubberBand, DisplayMode trackerMode, QwtPolarCanvas*);
 
    QwtPolarPlot* plot();
    const QwtPolarPlot* plot() const;
 
    QwtPolarCanvas* canvas();
    const QwtPolarCanvas* canvas() const;
 
    virtual QRect pickRect() const;
 
Q_SIGNALS:
 
    void selected(const QwtPointPolar& pos);
 
    void selected(const QVector< QwtPointPolar >& points);
 
    void appended(const QwtPointPolar& pos);
 
    void moved(const QwtPointPolar& pos);
 
protected:
    QwtPointPolar invTransform(const QPoint&) const;
 
    virtual QwtText trackerText(const QPoint&) const override;
    virtual QwtText trackerTextPolar(const QwtPointPolar&) const;
 
    virtual void move(const QPoint&) override;
    virtual void append(const QPoint&) override;
    virtual bool end(bool ok = true) override;
 
private:
    virtual QPainterPath pickArea() const override;
 
    QWT_DECLARE_PRIVATE(QwtPolarPicker)
};
 
#endif