qwt_polar_item.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_ITEM_H
#define QWT_POLAR_ITEM_H
 
#include "qwt_global.h"
#include "qwt_text.h"
#include "qwt_legend_data.h"
#include "qwt_graphic.h"
#include "qwt_interval.h"
 
class QString;
class QRect;
class QPointF;
class QPainter;
class QwtPolarPlot;
class QwtScaleMap;
class QwtScaleDiv;
 
class QWT_EXPORT QwtPolarItem
{
public:
    enum RttiValues
    {
        Rtti_PolarItem = 0,
 
        Rtti_PolarGrid,
 
        Rtti_PolarMarker,
 
        Rtti_PolarCurve,
 
        Rtti_PolarSpectrogram,
 
        Rtti_PolarUserItem = 1000
    };
 
    enum ItemAttribute
    {
        Legend = 0x01,
 
        AutoScale = 0x02
    };
 
    Q_DECLARE_FLAGS(ItemAttributes, ItemAttribute)
 
    
    enum RenderHint
    {
        RenderAntialiased = 0x01
    };
 
    Q_DECLARE_FLAGS(RenderHints, RenderHint)
 
    
    explicit QwtPolarItem(const QwtText& title = QwtText());
    virtual ~QwtPolarItem();
 
    void attach(QwtPolarPlot* plot);
    void detach();
 
    QwtPolarPlot* plot() const;
 
    void setTitle(const QString& title);
    void setTitle(const QwtText& title);
    const QwtText& title() const;
 
    virtual int rtti() const;
 
    void setItemAttribute(ItemAttribute, bool on = true);
    bool testItemAttribute(ItemAttribute) const;
 
    void setRenderHint(RenderHint, bool on = true);
    bool testRenderHint(RenderHint) const;
 
    void setRenderThreadCount(uint numThreads);
    uint renderThreadCount() const;
 
    double z() const;
    void setZ(double z);
 
    void show();
    void hide();
    virtual void setVisible(bool);
    bool isVisible() const;
 
    virtual void itemChanged();
    virtual void legendChanged();
 
    virtual void draw(QPainter* painter,
                      const QwtScaleMap& azimuthMap,
                      const QwtScaleMap& radialMap,
                      const QPointF& pole,
                      double radius,
                      const QRectF& canvasRect) const = 0;
 
    virtual QwtInterval boundingInterval(int scaleId) const;
 
    virtual void updateScaleDiv(const QwtScaleDiv&, const QwtScaleDiv&, const QwtInterval&);
 
    virtual int marginHint() const;
 
    void setLegendIconSize(const QSize&);
    QSize legendIconSize() const;
 
    virtual QList< QwtLegendData > legendData() const;
    virtual QwtGraphic legendIcon(int index, const QSizeF&) const;
 
private:
    QwtPolarItem(const QwtPolarItem&)            = delete;
    QwtPolarItem& operator=(const QwtPolarItem&) = delete;
 
    QWT_DECLARE_PRIVATE(QwtPolarItem)
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS(QwtPolarItem::ItemAttributes)
Q_DECLARE_OPERATORS_FOR_FLAGS(QwtPolarItem::RenderHints)
 
Q_DECLARE_METATYPE(QwtPolarItem*)
 
#endif