qwt_plot_canvas.h

/******************************************************************************
 * 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_CANVAS_H
#define QWT_PLOT_CANVAS_H
 
#include "qwt_global.h"
#include "qwt_plot_abstract_canvas.h"
 
#include <qframe.h>
 
class QwtPlot;
class QPixmap;
class QPainterPath;
 
class QWT_EXPORT QwtPlotCanvas : public QFrame, public QwtPlotAbstractCanvas
{
    Q_OBJECT
 
    Q_PROPERTY( double borderRadius READ borderRadius WRITE setBorderRadius )
 
  public:
 
    enum PaintAttribute
    {
        BackingStore = 1,
 
        Opaque       = 2,
 
        HackStyledBackground = 4,
 
        ImmediatePaint = 8
    };
 
    Q_DECLARE_FLAGS( PaintAttributes, PaintAttribute )
 
    explicit QwtPlotCanvas( QwtPlot* = NULL );
    virtual ~QwtPlotCanvas();
 
    void setPaintAttribute( PaintAttribute, bool on = true );
    bool testPaintAttribute( PaintAttribute ) const;
 
    const QPixmap* backingStore() const;
    Q_INVOKABLE void invalidateBackingStore();
 
    virtual bool event( QEvent* ) QWT_OVERRIDE;
 
    Q_INVOKABLE QPainterPath borderPath( const QRect& ) const;
 
  public Q_SLOTS:
    void replot();
 
  protected:
    virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
    virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
 
    virtual void drawBorder( QPainter* ) QWT_OVERRIDE;
 
  private:
    class PrivateData;
    PrivateData* m_data;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotCanvas::PaintAttributes )
 
#endif