QGIS/python/gui/qgsmapcanvasitem.sip

class QgsMapCanvasItem : QGraphicsItem
{
%TypeHeaderCode
#include <qgsmapcanvasitem.h>
%End

  protected:

    //! protected constructor: cannot be constructed directly
    QgsMapCanvasItem( QgsMapCanvas *mapCanvas /TransferThis/ );

    virtual ~QgsMapCanvasItem();

    //! function to be implemented by derived classes
    virtual void paint( QPainter *painter ) = 0;

    virtual void paint( QPainter * painter,
                        const QStyleOptionGraphicsItem * option,
                        QWidget *widget = 0 );

    //! schedules map canvas for repaint
    void updateCanvas();

    /** Sets render context parameters
    @param p painter for rendering
    @param context out: configured context
    @return true in case of success */
    bool setRenderContextVariables( QPainter *p, QgsRenderContext &context ) const;

  public:

    //! called on changed extent or resize event to update position of the item
    virtual void updatePosition();

    virtual QRectF boundingRect() const;

    //! returns canvas item rectangle in map units
    QgsRectangle rect() const;

    //! sets canvas item rectangle in map units
    void setRect( const QgsRectangle &r, bool resetRotation = true );

    //! transformation from screen coordinates to map coordinates
    QgsPoint toMapCoordinates( QPoint point ) const;

    //! transformation from map coordinates to screen coordinates
    QPointF toCanvasCoordinates( const QgsPoint &point ) const;
};