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/**An annotation item can be either placed either on screen corrdinates or on map coordinates.
It may reference a feature and displays that associatiation with a balloon like appearance*/
class QgsAnnotationItem: QgsMapCanvasItem
{
%TypeHeaderCode
#include <qgsannotationitem.h>
%End
public:
enum MouseMoveAction
{
NoAction,
MoveMapPosition,
MoveFramePosition,
ResizeFrameUp,
ResizeFrameDown,
ResizeFrameLeft,
ResizeFrameRight,
ResizeFrameLeftUp,
ResizeFrameRightUp,
ResizeFrameLeftDown,
ResizeFrameRightDown
};
QgsAnnotationItem( QgsMapCanvas* mapCanvas );
virtual ~QgsAnnotationItem();
void updatePosition();
QRectF boundingRect() const;
virtual QSizeF minimumFrameSize() const;
/**Returns the mouse move behaviour for a given position
@param pos the position in scene coordinates*/
QgsAnnotationItem::MouseMoveAction moveActionForPosition( const QPointF& pos ) const;
/**Returns suitable cursor shape for mouse move action*/
Qt::CursorShape cursorShapeForAction( MouseMoveAction moveAction ) const;
//setters and getters
void setMapPositionFixed( bool fixed );
bool mapPositionFixed() const;
virtual void setMapPosition( const QgsPoint& pos );
QgsPoint mapPosition() const;
void setFrameSize( const QSizeF& size );
QSizeF frameSize() const;
void setOffsetFromReferencePoint( const QPointF& offset );
QPointF offsetFromReferencePoint() const;
/**Set symbol that is drawn on map position. Takes ownership*/
void setMarkerSymbol( QgsMarkerSymbolV2* symbol /Transfer/ );
const QgsMarkerSymbolV2* markerSymbol() const;
void setFrameBorderWidth( double w );
double frameBorderWidth() const;
void setFrameColor( const QColor& c );
QColor frameColor() const;
void setFrameBackgroundColor( const QColor& c );
QColor frameBackgroundColor() const;
virtual void writeXML( QDomDocument& doc ) const = 0;
virtual void readXML( const QDomDocument& doc, const QDomElement& itemElem ) = 0;
void _writeXML( QDomDocument& doc, QDomElement& itemElem ) const;
void _readXML( const QDomDocument& doc, const QDomElement& annotationElem );
protected:
void updateBoundingRect();
/**Check where to attach the balloon connection between frame and map point*/
void updateBalloon();
void drawFrame( QPainter* p );
void drawMarkerSymbol( QPainter* p );
void drawSelectionBoxes( QPainter* p );
/**Returns frame width in painter units*/
//double scaledFrameWidth( QPainter* p) const;
/**Gets the frame line (0 is the top line, 1 right, 2 bottom, 3 left)*/
QLineF segment( int index );
/**Returns a point on the line from startPoint to directionPoint that is a certain distance away from the starting point*/
QPointF pointOnLineWithDistance( const QPointF& startPoint, const QPointF& directionPoint, double distance ) const;
/**Returns the symbol size scaled in (mapcanvas) pixels. Used for the counding rect calculation*/
double scaledSymbolSize() const;
};
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