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59 lines
1.6 KiB
Plaintext
59 lines
1.6 KiB
Plaintext
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class QgsMapCanvasItem : QGraphicsItem
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{
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%TypeHeaderCode
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#include <qgsmapcanvasitem.h>
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%End
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protected:
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//! protected constructor: cannot be constructed directly
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QgsMapCanvasItem(QgsMapCanvas* mapCanvas /TransferThis/);
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virtual ~QgsMapCanvasItem();
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//! function to be implemented by derived classes
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virtual void paint(QPainter * painter) = 0;
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//! paint function called by map canvas
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virtual void paint(QPainter * painter,
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const QStyleOptionGraphicsItem * option,
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QWidget * widget = 0);
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//! schedules map canvas for repaint
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void updateCanvas();
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/**Sets render context parameters
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@param p painter for rendering
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@param context out: configured context
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@return true in case of success
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@note added in version 1.5*/
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bool setRenderContextVariables( QPainter* p, QgsRenderContext& context ) const;
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public:
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//! called on changed extent or resize event to update position of the item
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virtual void updatePosition();
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//! default implementation for canvas items
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virtual QRectF boundingRect() const;
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//! sets current offset, to be called from QgsMapCanvas
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void setPanningOffset(const QPoint& point);
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//! returns canvas item rectangle
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QgsRectangle rect() const;
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//! sets canvas item rectangle
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void setRect(const QgsRectangle& r);
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//! transformation from screen coordinates to map coordinates
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QgsPoint toMapCoordinates(const QPoint& point);
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//! transformation from map coordinates to screen coordinates
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QPointF toCanvasCoordinates(const QgsPoint& point);
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};
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