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23 lines
967 B
Plaintext
23 lines
967 B
Plaintext
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/**Interface for classes that arrange overlay objects of different layers on the map
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* \note This class has been added in version 1.1
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*/
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class QgsOverlayObjectPositionManager
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{
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%TypeHeaderCode
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#include "qgsoverlayobjectpositionmanager.h"
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%End
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public:
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//virtual destructor needed for proper memory management
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virtual ~QgsOverlayObjectPositionManager();
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/**Adds a layer that may contain * overlays to the position manager. The overlay objects contained in the
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overlays will then be considered in label placement*/
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virtual void addLayer( QgsVectorLayer* vl, QList<QgsVectorOverlay*>& overlays ) = 0;
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/**Removes all the layers*/
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virtual void removeLayers() = 0;
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/**Calculate positions for the overlay objects
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@param context Context of rendering operation (Painter, scale factor)
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@param unitType meters, feet, degrees*/
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virtual void findObjectPositions( const QgsRenderContext& context, QGis::UnitType unitType ) = 0;
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};
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