Interface for classes that arrange overlay objects of different layers on the map. More...

Inheritance diagram for QgsOverlayObjectPositionManager:

Public Member Functions
virtual	~QgsOverlayObjectPositionManager ()
virtual void	addLayer (QgsVectorLayer vl, QList< QgsVectorOverlay > &overlays)=0
	Adds a layer that may contain * overlays to the position manager.
virtual void	removeLayers ()=0
	Removes all the layers.
virtual void	findObjectPositions (const QgsRenderContext &context, QGis::UnitType unitType)=0
	Calculate positions for the overlay objects.

Detailed Description

Interface for classes that arrange overlay objects of different layers on the map.

Constructor & Destructor Documentation

virtual QgsOverlayObjectPositionManager::~QgsOverlayObjectPositionManager ( ) [inline, virtual]

virtual void QgsOverlayObjectPositionManager::addLayer	(	QgsVectorLayer *	vl,
		QList< QgsVectorOverlay * > &	overlays
	)		`[pure virtual]`

Adds a layer that may contain * overlays to the position manager.

The overlay objects contained in the overlays will then be considered in label placement

virtual void QgsOverlayObjectPositionManager::findObjectPositions	(	const QgsRenderContext &	context,
		QGis::UnitType	unitType
	)		`[pure virtual]`

Calculate positions for the overlay objects.

Parameters:

context	Context of rendering operation (Painter, scale factor)
unitType	meters, feet, degrees

virtual void QgsOverlayObjectPositionManager::removeLayers ( ) [pure virtual]

Removes all the layers.

The documentation for this class was generated from the following file: