Snapping utils instance that is connected to a canvas and updates the configuration (map settings + current layer) whenever that is changed in the canvas. More...

#include <qgsmapcanvassnappingutils.h>

Inheritance diagram for QgsMapCanvasSnappingUtils:

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Public Member Functions
	QgsMapCanvasSnappingUtils (QgsMapCanvas canvas, QObject parent=nullptr)

Public Member Functions inherited from QgsSnappingUtils
	QgsSnappingUtils (QObject *parent=nullptr)
	Constructor for QgsSnappingUtils. More...

	~QgsSnappingUtils () override

QgsSnappingConfig	config () const
	The snapping configuration controls the behavior of this object. More...

QgsVectorLayer *	currentLayer () const
	The current layer used if mode is SnapCurrentLayer. More...

QString	dump ()
	Get extra information about the instance. More...

IndexingStrategy	indexingStrategy () const
	Find out which strategy is used for indexing - by default hybrid indexing is used. More...

QList< QgsSnappingUtils::LayerConfig >	layers () const
	Query layers used for snapping. More...

QgsPointLocator *	locatorForLayer (QgsVectorLayer *vl)
	Get a point locator for the given layer. If such locator does not exist, it will be created. More...

QgsMapSettings	mapSettings () const

void	setCurrentLayer (QgsVectorLayer *layer)
	Set current layer so that if mode is SnapCurrentLayer we know which layer to use. More...

void	setIndexingStrategy (IndexingStrategy strategy)
	Set a strategy for indexing geometry data - determines how fast and memory consuming the data structures will be. More...

void	setMapSettings (const QgsMapSettings &settings)
	Assign current map settings to the utils - used for conversion between screen coords to map coords. More...

QgsPointLocator::Match	snapToCurrentLayer (QPoint point, QgsPointLocator::Types type, QgsPointLocator::MatchFilter *filter=nullptr)
	Snap to current layer. More...

QgsPointLocator::Match	snapToMap (QPoint point, QgsPointLocator::MatchFilter *filter=nullptr)
	Snap to map according to the current configuration. Optional filter allows discarding unwanted matches. More...

QgsPointLocator::Match	snapToMap (const QgsPointXY &pointMap, QgsPointLocator::MatchFilter *filter=nullptr)

Protected Member Functions
void	prepareIndexProgress (int index) override
	Called when finished indexing a layer. When index == count the indexing is complete. More...

void	prepareIndexStarting (int count) override
	Called when starting to index - can be overridden and e.g. progress dialog can be provided. More...

Protected Member Functions inherited from QgsSnappingUtils
void	clearAllLocators ()
	Deletes all existing locators (e.g. when destination CRS has changed and we need to reindex) More...

Additional Inherited Members
Public Types inherited from QgsSnappingUtils
enum	IndexingStrategy { IndexAlwaysFull, IndexNeverFull, IndexHybrid, IndexExtent }

Public Slots inherited from QgsSnappingUtils
void	setConfig (const QgsSnappingConfig &snappingConfig)
	The snapping configuration controls the behavior of this object. More...

void	toggleEnabled ()
	Toggles the state of snapping. More...

Signals inherited from QgsSnappingUtils
void	configChanged (const QgsSnappingConfig &snappingConfig)
	Emitted when the snapping settings object changes. More...

Properties inherited from QgsSnappingUtils
QgsSnappingConfig	config

Detailed Description

Snapping utils instance that is connected to a canvas and updates the configuration (map settings + current layer) whenever that is changed in the canvas.