Contains settings relating to filtering the contents of QgsLayerTreeModel and views. More...

#include <qgslayertreefiltersettings.h>

Public Member Functions
	QgsLayerTreeFilterSettings (const QgsLayerTreeFilterSettings &other)
	Copy constructor.

	QgsLayerTreeFilterSettings (const QgsMapSettings &settings)
	Constructor for QgsLayerTreeFilterSettings, using the specified map settings.

	~QgsLayerTreeFilterSettings ()

void	addVisibleExtentForLayer (QgsMapLayer *layer, const QgsReferencedGeometry &polygon)
	Adds a visible extent polygon for a map layer.

QgsGeometry	combinedVisibleExtentForLayer (const QgsMapLayer *layer)
	Returns the combined visible extent for a layer.

QgsGeometry	filterPolygon () const
	Returns the optional filter polygon, used when testing for symbols to show in the legend.

Qgis::LayerTreeFilterFlags	flags () const
	Returns the filter flags.

QString	layerFilterExpression (const QString &layerId) const
	Returns the filter expression to use for the layer with the specified layerId, or an empty string if no expression is set for the layer.

QMap< QString, QString >	layerFilterExpressions () const
	Returns the map of layer IDs to legend filter expression.

QList< QgsMapLayer * >	layers () const
	Returns the layers which should be shown in the legend.

QgsMapSettings &	mapSettings ()
	Returns the map settings used to filter the legend content.

QgsLayerTreeFilterSettings &	operator= (const QgsLayerTreeFilterSettings &other)

void	setFilterPolygon (const QgsGeometry &polygon)
	Sets the optional filter polygon, used when testing for symbols to show in the legend.

void	setFlags (Qgis::LayerTreeFilterFlags flags)
	Sets the filter flags.

void	setLayerFilterExpressions (const QMap< QString, QString > &expressions)
	Sets the map of layer IDs to legend filter expression.

void	setLayerFilterExpressionsFromLayerTree (QgsLayerTree *tree)
	Sets layer filter expressions using a layer tree.

Detailed Description

Contains settings relating to filtering the contents of QgsLayerTreeModel and views.

Since: QGIS 3.32

Definition at line 39 of file qgslayertreefiltersettings.h.

Constructor & Destructor Documentation

◆ QgsLayerTreeFilterSettings() [1/2]

QgsLayerTreeFilterSettings::QgsLayerTreeFilterSettings ( const QgsMapSettings & settings )

explicit

Constructor for QgsLayerTreeFilterSettings, using the specified map settings.

Definition at line 25 of file qgslayertreefiltersettings.cpp.

◆ ~QgsLayerTreeFilterSettings()

QgsLayerTreeFilterSettings::~QgsLayerTreeFilterSettings ( )

default

◆ QgsLayerTreeFilterSettings() [2/2]

QgsLayerTreeFilterSettings::QgsLayerTreeFilterSettings ( const QgsLayerTreeFilterSettings & other )

Copy constructor.

Definition at line 33 of file qgslayertreefiltersettings.cpp.

Member Function Documentation

◆ addVisibleExtentForLayer()

void QgsLayerTreeFilterSettings::addVisibleExtentForLayer	(	QgsMapLayer *	layer,
		const QgsReferencedGeometry &	polygon
	)

Adds a visible extent polygon for a map layer.

If layer is already included in the layers contained within mapSettings() (or previously added by calling this method) then this polygon extent will be unioned with the existing extent.

The layer will be appended to the list of layers to use during the legend hit test. (See layers()).

Definition at line 111 of file qgslayertreefiltersettings.cpp.

◆ combinedVisibleExtentForLayer()

QgsGeometry QgsLayerTreeFilterSettings::combinedVisibleExtentForLayer ( const QgsMapLayer * layer )

Returns the combined visible extent for a layer.

The combined visible extent includes:

the mapSettings() extent (respecting filterPolygon() if set) IF the layer is contained in mapSettings()
all additional extents added by calls to addVisibleExtentForLayer()

The returned geometry will always be in the layer's CRS.

Definition at line 128 of file qgslayertreefiltersettings.cpp.

◆ filterPolygon()

QgsGeometry QgsLayerTreeFilterSettings::filterPolygon ( ) const

Returns the optional filter polygon, used when testing for symbols to show in the legend.

The CRS of the polygon will match the destination CRS of mapSettings().

If not set then the filter visibility extent will use the extent of mapSettings().

See also: setFilterPolygon()

Definition at line 91 of file qgslayertreefiltersettings.cpp.

◆ flags()

Qgis::LayerTreeFilterFlags QgsLayerTreeFilterSettings::flags ( ) const

Returns the filter flags.

See also: setFlags()

Definition at line 101 of file qgslayertreefiltersettings.cpp.

◆ layerFilterExpression()

QString QgsLayerTreeFilterSettings::layerFilterExpression ( const QString & layerId ) const

Returns the filter expression to use for the layer with the specified layerId, or an empty string if no expression is set for the layer.

See also: layerFilterExpressions(); setLayerFilterExpressions()

Definition at line 86 of file qgslayertreefiltersettings.cpp.

◆ layerFilterExpressions()

QMap< QString, QString > QgsLayerTreeFilterSettings::layerFilterExpressions ( ) const

Returns the map of layer IDs to legend filter expression.

See also: layerFilterExpression(); setLayerFilterExpressions()

Definition at line 60 of file qgslayertreefiltersettings.cpp.

◆ layers()

QList< QgsMapLayer * > QgsLayerTreeFilterSettings::layers ( ) const

Returns the layers which should be shown in the legend.

This includes all layers from the mapSettings() and any additional layers added by calls to addVisibleExtentForLayer().

See also: addVisibleExtentForLayer()

Definition at line 165 of file qgslayertreefiltersettings.cpp.

◆ mapSettings()

QgsMapSettings & QgsLayerTreeFilterSettings::mapSettings ( )

Returns the map settings used to filter the legend content.

Definition at line 55 of file qgslayertreefiltersettings.cpp.

◆ operator=()

QgsLayerTreeFilterSettings & QgsLayerTreeFilterSettings::operator= ( const QgsLayerTreeFilterSettings & other )

Definition at line 44 of file qgslayertreefiltersettings.cpp.

◆ setFilterPolygon()

void QgsLayerTreeFilterSettings::setFilterPolygon ( const QgsGeometry & polygon )

Sets the optional filter polygon, used when testing for symbols to show in the legend.

The CRS of the polygon must match the destination CRS of mapSettings().

If not set then the filter visibility extent will use the extent of mapSettings().

See also: filterPolygon()

Definition at line 96 of file qgslayertreefiltersettings.cpp.

◆ setFlags()

void QgsLayerTreeFilterSettings::setFlags ( Qgis::LayerTreeFilterFlags flags )

Sets the filter flags.

See also: flags()

Definition at line 106 of file qgslayertreefiltersettings.cpp.

◆ setLayerFilterExpressions()

void QgsLayerTreeFilterSettings::setLayerFilterExpressions ( const QMap< QString, QString > & expressions )

Sets the map of layer IDs to legend filter expression.

See also: layerFilterExpressions()

Definition at line 65 of file qgslayertreefiltersettings.cpp.

◆ setLayerFilterExpressionsFromLayerTree()

void QgsLayerTreeFilterSettings::setLayerFilterExpressionsFromLayerTree ( QgsLayerTree * tree )

Sets layer filter expressions using a layer tree.

Definition at line 70 of file qgslayertreefiltersettings.cpp.

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

/home/fischer/src/qgis-3.38/src/core/layertree/qgslayertreefiltersettings.h
/home/fischer/src/qgis-3.38/src/core/layertree/qgslayertreefiltersettings.cpp

Public Member Functions