QgsLabelPlacementSettings Class Reference

Contains general settings related to how labels are placed. More...

#include <qgslabelplacementsettings.h>

Public Member Functions
bool	allowDegradedPlacement () const
	Returns true if labels can be placed in inferior fallback positions if they cannot otherwise be placed.
Qgis::LabelOverlapHandling	overlapHandling () const
	Returns the technique used to handle overlapping labels.
Qgis::LabelPrioritization	prioritization () const
	Returns the label prioritization technique.
void	setAllowDegradedPlacement (bool allow)
	Sets whether labels can be placed in inferior fallback positions if they cannot otherwise be placed.
void	setOverlapHandling (Qgis::LabelOverlapHandling handling)
	Sets the technique used to handle overlapping labels.
void	setPrioritization (Qgis::LabelPrioritization prioritization)
	Sets the technique used to prioritize labels.
void	updateDataDefinedProperties (const QgsPropertyCollection &properties, QgsExpressionContext &context)
	Updates the placement settings to respect any data defined properties set within the specified properties collection.

Detailed Description

Contains general settings related to how labels are placed.

Since

QGIS 3.26

Definition at line 34 of file qgslabelplacementsettings.h.

Member Function Documentation

allowDegradedPlacement()

bool QgsLabelPlacementSettings::allowDegradedPlacement ( ) const

inline

Returns true if labels can be placed in inferior fallback positions if they cannot otherwise be placed.

For instance, this will permit a curved line label to fallback to a horizontal label at the end of the line if the label cannot otherwise be placed on the line in a curved manner.

See also

setAllowDegradedPlacement()

Definition at line 59 of file qgslabelplacementsettings.h.

overlapHandling()

Qgis::LabelOverlapHandling QgsLabelPlacementSettings::overlapHandling ( ) const

inline

Returns the technique used to handle overlapping labels.

See also

setOverlapHandling()

Definition at line 42 of file qgslabelplacementsettings.h.

prioritization()

Qgis::LabelPrioritization QgsLabelPlacementSettings::prioritization ( ) const

inline

Returns the label prioritization technique.

See also

setPrioritization()

Since

QGIS 3.38

Definition at line 79 of file qgslabelplacementsettings.h.

setAllowDegradedPlacement()

void QgsLabelPlacementSettings::setAllowDegradedPlacement ( bool  allow )

inline

Sets whether labels can be placed in inferior fallback positions if they cannot otherwise be placed.

For instance, this will permit a curved line label to fallback to a horizontal label at the end of the line if the label cannot otherwise be placed on the line in a curved manner.

See also

allowDegradedPlacement()

Definition at line 70 of file qgslabelplacementsettings.h.

setOverlapHandling()

void QgsLabelPlacementSettings::setOverlapHandling ( Qgis::LabelOverlapHandling  handling )

inline

Sets the technique used to handle overlapping labels.

See also

overlapHandling()

Definition at line 48 of file qgslabelplacementsettings.h.

setPrioritization()

void QgsLabelPlacementSettings::setPrioritization ( Qgis::LabelPrioritization  prioritization )

inline

Sets the technique used to prioritize labels.

See also

prioritization()

Since

QGIS 3.38

Definition at line 88 of file qgslabelplacementsettings.h.

updateDataDefinedProperties()

void QgsLabelPlacementSettings::updateDataDefinedProperties	(	const QgsPropertyCollection &	properties,
		QgsExpressionContext &	context
	)

Updates the placement settings to respect any data defined properties set within the specified properties collection.

Definition at line 22 of file qgslabelplacementsettings.cpp.

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

• /build/qgis-3.41.0+git20241225+af5edcb665c+99sid/src/core/labeling/qgslabelplacementsettings.h
• /build/qgis-3.41.0+git20241225+af5edcb665c+99sid/src/core/labeling/qgslabelplacementsettings.cpp