Base class for storage of map layer elevation properties. More...

#include <qgsmaplayerelevationproperties.h>

Inheritance diagram for QgsMapLayerElevationProperties:

[legend]

Public Types
enum	Flag { FlagDontInvalidateCachedRendersWhenRangeChanges = 1 }
	Flags attached to the elevation property. More...

typedef QFlags< Flag >	Flags

enum class	Property : int { ZOffset , ExtrusionHeight , RasterPerBandLowerElevation , RasterPerBandUpperElevation }
	Data definable properties. More...

Signals
void	changed ()
	Emitted when any of the elevation properties have changed.

void	profileGenerationPropertyChanged ()
	Emitted when any of the elevation properties which relate solely to generation of elevation profiles have changed.

void	profileRenderingPropertyChanged ()
	Emitted when any of the elevation properties which relate solely to presentation of elevation results have changed.

void	zOffsetChanged ()
	Emitted when the z offset changes.

void	zScaleChanged ()
	Emitted when the z scale changes.

Public Member Functions
	QgsMapLayerElevationProperties (QObject *parent)
	Constructor for QgsMapLayerElevationProperties, with the specified parent object.

virtual QgsDoubleRange	calculateZRange (QgsMapLayer *layer) const
	Attempts to calculate the overall elevation or z range for the specified layer, using the settings defined by this elevation properties object.

virtual QgsMapLayerElevationProperties *	clone () const =0
	Creates a clone of the properties.

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the object's property collection, used for data defined overrides.

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the object's property collection, used for data defined overrides.

virtual QgsMapLayerElevationProperties::Flags	flags () const
	Returns flags associated to the elevation properties.

virtual bool	hasElevation () const
	Returns `true` if the layer has an elevation or z component.

virtual QString	htmlSummary () const
	Returns a HTML formatted summary of the properties.

virtual bool	isVisibleInZRange (const QgsDoubleRange &range, QgsMapLayer *layer=nullptr) const
	Returns `true` if the layer should be visible and rendered for the specified z range.

virtual bool	readXml (const QDomElement &element, const QgsReadWriteContext &context)=0
	Reads the elevation properties from a DOM element previously written by writeXml().

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the object's property collection, used for data defined overrides.

virtual void	setDefaultsFromLayer (QgsMapLayer *layer)
	Sets default properties based on sensible choices for the given map layer.

void	setZOffset (double offset)
	Sets the z offset, which is a fixed offset amount which will be added to z values from the layer.

void	setZScale (double scale)
	Sets the z scale, which is a scaling factor which will be applied to z values from the layer.

virtual bool	showByDefaultInElevationProfilePlots () const
	Returns `true` if the layer should be visible by default in newly created elevation profile plots.

virtual QList< double >	significantZValues (QgsMapLayer *layer) const
	Returns a list of significant elevation/z-values for the specified layer, using the settings defined by this elevation properties object.

virtual QDomElement	writeXml (QDomElement &element, QDomDocument &doc, const QgsReadWriteContext &context)=0
	Writes the properties to a DOM element, to be used later with readXml().

double	zOffset () const
	Returns the z offset, which is a fixed offset amount which should be added to z values from the layer.

double	zScale () const
	Returns the z scale, which is a scaling factor which should be applied to z values from the layer.

Static Public Member Functions
static QgsPropertiesDefinition	propertyDefinitions ()
	Returns the definitions for data defined properties available for use in elevation properties.

Protected Member Functions
void	copyCommonProperties (const QgsMapLayerElevationProperties *other)
	Copies common properties from another object.

void	readCommonProperties (const QDomElement &element, const QgsReadWriteContext &context)
	Reads common class properties from a DOM element previously written by writeXml().

void	writeCommonProperties (QDomElement &element, QDomDocument &doc, const QgsReadWriteContext &context)
	Writes common class properties to a DOM element, to be used later with readXml().

Protected Attributes
QgsPropertyCollection	mDataDefinedProperties
	Property collection for data defined elevation settings.

double	mZOffset = 0.0
	Z offset.

double	mZScale = 1.0
	Z scale.

Static Protected Attributes
static QgsPropertiesDefinition	sPropertyDefinitions
	Property definitions.

Detailed Description

Base class for storage of map layer elevation properties.

QgsMapLayerElevationProperties exposes user-configurable settings for controlling how an individual QgsMapLayer behaves with relation to z values or elevations.

Since: QGIS 3.18

Definition at line 44 of file qgsmaplayerelevationproperties.h.

Member Typedef Documentation

◆ Flags

typedef QFlags< Flag > QgsMapLayerElevationProperties::Flags

Definition at line 109 of file qgsmaplayerelevationproperties.h.

Member Enumeration Documentation

◆ Flag

enum QgsMapLayerElevationProperties::Flag

Flags attached to the elevation property.

Enumerator
FlagDontInvalidateCachedRendersWhenRangeChanges	Any cached rendering will not be invalidated when z range context is modified.

Definition at line 105 of file qgsmaplayerelevationproperties.h.

◆ Property

enum class QgsMapLayerElevationProperties::Property : int

strong

Data definable properties.

Since: QGIS 3.26

Enumerator
ZOffset
ExtrusionHeight	Z offset. Extrusion height
RasterPerBandLowerElevation	Lower elevation for each raster band (since QGIS 3.38)
RasterPerBandUpperElevation	Upper elevation for each raster band (since QGIS 3.38)

Definition at line 93 of file qgsmaplayerelevationproperties.h.

Constructor & Destructor Documentation

◆ QgsMapLayerElevationProperties()

QgsMapLayerElevationProperties::QgsMapLayerElevationProperties ( QObject * parent )

Constructor for QgsMapLayerElevationProperties, with the specified parent object.

Definition at line 24 of file qgsmaplayerelevationproperties.cpp.

Member Function Documentation

◆ calculateZRange()

QgsDoubleRange QgsMapLayerElevationProperties::calculateZRange ( QgsMapLayer * layer ) const

virtual

Attempts to calculate the overall elevation or z range for the specified layer, using the settings defined by this elevation properties object.

May return an infinite range if the extent could not be calculated.

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

Definition at line 76 of file qgsmaplayerelevationproperties.cpp.

◆ changed

void QgsMapLayerElevationProperties::changed ( )

signal

Emitted when any of the elevation properties have changed.

See renderingPropertyChanged() and profileGenerationPropertyChanged() for more fine-grained signals.

◆ clone()

virtual QgsMapLayerElevationProperties * QgsMapLayerElevationProperties::clone ( ) const

pure virtual

Creates a clone of the properties.

Since: QGIS 3.26

Implemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

◆ copyCommonProperties()

void QgsMapLayerElevationProperties::copyCommonProperties ( const QgsMapLayerElevationProperties * other )

protected

Copies common properties from another object.

Since: QGIS 3.26

Definition at line 64 of file qgsmaplayerelevationproperties.cpp.

◆ dataDefinedProperties() [1/2]

QgsPropertyCollection & QgsMapLayerElevationProperties::dataDefinedProperties ( )

inline

Returns a reference to the object's property collection, used for data defined overrides.

See also: setDataDefinedProperties()

Since: QGIS 3.26

Definition at line 248 of file qgsmaplayerelevationproperties.h.

◆ dataDefinedProperties() [2/2]

const QgsPropertyCollection & QgsMapLayerElevationProperties::dataDefinedProperties ( ) const

inline

Returns a reference to the object's property collection, used for data defined overrides.

See also: setDataDefinedProperties(); Property

Note: not available in Python bindings

Since: QGIS 3.26

Definition at line 257 of file qgsmaplayerelevationproperties.h.

◆ flags()

virtual QgsMapLayerElevationProperties::Flags QgsMapLayerElevationProperties::flags ( ) const

inlinevirtual

Returns flags associated to the elevation properties.

Reimplemented in QgsMeshLayerElevationProperties, and QgsRasterLayerElevationProperties.

Definition at line 166 of file qgsmaplayerelevationproperties.h.

◆ hasElevation()

bool QgsMapLayerElevationProperties::hasElevation ( ) const

virtual

Returns true if the layer has an elevation or z component.

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

Definition at line 29 of file qgsmaplayerelevationproperties.cpp.

◆ htmlSummary()

QString QgsMapLayerElevationProperties::htmlSummary ( ) const

virtual

Returns a HTML formatted summary of the properties.

Since: QGIS 3.26

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

Definition at line 39 of file qgsmaplayerelevationproperties.cpp.

◆ isVisibleInZRange()

bool QgsMapLayerElevationProperties::isVisibleInZRange	(	const QgsDoubleRange &	range,
		QgsMapLayer *	layer = `nullptr`
	)		const

virtual

Returns true if the layer should be visible and rendered for the specified z range.

Since QGIS 3.38 the layer argument can be used to specify the target layer.

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, and QgsVectorLayerElevationProperties.

Definition at line 71 of file qgsmaplayerelevationproperties.cpp.

◆ profileGenerationPropertyChanged

void QgsMapLayerElevationProperties::profileGenerationPropertyChanged ( )

signal

Emitted when any of the elevation properties which relate solely to generation of elevation profiles have changed.

See also: changed(); profileRenderingPropertyChanged()

Since: QGIS 3.26

◆ profileRenderingPropertyChanged

void QgsMapLayerElevationProperties::profileRenderingPropertyChanged ( )

signal

Emitted when any of the elevation properties which relate solely to presentation of elevation results have changed.

See also: changed(); profileGenerationPropertyChanged()

Since: QGIS 3.26

◆ propertyDefinitions()

QgsPropertiesDefinition QgsMapLayerElevationProperties::propertyDefinitions ( )

static

Returns the definitions for data defined properties available for use in elevation properties.

Since: QGIS 3.26

Definition at line 123 of file qgsmaplayerelevationproperties.cpp.

◆ readCommonProperties()

void QgsMapLayerElevationProperties::readCommonProperties	(	const QDomElement &	element,
		const QgsReadWriteContext &	context
	)

protected

Reads common class properties from a DOM element previously written by writeXml().

See also: writeCommonProperties()

Since: QGIS 3.26

Definition at line 54 of file qgsmaplayerelevationproperties.cpp.

◆ readXml()

virtual bool QgsMapLayerElevationProperties::readXml	(	const QDomElement &	element,
		const QgsReadWriteContext &	context
	)

pure virtual

Reads the elevation properties from a DOM element previously written by writeXml().

See also: writeXml()

Implemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

◆ setDataDefinedProperties()

void QgsMapLayerElevationProperties::setDataDefinedProperties ( const QgsPropertyCollection & collection )

Sets the object's property collection, used for data defined overrides.

Any existing properties will be discarded.

See also: dataDefinedProperties(); Property

Since: QGIS 3.26

Definition at line 113 of file qgsmaplayerelevationproperties.cpp.

◆ setDefaultsFromLayer()

void QgsMapLayerElevationProperties::setDefaultsFromLayer ( QgsMapLayer * layer )

virtual

Sets default properties based on sensible choices for the given map layer.

Since: QGIS 3.26

Reimplemented in QgsVectorLayerElevationProperties.

Definition at line 34 of file qgsmaplayerelevationproperties.cpp.

◆ setZOffset()

void QgsMapLayerElevationProperties::setZOffset ( double offset )

Sets the z offset, which is a fixed offset amount which will be added to z values from the layer.

Note: Any scaling specified via zScale() is applied before any offset value specified via zOffset()

See also: zOffset()

Definition at line 91 of file qgsmaplayerelevationproperties.cpp.

◆ setZScale()

void QgsMapLayerElevationProperties::setZScale ( double scale )

Sets the z scale, which is a scaling factor which will be applied to z values from the layer.

This can be used to correct or manually adjust for incorrect elevation values in a layer, such as conversion of elevation values in feet to meters.

Note: Any scaling specified via zScale() is applied before any offset value specified via zOffset()

See also: zScale()

Definition at line 102 of file qgsmaplayerelevationproperties.cpp.

◆ showByDefaultInElevationProfilePlots()

bool QgsMapLayerElevationProperties::showByDefaultInElevationProfilePlots ( ) const

virtual

Returns true if the layer should be visible by default in newly created elevation profile plots.

Subclasses should override this with logic which determines whether the layer is likely desirable to be initially checked in these plots.

Since: QGIS 3.26

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, and QgsVectorLayerElevationProperties.

Definition at line 86 of file qgsmaplayerelevationproperties.cpp.

◆ significantZValues()

QList< double > QgsMapLayerElevationProperties::significantZValues ( QgsMapLayer * layer ) const

virtual

Returns a list of significant elevation/z-values for the specified layer, using the settings defined by this elevation properties object.

These values will be highlighted in elevation related widgets for the layer.

Since: QGIS 3.38

Reimplemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, and QgsTiledSceneLayerElevationProperties.

Definition at line 81 of file qgsmaplayerelevationproperties.cpp.

◆ writeCommonProperties()

void QgsMapLayerElevationProperties::writeCommonProperties	(	QDomElement &	element,
		QDomDocument &	doc,
		const QgsReadWriteContext &	context
	)

protected

Writes common class properties to a DOM element, to be used later with readXml().

See also: readCommonProperties()

Since: QGIS 3.26

Definition at line 44 of file qgsmaplayerelevationproperties.cpp.

◆ writeXml()

virtual QDomElement QgsMapLayerElevationProperties::writeXml	(	QDomElement &	element,
		QDomDocument &	doc,
		const QgsReadWriteContext &	context
	)

pure virtual

Writes the properties to a DOM element, to be used later with readXml().

See also: readXml()

Implemented in QgsMeshLayerElevationProperties, QgsPointCloudLayerElevationProperties, QgsRasterLayerElevationProperties, QgsTiledSceneLayerElevationProperties, and QgsVectorLayerElevationProperties.

◆ zOffset()

double QgsMapLayerElevationProperties::zOffset ( ) const

inline

Returns the z offset, which is a fixed offset amount which should be added to z values from the layer.

Note: Any scaling specified via zScale() is applied before any offset value specified via zOffset()

See also: setZOffset()

Definition at line 205 of file qgsmaplayerelevationproperties.h.

◆ zOffsetChanged

void QgsMapLayerElevationProperties::zOffsetChanged ( )

signal

Emitted when the z offset changes.

Since: QGIS 3.26

◆ zScale()

double QgsMapLayerElevationProperties::zScale ( ) const

inline

Returns the z scale, which is a scaling factor which should be applied to z values from the layer.

This can be used to correct or manually adjust for incorrect elevation values in a layer, such as conversion of elevation values in feet to meters.

Note: Any scaling specified via zScale() is applied before any offset value specified via zOffset()

See also: setZScale()

Definition at line 228 of file qgsmaplayerelevationproperties.h.

◆ zScaleChanged

void QgsMapLayerElevationProperties::zScaleChanged ( )

signal

Emitted when the z scale changes.

Since: QGIS 3.26

Member Data Documentation

◆ mDataDefinedProperties

QgsPropertyCollection QgsMapLayerElevationProperties::mDataDefinedProperties

protected

Property collection for data defined elevation settings.

Definition at line 327 of file qgsmaplayerelevationproperties.h.

◆ mZOffset

double QgsMapLayerElevationProperties::mZOffset = 0.0

protected

Z offset.

Definition at line 324 of file qgsmaplayerelevationproperties.h.

◆ mZScale

double QgsMapLayerElevationProperties::mZScale = 1.0

protected

Z scale.

Definition at line 322 of file qgsmaplayerelevationproperties.h.

◆ sPropertyDefinitions

QgsPropertiesDefinition QgsMapLayerElevationProperties::sPropertyDefinitions

staticprotected

Property definitions.

Definition at line 330 of file qgsmaplayerelevationproperties.h.

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

/home/fischer/src/qgis-3.38/src/core/qgsmaplayerelevationproperties.h
/home/fischer/src/qgis-3.38/src/core/qgsmaplayerelevationproperties.cpp

Public Types

Signals

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Member Typedef Documentation

◆ Flags

Member Enumeration Documentation

◆ Flag

◆ Property

Constructor & Destructor Documentation

◆ QgsMapLayerElevationProperties()

Member Function Documentation

◆ calculateZRange()

◆ changed

◆ clone()

◆ copyCommonProperties()

◆ dataDefinedProperties() [1/2]

◆ dataDefinedProperties() [2/2]

◆ flags()

◆ hasElevation()

◆ htmlSummary()

◆ isVisibleInZRange()

◆ profileGenerationPropertyChanged

◆ profileRenderingPropertyChanged

◆ propertyDefinitions()

◆ readCommonProperties()

◆ readXml()

◆ setDataDefinedProperties()

◆ setDefaultsFromLayer()

◆ setZOffset()

◆ setZScale()

◆ showByDefaultInElevationProfilePlots()

◆ significantZValues()

◆ writeCommonProperties()

◆ writeXml()

◆ zOffset()

◆ zOffsetChanged

◆ zScale()

◆ zScaleChanged

Member Data Documentation

◆ mDataDefinedProperties

◆ mZOffset

◆ mZScale

◆ sPropertyDefinitions