Defines a set of tile matrices for multiple zoom levels. More...

#include <qgstiles.h>

Inheritance diagram for QgsTileMatrixSet:

Public Member Functions
	QgsTileMatrixSet ()

virtual	~QgsTileMatrixSet ()=default

void	addGoogleCrs84QuadTiles (int minimumZoom=0, int maximumZoom=14)
	Adds tile matrices corresponding to the standard web mercator/GoogleCRS84Quad setup.

void	addMatrix (const QgsTileMatrix &matrix)
	Adds a matrix to the set.

double	calculateTileScaleForMap (double actualMapScale, const QgsCoordinateReferenceSystem &mapCrs, const QgsRectangle &mapExtent, const QSize mapSize, const double mapDpi) const
	Calculates the correct scale to use for the tiles when rendered using the specified map properties.

QgsCoordinateReferenceSystem	crs () const
	Returns the coordinate reference system associated with the tiles.

void	dropMatricesOutsideZoomRange (int minimumZoom, int maximumZoom)
	Deletes any existing matrices which fall outside the zoom range specified by minimumZoom to maximumZoom, inclusive.

bool	isEmpty () const
	Returns `true` if the matrix set is empty.

int	maximumZoom () const
	Returns the maximum zoom level for tiles present in the set.

int	minimumZoom () const
	Returns the minimum zoom level for tiles present in the set.

virtual bool	readXml (const QDomElement &element, QgsReadWriteContext &context)
	Reads the set from an XML element.

QgsTileMatrix	rootMatrix () const
	Returns the root tile matrix (usually corresponding to zoom level 0).

double	scaleForRenderContext (const QgsRenderContext &context) const
	Calculates the correct scale to use for the tiles when rendered using the specified render context.

Qgis::ScaleToTileZoomLevelMethod	scaleToTileZoomMethod () const
	Returns the scale to tile zoom method.

double	scaleToZoom (double scale) const
	Calculates a fractional zoom level given a map scale denominator.

int	scaleToZoomLevel (double scale, bool clamp=true) const
	Finds the best fitting (integer) zoom level given a map scale denominator.

void	setRootMatrix (const QgsTileMatrix &matrix)
	Sets the root tile matrix (usually corresponding to zoom level 0).

void	setScaleToTileZoomMethod (Qgis::ScaleToTileZoomLevelMethod method)
	Sets the scale to tile zoom method.

Qgis::TileAvailability	tileAvailability (QgsTileXYZ id) const
	Returns the availability of the given tile in this matrix.

QgsTileMatrix	tileMatrix (int zoom) const
	Returns the tile matrix corresponding to the specified zoom.

QVector< QgsTileXYZ >	tilesInRange (QgsTileRange range, int zoomLevel) const
	Returns a list of tiles in the given tile range.

virtual QDomElement	writeXml (QDomDocument &document, const QgsReadWriteContext &context) const
	Writes the set to an XML element.

Protected Attributes
QgsTileMatrix	mRootMatrix

Qgis::ScaleToTileZoomLevelMethod	mScaleToTileZoomMethod = Qgis::ScaleToTileZoomLevelMethod::MapBox

std::function< Qgis::TileAvailability(QgsTileXYZ id) >	mTileAvailabilityFunction

QMap< int, QgsTileMatrix >	mTileMatrices

std::function< Qgis::TileAvailability(QgsTileXYZ id, QgsTileXYZ &replacement) >	mTileReplacementFunction

Detailed Description

Defines a set of tile matrices for multiple zoom levels.

Since: QGIS 3.22.6

Definition at line 251 of file qgstiles.h.

Constructor & Destructor Documentation

◆ QgsTileMatrixSet()

QgsTileMatrixSet::QgsTileMatrixSet ( )

Definition at line 132 of file qgstiles.cpp.

◆ ~QgsTileMatrixSet()

virtual QgsTileMatrixSet::~QgsTileMatrixSet ( )

virtualdefault

Member Function Documentation

◆ addGoogleCrs84QuadTiles()

void QgsTileMatrixSet::addGoogleCrs84QuadTiles	(	int	minimumZoom = `0`,
		int	maximumZoom = `14`
	)

Adds tile matrices corresponding to the standard web mercator/GoogleCRS84Quad setup.

Definition at line 143 of file qgstiles.cpp.

◆ addMatrix()

void QgsTileMatrixSet::addMatrix ( const QgsTileMatrix & matrix )

Adds a matrix to the set.

Any existing matrix with the same QgsTileMatrix::zoomLevel() will be replaced.

Definition at line 171 of file qgstiles.cpp.

◆ calculateTileScaleForMap()

double QgsTileMatrixSet::calculateTileScaleForMap	(	double	actualMapScale,
		const QgsCoordinateReferenceSystem &	mapCrs,
		const QgsRectangle &	mapExtent,
		const QSize	mapSize,
		const double	mapDpi
	)		const

Calculates the correct scale to use for the tiles when rendered using the specified map properties.

Since: QGIS 3.26

Definition at line 308 of file qgstiles.cpp.

◆ crs()

QgsCoordinateReferenceSystem QgsTileMatrixSet::crs ( ) const

Returns the coordinate reference system associated with the tiles.

In the case of a tile set containing mixed CRS at different zoom levels this method will return the crs of the minimum zoom tile matrix.

Definition at line 218 of file qgstiles.cpp.

◆ dropMatricesOutsideZoomRange()

void QgsTileMatrixSet::dropMatricesOutsideZoomRange	(	int	minimumZoom,
		int	maximumZoom
	)

Deletes any existing matrices which fall outside the zoom range specified by minimumZoom to maximumZoom, inclusive.

Definition at line 198 of file qgstiles.cpp.

◆ isEmpty()

bool QgsTileMatrixSet::isEmpty ( ) const

Returns true if the matrix set is empty.

Definition at line 138 of file qgstiles.cpp.

◆ maximumZoom()

int QgsTileMatrixSet::maximumZoom ( ) const

Returns the maximum zoom level for tiles present in the set.

See also: minimumZoom()

Definition at line 187 of file qgstiles.cpp.

◆ minimumZoom()

int QgsTileMatrixSet::minimumZoom ( ) const

Returns the minimum zoom level for tiles present in the set.

See also: maximumZoom()

Definition at line 176 of file qgstiles.cpp.

◆ readXml()

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

virtual

Reads the set from an XML element.

See also: writeXml()

Definition at line 342 of file qgstiles.cpp.

◆ rootMatrix()

QgsTileMatrix QgsTileMatrixSet::rootMatrix ( ) const

Returns the root tile matrix (usually corresponding to zoom level 0).

Since: QGIS 3.28

Definition at line 161 of file qgstiles.cpp.

◆ scaleForRenderContext()

double QgsTileMatrixSet::scaleForRenderContext ( const QgsRenderContext & context ) const

Calculates the correct scale to use for the tiles when rendered using the specified render context.

Since: QGIS 3.26

Definition at line 299 of file qgstiles.cpp.

◆ scaleToTileZoomMethod()

Qgis::ScaleToTileZoomLevelMethod QgsTileMatrixSet::scaleToTileZoomMethod ( ) const

inline

Returns the scale to tile zoom method.

See also: setScaleToTileZoomMethod()

Definition at line 389 of file qgstiles.h.

◆ scaleToZoom()

double QgsTileMatrixSet::scaleToZoom ( double scale ) const

Calculates a fractional zoom level given a map scale denominator.

The zoom level will be linearly interpolated between zoom levels present in the set.

Definition at line 226 of file qgstiles.cpp.

◆ scaleToZoomLevel()

int QgsTileMatrixSet::scaleToZoomLevel	(	double	scale,
		bool	clamp = `true`
	)		const

Finds the best fitting (integer) zoom level given a map scale denominator.

An optional clamp parameter can be set to false to disable clamping zoom level to the tile matrix set's minimum and maximum zoom level.

Values are constrained to the zoom levels between minimumZoom() and maximumZoom().

Definition at line 283 of file qgstiles.cpp.

◆ setRootMatrix()

void QgsTileMatrixSet::setRootMatrix ( const QgsTileMatrix & matrix )

Sets the root tile matrix (usually corresponding to zoom level 0).

Since: QGIS 3.28

Definition at line 166 of file qgstiles.cpp.

◆ setScaleToTileZoomMethod()

void QgsTileMatrixSet::setScaleToTileZoomMethod ( Qgis::ScaleToTileZoomLevelMethod method )

inline

Sets the scale to tile zoom method.

See also: scaleToTileZoomMethod()

Definition at line 396 of file qgstiles.h.

◆ tileAvailability()

Qgis::TileAvailability QgsTileMatrixSet::tileAvailability ( QgsTileXYZ id ) const

Returns the availability of the given tile in this matrix.

This method can be used to determine whether a particular tile actually exists within the matrix, or is not available (e.g. due to holes within the matrix).

This method returns Qgis::TileAvailability::Available by default, unless specific tile availability is known for the given id.

Since: QGIS 3.32

Definition at line 213 of file qgstiles.cpp.

◆ tileMatrix()

QgsTileMatrix QgsTileMatrixSet::tileMatrix ( int zoom ) const

Returns the tile matrix corresponding to the specified zoom.

Definition at line 156 of file qgstiles.cpp.

◆ tilesInRange()

QVector< QgsTileXYZ > QgsTileMatrixSet::tilesInRange	(	QgsTileRange	range,
		int	zoomLevel
	)		const

Returns a list of tiles in the given tile range.

Since: QGIS 3.32

Definition at line 428 of file qgstiles.cpp.

◆ writeXml()

QDomElement QgsTileMatrixSet::writeXml	(	QDomDocument &	document,
		const QgsReadWriteContext &	context
	)		const

virtual

Writes the set to an XML element.

Definition at line 391 of file qgstiles.cpp.

Member Data Documentation

◆ mRootMatrix

QgsTileMatrix QgsTileMatrixSet::mRootMatrix

protected

Definition at line 410 of file qgstiles.h.

◆ mScaleToTileZoomMethod

Qgis::ScaleToTileZoomLevelMethod QgsTileMatrixSet::mScaleToTileZoomMethod = Qgis::ScaleToTileZoomLevelMethod::MapBox

protected

Definition at line 412 of file qgstiles.h.

◆ mTileAvailabilityFunction

std::function< Qgis::TileAvailability( QgsTileXYZ id ) > QgsTileMatrixSet::mTileAvailabilityFunction

protected

Definition at line 406 of file qgstiles.h.

◆ mTileMatrices

QMap< int, QgsTileMatrix > QgsTileMatrixSet::mTileMatrices

protected

Definition at line 411 of file qgstiles.h.

◆ mTileReplacementFunction

std::function< Qgis::TileAvailability( QgsTileXYZ id, QgsTileXYZ &replacement ) > QgsTileMatrixSet::mTileReplacementFunction

protected

Definition at line 407 of file qgstiles.h.

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

/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/qgstiles.h
/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/qgstiles.cpp

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ QgsTileMatrixSet()

◆ ~QgsTileMatrixSet()

Member Function Documentation

◆ addGoogleCrs84QuadTiles()

◆ addMatrix()

◆ calculateTileScaleForMap()

◆ crs()

◆ dropMatricesOutsideZoomRange()

◆ isEmpty()

◆ maximumZoom()

◆ minimumZoom()

◆ readXml()

◆ rootMatrix()

◆ scaleForRenderContext()

◆ scaleToTileZoomMethod()

◆ scaleToZoom()

◆ scaleToZoomLevel()

◆ setRootMatrix()

◆ setScaleToTileZoomMethod()

◆ tileAvailability()

◆ tileMatrix()

◆ tilesInRange()

◆ writeXml()

Member Data Documentation

◆ mRootMatrix

◆ mScaleToTileZoomMethod

◆ mTileAvailabilityFunction

◆ mTileMatrices

◆ mTileReplacementFunction