Rendering context for the WMS renderer. More...

#include <qgswmsrendercontext.h>

Public Types
enum	Flag { UseScaleDenominator = 0x01, UseOpacity = 0x02, UseFilter = 0x04, UseSelection = 0x08, AddHighlightLayers = 0x10, UpdateExtent = 0x20, SetAccessControl = 0x40, AddQueryLayers = 0x80, UseWfsLayersOnly = 0x100, AddExternalLayers = 0x200, UseSrcWidthHeight = 0x400, UseTileBuffer = 0x800 }
	Available rendering options. More...

Public Member Functions
	QgsWmsRenderContext ()=default
	Default constructor for QgsWmsRenderContext. More...

	QgsWmsRenderContext (const QgsProject project, QgsServerInterface interface)
	Constructor for QgsWmsRenderContext. More...

qreal	dotsPerMm () const
	Returns default dots per mm according to the current configuration. More...

QStringList	flattenedQueryLayers () const
	Returns a list of query layer names where group names are replaced by the names of their layer components. More...

int	imageQuality () const
	Returns the image quality to use for rendering according to the current configuration. More...

bool	isValidGroup (const QString &name) const
	Returns true if name is a group. More...

bool	isValidLayer (const QString &nickname) const
	Returns true if the layer has to be rendered, false otherwise. More...

bool	isValidWidthHeight () const
	Returns true if width and height are valid according to the maximum values defined within the project, false otherwise. More...

QgsMapLayer *	layer (const QString &nickname) const
	Returns the layer corresponding to the nickname, or a nullptr if not found or if the layer do not need to be rendered. More...

QMap< QString, QList< QgsMapLayer * > >	layerGroups () const
	Returns a map having layer group names as keys and a list of layers as values. More...

QString	layerNickname (const QgsMapLayer &layer) const
	Returns the nickname (short name, id or name) of the layer according to the current configuration. More...

QList< QgsMapLayer * >	layers () const
	Returns a list of all layers read from the project. More...

QList< QgsMapLayer * >	layersToRender () const
	Returns a list of all layers to actually render according to the current configuration. More...

int	mapHeight () const
	Returns HEIGHT or SRCHEIGHT according to UseSrcWidthHeight flag. More...

QSize	mapSize (bool aspectRatio=true) const
	Returns the size (in pixels) of the map to render, according to width and height WMS parameters as well as the aspectRatio option. More...

double	mapTileBuffer (int mapWidth) const
	Returns the tile buffer in geographical units for the given map width in pixels. More...

int	mapWidth () const
	Returns WIDTH or SRCWIDTH according to UseSrcWidthHeight flag. More...

QgsWmsParameters	parameters () const
	Returns WMS parameters. More...

QgsWmsParametersLayer	parameters (const QgsMapLayer &layer) const
	Returns WMS parameters for a specific layer. More...

int	precision () const
	Returns the precision to use according to the current configuration. More...

const QgsProject *	project () const
	Returns the project. More...

double	scaleDenominator () const
	Returns the scale denominator to use for rendering according to the current configuration. More...

void	setFlag (Flag flag, bool on=true)
	Sets or unsets a rendering flag according to the on value. More...

void	setParameters (const QgsWmsParameters &parameters)
	Sets WMS parameters. More...

void	setScaleDenominator (double scaleDenominator)
	Sets a custom scale denominator. More...

const QgsServerSettings &	settings () const
	Returns settings of the server. More...

QDomElement	sld (const QgsMapLayer &layer) const
	Returns a SLD document for a specific layer. More...

QString	style (const QgsMapLayer &layer) const
	Returns a style's name for a specific layer. More...

bool	testFlag (Flag flag) const
	Returns the status of a rendering flag. More...

int	tileBuffer () const
	Returns the tile buffer value to use for rendering according to the current configuration. More...

bool	updateExtent () const
	Returns true if the extent has to be updated before the rendering, false otherwise. More...

Detailed Description

Rendering context for the WMS renderer.

Since: QGIS 3.8

Definition at line 34 of file qgswmsrendercontext.h.

Member Enumeration Documentation

◆ Flag

enum QgsWms::QgsWmsRenderContext::Flag

Available rendering options.

Enumerator
UseScaleDenominator
UseOpacity
UseFilter
UseSelection
AddHighlightLayers
UpdateExtent
SetAccessControl
AddQueryLayers
UseWfsLayersOnly
AddExternalLayers
UseSrcWidthHeight
UseTileBuffer

Definition at line 38 of file qgswmsrendercontext.h.

Constructor & Destructor Documentation

◆ QgsWmsRenderContext() [1/2]

QgsWms::QgsWmsRenderContext::QgsWmsRenderContext ( )

default

Default constructor for QgsWmsRenderContext.

◆ QgsWmsRenderContext() [2/2]

QgsWmsRenderContext::QgsWmsRenderContext	(	const QgsProject *	project,
		QgsServerInterface *	interface
	)

Constructor for QgsWmsRenderContext.

Parameters

project	The project to use for the rendering
interface	The server interface

Definition at line 27 of file qgswmsrendercontext.cpp.

Member Function Documentation

◆ dotsPerMm()

qreal QgsWmsRenderContext::dotsPerMm ( ) const

Returns default dots per mm according to the current configuration.

Definition at line 158 of file qgswmsrendercontext.cpp.

◆ flattenedQueryLayers()

QStringList QgsWmsRenderContext::flattenedQueryLayers ( ) const

Returns a list of query layer names where group names are replaced by the names of their layer components.

Since: QGIS 3.8

Definition at line 173 of file qgswmsrendercontext.cpp.

◆ imageQuality()

int QgsWmsRenderContext::imageQuality ( ) const

Returns the image quality to use for rendering according to the current configuration.

Definition at line 122 of file qgswmsrendercontext.cpp.

◆ isValidGroup()

bool QgsWmsRenderContext::isValidGroup ( const QString & name ) const

Returns true if name is a group.

Definition at line 290 of file qgswmsrendercontext.cpp.

◆ isValidLayer()

bool QgsWmsRenderContext::isValidLayer ( const QString & nickname ) const

Returns true if the layer has to be rendered, false otherwise.

Definition at line 285 of file qgswmsrendercontext.cpp.

◆ isValidWidthHeight()

bool QgsWmsRenderContext::isValidWidthHeight ( ) const

Returns true if width and height are valid according to the maximum values defined within the project, false otherwise.

Since: QGIS 3.8

Definition at line 578 of file qgswmsrendercontext.cpp.

◆ layer()

QgsMapLayer * QgsWmsRenderContext::layer ( const QString & nickname ) const

Returns the layer corresponding to the nickname, or a nullptr if not found or if the layer do not need to be rendered.

Definition at line 269 of file qgswmsrendercontext.cpp.

◆ layerGroups()

QMap< QString, QList< QgsMapLayer * > > QgsWmsRenderContext::layerGroups ( ) const

Returns a map having layer group names as keys and a list of layers as values.

Since: QGIS 3.8

Definition at line 547 of file qgswmsrendercontext.cpp.

◆ layerNickname()

QString QgsWmsRenderContext::layerNickname ( const QgsMapLayer & layer ) const

Returns the nickname (short name, id or name) of the layer according to the current configuration.

Definition at line 254 of file qgswmsrendercontext.cpp.

◆ layers()

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

Returns a list of all layers read from the project.

Definition at line 215 of file qgswmsrendercontext.cpp.

◆ layersToRender()

QList< QgsMapLayer * > QgsWmsRenderContext::layersToRender ( ) const

Returns a list of all layers to actually render according to the current configuration.

Definition at line 210 of file qgswmsrendercontext.cpp.

◆ mapHeight()

int QgsWmsRenderContext::mapHeight ( ) const

Returns HEIGHT or SRCHEIGHT according to UseSrcWidthHeight flag.

Definition at line 565 of file qgswmsrendercontext.cpp.

◆ mapSize()

QSize QgsWmsRenderContext::mapSize ( bool aspectRatio = true ) const

Returns the size (in pixels) of the map to render, according to width and height WMS parameters as well as the aspectRatio option.

Since: QGIS 3.8

Definition at line 672 of file qgswmsrendercontext.cpp.

◆ mapTileBuffer()

double QgsWmsRenderContext::mapTileBuffer ( int mapWidth ) const

Returns the tile buffer in geographical units for the given map width in pixels.

Since: QGIS 3.10

Definition at line 652 of file qgswmsrendercontext.cpp.

◆ mapWidth()

int QgsWmsRenderContext::mapWidth ( ) const

Returns WIDTH or SRCWIDTH according to UseSrcWidthHeight flag.

Definition at line 552 of file qgswmsrendercontext.cpp.

◆ parameters() [1/2]

QgsWmsParameters QgsWmsRenderContext::parameters ( ) const

Returns WMS parameters.

Definition at line 65 of file qgswmsrendercontext.cpp.

◆ parameters() [2/2]

QgsWmsParametersLayer QgsWmsRenderContext::parameters ( const QgsMapLayer & layer ) const

Returns WMS parameters for a specific layer.

An empty instance is returned if not available.

Definition at line 106 of file qgswmsrendercontext.cpp.

◆ precision()

int QgsWmsRenderContext::precision ( ) const

Returns the precision to use according to the current configuration.

Definition at line 146 of file qgswmsrendercontext.cpp.

◆ project()

const QgsProject * QgsWmsRenderContext::project ( ) const

Returns the project.

Definition at line 75 of file qgswmsrendercontext.cpp.

◆ scaleDenominator()

double QgsWmsRenderContext::scaleDenominator ( ) const

Returns the scale denominator to use for rendering according to the current configuration.

Definition at line 220 of file qgswmsrendercontext.cpp.

◆ setFlag()

void QgsWmsRenderContext::setFlag	(	Flag	flag,
		bool	on = `true`
	)

Sets or unsets a rendering flag according to the on value.

Definition at line 48 of file qgswmsrendercontext.cpp.

◆ setParameters()

void QgsWmsRenderContext::setParameters ( const QgsWmsParameters & parameters )

Sets WMS parameters.

Definition at line 34 of file qgswmsrendercontext.cpp.

◆ setScaleDenominator()

void QgsWmsRenderContext::setScaleDenominator ( double scaleDenominator )

Sets a custom scale denominator.

In this case, layers to render are updated according to their scale visibility.

Definition at line 236 of file qgswmsrendercontext.cpp.

◆ settings()

const QgsServerSettings & QgsWmsRenderContext::settings ( ) const

Returns settings of the server.

Definition at line 70 of file qgswmsrendercontext.cpp.

◆ sld()

QDomElement QgsWmsRenderContext::sld ( const QgsMapLayer & layer ) const

Returns a SLD document for a specific layer.

An empty document is returned if not available.

Definition at line 80 of file qgswmsrendercontext.cpp.

◆ style()

QString QgsWmsRenderContext::style ( const QgsMapLayer & layer ) const

Returns a style's name for a specific layer.

An empty string is returned if not available.

Definition at line 93 of file qgswmsrendercontext.cpp.

◆ testFlag()

bool QgsWmsRenderContext::testFlag ( Flag flag ) const

Returns the status of a rendering flag.

Parameters

flag	The flag to test

Returns: true if the rendering option is activated, false otherwise

Definition at line 60 of file qgswmsrendercontext.cpp.

◆ tileBuffer()

int QgsWmsRenderContext::tileBuffer ( ) const

Returns the tile buffer value to use for rendering according to the current configuration.

Since: QGIS 3.10

Definition at line 134 of file qgswmsrendercontext.cpp.

◆ updateExtent()

bool QgsWmsRenderContext::updateExtent ( ) const

Returns true if the extent has to be updated before the rendering, false otherwise.

Definition at line 242 of file qgswmsrendercontext.cpp.

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

/build/qgis-3.10.0+15buster/src/server/services/wms/qgswmsrendercontext.h
/build/qgis-3.10.0+15buster/src/server/services/wms/qgswmsrendercontext.cpp

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ Flag

Constructor & Destructor Documentation

◆ QgsWmsRenderContext() [1/2]

◆ QgsWmsRenderContext() [2/2]

Member Function Documentation

◆ dotsPerMm()

◆ flattenedQueryLayers()

◆ imageQuality()

◆ isValidGroup()

◆ isValidLayer()

◆ isValidWidthHeight()

◆ layer()

◆ layerGroups()

◆ layerNickname()

◆ layers()

◆ layersToRender()

◆ mapHeight()

◆ mapSize()

◆ mapTileBuffer()

◆ mapWidth()

◆ parameters() [1/2]

◆ parameters() [2/2]

◆ precision()

◆ project()

◆ scaleDenominator()

◆ setFlag()

◆ setParameters()

◆ setScaleDenominator()

◆ settings()

◆ sld()

◆ style()

◆ testFlag()

◆ tileBuffer()

◆ updateExtent()