QgsVectorLayerRenderer Class Reference

Implementation of threaded rendering for vector layers. More...

#include <qgsvectorlayerrenderer.h>

Inheritance diagram for QgsVectorLayerRenderer:

Public Member Functions
	QgsVectorLayerRenderer (QgsVectorLayer *layer, QgsRenderContext &context)
	~QgsVectorLayerRenderer () override
QgsFeedback *	feedback () const override
	Access to feedback object of the layer renderer (may be null) More...
bool	render () override
	Do the rendering (based on data stored in the class) More...
Public Member Functions inherited from QgsMapLayerRenderer
	QgsMapLayerRenderer (const QString &layerID)
virtual	~QgsMapLayerRenderer ()=default
QStringList	errors () const
	Returns list of errors (problems) that happened during the rendering. More...
QString	layerId () const
	Gets access to the ID of the layer rendered by this class. More...

Protected Attributes
QSet< QString >	mAttrNames
QgsRenderContext &	mContext
QgsVectorLayerDiagramProvider *	mDiagramProvider = nullptr
	used with new labeling engine (QgsLabelingEngine): provider for diagrams. More...
bool	mDiagrams
	used with new labeling engine (QgsPalLabeling): whether diagrams are enabled More...
bool	mDrawVertexMarkers
QPainter::CompositionMode	mFeatureBlendMode
QgsFields	mFields
QgsWkbTypes::GeometryType	mGeometryType
std::unique_ptr< QgsVectorLayerRendererInterruptionChecker >	mInterruptionChecker
bool	mLabeling
	used with old labeling engine (QgsPalLabeling): whether labeling is enabled More...
QgsVectorLayerLabelProvider *	mLabelProvider = nullptr
	used with new labeling engine (QgsLabelingEngine): provider for labels. More...
QgsVectorLayer *	mLayer = nullptr
	The rendered layer. More...
QgsFeatureRenderer *	mRenderer = nullptr
QgsFeatureIds	mSelectedFeatureIds
bool	mSimplifyGeometry
QgsVectorSimplifyMethod	mSimplifyMethod
QgsVectorLayerFeatureSource *	mSource = nullptr
bool	mVertexMarkerOnlyForSelection
double	mVertexMarkerSize = 2.0
int	mVertexMarkerStyle = 0
Protected Attributes inherited from QgsMapLayerRenderer
QStringList	mErrors
QString	mLayerID

Detailed Description

Implementation of threaded rendering for vector layers.

Note

not available in Python bindings

Since

QGIS 2.4

Definition at line 74 of file qgsvectorlayerrenderer.h.

Constructor & Destructor Documentation

QgsVectorLayerRenderer::QgsVectorLayerRenderer	(	QgsVectorLayer *	layer,
		QgsRenderContext &	context
	)

Definition at line 43 of file qgsvectorlayerrenderer.cpp.

QgsVectorLayerRenderer::~QgsVectorLayerRenderer ( )

override

Definition at line 104 of file qgsvectorlayerrenderer.cpp.

Member Function Documentation

QgsFeedback * QgsVectorLayerRenderer::feedback ( ) const

overridevirtual

Access to feedback object of the layer renderer (may be null)

Since

QGIS 3.0

Reimplemented from QgsMapLayerRenderer.

Definition at line 110 of file qgsvectorlayerrenderer.cpp.

bool QgsVectorLayerRenderer::render ( )

overridevirtual

Do the rendering (based on data stored in the class)

Implements QgsMapLayerRenderer.

Definition at line 115 of file qgsvectorlayerrenderer.cpp.

Member Data Documentation

QSet<QString> QgsVectorLayerRenderer::mAttrNames

protected

Definition at line 131 of file qgsvectorlayerrenderer.h.

QgsRenderContext& QgsVectorLayerRenderer::mContext

protected

Definition at line 109 of file qgsvectorlayerrenderer.h.

QgsVectorLayerDiagramProvider* QgsVectorLayerRenderer::mDiagramProvider = nullptr

protected

used with new labeling engine (QgsLabelingEngine): provider for diagrams.

may be null. no need to delete: if exists it is owned by labeling engine

Definition at line 148 of file qgsvectorlayerrenderer.h.

bool QgsVectorLayerRenderer::mDiagrams

protected

used with new labeling engine (QgsPalLabeling): whether diagrams are enabled

Definition at line 136 of file qgsvectorlayerrenderer.h.

bool QgsVectorLayerRenderer::mDrawVertexMarkers

protected

Definition at line 124 of file qgsvectorlayerrenderer.h.

QPainter::CompositionMode QgsVectorLayerRenderer::mFeatureBlendMode

protected

Definition at line 150 of file qgsvectorlayerrenderer.h.

QgsFields QgsVectorLayerRenderer::mFields

protected

Definition at line 116 of file qgsvectorlayerrenderer.h.

QgsWkbTypes::GeometryType QgsVectorLayerRenderer::mGeometryType

protected

Definition at line 129 of file qgsvectorlayerrenderer.h.

std::unique_ptr< QgsVectorLayerRendererInterruptionChecker > QgsVectorLayerRenderer::mInterruptionChecker

protected

Definition at line 111 of file qgsvectorlayerrenderer.h.

bool QgsVectorLayerRenderer::mLabeling

protected

used with old labeling engine (QgsPalLabeling): whether labeling is enabled

Definition at line 134 of file qgsvectorlayerrenderer.h.

QgsVectorLayerLabelProvider* QgsVectorLayerRenderer::mLabelProvider = nullptr

protected

used with new labeling engine (QgsLabelingEngine): provider for labels.

may be null. no need to delete: if exists it is owned by labeling engine

Definition at line 142 of file qgsvectorlayerrenderer.h.

QgsVectorLayer* QgsVectorLayerRenderer::mLayer = nullptr

protected

The rendered layer.

Definition at line 114 of file qgsvectorlayerrenderer.h.

QgsFeatureRenderer* QgsVectorLayerRenderer::mRenderer = nullptr

protected

Definition at line 122 of file qgsvectorlayerrenderer.h.

QgsFeatureIds QgsVectorLayerRenderer::mSelectedFeatureIds

protected

Definition at line 118 of file qgsvectorlayerrenderer.h.

bool QgsVectorLayerRenderer::mSimplifyGeometry

protected

Definition at line 153 of file qgsvectorlayerrenderer.h.

QgsVectorSimplifyMethod QgsVectorLayerRenderer::mSimplifyMethod

protected

Definition at line 152 of file qgsvectorlayerrenderer.h.

QgsVectorLayerFeatureSource* QgsVectorLayerRenderer::mSource = nullptr

protected

Definition at line 120 of file qgsvectorlayerrenderer.h.

bool QgsVectorLayerRenderer::mVertexMarkerOnlyForSelection

protected

Definition at line 125 of file qgsvectorlayerrenderer.h.

double QgsVectorLayerRenderer::mVertexMarkerSize = 2.0

protected

Definition at line 127 of file qgsvectorlayerrenderer.h.

int QgsVectorLayerRenderer::mVertexMarkerStyle = 0

protected

Definition at line 126 of file qgsvectorlayerrenderer.h.

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

• /build/qgis-3.4.15+24xenial/src/core/qgsvectorlayerrenderer.h
• /build/qgis-3.4.15+24xenial/src/core/qgsvectorlayerrenderer.cpp