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 ()
virtual bool	render () override
	Do the rendering (based on data stored in the class) More...
void	setGeometryCachePointer (QgsGeometryCache *cache)
	where to save the cached geometries More...
Public Member Functions inherited from QgsMapLayerRenderer
	QgsMapLayerRenderer (const QString &layerID)
virtual	~QgsMapLayerRenderer ()
QStringList	errors () const
	Return list of errors (problems) that happened during the rendering. More...
virtual QgsFeedback *	feedback () const
	Access to feedback object of the layer renderer (may be null) More...
QString	layerID () const
	Get access to the ID of the layer rendered by this class. More...

Protected Attributes
QStringList	mAttrNames
QgsGeometryCache *	mCache
QgsRenderContext &	mContext
QgsVectorLayerDiagramProvider *	mDiagramProvider
	used with new labeling engine (QgsLabelingEngineV2): provider for diagrams. More...
bool	mDiagrams
	used with new labeling engine (QgsPalLabeling): whether diagrams are enabled More...
bool	mDrawVertexMarkers
QPainter::CompositionMode	mFeatureBlendMode
QgsFields	mFields
QGis::GeometryType	mGeometryType
QgsVectorLayerRendererInterruptionChecker	mInterruptionChecker
bool	mLabeling
	used with old labeling engine (QgsPalLabeling): whether labeling is enabled More...
QgsVectorLayerLabelProvider *	mLabelProvider
	used with new labeling engine (QgsLabelingEngineV2): provider for labels. More...
QgsVectorLayer *	mLayer
	The rendered layer. More...
QgsFeatureRendererV2 *	mRendererV2
QgsFeatureIds	mSelectedFeatureIds
bool	mSimplifyGeometry
QgsVectorSimplifyMethod	mSimplifyMethod
QgsVectorLayerFeatureSource *	mSource
bool	mVertexMarkerOnlyForSelection
int	mVertexMarkerSize
int	mVertexMarkerStyle
Protected Attributes inherited from QgsMapLayerRenderer
QStringList	mErrors
QString	mLayerID

Detailed Description

Implementation of threaded rendering for vector layers.

Note

added in 2.4

not available in Python bindings

Definition at line 67 of file qgsvectorlayerrenderer.h.

Constructor & Destructor Documentation

QgsVectorLayerRenderer()

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

Definition at line 44 of file qgsvectorlayerrenderer.cpp.

~QgsVectorLayerRenderer()

QgsVectorLayerRenderer::~QgsVectorLayerRenderer

(

)

Definition at line 112 of file qgsvectorlayerrenderer.cpp.

Member Function Documentation

render()

bool QgsVectorLayerRenderer::render ( )

overridevirtual

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

Implements QgsMapLayerRenderer.

Definition at line 119 of file qgsvectorlayerrenderer.cpp.

setGeometryCachePointer()

void QgsVectorLayerRenderer::setGeometryCachePointer

(

QgsGeometryCache *

cache

)

where to save the cached geometries

Note

The way how geometries are cached is really suboptimal - this method may be removed in future releases

Definition at line 266 of file qgsvectorlayerrenderer.cpp.

Member Data Documentation

mAttrNames

QStringList QgsVectorLayerRenderer::mAttrNames

protected

Definition at line 125 of file qgsvectorlayerrenderer.h.

mCache

QgsGeometryCache* QgsVectorLayerRenderer::mCache

protected

Definition at line 117 of file qgsvectorlayerrenderer.h.

mContext

QgsRenderContext& QgsVectorLayerRenderer::mContext

protected

Definition at line 102 of file qgsvectorlayerrenderer.h.

mDiagramProvider

QgsVectorLayerDiagramProvider* QgsVectorLayerRenderer::mDiagramProvider

protected

used with new labeling engine (QgsLabelingEngineV2): provider for diagrams.

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

Definition at line 137 of file qgsvectorlayerrenderer.h.

mDiagrams

bool QgsVectorLayerRenderer::mDiagrams

protected

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

Definition at line 130 of file qgsvectorlayerrenderer.h.

mDrawVertexMarkers

bool QgsVectorLayerRenderer::mDrawVertexMarkers

protected

Definition at line 119 of file qgsvectorlayerrenderer.h.

mFeatureBlendMode

QPainter::CompositionMode QgsVectorLayerRenderer::mFeatureBlendMode

protected

Definition at line 139 of file qgsvectorlayerrenderer.h.

mFields

QgsFields QgsVectorLayerRenderer::mFields

protected

Definition at line 109 of file qgsvectorlayerrenderer.h.

mGeometryType

QGis::GeometryType QgsVectorLayerRenderer::mGeometryType

protected

Definition at line 123 of file qgsvectorlayerrenderer.h.

mInterruptionChecker

QgsVectorLayerRendererInterruptionChecker QgsVectorLayerRenderer::mInterruptionChecker

protected

Definition at line 104 of file qgsvectorlayerrenderer.h.

mLabeling

bool QgsVectorLayerRenderer::mLabeling

protected

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

Definition at line 128 of file qgsvectorlayerrenderer.h.

mLabelProvider

QgsVectorLayerLabelProvider* QgsVectorLayerRenderer::mLabelProvider

protected

used with new labeling engine (QgsLabelingEngineV2): provider for labels.

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

Definition at line 134 of file qgsvectorlayerrenderer.h.

mLayer

QgsVectorLayer* QgsVectorLayerRenderer::mLayer

protected

The rendered layer.

Definition at line 107 of file qgsvectorlayerrenderer.h.

mRendererV2

QgsFeatureRendererV2* QgsVectorLayerRenderer::mRendererV2

protected

Definition at line 115 of file qgsvectorlayerrenderer.h.

mSelectedFeatureIds

QgsFeatureIds QgsVectorLayerRenderer::mSelectedFeatureIds

protected

Definition at line 111 of file qgsvectorlayerrenderer.h.

mSimplifyGeometry

bool QgsVectorLayerRenderer::mSimplifyGeometry

protected

Definition at line 142 of file qgsvectorlayerrenderer.h.

mSimplifyMethod

QgsVectorSimplifyMethod QgsVectorLayerRenderer::mSimplifyMethod

protected

Definition at line 141 of file qgsvectorlayerrenderer.h.

mSource

QgsVectorLayerFeatureSource* QgsVectorLayerRenderer::mSource

protected

Definition at line 113 of file qgsvectorlayerrenderer.h.

mVertexMarkerOnlyForSelection

bool QgsVectorLayerRenderer::mVertexMarkerOnlyForSelection

protected

Definition at line 120 of file qgsvectorlayerrenderer.h.

mVertexMarkerSize

int QgsVectorLayerRenderer::mVertexMarkerSize

protected

Definition at line 121 of file qgsvectorlayerrenderer.h.

mVertexMarkerStyle

int QgsVectorLayerRenderer::mVertexMarkerStyle

protected

Definition at line 121 of file qgsvectorlayerrenderer.h.

---

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

• /tmp/buildd/qgis-2.18.21+99unstable/src/core/qgsvectorlayerrenderer.h
• /tmp/buildd/qgis-2.18.21+99unstable/src/core/qgsvectorlayerrenderer.cpp