QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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Public Member Functions | Static Public Member Functions | List of all members
Qgs25DRenderer Class Reference

A vector renderer which represents 3D features in an isometric view. More...

#include <qgs25drenderer.h>

Inheritance diagram for Qgs25DRenderer:
Inheritance graph
[legend]

Public Member Functions

 Qgs25DRenderer ()
 
bool accept (QgsStyleEntityVisitorInterface *visitor) const override
 Accepts the specified symbology visitor, causing it to visit all symbols associated with the renderer.
 
QgsFeatureRendererclone () const override
 Create a deep copy of this renderer.
 
Qgis::FeatureRendererFlags flags () const override
 Returns flags associated with the renderer.
 
QColor roofColor () const
 Gets the roof color.
 
QDomElement save (QDomDocument &doc, const QgsReadWriteContext &context) override
 Stores renderer properties to an XML element.
 
void setRoofColor (const QColor &roofColor) const
 Set the roof color.
 
void setShadowColor (const QColor &shadowColor) const
 Set the shadow's color.
 
void setShadowEnabled (bool value) const
 Enable or disable the shadow.
 
void setShadowSpread (double shadowSpread) const
 Set the shadow's spread distance in map units.
 
void setWallColor (const QColor &wallColor) const
 Set the wall color.
 
void setWallShadingEnabled (bool enabled) const
 Set wall shading enabled.
 
QColor shadowColor () const
 Gets the shadow's color.
 
bool shadowEnabled () const
 Is the shadow enabled.
 
double shadowSpread () const
 Gets the shadow's spread distance in map units.
 
void startRender (QgsRenderContext &context, const QgsFields &fields) override
 Must be called when a new render cycle is started.
 
void stopRender (QgsRenderContext &context) override
 Must be called when a render cycle has finished, to allow the renderer to clean up.
 
QgsSymbolsymbolForFeature (const QgsFeature &feature, QgsRenderContext &context) const override
 To be overridden.
 
QgsSymbolList symbols (QgsRenderContext &context) const override
 Returns list of symbols used by the renderer.
 
QSet< QString > usedAttributes (const QgsRenderContext &context) const override
 Returns a list of attributes required by this renderer.
 
QColor wallColor () const
 Gets the wall color.
 
bool wallShadingEnabled () const
 Gets wall shading enabled.
 
- Public Member Functions inherited from QgsFeatureRenderer
virtual ~QgsFeatureRenderer ()
 
virtual bool canSkipRender ()
 Returns true if the renderer can be entirely skipped, i.e.
 
virtual QgsFeatureRenderer::Capabilities capabilities ()
 Returns details about internals of this renderer.
 
virtual void checkLegendSymbolItem (const QString &key, bool state=true)
 Sets whether the legend symbology item with the specified ley should be checked.
 
void copyRendererData (QgsFeatureRenderer *destRenderer) const
 Clones generic renderer data to another renderer.
 
virtual QList< QgsLayerTreeModelLegendNode * > createLegendNodes (QgsLayerTreeLayer *nodeLayer) const
 Returns a list of legend nodes to be used for the legend for the renderer.
 
QgsPropertyCollectiondataDefinedProperties ()
 Returns a reference to the renderer's property collection, used for data defined overrides.
 
const QgsPropertyCollectiondataDefinedProperties () const
 Returns a reference to the renderer's property collection, used for data defined overrides.
 
virtual QString dump () const
 Returns debug information about this renderer.
 
virtual const QgsFeatureRendererembeddedRenderer () const
 Returns the current embedded renderer (subrenderer) for this feature renderer.
 
virtual QString filter (const QgsFields &fields=QgsFields())
 If a renderer does not require all the features this method may be overridden and return an expression used as where clause.
 
virtual bool filterNeedsGeometry () const
 Returns true if this renderer requires the geometry to apply the filter.
 
bool forceRasterRender () const
 Returns whether the renderer must render as a raster.
 
virtual QString legendClassificationAttribute () const
 If supported by the renderer, return classification attribute for the use in legend.
 
QSet< QString > legendKeys () const
 Returns the set of all legend keys used by the renderer.
 
virtual QSet< QString > legendKeysForFeature (const QgsFeature &feature, QgsRenderContext &context) const
 Returns legend keys matching a specified feature.
 
virtual QString legendKeyToExpression (const QString &key, QgsVectorLayer *layer, bool &ok) const
 Attempts to convert the specified legend rule key to a QGIS expression matching the features displayed using that key.
 
virtual bool legendSymbolItemChecked (const QString &key)
 Returns true if the legend symbology item with the specified key is checked.
 
virtual QgsLegendSymbolList legendSymbolItems () const
 Returns a list of symbology items for the legend.
 
virtual bool legendSymbolItemsCheckable () const
 Returns true if symbology items in legend are checkable.
 
virtual void modifyRequestExtent (QgsRectangle &extent, QgsRenderContext &context)
 Allows for a renderer to modify the extent of a feature request prior to rendering.
 
QgsFeatureRequest::OrderBy orderBy () const
 Gets the order in which features shall be processed by this renderer.
 
bool orderByEnabled () const
 Returns whether custom ordering will be applied before features are processed by this renderer.
 
virtual QgsSymboloriginalSymbolForFeature (const QgsFeature &feature, QgsRenderContext &context) const
 Returns symbol for feature.
 
virtual QgsSymbolList originalSymbolsForFeature (const QgsFeature &feature, QgsRenderContext &context) const
 Equivalent of originalSymbolsForFeature() call extended to support renderers that may use more symbols per feature - similar to symbolsForFeature()
 
QgsPaintEffectpaintEffect () const
 Returns the current paint effect for the renderer.
 
double referenceScale () const
 Returns the symbology reference scale.
 
virtual bool renderFeature (const QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false)
 Render a feature using this renderer in the given context.
 
void setDataDefinedProperties (const QgsPropertyCollection &collection)
 Sets the renderer's property collection, used for data defined overrides.
 
void setDataDefinedProperty (Property key, const QgsProperty &property)
 Sets a data defined property for the renderer.
 
virtual void setEmbeddedRenderer (QgsFeatureRenderer *subRenderer)
 Sets an embedded renderer (subrenderer) for this feature renderer.
 
void setForceRasterRender (bool forceRaster)
 Sets whether the renderer should be rendered to a raster destination.
 
virtual void setLegendSymbolItem (const QString &key, QgsSymbol *symbol)
 Sets the symbol to be used for a legend symbol item.
 
void setOrderBy (const QgsFeatureRequest::OrderBy &orderBy)
 Define the order in which features shall be processed by this renderer.
 
void setOrderByEnabled (bool enabled)
 Sets whether custom ordering should be applied before features are processed by this renderer.
 
void setPaintEffect (QgsPaintEffect *effect)
 Sets the current paint effect for the renderer.
 
void setReferenceScale (double scale)
 Sets the symbology reference scale.
 
void setUsingSymbolLevels (bool usingSymbolLevels)
 
void setVertexMarkerAppearance (Qgis::VertexMarkerType type, double size)
 Sets type and size of editing vertex markers for subsequent rendering.
 
virtual QgsSymbolList symbolsForFeature (const QgsFeature &feature, QgsRenderContext &context) const
 Returns list of symbols used for rendering the feature.
 
virtual void toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props=QVariantMap()) const
 used from subclasses to create SLD Rule elements following SLD v1.1 specs
 
QString type () const
 
virtual bool usesEmbeddedSymbols () const
 Returns true if the renderer uses embedded symbols for features.
 
bool usingSymbolLevels () const
 
virtual bool willRenderFeature (const QgsFeature &feature, QgsRenderContext &context) const
 Returns whether the renderer will render a feature or not.
 
virtual QDomElement writeSld (QDomDocument &doc, const QString &styleName, const QVariantMap &props=QVariantMap()) const
 create the SLD UserStyle element following the SLD v1.1 specs with the given name
 

Static Public Member Functions

static Qgs25DRendererconvertFromRenderer (QgsFeatureRenderer *renderer)
 Try to convert from an existing renderer.
 
static QgsFeatureRenderercreate (QDomElement &element, const QgsReadWriteContext &context)
 Create a new 2.5D renderer from XML.
 
- Static Public Member Functions inherited from QgsFeatureRenderer
static QgsFeatureRendererdefaultRenderer (Qgis::GeometryType geomType)
 Returns a new renderer - used by default in vector layers.
 
static QgsFeatureRendererload (QDomElement &symbologyElem, const QgsReadWriteContext &context)
 create a renderer from XML element
 
static QgsFeatureRendererloadSld (const QDomNode &node, Qgis::GeometryType geomType, QString &errorMessage)
 Create a new renderer according to the information contained in the UserStyle element of a SLD style document.
 
static const QgsPropertiesDefinitionpropertyDefinitions ()
 Returns the symbol property definitions.
 

Additional Inherited Members

- Public Types inherited from QgsFeatureRenderer
typedef QFlags< CapabilityCapabilities
 
enum  Capability { SymbolLevels = 1 , MoreSymbolsPerFeature = 1 << 2 , Filter = 1 << 3 , ScaleDependent = 1 << 4 }
 Used to specify details about a renderer. More...
 
enum class  Property : int { HeatmapRadius , HeatmapMaximum }
 Data definable properties for renderers. More...
 
- Protected Member Functions inherited from QgsFeatureRenderer
 QgsFeatureRenderer (const QString &type)
 
void renderFeatureWithSymbol (const QgsFeature &feature, QgsSymbol *symbol, QgsRenderContext &context, int layer, bool selected, bool drawVertexMarker)
 Render the feature with the symbol using context.
 
void renderVertexMarker (QPointF pt, QgsRenderContext &context)
 render editing vertex marker at specified point
 
void renderVertexMarkerPolygon (QPolygonF &pts, QList< QPolygonF > *rings, QgsRenderContext &context)
 render editing vertex marker for a polygon
 
void renderVertexMarkerPolyline (QPolygonF &pts, QgsRenderContext &context)
 render editing vertex marker for a polyline
 
void saveRendererData (QDomDocument &doc, QDomElement &element, const QgsReadWriteContext &context)
 Saves generic renderer data into the specified element.
 
- Static Protected Member Functions inherited from QgsFeatureRenderer
static QPointF _getPoint (QgsRenderContext &context, const QgsPoint &point)
 Creates a point in screen coordinates from a wkb string in map coordinates.
 
static void convertSymbolRotation (QgsSymbol *symbol, const QString &field)
 
static void convertSymbolSizeScale (QgsSymbol *symbol, Qgis::ScaleMethod method, const QString &field)
 
- Protected Attributes inherited from QgsFeatureRenderer
double mCurrentVertexMarkerSize = 2
 The current size of editing marker.
 
Qgis::VertexMarkerType mCurrentVertexMarkerType = Qgis::VertexMarkerType::Cross
 The current type of editing marker.
 
bool mForceRaster = false
 
QgsFeatureRequest::OrderBy mOrderBy
 
bool mOrderByEnabled = false
 
QgsPaintEffectmPaintEffect = nullptr
 
double mReferenceScale = -1.0
 
QString mType
 
bool mUsingSymbolLevels = false
 

Detailed Description

A vector renderer which represents 3D features in an isometric view.

Definition at line 30 of file qgs25drenderer.h.

Constructor & Destructor Documentation

◆ Qgs25DRenderer()

Qgs25DRenderer::Qgs25DRenderer ( )

Definition at line 65 of file qgs25drenderer.cpp.

Member Function Documentation

◆ accept()

bool Qgs25DRenderer::accept ( QgsStyleEntityVisitorInterface visitor) const
overridevirtual

Accepts the specified symbology visitor, causing it to visit all symbols associated with the renderer.

Returns true if the visitor should continue visiting other objects, or false if visiting should be canceled.

Since
QGIS 3.10

Reimplemented from QgsFeatureRenderer.

Definition at line 194 of file qgs25drenderer.cpp.

◆ clone()

QgsFeatureRenderer * Qgs25DRenderer::clone ( ) const
overridevirtual

Create a deep copy of this renderer.

Should be implemented by all subclasses and generate a proper subclass.

Returns
A copy of this renderer

Implements QgsFeatureRenderer.

Definition at line 172 of file qgs25drenderer.cpp.

◆ convertFromRenderer()

Qgs25DRenderer * Qgs25DRenderer::convertFromRenderer ( QgsFeatureRenderer renderer)
static

Try to convert from an existing renderer.

If it is not of the same type we assume that the internals are not compatible and create a new default 2.5D renderer.

Definition at line 282 of file qgs25drenderer.cpp.

◆ create()

QgsFeatureRenderer * Qgs25DRenderer::create ( QDomElement &  element,
const QgsReadWriteContext context 
)
static

Create a new 2.5D renderer from XML.

Parameters
elementXML information
contextreading context

Definition at line 140 of file qgs25drenderer.cpp.

◆ flags()

Qgis::FeatureRendererFlags Qgs25DRenderer::flags ( ) const
overridevirtual

Returns flags associated with the renderer.

Since
QGIS 3.40

Reimplemented from QgsFeatureRenderer.

Definition at line 131 of file qgs25drenderer.cpp.

◆ roofColor()

QColor Qgs25DRenderer::roofColor ( ) const

Gets the roof color.

Definition at line 271 of file qgs25drenderer.cpp.

◆ save()

QDomElement Qgs25DRenderer::save ( QDomDocument &  doc,
const QgsReadWriteContext context 
)
overridevirtual

Stores renderer properties to an XML element.

Subclasses which override this method should call saveRendererData() as part of their implementation in order to store all common base class properties in the returned DOM element.

Reimplemented from QgsFeatureRenderer.

Definition at line 116 of file qgs25drenderer.cpp.

◆ setRoofColor()

void Qgs25DRenderer::setRoofColor ( const QColor &  roofColor) const

Set the roof color.

Definition at line 276 of file qgs25drenderer.cpp.

◆ setShadowColor()

void Qgs25DRenderer::setShadowColor ( const QColor &  shadowColor) const

Set the shadow's color.

Definition at line 235 of file qgs25drenderer.cpp.

◆ setShadowEnabled()

void Qgs25DRenderer::setShadowEnabled ( bool  value) const

Enable or disable the shadow.

Definition at line 225 of file qgs25drenderer.cpp.

◆ setShadowSpread()

void Qgs25DRenderer::setShadowSpread ( double  shadowSpread) const

Set the shadow's spread distance in map units.

Definition at line 245 of file qgs25drenderer.cpp.

◆ setWallColor()

void Qgs25DRenderer::setWallColor ( const QColor &  wallColor) const

Set the wall color.

Definition at line 255 of file qgs25drenderer.cpp.

◆ setWallShadingEnabled()

void Qgs25DRenderer::setWallShadingEnabled ( bool  enabled) const

Set wall shading enabled.

Definition at line 261 of file qgs25drenderer.cpp.

◆ shadowColor()

QColor Qgs25DRenderer::shadowColor ( ) const

Gets the shadow's color.

Definition at line 230 of file qgs25drenderer.cpp.

◆ shadowEnabled()

bool Qgs25DRenderer::shadowEnabled ( ) const

Is the shadow enabled.

Definition at line 220 of file qgs25drenderer.cpp.

◆ shadowSpread()

double Qgs25DRenderer::shadowSpread ( ) const

Gets the shadow's spread distance in map units.

Definition at line 240 of file qgs25drenderer.cpp.

◆ startRender()

void Qgs25DRenderer::startRender ( QgsRenderContext context,
const QgsFields fields 
)
overridevirtual

Must be called when a new render cycle is started.

A call to startRender() must always be followed by a corresponding call to stopRender() after all features have been rendered.

Parameters
contextAdditional information passed to the renderer about the job which will be rendered
fieldsThe fields available for rendering
See also
stopRender()
Warning
This method is not thread safe. Before calling startRender() in a non-main thread, the renderer should instead be cloned and startRender()/stopRender() called on the clone.

Reimplemented from QgsFeatureRenderer.

Definition at line 153 of file qgs25drenderer.cpp.

◆ stopRender()

void Qgs25DRenderer::stopRender ( QgsRenderContext context)
overridevirtual

Must be called when a render cycle has finished, to allow the renderer to clean up.

Calls to stopRender() must always be preceded by a call to startRender().

Warning
This method is not thread safe. Before calling startRender() in a non-main thread, the renderer should instead be cloned and startRender()/stopRender() called on the clone.
See also
startRender()

Reimplemented from QgsFeatureRenderer.

Definition at line 160 of file qgs25drenderer.cpp.

◆ symbolForFeature()

QgsSymbol * Qgs25DRenderer::symbolForFeature ( const QgsFeature feature,
QgsRenderContext context 
) const
overridevirtual

To be overridden.

Must be called between startRender() and stopRender() calls.

Parameters
featurefeature
contextrender context
Returns
returns pointer to symbol or 0 if symbol was not found

Implements QgsFeatureRenderer.

Definition at line 179 of file qgs25drenderer.cpp.

◆ symbols()

QgsSymbolList Qgs25DRenderer::symbols ( QgsRenderContext context) const
overridevirtual

Returns list of symbols used by the renderer.

Parameters
contextrender context

Reimplemented from QgsFeatureRenderer.

Definition at line 186 of file qgs25drenderer.cpp.

◆ usedAttributes()

QSet< QString > Qgs25DRenderer::usedAttributes ( const QgsRenderContext context) const
overridevirtual

Returns a list of attributes required by this renderer.

Attributes not listed in here may not have been requested from the provider at rendering time.

Returns
A set of attributes

Implements QgsFeatureRenderer.

Definition at line 167 of file qgs25drenderer.cpp.

◆ wallColor()

QColor Qgs25DRenderer::wallColor ( ) const

Gets the wall color.

Definition at line 250 of file qgs25drenderer.cpp.

◆ wallShadingEnabled()

bool Qgs25DRenderer::wallShadingEnabled ( ) const

Gets wall shading enabled.

Definition at line 266 of file qgs25drenderer.cpp.


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