QGIS API Documentation 3.32.0-Lima (311a8cb8a6)
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#include <qgsfillsymbollayer.h>
Public Member Functions | |
QgsCentroidFillSymbolLayer () | |
~QgsCentroidFillSymbolLayer () override | |
bool | canCauseArtifactsBetweenAdjacentTiles () const override |
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry. More... | |
bool | clipOnCurrentPartOnly () const |
Returns true if point markers should be clipped to the current part boundary only. More... | |
bool | clipPoints () const |
Returns true if point markers should be clipped to the polygon boundary. More... | |
QgsCentroidFillSymbolLayer * | clone () const override |
Shall be reimplemented by subclasses to create a deep copy of the instance. More... | |
QColor | color () const override |
Returns the "representative" color of the symbol layer. More... | |
bool | hasDataDefinedProperties () const override |
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties. More... | |
QString | layerType () const override |
Returns a string that represents this layer type. More... | |
QgsMapUnitScale | mapUnitScale () const override |
Qgis::RenderUnit | outputUnit () const override |
Returns the units to use for sizes and widths within the symbol layer. More... | |
bool | pointOnAllParts () const |
Returns whether a point is drawn for all parts or only on the biggest part of multi-part features. More... | |
bool | pointOnSurface () const |
QVariantMap | properties () const override |
Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. More... | |
void | renderPolygon (const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override |
Renders the fill symbol layer for the polygon whose outer ring is defined by points, using the given render context. More... | |
void | setClipOnCurrentPartOnly (bool clipOnCurrentPartOnly) |
Sets whether point markers should be clipped to the current part boundary only. More... | |
void | setClipPoints (bool clipPoints) |
Sets whether point markers should be clipped to the polygon boundary. More... | |
void | setColor (const QColor &color) override |
Sets the "representative" color for the symbol layer. More... | |
void | setMapUnitScale (const QgsMapUnitScale &scale) override |
void | setOutputUnit (Qgis::RenderUnit unit) override |
Sets the units to use for sizes and widths within the symbol layer. More... | |
void | setPointOnAllParts (bool pointOnAllParts) |
Sets whether a point is drawn for all parts or only on the biggest part of multi-part features. More... | |
void | setPointOnSurface (bool pointOnSurface) |
bool | setSubSymbol (QgsSymbol *symbol) override |
Sets layer's subsymbol. takes ownership of the passed symbol. More... | |
void | startFeatureRender (const QgsFeature &feature, QgsRenderContext &context) override |
Called before the layer will be rendered for a particular feature. More... | |
void | startRender (QgsSymbolRenderContext &context) override |
Called before a set of rendering operations commences on the supplied render context. More... | |
void | stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context) override |
Called after the layer has been rendered for a particular feature. More... | |
void | stopRender (QgsSymbolRenderContext &context) override |
Called after a set of rendering operations has finished on the supplied render context. More... | |
QgsSymbol * | subSymbol () override |
Returns the symbol's sub symbol, if present. More... | |
void | toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override |
Saves the symbol layer as SLD. More... | |
QSet< QString > | usedAttributes (const QgsRenderContext &context) const override |
Returns the set of attributes referenced by the layer. More... | |
bool | usesMapUnits () const override |
Returns true if the symbol layer has any components which use map unit based sizes. More... | |
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QgsFillSymbolLayer (const QgsFillSymbolLayer &other)=delete | |
QgsFillSymbolLayer cannot be copied. More... | |
double | angle () const |
Returns the rotation angle of the fill symbol, in degrees clockwise. More... | |
void | drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override |
QgsFillSymbolLayer & | operator= (const QgsFillSymbolLayer &other)=delete |
QgsFillSymbolLayer cannot be copied. More... | |
virtual void | renderPolygon (const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)=0 |
Renders the fill symbol layer for the polygon whose outer ring is defined by points, using the given render context. More... | |
void | setAngle (double angle) |
Sets the rotation angle of the pattern, in degrees clockwise. More... | |
virtual QImage | toTiledPatternImage () const |
Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons, this method is used by SLD export to generate image tiles for ExternalGraphic polygon fills. More... | |
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QgsSymbolLayer (const QgsSymbolLayer &other)=delete | |
QgsSymbolLayer cannot be copied. More... | |
virtual | ~QgsSymbolLayer () |
virtual bool | canCauseArtifactsBetweenAdjacentTiles () const |
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry. More... | |
virtual QgsSymbolLayer * | clone () const =0 |
Shall be reimplemented by subclasses to create a deep copy of the instance. More... | |
virtual QColor | color () const |
Returns the "representative" color of the symbol layer. More... | |
QgsPropertyCollection & | dataDefinedProperties () |
Returns a reference to the symbol layer's property collection, used for data defined overrides. More... | |
const QgsPropertyCollection & | dataDefinedProperties () const |
Returns a reference to the symbol layer's property collection, used for data defined overrides. More... | |
virtual void | drawPreviewIcon (QgsSymbolRenderContext &context, QSize size)=0 |
virtual double | dxfAngle (QgsSymbolRenderContext &context) const |
Gets angle. More... | |
virtual QColor | dxfBrushColor (QgsSymbolRenderContext &context) const |
Gets brush/fill color. More... | |
virtual Qt::BrushStyle | dxfBrushStyle () const |
Gets brush/fill style. More... | |
virtual QColor | dxfColor (QgsSymbolRenderContext &context) const |
Gets color. More... | |
virtual QVector< qreal > | dxfCustomDashPattern (Qgis::RenderUnit &unit) const |
Gets dash pattern. More... | |
virtual double | dxfOffset (const QgsDxfExport &e, QgsSymbolRenderContext &context) const |
Gets offset. More... | |
virtual Qt::PenStyle | dxfPenStyle () const |
Gets pen style. More... | |
virtual double | dxfSize (const QgsDxfExport &e, QgsSymbolRenderContext &context) const |
Gets marker size. More... | |
virtual double | dxfWidth (const QgsDxfExport &e, QgsSymbolRenderContext &context) const |
Gets line width. More... | |
bool | enabled () const |
Returns true if symbol layer is enabled and will be drawn. More... | |
virtual double | estimateMaxBleed (const QgsRenderContext &context) const |
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context. More... | |
virtual QColor | fillColor () const |
Returns the fill color for the symbol layer. More... | |
virtual Qgis::SymbolLayerFlags | flags () const |
Returns flags which control the symbol layer's behavior. More... | |
virtual bool | hasDataDefinedProperties () const |
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties. More... | |
QString | id () const |
Returns symbol layer identifier This id is unique in the whole project. More... | |
virtual bool | isCompatibleWithSymbol (QgsSymbol *symbol) const |
Returns if the layer can be used below the specified symbol. More... | |
bool | isLocked () const |
Returns true if the symbol layer colors are locked and the layer will ignore any symbol-level color changes. More... | |
virtual QString | layerType () const =0 |
Returns a string that represents this layer type. More... | |
virtual QgsMapUnitScale | mapUnitScale () const |
virtual QList< QgsSymbolLayerReference > | masks () const |
Returns masks defined by this symbol layer. More... | |
virtual QString | ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const |
QgsSymbolLayer & | operator= (const QgsSymbolLayer &other)=delete |
QgsSymbolLayer cannot be copied. More... | |
virtual Qgis::RenderUnit | outputUnit () const |
Returns the units to use for sizes and widths within the symbol layer. More... | |
QgsPaintEffect * | paintEffect () const |
Returns the current paint effect for the layer. More... | |
virtual void | prepareExpressions (const QgsSymbolRenderContext &context) |
Prepares all data defined property expressions for evaluation. More... | |
virtual void | prepareMasks (const QgsSymbolRenderContext &context) |
Prepares all mask internal objects according to what is defined in context This should be called prior to calling startRender() method. More... | |
virtual QVariantMap | properties () const =0 |
Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. More... | |
int | renderingPass () const |
Specifies the rendering pass in which this symbol layer should be rendered. More... | |
virtual void | setColor (const QColor &color) |
Sets the "representative" color for the symbol layer. More... | |
void | setDataDefinedProperties (const QgsPropertyCollection &collection) |
Sets the symbol layer's property collection, used for data defined overrides. More... | |
virtual void | setDataDefinedProperty (Property key, const QgsProperty &property) |
Sets a data defined property for the layer. More... | |
void | setEnabled (bool enabled) |
Sets whether symbol layer is enabled and should be drawn. More... | |
virtual void | setFillColor (const QColor &color) |
Sets the fill color for the symbol layer. More... | |
void | setId (const QString &id) |
Set symbol layer identifier This id has to be unique in the whole project. More... | |
void | setLocked (bool locked) |
Sets whether the layer's colors are locked. More... | |
virtual void | setMapUnitScale (const QgsMapUnitScale &scale) |
virtual void | setOutputUnit (Qgis::RenderUnit unit) |
Sets the units to use for sizes and widths within the symbol layer. More... | |
void | setPaintEffect (QgsPaintEffect *effect) |
Sets the current paint effect for the layer. More... | |
void | setRenderingPass (int renderingPass) |
Specifies the rendering pass in which this symbol layer should be rendered. More... | |
virtual void | setStrokeColor (const QColor &color) |
Sets the stroke color for the symbol layer. More... | |
virtual bool | setSubSymbol (QgsSymbol *symbol) |
Sets layer's subsymbol. takes ownership of the passed symbol. More... | |
virtual void | startFeatureRender (const QgsFeature &feature, QgsRenderContext &context) |
Called before the layer will be rendered for a particular feature. More... | |
virtual void | startRender (QgsSymbolRenderContext &context)=0 |
Called before a set of rendering operations commences on the supplied render context. More... | |
virtual void | stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context) |
Called after the layer has been rendered for a particular feature. More... | |
virtual void | stopRender (QgsSymbolRenderContext &context)=0 |
Called after a set of rendering operations has finished on the supplied render context. More... | |
virtual QColor | strokeColor () const |
Returns the stroke color for the symbol layer. More... | |
virtual QgsSymbol * | subSymbol () |
Returns the symbol's sub symbol, if present. More... | |
virtual void | toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const |
Saves the symbol layer as SLD. More... | |
Qgis::SymbolType | type () const |
virtual QSet< QString > | usedAttributes (const QgsRenderContext &context) const |
Returns the set of attributes referenced by the layer. More... | |
virtual bool | usesMapUnits () const |
Returns true if the symbol layer has any components which use map unit based sizes. More... | |
virtual bool | writeDxf (QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift=QPointF(0.0, 0.0)) const |
write as DXF More... | |
Static Public Member Functions | |
static QgsSymbolLayer * | create (const QVariantMap &properties=QVariantMap()) |
Creates a new QgsCentroidFillSymbolLayer using the specified properties map containing symbol properties (see properties()). More... | |
static QgsSymbolLayer * | createFromSld (QDomElement &element) |
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static const QgsPropertiesDefinition & | propertyDefinitions () |
Returns the symbol layer property definitions. More... | |
Protected Attributes | |
bool | mClipOnCurrentPartOnly = false |
bool | mClipPoints = false |
double | mFeatureSymbolOpacity = 1 |
std::unique_ptr< QgsMarkerSymbol > | mMarker |
bool | mPointOnAllParts = true |
bool | mPointOnSurface = false |
bool | mRenderingFeature = false |
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double | mAngle = 0.0 |
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QPainterPath | mClipPath |
QColor | mColor |
QgsPropertyCollection | mDataDefinedProperties |
bool | mEnabled = true |
True if layer is enabled and should be drawn. More... | |
QgsFields | mFields |
QString | mId |
bool | mLocked = false |
std::unique_ptr< QgsPaintEffect > | mPaintEffect |
int | mRenderingPass = 0 |
Qgis::SymbolType | mType |
Definition at line 2419 of file qgsfillsymbollayer.h.
QgsCentroidFillSymbolLayer::QgsCentroidFillSymbolLayer | ( | ) |
Definition at line 4721 of file qgsfillsymbollayer.cpp.
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Returns true
if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry.
The default implementation returns false
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Reimplemented from QgsSymbolLayer.
Definition at line 4994 of file qgsfillsymbollayer.cpp.
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Returns true
if point markers should be clipped to the current part boundary only.
Definition at line 2496 of file qgsfillsymbollayer.h.
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Returns true
if point markers should be clipped to the polygon boundary.
Definition at line 2480 of file qgsfillsymbollayer.h.
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overridevirtual |
Shall be reimplemented by subclasses to create a deep copy of the instance.
Implements QgsSymbolLayer.
Definition at line 4917 of file qgsfillsymbollayer.cpp.
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Returns the "representative" color of the symbol layer.
Depending on the symbol layer type, this will have different meaning. For instance, a line symbol layer will generally return the stroke color of the layer, while a fill symbol layer will return the "fill" color instead of stroke.
Some symbol layer types will return an invalid QColor if they have no representative color associated (e.g. raster image based symbol layers).
Reimplemented from QgsSymbolLayer.
Definition at line 4757 of file qgsfillsymbollayer.cpp.
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Creates a new QgsCentroidFillSymbolLayer using the specified properties map containing symbol properties (see properties()).
Caller takes ownership of the returned symbol layer.
Definition at line 4728 of file qgsfillsymbollayer.cpp.
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Definition at line 4940 of file qgsfillsymbollayer.cpp.
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Returns true
if the symbol layer (or any of its sub-symbols) contains data defined properties.
Reimplemented from QgsSymbolLayer.
Definition at line 4985 of file qgsfillsymbollayer.cpp.
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Returns a string that represents this layer type.
Used for serialization. Should match with the string used to register this symbol layer in the registry.
Implements QgsSymbolLayer.
Definition at line 4746 of file qgsfillsymbollayer.cpp.
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Reimplemented from QgsSymbolLayer.
Definition at line 5033 of file qgsfillsymbollayer.cpp.
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Returns the units to use for sizes and widths within the symbol layer.
Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.
Reimplemented from QgsSymbolLayer.
Definition at line 5007 of file qgsfillsymbollayer.cpp.
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Returns whether a point is drawn for all parts or only on the biggest part of multi-part features.
Definition at line 2472 of file qgsfillsymbollayer.h.
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Definition at line 2458 of file qgsfillsymbollayer.h.
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Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer.
This is used to serialize a symbol layer perstistently.
Implements QgsSymbolLayer.
Definition at line 4907 of file qgsfillsymbollayer.cpp.
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Renders the fill symbol layer for the polygon whose outer ring is defined by points, using the given render context.
The rings argument optionally specifies a list of polygon rings to render as holes.
Implements QgsFillSymbolLayer.
Definition at line 4772 of file qgsfillsymbollayer.cpp.
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Sets whether point markers should be clipped to the current part boundary only.
Definition at line 2504 of file qgsfillsymbollayer.h.
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Sets whether point markers should be clipped to the polygon boundary.
Definition at line 2488 of file qgsfillsymbollayer.h.
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Sets the "representative" color for the symbol layer.
Depending on the symbol layer type, this will have different meaning. For instance, a line symbol layer will generally set the stroke color of the layer, while a fill symbol layer will set the "fill" color instead of stroke.
Reimplemented from QgsSymbolLayer.
Definition at line 4751 of file qgsfillsymbollayer.cpp.
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Reimplemented from QgsSymbolLayer.
Definition at line 5025 of file qgsfillsymbollayer.cpp.
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overridevirtual |
Sets the units to use for sizes and widths within the symbol layer.
Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.
unit | output units |
Reimplemented from QgsSymbolLayer.
Definition at line 4999 of file qgsfillsymbollayer.cpp.
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Sets whether a point is drawn for all parts or only on the biggest part of multi-part features.
Definition at line 2465 of file qgsfillsymbollayer.h.
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Definition at line 2457 of file qgsfillsymbollayer.h.
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Sets layer's subsymbol. takes ownership of the passed symbol.
Reimplemented from QgsSymbolLayer.
Definition at line 4962 of file qgsfillsymbollayer.cpp.
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Called before the layer will be rendered for a particular feature.
This is always followed by a call to stopFeatureRender() after the feature has been completely rendered (i.e. all parts have been rendered).
The default implementation does nothing.
Reimplemented from QgsSymbolLayer.
Definition at line 4796 of file qgsfillsymbollayer.cpp.
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overridevirtual |
Called before a set of rendering operations commences on the supplied render context.
This is always followed by a call to stopRender() after all rendering operations have been completed.
Subclasses can use this method to prepare for a set of rendering operations, e.g. by pre-evaluating paths or images to render, and performing other one-time optimisations.
Implements QgsSymbolLayer.
Definition at line 4762 of file qgsfillsymbollayer.cpp.
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Called after the layer has been rendered for a particular feature.
This is always preceded by a call to startFeatureRender() just before the feature will be rendered.
The default implementation does nothing.
Reimplemented from QgsSymbolLayer.
Definition at line 4804 of file qgsfillsymbollayer.cpp.
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overridevirtual |
Called after a set of rendering operations has finished on the supplied render context.
This is always preceded by a call to startRender() before all rendering operations are commenced.
Subclasses can use this method to cleanup after a set of rendering operations.
Implements QgsSymbolLayer.
Definition at line 4767 of file qgsfillsymbollayer.cpp.
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Returns the symbol's sub symbol, if present.
Reimplemented from QgsSymbolLayer.
Definition at line 4957 of file qgsfillsymbollayer.cpp.
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Saves the symbol layer as SLD.
Reimplemented from QgsSymbolLayer.
Definition at line 4932 of file qgsfillsymbollayer.cpp.
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Returns the set of attributes referenced by the layer.
This includes attributes required by any data defined properties associated with the layer.
Reimplemented from QgsSymbolLayer.
Definition at line 4975 of file qgsfillsymbollayer.cpp.
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Returns true
if the symbol layer has any components which use map unit based sizes.
Reimplemented from QgsSymbolLayer.
Definition at line 5016 of file qgsfillsymbollayer.cpp.
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Definition at line 2515 of file qgsfillsymbollayer.h.
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Definition at line 2514 of file qgsfillsymbollayer.h.
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Definition at line 2518 of file qgsfillsymbollayer.h.
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Definition at line 2511 of file qgsfillsymbollayer.h.
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Definition at line 2513 of file qgsfillsymbollayer.h.
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Definition at line 2512 of file qgsfillsymbollayer.h.
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Definition at line 2517 of file qgsfillsymbollayer.h.