QGIS API Documentation 3.41.0-Master (d5b93354e9c)
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Filled marker symbol layer, consisting of a shape which is rendered using a QgsFillSymbol. More...
#include <qgsmarkersymbollayer.h>
Public Member Functions | |
QgsFilledMarkerSymbolLayer (Qgis::MarkerShape shape=Qgis::MarkerShape::Circle, double size=DEFAULT_SIMPLEMARKER_SIZE, double angle=DEFAULT_SIMPLEMARKER_ANGLE, Qgis::ScaleMethod scaleMethod=DEFAULT_SCALE_METHOD) | |
Constructor for QgsFilledMarkerSymbolLayer. | |
~QgsFilledMarkerSymbolLayer () override | |
QgsFilledMarkerSymbolLayer * | clone () const override |
Shall be reimplemented by subclasses to create a deep copy of the instance. | |
QColor | color () const override |
Returns the "representative" color of the symbol layer. | |
double | estimateMaxBleed (const QgsRenderContext &context) const override |
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context. | |
bool | hasDataDefinedProperties () const override |
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties. | |
QString | layerType () const override |
Returns a string that represents this layer type. | |
QVariantMap | properties () const override |
Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. | |
void | setColor (const QColor &c) override |
Sets the "representative" color for the symbol layer. | |
void | setOutputUnit (Qgis::RenderUnit unit) override |
Sets the units to use for sizes and widths within the symbol layer. | |
bool | setSubSymbol (QgsSymbol *symbol) override |
Sets layer's subsymbol. takes ownership of the passed symbol. | |
void | startRender (QgsSymbolRenderContext &context) override |
Called before a set of rendering operations commences on the supplied render context. | |
void | stopRender (QgsSymbolRenderContext &context) override |
Called after a set of rendering operations has finished on the supplied render context. | |
QgsSymbol * | subSymbol () override |
Returns the symbol's sub symbol, if present. | |
QSet< QString > | usedAttributes (const QgsRenderContext &context) const override |
Returns the set of attributes referenced by the layer. | |
bool | usesMapUnits () const override |
Returns true if the symbol layer has any components which use map unit based sizes. | |
Public Member Functions inherited from QgsSimpleMarkerSymbolLayerBase | |
QgsSimpleMarkerSymbolLayerBase (Qgis::MarkerShape shape=Qgis::MarkerShape::Circle, double size=DEFAULT_SIMPLEMARKER_SIZE, double angle=DEFAULT_SIMPLEMARKER_ANGLE, Qgis::ScaleMethod scaleMethod=DEFAULT_SCALE_METHOD) | |
Constructor for QgsSimpleMarkerSymbolLayerBase. | |
~QgsSimpleMarkerSymbolLayerBase () override | |
QRectF | bounds (QPointF point, QgsSymbolRenderContext &context) override |
Returns the approximate bounding box of the marker symbol layer, taking into account any data defined overrides and offsets which are set for the marker layer. | |
void | renderPoint (QPointF point, QgsSymbolRenderContext &context) override |
Renders a marker at the specified point. | |
void | setShape (Qgis::MarkerShape shape) |
Sets the rendered marker shape. | |
Qgis::MarkerShape | shape () const |
Returns the shape for the rendered marker symbol. | |
void | startRender (QgsSymbolRenderContext &context) override |
Called before a set of rendering operations commences on the supplied render context. | |
void | stopRender (QgsSymbolRenderContext &context) override |
Called after a set of rendering operations has finished on the supplied render context. | |
Public Member Functions inherited from QgsMarkerSymbolLayer | |
double | angle () const |
Returns the rotation angle for the marker, in degrees clockwise from north. | |
void | drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override |
virtual double | dxfAngle (QgsSymbolRenderContext &context) const override |
Gets angle. | |
virtual double | dxfSize (const QgsDxfExport &e, QgsSymbolRenderContext &context) const override |
Gets marker size. | |
HorizontalAnchorPoint | horizontalAnchorPoint () const |
Returns the horizontal anchor point for positioning the symbol. | |
QgsMapUnitScale | mapUnitScale () const override |
QPointF | offset () const |
Returns the marker's offset, which is the horizontal and vertical displacement which the rendered marker will have from the original feature's geometry. | |
const QgsMapUnitScale & | offsetMapUnitScale () const |
Returns the map unit scale for the symbol's offset. | |
Qgis::RenderUnit | offsetUnit () const |
Returns the units for the symbol's offset. | |
QgsMarkerSymbolLayer & | operator= (const QgsMarkerSymbolLayer &other)=delete |
Qgis::RenderUnit | outputUnit () const override |
Returns the units to use for sizes and widths within the symbol layer. | |
Qgis::ScaleMethod | scaleMethod () const |
Returns the method to use for scaling the marker's size. | |
void | setAngle (double angle) |
Sets the rotation angle for the marker. | |
void | setHorizontalAnchorPoint (HorizontalAnchorPoint h) |
Sets the horizontal anchor point for positioning the symbol. | |
void | setLineAngle (double lineAngle) |
Sets the line angle modification for the symbol's angle. | |
void | setMapUnitScale (const QgsMapUnitScale &scale) override |
void | setOffset (QPointF offset) |
Sets the marker's offset, which is the horizontal and vertical displacement which the rendered marker should have from the original feature's geometry. | |
void | setOffsetMapUnitScale (const QgsMapUnitScale &scale) |
Sets the map unit scale for the symbol's offset. | |
void | setOffsetUnit (Qgis::RenderUnit unit) |
Sets the units for the symbol's offset. | |
void | setOutputUnit (Qgis::RenderUnit unit) override |
Sets the units to use for sizes and widths within the symbol layer. | |
void | setScaleMethod (Qgis::ScaleMethod scaleMethod) |
Sets the method to use for scaling the marker's size. | |
virtual void | setSize (double size) |
Sets the symbol size. | |
void | setSizeMapUnitScale (const QgsMapUnitScale &scale) |
Sets the map unit scale for the symbol's size. | |
void | setSizeUnit (Qgis::RenderUnit unit) |
Sets the units for the symbol's size. | |
void | setVerticalAnchorPoint (VerticalAnchorPoint v) |
Sets the vertical anchor point for positioning the symbol. | |
double | size () const |
Returns the symbol size. | |
const QgsMapUnitScale & | sizeMapUnitScale () const |
Returns the map unit scale for the symbol's size. | |
Qgis::RenderUnit | sizeUnit () const |
Returns the units for the symbol's size. | |
void | toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override |
Saves the symbol layer as SLD. | |
VerticalAnchorPoint | verticalAnchorPoint () const |
Returns the vertical anchor point for positioning the symbol. | |
virtual void | writeSldMarker (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const |
Writes the symbol layer definition as a SLD XML element. | |
Public Member Functions inherited from QgsSymbolLayer | |
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. | |
QgsPropertyCollection & | dataDefinedProperties () |
Returns a reference to the symbol layer's property collection, used for data defined overrides. | |
const QgsPropertyCollection & | dataDefinedProperties () const |
Returns a reference to the symbol layer's property collection, used for data defined overrides. | |
virtual QColor | dxfBrushColor (QgsSymbolRenderContext &context) const |
Gets brush/fill color. | |
virtual Qt::BrushStyle | dxfBrushStyle () const |
Gets brush/fill style. | |
virtual QColor | dxfColor (QgsSymbolRenderContext &context) const |
Gets color. | |
virtual QVector< qreal > | dxfCustomDashPattern (Qgis::RenderUnit &unit) const |
Gets dash pattern. | |
virtual double | dxfOffset (const QgsDxfExport &e, QgsSymbolRenderContext &context) const |
Gets offset. | |
virtual Qt::PenStyle | dxfPenStyle () const |
Gets pen style. | |
virtual double | dxfWidth (const QgsDxfExport &e, QgsSymbolRenderContext &context) const |
Gets line width. | |
bool | enabled () const |
Returns true if symbol layer is enabled and will be drawn. | |
virtual QColor | fillColor () const |
Returns the fill color for the symbol layer. | |
virtual Qgis::SymbolLayerFlags | flags () const |
Returns flags which control the symbol layer's behavior. | |
QString | id () const |
Returns symbol layer identifier This id is unique in the whole project. | |
bool | installMasks (QgsRenderContext &context, bool recursive, const QRectF &rect=QRectF()) |
When rendering, install masks on context painter. | |
virtual bool | isCompatibleWithSymbol (QgsSymbol *symbol) const |
Returns if the layer can be used below the specified symbol. | |
bool | isLocked () const |
Returns true if the symbol layer colors are locked and the layer will ignore any symbol-level color changes. | |
virtual QList< QgsSymbolLayerReference > | masks () const |
Returns masks defined by this symbol layer. | |
virtual QString | ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const |
QgsSymbolLayer & | operator= (const QgsSymbolLayer &other)=delete |
QgsPaintEffect * | paintEffect () const |
Returns the current paint effect for the layer. | |
virtual void | prepareExpressions (const QgsSymbolRenderContext &context) |
Prepares all data defined property expressions for evaluation. | |
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. | |
int | renderingPass () const |
Specifies the rendering pass in which this symbol layer should be rendered. | |
void | setDataDefinedProperties (const QgsPropertyCollection &collection) |
Sets the symbol layer's property collection, used for data defined overrides. | |
virtual void | setDataDefinedProperty (Property key, const QgsProperty &property) |
Sets a data defined property for the layer. | |
void | setEnabled (bool enabled) |
Sets whether symbol layer is enabled and should be drawn. | |
virtual void | setFillColor (const QColor &color) |
Sets the fill color for the symbol layer. | |
void | setId (const QString &id) |
Set symbol layer identifier This id has to be unique in the whole project. | |
void | setLocked (bool locked) |
Sets whether the layer's colors are locked. | |
void | setPaintEffect (QgsPaintEffect *effect) |
Sets the current paint effect for the layer. | |
void | setRenderingPass (int renderingPass) |
Specifies the rendering pass in which this symbol layer should be rendered. | |
virtual void | setStrokeColor (const QColor &color) |
Sets the stroke color for the symbol layer. | |
void | setUserFlags (Qgis::SymbolLayerUserFlags flags) |
Sets user-controlled flags which control the symbol layer's behavior. | |
virtual void | startFeatureRender (const QgsFeature &feature, QgsRenderContext &context) |
Called before the layer will be rendered for a particular feature. | |
virtual void | stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context) |
Called after the layer has been rendered for a particular feature. | |
virtual QColor | strokeColor () const |
Returns the stroke color for the symbol layer. | |
Qgis::SymbolType | type () const |
Qgis::SymbolLayerUserFlags | userFlags () const |
Returns user-controlled flags which control the symbol layer's behavior. | |
virtual bool | writeDxf (QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift=QPointF(0.0, 0.0)) const |
write as DXF | |
Static Public Member Functions | |
static QgsSymbolLayer * | create (const QVariantMap &properties=QVariantMap()) |
Creates a new QgsFilledMarkerSymbolLayer. | |
Static Public Member Functions inherited from QgsSimpleMarkerSymbolLayerBase | |
static QList< Qgis::MarkerShape > | availableShapes () |
Returns a list of all available shape types. | |
static Qgis::MarkerShape | decodeShape (const QString &name, bool *ok=nullptr) |
Attempts to decode a string representation of a shape name to the corresponding shape. | |
static QString | encodeShape (Qgis::MarkerShape shape) |
Encodes a shape to its string representation. | |
static bool | shapeIsFilled (Qgis::MarkerShape shape) |
Returns true if a symbol shape has a fill. | |
Static Public Member Functions inherited from QgsSymbolLayer | |
static const QgsPropertiesDefinition & | propertyDefinitions () |
Returns the symbol layer property definitions. | |
Additional Inherited Members | |
Public Types inherited from QgsMarkerSymbolLayer | |
enum | HorizontalAnchorPoint { Left , HCenter , Right } |
Symbol horizontal anchor points. More... | |
enum | VerticalAnchorPoint { Top , VCenter , Bottom } |
Symbol vertical anchor points. More... | |
Public Types inherited from QgsSymbolLayer | |
enum class | Property : int { Size = 0 , Angle , Name , FillColor , StrokeColor , StrokeWidth , StrokeStyle , Offset , Character , Width , Height , PreserveAspectRatio , FillStyle , JoinStyle , SecondaryColor , LineAngle , LineDistance , GradientType , CoordinateMode , GradientSpread , GradientReference1X , GradientReference1Y , GradientReference2X , GradientReference2Y , GradientReference1IsCentroid , GradientReference2IsCentroid , BlurRadius , ShapeburstUseWholeShape , ShapeburstMaxDistance , ShapeburstIgnoreRings , File , DistanceX , DistanceY , DisplacementX , DisplacementY , Opacity , CustomDash , CapStyle , Placement , Interval , OffsetAlongLine , AverageAngleLength , HorizontalAnchor , VerticalAnchor , LayerEnabled , ArrowWidth , ArrowStartWidth , ArrowHeadLength , ArrowHeadThickness , ArrowHeadType , ArrowType , OffsetX , OffsetY , PointCount , RandomSeed , ClipPoints , DensityArea , FontFamily , FontStyle , DashPatternOffset , TrimStart , TrimEnd , LineStartWidthValue , LineEndWidthValue , LineStartColorValue , LineEndColorValue , MarkerClipping , RandomOffsetX , RandomOffsetY , LineClipping , SkipMultiples , ShowMarker } |
Data definable properties. More... | |
Protected Member Functions inherited from QgsSimpleMarkerSymbolLayerBase | |
void | calculateOffsetAndRotation (QgsSymbolRenderContext &context, double scaledSize, bool &hasDataDefinedRotation, QPointF &offset, double &angle) const |
Calculates the marker offset and rotation. | |
double | calculateSize (QgsSymbolRenderContext &context, bool &hasDataDefinedSize) const |
Calculates the desired size of the marker, considering data defined size overrides. | |
bool | prepareMarkerPath (Qgis::MarkerShape symbol) |
Prepares the layer for drawing the specified shape (QPainterPath version) | |
bool | prepareMarkerShape (Qgis::MarkerShape shape) |
Prepares the layer for drawing the specified shape (QPolygonF version) | |
bool | shapeToPolygon (Qgis::MarkerShape shape, QPolygonF &polygon) const |
Creates a polygon representing the specified shape. | |
Protected Member Functions inherited from QgsMarkerSymbolLayer | |
QgsMarkerSymbolLayer (bool locked=false) | |
Constructor for QgsMarkerSymbolLayer. | |
QgsMarkerSymbolLayer (const QgsMarkerSymbolLayer &other) | |
void | markerOffset (QgsSymbolRenderContext &context, double &offsetX, double &offsetY) const |
Calculates the required marker offset, including both the symbol offset and any displacement required to align with the marker's anchor point. | |
void | markerOffset (QgsSymbolRenderContext &context, double width, double height, double &offsetX, double &offsetY) const |
Calculates the required marker offset, including both the symbol offset and any displacement required to align with the marker's anchor point. | |
void | markerOffset (QgsSymbolRenderContext &context, double width, double height, Qgis::RenderUnit widthUnit, Qgis::RenderUnit heightUnit, double &offsetX, double &offsetY, const QgsMapUnitScale &widthMapUnitScale, const QgsMapUnitScale &heightMapUnitScale) const |
Protected Member Functions inherited from QgsSymbolLayer | |
QgsSymbolLayer (const QgsSymbolLayer &other) | |
QgsSymbolLayer (Qgis::SymbolType type, bool locked=false) | |
Constructor for QgsSymbolLayer. | |
void | copyDataDefinedProperties (QgsSymbolLayer *destLayer) const |
Copies all data defined properties of this layer to another symbol layer. | |
void | copyPaintEffect (QgsSymbolLayer *destLayer) const |
Copies paint effect of this layer to another symbol layer. | |
void | removeMasks (QgsRenderContext &context, bool recursive) |
When rendering, remove previously installed masks from context painter if recursive is true masks are removed recursively for all children symbol layers. | |
void | restoreOldDataDefinedProperties (const QVariantMap &stringMap) |
Restores older data defined properties from string map. | |
bool | shouldRenderUsingSelectionColor (const QgsSymbolRenderContext &context) const |
Returns true if the symbol layer should be rendered using the selection color from the render context. | |
Static Protected Member Functions inherited from QgsMarkerSymbolLayer | |
static QPointF | _rotatedOffset (QPointF offset, double angle) |
Adjusts a marker offset to account for rotation. | |
Protected Attributes inherited from QgsSimpleMarkerSymbolLayerBase | |
QPainterPath | mPath |
Painter path representing shape. If mPolygon is empty then the shape is stored in mPath. | |
QPolygonF | mPolygon |
Polygon of points in shape. If polygon is empty then shape is using mPath. | |
Qgis::MarkerShape | mShape |
Symbol shape. | |
Protected Attributes inherited from QgsMarkerSymbolLayer | |
double | mAngle = 0 |
Marker rotation angle, in degrees clockwise from north. | |
HorizontalAnchorPoint | mHorizontalAnchorPoint = HCenter |
Horizontal anchor point. | |
double | mLineAngle = 0 |
Line rotation angle (see setLineAngle() for details) | |
QPointF | mOffset |
Marker offset. | |
QgsMapUnitScale | mOffsetMapUnitScale |
Offset map unit scale. | |
Qgis::RenderUnit | mOffsetUnit = Qgis::RenderUnit::Millimeters |
Offset units. | |
Qgis::ScaleMethod | mScaleMethod = Qgis::ScaleMethod::ScaleDiameter |
Marker size scaling method. | |
double | mSize = 2.0 |
Marker size. | |
QgsMapUnitScale | mSizeMapUnitScale |
Marker size map unit scale. | |
Qgis::RenderUnit | mSizeUnit = Qgis::RenderUnit::Millimeters |
Marker size unit. | |
VerticalAnchorPoint | mVerticalAnchorPoint = VCenter |
Vertical anchor point. | |
Protected Attributes inherited from QgsSymbolLayer | |
QPainterPath | mClipPath |
QColor | mColor |
QgsPropertyCollection | mDataDefinedProperties |
bool | mEnabled = true |
True if layer is enabled and should be drawn. | |
QgsFields | mFields |
QString | mId |
bool | mLocked = false |
std::unique_ptr< QgsPaintEffect > | mPaintEffect |
int | mRenderingPass = 0 |
Qgis::SymbolType | mType |
Qgis::SymbolLayerUserFlags | mUserFlags |
User controlled flags. | |
Static Protected Attributes inherited from QgsSymbolLayer | |
static const bool | SELECT_FILL_BORDER = false |
Whether fill styles for selected features also highlight symbol stroke. | |
static const bool | SELECT_FILL_STYLE = false |
Whether fill styles for selected features uses symbol layer style. | |
static const bool | SELECTION_IS_OPAQUE = true |
Whether styles for selected features ignore symbol alpha. | |
Filled marker symbol layer, consisting of a shape which is rendered using a QgsFillSymbol.
This allows the symbol to support advanced styling of the interior and stroke of the shape.
Definition at line 430 of file qgsmarkersymbollayer.h.
QgsFilledMarkerSymbolLayer::QgsFilledMarkerSymbolLayer | ( | Qgis::MarkerShape | shape = Qgis::MarkerShape::Circle , |
double | size = DEFAULT_SIMPLEMARKER_SIZE , |
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double | angle = DEFAULT_SIMPLEMARKER_ANGLE , |
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Qgis::ScaleMethod | scaleMethod = DEFAULT_SCALE_METHOD |
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Constructor for QgsFilledMarkerSymbolLayer.
shape | symbol shape |
size | symbol size (in mm) |
angle | symbol rotation angle |
scaleMethod | size scaling method |
Definition at line 1866 of file qgsmarkersymbollayer.cpp.
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overridedefault |
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overridevirtual |
Shall be reimplemented by subclasses to create a deep copy of the instance.
Implements QgsSymbolLayer.
Definition at line 1963 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
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 2024 of file qgsmarkersymbollayer.cpp.
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static |
Creates a new QgsFilledMarkerSymbolLayer.
properties | a property map containing symbol properties (see properties()) |
Definition at line 1874 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context.
For example, polygons drawn with an stroke will draw half the width of the stroke outside of the polygon. This amount is estimated, since it may be affected by data defined symbology rules.
Reimplemented from QgsSymbolLayer.
Definition at line 1991 of file qgsmarkersymbollayer.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 2008 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
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 1917 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
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 1941 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
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 2017 of file qgsmarkersymbollayer.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 2036 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
Sets layer's subsymbol. takes ownership of the passed symbol.
Reimplemented from QgsSymbolLayer.
Definition at line 1977 of file qgsmarkersymbollayer.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 1922 of file qgsmarkersymbollayer.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 1933 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
Returns the symbol's sub symbol, if present.
Reimplemented from QgsSymbolLayer.
Definition at line 1972 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
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 2000 of file qgsmarkersymbollayer.cpp.
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overridevirtual |
Returns true
if the symbol layer has any components which use map unit based sizes.
Reimplemented from QgsSymbolLayer.
Definition at line 2029 of file qgsmarkersymbollayer.cpp.