QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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#include <qgsmarkersymbollayer.h>
Public Member Functions | |
QgsFontMarkerSymbolLayer (const QString &fontFamily=DEFAULT_FONTMARKER_FONT, QString chr=DEFAULT_FONTMARKER_CHR, double pointSize=DEFAULT_FONTMARKER_SIZE, const QColor &color=DEFAULT_FONTMARKER_COLOR, double angle=DEFAULT_FONTMARKER_ANGLE) | |
Constructs a font marker symbol layer. | |
~QgsFontMarkerSymbolLayer () 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. | |
QString | character () const |
Returns the character(s) used when rendering points. | |
QgsFontMarkerSymbolLayer * | clone () const override |
Shall be reimplemented by subclasses to create a deep copy of the instance. | |
Qgis::SymbolLayerFlags | flags () const override |
Returns flags which control the symbol layer's behavior. | |
QString | fontFamily () const |
Returns the font family name for the associated font which will be used to render the point. | |
QString | fontStyle () const |
Returns the font style for the associated font which will be used to render the point. | |
QString | layerType () const override |
Returns a string that represents this layer type. | |
Qt::PenJoinStyle | penJoinStyle () const |
Returns the stroke join style. | |
QVariantMap | properties () const override |
Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. | |
void | renderPoint (QPointF point, QgsSymbolRenderContext &context) override |
Renders a marker at the specified point. | |
void | setCharacter (QString chr) |
Sets the character(s) used when rendering points. | |
void | setFontFamily (const QString &family) |
Sets the font family for the font which will be used to render the point. | |
void | setFontStyle (const QString &style) |
Sets the font style for the font which will be used to render the point. | |
void | setOutputUnit (Qgis::RenderUnit unit) override |
Sets the units to use for sizes and widths within the symbol layer. | |
void | setPenJoinStyle (Qt::PenJoinStyle style) |
Sets the stroke join style. | |
void | setStrokeColor (const QColor &color) override |
Sets the stroke color for the symbol layer. | |
void | setStrokeWidth (double width) |
Set's the marker's stroke width. | |
void | setStrokeWidthMapUnitScale (const QgsMapUnitScale &scale) |
Sets the stroke width map unit scale. | |
void | setStrokeWidthUnit (Qgis::RenderUnit unit) |
Sets the stroke width unit. | |
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. | |
QColor | strokeColor () const override |
Returns the stroke color for the symbol layer. | |
double | strokeWidth () const |
Returns the marker's stroke width. | |
const QgsMapUnitScale & | strokeWidthMapUnitScale () const |
Returns the stroke width map unit scale. | |
Qgis::RenderUnit | strokeWidthUnit () const |
Returns the stroke width unit. | |
bool | usesMapUnits () const override |
Returns true if the symbol layer has any components which use map unit based sizes. | |
void | writeSldMarker (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override |
Writes the symbol layer definition as a SLD XML element. | |
Public Member Functions inherited from QgsMarkerSymbolLayer | |
QgsMarkerSymbolLayer (const QgsMarkerSymbolLayer &other)=delete | |
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 | 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. | |
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. | |
Public Member Functions inherited from QgsSymbolLayer | |
QgsSymbolLayer (const QgsSymbolLayer &other)=delete | |
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. | |
virtual QColor | color () const |
Returns the "representative" color of the symbol layer. | |
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 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. | |
virtual QColor | fillColor () const |
Returns the fill color for the symbol layer. | |
virtual bool | hasDataDefinedProperties () const |
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties. | |
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. | |
virtual void | setColor (const QColor &color) |
Sets the "representative" color for the symbol layer. | |
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 bool | setSubSymbol (QgsSymbol *symbol) |
Sets layer's subsymbol. takes ownership of the passed symbol. | |
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 QgsSymbol * | subSymbol () |
Returns the symbol's sub symbol, if present. | |
Qgis::SymbolType | type () const |
virtual QSet< QString > | usedAttributes (const QgsRenderContext &context) const |
Returns the set of attributes referenced by the layer. | |
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 QgsFontMarkerSymbolLayer from a property map (see properties()) | |
static QgsSymbolLayer * | createFromSld (QDomElement &element) |
Creates a new QgsFontMarkerSymbolLayer from an SLD XML element. | |
static void | resolveFonts (const QVariantMap &properties, const QgsReadWriteContext &context) |
Resolves fonts from a properties map, raising warnings in the specified context if the required fonts are not available on the system. | |
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 QgsMarkerSymbolLayer | |
QgsMarkerSymbolLayer (bool locked=false) | |
Constructor for QgsMarkerSymbolLayer. | |
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 (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 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. | |
Definition at line 852 of file qgsmarkersymbollayer.h.
QgsFontMarkerSymbolLayer::QgsFontMarkerSymbolLayer | ( | const QString & | fontFamily = DEFAULT_FONTMARKER_FONT , |
QString | chr = DEFAULT_FONTMARKER_CHR , |
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double | pointSize = DEFAULT_FONTMARKER_SIZE , |
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const QColor & | color = DEFAULT_FONTMARKER_COLOR , |
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double | angle = DEFAULT_FONTMARKER_ANGLE |
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Constructs a font marker symbol layer.
Definition at line 3451 of file qgsmarkersymbollayer.cpp.
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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.
Implements QgsMarkerSymbolLayer.
Definition at line 3912 of file qgsmarkersymbollayer.cpp.
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Returns the character(s) used when rendering points.
Definition at line 941 of file qgsmarkersymbollayer.h.
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Shall be reimplemented by subclasses to create a deep copy of the instance.
Implements QgsSymbolLayer.
Definition at line 3848 of file qgsmarkersymbollayer.cpp.
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Creates a new QgsFontMarkerSymbolLayer from a property map (see properties())
Definition at line 3470 of file qgsmarkersymbollayer.cpp.
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Creates a new QgsFontMarkerSymbolLayer from an SLD XML element.
Definition at line 3950 of file qgsmarkersymbollayer.cpp.
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Returns flags which control the symbol layer's behavior.
Reimplemented from QgsSymbolLayer.
Definition at line 3539 of file qgsmarkersymbollayer.cpp.
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Returns the font family name for the associated font which will be used to render the point.
Definition at line 911 of file qgsmarkersymbollayer.h.
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Returns the font style for the associated font which will be used to render the point.
Definition at line 926 of file qgsmarkersymbollayer.h.
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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 3534 of file qgsmarkersymbollayer.cpp.
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Returns the stroke join style.
Definition at line 1018 of file qgsmarkersymbollayer.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 3815 of file qgsmarkersymbollayer.cpp.
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Renders a marker at the specified point.
Derived classes must implement this to handle drawing the point.
point | position at which to render point, in painter units |
context | symbol render context |
Implements QgsMarkerSymbolLayer.
Definition at line 3695 of file qgsmarkersymbollayer.cpp.
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Resolves fonts from a properties map, raising warnings in the specified context if the required fonts are not available on the system.
Definition at line 3998 of file qgsmarkersymbollayer.cpp.
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Sets the character(s) used when rendering points.
Definition at line 948 of file qgsmarkersymbollayer.h.
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Sets the font family for the font which will be used to render the point.
Definition at line 918 of file qgsmarkersymbollayer.h.
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Sets the font style for the font which will be used to render the point.
Definition at line 934 of file qgsmarkersymbollayer.h.
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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 3906 of file qgsmarkersymbollayer.cpp.
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Sets the stroke join style.
Definition at line 1026 of file qgsmarkersymbollayer.h.
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Sets the stroke color for the symbol layer.
This property is not supported by all symbol layer types, only those with a stroke component.
Reimplemented from QgsSymbolLayer.
Definition at line 951 of file qgsmarkersymbollayer.h.
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Set's the marker's stroke width.
Units are set by setStrokeWidthUnit().
Definition at line 971 of file qgsmarkersymbollayer.h.
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Sets the stroke width map unit scale.
Definition at line 1010 of file qgsmarkersymbollayer.h.
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Sets the stroke width unit.
Definition at line 990 of file qgsmarkersymbollayer.h.
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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 3544 of file qgsmarkersymbollayer.cpp.
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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 3599 of file qgsmarkersymbollayer.cpp.
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Returns the stroke color for the symbol layer.
This property is not supported by all symbol layer types, only those with a stroke component. Symbol layers without a stroke component will return an invalid QColor.
Reimplemented from QgsSymbolLayer.
Definition at line 950 of file qgsmarkersymbollayer.h.
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Returns the marker's stroke width.
Units are retrieved by strokeWidthUnit()
Definition at line 961 of file qgsmarkersymbollayer.h.
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Returns the stroke width map unit scale.
Definition at line 1000 of file qgsmarkersymbollayer.h.
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Returns the stroke width unit.
Definition at line 981 of file qgsmarkersymbollayer.h.
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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 3899 of file qgsmarkersymbollayer.cpp.
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Writes the symbol layer definition as a SLD XML element.
doc | XML document |
element | parent XML element |
props | symbol layer definition (see properties()) |
Reimplemented from QgsMarkerSymbolLayer.
Definition at line 3869 of file qgsmarkersymbollayer.cpp.