QGIS API Documentation  3.1.0-Master (97726d6)
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
QgsLineSymbolLayer Class Referenceabstract

#include <qgssymbollayer.h>

Inheritance diagram for QgsLineSymbolLayer:
Inheritance graph
[legend]

Public Member Functions

void drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override
 
double dxfWidth (const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
 Gets line width. More...
 
QgsMapUnitScale mapUnitScale () const override
 
double offset () const
 
const QgsMapUnitScaleoffsetMapUnitScale () const
 
QgsUnitTypes::RenderUnit offsetUnit () const
 Returns the units for the line's offset. More...
 
QgsUnitTypes::RenderUnit outputUnit () const override
 Returns the units to use for sizes and widths within the symbol layer. More...
 
virtual void renderPolygonStroke (const QPolygonF &points, QList< QPolygonF > *rings, QgsSymbolRenderContext &context)
 
virtual void renderPolyline (const QPolygonF &points, QgsSymbolRenderContext &context)=0
 
void setMapUnitScale (const QgsMapUnitScale &scale) override
 
void setOffset (double offset)
 
void setOffsetMapUnitScale (const QgsMapUnitScale &scale)
 
void setOffsetUnit (QgsUnitTypes::RenderUnit unit)
 Sets the units for the line's offset. More...
 
void setOutputUnit (QgsUnitTypes::RenderUnit unit) override
 Sets the units to use for sizes and widths within the symbol layer. More...
 
virtual void setWidth (double width)
 
void setWidthMapUnitScale (const QgsMapUnitScale &scale)
 
void setWidthUnit (QgsUnitTypes::RenderUnit unit)
 Sets the units for the line's width. More...
 
virtual double width () const
 
const QgsMapUnitScalewidthMapUnitScale () const
 
QgsUnitTypes::RenderUnit widthUnit () const
 Returns the units for the line's width. More...
 
- Public Member Functions inherited from QgsSymbolLayer
virtual ~QgsSymbolLayer ()
 
virtual QgsSymbolLayerclone () const =0
 Shall be reimplemented by subclasses to create a deep copy of the instance. More...
 
virtual QColor color () const
 The fill color. More...
 
QgsPropertyCollectiondataDefinedProperties ()
 Returns a reference to the symbol layer's property collection, used for data defined overrides. More...
 
const QgsPropertyCollectiondataDefinedProperties () const
 Returns a reference to the symbol layer's property collection, used for data defined overrides. More...
 
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 (QgsUnitTypes::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...
 
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
 Gets fill color. More...
 
virtual bool isCompatibleWithSymbol (QgsSymbol *symbol) const
 Returns if the layer can be used below the specified symbol. More...
 
bool isLocked () const
 
virtual QString layerType () const =0
 Returns a string that represents this layer type. More...
 
virtual QString ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const
 
QgsPaintEffectpaintEffect () 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 QgsStringMap 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
 
virtual void setColor (const QColor &color)
 The fill color. 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)
 Set fill color. More...
 
void setLocked (bool locked)
 
void setPaintEffect (QgsPaintEffect *effect)
 Sets the current paint effect for the layer. More...
 
void setRenderingPass (int renderingPass)
 
virtual void setStrokeColor (const QColor &color)
 Set stroke color. More...
 
virtual bool setSubSymbol (QgsSymbol *symbol)
 Sets layer's subsymbol. takes ownership of the passed symbol. More...
 
virtual void startRender (QgsSymbolRenderContext &context)=0
 
virtual void stopRender (QgsSymbolRenderContext &context)=0
 
virtual QColor strokeColor () const
 Gets stroke color. More...
 
virtual QgsSymbolsubSymbol ()
 Returns the symbol's sub symbol, if present. More...
 
virtual void toSld (QDomDocument &doc, QDomElement &element, const QgsStringMap &props) const
 
QgsSymbol::SymbolType type () const
 
virtual QSet< QString > usedAttributes (const QgsRenderContext &context) const
 Returns the set of attributes referenced by the layer. 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...
 

Protected Member Functions

 QgsLineSymbolLayer (bool locked=false)
 
- Protected Member Functions inherited from QgsSymbolLayer
 QgsSymbolLayer (QgsSymbol::SymbolType type, bool locked=false)
 
void copyDataDefinedProperties (QgsSymbolLayer *destLayer) const
 Copies all data defined properties of this layer to another symbol layer. More...
 
void copyPaintEffect (QgsSymbolLayer *destLayer) const
 Copies paint effect of this layer to another symbol layer. More...
 
void restoreOldDataDefinedProperties (const QgsStringMap &stringMap)
 Restores older data defined properties from string map. More...
 

Protected Attributes

double mOffset = 0
 
QgsMapUnitScale mOffsetMapUnitScale
 
QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters
 
double mWidth = 0
 
QgsMapUnitScale mWidthMapUnitScale
 
QgsUnitTypes::RenderUnit mWidthUnit = QgsUnitTypes::RenderMillimeters
 
- Protected Attributes inherited from QgsSymbolLayer
QColor mColor
 
QgsPropertyCollection mDataDefinedProperties
 
bool mEnabled
 True if layer is enabled and should be drawn. More...
 
QgsFields mFields
 
bool mLocked
 
QgsPaintEffectmPaintEffect = nullptr
 
int mRenderingPass
 
QgsSymbol::SymbolType mType
 

Additional Inherited Members

- Public Types inherited from QgsSymbolLayer
enum  Property {
  PropertySize = 0, PropertyAngle, PropertyName, PropertyFillColor,
  PropertyStrokeColor, PropertyStrokeWidth, PropertyStrokeStyle, PropertyOffset,
  PropertyCharacter, PropertyWidth, PropertyHeight, PropertyPreserveAspectRatio,
  PropertyFillStyle, PropertyJoinStyle, PropertySecondaryColor, PropertyLineAngle,
  PropertyLineDistance, PropertyGradientType, PropertyCoordinateMode, PropertyGradientSpread,
  PropertyGradientReference1X, PropertyGradientReference1Y, PropertyGradientReference2X, PropertyGradientReference2Y,
  PropertyGradientReference1IsCentroid, PropertyGradientReference2IsCentroid, PropertyBlurRadius, PropertyShapeburstUseWholeShape,
  PropertyShapeburstMaxDistance, PropertyShapeburstIgnoreRings, PropertyFile, PropertyDistanceX,
  PropertyDistanceY, PropertyDisplacementX, PropertyDisplacementY, PropertyOpacity,
  PropertyCustomDash, PropertyCapStyle, PropertyPlacement, PropertyInterval,
  PropertyOffsetAlongLine, PropertyHorizontalAnchor, PropertyVerticalAnchor, PropertyLayerEnabled,
  PropertyArrowWidth, PropertyArrowStartWidth, PropertyArrowHeadLength, PropertyArrowHeadThickness,
  PropertyArrowHeadType, PropertyArrowType
}
 Data definable properties. More...
 
- Static Public Member Functions inherited from QgsSymbolLayer
static const QgsPropertiesDefinitionpropertyDefinitions ()
 Returns the symbol layer property definitions. More...
 
- Static Protected Attributes inherited from QgsSymbolLayer
static const bool SELECT_FILL_BORDER = false
 Whether fill styles for selected features also highlight symbol stroke. More...
 
static const bool SELECT_FILL_STYLE = false
 Whether fill styles for selected features uses symbol layer style. More...
 
static const bool SELECTION_IS_OPAQUE = true
 Whether styles for selected features ignore symbol alpha. More...
 

Detailed Description

Definition at line 764 of file qgssymbollayer.h.

Constructor & Destructor Documentation

◆ QgsLineSymbolLayer()

QgsLineSymbolLayer::QgsLineSymbolLayer ( bool  locked = false)
protected

Definition at line 389 of file qgssymbollayer.cpp.

Member Function Documentation

◆ drawPreviewIcon()

void QgsLineSymbolLayer::drawPreviewIcon ( QgsSymbolRenderContext context,
QSize  size 
)
overridevirtual

Implements QgsSymbolLayer.

Definition at line 589 of file qgssymbollayer.cpp.

◆ dxfWidth()

double QgsLineSymbolLayer::dxfWidth ( const QgsDxfExport e,
QgsSymbolRenderContext context 
) const
overridevirtual

Gets line width.

Reimplemented from QgsSymbolLayer.

Definition at line 620 of file qgssymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsLineSymbolLayer::mapUnitScale ( ) const
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 583 of file qgssymbollayer.cpp.

◆ offset()

double QgsLineSymbolLayer::offset ( ) const
inline

Definition at line 774 of file qgssymbollayer.h.

◆ offsetMapUnitScale()

const QgsMapUnitScale& QgsLineSymbolLayer::offsetMapUnitScale ( ) const
inline

Definition at line 807 of file qgssymbollayer.h.

◆ offsetUnit()

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::offsetUnit ( ) const
inline

Returns the units for the line's offset.

See also
setOffsetUnit()

Definition at line 804 of file qgssymbollayer.h.

◆ outputUnit()

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::outputUnit ( ) const
overridevirtual

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.

Returns
output unit, or QgsUnitTypes::RenderUnknownUnit if the symbol layer contains mixed units
See also
setOutputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 573 of file qgssymbollayer.cpp.

◆ renderPolygonStroke()

void QgsLineSymbolLayer::renderPolygonStroke ( const QPolygonF &  points,
QList< QPolygonF > *  rings,
QgsSymbolRenderContext context 
)
virtual

Reimplemented in QgsMarkerLineSymbolLayer, and QgsSimpleLineSymbolLayer.

Definition at line 610 of file qgssymbollayer.cpp.

◆ renderPolyline()

virtual void QgsLineSymbolLayer::renderPolyline ( const QPolygonF &  points,
QgsSymbolRenderContext context 
)
pure virtual

◆ setMapUnitScale()

void QgsLineSymbolLayer::setMapUnitScale ( const QgsMapUnitScale scale)
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 578 of file qgssymbollayer.cpp.

◆ setOffset()

void QgsLineSymbolLayer::setOffset ( double  offset)
inline

Definition at line 775 of file qgssymbollayer.h.

◆ setOffsetMapUnitScale()

void QgsLineSymbolLayer::setOffsetMapUnitScale ( const QgsMapUnitScale scale)
inline

Definition at line 806 of file qgssymbollayer.h.

◆ setOffsetUnit()

void QgsLineSymbolLayer::setOffsetUnit ( QgsUnitTypes::RenderUnit  unit)
inline

Sets the units for the line's offset.

Parameters
unitoffset units
See also
offsetUnit()

Definition at line 798 of file qgssymbollayer.h.

◆ setOutputUnit()

void QgsLineSymbolLayer::setOutputUnit ( QgsUnitTypes::RenderUnit  unit)
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.

Parameters
unitoutput units
See also
outputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 568 of file qgssymbollayer.cpp.

◆ setWidth()

virtual void QgsLineSymbolLayer::setWidth ( double  width)
inlinevirtual

Reimplemented in QgsMarkerLineSymbolLayer.

Definition at line 771 of file qgssymbollayer.h.

◆ setWidthMapUnitScale()

void QgsLineSymbolLayer::setWidthMapUnitScale ( const QgsMapUnitScale scale)
inline

Definition at line 790 of file qgssymbollayer.h.

◆ setWidthUnit()

void QgsLineSymbolLayer::setWidthUnit ( QgsUnitTypes::RenderUnit  unit)
inline

Sets the units for the line's width.

Parameters
unitwidth units
See also
widthUnit()

Definition at line 782 of file qgssymbollayer.h.

◆ width()

virtual double QgsLineSymbolLayer::width ( ) const
inlinevirtual

Reimplemented in QgsMarkerLineSymbolLayer.

Definition at line 772 of file qgssymbollayer.h.

◆ widthMapUnitScale()

const QgsMapUnitScale& QgsLineSymbolLayer::widthMapUnitScale ( ) const
inline

Definition at line 791 of file qgssymbollayer.h.

◆ widthUnit()

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::widthUnit ( ) const
inline

Returns the units for the line's width.

See also
setWidthUnit()

Definition at line 788 of file qgssymbollayer.h.

Member Data Documentation

◆ mOffset

double QgsLineSymbolLayer::mOffset = 0
protected

Definition at line 825 of file qgssymbollayer.h.

◆ mOffsetMapUnitScale

QgsMapUnitScale QgsLineSymbolLayer::mOffsetMapUnitScale
protected

Definition at line 827 of file qgssymbollayer.h.

◆ mOffsetUnit

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::mOffsetUnit = QgsUnitTypes::RenderMillimeters
protected

Definition at line 826 of file qgssymbollayer.h.

◆ mWidth

double QgsLineSymbolLayer::mWidth = 0
protected

Definition at line 822 of file qgssymbollayer.h.

◆ mWidthMapUnitScale

QgsMapUnitScale QgsLineSymbolLayer::mWidthMapUnitScale
protected

Definition at line 824 of file qgssymbollayer.h.

◆ mWidthUnit

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::mWidthUnit = QgsUnitTypes::RenderMillimeters
protected

Definition at line 823 of file qgssymbollayer.h.


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