QGIS API Documentation  3.21.0-Master (56b4176581)
Public Types | Public Member Functions | Static Public Member Functions | Protected Attributes | List of all members
QgsGradientFillSymbolLayer Class Reference

#include <qgsfillsymbollayer.h>

Inheritance diagram for QgsGradientFillSymbolLayer:
Inheritance graph
[legend]

Public Types

enum  GradientColorType { SimpleTwoColor , ColorRamp }
 
enum  GradientCoordinateMode { Feature , Viewport }
 
enum  GradientSpread { Pad , Reflect , Repeat }
 
enum  GradientType { Linear , Radial , Conical }
 
- 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 , PropertyAverageAngleLength , PropertyHorizontalAnchor , PropertyVerticalAnchor ,
  PropertyLayerEnabled , PropertyArrowWidth , PropertyArrowStartWidth , PropertyArrowHeadLength ,
  PropertyArrowHeadThickness , PropertyArrowHeadType , PropertyArrowType , PropertyOffsetX ,
  PropertyOffsetY , PropertyPointCount , PropertyRandomSeed , PropertyClipPoints ,
  PropertyDensityArea , PropertyFontFamily , PropertyFontStyle , PropertyDashPatternOffset ,
  PropertyTrimStart , PropertyTrimEnd , PropertyLineStartWidthValue , PropertyLineEndWidthValue ,
  PropertyLineStartColorValue , PropertyLineEndColorValue
}
 Data definable properties. More...
 

Public Member Functions

 QgsGradientFillSymbolLayer (const QColor &color=DEFAULT_SIMPLEFILL_COLOR, const QColor &color2=Qt::white, GradientColorType gradientColorType=SimpleTwoColor, GradientType gradientType=Linear, GradientCoordinateMode coordinateMode=Feature, GradientSpread gradientSpread=Pad)
 
 ~QgsGradientFillSymbolLayer () 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...
 
QgsGradientFillSymbolLayerclone () const override
 Shall be reimplemented by subclasses to create a deep copy of the instance. More...
 
QColor color2 () const
 Color for endpoint of gradient, only used if the gradient color type is set to SimpleTwoColor. More...
 
QgsColorRampcolorRamp ()
 Returns the color ramp used for the gradient fill. More...
 
GradientCoordinateMode coordinateMode () const
 Coordinate mode for gradient. Controls how the gradient stops are positioned. More...
 
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. More...
 
GradientColorType gradientColorType () const
 Gradient color mode, controls how gradient color stops are created. More...
 
GradientSpread gradientSpread () const
 Gradient spread mode. Controls how the gradient behaves outside of the predefined stops. More...
 
GradientType gradientType () const
 Type of gradient, e.g., linear or radial. More...
 
QString layerType () const override
 Returns a string that represents this layer type. More...
 
QgsMapUnitScale mapUnitScale () const override
 
QPointF offset () const
 Returns the offset by which polygons will be translated during rendering. More...
 
const QgsMapUnitScaleoffsetMapUnitScale () const
 Returns the map unit scale for the fill's offset. More...
 
QgsUnitTypes::RenderUnit offsetUnit () const
 Returns the units for the fill's offset. More...
 
QgsUnitTypes::RenderUnit outputUnit () const override
 Returns the units to use for sizes and widths within the symbol layer. More...
 
QVariantMap properties () const override
 Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. More...
 
QPointF referencePoint1 () const
 
bool referencePoint1IsCentroid () const
 
QPointF referencePoint2 () const
 
bool referencePoint2IsCentroid () const
 
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 setColor2 (const QColor &color2)
 
void setColorRamp (QgsColorRamp *ramp)
 Sets the color ramp used for the gradient fill. More...
 
void setCoordinateMode (GradientCoordinateMode coordinateMode)
 
void setGradientColorType (GradientColorType gradientColorType)
 
void setGradientSpread (GradientSpread gradientSpread)
 
void setGradientType (GradientType gradientType)
 
void setMapUnitScale (const QgsMapUnitScale &scale) override
 
void setOffset (QPointF offset)
 Sets an offset by which polygons will be translated during rendering. More...
 
void setOffsetMapUnitScale (const QgsMapUnitScale &scale)
 Sets the map unit scale for the fill's offset. More...
 
void setOffsetUnit (QgsUnitTypes::RenderUnit unit)
 Sets the unit for the fill's offset. More...
 
void setOutputUnit (QgsUnitTypes::RenderUnit unit) override
 Sets the units to use for sizes and widths within the symbol layer. More...
 
void setReferencePoint1 (QPointF referencePoint)
 Starting point of gradient fill, in the range [0,0] - [1,1]. More...
 
void setReferencePoint1IsCentroid (bool isCentroid)
 Sets the starting point of the gradient to be the feature centroid. More...
 
void setReferencePoint2 (QPointF referencePoint)
 End point of gradient fill, in the range [0,0] - [1,1]. More...
 
void setReferencePoint2IsCentroid (bool isCentroid)
 Sets the end point of the gradient to be the feature centroid. More...
 
void startRender (QgsSymbolRenderContext &context) override
 Called before a set of rendering operations commences on the supplied render context. More...
 
void stopRender (QgsSymbolRenderContext &context) override
 Called after a set of rendering operations has finished on the supplied render context. More...
 
bool usesMapUnits () const override
 Returns true if the symbol layer has any components which use map unit based sizes. More...
 
- Public Member Functions inherited from QgsFillSymbolLayer
 QgsFillSymbolLayer (const QgsFillSymbolLayer &other)=delete
 QgsFillSymbolLayer cannot be copied. More...
 
double angle () const
 
void drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override
 
QgsFillSymbolLayeroperator= (const QgsFillSymbolLayer &other)=delete
 QgsFillSymbolLayer cannot be copied. More...
 
void setAngle (double angle)
 
- Public Member Functions inherited from QgsSymbolLayer
 QgsSymbolLayer (const QgsSymbolLayer &other)=delete
 QgsSymbolLayer cannot be copied. More...
 
virtual ~QgsSymbolLayer ()
 
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...
 
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 QColor fillColor () const
 Gets fill color. 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...
 
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 QList< QgsSymbolLayerReferencemasks () const
 Returns masks defined by this symbol layer. More...
 
virtual QString ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const
 
QgsSymbolLayeroperator= (const QgsSymbolLayer &other)=delete
 QgsSymbolLayer cannot be copied. More...
 
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...
 
int renderingPass () const
 Specifies the rendering pass in which this symbol layer should be rendered. More...
 
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)
 Sets whether the layer's colors are locked. 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)
 Set stroke color. 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 stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context)
 Called after the layer has been rendered for a particular feature. More...
 
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 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 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 QgsSymbolLayercreate (const QVariantMap &properties=QVariantMap())
 Creates a new QgsGradientFillSymbolLayer using the specified properties map containing symbol properties (see properties()). More...
 
- Static Public Member Functions inherited from QgsSymbolLayer
static const QgsPropertiesDefinitionpropertyDefinitions ()
 Returns the symbol layer property definitions. More...
 

Protected Attributes

QBrush mBrush
 
QColor mColor2
 
GradientCoordinateMode mCoordinateMode
 
GradientColorType mGradientColorType
 
QgsColorRampmGradientRamp = nullptr
 
GradientSpread mGradientSpread
 
GradientType mGradientType
 
QPointF mOffset
 
QgsMapUnitScale mOffsetMapUnitScale
 
QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters
 
QPointF mReferencePoint1
 
bool mReferencePoint1IsCentroid = false
 
QPointF mReferencePoint2
 
bool mReferencePoint2IsCentroid = false
 
QBrush mSelBrush
 
- Protected Attributes inherited from QgsFillSymbolLayer
double mAngle = 0.0
 
- Protected Attributes inherited from QgsSymbolLayer
QColor mColor
 
QgsPropertyCollection mDataDefinedProperties
 
bool mEnabled = true
 True if layer is enabled and should be drawn. More...
 
QgsFields mFields
 
bool mLocked = false
 
std::unique_ptr< QgsPaintEffectmPaintEffect
 
int mRenderingPass = 0
 
Qgis::SymbolType mType
 

Additional Inherited Members

- Protected Member Functions inherited from QgsFillSymbolLayer
 QgsFillSymbolLayer (bool locked=false)
 
void _renderPolygon (QPainter *p, const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)
 Default method to render polygon. More...
 
- Protected Member Functions inherited from QgsSymbolLayer
 QgsSymbolLayer (Qgis::SymbolType type, bool locked=false)
 Constructor for QgsSymbolLayer. More...
 
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 QVariantMap &stringMap)
 Restores older data defined properties from string map. 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 211 of file qgsfillsymbollayer.h.

Member Enumeration Documentation

◆ GradientColorType

Enumerator
SimpleTwoColor 
ColorRamp 

Definition at line 215 of file qgsfillsymbollayer.h.

◆ GradientCoordinateMode

Enumerator
Feature 
Viewport 

Definition at line 228 of file qgsfillsymbollayer.h.

◆ GradientSpread

Enumerator
Pad 
Reflect 
Repeat 

Definition at line 234 of file qgsfillsymbollayer.h.

◆ GradientType

Enumerator
Linear 
Radial 
Conical 

Definition at line 221 of file qgsfillsymbollayer.h.

Constructor & Destructor Documentation

◆ QgsGradientFillSymbolLayer()

QgsGradientFillSymbolLayer::QgsGradientFillSymbolLayer ( const QColor &  color = DEFAULT_SIMPLEFILL_COLOR,
const QColor &  color2 = Qt::white,
GradientColorType  gradientColorType = SimpleTwoColor,
GradientType  gradientType = Linear,
GradientCoordinateMode  coordinateMode = Feature,
GradientSpread  gradientSpread = Pad 
)

Definition at line 521 of file qgsfillsymbollayer.cpp.

◆ ~QgsGradientFillSymbolLayer()

QgsGradientFillSymbolLayer::~QgsGradientFillSymbolLayer ( )
override

Definition at line 535 of file qgsfillsymbollayer.cpp.

Member Function Documentation

◆ canCauseArtifactsBetweenAdjacentTiles()

bool QgsGradientFillSymbolLayer::canCauseArtifactsBetweenAdjacentTiles ( ) const
overridevirtual

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.

Since
QGIS 3.18

Reimplemented from QgsSymbolLayer.

Definition at line 999 of file qgsfillsymbollayer.cpp.

◆ clone()

QgsGradientFillSymbolLayer * QgsGradientFillSymbolLayer::clone ( ) const
overridevirtual

Shall be reimplemented by subclasses to create a deep copy of the instance.

Implements QgsSymbolLayer.

Definition at line 975 of file qgsfillsymbollayer.cpp.

◆ color2()

QColor QgsGradientFillSymbolLayer::color2 ( ) const
inline

Color for endpoint of gradient, only used if the gradient color type is set to SimpleTwoColor.

Definition at line 297 of file qgsfillsymbollayer.h.

◆ colorRamp()

QgsColorRamp* QgsGradientFillSymbolLayer::colorRamp ( )
inline

Returns the color ramp used for the gradient fill.

This is only used if the gradient color type is set to ColorRamp.

See also
setColorRamp()
gradientColorType()

Definition at line 285 of file qgsfillsymbollayer.h.

◆ coordinateMode()

GradientCoordinateMode QgsGradientFillSymbolLayer::coordinateMode ( ) const
inline

Coordinate mode for gradient. Controls how the gradient stops are positioned.

Definition at line 301 of file qgsfillsymbollayer.h.

◆ create()

QgsSymbolLayer * QgsGradientFillSymbolLayer::create ( const QVariantMap &  properties = QVariantMap())
static

Creates a new QgsGradientFillSymbolLayer using the specified properties map containing symbol properties (see properties()).

Caller takes ownership of the returned symbol layer.

Definition at line 540 of file qgsfillsymbollayer.cpp.

◆ estimateMaxBleed()

double QgsGradientFillSymbolLayer::estimateMaxBleed ( const QgsRenderContext context) const
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 993 of file qgsfillsymbollayer.cpp.

◆ gradientColorType()

GradientColorType QgsGradientFillSymbolLayer::gradientColorType ( ) const
inline

Gradient color mode, controls how gradient color stops are created.

Definition at line 276 of file qgsfillsymbollayer.h.

◆ gradientSpread()

GradientSpread QgsGradientFillSymbolLayer::gradientSpread ( ) const
inline

Gradient spread mode. Controls how the gradient behaves outside of the predefined stops.

Definition at line 305 of file qgsfillsymbollayer.h.

◆ gradientType()

GradientType QgsGradientFillSymbolLayer::gradientType ( ) const
inline

Type of gradient, e.g., linear or radial.

Definition at line 272 of file qgsfillsymbollayer.h.

◆ layerType()

QString QgsGradientFillSymbolLayer::layerType ( ) const
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 630 of file qgsfillsymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsGradientFillSymbolLayer::mapUnitScale ( ) const
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 1024 of file qgsfillsymbollayer.cpp.

◆ offset()

QPointF QgsGradientFillSymbolLayer::offset ( ) const
inline

Returns the offset by which polygons will be translated during rendering.

Units are specified by offsetUnit().

See also
setOffset()
offsetUnit()

Definition at line 342 of file qgsfillsymbollayer.h.

◆ offsetMapUnitScale()

const QgsMapUnitScale& QgsGradientFillSymbolLayer::offsetMapUnitScale ( ) const
inline

Returns the map unit scale for the fill's offset.

See also
offset()
setOffsetMapUnitScale()

Definition at line 370 of file qgsfillsymbollayer.h.

◆ offsetUnit()

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

Returns the units for the fill's offset.

See also
setOffsetUnit()
offset()

Definition at line 356 of file qgsfillsymbollayer.h.

◆ outputUnit()

QgsUnitTypes::RenderUnit QgsGradientFillSymbolLayer::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 1009 of file qgsfillsymbollayer.cpp.

◆ properties()

QVariantMap QgsGradientFillSymbolLayer::properties ( ) const
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 947 of file qgsfillsymbollayer.cpp.

◆ referencePoint1()

QPointF QgsGradientFillSymbolLayer::referencePoint1 ( ) const
inline

Definition at line 310 of file qgsfillsymbollayer.h.

◆ referencePoint1IsCentroid()

bool QgsGradientFillSymbolLayer::referencePoint1IsCentroid ( ) const
inline

Definition at line 314 of file qgsfillsymbollayer.h.

◆ referencePoint2()

QPointF QgsGradientFillSymbolLayer::referencePoint2 ( ) const
inline

Definition at line 318 of file qgsfillsymbollayer.h.

◆ referencePoint2IsCentroid()

bool QgsGradientFillSymbolLayer::referencePoint2IsCentroid ( ) const
inline

Definition at line 322 of file qgsfillsymbollayer.h.

◆ renderPolygon()

void QgsGradientFillSymbolLayer::renderPolygon ( const QPolygonF &  points,
const QVector< QPolygonF > *  rings,
QgsSymbolRenderContext context 
)
overridevirtual

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 908 of file qgsfillsymbollayer.cpp.

◆ setColor2()

void QgsGradientFillSymbolLayer::setColor2 ( const QColor &  color2)
inline

Definition at line 298 of file qgsfillsymbollayer.h.

◆ setColorRamp()

void QgsGradientFillSymbolLayer::setColorRamp ( QgsColorRamp ramp)

Sets the color ramp used for the gradient fill.

This is only used if the gradient color type is set to ColorRamp.

Parameters
rampcolor ramp. Ownership is transferred.
See also
colorRamp()
setGradientColorType()

Definition at line 624 of file qgsfillsymbollayer.cpp.

◆ setCoordinateMode()

void QgsGradientFillSymbolLayer::setCoordinateMode ( GradientCoordinateMode  coordinateMode)
inline

Definition at line 302 of file qgsfillsymbollayer.h.

◆ setGradientColorType()

void QgsGradientFillSymbolLayer::setGradientColorType ( GradientColorType  gradientColorType)
inline

Definition at line 277 of file qgsfillsymbollayer.h.

◆ setGradientSpread()

void QgsGradientFillSymbolLayer::setGradientSpread ( GradientSpread  gradientSpread)
inline

Definition at line 306 of file qgsfillsymbollayer.h.

◆ setGradientType()

void QgsGradientFillSymbolLayer::setGradientType ( GradientType  gradientType)
inline

Definition at line 273 of file qgsfillsymbollayer.h.

◆ setMapUnitScale()

void QgsGradientFillSymbolLayer::setMapUnitScale ( const QgsMapUnitScale scale)
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 1019 of file qgsfillsymbollayer.cpp.

◆ setOffset()

void QgsGradientFillSymbolLayer::setOffset ( QPointF  offset)
inline

Sets an offset by which polygons will be translated during rendering.

Units are specified by offsetUnit().

See also
offset()
setOffsetUnit()

Definition at line 332 of file qgsfillsymbollayer.h.

◆ setOffsetMapUnitScale()

void QgsGradientFillSymbolLayer::setOffsetMapUnitScale ( const QgsMapUnitScale scale)
inline

Sets the map unit scale for the fill's offset.

See also
setOffset()
offsetMapUnitScale()

Definition at line 363 of file qgsfillsymbollayer.h.

◆ setOffsetUnit()

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

Sets the unit for the fill's offset.

See also
offset()
offsetUnit()

Definition at line 349 of file qgsfillsymbollayer.h.

◆ setOutputUnit()

void QgsGradientFillSymbolLayer::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 1004 of file qgsfillsymbollayer.cpp.

◆ setReferencePoint1()

void QgsGradientFillSymbolLayer::setReferencePoint1 ( QPointF  referencePoint)
inline

Starting point of gradient fill, in the range [0,0] - [1,1].

Definition at line 309 of file qgsfillsymbollayer.h.

◆ setReferencePoint1IsCentroid()

void QgsGradientFillSymbolLayer::setReferencePoint1IsCentroid ( bool  isCentroid)
inline

Sets the starting point of the gradient to be the feature centroid.

Definition at line 313 of file qgsfillsymbollayer.h.

◆ setReferencePoint2()

void QgsGradientFillSymbolLayer::setReferencePoint2 ( QPointF  referencePoint)
inline

End point of gradient fill, in the range [0,0] - [1,1].

Definition at line 317 of file qgsfillsymbollayer.h.

◆ setReferencePoint2IsCentroid()

void QgsGradientFillSymbolLayer::setReferencePoint2IsCentroid ( bool  isCentroid)
inline

Sets the end point of the gradient to be the feature centroid.

Definition at line 321 of file qgsfillsymbollayer.h.

◆ startRender()

void QgsGradientFillSymbolLayer::startRender ( QgsSymbolRenderContext context)
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.

See also
startFeatureRender()
stopRender()

Implements QgsSymbolLayer.

Definition at line 895 of file qgsfillsymbollayer.cpp.

◆ stopRender()

void QgsGradientFillSymbolLayer::stopRender ( QgsSymbolRenderContext context)
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.

See also
startRender()
stopFeatureRender()

Implements QgsSymbolLayer.

Definition at line 903 of file qgsfillsymbollayer.cpp.

◆ usesMapUnits()

bool QgsGradientFillSymbolLayer::usesMapUnits ( ) const
overridevirtual

Returns true if the symbol layer has any components which use map unit based sizes.

Since
QGIS 3.18

Reimplemented from QgsSymbolLayer.

Definition at line 1014 of file qgsfillsymbollayer.cpp.

Member Data Documentation

◆ mBrush

QBrush QgsGradientFillSymbolLayer::mBrush
protected

Definition at line 380 of file qgsfillsymbollayer.h.

◆ mColor2

QColor QgsGradientFillSymbolLayer::mColor2
protected

Definition at line 384 of file qgsfillsymbollayer.h.

◆ mCoordinateMode

GradientCoordinateMode QgsGradientFillSymbolLayer::mCoordinateMode
protected

Definition at line 387 of file qgsfillsymbollayer.h.

◆ mGradientColorType

GradientColorType QgsGradientFillSymbolLayer::mGradientColorType
protected

Definition at line 383 of file qgsfillsymbollayer.h.

◆ mGradientRamp

QgsColorRamp* QgsGradientFillSymbolLayer::mGradientRamp = nullptr
protected

Definition at line 385 of file qgsfillsymbollayer.h.

◆ mGradientSpread

GradientSpread QgsGradientFillSymbolLayer::mGradientSpread
protected

Definition at line 388 of file qgsfillsymbollayer.h.

◆ mGradientType

GradientType QgsGradientFillSymbolLayer::mGradientType
protected

Definition at line 386 of file qgsfillsymbollayer.h.

◆ mOffset

QPointF QgsGradientFillSymbolLayer::mOffset
protected

Definition at line 395 of file qgsfillsymbollayer.h.

◆ mOffsetMapUnitScale

QgsMapUnitScale QgsGradientFillSymbolLayer::mOffsetMapUnitScale
protected

Definition at line 397 of file qgsfillsymbollayer.h.

◆ mOffsetUnit

QgsUnitTypes::RenderUnit QgsGradientFillSymbolLayer::mOffsetUnit = QgsUnitTypes::RenderMillimeters
protected

Definition at line 396 of file qgsfillsymbollayer.h.

◆ mReferencePoint1

QPointF QgsGradientFillSymbolLayer::mReferencePoint1
protected

Definition at line 390 of file qgsfillsymbollayer.h.

◆ mReferencePoint1IsCentroid

bool QgsGradientFillSymbolLayer::mReferencePoint1IsCentroid = false
protected

Definition at line 391 of file qgsfillsymbollayer.h.

◆ mReferencePoint2

QPointF QgsGradientFillSymbolLayer::mReferencePoint2
protected

Definition at line 392 of file qgsfillsymbollayer.h.

◆ mReferencePoint2IsCentroid

bool QgsGradientFillSymbolLayer::mReferencePoint2IsCentroid = false
protected

Definition at line 393 of file qgsfillsymbollayer.h.

◆ mSelBrush

QBrush QgsGradientFillSymbolLayer::mSelBrush
protected

Definition at line 381 of file qgsfillsymbollayer.h.


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