Subgroup: other
Class: QgsArrowSymbolLayer¶
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class
qgis.core.
QgsArrowSymbolLayer
¶ Bases:
qgis._core.QgsLineSymbolLayer
Simple constructor
Line symbol layer used for representing lines as arrows.New in version 2.16: Methods
arrowStartWidth
Get current arrow start width. arrowStartWidthUnit
Get the unit for the arrow start width arrowStartWidthUnitScale
Get the scale for the arrow start width arrowType
Get the current arrow type arrowWidth
Get current arrow width arrowWidthUnit
Get the unit for the arrow width arrowWidthUnitScale
Get the scale for the arrow width clone
color
copyDataDefinedProperties
copyPaintEffect
create
Create a new QgsArrowSymbolLayer headLength
Get the current arrow head length headLengthUnit
Get the unit for the head length headLengthUnitScale
Get the scale for the head length headThickness
Get the current arrow head height headThicknessUnit
Get the unit for the head height headThicknessUnitScale
Get the scale for the head height headType
Get the current head type isCurved
Return whether it is a curved arrow or a straight one isRepeated
Return whether the arrow is repeated along the line or not layerType
properties
renderPolyline
restoreOldDataDefinedProperties
setArrowStartWidth
Set the arrow start width setArrowStartWidthUnit
Set the unit for the arrow start width setArrowStartWidthUnitScale
Set the scale for the arrow start width setArrowType
Set the arrow type setArrowWidth
Set the arrow width setArrowWidthUnit
Set the unit for the arrow width setArrowWidthUnitScale
Set the scale for the arrow width setColor
setHeadLength
Set the arrow head length setHeadLengthUnit
Set the unit for the head length setHeadLengthUnitScale
Set the scale for the head length setHeadThickness
Set the arrow head height setHeadThicknessUnit
Set the unit for the head height setHeadThicknessUnitScale
Set the scale for the head height setHeadType
Set the head type setIsCurved
Set whether it is a curved arrow or a straight one setIsRepeated
Set whether the arrow is repeated along the line setSubSymbol
startRender
stopRender
subSymbol
usedAttributes
Signals
Attributes
ArrowLeftHalf
ArrowPlain
ArrowRightHalf
HeadDouble
HeadReversed
HeadSingle
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ArrowLeftHalf
= 1¶
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ArrowPlain
= 0¶
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ArrowRightHalf
= 2¶
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class
ArrowType
¶ Bases:
int
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HeadDouble
= 2¶
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HeadReversed
= 1¶
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HeadSingle
= 0¶
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class
HeadType
¶ Bases:
int
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arrowStartWidth
(self) → float¶ Get current arrow start width. Only meaningful for single headed arrows
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arrowStartWidthUnit
(self) → QgsUnitTypes.RenderUnit¶ Get the unit for the arrow start width
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arrowStartWidthUnitScale
(self) → QgsMapUnitScale¶ Get the scale for the arrow start width
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arrowType
(self) → QgsArrowSymbolLayer.ArrowType¶ Get the current arrow type
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arrowWidth
(self) → float¶ Get current arrow width
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arrowWidthUnit
(self) → QgsUnitTypes.RenderUnit¶ Get the unit for the arrow width
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arrowWidthUnitScale
(self) → QgsMapUnitScale¶ Get the scale for the arrow width
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clone
(self) → QgsArrowSymbolLayer¶
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color
(self) → QColor¶
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copyDataDefinedProperties
()¶
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copyPaintEffect
()¶
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create
(properties: Dict[str, str] = {}) → QgsSymbolLayer¶ Create a new QgsArrowSymbolLayer
Parameters: properties – A property map to deserialize saved information from properties() Returns: A new QgsArrowSymbolLayer
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headLength
(self) → float¶ Get the current arrow head length
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headLengthUnit
(self) → QgsUnitTypes.RenderUnit¶ Get the unit for the head length
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headLengthUnitScale
(self) → QgsMapUnitScale¶ Get the scale for the head length
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headThickness
(self) → float¶ Get the current arrow head height
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headThicknessUnit
(self) → QgsUnitTypes.RenderUnit¶ Get the unit for the head height
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headThicknessUnitScale
(self) → QgsMapUnitScale¶ Get the scale for the head height
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headType
(self) → QgsArrowSymbolLayer.HeadType¶ Get the current head type
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isCurved
(self) → bool¶ Return whether it is a curved arrow or a straight one
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isRepeated
(self) → bool¶ Return whether the arrow is repeated along the line or not
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layerType
(self) → str¶
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properties
(self) → Dict[str, str]¶
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renderPolyline
(self, points: QPolygonF, context: QgsSymbolRenderContext)¶
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restoreOldDataDefinedProperties
()¶
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setArrowStartWidth
(self, width: float)¶ Set the arrow start width
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setArrowStartWidthUnit
(self, unit: QgsUnitTypes.RenderUnit)¶ Set the unit for the arrow start width
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setArrowStartWidthUnitScale
(self, scale: QgsMapUnitScale)¶ Set the scale for the arrow start width
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setArrowType
(self, type: QgsArrowSymbolLayer.ArrowType)¶ Set the arrow type
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setArrowWidth
(self, width: float)¶ Set the arrow width
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setArrowWidthUnit
(self, unit: QgsUnitTypes.RenderUnit)¶ Set the unit for the arrow width
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setArrowWidthUnitScale
(self, scale: QgsMapUnitScale)¶ Set the scale for the arrow width
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setColor
(self, c: Union[QColor, Qt.GlobalColor])¶
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setHeadLength
(self, length: float)¶ Set the arrow head length
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setHeadLengthUnit
(self, unit: QgsUnitTypes.RenderUnit)¶ Set the unit for the head length
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setHeadLengthUnitScale
(self, scale: QgsMapUnitScale)¶ Set the scale for the head length
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setHeadThickness
(self, thickness: float)¶ Set the arrow head height
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setHeadThicknessUnit
(self, unit: QgsUnitTypes.RenderUnit)¶ Set the unit for the head height
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setHeadThicknessUnitScale
(self, scale: QgsMapUnitScale)¶ Set the scale for the head height
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setHeadType
(self, type: QgsArrowSymbolLayer.HeadType)¶ Set the head type
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setIsCurved
(self, isCurved: bool)¶ Set whether it is a curved arrow or a straight one
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setIsRepeated
(self, isRepeated: bool)¶ Set whether the arrow is repeated along the line
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setSubSymbol
(self, symbol: QgsSymbol) → bool¶
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startRender
(self, context: QgsSymbolRenderContext)¶
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stopRender
(self, context: QgsSymbolRenderContext)¶
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subSymbol
(self) → QgsSymbol¶
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usedAttributes
(self, context: QgsRenderContext) → Set[str]¶
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