Class: QgsSimpleLineCallout¶

A simple direct line callout style.

Added in version 3.10.

Class Hierarchy¶

Base classes¶

QgsCallout

Abstract base class for callout renderers.

Subclasses¶

`QgsCurvedLineCallout`	Draws curved lines as callouts.
`QgsManhattanLineCallout`	Draws straight (right angled) lines as callouts.

Methods

`drawCalloutToAllParts`	Returns `True` if callout lines should be drawn to all feature parts.
`lineSymbol`	Returns the line symbol used to render the callout line.
`minimumLength`	Returns the minimum length of callout lines.
`minimumLengthMapUnitScale`	Returns the map unit scale for the minimum callout length.
`minimumLengthUnit`	Returns the units for the minimum length of callout lines.
`offsetFromAnchor`	Returns the offset distance from the anchor point at which to start the line.
`offsetFromAnchorMapUnitScale`	Returns the map unit scale for the offset from anchor.
`offsetFromAnchorUnit`	Returns the units for the offset from anchor point.
`offsetFromLabel`	Returns the offset distance from label area at which to end the line.
`offsetFromLabelMapUnitScale`	Returns the map unit scale for the minimum callout length.
`offsetFromLabelUnit`	Returns the units for the offset from label area.
`setDrawCalloutToAllParts`	Sets whether callout lines should be drawn to all feature parts.
`setLineSymbol`	Sets the line symbol used to render the callout line.
`setMinimumLength`	Sets the minimum length of callout lines.
`setMinimumLengthMapUnitScale`	Sets the map unit scale for the minimum callout length.
`setMinimumLengthUnit`	Sets the unit for the minimum length of callout lines.
`setOffsetFromAnchor`	Sets the offset distance from the anchor point at which to start the line.
`setOffsetFromAnchorMapUnitScale`	Sets the map unit scale for the offset from anchor.
`setOffsetFromAnchorUnit`	Sets the unit for the offset from anchor distance.
`setOffsetFromLabel`	Sets the offset distance from label area at which to end the line.
`setOffsetFromLabelMapUnitScale`	Sets the map unit scale for the offset from label area.
`setOffsetFromLabelUnit`	Sets the unit for the offset from label area distance.

Virtual Methods

In PyQGIS, only methods marked as virtual can be safely overridden in a Python subclass of QgsSimpleLineCallout. See the FAQ for more details.

createCalloutLine

Creates a callout line between start and end in the desired style.

Static Methods

create

Creates a new QgsSimpleLineCallout, using the settings serialized in the properties map (corresponding to the output from QgsSimpleLineCallout.properties() ).

class qgis.core.QgsSimpleLineCallout[source]¶

Bases: QgsCallout

static create(properties: Dict[str, Any] = {}, context: QgsReadWriteContext = QgsReadWriteContext()) → QgsCallout | None[source]¶

Creates a new QgsSimpleLineCallout, using the settings serialized in the properties map (corresponding to the output from QgsSimpleLineCallout.properties() ).

Parameters:

properties (Dict[str, Any] = {})
context (QgsReadWriteContext = QgsReadWriteContext())

Return type:

Optional[QgsCallout]

virtual createCalloutLine(self, start: QgsPoint, end: QgsPoint, context: QgsRenderContext, bodyBoundingBox: QRectF, angle: float, anchor: QgsGeometry, calloutContext: QgsCallout.QgsCalloutContext) → QgsCurve | None[source]¶