Class: QgsRendererWidget¶

Base class for renderer settings widgets.

WORKFLOW:

open renderer dialog with some RENDERER (never null!)
find out which widget to use
instantiate it and set in stacked widget
on any change of renderer type, create some default (dummy?) version and change the stacked widget
when clicked OK/Apply, get the renderer from active widget and clone it for the layer

Class Hierarchy¶

`QgsPanelWidget`	Base class for any widget that can be shown as a inline panel
QWidget
QObject
QPaintDevice
`QgsExpressionContextGenerator`	Abstract interface for generating an expression context.

`Qgs25DRendererWidget`	param layer: the layer where this renderer is applied :param style: :param renderer: the mask renderer (will not take ownership)
`QgsCategorizedSymbolRendererWidget`
`QgsEmbeddedSymbolRendererWidget`	A widget used represent options of a `QgsEmbeddedSymbolRenderer`
`QgsGraduatedSymbolRendererWidget`
`QgsHeatmapRendererWidget`	param layer: the layer where this renderer is applied :param style: :param renderer: the mask renderer (will not take ownership)
`QgsInvertedPolygonRendererWidget`	A widget used represent options of a `QgsInvertedPolygonRenderer`
`QgsMergedFeatureRendererWidget`	A widget used represent options of a `QgsMergedFeatureRenderer`
`QgsNullSymbolRendererWidget`	Blank widget for customizing `QgsNullSymbolRenderer`.
`QgsPointClusterRendererWidget`	A widget which allows configuration of the properties for a `QgsPointClusterRenderer`.
`QgsPointDisplacementRendererWidget`
`QgsRuleBasedRendererWidget`
`QgsSingleSymbolRendererWidget`

Methods

`apply`
`applyChanges`	This method should be called whenever the renderer is actually set on the layer.
`changeSymbolAngle`	Change marker angles of selected symbols
`changeSymbolColor`	Change color of selected symbols
`changeSymbolOpacity`	Change opacity of selected symbols
`changeSymbolSize`	Change marker sizes of selected symbols
`changeSymbolUnit`	Change units mm/map units of selected symbols
`changeSymbolWidth`	Change line widths of selected symbols
`context`	Returns the context in which the renderer widget is shown, e.g., the associated map canvas and expression contexts.
`contextMenuViewCategories`
`copy`
`createDataDefinedSizeLegendWidget`	Creates widget to setup data-defined size legend.
`paste`
`pasteSymbolToSelection`	Pastes the clipboard symbol over selected items.
`refreshSymbolView`
`registerDataDefinedButton`	Registers a data defined override button.
`renderer`	Returns pointer to the renderer (no transfer of ownership)
`selectedSymbols`	Subclasses may provide the capability of changing multiple symbols at once by implementing the following two methods and by connecting the slot contextMenuViewCategories(const QPoint&).
`setContext`	Sets the context in which the renderer widget is shown, e.g., the associated map canvas and expression contexts.
`setSymbolLevels`	Sets the symbol levels for the renderer defined in the widget.
`showSymbolLevelsDialog`	Show a dialog with renderer's symbol level settings.
`vectorLayer`	Returns the vector layer associated with the widget.

Signals

`layerVariablesChanged`	Emitted when expression context variables on the associated vector layers have been changed.
`symbolLevelsChanged`	Emitted when the symbol levels settings have been changed.

class qgis.gui.QgsRendererWidget[source]¶

Bases: QgsPanelWidget, QgsExpressionContextGenerator

applyChanges(self)[source]¶: This method should be called whenever the renderer is actually set on the layer.

changeSymbolAngle(self)[source]¶: Change marker angles of selected symbols

changeSymbolUnit(self)[source]¶: Change units mm/map units of selected symbols

Returns the context in which the renderer widget is shown, e.g., the associated map canvas and expression contexts.