Subgroup: Line

Class: QgsLineSymbol¶

class qgis.core.QgsLineSymbol(layers: object = QgsSymbolLayerList())¶

Bases: qgis._core.QgsSymbol

Methods

appendSymbolLayer Append symbol layer at the end of the list Ownership will be transferred.

asImage Generate symbol as image

bigSymbolPreviewImage Returns a large (roughly 100x100 pixel) preview image for the symbol.

changeSymbolLayer delete layer at specified index and set a new one

clipFeaturesToExtent Returns whether features drawn by the symbol will be clipped to the render context’s extent.

clone

cloneLayers

color

createSimple Create a line symbol with one symbol layer: SimpleLine with specified properties.

dataDefinedWidth Returns data defined width for whole symbol (including all symbol layers).

defaultSymbol return new default symbol for specified geometry type

deleteSymbolLayer delete symbol layer at specified index

drawPreviewIcon Draw icon of the symbol that occupyies area given by size using the painter.

dump

exportImage export symbol as image format. PNG and SVG supported

hasDataDefinedProperties Returns whether the symbol utilizes any data defined properties.

insertSymbolLayer Insert symbol layer to specified index Ownership will be transferred.

layer

mapUnitScale

opacity Returns the opacity for the symbol.

outputUnit Returns the units to use for sizes and widths within the symbol.

renderFeature Render a feature.

renderHints Returns the rendering hint flags for the symbol.

renderPolyline

renderUsingLayer

renderVertexMarker

setClipFeaturesToExtent Sets whether features drawn by the symbol should be clipped to the render context’s extent.

setColor

setDataDefinedWidth Set data defined width for whole symbol (including all symbol layers).

setLayer

setMapUnitScale

setOpacity Sets the opacity for the symbol.

setOutputUnit Sets the units to use for sizes and widths within the symbol.

setRenderHints Sets rendering hint flags for the symbol.

setWidth

startRender Begins the rendering process for the symbol.

stopRender Ends the rendering process.

symbolLayer Returns a specific symbol layers contained in the symbol.

symbolLayerCount Returns total number of symbol layers contained in the symbol.

symbolLayers Returns list of symbol layers contained in the symbol.

symbolRenderContext Returns the symbol render context.

takeSymbolLayer Remove symbol layer from the list and return pointer to it.

toSld

type

usedAttributes Return a list of attributes required to render this feature.

width

Attributes

DynamicRotation

Fill

Hybrid

Line

Marker

ScaleArea

ScaleDiameter

clone(self) → QgsLineSymbol¶

cloneLayers()¶

createSimple(properties: Dict[str, str]) → QgsLineSymbol¶: Create a line symbol with one symbol layer: SimpleLine with specified properties. This is a convenience method for easier creation of line symbols.

dataDefinedWidth(self) → QgsProperty¶

Returns data defined width for whole symbol (including all symbol layers).

Returns:	data defined width, or invalid property if size is not set

at the line level. Caller takes responsibility for deleting the returned object.

New in version 3.0.