Class: QgsLayoutItemRegistry¶

Registry of available layout item types.

QgsLayoutItemRegistry is not usually directly created, but rather accessed through QgsApplication.layoutItemRegistry().

A companion class, QgsLayoutItemGuiRegistry, handles the GUI behavior of layout items.

Class Hierarchy¶

Base classes¶

QObject

Methods

`addLayoutItemType`	Registers a new layout item type.
`addLayoutMultiFrameType`	Registers a new layout multiframe type.
`createItem`	Creates a new instance of a layout item given the item type, and target layout.
`createMultiFrame`	Creates a new instance of a layout multiframe given the multiframe type, and target layout.
`itemMetadata`	Returns the metadata for the specified item type.
`itemTypes`	Returns a map of available item types to translated name.
`multiFrameMetadata`	Returns the metadata for the specified multiframe type.
`populate`	Populates the registry with standard item types.
`removeLayoutItemType`	Unregisters a layout item type.
`removeLayoutMultiFrameType`	Unregisters a layout multiframe type.
`resolvePaths`	Resolve paths in properties of a particular symbol layer.

Signals

`multiFrameTypeAdded`	Emitted whenever a new multiframe type is added to the registry, with the specified type and visible name.
`multiFrameTypeRemoved`	Emitted whenever an multiframe type is removed from the registry with the specified type.
`typeAdded`	Emitted whenever a new item type is added to the registry, with the specified type and visible name.
`typeRemoved`	Emitted whenever an item type is removed from the registry with the specified type.

Attributes

`Layout3DMap`
`LayoutAttributeTable`
`LayoutChart`
`LayoutElevationProfile`
`LayoutFrame`
`LayoutGroup`
`LayoutHtml`
`LayoutItem`
`LayoutLabel`
`LayoutLegend`
`LayoutManualTable`
`LayoutMap`
`LayoutMarker`
`LayoutPage`
`LayoutPicture`
`LayoutPolygon`
`LayoutPolyline`
`LayoutScaleBar`
`LayoutShape`
`LayoutTextTable`
`PluginItem`

class qgis.core.QgsLayoutItemRegistry[source]¶

Bases: QObject

__init__(parent: QObject | None = None)

Creates a new empty item registry.

QgsLayoutItemRegistry is not usually directly created, but rather accessed through QgsApplication.layoutItemRegistry().

See also

populate()

Parameters:: parent (Optional[QObject] = None)

class ItemType¶: Bases: int

Layout3DMap = 65651¶

LayoutAttributeTable = 65649¶

LayoutChart = 65655¶

LayoutElevationProfile = 65654¶

LayoutFrame = 65647¶

LayoutGroup = 65637¶

LayoutHtml = 65648¶

LayoutItem = 65636¶

LayoutLabel = 65641¶

LayoutLegend = 65642¶

LayoutManualTable = 65652¶

LayoutMap = 65639¶

LayoutMarker = 65653¶

LayoutPage = 65638¶

LayoutPicture = 65640¶

LayoutPolygon = 65644¶

LayoutPolyline = 65645¶

LayoutScaleBar = 65646¶

LayoutShape = 65643¶

LayoutTextTable = 65650¶

PluginItem = 75650¶

addLayoutItemType(self, metadata: QgsLayoutItemAbstractMetadata | None) → bool[source]¶

Registers a new layout item type. Takes ownership of the metadata instance.

See also

addLayoutMultiFrameType()

Parameters:: metadata (Optional[QgsLayoutItemAbstractMetadata])
Return type:: bool

addLayoutMultiFrameType(self, metadata: QgsLayoutMultiFrameAbstractMetadata | None) → bool[source]¶

Registers a new layout multiframe type. Takes ownership of the metadata instance.

See also

addLayoutItemType()

Parameters:: metadata (Optional[QgsLayoutMultiFrameAbstractMetadata])
Return type:: bool

createItem(self, type: int, layout: QgsLayout | None) → QgsLayoutItem | None[source]¶

Creates a new instance of a layout item given the item type, and target layout.

See also

createMultiFrame()

Parameters:

type (int)
layout (Optional[QgsLayout])

Return type:

Optional[QgsLayoutItem]

createMultiFrame(self, type: int, layout: QgsLayout | None) → QgsLayoutMultiFrame | None[source]¶

Creates a new instance of a layout multiframe given the multiframe type, and target layout.

See also

createItem()

Parameters:

type (int)
layout (Optional[QgsLayout])

Return type:

Optional[QgsLayoutMultiFrame]

itemMetadata(self, type: int) → QgsLayoutItemAbstractMetadata | None[source]¶

Returns the metadata for the specified item type. Returns None if a corresponding type was not found in the registry.

See also

multiFrameMetadata()

Parameters:: type (int)
Return type:: Optional[QgsLayoutItemAbstractMetadata]

itemTypes(self) → Dict[int, str]¶

Returns a map of available item types to translated name.

Return type:: Dict[int, str]

multiFrameMetadata(self, type: int) → QgsLayoutMultiFrameAbstractMetadata | None[source]¶

Returns the metadata for the specified multiframe type. Returns None if a corresponding type was not found in the registry.

See also

itemMetadata()

Parameters:: type (int)
Return type:: Optional[QgsLayoutMultiFrameAbstractMetadata]

signal multiFrameTypeAdded(type: int, name: str)[source]¶

Emitted whenever a new multiframe type is added to the registry, with the specified type and visible name.

Parameters:

type (int)
name (str)

signal multiFrameTypeRemoved(type: int)[source]¶

Emitted whenever an multiframe type is removed from the registry with the specified type.

Added in version 4.0.

Parameters:: type (int)

populate(self) → bool[source]¶

Populates the registry with standard item types. If called on a non-empty registry then this will have no effect and will return False.

Return type:: bool

removeLayoutItemType(self, typeId: int) → bool[source]¶

Unregisters a layout item type.

Added in version 4.0.

Parameters:: typeId (int)
Return type:: bool

removeLayoutItemType(self, metadata: QgsLayoutItemAbstractMetadata | None) → bool[source]

Unregisters a layout item type.

The metadata object will be deleted and should not be used after this call.

Added in version 4.0.

Parameters:: metadata (Optional[QgsLayoutItemAbstractMetadata])
Return type:: bool

removeLayoutMultiFrameType(self, typeId: int) → bool[source]¶

Unregisters a layout multiframe type.

Added in version 4.0.

Parameters:: typeId (int)
Return type:: bool

removeLayoutMultiFrameType(self, metadata: QgsLayoutMultiFrameAbstractMetadata | None) → bool[source]

Unregisters a layout multiframe type.

The metadata object will be deleted and should not be used after this call.

Added in version 4.0.

Parameters:: metadata (Optional[QgsLayoutMultiFrameAbstractMetadata])
Return type:: bool

resolvePaths(self, type: int, properties: Dict[str, Any], pathResolver: QgsPathResolver, saving: bool)[source]¶

Resolve paths in properties of a particular symbol layer. This normally means converting relative paths to absolute paths when loading and converting absolute paths to relative paths when saving.

Parameters:

type (int)
properties (Dict[str, Any])
pathResolver (QgsPathResolver)
saving (bool)

signal typeAdded(type: int, name: str)[source]¶

Emitted whenever a new item type is added to the registry, with the specified type and visible name.

Parameters:

type (int)
name (str)

signal typeRemoved(type: int)[source]¶

Emitted whenever an item type is removed from the registry with the specified type.

Added in version 4.0.

Parameters:: type (int)