leafer

The Leafer engine instance that the element belongs to.

Read-only Properties

leafer: Leafer

The Leafer engine instance that the element belongs to.

app: App | Leafer

The App instance (root application) that the element belongs to. If not in an App structure, it will be a Leafer instance.

isLeafer: boolean

Whether the element is a Leafer engine.

leaferIsCreated: boolean

Whether the Leafer engine and its children have been created (initial creation completed).

leaferIsReady: boolean

Whether the Leafer engine is ready (initial layout completed).

zoomLayer: Group

The Leafer engine’s zoom/pan viewport layer.

Helper Method

waitLeafer ( item: function, bind?: object )

Wait until the element has the leafer property, then execute the item callback. You can bind this via the bind parameter.

If it already exists, it will be executed immediately.

Belongs to

UI Element

Example

Execute callback when element is added to the engine

Leafer

// #等待元素被添加到引擎中时，执行回调 (Leafer)
import { Leafer, Rect } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const rect = new Rect({ fill: '#32cd79' })

rect.waitLeafer(() => {
    rect.draggable = true
})

leafer.add(rect)

App

// #等待元素被添加到引擎中时，执行回调 (App)
import { App, Rect } from 'leafer-ui'
import '@leafer-in/editor' // 导入图形编辑器插件
import '@leafer-in/viewport' // 导入视口插件 (可选)

const app = new App({ view: window, editor: {} })

const rect = new Rect({ fill: '#32cd79' })

rect.waitLeafer(() => {
    rect.draggable = true
})

app.tree.add(rect)