ImageEvent

图片事件。

关键属性

image: ILeaferImage

原始图片封装对象。

error: string | object

图片加载错误信息。

辅助属性

用于区分图形内使用多个图案填充的情况。

attrName: string

图案填充的属性名: fill | stroke

attrValue: ImagePaint

图案填充的属性值。

事件名称

ImageEvent.LOAD

图片开始加载。

image.load

ImageEvent.LOADED

图片加载完成。

image.loaded

ImageEvent.ERROR

图片加载失败。

image.error

继承事件

Event

示例

监听 Image 的图片加载

image.ts

import { Leafer, Image, ImageEvent } from 'leafer-ui'

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

const image = new Image({
    url: '/image/leafer.jpg',
    draggable: true
})

image.once(ImageEvent.LOADED, function (e: ImageEvent) {
    console.log(e)
})

leafer.add(image)

image.js

import { Leafer, Image, ImageEvent } from 'leafer-ui'

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

const image = new Image({
    url: '/image/leafer.jpg',
    draggable: true
})

image.once(ImageEvent.LOADED, function (e) {
    console.log(e)
})

leafer.add(image)

监听 fill 中的图片加载

rect.ts

import { Leafer, Rect, ImageEvent } from 'leafer-ui'

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

const rect = new Rect({
    fill: { type: 'image', url: '/image/leafer.jpg' },
    draggable: true
})

rect.once(ImageEvent.LOADED, function (e: ImageEvent) {
    console.log(e)
})

leafer.add(rect)

rect.js

import { Leafer, Rect, ImageEvent } from 'leafer-ui'

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

const rect = new Rect({
    fill: { type: 'image', url: '/image/leafer.jpg' },
    draggable: true
})

rect.once(ImageEvent.LOADED, function (e) {
    console.log(e)
})

leafer.add(rect)

监听错误

error.ts

import { Leafer, Image, ImageEvent } from 'leafer-ui'

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

const image = new Image({
    url: '/image/leafer.jpg',
    draggable: true
})

image.once(ImageEvent.ERROR, function (e: ImageEvent) {
    console.log(e.error)
})

leafer.add(image)

error.js

import { Leafer, Image, ImageEvent } from 'leafer-ui'

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

const image = new Image({
    url: '/image/leafer.jpg',
    draggable: true
})

image.once(ImageEvent.ERROR, function (e) {
    console.log(e.error)
})

leafer.add(image)