@leafer-draw/miniapp

Compared to @leafer-ui/miniapp, this package reduces features such as App and event interactions, making it suitable for pure drawing scenarios.

web version     worker version     node version     mini program version

Runs in a mini program environment. Learn about npm usage considerations in mini programs.

Installation

npm

npm install @leafer-draw/miniapp

pnpm

pnpm add @leafer-draw/miniapp

yarn

yarn add @leafer-draw/miniapp

bun

bun add @leafer-draw/miniapp

Update

Learn how to quickly update versions.

Download CDN version

You can also download the library file locally and import it directly. This method currently cannot use additional plugins.

https://unpkg.com/@leafer-draw/miniapp@2.3.1/dist/miniapp.module.js

https://unpkg.com/@leafer-draw/miniapp@2.3.1/dist/miniapp.module.min.js

Notes

1. WeChat Mini Program has issues loading SVG images。

2. Shadows and some features are still being adapted for compatibility。

3. When used in the web-view component, WeChat JS-SDK uploads PNG images as JPG format. Please use native HTML5 input for uploading。

Generate Poster

Create a rectangle, then export it as an image (offscreen canvas mode is supported)。

index.ts

import { Leafer, Rect } from '@leafer-draw/miniapp'

Page({
  onReady() {
    // automatically create a 350*800 offscreen canvas
    const leafer = new Leafer({ width: 350, height: 800 })

    const rect = new Rect({
      x: 100,
      y: 100,
      width: 100,
      height: 100,
      fill: '#32cd79',
    })

    leafer.add(rect)

    // automatically save to album
    leafer.export('album.png', { screenshot: true }).then(() => {
      // logic to notify successful save to album
    })
  },
})

Usage

The usage, global variables, and @leafer-ui/miniapp are consistent. You only need to change the package name to run the official example code.