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@smartdoca/canvas

v0.4.1

Published

A focused, local-first vector canvas editor built with React and LeaferJS

Readme

aidcanvas

基于 React、LeaferJS 和 Yjs 的矢量画布编辑器。

基础使用

import { CanvasEditor } from 'aidcanvas'
import 'aidcanvas/style.css'

export function Canvas() {
  return <CanvasEditor mode="edit" />
}

mode 是唯一权限入口。宿主可通过 toolbarStart、toolbarEnd、headerActions、hostActions 和 selectionActions 扩展界面,通过 messages 覆盖稳定的国际化键。

协同使用

新文档由权威端创建 CanvasModel,客户端恢复 checkpoint 后将同一 model 注入编辑器:

import { CanvasModel } from 'aidcanvas/model'

const model = CanvasModel.restore(checkpoint)
<CanvasEditor
  model={model}
  hostManaged
  mode={canEdit ? 'edit' : 'readonly'}
  sessionId={sessionId}
/>

包只实现当前 aidcanvas-yjs schema。网络、认证、ACK、outbox、checkpoint、重连和业务评论由宿主负责。远端更新只通过 model.applyUpdate 进入,宿主监听 model.onLocalUpdate 持久化本地 update。详见 协同接入。

Handle

CanvasEditorRef 提供当前接口:getValue、setValue、getSelection、select、updateSelection、removeSelection、addElement、addCustomShape、addExtensionElement、addImage、insertImageFile、clientToScene、exportFile、undo、redo、flush、groupSelection、ungroupSelection、find、reveal、revealElements、revealAnchor、replace、replaceAll、captureAnchor、resolveAnchor 和 capabilities。

model 模式禁止整篇 setValue;内容变更必须成为可追踪的模型事务。图片持久化稳定资源路径,显示地址由 resources 在使用时解析。

开发

yarn check
yarn build:lib
yarn test:model
yarn check:examples