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feat(plugin): implement canvas node plugin system with dynamic registration and remote installation

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plugins/canvas/README.md
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# Infinite Canvas 画布节点插件
给画布扩展自定义节点。每个插件是一个**独立目录**,自带 `package.json` / `build.mjs` / `src/index.jsx` / `dist/`,互不耦合,可单独构建、发布、升级。
内置节点只有文本、图片、视频、音频、生成配置、组六种;其余节点(Markdown、SVG、HTML、3D 全景、便利贴……)都是插件。
## 目录约定
```
plugins/canvas/
markdown/ # 每个插件一个独立目录
package.json
build.mjs # esbuild 构建,产物名取目录名 → dist/markdown.js
src/index.jsx # 插件源码(默认导出工厂函数)
README.md
svg/ html/ panorama/ sticky-note/ ...
```
## 构建 / 发布 / 升级
```bash
cd plugins/canvas/<name>
npm install
npm run build # → dist/<name>.js,并同步到 web/public/plugins/<name>.js
npm run dev # watch,改动自动构建并同步
```
把 `dist/<name>.js` 托管到任意静态地址(CDN、GitHub Raw、对象存储),用户在画布「节点插件」管理器填该 URL 安装。升级时重新构建覆盖同一 URL,用户点「更新」即可。
## 本地开发
`npm run dev` 起 watch,在 `web/.env.local` 声明开发插件(逗号分隔多个):
```env
VITE_DEV_PLUGINS=/plugins/markdown.js,/plugins/svg.js
```
再起画布 `web`(`npm run dev`)。`VITE_DEV_PLUGINS` 里的插件每次刷新页面都会**重新拉取**(不缓存、不落库),流程即:改 `src/index.jsx` → watch 自动构建 → 刷新画布看到最新效果,无需反复安装。
## 插件文件构成
每个插件最终打包成**单个 `.js` 文件**(加载器 `fetch 单文件 → import`),但源码可以随意拆分:
- **多个 JS/JSX**:在 `src/index.jsx` 里 `import` 其它模块,esbuild `bundle` 会合并进一个产物。
- **CSS**:写独立 `.css` 文件,`import css from "./styles.css"` 拿到字符串(esbuild 用 `text` loader),放到插件的 `css` 字段即可——启用时自动注入 `<style>`,禁用/卸载时自动清理。也可以在 `setup(app)` 里 `app.injectCSS(css, key)` 手动注入(返回移除函数)。参考 `markdown/`。
- **静态资源**(图片/字体):用远程 URL,或让 esbuild 内联成 dataURL(在 `build.mjs` 的 `loader` 里给对应扩展名配 `dataurl`)。
- **重依赖**(three.js、marked 等):不要打进 bundle,运行时 `await import("https://esm.sh/...")` 动态加载。参考 `panorama/`、`markdown/`。
- **HTML**:HTML 节点是把 HTML 字符串塞进 sandbox iframe 的 `srcDoc`,自带 `<style>`,不需要插件级 CSS。参考 `html/`。
## 插件契约
默认导出**一个工厂函数**,接收宿主 `runtime`(内含宿主 React 实例,避免两份 React),返回插件对象:
```js
export default function (runtime) {
const { React } = runtime; // 也有 runtime.jsx / runtime.version / runtime.emit / runtime.on / runtime.injectCSS
return {
id: "my-plugin", // 唯一 id
name: "我的插件",
version: "1.0.0",
description: "……",
css: "…", // 可选:插件样式,自动注入/清理
nodes: [ /* CanvasNodeDefinition[] */ ],
setup(app) { return () => {}; }, // 可选,返回清理函数;app 含 injectCSS/emit/on
};
}
```
### CanvasNodeDefinition
```ts
{
type: string; // 建议 "<pluginId>:<name>",全局唯一
title: string; // 创建菜单/默认标题
icon: ReactNode; // 可以是 emoji 字符串,或 runtime.jsx(...)
description?: string;
defaultSize: { width, height };
defaultMetadata?: object; // 新建节点初始 metadata(文本内容放 content)
minimapColor?: string;
showInCreateMenu?: boolean; // 默认 true
hasSourceHandle?: boolean; // 右侧输出连接点,默认 true
keepAspectRatio?: (node) => boolean;
resource?: (node) => { kind: "text"|"image"|"video"|"audio", text?, url? } | null; // 作为上游输入被消费时输出什么
Content: ({ ctx }) => ReactNode; // 节点主体渲染
Panel?: ({ ctx, onClose }) => ReactNode; // 可选:节点下方面板
toolbar?: (ctx) => Array<{ id, title, label, icon, onClick, danger? }>; // 追加到 hover 工具栏
onDoubleClick?: (ctx) => boolean; // 返回 true 表示已处理双击
}
```
### ctx:节点与画布交互接口
`Content` / `Panel` / `toolbar` 都会拿到 `ctx`:
| 能力 | 说明 |
| --- | --- |
| `ctx.node` | 当前节点数据(含 `metadata.content` 等) |
| `ctx.theme` / `ctx.scale` | 当前画布主题 token 与缩放,用来让 UI 跟随主题 |
| `ctx.updateMetadata(patch)` | 更新自身 metadata(如保存内容) |
| `ctx.updateNode(patch)` | 更新自身 title/width/height |
| `ctx.getNode(id)` / `ctx.getNodes()` / `ctx.getConnections()` | 读画布 |
| `ctx.getUpstream()` / `ctx.getDownstream()` | 取上/下游相连节点 |
| `ctx.applyOps(ops)` | 用画布指令集增删节点/连线、选择、触发生成(见下) |
| `ctx.emit(event, payload)` / `ctx.on(event, handler)` | 节点/插件间事件通信 |
| `ctx.storage` | 插件私有持久化(按插件 id 命名空间) |
### 画布指令集(ctx.applyOps)
```js
ctx.applyOps([
{ type: "add_node", id?, nodeType, title?, x?, y?, width?, height?, metadata? },
{ type: "update_node", id, patch?, metadata? },
{ type: "delete_node", id? | ids? },
{ type: "connect_nodes", fromNodeId, toNodeId },
{ type: "delete_connections", id? | ids? | all? },
{ type: "select_nodes", ids },
{ type: "set_viewport", viewport },
{ type: "run_generation", nodeId, mode?, prompt? },
]);
```
## 注意
- 插件代码会在画布页面内**直接执行**,可访问浏览器本地数据(含 AI API Key)。发布前请自审,用户也只应安装可信来源。
- 交互控件记得 `onMouseDown={e => e.stopPropagation()}`(避免触发节点拖拽),滚动区域加 `onWheel={e => e.stopPropagation()}` 与容器 `data-canvas-no-zoom`(避免被画布缩放拦截)。
- 需要重依赖(如 three.js、marked)时,在源码里 `await import("https://esm.sh/...")` 动态加载,不要打进插件体积(参考 `panorama`、`markdown`)。
plugins/canvas/html/README.md
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# HTML 节点插件
Infinite Canvas 画布节点插件:用沙箱 iframe 渲染 HTML。源码里的 `{{input}}` 会被替换为上游文本节点内容。
## 构建
```bash
npm install
npm run build # 产物 dist/html.js,并同步到 web/public/plugins/html.js
npm run dev # watch
```
## 安装
画布 → 左上菜单「节点插件」→ 安装 URL 填 `/plugins/html.js`(或托管后的公网 URL)。
插件契约见 `plugins/canvas/README.md`。
plugins/canvas/html/build.mjs
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import { build, context } from "esbuild";
import { cp, mkdir } from "node:fs/promises";
import { basename, dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = dirname(fileURLToPath(import.meta.url));
const name = basename(root); // 目录名即插件产物名,如 markdown → markdown.js
const distDir = join(root, "dist");
// 本地开发同步到 web/public/plugins,便于用 /plugins/<name>.js 安装或走 VITE_DEV_PLUGINS
const publicDir = join(root, "..", "..", "..", "web", "public", "plugins");
const watch = process.argv.includes("--watch");
const syncToPublic = {
name: "sync-to-public",
setup(builder) {
builder.onEnd(async (result) => {
if (result.errors.length) return;
await mkdir(publicDir, { recursive: true });
await cp(join(distDir, `${name}.js`), join(publicDir, `${name}.js`));
console.log(`[${name}] synced → web/public/plugins/${name}.js`);
});
},
};
const options = {
entryPoints: [join(root, "src", "index.jsx")],
outfile: join(distDir, `${name}.js`),
bundle: true,
format: "esm",
platform: "browser",
target: "es2020",
// 经典 JSX 转换 → React.createElement,使用源码里 runtime 解构出的 React
jsx: "transform",
jsxFactory: "React.createElement",
jsxFragment: "React.Fragment",
loader: { ".js": "jsx", ".jsx": "jsx", ".css": "text" },
// 通过 runtime.React 使用宿主 React,自身不打包 React
external: ["react", "react-dom"],
minify: !watch,
plugins: [syncToPublic],
};
if (watch) {
const ctx = await context(options);
await ctx.watch();
console.log(`[${name}] watching src/ ...`);
} else {
await build(options);
console.log(`[${name}] built → dist/${name}.js`);
}
plugins/canvas/html/package-lock.json
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plugins/canvas/html/package.json
+14
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@@ -0,0 +1,14 @@
{
"name": "canvas-plugin-html",
"version": "1.0.0",
"private": true,
"type": "module",
"description": "Infinite Canvas HTML 节点插件",
"scripts": {
"build": "node build.mjs",
"dev": "node build.mjs --watch"
},
"devDependencies": {
"esbuild": "^0.25.0"
}
}
plugins/canvas/html/src/index.jsx
+49
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@@ -0,0 +1,49 @@
// HTML 节点:沙箱 iframe 渲染 HTML,{{input}} 会替换为上游文本节点内容。
export default function htmlPlugin(runtime) {
const { React } = runtime;
const { useState, useMemo } = React;
function HtmlContent({ ctx }) {
const [editing, setEditing] = useState(false);
const value = ctx.node.metadata?.content || "";
const upstreamText = useMemo(() => ctx.getUpstream().map((node) => node.metadata?.content).filter(Boolean).join("\n"), [ctx]);
const html = value.replace(/\{\{\s*input\s*\}\}/g, upstreamText);
const toggle = { position: "absolute", right: 8, top: 8, zIndex: 20, width: 32, height: 32, display: "grid", placeItems: "center", borderRadius: 8, border: `1px solid ${ctx.theme.node.stroke}`, background: `${ctx.theme.toolbar.panel}dd`, color: ctx.theme.node.text, cursor: "pointer" };
return (
<div data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} style={{ position: "relative", height: "100%", width: "100%", display: "flex", flexDirection: "column" }}>
<button type="button" style={toggle} onClick={() => setEditing((v) => !v)} title={editing ? "预览" : "编辑源码"}>{editing ? "👁" : "✎"}</button>
{editing ? (
<textarea autoFocus value={value} placeholder="<div>Hello, {{input}}</div>" onChange={(e) => ctx.updateMetadata({ content: e.target.value })} onWheel={(e) => e.stopPropagation()} style={{ height: "100%", width: "100%", resize: "none", background: "transparent", padding: 16, fontFamily: "monospace", fontSize: 12, outline: "none", border: "none", color: ctx.theme.node.text }} />
) : value ? (
<iframe title="html-preview" sandbox="allow-scripts allow-forms" style={{ height: "100%", width: "100%", border: 0, borderRadius: 16, background: "#fff" }} srcDoc={html} />
) : (
<div style={{ height: "100%", width: "100%", display: "flex", flexDirection: "column", alignItems: "center", justifyContent: "center", gap: 8, color: ctx.theme.node.placeholder }}>
<span style={{ fontSize: 26 }}>{"</>"}</span>
<span style={{ fontSize: 14 }}>编辑 HTML 源码</span>
</div>
)}
</div>
);
}
return {
id: "html",
name: "HTML 节点",
version: "1.0.0",
description: "沙箱 iframe 渲染 HTML,支持 {{input}} 注入上游文本",
nodes: [
{
type: "html:render",
title: "HTML",
icon: "🌐",
description: "沙箱渲染 HTML",
defaultSize: { width: 420, height: 320 },
defaultMetadata: { content: "" },
minimapColor: "#ec4899",
Content: HtmlContent,
},
],
};
}
plugins/canvas/markdown/README.md
+23
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@@ -0,0 +1,23 @@
# Markdown 节点插件
Infinite Canvas 画布节点插件:在画布里编辑与渲染 Markdown。
## 构建
```bash
npm install
npm run build # 产物 dist/markdown.js,并同步到 web/public/plugins/markdown.js
npm run dev # watch,改动自动构建
```
## 安装
画布 → 左上菜单「节点插件」→ 安装 URL 填 `/plugins/markdown.js`(或托管后的公网 URL)。
## 本地开发
`npm run dev` 起 watch,在 `web/.env.local` 加 `VITE_DEV_PLUGINS=/plugins/markdown.js`,起画布后改 `src/index.jsx` 刷新页面即生效,无需反复安装。
插件契约见 `plugins/canvas/README.md`。
> 本插件演示了独立 CSS 文件用法:`src/styles.css` 经 esbuild `text` loader 打进 bundle,通过插件 `css` 字段自动注入/清理。
plugins/canvas/markdown/build.mjs
+50
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@@ -0,0 +1,50 @@
import { build, context } from "esbuild";
import { cp, mkdir } from "node:fs/promises";
import { basename, dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = dirname(fileURLToPath(import.meta.url));
const name = basename(root); // 目录名即插件产物名,如 markdown → markdown.js
const distDir = join(root, "dist");
// 本地开发同步到 web/public/plugins,便于用 /plugins/<name>.js 安装或走 VITE_DEV_PLUGINS
const publicDir = join(root, "..", "..", "..", "web", "public", "plugins");
const watch = process.argv.includes("--watch");
const syncToPublic = {
name: "sync-to-public",
setup(builder) {
builder.onEnd(async (result) => {
if (result.errors.length) return;
await mkdir(publicDir, { recursive: true });
await cp(join(distDir, `${name}.js`), join(publicDir, `${name}.js`));
console.log(`[${name}] synced → web/public/plugins/${name}.js`);
});
},
};
const options = {
entryPoints: [join(root, "src", "index.jsx")],
outfile: join(distDir, `${name}.js`),
bundle: true,
format: "esm",
platform: "browser",
target: "es2020",
// 经典 JSX 转换 → React.createElement,使用源码里 runtime 解构出的 React
jsx: "transform",
jsxFactory: "React.createElement",
jsxFragment: "React.Fragment",
loader: { ".js": "jsx", ".jsx": "jsx", ".css": "text" },
// 通过 runtime.React 使用宿主 React,自身不打包 React
external: ["react", "react-dom"],
minify: !watch,
plugins: [syncToPublic],
};
if (watch) {
const ctx = await context(options);
await ctx.watch();
console.log(`[${name}] watching src/ ...`);
} else {
await build(options);
console.log(`[${name}] built → dist/${name}.js`);
}
plugins/canvas/markdown/package-lock.json
Generated
+499
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@@ -0,0 +1,499 @@
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}
plugins/canvas/markdown/package.json
+14
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@@ -0,0 +1,14 @@
{
"name": "canvas-plugin-markdown",
"version": "1.0.0",
"private": true,
"type": "module",
"description": "Infinite Canvas Markdown 节点插件",
"scripts": {
"build": "node build.mjs",
"dev": "node build.mjs --watch"
},
"devDependencies": {
"esbuild": "^0.25.0"
}
}
plugins/canvas/markdown/src/index.jsx
+64
View File
@@ -0,0 +1,64 @@
// Markdown 节点:编辑与渲染 Markdown。marked 从 CDN 按需加载,不打进插件体积。
// styles.css 由 esbuild 以 text 方式打进 bundle,通过 plugin.css 自动注入。
import css from "./styles.css";
let markedPromise;
function loadMarked() {
if (!markedPromise) markedPromise = import("https://esm.sh/marked@14").then((mod) => mod.marked);
return markedPromise;
}
export default function markdownPlugin(runtime) {
const { React } = runtime;
const { useState, useEffect } = React;
function MarkdownContent({ ctx }) {
const [editing, setEditing] = useState(false);
const [html, setHtml] = useState("");
const value = ctx.node.metadata?.content || "";
useEffect(() => {
let alive = true;
loadMarked().then((marked) => {
if (alive) setHtml(marked.parse(value || "*双击右上角按钮编辑 Markdown*"));
});
return () => {
alive = false;
};
}, [value]);
const toggle = { position: "absolute", right: 8, top: 8, zIndex: 20, width: 32, height: 32, display: "grid", placeItems: "center", borderRadius: 8, border: `1px solid ${ctx.theme.node.stroke}`, background: `${ctx.theme.toolbar.panel}dd`, color: ctx.theme.node.text, cursor: "pointer" };
return (
<div data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} style={{ position: "relative", height: "100%", width: "100%", display: "flex", flexDirection: "column" }}>
<button type="button" style={toggle} onClick={() => setEditing((v) => !v)} title={editing ? "预览" : "编辑"}>{editing ? "👁" : "✎"}</button>
{editing ? (
<textarea autoFocus value={value} placeholder="# 输入 Markdown" onChange={(e) => ctx.updateMetadata({ content: e.target.value })} onWheel={(e) => e.stopPropagation()} style={{ height: "100%", width: "100%", resize: "none", background: "transparent", padding: 16, fontFamily: "monospace", fontSize: 14, outline: "none", border: "none", color: ctx.theme.node.text }} />
) : (
<div className="cnv-md" onWheel={(e) => e.stopPropagation()} style={{ color: ctx.theme.node.text }} dangerouslySetInnerHTML={{ __html: html }} />
)}
</div>
);
}
return {
id: "markdown",
name: "Markdown 节点",
version: "1.0.0",
description: "在画布中编辑与渲染 Markdown",
css,
nodes: [
{
type: "markdown:doc",
title: "Markdown",
icon: "📝",
description: "编辑与渲染 Markdown",
defaultSize: { width: 360, height: 300 },
defaultMetadata: { content: "" },
minimapColor: "#6366f1",
resource: (node) => ({ kind: "text", text: node.metadata?.content }),
Content: MarkdownContent,
},
],
};
}
plugins/canvas/markdown/src/styles.css
+59
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@@ -0,0 +1,59 @@
.cnv-md {
height: 100%;
width: 100%;
overflow: auto;
padding: 16px;
font-size: 14px;
line-height: 1.6;
}
.cnv-md h1,
.cnv-md h2,
.cnv-md h3 {
margin: 0.6em 0 0.3em;
font-weight: 600;
line-height: 1.3;
}
.cnv-md h1 {
font-size: 1.5em;
}
.cnv-md h2 {
font-size: 1.3em;
}
.cnv-md p {
margin: 0.5em 0;
}
.cnv-md a {
color: #6366f1;
text-decoration: underline;
}
.cnv-md code {
padding: 0.1em 0.35em;
border-radius: 4px;
background: rgba(120, 120, 120, 0.16);
font-family: monospace;
font-size: 0.9em;
}
.cnv-md pre {
padding: 12px;
border-radius: 8px;
background: rgba(120, 120, 120, 0.14);
overflow: auto;
}
.cnv-md pre code {
padding: 0;
background: transparent;
}
.cnv-md ul,
.cnv-md ol {
padding-left: 1.4em;
margin: 0.5em 0;
}
.cnv-md blockquote {
margin: 0.5em 0;
padding-left: 0.8em;
border-left: 3px solid rgba(120, 120, 120, 0.4);
opacity: 0.85;
}
.cnv-md img {
max-width: 100%;
}
plugins/canvas/panorama/README.md
+17
View File
@@ -0,0 +1,17 @@
# 3D 全景节点插件
Infinite Canvas 画布节点插件:查看 360° 等距柱状(equirectangular)全景图,可拖拽旋转。可从上游图片节点自动取图。three.js 运行时从 CDN 按需加载,不打进插件体积。
## 构建
```bash
npm install
npm run build # 产物 dist/panorama.js,并同步到 web/public/plugins/panorama.js
npm run dev # watch
```
## 安装
画布 → 左上菜单「节点插件」→ 安装 URL 填 `/plugins/panorama.js`(或托管后的公网 URL)。连接一个全景图片节点到本节点即可查看。
插件契约见 `plugins/canvas/README.md`。
plugins/canvas/panorama/build.mjs
+50
View File
@@ -0,0 +1,50 @@
import { build, context } from "esbuild";
import { cp, mkdir } from "node:fs/promises";
import { basename, dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = dirname(fileURLToPath(import.meta.url));
const name = basename(root); // 目录名即插件产物名,如 markdown → markdown.js
const distDir = join(root, "dist");
// 本地开发同步到 web/public/plugins,便于用 /plugins/<name>.js 安装或走 VITE_DEV_PLUGINS
const publicDir = join(root, "..", "..", "..", "web", "public", "plugins");
const watch = process.argv.includes("--watch");
const syncToPublic = {
name: "sync-to-public",
setup(builder) {
builder.onEnd(async (result) => {
if (result.errors.length) return;
await mkdir(publicDir, { recursive: true });
await cp(join(distDir, `${name}.js`), join(publicDir, `${name}.js`));
console.log(`[${name}] synced → web/public/plugins/${name}.js`);
});
},
};
const options = {
entryPoints: [join(root, "src", "index.jsx")],
outfile: join(distDir, `${name}.js`),
bundle: true,
format: "esm",
platform: "browser",
target: "es2020",
// 经典 JSX 转换 → React.createElement,使用源码里 runtime 解构出的 React
jsx: "transform",
jsxFactory: "React.createElement",
jsxFragment: "React.Fragment",
loader: { ".js": "jsx", ".jsx": "jsx", ".css": "text" },
// 通过 runtime.React 使用宿主 React,自身不打包 React
external: ["react", "react-dom"],
minify: !watch,
plugins: [syncToPublic],
};
if (watch) {
const ctx = await context(options);
await ctx.watch();
console.log(`[${name}] watching src/ ...`);
} else {
await build(options);
console.log(`[${name}] built → dist/${name}.js`);
}
plugins/canvas/panorama/package-lock.json
Generated
+499
View File
@@ -0,0 +1,499 @@
{
"name": "canvas-plugin-panorama",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
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"version": "1.0.0",
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plugins/canvas/panorama/package.json
+14
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@@ -0,0 +1,14 @@
{
"name": "canvas-plugin-panorama",
"version": "1.0.0",
"private": true,
"type": "module",
"description": "Infinite Canvas 3D 全景节点插件",
"scripts": {
"build": "node build.mjs",
"dev": "node build.mjs --watch"
},
"devDependencies": {
"esbuild": "^0.25.0"
}
}
plugins/canvas/panorama/src/index.jsx
+126
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@@ -0,0 +1,126 @@
// 3D 全景节点:等距柱状(equirectangular)全景查看器。three.js 从 CDN 按需加载。
let threePromise;
function loadThree() {
if (!threePromise) threePromise = import("https://esm.sh/three@0.180.0");
return threePromise;
}
export default function panoramaPlugin(runtime) {
const { React } = runtime;
const { useEffect, useRef } = React;
function PanoramaContent({ ctx }) {
const mountRef = useRef(null);
const upstreamImage = ctx.getUpstream().map((node) => node.metadata?.content).find(Boolean);
const source = ctx.node.metadata?.content || upstreamImage;
useEffect(() => {
const mount = mountRef.current;
if (!mount || !source) return;
let disposed = false;
let cleanup = () => {};
loadThree().then((THREE) => {
if (disposed || !mountRef.current) return;
const width = mount.clientWidth || 400;
const height = mount.clientHeight || 300;
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 100);
const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(width, height);
renderer.setPixelRatio(window.devicePixelRatio);
mount.appendChild(renderer.domElement);
const geometry = new THREE.SphereGeometry(50, 60, 40);
geometry.scale(-1, 1, 1); // 翻转法线,从球心向内看
const texture = new THREE.TextureLoader().load(source);
texture.colorSpace = THREE.SRGBColorSpace;
const sphere = new THREE.Mesh(geometry, new THREE.MeshBasicMaterial({ map: texture }));
scene.add(sphere);
let lon = 0;
let lat = 0;
let dragging = false;
let startX = 0;
let startY = 0;
let startLon = 0;
let startLat = 0;
const onDown = (event) => {
dragging = true;
startX = event.clientX;
startY = event.clientY;
startLon = lon;
startLat = lat;
};
const onMove = (event) => {
if (!dragging) return;
lon = startLon - (event.clientX - startX) * 0.2;
lat = Math.max(-85, Math.min(85, startLat + (event.clientY - startY) * 0.2));
};
const onUp = () => (dragging = false);
const canvas = renderer.domElement;
canvas.style.cursor = "grab";
canvas.addEventListener("pointerdown", onDown);
window.addEventListener("pointermove", onMove);
window.addEventListener("pointerup", onUp);
let frame = 0;
const animate = () => {
frame = requestAnimationFrame(animate);
if (!dragging) lon += 0.03; // 缓慢自转
const phi = THREE.MathUtils.degToRad(90 - lat);
const theta = THREE.MathUtils.degToRad(lon);
camera.lookAt(new THREE.Vector3(Math.sin(phi) * Math.cos(theta), Math.cos(phi), Math.sin(phi) * Math.sin(theta)));
renderer.render(scene, camera);
};
animate();
cleanup = () => {
cancelAnimationFrame(frame);
canvas.removeEventListener("pointerdown", onDown);
window.removeEventListener("pointermove", onMove);
window.removeEventListener("pointerup", onUp);
renderer.dispose();
geometry.dispose();
texture.dispose();
if (canvas.parentElement === mount) mount.removeChild(canvas);
};
});
return () => {
disposed = true;
cleanup();
};
}, [source]);
if (!source) {
return (
<div style={{ height: "100%", width: "100%", display: "flex", flexDirection: "column", alignItems: "center", justifyContent: "center", gap: 8, color: ctx.theme.node.placeholder }}>
<span style={{ fontSize: 26 }}>🌐</span>
<span style={{ fontSize: 14 }}>连接一个全景图片节点</span>
</div>
);
}
return <div ref={mountRef} data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} onWheel={(e) => e.stopPropagation()} style={{ height: "100%", width: "100%", overflow: "hidden", borderRadius: 16, background: "#000" }} />;
}
return {
id: "panorama",
name: "3D 全景节点",
version: "1.0.0",
description: "查看 360° 等距柱状全景图,可从上游图片节点取图",
nodes: [
{
type: "panorama:viewer",
title: "3D 全景",
icon: "🌐",
description: "360° 全景查看器",
defaultSize: { width: 480, height: 300 },
defaultMetadata: {},
minimapColor: "#0ea5e9",
Content: PanoramaContent,
},
],
};
}
plugins/canvas/sticky-note/README.md
+17
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@@ -0,0 +1,17 @@
# 便利贴节点插件
Infinite Canvas 画布节点插件:彩色便利贴,可换色、编辑,并演示用 `ctx.applyOps` 衍生一个连到自己的文本节点(节点间交互示例)。
## 构建
```bash
npm install
npm run build # 产物 dist/sticky-note.js,并同步到 web/public/plugins/sticky-note.js
npm run dev # watch
```
## 安装
画布 → 左上菜单「节点插件」→ 安装 URL 填 `/plugins/sticky-note.js`(或托管后的公网 URL)。
插件契约见 `plugins/canvas/README.md`。
plugins/canvas/sticky-note/build.mjs
+50
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@@ -0,0 +1,50 @@
import { build, context } from "esbuild";
import { cp, mkdir } from "node:fs/promises";
import { basename, dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = dirname(fileURLToPath(import.meta.url));
const name = basename(root); // 目录名即插件产物名,如 markdown → markdown.js
const distDir = join(root, "dist");
// 本地开发同步到 web/public/plugins,便于用 /plugins/<name>.js 安装或走 VITE_DEV_PLUGINS
const publicDir = join(root, "..", "..", "..", "web", "public", "plugins");
const watch = process.argv.includes("--watch");
const syncToPublic = {
name: "sync-to-public",
setup(builder) {
builder.onEnd(async (result) => {
if (result.errors.length) return;
await mkdir(publicDir, { recursive: true });
await cp(join(distDir, `${name}.js`), join(publicDir, `${name}.js`));
console.log(`[${name}] synced → web/public/plugins/${name}.js`);
});
},
};
const options = {
entryPoints: [join(root, "src", "index.jsx")],
outfile: join(distDir, `${name}.js`),
bundle: true,
format: "esm",
platform: "browser",
target: "es2020",
// 经典 JSX 转换 → React.createElement,使用源码里 runtime 解构出的 React
jsx: "transform",
jsxFactory: "React.createElement",
jsxFragment: "React.Fragment",
loader: { ".js": "jsx", ".jsx": "jsx", ".css": "text" },
// 通过 runtime.React 使用宿主 React,自身不打包 React
external: ["react", "react-dom"],
minify: !watch,
plugins: [syncToPublic],
};
if (watch) {
const ctx = await context(options);
await ctx.watch();
console.log(`[${name}] watching src/ ...`);
} else {
await build(options);
console.log(`[${name}] built → dist/${name}.js`);
}
plugins/canvas/sticky-note/package-lock.json
Generated
+499
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plugins/canvas/sticky-note/package.json
+14
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@@ -0,0 +1,14 @@
{
"name": "canvas-plugin-sticky-note",
"version": "1.0.0",
"private": true,
"type": "module",
"description": "Infinite Canvas 便利贴节点插件",
"scripts": {
"build": "node build.mjs",
"dev": "node build.mjs --watch"
},
"devDependencies": {
"esbuild": "^0.25.0"
}
}
plugins/canvas/sticky-note/src/index.jsx
+64
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@@ -0,0 +1,64 @@
// 便利贴节点:可换色、可编辑、可衍生文本节点(演示 applyOps 与其他节点交互)。
export default function stickyNotePlugin(runtime) {
const { React } = runtime;
const { useState } = React;
const COLORS = ["#fde68a", "#fca5a5", "#a7f3d0", "#bfdbfe", "#ddd6fe"];
function StickyContent({ ctx }) {
const [editing, setEditing] = useState(false);
const color = ctx.node.metadata?.pluginColor || COLORS[0];
const text = ctx.node.metadata?.content || "";
const cycleColor = () => {
const next = COLORS[(COLORS.indexOf(color) + 1) % COLORS.length];
ctx.updateMetadata({ pluginColor: next });
};
// 演示与其他节点交互:用画布指令集派生一个连到自己的文本节点
const spawnText = () => {
const id = `sticky-${ctx.node.id}-${ctx.getNodes().length}`;
ctx.applyOps([
{ type: "add_node", id, nodeType: "text", title: "便利贴衍生", x: ctx.node.position?.x ?? 0, y: (ctx.node.position?.y ?? 0) + 260, metadata: { content: text, status: "success" } },
{ type: "connect_nodes", fromNodeId: ctx.node.id, toNodeId: id },
]);
};
const btn = { width: 26, height: 26, borderRadius: 8, border: "none", cursor: "pointer", background: "rgba(0,0,0,.08)", fontSize: 13 };
return (
<div data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} style={{ position: "relative", height: "100%", width: "100%", display: "flex", flexDirection: "column", background: color, borderRadius: 16, padding: 12, boxSizing: "border-box" }}>
<div style={{ display: "flex", gap: 6, justifyContent: "flex-end", marginBottom: 6 }}>
<button type="button" title="换颜色" onClick={cycleColor} style={btn}>🎨</button>
<button type="button" title="衍生文本节点" onClick={spawnText} style={btn}>➡️</button>
<button type="button" title={editing ? "完成" : "编辑"} onClick={() => setEditing((v) => !v)} style={btn}>{editing ? "✓" : "✎"}</button>
</div>
{editing ? (
<textarea autoFocus value={text} onChange={(e) => ctx.updateMetadata({ content: e.target.value })} onWheel={(e) => e.stopPropagation()} style={{ flex: 1, resize: "none", border: "none", outline: "none", background: "transparent", color: "#1c1917", fontSize: 15, lineHeight: 1.5 }} />
) : (
<div style={{ flex: 1, whiteSpace: "pre-wrap", overflow: "auto", color: "#1c1917", fontSize: 15, lineHeight: 1.5 }}>{text || "双击 ✎ 编辑便利贴"}</div>
)}
</div>
);
}
return {
id: "sticky-note",
name: "便利贴节点",
version: "1.0.0",
description: "可换色、可编辑、可衍生文本节点的便利贴",
nodes: [
{
type: "sticky-note:note",
title: "便利贴",
icon: "📌",
description: "彩色便利贴",
defaultSize: { width: 240, height: 200 },
defaultMetadata: { content: "", pluginColor: "#fde68a" },
minimapColor: "#f59e0b",
resource: (node) => ({ kind: "text", text: node.metadata?.content }),
Content: StickyContent,
},
],
};
}
plugins/canvas/svg/README.md
+17
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@@ -0,0 +1,17 @@
# SVG 节点插件
Infinite Canvas 画布节点插件:编辑与渲染 SVG,无自身内容时自动取上游文本节点里的 SVG 源码。
## 构建
```bash
npm install
npm run build # 产物 dist/svg.js,并同步到 web/public/plugins/svg.js
npm run dev # watch
```
## 安装
画布 → 左上菜单「节点插件」→ 安装 URL 填 `/plugins/svg.js`(或托管后的公网 URL)。
插件契约见 `plugins/canvas/README.md`。
plugins/canvas/svg/build.mjs
+50
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@@ -0,0 +1,50 @@
import { build, context } from "esbuild";
import { cp, mkdir } from "node:fs/promises";
import { basename, dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
const root = dirname(fileURLToPath(import.meta.url));
const name = basename(root); // 目录名即插件产物名,如 markdown → markdown.js
const distDir = join(root, "dist");
// 本地开发同步到 web/public/plugins,便于用 /plugins/<name>.js 安装或走 VITE_DEV_PLUGINS
const publicDir = join(root, "..", "..", "..", "web", "public", "plugins");
const watch = process.argv.includes("--watch");
const syncToPublic = {
name: "sync-to-public",
setup(builder) {
builder.onEnd(async (result) => {
if (result.errors.length) return;
await mkdir(publicDir, { recursive: true });
await cp(join(distDir, `${name}.js`), join(publicDir, `${name}.js`));
console.log(`[${name}] synced → web/public/plugins/${name}.js`);
});
},
};
const options = {
entryPoints: [join(root, "src", "index.jsx")],
outfile: join(distDir, `${name}.js`),
bundle: true,
format: "esm",
platform: "browser",
target: "es2020",
// 经典 JSX 转换 → React.createElement,使用源码里 runtime 解构出的 React
jsx: "transform",
jsxFactory: "React.createElement",
jsxFragment: "React.Fragment",
loader: { ".js": "jsx", ".jsx": "jsx", ".css": "text" },
// 通过 runtime.React 使用宿主 React,自身不打包 React
external: ["react", "react-dom"],
minify: !watch,
plugins: [syncToPublic],
};
if (watch) {
const ctx = await context(options);
await ctx.watch();
console.log(`[${name}] watching src/ ...`);
} else {
await build(options);
console.log(`[${name}] built → dist/${name}.js`);
}
plugins/canvas/svg/package-lock.json
Generated
+499
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plugins/canvas/svg/package.json
+14
View File
@@ -0,0 +1,14 @@
{
"name": "canvas-plugin-svg",
"version": "1.0.0",
"private": true,
"type": "module",
"description": "Infinite Canvas SVG 节点插件",
"scripts": {
"build": "node build.mjs",
"dev": "node build.mjs --watch"
},
"devDependencies": {
"esbuild": "^0.25.0"
}
}
plugins/canvas/svg/src/index.jsx
+51
View File
@@ -0,0 +1,51 @@
// SVG 节点:编辑与渲染 SVG,无自身内容时可取上游文本节点里的 SVG 源码。
const DEFAULT_SVG = '<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" fill="#6366f1"/></svg>';
export default function svgPlugin(runtime) {
const { React } = runtime;
const { useState, useEffect } = React;
function SvgContent({ ctx }) {
const [editing, setEditing] = useState(false);
const stored = ctx.node.metadata?.content;
const upstream = ctx.getUpstream().map((node) => node.metadata?.content).find((text) => text?.trim().startsWith("<svg"));
const value = stored ?? "";
const svg = value.trim() || upstream || DEFAULT_SVG;
useEffect(() => {
if (stored === undefined && upstream) ctx.updateMetadata({ content: upstream });
}, [ctx, stored, upstream]);
const toggle = { position: "absolute", right: 8, top: 8, zIndex: 20, width: 32, height: 32, display: "grid", placeItems: "center", borderRadius: 8, border: `1px solid ${ctx.theme.node.stroke}`, background: `${ctx.theme.toolbar.panel}dd`, color: ctx.theme.node.text, cursor: "pointer" };
return (
<div data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} style={{ position: "relative", height: "100%", width: "100%", display: "flex", flexDirection: "column" }}>
<button type="button" style={toggle} onClick={() => setEditing((v) => !v)} title={editing ? "预览" : "编辑源码"}>{editing ? "👁" : "✎"}</button>
{editing ? (
<textarea autoFocus value={value} placeholder={DEFAULT_SVG} onChange={(e) => ctx.updateMetadata({ content: e.target.value })} onWheel={(e) => e.stopPropagation()} style={{ height: "100%", width: "100%", resize: "none", background: "transparent", padding: 16, fontFamily: "monospace", fontSize: 12, outline: "none", border: "none", color: ctx.theme.node.text }} />
) : (
<div style={{ height: "100%", width: "100%", display: "flex", alignItems: "center", justifyContent: "center", padding: 16 }} dangerouslySetInnerHTML={{ __html: svg }} />
)}
</div>
);
}
return {
id: "svg",
name: "SVG 节点",
version: "1.0.0",
description: "编辑与渲染 SVG,可接收上游文本节点的 SVG 源码",
nodes: [
{
type: "svg:vector",
title: "SVG",
icon: "🔷",
description: "渲染 SVG 矢量图",
defaultSize: { width: 320, height: 320 },
defaultMetadata: {},
minimapColor: "#14b8a6",
Content: SvgContent,
},
],
};
}