tldraw/README.md
Steve Ruiz fe2e3c81fe
[improvement] Migrations (#217)
* Add better migrations

* Improves migrations

* rename dev to example

* renames migrate

* Removes workers from git

* Remove rogue dependency

* Fix dropdown navigation by keyboard
2021-11-04 15:48:39 +00:00

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# @tldraw/tldraw
This package contains the [tldraw](https://tldraw.com) editor as a React component named `<TLDraw>`. You can use this package to embed the editor in any React application.
🎨 Want to build your own tldraw-ish app instead? Try [@tldraw/core](https://github.com/tldraw/core).
💕 Love this library? Consider [becoming a sponsor](https://github.com/sponsors/steveruizok?frequency=recurring&sponsor=steveruizok).
## Installation
Use your package manager of choice to install `@tldraw/core` and its peer dependencies.
```bash
yarn add @tldraw/tldraw
# or
npm i @tldraw/tldraw
```
## Usage
Import the `TLDraw` React component and use it in your app.
```tsx
import { TLDraw } from '@tldraw/tldraw'
function App() {
return <TLDraw />
}
```
You can control the `TLDraw` component through props:
```tsx
import { TLDraw, TLDrawDocument } from '@tldraw/tldraw'
function App() {
const myDocument: TLDrawDocument = {}
return <TLDraw document={document} />
}
```
Or imperatively through the `TLDrawState` instance:
```tsx
import { TLDraw, TLDrawState } from '@tldraw/tldraw'
function App() {
const handleMount = React.useCallback((tlstate: TLDrawState) => {
const myDocument: TLDrawDocument = {}
tlstate.loadDocument(myDocument).selectAll()
}, [])
return <TLDraw onMount={handleMount} />
}
```
## Documentation
### `TLDraw`
The `TLDraw` React component is the [tldraw](https://tldraw.com) editor exported as a standalone component. You can control the editor through props, or through the `TLDrawState`'s imperative API. **All props are optional.**
| Prop | Type | Description |
| --------------- | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `id` | `string` | An id under which to persist the component's state. |
| `document` | `TLDrawDocument` | An initial [`TLDrawDocument`](#tldrawdocument) object. |
| `currentPageId` | `string` | A current page id, referencing the `TLDrawDocument` object provided via the `document` prop. |
| `onMount` | `Function` | A callback function that will be called when the editor first mounts, receiving the current `TLDrawState`. |
| `onChange` | `Function` | A callback function that will be called whenever the `TLDrawState` updates. The update will include the current `TLDrawState` and the reason for the change. |
| `onUserChange` | `Function` | A callback function that will be fired when the user's "presence" information changes. |
| `autofocus` | `boolean` | Whether the editor should immediately receive focus. Defaults to true. |
| `showMenu` | `boolean` | Whether to show the menu. |
| `showPages` | `boolean` | Whether to show the pages menu. |
| `showStyles` | `boolean` | Whether to show the styles menu. |
| `showTools` | `boolean` | Whether to show the tools. |
| `showUI` | `boolean` | Whether to show any UI other than the canvas. |
### `TLDrawDocument`
A `TLDrawDocument` is an object with three properties:
- `id` - A unique ID for this document
- `pages` - A table of `TLDrawPage` objects
- `pageStates` - A table of `TLPageState` objects
- `version` - The document's version, used internally for migrations.
```ts
import { TLDrawDocument, TLDrawState } from '@tldraw/tldraw'
const tldocument: TLDrawDocument = {
id: 'doc',
version: TLDrawState.version,
pages: {
page1: {
id: 'page1',
shapes: {},
bindings: {},
},
},
pageStates: {
page1: {
id: 'page1',
selectedIds: [],
currentParentId: 'page1',
camera: {
point: [0, 0],
zoom: 1,
},
},
},
}
```
**Tip:** TLDraw is built [@tldraw/core](https://github.com/tldraw/core). The pages and pagestates in TLDraw are just objects containing `TLPage` and `TLPageState` objects from the core library. For more about these types, check out the [@tldraw/core](https://github.com/tldraw/core) documentation.
**Important:** In the `pages` object, each `TLPage` object must be keyed under its `id` property. Likewise, each `TLPageState` object must be keyed under its `id`. In addition, each `TLPageState` object must have an `id` that matches its corresponding page.
### Shapes
Your `TLPage` objects may include shapes: objects that fit one of the `TLDrawShape` interfaces listed below. All `TLDrawShapes` extends a common interface:
| Property | Type | Description |
| --------------------- | ---------------- | --------------------------------------------------------------- |
| `id` | `string` | A unique ID for the shape. |
| `name` | `string` | The shape's name. |
| `type` | `string` | The shape's type. |
| `parentId` | `string` | The ID of the shape's parent (a shape or its page). |
| `childIndex` | `number` | The shape's order within its parent's children, indexed from 1. |
| `point` | `number[]` | The `[x, y]` position of the shape. |
| `rotation` | `number[]` | (optional) The shape's rotation in radians. |
| `children` | `string[]` | (optional) The shape's child shape ids. |
| `handles` | `TLDrawHandle{}` | (optional) A table of `TLHandle` objects. |
| `isLocked` | `boolean` | (optional) True if the shape is locked. |
| `isHidden` | `boolean` | (optional) True if the shape is hidden. |
| `isEditing` | `boolean` | (optional) True if the shape is currently editing. |
| `isGenerated` | `boolean` | (optional) True if the shape is generated. |
| `isAspectRatioLocked` | `boolean` | (optional) True if the shape's aspect ratio is locked. |
> **Important:** In order for re-ordering to work correctly, a shape's `childIndex` values _must_ start from 1, not 0. The page or parent shape's "bottom-most" child should have a `childIndex` of 1.
The `ShapeStyle` object is a common style API for all shapes.
| Property | Type | Description |
| ---------- | ------------ | --------------------------------------- |
| `size` | `SizeStyle` | The size of the shape's stroke. |
| `dash` | `DashStyle` | The style of the shape's stroke. |
| `color` | `ColorStyle` | The shape's color. |
| `isFilled` | `boolean` | (optional) True if the shape is filled. |
#### `DrawShape`
A hand-drawn line.
| Property | Type | Description |
| -------- | ------------ | ----------------------------------------- |
| `points` | `number[][]` | An array of points as `[x, y, pressure]`. |
##### `RectangleShape`
A rectangular shape.
| Property | Type | Description |
| -------- | ---------- | --------------------------------------- |
| `size` | `number[]` | The `[width, height]` of the rectangle. |
#### `EllipseShape`
An elliptical shape.
| Property | Type | Description |
| -------- | ---------- | ----------------------------------- |
| `radius` | `number[]` | The `[x, y]` radius of the ellipse. |
#### `ArrowShape`
An arrow that can connect shapes.
| Property | Type | Description |
| ------------- | -------- | ----------------------------------------------------------------------- |
| `handles` | `object` | An object with three `TLHandle` properties: `start`, `end`, and `bend`. |
| `decorations` | `object` | An object with two properties `start`, `end`, and `bend`. |
#### `TextShape`
A line of text.
| Property | Type | Description |
| -------- | -------- | ------------------------- |
| `text` | `string` | The shape's text content. |
#### `StickyShape`
A sticky note.
| Property | Type | Description |
| -------- | -------- | ------------------------- |
| `text` | `string` | The shape's text content. |
### Bindings
A binding is a connection **from** one shape and **to** another shape. At the moment, only arrows may be bound "from". Most shapes may be bound "to", except other `ArrowShape` and `DrawShape`s.
| Property | Type | Description |
| ---------- | ---------------- | -------------------------------------------------------- |
| `id` | `string` | The binding's own unique ID. |
| `fromId` | `string` | The id of the `ArrowShape` that the binding is bound to. |
| `toId` | `string` | The id of the other shape that the binding is bound to. |
| `handleId` | `start` or `end` | The connected arrow handle. |
| `distance` | `number` | The distance from the bound point. |
| `point` | `number[]` | A normalized point representing the bound point. |
## Local Development
- Run `yarn` to install dependencies.
- Run `yarn start` to start the development server for the package and for the example.
- Open `localhost:5000` to view the example project.
- Run `yarn test` to execute unit tests via [Jest](https://jestjs.io).
- Run `yarn docs` to build the docs via [ts-doc](https://typedoc.org/).
## Example
See the `example` folder.
## Community
### Support
Need help? Please [open an issue](https://github.com/tldraw/tldraw/issues/new) for support.
### Discussion
Want to connect with other devs? Visit the [Discord channel](https://discord.gg/s4FXZ6fppJ).
### License
This project is licensed under MIT. If you're using the library in a commercial product, please consider [becoming a sponsor](https://github.com/sponsors/steveruizok?frequency=recurring&sponsor=steveruizok).
## Author
- [@steveruizok](https://twitter.com/steveruizok)