tldraw/apps/docs/content/getting-started/installation.mdx
Steve Ruiz ac0259a6af
Composable custom UI (#2796)
This PR refactors our menu systems and provides an interface to hide or
replace individual user interface elements.

# Background

Previously, we've had two types of overrides:
- "schema" overrides that would allow insertion or replacement of items
in the different menus
- "component" overrides that would replace components in the editor's
user interface

This PR is an attempt to unify the two and to provide for additional
cases where the "schema-based" user interface had begun to break down.

# Approach

This PR makes no attempt to change the `actions` or `tools`
overrides—the current system seems to be correct for those because they
are not reactive. The challenge with the other ui schemas is that they
_are_ reactive, and thus the overrides both need to a) be fed in from
outside of the editor as props, and b) react to changes from the editor,
which is an impossible situation.

The new approach is to use React to declare menu items. (Surprise!) 

```tsx
function CustomHelpMenuContent() {
	return (
		<>
			<DefaultHelpMenuContent />
			<TldrawUiMenuGroup id="custom stuff">
				<TldrawUiMenuItem
					id="about"
					label="Like my posts"
					icon="external-link"
					readonlyOk
					onSelect={() => {
						window.open('https://x.com/tldraw', '_blank')
					}}
				/>
			</TldrawUiMenuGroup>
		</>
	)
}

const components: TLComponents = {
	HelpMenuContent: CustomHelpMenuContent,
}

export default function CustomHelpMenuContentExample() {
	return (
		<div className="tldraw__editor">
			<Tldraw components={components} />
		</div>
	)
}
```

We use a `components` prop with the combined editor and ui components.

- [ ] Create a "layout" component?
- [ ] Make UI components more isolated? If possible, they shouldn't
depend on styles outside of themselves, so that they can be used in
other layouts. Maybe we wait on this because I'm feeling a slippery
slope toward presumptions about configurability.
- [ ] OTOH maybe we go hard and consider these things as separate
components, even packages, with their own interfaces for customizability
/ configurability, just go all the way with it, and see what that looks
like.

# Pros

Top line: you can customize tldraw's user interface in a MUCH more
granular / powerful way than before.

It solves a case where menu items could not be made stateful from
outside of the editor context, and provides the option to do things in
the menus that we couldn't allow previously with the "schema-based"
approach.

It also may (who knows) be more performant because we can locate the
state inside of the components for individual buttons and groups,
instead of all at the top level above the "schema". Because items /
groups decide their own state, we don't have to have big checks on how
many items are selected, or whether we have a flippable state. Items and
groups themselves are allowed to re-build as part of the regular React
lifecycle. Menus aren't constantly being rebuilt, if that were ever an
issue.

Menu items can be shared between different menu types. We'll are
sometimes able to re-use items between, for example, the menu and the
context menu and the actions menu.

Our overrides no longer mutate anything, so there's less weird searching
and finding.

# Cons

This approach can make customization menu contents significantly more
complex, as an end user would need to re-declare most of a menu in order
to make any change to it. Luckily a user can add things to the top or
bottom of the context menu fairly easily. (And who knows, folks may
actually want to do deep customization, and this allows for it.)

It's more code. We are shipping more react components, basically one for
each menu item / group.

Currently this PR does not export the subcomponents, i.e. menu items. If
we do want to export these, then heaven help us, it's going to be a
_lot_ of exports.

# Progress 

- [x] Context menu
- [x] Main menu
- [x] Zoom menu
- [x] Help menu
- [x] Actions menu
- [x] Keyboard shortcuts menu
- [x] Quick actions in main menu? (new)
- [x] Helper buttons? (new)
- [x] Debug Menu

And potentially
- [x] Toolbar
- [x] Style menu
- [ ] Share zone
- [x] Navigation zone
- [ ] Other zones

### Change Type

- [x] `major` — Breaking change

### Test Plan

1. use the context menu
2. use the custom context menu example
3. use cursor chat in the context menu

- [x] Unit Tests
- [ ] End to end tests

### Release Notes

- Add a brief release note for your PR here.
2024-02-15 12:10:09 +00:00

189 lines
6.8 KiB
Text

---
title: Installation
status: published
author: steveruizok
date: 3/22/2023
order: 1
---
At the moment the `@tldraw/tldraw` package is in beta. We also ship a canary version which is always up to date with the main branch of tldraw [repository](https://github.com/tldraw/tldraw).
## Beta
First, install the `@tldraw/tldraw` package using `@beta` for the latest beta release.
<CodeBlock code={{'yarn': 'yarn add @tldraw/tldraw@beta', 'npm': 'npm install @tldraw/tldraw@beta', 'pnpm': 'pnpm add @tldraw/tldraw@beta'}} />
## Canary
To get the very latest version, use the [latest canary release](https://www.npmjs.com/package/@tldraw/tldraw?activeTab=versions). Docs for the very latest version are also available at [canary.tldraw.dev](https://canary.tldraw.dev).
<CodeBlock code={{'yarn': 'yarn add @tldraw/tldraw@canary', 'npm': 'npm install @tldraw/tldraw@canary', 'pnpm': 'pnpm add @tldraw/tldraw@canary'}} />
## Usage
You can use the [Tldraw](?) component inside of any React component.
```tsx
import { Tldraw } from '@tldraw/tldraw'
import '@tldraw/tldraw/tldraw.css'
export default function () {
return (
<div style={{ position: 'fixed', inset: 0 }}>
<Tldraw />
</div>
)
}
```
### Wrapper
It's important that the [Tldraw](?) component is wrapped in a parent container that has an explicit size. Its height and width are set to `100%`, so it will fill its parent container.
### CSS
In addition to the [Tldraw](?) component itself, you should also import the `tldraw.css` file from the `@tldraw/tldraw` package.
```tsx
import '@tldraw/tldraw/tldraw.css'
```
You can alternatively import this file inside of another CSS file using the `@import` syntax.
```css
@import url('@tldraw/tldraw/tldraw.css');
```
If you'd like to deeply change the way that tldraw looks, you can copy the `tldraw.css` file into a new CSS file, make your changes, and import that instead.
### Fonts
We also use Inter as the default tldraw font. You can import this font however you like (or use a different font!) but here's the CSS import from Google fonts that we use:
```css
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');
```
### HTML
If you're using the [Tldraw](?) component in a full-screen app, you probably also want to update your `index.html`'s meta viewport element as shown below.
```html
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
```
This may not be critical to [Tldraw](?) performing correctly, however some features (such as safe area positioning) will only work correctly if these viewport options are set.
## Server Rendering
The [Tldraw](?) component can't be server-rendered. If you're using the component in a server-rendered framework (such as Next.js) then you need to import it dynamically.
```tsx
const Tldraw = dynamic(async () => (await import('@tldraw/tldraw')).Tldraw, { ssr: false })
```
### Using a bundler
If you're using a bundler like webpack or rollup, you can import the assets directly from the `@tldraw/assets` package. Here you can use `getAssetUrlsByMetaUrl` helper function:
```tsx
import { getAssetUrlsByMetaUrl } from '@tldraw/assets/urls'
const assetUrls = getAssetUrlsByMetaUrl()
<Tldraw assetUrls={assetUrls} />
```
## Usage in Frameworks
Visit our [framework examples repository](https://github.com/tldraw/examples) to see examples of tldraw being used in various frameworks.
## Static Assets
In order to use the [Tldraw](?) component, the app must be able to find certain assets. These are contained in the `embed-icons`, `fonts`, `icons`, and `translations` folders. We offer a few different ways of making these assets available to your app.
### Using a public CDN
By default we serve these assets from a [public CDN called unpkg](https://unpkg.com/browse/@tldraw/assets@2.0.0-alpha.12/), so everything should work out of the box and is a good way to get started.
If you would like to customize some of the assets you can pass the customizations to our [Tldraw](?) component. For example, to use a custom icon for the `hand` tool you can do the following:
```tsx
const assetUrls = {
icons: {
'tool-hand': './custom-tool-hand.svg',
},
}
<Tldraw assetUrls={assetUrls} />
```
This will use the custom icon for the `hand` tool and the default assets for everything else.
### Self-hosting static assets
If you want more flexibility you can also host these assets yourself:
1. Download the `embed-icons`, `fonts`, `icons`, and `translations` folders from the [assets folder](https://github.com/tldraw/tldraw/tree/main/assets) of the tldraw repository.
2. Place the folders in your project's public path.
3. Pass `assetUrls` prop to our `<Tldraw/>` component to let the component know where the assets live.
You can use our `getAssetUrls` helper function from the `@tldraw/assets` package to generate these urls for you.
```tsx
import { getAssetUrls } from '@tldraw/assets/selfHosted'
const assetUrls = getAssetUrls()
<Tldraw assetUrls={assetUrls} />
```
While these files must be available, you can overwrite the individual files: for example, by placing different icons under the same name or modifying / adding translations.
If you use a CDN for hosting these files you can specify the base url of your assets. To recreate the above option of serving the assets from unpkg you would do the following:
```ts
const assetUrls = getAssetUrls({
baseUrl: 'https://unpkg.com/@tldraw/assets@2.0.0-alpha.12/',
})
```
## Subcomponents
The [Tldraw](?) component combines two lower-level components: [TldrawEditor](?) and [TldrawUi](?). If you want to have more granular control, you can use those lower-level components directly. See [this example](https://github.com/tldraw/tldraw/blob/main/apps/examples/src/examples/ExplodedExample.tsx) for reference.
### Customize the default components
You can customize the appearance of the tldraw editor and ui using the [Tldraw](?) (or [TldrawEditor](?)) component's `components` prop.
```tsx
const components: TLComponents = {
Background: YourCustomBackground,
SvgDefs: YourCustomSvgDefs,
Brush: YourCustomBrush,
ZoomBrush: YourCustomBrush,
CollaboratorBrush: YourCustomBrush,
Cursor: YourCustomCursor,
CollaboratorCursor: YourCustomCursor,
CollaboratorHint: YourCustomCollaboratorHint,
CollaboratorShapeIndicator: YourCustomdicator,
Grid: YourCustomGrid,
Scribble: YourCustomScribble,
SnapLine: YourCustomSnapLine,
Handles: YourCustomHandles,
Handle: YourCustomHandle,
CollaboratorScribble: YourCustomScribble,
ErrorFallback: YourCustomErrorFallback,
ShapeErrorFallback: YourCustomShapeErrorFallback,
ShapeIndicatorErrorFallback: YourCustomShapeIndicatorErrorFallback,
Spinner: YourCustomSpinner,
SelectionBackground: YourCustomSelectionBackground,
SelectionForeground: YourCustomSelectionForeground,
HoveredShapeIndicator: YourCustomHoveredShapeIndicator,
// ...
}
<Tldraw components={components}/>
```