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Play.stories.tsx
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Play.stories.tsx
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import * as React from 'react'
const { useState, useEffect, useRef } = React
import { useHowl } from '../src/useHowl.js'
import { Play } from '../src/Play.js'
import { action } from '@storybook/addon-actions'
import type { Meta, StoryFn } from '@storybook/react'
// @ts-ignore
import sound1 from './static/audio/sound1.mp3'
// @ts-ignore
import sound2mp3 from './static/audio/sound2.mp3'
// @ts-ignore
import sound2web from './static/audio/sound2.webm'
const meta = {
title: 'Components/Play',
component: Play,
tags: ['autodocs'],
} satisfies Meta<typeof Play>
export default meta
type Story = StoryFn<typeof Play>
const PlayPauseButton = ({ play, setPlay }: { play: boolean; setPlay: (playing: boolean) => void }) => (
<p>
<button onClick={() => setPlay(!play)}>{play ? 'Pause ⏸' : 'Play ▶'}</button>
</p>
)
export const renderPlay: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
return (
<>
<p>Sound stops when the Play component is unmounted.</p>
<p>State: {state}</p>
<PlayPauseButton play={play} setPlay={setPlay} />
{play ? (
<Play howl={howl}>
{({ playing }) => <>This is the child of the play component! Playing: {playing().toString()}</>}
</Play>
) : null}
</>
)
}
export const noPreload: Story = () => {
const { howl, state, load, error } = useHowl({ src: sound1, preload: false })
const [play, setPlay] = useState(false)
useEffect(() => {
action(state)()
}, [state])
return (
<>
<p>The Play component will not be able to do anything until you call load.</p>
<p>State: {state}</p>
{state === 'unloaded' && <button onClick={() => load()}>Load</button>}
<PlayPauseButton play={play} setPlay={setPlay} />
{play && (
<Play howl={howl} onPlayError={action('onPlayError')}>
{({ playing }) => <>Playing: {playing().toString()}</>}
</Play>
)}
</>
)
}
export const stop: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
return (
<>
<p>
This component is being stopped with the <code>stop</code> prop.
</p>
<p>State: {state}</p>
<PlayPauseButton play={play} setPlay={setPlay} />
<Play howl={howl} stop={!play} onStop={action('onStop')} onPlay={action('onPlay')}>
{({ playing }) => <>Playing: {playing().toString()}</>}
</Play>
</>
)
}
export const rate: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
const [rate, setRate] = useState(2)
const decreaseRate = () => setRate((rate) => Math.max(rate - 0.5, 0.5))
const increaseRate = () => setRate((rate) => Math.min(rate + 0.5, 4))
return (
<>
<p>Control the rate of playback.</p>
<p>State: {state}</p>
<p>Rate: {rate * 100}%</p>
<PlayPauseButton play={play} setPlay={setPlay} />
<p>
<button onClick={decreaseRate} disabled={rate <= 0.5}>
-0.5
</button>
<button onClick={increaseRate} disabled={rate >= 4}>
+0.5
</button>
</p>
<Play howl={howl} rate={rate} onRate={action('onRate')} pause={!play}>
{({ playing }) => <>Playing: {playing().toString()}</>}
</Play>
</>
)
}
export const pause: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
return (
<>
<p>
Control playback with the <code>pause</code> prop.
</p>
<p>State: {state}</p>
<PlayPauseButton play={play} setPlay={setPlay} />
<Play howl={howl} pause={!play} onPlay={action('onPlay')} onPause={action('onPause')}>
{({ playing }) => <p>Playing: {playing().toString()}</p>}
</Play>
</>
)
}
export const volume: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
const [volume, setVolume] = useState(0.5)
return (
<>
<p>Set the volume. The Play element can change before and during playback.</p>
<p>State: {state}</p>
<div>
<label htmlFor="volume">Volume:</label>
<input
id="volume"
type="range"
min={0}
max={1}
step={0.05}
value={volume}
onChange={(event) => setVolume(parseFloat(event.target.value))}
/>
</div>
<PlayPauseButton play={play} setPlay={setPlay} />
{play && (
<Play howl={howl} volume={volume} onVolume={action('onVolume')}>
{({ playing }) => <>Playing: {playing().toString()}</>}
</Play>
)}
</>
)
}
export const mute: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
const [mute, setMute] = useState(true)
return (
<>
<p>State: {state}</p>
<PlayPauseButton play={play} setPlay={setPlay} />
<p>
{mute ? 'Muted.' : 'Unmuted.'} <button onClick={() => setMute(!mute)}>{mute ? 'Unmute 🔊' : 'Mute 🔇'}</button>
</p>
{play && (
<Play howl={howl} mute={mute} onPlay={action('onPlay')} onMute={action('onMute')}>
{({ playing }) => <>Playing: {playing().toString()}</>}
</Play>
)}
</>
)
}
export const fade: Story = () => {
const { howl, state } = useHowl({ src: sound1 })
const [play, setPlay] = useState(false)
const [silent, setSilent] = useState<undefined | boolean>(undefined)
const [fading, setFading] = useState(false)
// Request animation frames during fade.
const [, setTime] = useState(0)
const requestRef = useRef<number | null>(null)
const previousTimeRef = useRef(0)
const animate = (time: number) => {
if (previousTimeRef.current !== undefined) {
const deltaTime = time - previousTimeRef.current
setTime(deltaTime)
}
previousTimeRef.current = time
requestRef.current = requestAnimationFrame(animate)
}
useEffect(() => {
if (!fading) {
if (requestRef.current) cancelAnimationFrame(requestRef.current)
return
}
requestRef.current = requestAnimationFrame(animate)
return () => {
if (requestRef.current) cancelAnimationFrame(requestRef.current)
}
}, [fading])
return (
<>
<p>State: {state}</p>
<PlayPauseButton play={play} setPlay={setPlay} />
<>
<button
disabled={fading}
onClick={() => {
setFading(true)
setSilent(!silent)
}}
>
{fading ? (silent ? 'Fading out...' : 'Fading in...') : silent ? 'Fade in!' : 'Fade out!'}
</button>
<Play
howl={howl}
pause={!play}
fade={silent === undefined ? undefined : silent ? [1, 0, 2000] : [0, 1, 2000]}
onFade={() => setFading(false)}
>
{({ volume }) => <p>Volume is at {(volume() * 100).toFixed(0)}%</p>}
</Play>
</>
</>
)
}
export const seekWithScrubberBar: Story = () => {
const { howl } = useHowl({ src: sound1 })
const [targetSeek, setTargetSeek] = useState(0)
const [play, setPlay] = useState(false)
const [scrubbing, setScrubbing] = useState(false)
const [pauseDuringScrub, setPauseDuringScrub] = useState(true)
// Request animation frames in order to render seek smoothly.
const [, setTime] = useState(0)
const requestRef = useRef<number | null>(null)
const previousTimeRef = useRef(0)
const animate = (time: number) => {
if (previousTimeRef.current !== undefined) {
const deltaTime = time - previousTimeRef.current
setTime(deltaTime)
}
previousTimeRef.current = time
requestRef.current = requestAnimationFrame(animate)
}
useEffect(() => {
if (!play) return
requestRef.current = requestAnimationFrame(animate)
return () => {
if (requestRef.current) cancelAnimationFrame(requestRef.current)
}
}, [play])
return (
<>
<div>
<input
type="checkbox"
checked={pauseDuringScrub}
onChange={(event) => setPauseDuringScrub(event.target.checked)}
id="pause-during-scrub"
/>
<label htmlFor="pause-during-scrub">Pause while scrubbing</label>
</div>
<PlayPauseButton play={play} setPlay={setPlay} />
<Play
howl={howl}
seek={targetSeek}
pause={!play || (pauseDuringScrub && scrubbing)}
onEnd={() => setPlay(true)}
onSeek={action('onSeek')}
>
{({ seek, duration }) => {
const position = scrubbing && targetSeek !== undefined ? targetSeek : seek()
const length = duration()
return (
<div>
<p>
{position.toFixed(1)} / {length.toFixed(1)}
</p>
<input
type="range"
min={0}
max={length}
value={position}
step={0.1}
onChange={(e) => {
const changedPosition = parseFloat(e.target.value)
// Remove false positives caused by slow seek() update time.
setTargetSeek(changedPosition)
}}
onMouseDown={() => setTimeout(() => setScrubbing(true), 0)}
onMouseUp={() => setTimeout(() => setScrubbing(false), 0)}
/>
</div>
)
}}
</Play>
</>
)
}
export const basicSprite: Story = () => {
const [digit, setDigit] = useState(0)
const [loop, setLoop] = useState(false)
const { howl, state } = useHowl({
src: [sound2web, sound2mp3],
sprite: {
1: [0, 450],
2: [2000, 250],
3: [4000, 350],
4: [6000, 380],
5: [8000, 340],
},
})
return (
<>
<p>
All these digits are loaded from a single sound file and are controlled by one Howl. The Play component will
automatically start playing when the selected sprite changes.
</p>
<p>Selected digit: {digit}</p>
<p>State: {state}</p>
<div>
{[1, 2, 3, 4, 5].map((digit) => (
<button
key={digit}
onClick={() => {
setDigit(digit)
}}
>
{digit}
</button>
))}
</div>
<button onClick={() => setLoop(!loop)}>{loop ? 'Disable Looping' : 'Enable Looping'}</button>
{digit > 0 ? <Play howl={howl} sprite={`${digit}`} loop={loop} /> : null}
</>
)
}
type Digits = { digit: number; time: number }[]
export const complexSprite: Story = () => {
const [digits, setDigits] = useState<Digits>([])
const [playBeat, setPlayBeat] = useState(false)
const { howl, state } = useHowl({
src: [sound2web, sound2mp3],
sprite: {
1: [0, 450],
2: [2000, 250],
3: [4000, 350],
4: [6000, 380],
5: [8000, 340],
beat: [10000, 11163],
},
})
return (
<>
<p>All these sounds are loaded from a single sound file on one Howl.</p>
<p>Every time you click a digit, a Play is rendered and played until onEnd is called.</p>
<p>Go ahead, play a few sounds at once.</p>
<p>State: {state}</p>
<div>
{[1, 2, 3, 4, 5].map((digit) => (
<button
key={digit}
onClick={() => {
setDigits((digits) => [...digits, { digit, time: Date.now() }])
}}
>
{digit}
</button>
))}
</div>
<button onClick={() => setPlayBeat(!playBeat)}>{playBeat ? 'Pause Beat' : 'Play Beat'}</button>
<button
onClick={() => {
const now = Date.now()
setDigits((digits) => [
...digits,
{ digit: 5, time: now },
{ digit: 4, time: now + 1 },
{ digit: 3, time: now + 2 },
{ digit: 2, time: now + 3 },
{ digit: 1, time: now + 4 },
])
}}
>
Play all
</button>
<div>
<Play howl={howl} sprite="beat" loop pause={!playBeat}>
{({ playing }) => <p>Beat Playing: {playing().toString()}</p>}
</Play>
{digits.map(({ digit, time }) => (
<Play
howl={howl}
sprite={`${digit}`}
key={time}
onEnd={() =>
setDigits((digits) => {
const targetIndex = digits.findIndex((x) => x.time === time)
if (targetIndex < 0) return digits
return [...digits.slice(0, targetIndex), ...digits.slice(targetIndex + 1)]
})
}
>
{({ duration }) => (
<p>
Playing {digit} for {duration()}
</p>
)}
</Play>
))}
</div>
</>
)
}
export const errorBadSRC: Story = () => {
const { howl, state, error } = useHowl({ src: 'fake' })
return (
<>
{error && <p>Error: {[error.id, error.message].filter((x) => x).join(' ')} </p>}
<p>State: {state}</p>
<Play howl={howl} />
</>
)
}
export const howlDefaultVolume: Story = () => {
const [defaultVolume, setDefaultVolume] = useState(0)
const [playVolume, setPlayVolume] = useState(0)
const { howl } = useHowl({ src: sound1, defaultVolume })
const [play, setPlay] = useState(false)
return (
<>
<p>
Default volume on the howl is 0 to prevent clipping on quiet plays. This example is used for debug on slower
devices such as phones.
</p>
<div>
<label>
<input
type="radio"
name="default-volume"
checked={defaultVolume === 0}
value={0}
onChange={(event) => {
if (event.target.checked) {
setDefaultVolume(0)
}
}}
/>
Default volume 0
</label>
<label>
<input
type="radio"
name="default-volume"
checked={defaultVolume === 1}
value={1}
onChange={(event) => {
if (event.target.checked) {
setDefaultVolume(1)
}
}}
/>
Default volume 1
</label>
</div>
<div>
<label>
<input
type="radio"
name="play-volume"
checked={playVolume === 0}
value={0}
onChange={(event) => {
if (event.target.checked) {
setPlayVolume(0)
}
}}
/>
Play volume 0
</label>
<label>
<input
type="radio"
name="play-volume"
checked={playVolume === 1}
value={1}
onChange={(event) => {
if (event.target.checked) {
setPlayVolume(1)
}
}}
/>
Play volume 1
</label>
</div>
<PlayPauseButton play={play} setPlay={setPlay} />
{play && <Play howl={howl} volume={playVolume} seek={0.5} />}
</>
)
}
export const swapSource: Story = () => {
const srcs = ['nonexistent.mp3', sound1, sound2mp3]
const [useHtml5, setUseHtml5] = useState(false)
const [src, setSrc] = useState(srcs[0])
const { howl, state, error } = useHowl({ src: src, html5: useHtml5 })
return (
<>
<p>Every time a setting is changed on useHowl or Rehowl, the howl instance is reconstructed.</p>
<p>It's better to load multiple howls and use Play components than swap the source on a single howl.</p>
<p>In this example, you can change the howl's src and whether it's using HTML5 Audio or Web Audio.</p>
<p>
<strong>Select a sound to play</strong>
</p>
{srcs.map((srcChoice) => (
<div key={srcChoice}>
<label>
<input
type="radio"
name="source"
checked={srcChoice === src}
value={srcChoice}
onChange={(event) => {
if (event.target.checked) {
setSrc(srcChoice)
}
}}
/>
{srcChoice}
</label>
</div>
))}
<label style={{ display: 'block', marginTop: '1rem' }}>
<input type="checkbox" checked={useHtml5} onChange={(event) => setUseHtml5(event.target.checked)} id="html5" />
Use HTML 5 Audio
</label>
<p>
<strong>Info</strong>
</p>
{error && <p>Error: {[error.id, error.message].filter((x) => x).join(' ')} </p>}
<p>State: {state}</p>
<Play howl={howl}>{({ playing }) => <>Playing: {playing().toString()}</>}</Play>
</>
)
}