signal-desktop/ts/components/PlaybackRateButton.tsx
2023-03-29 17:03:25 -07:00

107 lines
2.5 KiB
TypeScript

// Copyright 2022 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import classNames from 'classnames';
import React, { useCallback, useState } from 'react';
import { animated, useSpring } from '@react-spring/web';
import type { LocalizerType } from '../types/Util';
const SPRING_CONFIG = {
mass: 0.5,
tension: 350,
friction: 20,
velocity: 0.01,
};
type Props = {
// undefined if not playing
playbackRate: number | undefined;
variant: 'message-outgoing' | 'message-incoming' | 'mini-player';
onClick: () => void;
visible?: boolean;
i18n: LocalizerType;
};
export function PlaybackRateButton({
playbackRate,
variant,
visible = true,
i18n,
onClick,
}: Props): JSX.Element {
const [isDown, setIsDown] = useState(false);
const [animProps] = useSpring(
{
config: SPRING_CONFIG,
to: isDown ? { scale: 1.3 } : { scale: visible ? 1 : 0 },
},
[visible, isDown]
);
// Clicking button toggle playback
const onButtonClick = useCallback(
(event: React.MouseEvent) => {
event.stopPropagation();
event.preventDefault();
onClick();
},
[onClick]
);
// Keyboard playback toggle
const onButtonKeyDown = useCallback(
(event: React.KeyboardEvent) => {
if (event.key !== 'Enter' && event.key !== 'Space') {
return;
}
event.stopPropagation();
event.preventDefault();
onClick();
},
[onClick]
);
const playbackRateLabels: { [key: number]: string } = {
1: i18n('icu:MessageAudio--playbackRate1'),
1.5: i18n('icu:MessageAudio--playbackRate1p5'),
2: i18n('icu:MessageAudio--playbackRate2'),
0.5: i18n('icu:MessageAudio--playbackRatep5'),
};
const label = playbackRate
? playbackRateLabels[playbackRate].toString()
: undefined;
return (
<animated.div style={animProps}>
<button
type="button"
className={classNames(
'PlaybackRateButton',
`PlaybackRateButton--${variant}`
)}
onClick={onButtonClick}
onKeyDown={onButtonKeyDown}
onMouseDown={() => setIsDown(true)}
onMouseUp={() => setIsDown(false)}
onMouseLeave={() => setIsDown(false)}
aria-label={label}
tabIndex={0}
>
{label}
</button>
</animated.div>
);
}
const playbackRates = [1, 1.5, 2, 0.5];
PlaybackRateButton.nextPlaybackRate = (currentRate: number): number => {
// cycle through the rates
return playbackRates[
(playbackRates.indexOf(currentRate) + 1) % playbackRates.length
];
};