116 lines
3.6 KiB
TypeScript
116 lines
3.6 KiB
TypeScript
import type { KeyboardShortcutContext } from '~/types/video';
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export const handlePlayPause = (ctx: KeyboardShortcutContext) => {
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if (ctx.video.paused) {
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ctx.video.play();
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} else {
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ctx.video.pause();
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}
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};
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export const handleRewind = (ctx: KeyboardShortcutContext, seconds: number = 10) => {
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ctx.video.currentTime = Math.max(0, ctx.video.currentTime - seconds);
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};
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export const handleForward = (ctx: KeyboardShortcutContext, seconds: number = 10) => {
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ctx.video.currentTime = Math.min(ctx.video.duration, ctx.video.currentTime + seconds);
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};
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export const handleMute = (ctx: KeyboardShortcutContext) => {
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ctx.video.muted = !ctx.video.muted;
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};
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export const handleVolumeChange = (ctx: KeyboardShortcutContext, delta: number) => {
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const newVolume = Math.max(0, Math.min(1, ctx.video.volume + delta));
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ctx.video.volume = newVolume;
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};
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export const handlePlaybackSpeedChange = (ctx: KeyboardShortcutContext, delta: number) => {
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const currentSpeed = ctx.video.playbackRate;
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const newSpeed = Math.max(0.25, Math.min(2, currentSpeed + delta));
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ctx.video.playbackRate = newSpeed;
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};
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export const handleFrameStep = (
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ctx: KeyboardShortcutContext,
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direction: 'forward' | 'backward' = 'forward',
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) => {
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if (!ctx.video.paused) {
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ctx.video.pause();
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}
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// Frame step by ~33ms (approximately 1 frame at 30fps, ~16.7ms at 60fps)
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const frameStep = 'forward' === direction ? 0.033 : -0.033;
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ctx.video.currentTime = Math.max(
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0,
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Math.min(ctx.video.duration, ctx.video.currentTime + frameStep),
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);
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};
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export const handleSeekToPercent = (ctx: KeyboardShortcutContext, percent: number) => {
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ctx.video.currentTime = (percent / 100) * ctx.video.duration;
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};
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export const handleSeekBackward = (ctx: KeyboardShortcutContext, seconds: number = 5) => {
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ctx.video.currentTime = Math.max(0, ctx.video.currentTime - seconds);
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};
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export const handleSeekForward = (ctx: KeyboardShortcutContext, seconds: number = 5) => {
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ctx.video.currentTime = Math.min(ctx.video.duration, ctx.video.currentTime + seconds);
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};
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export const handleFullscreen = (videoElement: HTMLVideoElement) => {
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if (!document.fullscreenElement) {
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videoElement.requestFullscreen().catch((err) => {
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console.error(`Error attempting to enable fullscreen: ${err.message}`);
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});
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} else {
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document.exitFullscreen();
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}
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};
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export const handlePictureInPicture = async (videoElement: HTMLVideoElement) => {
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try {
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if (document.pictureInPictureElement) {
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await document.exitPictureInPicture();
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} else if (document.pictureInPictureEnabled) {
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await videoElement.requestPictureInPicture();
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}
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} catch (error) {
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console.error(`Picture-in-Picture error: ${error}`);
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}
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};
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export const handleToggleCaptions = (videoElement: HTMLVideoElement) => {
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const textTracks = videoElement.textTracks;
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if (0 === textTracks.length) {
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return;
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}
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for (let i = 0; i < textTracks.length; i++) {
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const track = textTracks[i] as TextTrack | null;
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if (track && ('captions' === track.kind || 'subtitles' === track.kind)) {
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track.mode = 'showing' === track.mode ? 'hidden' : 'showing';
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break;
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}
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}
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};
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export const shouldHandleKeyboardShortcut = (event: KeyboardEvent): boolean => {
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const target = event.target as HTMLElement;
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const tagName = target?.tagName?.toLowerCase();
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if (
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'input' === tagName ||
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'textarea' === tagName ||
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'true' === target?.contentEditable ||
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'true' === target?.getAttribute('contenteditable')
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) {
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return false;
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}
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return true;
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};
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export const isModifierKey = (event: KeyboardEvent): boolean =>
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event.ctrlKey || event.metaKey || event.altKey;
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