61 lines
1.8 KiB
TypeScript
61 lines
1.8 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {useEffect, useMemo, useState} from 'react';
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import {thumbHashToDataURL} from 'thumbhash';
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import DeveloperOptionsStore from '~/stores/DeveloperOptionsStore';
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import * as ImageCacheUtils from '~/utils/ImageCacheUtils';
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interface MediaLoadingState {
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loaded: boolean;
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error: boolean;
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thumbHashURL?: string;
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}
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export function useMediaLoading(src: string, placeholder?: string): MediaLoadingState {
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const [loadingState, setLoadingState] = useState<Omit<MediaLoadingState, 'thumbHashURL'>>({
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loaded: ImageCacheUtils.hasImage(src),
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error: false,
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});
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const thumbHashURL = useMemo(() => {
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if (!placeholder) return;
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try {
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const bytes = Uint8Array.from(atob(placeholder), (c) => c.charCodeAt(0));
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return thumbHashToDataURL(bytes);
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} catch {
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return;
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}
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}, [placeholder]);
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useEffect(() => {
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if (DeveloperOptionsStore.forceRenderPlaceholders || DeveloperOptionsStore.forceMediaLoading) {
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return;
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}
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ImageCacheUtils.loadImage(
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src,
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() => setLoadingState({loaded: true, error: false}),
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() => setLoadingState({loaded: false, error: true}),
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);
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}, [src]);
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return {...loadingState, thumbHashURL};
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}
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