lbry-desktop/ui/component/fileThumbnail/view.jsx
infinite-persistence afe4fee3f3 Fallback image for <FileThumbnail>
## Ticket
5457 Create file thumbnail fallback image for odysee

## Approach
Since `background-image` does not invoke an `onerror` event, create a test Image instance to have the `onerror` capability. This technique is used by majority of plugins. No additional fetch is seen with this technique.
2021-08-17 19:46:54 -07:00

76 lines
2.2 KiB
JavaScript

// @flow
import type { Node } from 'react';
import { getThumbnailCdnUrl } from 'util/thumbnail';
import React from 'react';
import FreezeframeWrapper from './FreezeframeWrapper';
import Placeholder from './placeholder.png';
import { MISSING_THUMB_DEFAULT } from 'config';
import classnames from 'classnames';
import Thumb from './thumb';
type Props = {
uri: string,
thumbnail: ?string, // externally sourced image
children?: Node,
allowGifs: boolean,
claim: ?StreamClaim,
doResolveUri: (string) => void,
className?: string,
};
function FileThumbnail(props: Props) {
const { claim, uri, doResolveUri, thumbnail: rawThumbnail, children, allowGifs = false, className } = props;
const passedThumbnail = rawThumbnail && rawThumbnail.trim().replace(/^http:\/\//i, 'https://');
const thumbnailFromClaim =
uri && claim && claim.value && claim.value.thumbnail ? claim.value.thumbnail.url : undefined;
const thumbnail = passedThumbnail || thumbnailFromClaim;
const hasResolvedClaim = claim !== undefined;
const isGif = thumbnail && thumbnail.endsWith('gif');
React.useEffect(() => {
if (!hasResolvedClaim && uri) {
doResolveUri(uri);
}
}, [hasResolvedClaim, uri, doResolveUri]);
if (!allowGifs && isGif) {
return (
<FreezeframeWrapper src={thumbnail} className={classnames('media__thumb', className)}>
{children}
</FreezeframeWrapper>
);
}
const fallback = MISSING_THUMB_DEFAULT ? getThumbnailCdnUrl({ thumbnail: MISSING_THUMB_DEFAULT }) : undefined;
let url = thumbnail || (hasResolvedClaim ? Placeholder : '');
// @if TARGET='web'
// Pass image urls through a compression proxy
if (thumbnail && !(isGif && allowGifs)) {
url = getThumbnailCdnUrl({ thumbnail });
}
// @endif
const thumbnailUrl = url ? url.replace(/'/g, "\\'") : '';
if (hasResolvedClaim || thumbnailUrl) {
return (
<Thumb thumb={thumbnailUrl} fallback={fallback} className={className}>
{children}
</Thumb>
);
}
return (
<div
className={classnames('media__thumb', className, {
'media__thumb--resolving': !hasResolvedClaim,
})}
>
{children}
</div>
);
}
export default FileThumbnail;