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authorcrupest <crupest@outlook.com>2020-08-04 02:31:59 +0800
committercrupest <crupest@outlook.com>2020-08-04 02:31:59 +0800
commit09b7e1f737659d0ee75e5ac2fd5c1decf8fa15a6 (patch)
treefe97f2ec93a81a83811f548707ac9825328c7b7e /Timeline/ClientApp/src/app/common/BlobImage.tsx
parent066e1c3214ee4a4de344ed6b0bd360d42933d490 (diff)
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-rw-r--r--Timeline/ClientApp/src/app/common/BlobImage.tsx27
1 files changed, 27 insertions, 0 deletions
diff --git a/Timeline/ClientApp/src/app/common/BlobImage.tsx b/Timeline/ClientApp/src/app/common/BlobImage.tsx
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+++ b/Timeline/ClientApp/src/app/common/BlobImage.tsx
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+import React from 'react';
+
+import { ExcludeKey } from '../utilities/type';
+
+const BlobImage: React.FC<
+ ExcludeKey<React.ImgHTMLAttributes<HTMLImageElement>, 'src'> & { blob?: Blob }
+> = (props) => {
+ const { blob, ...otherProps } = props;
+
+ const [url, setUrl] = React.useState<string | undefined>(undefined);
+
+ React.useEffect(() => {
+ if (blob != null) {
+ const url = URL.createObjectURL(blob);
+ setUrl(url);
+ return () => {
+ URL.revokeObjectURL(url);
+ };
+ } else {
+ setUrl(undefined);
+ }
+ }, [blob]);
+
+ return <img {...otherProps} src={url} />;
+};
+
+export default BlobImage;