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authorcrupest <crupest@outlook.com>2020-10-31 00:42:06 +0800
committerGitHub <noreply@github.com>2020-10-31 00:42:06 +0800
commita3c97f6fb6313da2e8c0fac0b4c08f2ef4265d0f (patch)
treeee006874b0c93e9bfc76f141a092a8b9585a1f95 /FrontEnd/src/app/views/common/BlobImage.tsx
parent0c4caaebe2480e77918d5d7df234f0edaeab74ba (diff)
parent7ce0846d9ec968da3ea4f7ebcc6db26db8e49089 (diff)
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Merge pull request #161 from crupest/upgrade
Upgrade packages and split front end and back end.
Diffstat (limited to 'FrontEnd/src/app/views/common/BlobImage.tsx')
-rw-r--r--FrontEnd/src/app/views/common/BlobImage.tsx27
1 files changed, 27 insertions, 0 deletions
diff --git a/FrontEnd/src/app/views/common/BlobImage.tsx b/FrontEnd/src/app/views/common/BlobImage.tsx
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index 00000000..0dd25c52
--- /dev/null
+++ b/FrontEnd/src/app/views/common/BlobImage.tsx
@@ -0,0 +1,27 @@
+import React from "react";
+
+const BlobImage: React.FC<
+ Omit<React.ImgHTMLAttributes<HTMLImageElement>, "src"> & {
+ blob?: Blob | unknown;
+ }
+> = (props) => {
+ const { blob, ...otherProps } = props;
+
+ const [url, setUrl] = React.useState<string | undefined>(undefined);
+
+ React.useEffect(() => {
+ if (blob instanceof Blob) {
+ const url = URL.createObjectURL(blob);
+ setUrl(url);
+ return () => {
+ URL.revokeObjectURL(url);
+ };
+ } else {
+ setUrl(undefined);
+ }
+ }, [blob]);
+
+ return <img {...otherProps} src={url} />;
+};
+
+export default BlobImage;