avatar badge code example
Example: Avatar/badge
import React, { useEffect, useRef } from "react";
import List from "@material-ui/core/List";
import t from "prop-types";
import { makeStyles } from "@material-ui/core/styles";
import { Avatar, Badge } from "@material-ui/core";
import withStyles from "@material-ui/core/styles/withStyles";
import IconButton from "@material-ui/core/IconButton";
import EditIcon from "@material-ui/icons/Edit";
import useTheme from "@material-ui/core/styles/useTheme";
import("screw-filereader");
const useStyles = makeStyles((theme) => ({
root: {
display: "flex",
"& > *": {
margin: theme.spacing(1)
}
},
form: {
display: "flex",
flexDirection: "column",
margin: "auto",
width: "fit-content"
},
input: {
fontSize: 15
},
large: {
width: theme.spacing(25),
height: theme.spacing(25),
border: `4px solid ${theme.palette.primary.main}`
}
}));
const EditIconButton = withStyles((theme) => ({
root: {
width: 22,
height: 22,
padding: 15,
border: `2px solid ${theme.palette.primary.main}`
}
}))(IconButton);
export const AvatarPicker = (props) => {
const [file, setFile] = React.useState("");
const theme = useTheme();
const classes = useStyles();
const imageRef = useRef();
const { handleChangeImage, avatarImage } = props;
useEffect(() => {
if (!file && avatarImage) {
setFile(URL.createObjectURL(avatarImage));
}
return () => {
if (file) URL.revokeObjectURL(file);
};
}, [file, avatarImage]);
const renderImage = (fileObject) => {
fileObject.image().then((img) => {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
const maxWidth = 256;
const maxHeight = 256;
const ratio = Math.min(maxWidth / img.width, maxHeight / img.height);
const width = (img.width * ratio + 0.5) | 0;
const height = (img.height * ratio + 0.5) | 0;
canvas.width = width;
canvas.height = height;
ctx.drawImage(img, 0, 0, width, height);
canvas.toBlob((blob) => {
const resizedFile = new File([blob], file.name, fileObject);
setFile(URL.createObjectURL(resizedFile));
handleChangeImage(resizedFile);
});
});
};
const showOpenFileDialog = () => {
imageRef.current.click();
};
const handleChange = (event) => {
const fileObject = event.target.files[0];
if (!fileObject) return;
renderImage(fileObject);
};
return (
<List data-testid={"image-upload"}>
<div
style={{
display: "flex",
justifyContent: "center",
margin: "20px 10px"
}}
>
<div className={classes.root}>
<Badge
overlap="circle"
anchorOrigin={{
vertical: "bottom",
horizontal: "right"
}}
badgeContent={
<EditIconButton
onClick={showOpenFileDialog}
style={{ background: theme.palette.primary.main }}
>
<EditIcon />
</EditIconButton>
}
>
<Avatar alt={"avatar"} src={file} className={classes.large} />
</Badge>
<input
ref={imageRef}
type="file"
style={{ display: "none" }}
accept="image/*"
onChange={handleChange}
/>
</div>
</div>
</List>
);
};
AvatarPicker.propTypes = {
handleChangeImage: t.func.isRequired,
avatarImage: t.object
};
export default AvatarPicker;