PaletteSwitcher/client/src/ImageInput.tsx

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2021-12-12 16:50:58 +00:00
import React, { FormEventHandler } from "react";
interface Props {
onImageSubmit: (image: Uint8ClampedArray) => void;
}
function ImageInput({ onImageSubmit }: Props) {
let fileReader: FileReader;
const fileInputRef = React.useRef<HTMLInputElement>(null);
const handleSubmit: FormEventHandler = (e) => {
e.preventDefault();
if (
!fileInputRef.current ||
!fileInputRef.current.files ||
fileInputRef.current.files.length === 0
) {
return;
}
fileReader = new FileReader();
fileReader.onloadend = handleFileRead;
fileReader.readAsArrayBuffer(fileInputRef.current.files[0]);
};
const handleFileRead: EventListener = (e) => {
if (fileReader.result) {
const image = new Uint8ClampedArray(fileReader.result as ArrayBuffer);
onImageSubmit(image);
}
};
return (
<form
className="grid grid-cols-1 max-w-md mx-auto my-4 px-2"
onSubmit={handleSubmit}
>
<label className="block">
<span>Select an image:</span>
<input
type="file"
accept="image/png, image/jpeg"
ref={fileInputRef}
className="block w-full mt-1 text-sm text-nord-0 file:mr-4 file:py-2 file:px-4 file:border-0 file:text-sm file:font-semibold file:bg-nord-4 file:text-nord-0 hover:file:bg-nord-5"
/>
</label>
{/* <label>
<span className="block">Select a color palette:</span>
<select className="form-select block w-full mt-1">
<option value="nord">Nord</option>
</select>
</label> */}
<button
type="submit"
value="Go"
className="block w-32 mx-auto mt-1 py-2 px-4 text-sm text-nord-0 bg-nord-4 hover:bg-nord-5"
>
Go
</button>
</form>
);
}
export default ImageInput;