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import PropTypes from "prop-types";
import Skeleton from "./Skeleton";
export const Thumbnail = ({
url = "https://nodejs.org/en/download/",
height: heightProp,
width: widthProp,
interactive = false,
iframeWidth: iframeWidthProp,
iframeHeight: iframeHeightProp,
style: customStyle,
onLoad,
...props
}) => {
const [loading, setLoading] = useState(true);
const [calculatedSize, setCalculatedSize] = useState({});
const ref = useRef(null);
useEffect(() => {
setCalculatedSize({
width: ref.current.offsetWidth,
height: ref.current.offsetHeight,
});
// console.log("width", ref.current ? ref.current.offsetWidth : 0);
// console.log("height", ref.current ? ref.current.offsetHeight : 0);
// console.log("----------------------------");
}, [ref.current?.offsetWidth, ref.current?.offsetHeight]);
let width;
if (!widthProp) {
width = "100%";
} else E{
width = `${widthProp}px`;
}
let height;
if (!heightProp) {
height = "100%";
} else {
height = `${heightProp}px`;
}
let aspectRatioHeight = 3;
let aspectRatioWidth = 4;
Iif (widthProp && heightProp) {
aspectRatioHeight = height;
aspectRatioWidth = width;
}
// Dealing with Height and Width
// Variables to do with size and scale:
// - width, height, iframeWidth, iframeHeight, xscale, yscale
let iframeWidth = iframeWidthProp;
let iframeHeight = iframeHeightProp;
if (!iframeWidth && !iframeHeight) {
iframeWidth = 1440;
iframeHeight = 1080;
} else Eif (iframeWidth && !iframeHeight) {
iframeHeight = iframeWidth * (aspectRatioHeight / aspectRatioWidth);
} else if (!iframeWidth && iframeHeight) {
iframeWidth = iframeHeight * (aspectRatioWidth / aspectRatioHeight);
}
const xscale = calculatedSize.width / iframeWidth;
const yscale = calculatedSize.height / iframeHeight;
const outerWrapper = {
display: "flex",
alignItems: "center",
justifyContent: "center",
width,
height,
};
const iframeWrapper = {
width: calculatedSize.width,
maxHeight: calculatedSize.height,
};
const iframe = {
transform: `scaleX(${xscale}) scaleY(${yscale})`,
transformOrigin: "0 0",
width: `${iframeWidth}px`,
height: `${iframeHeight}px`,
border: "0px",
};
const iframeShade = {
position: "absolute",
width: calculatedSize.width,
height: calculatedSize.height,
zIndex: "10",
};
const combinedOnLoad = () => {
if (onLoad) {
onLoad();
}
setLoading(false);
};
return (
<div
ref={ref}
style={{ ...outerWrapper, ...customStyle }}
data-testid="div-outer-wrapper"
>
{ref.current && (
<div style={iframeWrapper} data-testid="div-iframe-wrapper">
{!interactive && <div style={iframeShade}> </div>}
{loading && (
<div
className="skeleton-wrapper"
style={{
width: calculatedSize.width,
height: calculatedSize.height,
position: "absolute",
zIndex: "15",
}}
>
<Skeleton
style={{
width: calculatedSize.width,
height: calculatedSize.height,
}}
type="thumbnail"
width={calculatedSize.width}
height={calculatedSize.height}
/>
<div className="shimmer-wrapper">
<div className="shimmer"></div>
</div>
</div>
)}
<iframe
tabIndex="-1"
role="iframe"
style={iframe}
title="webpage-thumbnail"
src={url}
sandbox="allow-scripts allow-same-origin"
scrolling="no"
onLoad={combinedOnLoad}
{...props}
/>
</div>
)}
</div>
);
};
export default Thumbnail;
Thumbnail.propTypes = {
/**
* The url of the webpage to render the thumbnail for
*/
url: PropTypes.string,
/**
* The height of the entire component. iframe will be scaled down to this height. Defaults to be 100% of parent element
*/
height: PropTypes.number,
/**
* The width of the entire component. iframe will be scaled down to this width. Defaults to be 100% of parent element
*/
width: PropTypes.number,
/**
* Whether this iframe is to be static or interactive (clickable).
*/
interactive: PropTypes.bool,
/**
* The width of the iframe viewport. Defaults to 1440px if both iframewidth and iframeheight is not provided
*/
iframeWidth: PropTypes.number,
/**
* The height of the iframe viewport. Defaults to 1080px if both iframewidth and iframeheight is not provided
*/
iframeHeight: PropTypes.number,
/**
* customized styling to be passed to the wrapper (div) of the component consisting the iframe
*/
style: PropTypes.object,
/**
* customized function which will be called when iframed webpage finishes loading
*/
onLoad: PropTypes.func,
};
Thumbnail.defaultProps = {
url: "https://nodejs.org/en/download/",
interactive: false,
};
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