77 lines
1.7 KiB
TypeScript
77 lines
1.7 KiB
TypeScript
import { asset } from "$fresh/runtime.ts";
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import * as CSS from "https://esm.sh/csstype@3.1.2";
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import { isLocalImage } from "@lib/string.ts";
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interface ResponsiveAttributes {
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srcset: string;
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sizes: string;
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}
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function generateResponsiveAttributes(
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imageUrl: string,
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widths: number[],
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baseApiUrl: string,
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sizes = "100vw",
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): ResponsiveAttributes {
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const srcsets: string[] = [];
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for (const width of widths) {
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const apiUrl = `${baseApiUrl}?image=${imageUrl}&width=${width}`;
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srcsets.push(`${apiUrl} ${width}w`);
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}
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const srcset = srcsets.join(", ");
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return {
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srcset,
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sizes,
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};
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}
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const widths = [320, 640, 960, 1280]; // List of widths for srcset
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const Image = (
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props: {
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class: string;
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src: string;
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alt?: string;
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thumbnail?: string;
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fill?: boolean;
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width?: number | string;
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height?: number | string;
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style?: CSS.HtmlAttributes;
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},
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) => {
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const responsiveAttributes: ResponsiveAttributes = isLocalImage(props.src)
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? generateResponsiveAttributes(props.src, widths, "/api/images")
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: { srcset: "", sizes: "" };
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return (
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<span
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style={{
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position: props.fill ? "absolute" : "",
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width: props.fill ? "100%" : "",
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height: props.fill ? "100%" : "",
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zIndex: props.fill ? -1 : "",
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}}
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data-thumb={props.thumbnail}
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>
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<img
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data-thumb={props.thumbnail}
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data-thumb-img
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loading="lazy"
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alt={props.alt}
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style={props.style}
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srcset={responsiveAttributes.srcset}
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sizes={responsiveAttributes.sizes}
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src={asset(props.src)}
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width={props.width}
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height={props.height}
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class={props.class}
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/>
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</span>
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);
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};
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export default Image;
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