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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| .with-indent { | ||
| :global { | ||
| ul .indent, | ||
| .paragraph .indent { | ||
| border-bottom: 1px solid #00b8bb41; | ||
| } | ||
|
|
||
| .paragraph:not(:nth-child(1)) > span.indent { | ||
| &:nth-child(1) { | ||
| margin-left: 2rem; | ||
| } | ||
| } | ||
|
|
||
| main { | ||
| > p:first-child { | ||
| margin-bottom: 2rem; | ||
| } | ||
|
|
||
| .paragraph:first-child::first-letter { | ||
| float: left; | ||
| font-size: 2.4em; | ||
| margin: 0 0.2em 0 0; | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| .with-serif { | ||
| :global { | ||
| main { | ||
| @apply font-serif; | ||
|
|
||
| font-size: 16px; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| import React from 'react' | ||
| import { useInView } from 'react-intersection-observer' | ||
| import type { FC, PropsWithChildren } from 'react' | ||
| import type { IntersectionOptions } from 'react-intersection-observer' | ||
|
|
||
| export type LazyLoadProps = { | ||
| offset?: number | ||
| placeholder?: React.ReactNode | ||
| } & IntersectionOptions | ||
| export const LazyLoad: FC<PropsWithChildren & LazyLoadProps> = (props) => { | ||
| const { placeholder = null, offset = 0, ...rest } = props | ||
| const { ref, inView } = useInView({ | ||
| triggerOnce: true, | ||
| rootMargin: `${offset || 0}px`, | ||
| ...rest, | ||
| }) | ||
| return ( | ||
| <> | ||
| <span data-testid="lazyload-indicator" ref={ref} /> | ||
| {!inView ? placeholder : props.children} | ||
| </> | ||
| ) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,271 @@ | ||
| import React, { | ||
| forwardRef, | ||
| memo, | ||
| useCallback, | ||
| useEffect, | ||
| useImperativeHandle, | ||
| useMemo, | ||
| useRef, | ||
| useState, | ||
| } from 'react' | ||
| import { clsx } from 'clsx' | ||
| import mediumZoom from 'medium-zoom' | ||
| import type { | ||
| CSSProperties, | ||
| DetailedHTMLProps, | ||
| FC, | ||
| ImgHTMLAttributes, | ||
| } from 'react' | ||
|
|
||
| import styles from './index.module.css' | ||
| import { useCalculateNaturalSize } from './use-calculate-size' | ||
|
|
||
| interface ImageProps { | ||
| defaultImage?: string | ||
| src: string | ||
| alt?: string | ||
| height?: number | string | ||
| width?: number | string | ||
| backgroundColor?: string | ||
| popup?: boolean | ||
| overflowHidden?: boolean | ||
| getParentElWidth?: ((parentElementWidth: number) => number) | number | ||
| showErrorMessage?: boolean | ||
| } | ||
|
|
||
| const Image: FC< | ||
| { | ||
| popup?: boolean | ||
| height?: number | string | ||
| width?: number | string | ||
| loaderFn: () => void | ||
| loaded: boolean | ||
| } & Pick< | ||
| DetailedHTMLProps<ImgHTMLAttributes<HTMLImageElement>, HTMLImageElement>, | ||
| 'src' | 'alt' | ||
| > | ||
| > = memo(({ src, alt, height, width, popup = false, loaded, loaderFn }) => { | ||
| const imageRef = useRef<HTMLImageElement>(null) | ||
|
|
||
| useEffect(() => { | ||
| if (!popup) { | ||
| return | ||
| } | ||
| const $image = imageRef.current | ||
| if ($image) { | ||
| const zoom = mediumZoom($image, { | ||
| background: 'var(--light-bg)', | ||
| }) | ||
|
|
||
| return () => { | ||
| zoom.detach(zoom.getImages()) | ||
| } | ||
| } | ||
| }, [popup]) | ||
|
|
||
| useEffect(() => { | ||
| loaderFn() | ||
| }, [loaderFn]) | ||
|
|
||
| return ( | ||
| <> | ||
| <div | ||
| className={clsx( | ||
| styles['lazyload-image'], | ||
| !loaded && styles['image-hide'], | ||
| )} | ||
| data-status={loaded ? 'loaded' : 'loading'} | ||
| onAnimationEnd={onImageAnimationEnd} | ||
| > | ||
| <img | ||
| src={src} | ||
| alt={alt} | ||
| ref={imageRef} | ||
| loading="lazy" | ||
| style={{ width, height }} | ||
| /> | ||
| </div> | ||
| </> | ||
| ) | ||
| }) | ||
|
|
||
| const onImageAnimationEnd: React.AnimationEventHandler<HTMLDivElement> = ( | ||
| e, | ||
| ) => { | ||
| ;(e.target as HTMLElement).dataset.animated = '1' | ||
| } | ||
|
|
||
| export type ImageLazyRef = { status: 'loading' | 'loaded' } | ||
|
|
||
| export const LazyImage = memo( | ||
| forwardRef< | ||
| ImageLazyRef, | ||
| ImageProps & | ||
| DetailedHTMLProps<ImgHTMLAttributes<HTMLImageElement>, HTMLImageElement> | ||
| >((props, ref) => { | ||
| const { | ||
| defaultImage, | ||
| src, | ||
| alt, | ||
| height, | ||
| width, | ||
| backgroundColor = 'rgb(111,111,111)', | ||
| popup = false, | ||
| style, | ||
| overflowHidden = false, | ||
| getParentElWidth = (w) => w, | ||
| showErrorMessage, | ||
| ...rest | ||
| } = props | ||
| useImperativeHandle(ref, () => { | ||
| return { | ||
| status: loaded ? 'loaded' : ('loading' as any), | ||
| } | ||
| }) | ||
| const realImageRef = useRef<HTMLImageElement>(null) | ||
| const placeholderRef = useRef<HTMLDivElement>(null) | ||
|
|
||
| const wrapRef = useRef<HTMLDivElement>(null) | ||
| const [calculatedSize, calculateDimensions] = useCalculateNaturalSize() | ||
|
|
||
| const [loaded, setLoad] = useState(false) | ||
| const loaderFn = useCallback(() => { | ||
| if (!src || loaded) { | ||
| return | ||
| } | ||
|
|
||
| const image = new window.Image() | ||
| image.src = src as string | ||
| // FIXME | ||
| const parentElement = wrapRef.current?.parentElement?.parentElement | ||
|
|
||
| if (!height && !width) { | ||
| calculateDimensions( | ||
| image, | ||
| typeof getParentElWidth == 'function' | ||
| ? getParentElWidth( | ||
| parentElement | ||
| ? parseFloat(getComputedStyle(parentElement).width) | ||
| : 0, | ||
| ) | ||
| : getParentElWidth, | ||
| ) | ||
| } | ||
|
|
||
| image.onload = () => { | ||
| setLoad(true) | ||
| try { | ||
| if (placeholderRef && placeholderRef.current) { | ||
| placeholderRef.current.classList.add('hide') | ||
| } | ||
|
|
||
| // eslint-disable-next-line no-empty | ||
| } catch {} | ||
| } | ||
| if (showErrorMessage) { | ||
| image.onerror = () => { | ||
| try { | ||
| if (placeholderRef && placeholderRef.current) { | ||
| placeholderRef.current.innerHTML = `<p style="color:${ | ||
| isDarkColorHex(backgroundColor) ? '#eee' : '#333' | ||
| };z-index:2"><span>图片加载失败!</span><br/> | ||
| <a style="margin: 0 12px;word-break:break-all;white-space:pre-wrap;display:inline-block;" href="${escapeHTMLTag( | ||
| image.src, | ||
| )}" target="_blank">${escapeHTMLTag(image.src)}</a></p>` | ||
| } | ||
| // eslint-disable-next-line no-empty | ||
| } catch {} | ||
| } | ||
| } | ||
| }, [ | ||
| src, | ||
| loaded, | ||
| height, | ||
| width, | ||
| calculateDimensions, | ||
| getParentElWidth, | ||
| backgroundColor, | ||
| showErrorMessage, | ||
| ]) | ||
| const memoPlaceholderImage = useMemo( | ||
| () => ( | ||
| <PlaceholderImage | ||
| height={height} | ||
| width={width} | ||
| backgroundColor={backgroundColor} | ||
| ref={placeholderRef} | ||
| /> | ||
| ), | ||
| [backgroundColor, height, width], | ||
| ) | ||
|
|
||
| const imageWrapperStyle = useMemo<CSSProperties>( | ||
| () => ({ | ||
| height: loaded ? undefined : height || calculatedSize.height, | ||
| width: loaded ? undefined : width || calculatedSize.width, | ||
|
|
||
| ...(overflowHidden ? { overflow: 'hidden', borderRadius: '3px' } : {}), | ||
| }), | ||
| [ | ||
| calculatedSize.height, | ||
| calculatedSize.width, | ||
| height, | ||
| loaded, | ||
| overflowHidden, | ||
| width, | ||
| ], | ||
| ) | ||
| return ( | ||
| <figure style={style} className="inline-block"> | ||
| {defaultImage ? ( | ||
| <img src={defaultImage} alt={alt} {...rest} ref={realImageRef} /> | ||
| ) : ( | ||
| <div | ||
| className={clsx( | ||
| 'relative m-auto inline-block min-h-[1px] max-w-full transition-none', | ||
| rest.className, | ||
| )} | ||
| style={imageWrapperStyle} | ||
| ref={wrapRef} | ||
| data-info={JSON.stringify({ height, width, calculatedSize })} | ||
| data-src={src} | ||
| > | ||
| <LazyLoad offset={100} placeholder={memoPlaceholderImage}> | ||
| <Image | ||
| src={src} | ||
| alt={alt} | ||
| height={height || calculatedSize.height} | ||
| width={width || calculatedSize.width} | ||
| popup={popup} | ||
| loaded={loaded} | ||
| loaderFn={loaderFn} | ||
| /> | ||
| {!loaded && memoPlaceholderImage} | ||
| </LazyLoad> | ||
| </div> | ||
| )} | ||
| {alt && <figcaption className={styles['img-alt']}>{alt}</figcaption>} | ||
| </figure> | ||
| ) | ||
| }), | ||
| ) | ||
|
|
||
| const PlaceholderImage = memo( | ||
| forwardRef< | ||
| HTMLDivElement, | ||
| { ref: any; className?: string } & Partial<ImageProps> | ||
| >((props, ref) => { | ||
| const { backgroundColor, height, width } = props | ||
| return ( | ||
| <div | ||
| className={clsx(styles['placeholder-image'], props.className)} | ||
| ref={ref} | ||
| style={{ | ||
| height, | ||
| width, | ||
| color: backgroundColor, | ||
| }} | ||
| /> | ||
| ) | ||
| }), | ||
| ) |
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