mirror of https://github.com/langgenius/dify.git
104 lines
3.4 KiB
TypeScript
104 lines
3.4 KiB
TypeScript
import type { FC } from 'react'
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import { createPortal } from 'react-dom'
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import 'react-pdf-highlighter/dist/style.css'
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import { PdfHighlighter, PdfLoader } from 'react-pdf-highlighter'
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import { t } from 'i18next'
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import { RiCloseLine, RiZoomInLine, RiZoomOutLine } from '@remixicon/react'
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import React, { useState } from 'react'
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import { useHotkeys } from 'react-hotkeys-hook'
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import Loading from '@/app/components/base/loading'
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import useBreakpoints, { MediaType } from '@/hooks/use-breakpoints'
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import Tooltip from '@/app/components/base/tooltip'
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import { noop } from 'lodash-es'
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type PdfPreviewProps = {
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url: string
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onCancel: () => void
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}
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const PdfPreview: FC<PdfPreviewProps> = ({
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url,
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onCancel,
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}) => {
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const media = useBreakpoints()
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const [scale, setScale] = useState(1)
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const [position, setPosition] = useState({ x: 0, y: 0 })
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const isMobile = media === MediaType.mobile
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const zoomIn = () => {
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setScale(prevScale => Math.min(prevScale * 1.2, 15))
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setPosition({ x: position.x - 50, y: position.y - 50 })
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}
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const zoomOut = () => {
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setScale((prevScale) => {
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const newScale = Math.max(prevScale / 1.2, 0.5)
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if (newScale === 1)
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setPosition({ x: 0, y: 0 })
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else
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setPosition({ x: position.x + 50, y: position.y + 50 })
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return newScale
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})
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}
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useHotkeys('esc', onCancel)
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useHotkeys('up', zoomIn)
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useHotkeys('down', zoomOut)
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return createPortal(
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<div
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className={`fixed inset-0 z-[1000] flex items-center justify-center bg-black/80 ${!isMobile && 'p-8'}`}
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onClick={e => e.stopPropagation()}
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tabIndex={-1}
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>
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<div
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className='h-[95vh] max-h-full w-[100vw] max-w-full overflow-hidden'
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style={{ transform: `scale(${scale})`, transformOrigin: 'center', scrollbarWidth: 'none', msOverflowStyle: 'none' }}
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>
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<PdfLoader
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workerSrc='/pdf.worker.min.mjs'
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url={url}
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beforeLoad={<div className='flex h-64 items-center justify-center'><Loading type='app' /></div>}
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>
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{(pdfDocument) => {
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return (
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<PdfHighlighter
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pdfDocument={pdfDocument}
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enableAreaSelection={event => event.altKey}
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scrollRef={noop}
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onScrollChange={noop}
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onSelectionFinished={() => null}
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highlightTransform={() => { return <div/> }}
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highlights={[]}
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/>
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)
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}}
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</PdfLoader>
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</div>
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<Tooltip popupContent={t('common.operation.zoomOut')}>
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<div className='absolute right-24 top-6 flex h-8 w-8 cursor-pointer items-center justify-center rounded-lg'
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onClick={zoomOut}>
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<RiZoomOutLine className='h-4 w-4 text-gray-500'/>
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</div>
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</Tooltip>
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<Tooltip popupContent={t('common.operation.zoomIn')}>
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<div className='absolute right-16 top-6 flex h-8 w-8 cursor-pointer items-center justify-center rounded-lg'
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onClick={zoomIn}>
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<RiZoomInLine className='h-4 w-4 text-gray-500'/>
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</div>
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</Tooltip>
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<Tooltip popupContent={t('common.operation.cancel')}>
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<div
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className='absolute right-6 top-6 flex h-8 w-8 cursor-pointer items-center justify-center rounded-lg bg-white/8 backdrop-blur-[2px]'
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onClick={onCancel}>
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<RiCloseLine className='h-4 w-4 text-gray-500'/>
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</div>
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</Tooltip>
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</div>,
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document.body,
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)
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}
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export default PdfPreview
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