Aria Moradi
116 lines
3.0 KiB
TypeScript
116 lines
3.0 KiB
TypeScript
/* eslint-disable react/no-unused-prop-types */
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/* eslint-disable @typescript-eslint/no-unused-vars */
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/*
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* Copyright (C) Contributors to the Suwayomi project
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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import CircularProgress from '@material-ui/core/CircularProgress';
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import { makeStyles } from '@material-ui/core/styles';
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import React, { useEffect, useRef, useState } from 'react';
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import LazyLoad from 'react-lazyload';
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const useStyles = (settings: IReaderSettings) => makeStyles({
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loading: {
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margin: '100px auto',
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height: '100vh',
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width: '100vw',
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},
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loadingImage: {
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height: '100vh',
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width: '70vw',
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padding: '50px calc(50% - 20px)',
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backgroundColor: '#525252',
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marginBottom: 10,
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},
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image: {
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display: 'block',
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marginBottom: settings.readerType === 'ContinuesVertical' ? '15px' : 0,
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minWidth: '50vw',
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width: '100%',
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maxWidth: '100%',
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},
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});
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interface IProps {
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src: string
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index: number
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setCurPage: React.Dispatch<React.SetStateAction<number>>
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settings: IReaderSettings
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}
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function LazyImage(props: IProps) {
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const {
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src, index, setCurPage, settings,
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} = props;
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const classes = useStyles(settings)();
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const [imageSrc, setImagsrc] = useState<string>('');
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const ref = useRef<HTMLImageElement>(null);
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const handleScroll = () => {
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if (ref.current) {
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const rect = ref.current.getBoundingClientRect();
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if (rect.y < 0 && rect.y + rect.height > 0) {
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setCurPage(index);
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}
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}
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};
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useEffect(() => {
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if (settings.readerType === 'Webtoon' || settings.readerType === 'ContinuesVertical') {
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window.addEventListener('scroll', handleScroll);
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return () => {
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window.removeEventListener('scroll', handleScroll);
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};
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} return () => {};
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}, [handleScroll]);
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useEffect(() => {
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const img = new Image();
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img.src = src;
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img.onload = () => setImagsrc(src);
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}, [src]);
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if (imageSrc.length === 0) {
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return (
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<div className={`${classes.image} ${classes.loadingImage}`}>
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<CircularProgress thickness={5} />
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</div>
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);
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}
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return (
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<img
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className={classes.image}
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ref={ref}
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src={imageSrc}
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alt={`Page #${index}`}
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/>
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);
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}
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const Page = React.forwardRef((props: IProps, ref: any) => {
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const {
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src, index, setCurPage, settings,
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} = props;
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const classes = useStyles(settings)();
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return (
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<div ref={ref} style={{ margin: '0 auto' }}>
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<LazyImage
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src={src}
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index={index}
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setCurPage={setCurPage}
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settings={settings}
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/>
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</div>
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);
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});
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export default Page;
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