Files
legado/modules/web/src/views/BookChapter.vue
2024-10-19 20:30:05 +08:00

771 lines
19 KiB
Vue

<template>
<div
class="chapter-wrapper"
:style="bodyTheme"
:class="{ night: isNight, day: !isNight }"
@click="showToolBar = !showToolBar"
>
<div class="tool-bar" :style="leftBarTheme">
<div class="tools">
<el-popover
placement="right"
:width="popupWidth"
trigger="click"
:show-arrow="false"
v-model:visible="popCataVisible"
popper-class="pop-cata"
>
<PopCatalog @getContent="getContent" class="popup" />
<template #reference>
<div class="tool-icon" :class="{ 'no-point': false }">
<div class="iconfont">&#58905;</div>
<div class="icon-text">目录</div>
</div>
</template>
</el-popover>
<el-popover
placement="right"
:width="popupWidth"
trigger="click"
:show-arrow="false"
v-model:visible="readSettingsVisible"
popper-class="pop-setting"
>
<read-settings class="popup" />
<template #reference>
<div class="tool-icon" :class="{ 'no-point': noPoint }">
<div class="iconfont">&#58971;</div>
<div class="icon-text">设置</div>
</div>
</template>
</el-popover>
<div class="tool-icon" @click="toShelf">
<div class="iconfont">&#58892;</div>
<div class="icon-text">书架</div>
</div>
<div class="tool-icon" :class="{ 'no-point': noPoint }" @click="toTop">
<div class="iconfont">&#58914;</div>
<div class="icon-text">顶部</div>
</div>
<div
class="tool-icon"
:class="{ 'no-point': noPoint }"
@click="toBottom"
>
<div class="iconfont">&#58915;</div>
<div class="icon-text">底部</div>
</div>
</div>
</div>
<div class="read-bar" :style="rightBarTheme">
<div class="tools">
<div
class="tool-icon"
:class="{ 'no-point': noPoint }"
@click="toPreChapter"
>
<div class="iconfont">&#58920;</div>
<span v-if="miniInterface">上一章</span>
</div>
<div
class="tool-icon"
:class="{ 'no-point': noPoint }"
@click="toNextChapter"
>
<span v-if="miniInterface">下一章</span>
<div class="iconfont">&#58913;</div>
</div>
</div>
</div>
<div class="chapter-bar"></div>
<div class="chapter" ref="content" :style="chapterTheme">
<div class="content">
<div class="top-bar" ref="top"></div>
<div
v-for="data in chapterData"
:key="data.index"
:chapterIndex="data.index"
ref="chapter"
>
<chapter-content
ref="chapterRef"
:chapterIndex="data.index"
:contents="data.content"
:title="data.title"
:spacing="store.config.spacing"
:fontSize="fontSize"
:fontFamily="fontFamily"
@readedLengthChange="onReadedLengthChange"
v-if="showContent"
/>
</div>
<div class="loading" ref="loading"></div>
<div class="bottom-bar" ref="bottom"></div>
</div>
</div>
</div>
</template>
<script setup lang="ts">
import jump from '@/plugins/jump'
import settings from '@/config/themeConfig'
import API from '@api'
import { useLoading } from '@/hooks/loading'
import { useThrottleFn } from '@vueuse/shared'
import { isNullOrBlank } from '@/utils/utils'
const content = ref()
// loading spinner
const { isLoading, loadingWrapper } = useLoading(content, '正在获取信息')
const store = useBookStore()
const {
catalog,
popCataVisible,
readSettingsVisible,
miniInterface,
showContent,
bookProgress,
theme,
isNight,
} = storeToRefs(store)
const chapterPos = computed({
get: () => store.readingBook.chapterPos,
set: value => (store.readingBook.chapterPos = value),
})
const chapterIndex = computed({
get: () => store.readingBook.chapterIndex,
set: value => (store.readingBook.chapterIndex = value),
})
const isSeachBook = computed({
get: () => store.readingBook.isSeachBook,
set: value => (store.readingBook.isSeachBook = value),
})
// 当前阅读书籍readingBook持久化
watch(
() => store.readingBook,
book => {
// 保存localStorage
// localStorage.setItem(book.bookUrl, JSON.stringify(book));
// 最近阅读
localStorage.setItem('readingRecent', JSON.stringify(book))
//保存 sessionStorage
sessionStorage.setItem('chapterIndex', book.chapterIndex.toString())
sessionStorage.setItem('chapterPos', book.chapterPos.toString())
},
{ deep: 1 },
)
// 无限滚动
const infiniteLoading = computed(() => store.config.infiniteLoading)
let scrollObserver: IntersectionObserver | null
const loading = ref()
watchEffect(() => {
if (!infiniteLoading.value) {
scrollObserver?.disconnect()
} else {
scrollObserver?.observe(loading.value)
}
})
const loadMore = () => {
const index = chapterData.value.slice(-1)[0].index
if (catalog.value.length - 1 > index) {
getContent(index + 1, false)
store.saveBookProgress() // 保存的是上一章的进度,不是预载的本章进度
}
}
// IntersectionObserver回调 底部加载
const onReachBottom = (entries: IntersectionObserverEntry[]) => {
if (isLoading.value) return
for (const { isIntersecting } of entries) {
if (!isIntersecting) return
loadMore()
}
}
// 字体
const fontFamily = computed(() => {
if (store.config.font >= 0) {
return settings.fonts[store.config.font]
}
return store.config.customFontName
})
const fontSize = computed(() => {
return store.config.fontSize + 'px'
})
// 主题部分
const bodyColor = computed(() => settings.themes[theme.value].body)
const chapterColor = computed(() => settings.themes[theme.value].content)
const popupColor = computed(() => settings.themes[theme.value].popup)
const readWidth = computed(() => {
if (!miniInterface.value) {
return store.config.readWidth - 130 + 'px'
} else {
return window.innerWidth + 'px'
}
})
const popupWidth = computed(() => {
if (!miniInterface.value) {
return store.config.readWidth - 33
} else {
return window.innerWidth - 33
}
})
const bodyTheme = computed(() => {
return {
background: bodyColor.value,
}
})
const chapterTheme = computed(() => {
return {
background: chapterColor.value,
width: readWidth.value,
}
})
const showToolBar = ref(false)
const leftBarTheme = computed(() => {
return {
background: popupColor.value,
marginLeft: miniInterface.value
? 0
: -(store.config.readWidth / 2 + 68) + 'px',
display: miniInterface.value && !showToolBar.value ? 'none' : 'block',
}
})
const rightBarTheme = computed(() => {
return {
background: popupColor.value,
marginRight: miniInterface.value
? 0
: -(store.config.readWidth / 2 + 52) + 'px',
display: miniInterface.value && !showToolBar.value ? 'none' : 'block',
}
})
/**
* pc移动端判断 最大阅读宽度修正
* 阅读宽度最小为640px 加上工具栏 68px 52px 取较大值 为 776px
*/
const onResize = () => {
store.setMiniInterface(window.innerWidth < 776)
const width = store.config.readWidth /**包含padding */
checkPageWidth(width)
}
/** 判断阅读宽度是否超出页面或者低于默认值640 */
const checkPageWidth = (readWidth: number) => {
if (store.miniInterface) return
if (readWidth < 640) store.config.readWidth = 640
if (readWidth + 2 * 68 > window.innerWidth) store.config.readWidth -= 160
}
watch(
() => store.config.readWidth,
width => checkPageWidth(width),
)
// 顶部底部跳转
const top = ref()
const bottom = ref()
const toTop = () => {
jump(top.value)
}
const toBottom = () => {
jump(bottom.value)
}
// 书架路由切换
const router = useRouter()
const toShelf = () => {
router.push('/')
}
// 获取章节内容
const chapterData = ref<{ index: number; content: string[]; title: string }[]>(
[],
)
const noPoint = ref(true)
const getContent = (index: number, reloadChapter = true, chapterPos = 0) => {
if (reloadChapter) {
//展示进度条
store.setShowContent(false)
//强制滚回顶层
jump(top.value, { duration: 0 })
//从目录,按钮切换章节时保存进度 预加载时不保存
saveReadingBookProgressToBrowser(index, chapterPos)
chapterData.value = []
}
const bookUrl = store.readingBook.bookUrl
const { title, index: chapterIndex } = catalog.value[index]
loadingWrapper(
API.getBookContent(bookUrl, chapterIndex).then(
res => {
if (res.data.isSuccess) {
const data = res.data.data
const content = data.split(/\n+/)
chapterData.value.push({ index, content, title })
if (reloadChapter) toChapterPos(chapterPos)
} else {
ElMessage({ message: res.data.errorMsg, type: 'error' })
const content = [res.data.errorMsg]
chapterData.value.push({ index, content, title })
}
store.setContentLoading(true)
noPoint.value = false
store.setShowContent(true)
if (!res.data.isSuccess) {
throw res.data
}
},
err => {
const content = ['获取章节内容失败!']
chapterData.value.push({ index, content, title })
store.setShowContent(true)
throw err
},
),
)
}
// 章节进度跳转和计算
const chapter = ref()
const chapterRef = ref()
const toChapterPos = (pos: number) => {
nextTick(() => {
if (chapterRef.value.length === 1)
chapterRef.value[0].scrollToReadedLength(pos)
})
}
// 60秒保存一次进度
const saveBookProgressThrottle = useThrottleFn(
() => store.saveBookProgress(),
60000,
)
const onReadedLengthChange = (index: number, pos: number) => {
saveReadingBookProgressToBrowser(index, pos)
saveBookProgressThrottle()
}
// 文档标题
watchEffect(() => {
document.title = catalog.value[chapterIndex.value]?.title || document.title
})
// 阅读记录保存浏览器
const saveReadingBookProgressToBrowser = (index: number, pos: number) => {
// 保存pinia
chapterIndex.value = index
chapterPos.value = pos
}
// 进度同步
// 返回导航变化 同步请求会在获取书架前完成
/**
* VisibilityChange https://developer.mozilla.org/zh-CN/docs/Web/API/Document/visibilitychange_event
* 监听关闭页面 切换tab 返回桌面 等操作
* 注意不用监听点击链接导航变化 不对Safari<14.5兼容处理
**/
const onVisibilityChange = () => {
const _bookProgress = bookProgress.value
if (document.visibilityState == 'hidden' && _bookProgress) {
store.saveBookProgress()
}
}
// 定时同步
// 章节切换
const toNextChapter = () => {
store.setContentLoading(true)
const index = chapterIndex.value + 1
if (typeof catalog.value[index] !== 'undefined') {
ElMessage({
message: '下一章',
type: 'info',
})
getContent(index)
store.saveBookProgress()
} else {
ElMessage({
message: '本章是最后一章',
type: 'error',
})
}
}
const toPreChapter = () => {
store.setContentLoading(true)
const index = chapterIndex.value - 1
if (typeof catalog.value[index] !== 'undefined') {
ElMessage({
message: '上一章',
type: 'info',
})
getContent(index)
store.saveBookProgress()
} else {
ElMessage({
message: '本章是第一章',
type: 'error',
})
}
}
let canJump = true
// 监听方向键
const handleKeyPress = (event: KeyboardEvent) => {
if (!canJump) return
switch (event.key) {
case 'ArrowLeft':
event.stopPropagation()
event.preventDefault()
toPreChapter()
break
case 'ArrowRight':
event.stopPropagation()
event.preventDefault()
toNextChapter()
break
case 'ArrowUp':
event.stopPropagation()
event.preventDefault()
if (document.documentElement.scrollTop === 0) {
ElMessage.warning('已到达页面顶部')
} else {
canJump = false
jump(0 - document.documentElement.clientHeight + 100, {
duration: store.config.jumpDuration,
callback: () => (canJump = true),
})
}
break
case 'ArrowDown':
event.stopPropagation()
event.preventDefault()
if (
document.documentElement.clientHeight +
document.documentElement.scrollTop ===
document.documentElement.scrollHeight
) {
ElMessage.warning('已到达页面底部')
} else {
canJump = false
jump(document.documentElement.clientHeight - 100, {
duration: store.config.jumpDuration,
callback: () => (canJump = true),
})
}
break
}
}
// 阻止默认滚动事件
const ignoreKeyPress = (event: KeyboardEvent) => {
if (event.key === 'ArrowUp' || event.key === 'ArrowDown') {
event.preventDefault()
event.stopPropagation()
}
}
onMounted(async () => {
await store.loadWebConfig()
//获取书籍数据
const bookUrl = sessionStorage.getItem('bookUrl')
const name = sessionStorage.getItem('bookName')
const author = sessionStorage.getItem('bookAuthor')
const chapterIndex = Number(sessionStorage.getItem('chapterIndex') || 0)
const chapterPos = Number(sessionStorage.getItem('chapterPos') || 0)
const isSeachBook = sessionStorage.getItem('isSeachBook') === 'true'
if (isNullOrBlank(bookUrl) || isNullOrBlank(name) || author === null) {
ElMessage.warning('书籍信息为空,即将自动返回书架页面...')
return setTimeout(toShelf, 500)
}
const book: typeof store.readingBook = {
// @ts-expect-error: bookUrl name author is NON_Blank string here
bookUrl,
// @ts-expect-error: bookUrl name author is NON_Blank string here
name,
author,
chapterIndex,
chapterPos,
isSeachBook,
}
onResize()
window.addEventListener('resize', onResize)
loadingWrapper(
store.loadWebCatalog(book).then(chapters => {
store.setReadingBook(book)
getContent(chapterIndex, true, chapterPos)
window.addEventListener('keyup', handleKeyPress)
window.addEventListener('keydown', ignoreKeyPress)
// 兼容Safari < 14
document.addEventListener('visibilitychange', onVisibilityChange)
//监听底部加载
scrollObserver = new IntersectionObserver(onReachBottom, {
rootMargin: '-100% 0% 20% 0%',
})
if (infiniteLoading.value === true) scrollObserver.observe(loading.value)
//第二次点击同一本书 页面标题不会变化
document.title = '...'
document.title = (name as string) + ' | ' + chapters[chapterIndex].title
}),
)
})
onUnmounted(() => {
window.removeEventListener('keyup', handleKeyPress)
window.removeEventListener('keydown', ignoreKeyPress)
window.removeEventListener('resize', onResize)
// 兼容Safari < 14
document.removeEventListener('visibilitychange', onVisibilityChange)
readSettingsVisible.value = false
popCataVisible.value = false
scrollObserver?.disconnect()
scrollObserver = null
})
const addToBookShelfConfirm = async () => {
const book = store.readingBook
// 阅读的是搜索的书籍 并未在书架
if (book.isSeachBook === true) {
await ElMessageBox.confirm(`是否将《${book.name}》放入书架?`, '放入书架', {
confirmButtonText: '确认',
cancelButtonText: '否',
type: 'info',
/*
ElMessageBox.confirm默认在触发hashChange事件时自动关闭
按下物理返回键时触发hashChange事件
使用router.push("/")则不会触发hashChange事件
*/
closeOnHashChange: false,
})
.then(() => {
//选择是,无动作
isSeachBook.value = false
})
.catch(async () => {
//选择否,删除书籍
await API.deleteBook(book)
})
.finally(() => sessionStorage.removeItem('isSeachBook'))
}
}
onBeforeRouteLeave(async (to, from, next) => {
console.log('onBeforeRouteLeave')
// 弹窗时停止响应按键翻页
window.removeEventListener('keyup', handleKeyPress)
await addToBookShelfConfirm()
next()
})
</script>
<style lang="scss" scoped>
:deep(.pop-setting) {
margin-left: 68px;
top: 0;
}
:deep(.pop-cata) {
margin-left: 10px;
}
.chapter-wrapper {
padding: 0 4%;
overflow-x: hidden;
:deep(.no-point) {
pointer-events: none;
}
.tool-bar {
position: fixed;
top: 0;
left: 50%;
z-index: 100;
.tools {
display: flex;
flex-direction: column;
.tool-icon {
font-size: 18px;
width: 58px;
height: 48px;
text-align: center;
padding-top: 12px;
cursor: pointer;
outline: none;
.iconfont {
font-family: iconfont;
width: 16px;
height: 16px;
font-size: 16px;
margin: 0 auto 6px;
}
.icon-text {
font-size: 12px;
}
}
}
}
.read-bar {
position: fixed;
bottom: 0;
right: 50%;
z-index: 100;
.tools {
display: flex;
flex-direction: column;
.tool-icon {
font-size: 18px;
width: 42px;
height: 31px;
padding-top: 12px;
text-align: center;
align-items: center;
cursor: pointer;
outline: none;
margin-top: -1px;
.iconfont {
font-family: iconfont;
width: 16px;
height: 16px;
font-size: 16px;
margin: 0 auto 6px;
}
}
}
}
.chapter {
font-family: 'Microsoft YaHei', PingFangSC-Regular, HelveticaNeue-Light,
'Helvetica Neue Light', sans-serif;
text-align: left;
padding: 0 65px;
min-height: 100vh;
width: 670px;
margin: 0 auto;
.content {
font-size: 18px;
line-height: 1.8;
font-family: 'Microsoft YaHei', PingFangSC-Regular, HelveticaNeue-Light,
'Helvetica Neue Light', sans-serif;
.bottom-bar,
.top-bar {
height: 64px;
}
}
}
}
.day {
:deep(.popup) {
box-shadow:
0 2px 4px rgba(0, 0, 0, 0.12),
0 0 6px rgba(0, 0, 0, 0.04);
}
:deep(.tool-icon) {
border: 1px solid rgba(0, 0, 0, 0.1);
margin-top: -1px;
color: #000;
.icon-text {
color: rgba(0, 0, 0, 0.4);
}
}
:deep(.chapter) {
border: 1px solid #d8d8d8;
color: #262626;
}
}
.night {
:deep(.popup) {
box-shadow:
0 2px 4px rgba(0, 0, 0, 0.48),
0 0 6px rgba(0, 0, 0, 0.16);
}
:deep(.tool-icon) {
border: 1px solid #444;
margin-top: -1px;
color: #666;
.icon-text {
color: #666;
}
}
:deep(.chapter) {
border: 1px solid #444;
color: #666;
}
:deep(.popper__arrow) {
background: #666;
}
}
@media screen and (max-width: 776px) {
.chapter-wrapper {
padding: 0;
.tool-bar {
left: 0;
width: 100vw;
margin-left: 0 !important;
.tools {
flex-direction: row;
justify-content: space-between;
.tool-icon {
border: none;
}
}
}
.read-bar {
right: 0;
width: 100vw;
margin-right: 0 !important;
.tools {
flex-direction: row;
justify-content: space-between;
padding: 0 15px;
.tool-icon {
border: none;
width: auto;
.iconfont {
display: inline-block;
}
}
}
}
.chapter {
width: 100vw !important;
padding: 0 20px;
box-sizing: border-box;
}
}
}
</style>