Files
legado/modules/web/src/views/BookChapter.vue
2023-05-11 08:17:00 +08:00

772 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': noPoint }">
<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
:contents="data.content"
:title="data.title"
:spacing="store.config.spacing"
:fontSize="fontSize"
:fontFamily="fontFamily"
v-if="showContent"
/>
</div>
<div class="loading" ref="loading"></div>
<div class="bottom-bar" ref="bottom"></div>
</div>
</div>
</div>
</template>
<script setup>
import jump from "@/plugins/jump";
import settings from "@/plugins/config";
import API from "@api";
import loadingSvg from "@element-plus/icons-svg/loading.svg?raw";
const showLoading = ref(false);
const loadingSerive = ref(null);
const content = ref();
watch(showLoading, (loading) => {
if (!loading) return loadingSerive.value?.close();
loadingSerive.value = ElLoading.service({
target: content.value,
spinner: loadingSvg,
text: "正在获取信息",
lock: true,
});
});
const store = useBookStore();
// 读取阅读配置
try {
const browerConfig = JSON.parse(localStorage.getItem("config"));
if (browerConfig != null) store.setConfig(browerConfig);
} catch {
localStorage.removeItem("config");
}
const loading = ref();
const noPoint = ref(true);
const showToolBar = ref(false);
const chapterData = ref([]);
const scrollObserve = ref(null);
const readingObserve = ref(null);
const {
catalog,
popCataVisible,
readSettingsVisible,
miniInterface,
showContent,
config,
readingBook,
} = storeToRefs(store);
const chapterPos = computed({
get: () => readingBook.value.chapterPos,
set: (value) => (readingBook.value.chapterPos = value),
});
const chapterIndex = computed({
get: () => readingBook.value.index,
set: (value) => (readingBook.value.index = value),
});
const theme = computed(() => config.value.theme);
const infiniteLoading = computed(() => config.value.infiniteLoading);
// 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 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",
};
});
const isNight = computed(() => theme.value == 6);
watchEffect(() => {
if (chapterData.value.length > 0) {
store.setContentLoading(false);
//添加章节内容到observe
addReadingObserve();
}
});
watchEffect(() => {
document.title = catalog.value[chapterIndex.value]?.title || document.title;
store.saveBookProcess();
});
watchEffect(() => {
if (!infiniteLoading.value) {
scrollObserve.value?.disconnect();
} else {
scrollObserve.value?.observe(loading.value);
}
});
const top = ref();
const getContent = (index, reloadChapter = true, chapterPos = 0) => {
if (reloadChapter) {
//展示进度条
store.setShowContent(false);
showLoading.value = true;
//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);
}
let bookUrl = sessionStorage.getItem("bookUrl");
let { title, index: chapterIndex } = catalog.value[index];
API.getBookContent(bookUrl, chapterIndex).then(
(res) => {
if (res.data.isSuccess) {
let data = res.data.data;
let content = data.split(/\n+/);
updateChapterData({ index, content, title }, reloadChapter);
if (reloadChapter) toChapterPos(chapterPos);
} else {
ElMessage({ message: res.data.errorMsg, type: "error" });
let content = [res.data.errorMsg];
updateChapterData({ index, content, title }, reloadChapter);
}
store.setContentLoading(true);
showLoading.value = false;
noPoint.value = false;
store.setShowContent(true);
if (!res.data.isSuccess) {
throw res.data;
}
},
(err) => {
ElMessage({ message: "获取章节内容失败", type: "error" });
let content = ["获取章节内容失败!"];
updateChapterData({ index, content, title }, reloadChapter);
showLoading.value = false;
store.setShowContent(true);
throw err;
}
);
};
const chapter = ref();
const toChapterPos = (pos) => {
nextTick(() => {
let wordCount = 0;
if (chapter.value.length != 1) return;
for (let element of chapter.value[0].children) {
wordCount += parseInt(element.getAttribute("wordCount")) + 1; //计算换行符
if (wordCount - 1 >= pos) {
//最后一段没有换行符
jump(element, {
duration: 0,
});
break;
}
}
});
};
//计算当前章节阅读的字数
const computeChapterPos = () => {
if (chapter.value.length == 0) return;
//计算当前阅读进度对应的element
let chapterElement = chapter.value.find(
(element) => element.getAttribute("chapterIndex") == chapterIndex.value
);
if (!chapterElement) return;
//计算已读字数
let mChapterPos = 0;
for (let paragraph of chapterElement.children) {
mChapterPos += parseInt(paragraph.getAttribute("wordCount")) + 1; //计算换行符
if (paragraph.getBoundingClientRect().top >= 0) {
chapterPos.value = mChapterPos - 1; //最后一段没有换行符
break;
}
}
};
const bottom = ref();
const toTop = () => {
jump(top.value);
};
const toBottom = () => {
jump(bottom.value);
};
const toNextChapter = () => {
store.setContentLoading(true);
let index = chapterIndex.value + 1;
if (typeof catalog.value[index] !== "undefined") {
ElMessage({
message: "下一章",
type: "info",
});
getContent(index);
} else {
ElMessage({
message: "本章是最后一章",
type: "error",
});
}
};
const toPreChapter = () => {
store.setContentLoading(true);
let index = chapterIndex.value - 1;
if (typeof catalog.value[index] !== "undefined") {
ElMessage({
message: "上一章",
type: "info",
});
getContent(index);
} else {
ElMessage({
message: "本章是第一章",
type: "error",
});
}
};
const saveReadingBookProgressToBrowser = (index, pos = chapterPos.value) => {
//保存localStorage
let bookUrl = sessionStorage.getItem("bookUrl");
var book = JSON.parse(localStorage.getItem(bookUrl));
book.index = index;
book.chapterPos = pos;
localStorage.setItem(bookUrl, JSON.stringify(book));
//最近阅读
book = JSON.parse(localStorage.getItem("readingRecent"));
book.chapterIndex = index;
book.chapterPos = pos;
localStorage.setItem("readingRecent", JSON.stringify(book));
//保存vuex
chapterIndex.value = index;
chapterPos.value = pos;
//保存sessionStorage
sessionStorage.setItem("chapterIndex", index);
sessionStorage.setItem("chapterPos", String(pos));
};
const updateChapterData = async (data, reloadChapter) => {
if (reloadChapter) {
chapterData.value.splice(0);
}
chapterData.value.push(data);
};
const loadMore = () => {
let index = chapterData.value.slice(-1)[0].index;
if (catalog.value.length - 1 > index) {
getContent(index + 1, false);
}
};
const router = useRouter();
const toShelf = () => {
router.push("/");
};
//监听方向键
const handleKeyPress = (event) => {
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({
message: "已到达页面顶部",
type: "warn",
});
} else {
jump(0 - document.documentElement.clientHeight + 100);
}
break;
case "ArrowDown":
event.stopPropagation();
event.preventDefault();
if (
document.documentElement.clientHeight +
document.documentElement.scrollTop ===
document.documentElement.scrollHeight
) {
ElMessage({
message: "已到达页面底部",
type: "warn",
});
} else {
jump(document.documentElement.clientHeight - 100);
}
break;
}
};
//IntersectionObserver回调 底部加载
const handleIScrollObserve = (entries) => {
if (showLoading.value) return;
for (let { isIntersecting } of entries) {
if (!isIntersecting) return;
loadMore();
}
};
//IntersectionObserver回调 当前阅读章节序号
const handleIReadingObserve = (entries) => {
nextTick(() => {
for (let { isIntersecting, target, boundingClientRect } of entries) {
let chapterTitleIndex = parseInt(target.getAttribute("chapterIndex"));
if (isIntersecting) {
chapterIndex.value = chapterTitleIndex;
} else {
if (boundingClientRect.top < 0) {
chapterIndex.value = chapterTitleIndex + 1;
} else {
chapterIndex.value = chapterTitleIndex - 1;
}
}
}
});
};
//添加所有章节到observe
const addReadingObserve = () => {
nextTick(() => {
let chapterElements = chapter.value;
if (!chapterElements) return;
chapterElements.forEach((el) => readingObserve.value.observe(el));
});
};
onBeforeRouteLeave((to, from, next) => {
computeChapterPos();
saveReadingBookProgressToBrowser(chapterIndex.value);
next();
});
/*
window.addEventListener("beforeunload", (e) => {
e.preventDefault();
e.returnValue = "";
alert(111);
});
*/
onMounted(() => {
showLoading.value = true;
//获取书籍数据
let bookUrl = sessionStorage.getItem("bookUrl");
let bookName = sessionStorage.getItem("bookName");
let bookAuthor = sessionStorage.getItem("bookAuthor");
let chapterIndex = Number(sessionStorage.getItem("chapterIndex") || 0);
let chapterPos = Number(sessionStorage.getItem("chapterPos") || 0);
var book = JSON.parse(localStorage.getItem(bookUrl));
if (
book == null ||
chapterIndex != book.index ||
chapterPos != book.chapterPos
) {
book = {
bookName: bookName,
bookAuthor: bookAuthor,
bookUrl: bookUrl,
index: chapterIndex,
chapterPos: chapterPos,
};
localStorage.setItem(bookUrl, JSON.stringify(book));
}
API.getChapterList(bookUrl).then(
(res) => {
showLoading.value = false;
if (!res.data.isSuccess) {
ElMessage({ message: res.data.errorMsg, type: "error" });
setTimeout(toShelf, 500);
return;
}
let data = res.data.data;
store.setCatalog(data);
store.setReadingBook(book);
// 目录使用虚拟列表显示,需要手动显示一次以便滚动到当前位置
store.popCataVisible = true;
getContent(chapterIndex, true, chapterPos);
window.addEventListener("keyup", handleKeyPress);
//监听底部加载
scrollObserve.value = new IntersectionObserver(handleIScrollObserve, {
rootMargin: "-100% 0% 20% 0%",
});
infiniteLoading.value && scrollObserve.value.observe(loading.value);
//监听当前阅读章节
readingObserve.value = new IntersectionObserver(handleIReadingObserve);
//第二次点击同一本书 页面标题不会变化
document.title = null;
document.title = bookName + " | " + catalog.value[chapterIndex].title;
},
(err) => {
showLoading.value = false;
ElMessage({ message: "获取书籍目录失败", type: "error" });
throw err;
}
);
});
onUnmounted(() => {
window.removeEventListener("keyup", handleKeyPress);
readSettingsVisible.value = false;
popCataVisible.value = false;
scrollObserve.value?.disconnect();
readingObserve.value?.disconnect();
});
</script>
<style lang="scss" scoped>
:deep(.pop-setting) {
margin-left: 68px;
top: 0;
}
:deep(.pop-cata) {
margin-left: 10px;
}
.chapter-wrapper {
padding: 0 4%;
flex-direction: column;
align-items: center;
: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;
:deep(.el-loading-mask) {
background-color: rgba(0, 0, 0, 0);
}
:deep(.el-loading-spinner) {
font-size: 36px;
color: #b5b5b5;
}
:deep(.el-loading-text) {
font-weight: 500;
color: #b5b5b5;
}
.content {
overflow: hidden;
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: 750px) {
.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>