优化

闫增涛

2024-05-27 e260bcc1eac42ca8eb7f519148a42c945607d2a2

 src/books/childHealth/view/content/index.vue

@@ -1,20 +1,58 @@
<template>
  <div class="page-main" @scroll="throttledScrollHandler">
    <div class="page-content" :style="{fontSize: fontSize ? fontSize + 'px' : '16px',  
  transform: `scale(${pageZoom ? pageZoom : 1})`}">
      <pageHeader v-if="showCatalogList.indexOf(0) > -1"></pageHeader>
      <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
      <chapterTwo v-if="showCatalogList.indexOf(2) > -1"></chapterTwo>
      <chapterThree v-if="showCatalogList.indexOf(3) > -1"></chapterThree>
      <chapterFour v-if="showCatalogList.indexOf(4) > -1"></chapterFour>
      <chapterFive v-if="showCatalogList.indexOf(5) > -1"></chapterFive>
      <chapterSix v-if="showCatalogList.indexOf(6) > -1"></chapterSix>
      <chapterSeven v-if="showCatalogList.indexOf(7) > -1"></chapterSeven>
      <chapterEight v-if="showCatalogList.indexOf(8) > -1"></chapterEight>
      <chapterNine v-if="showCatalogList.indexOf(9) > -1"></chapterNine>
      <chapterTen v-if="showCatalogList.indexOf(10) > -1"></chapterTen>
      <chapterEleven v-if="showCatalogList.indexOf(11) > -1"></chapterEleven>
      <chapterTwelve v-if="showCatalogList.indexOf(12) > -1"></chapterTwelve>
    <div class="page-content">
      <pageHeader
        v-if="showCatalogList.indexOf(0) > -1"
        :showPageList="loadPageList"
      ></pageHeader>
      <chapterOne
        v-if="showCatalogList.indexOf(1) > -1"
        :showPageList="loadPageList"
      ></chapterOne>
      <chapterTwo
        v-if="showCatalogList.indexOf(2) > -1"
        :showPageList="loadPageList"
      ></chapterTwo>
      <chapterThree
        v-if="showCatalogList.indexOf(3) > -1"
        :showPageList="loadPageList"
      ></chapterThree>
      <chapterFour
        v-if="showCatalogList.indexOf(4) > -1"
        :showPageList="loadPageList"
      ></chapterFour>
      <chapterFive
        v-if="showCatalogList.indexOf(5) > -1"
        :showPageList="loadPageList"
      ></chapterFive>
      <chapterSix
        v-if="showCatalogList.indexOf(6) > -1"
        :showPageList="loadPageList"
      ></chapterSix>
      <chapterSeven
        v-if="showCatalogList.indexOf(7) > -1"
        :showPageList="loadPageList"
      ></chapterSeven>
      <chapterEight
        v-if="showCatalogList.indexOf(8) > -1"
        :showPageList="loadPageList"
      ></chapterEight>
      <chapterNine
        v-if="showCatalogList.indexOf(9) > -1"
        :showPageList="loadPageList"
      ></chapterNine>
      <chapterTen
        v-if="showCatalogList.indexOf(10) > -1"
        :showPageList="loadPageList"
      ></chapterTen>
      <chapterEleven
        v-if="showCatalogList.indexOf(11) > -1"
        :showPageList="loadPageList"
      ></chapterEleven>
      <chapterTwelve
        v-if="showCatalogList.indexOf(12) > -1"
        :showPageList="loadPageList"
      ></chapterTwelve>
      <chapterThirteen
        v-if="showCatalogList.indexOf(13) > -1"
      ></chapterThirteen>
@@ -48,16 +86,10 @@
      throttleThreshold: 100, // 节流阈值
      previousScrollTop: 0,
      throttledScrollHandler: null,
      observer: null
      observer: null,
      loadPageObserver: null,
      loadPageList: []
    };
  },
  computed:{
    fontSize() {
      return this.$store.state.qiankun.fontSize
    },
    pageZoom() {
      return this.$store.state.qiankun.scale / 100
    }
  },
  watch: {
    showCatalogList: {
@@ -74,6 +106,7 @@
        // 启动页码观察
        setTimeout(() => {
          this.initObservation();
          this.initThemeColor();
        }, 500);
      }
    }
@@ -113,9 +146,16 @@
      threshold: 0.5 // 指定交叉比例，这里设为 0.5，表示当目标元素一半或更多显示在视窗中时触发回调函数。
    });

    this.loadPageObserver = new IntersectionObserver(this.loadPageCallback, {
      root: null, // 指定根元素，这里设为 null，表示选取整个视窗作为根元素。
      rootMargin: "0px", // 指定根元素的边界，这里设为 "0px"，表示根元素的边界和视窗的边界重合
      threshold: 0 // 指定交叉比例，这里设为 0.5，表示当目标元素一半或更多显示在视窗中时触发回调函数。
    });

    // 启动页码观察
    setTimeout(() => {
      this.initObservation();
      this.initThemeColor();
    }, 500);

    // 测试页面跳转
@@ -213,6 +253,7 @@
        console.log("章节错误！");
      }
    },

    // 渲染标记
    renderSign(type, data) {
      const existence = (
@@ -243,7 +284,7 @@
            // 笔记
            pageDom.innerHTML = pageDom.innerHTML.replace(
              reg,
              `<span datatype="Note" dataid="${data.id}" style="border-bottom-color:${data.color}" class="notesline" onclick="signClick('Note','${data.id}','${data.chapterNum}')">${data.txt}<img src="${NoteIcon}" style="cursor: pointer" /></span>`
              `<span datatype="Note" dataid="${data.id}" style="border-bottom-color:${data.color}" class="notesline" onclick="signClick('Note','${data.id}','${data.chapterNum}')" onmouseover="noteHover('Note','${data.id}','${data.chapterNum}')">${data.txt}<img src="${NoteIcon}"/></span>`
            );
            break;
        }
@@ -277,15 +318,109 @@
      }
    },
    initObservation() {
      const sections = document.querySelectorAll(".page-box");
      //observer 观察每个元素，以便在它们进入或离开视窗时触发回调函数。
      const sections = (
        this.container ? this.container : document
      ).querySelectorAll(".page-box");
      sections.forEach((section) => {
        //observer 观察每个元素，以便在它们进入或离开视窗时触发回调函数。
        const isObserver = section.getAttribute("observer");
        const isLoadObserver = section.getAttribute("loadObserver");
        if (!isObserver) {
          this.observer.observe(section);
          section.setAttribute("observer", "1");
        }
        if (!isLoadObserver) {
          this.loadPageObserver.observe(section);
          section.setAttribute("loadObserver", "1");
        }
      });
    },
    initThemeColor() {
      // 获取各种需要主题色的节点
      const colorDom = (
        this.container ? this.container : document
      ).querySelectorAll(".theme-color");
      const backgroundColorDom = (
        this.container ? this.container : document
      ).querySelectorAll(".theme-back");
      const borderColorDom = (
        this.container ? this.container : document
      ).querySelectorAll(".theme-border");
      // 获取配置的主题色
      const bookThemeColor =
        this.config.activeBook && this.config.activeBook.bookThemeColor
          ? this.config.activeBook.bookThemeColor
          : null;
      const chapterThemeColor =
        this.config.activeBook && this.config.activeBook.chapterThemeColor
          ? this.config.activeBook.chapterThemeColor
          : null;
      const pageThemeColor =
        this.config.activeBook && this.config.activeBook.pageThemeColor
          ? this.config.activeBook.pageThemeColor
          : null;
      colorDom.forEach((domItem) => {
        // 获取章节、页码
        let pageDom = this.getParentWithClass(domItem, "page-box");
        let chapterDom = this.getParentWithClass(domItem, "chapter");
        let page, chapterNum;
        if (pageDom) page = pageDom.getAttribute("page");
        if (chapterDom) chapterNum = chapterDom.getAttribute("num");
        // 向上匹配主题色
        const themeColor =
          page && pageThemeColor && pageThemeColor[page]
            ? pageThemeColor[page]
            : chapterNum && chapterThemeColor && chapterThemeColor[chapterNum]
            ? chapterThemeColor[chapterNum]
            : bookThemeColor;
        if (themeColor) {
          domItem.style.color = themeColor;
        }
      });
      backgroundColorDom.forEach((domItem) => {
        // 获取章节、页码
        let pageDom = this.getParentWithClass(domItem, "page-box");
        let chapterDom = this.getParentWithClass(domItem, "chapter");
        let page, chapterNum;
        if (pageDom) page = pageDom.getAttribute("page");
        if (chapterDom) chapterNum = chapterDom.getAttribute("num");
        // 向上匹配主题色
        const themeColor =
          page && pageThemeColor && pageThemeColor[page]
            ? pageThemeColor[page]
            : chapterNum && chapterThemeColor && chapterThemeColor[chapterNum]
            ? chapterThemeColor[chapterNum]
            : bookThemeColor;
        if (themeColor) {
          domItem.style.backgroundColor = themeColor;
        }
      });
      borderColorDom.forEach((domItem) => {
        // 获取章节、页码
        let pageDom = this.getParentWithClass(domItem, "page-box");
        let chapterDom = this.getParentWithClass(domItem, "chapter");
        let page, chapterNum;
        if (pageDom) page = pageDom.getAttribute("page");
        if (chapterDom) chapterNum = chapterDom.getAttribute("num");
        // 向上匹配主题色
        const themeColor =
          page && pageThemeColor && pageThemeColor[page]
            ? pageThemeColor[page]
            : chapterNum && chapterThemeColor && chapterThemeColor[chapterNum]
            ? chapterThemeColor[chapterNum]
            : bookThemeColor;
        if (themeColor) {
          domItem.style.borderColor = themeColor;
        }
      });
    },
    getParentWithClass(element, className) {
      while (element.parentElement) {
        element = element.parentElement;
        if (element.classList.contains(className)) {
          return element;
        }
      }
    },
    pageChangeCallback(entries, observer) {
      //entries：代表观察到的目标元素的集合。 observer：代表观察者对象。
@@ -313,6 +448,18 @@
          //index：查找当前目标元素在 sections 数组中的索引，并加 1，用于确定当前页码。
        }
      });
    },
    loadPageCallback(entries, observer) {
      entries.forEach((entry) => {
        if (entry.isIntersecting) {
          const target = entry.target;
          const page = target.getAttribute("page");
          if (this.loadPageList.indexOf(page) == -1) {
            this.loadPageList.push(page);
            console.log(this.loadPageList,"this.loadPageList");
          }
        }
      });
    }
  },
  components: {