页码

闫增涛

2024-05-28 a47e8ae08413b99a7fcd4195a535687234b0160f

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

@@ -1,22 +1,79 @@
<template>
  <div class="page-main" @scroll="throttledScrollHandler">
    <div class="page-content">
      <pageHeader v-if="showCatalogList.indexOf(0) > -1"></pageHeader>
      <chapterOne v-if="showCatalogList.indexOf(1) > -1"></chapterOne>
      <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"
      :style="{
        fontSize: fontSize ? fontSize + 'px' : '16px',
        transform: `scale(${pageZoom ? pageZoom : 1})`,
        transformOrigin: 'center top'
      }"
    >
      <pageHeader
        v-if="showCatalogList.indexOf(0) > -1"
        :showPageList="loadPageList"
      ></pageHeader>
      <chapterOne
        v-if="showCatalogList.indexOf(1) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterOne>
      <chapterTwo
        v-if="showCatalogList.indexOf(2) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterTwo>
      <chapterThree
        v-if="showCatalogList.indexOf(3) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterThree>
      <chapterFour
        v-if="showCatalogList.indexOf(4) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterFour>
      <chapterFive
        v-if="showCatalogList.indexOf(5) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterFive>
      <chapterSix
        v-if="showCatalogList.indexOf(6) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterSix>
      <chapterSeven
        v-if="showCatalogList.indexOf(7) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterSeven>
      <chapterEight
        v-if="showCatalogList.indexOf(8) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterEight>
      <chapterNine
        v-if="showCatalogList.indexOf(9) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterNine>
      <chapterTen
        v-if="showCatalogList.indexOf(10) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterTen>
      <chapterEleven
        v-if="showCatalogList.indexOf(11) > -1"
        :showPageList="loadPageList"
        :questionData="questionData"
      ></chapterEleven>
      <chapterTwelve
        v-if="showCatalogList.indexOf(12) > -1"
        :showPageList="loadPageList"
      ></chapterTwelve>
      <chapterThirteen
        v-if="showCatalogList.indexOf(13) > -1"
        :showPageList="loadPageList"
      ></chapterThirteen>
    </div>
  </div>
@@ -37,9 +94,10 @@
import chapterEleven from "./components/chapter011.vue";
import chapterTwelve from "./components/chapter012.vue";
import chapterThirteen from "./components/chapter013.vue";

import NoteIcon from "@/assets/images/biji.png";
import _ from "lodash";

import getQuestionList from "@/assets/methods/examination";
import testData from "../../assets/examinationList";
export default {
  data() {
    return {
@@ -48,8 +106,40 @@
      loadThreshold: 300, // 触发加载阈值
      throttleThreshold: 100, // 节流阈值
      previousScrollTop: 0,
      throttledScrollHandler: null
      throttledScrollHandler: null,
      observer: null,
      loadPageObserver: null,
      loadPageList: [],
      questionData: {}
    };
  },
  computed: {
    fontSize() {
      return this.$store.state.qiankun.fontSize;
    },
    pageZoom() {
      return this.$store.state.qiankun.scale / 100;
    }
  },
  watch: {
    showCatalogList: {
      handler(newVal, oldVal) {
        if (
          this.$store.state.qiankun &&
          this.$store.state.qiankun.catalogChange
        ) {
          // 调用父层方法
          this.$store.state.qiankun.catalogChange({
            showCatalogList: newVal
          });
        }
        // 启动页码观察
        setTimeout(() => {
          this.initObservation();
          this.initThemeColor();
        }, 500);
      }
    }
  },
  mounted() {
    // 默认加载章节
@@ -60,24 +150,69 @@
      this.throttleThreshold,
      { leading: true, trailing: false }
    );
    // 提供页面跳转功能
    // 定义子层方法
    if (this.setGlobalState) {
      // 提供页面跳转功能
      this.setGlobalState({
        gotoPage: (catalog, page) => {
          this.gotoPage(catalog, page);
        },
        // 渲染笔记、高亮、划线
        renderSign: (type, data) => {
          this.renderSign(type, data);
        },
        // 删除笔记、高亮、划线
        delSign: (data) => {
          this.delSign(data);
        }
      });
    }

    // 创建一个新的 Intersection Observer 实例，用于观察目标元素和执行相应的回调函数。
    // new IntersectionObserver(callback, options)：使用之前定义的 callback 回调函数和 options 配置选项来初始化 Intersection Observer 实例。
    this.observer = new IntersectionObserver(this.pageChangeCallback, {
      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: 0.5 // 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
    // setTimeout(() => {
    //   this.gotoPage(5, 100);
    //   setTimeout(() => {
    //     this.renderSign("Note", {
    //       id: "2ACA9359",
    //       txt: "营养素和热量，才能",
    //       page: "100",
    //       type: "Highlight",
    //       color: "#F5E12A"
    //     });
    //     setTimeout(() => {
    //       this.delSign({
    //         ids: ["2ACA9359"]
    //       });
    //     }, 2000);
    //   }, 1000);
    // }, 3000);
  },
  methods: {
    scrollFun(e) {
    // 滚动监听
    scrollFun(event) {
      // 判断向上滚动还是向下滚动
      if (event.target.scrollTop > this.previousScrollTop) {
        console.log("向下滚动");
        // 向下
        const currentScrollTop =
          event.target.scrollTop + event.target.offsetHeight;
        if (
@@ -100,7 +235,7 @@
          }
        }
      } else if (event.target.scrollTop < this.previousScrollTop) {
        console.log("向上滚动");
        // 向上
        const currentScrollTop = event.target.scrollTop;
        if (currentScrollTop <= this.loadThreshold) {
          // 到达阈值
@@ -114,10 +249,11 @@
          }
        }
      }
      console.log(this.showCatalogList);
      // showCatalogList 当前显示的三个章节，watch监听传递给主应用
      // 更新上一次滚动的位置
      this.previousScrollTop = event.target.scrollTop;
    },
    // 章节、页面跳转
    gotoPage(catalog, page) {
      if (catalog >= 0 && catalog <= this.catalogLength) {
        // 处理渲染章节
@@ -134,17 +270,269 @@
        }
        setTimeout(() => {
          // 跳转页码
          const pageDom = document.querySelector(`[page="${page}"]`);
          const pageDom = (
            this.container ? this.container : document
          ).querySelector(`[page="${page}"]`);
          if (pageDom) {
            pageDom.scrollIntoView();
          } else {
            console.log("页码错误！");
          }
        }, 50);
        }, 500);
      } else {
        console.log("章节错误！");
      }
    }
    },

    // 渲染标记
    renderSign(type, data) {
      const existence = (
        this.container ? this.container : document
      ).querySelector(`[dataid="${data.id}"]`);
      // 去重
      if (!existence) {
        const pageDom = (
          this.container ? this.container : document
        ).querySelector(`[page="${data.page}"]`);
        let reg = new RegExp(`${data.txt}`, "ig");
        switch (type) {
          case "Highlight":
            // 高亮
            pageDom.innerHTML = pageDom.innerHTML.replace(
              reg,
              `<span datatype="Highlight" dataid="${data.id}" style="background: ${data.color};" class="highLight" onclick="signClick('Highlight','${data.id}','${data.chapterNum}')">${data.txt}</span>`
            );
            break;
          case "Dashing":
            // 划线
            pageDom.innerHTML = pageDom.innerHTML.replace(
              reg,
              `<span datatype="Dashing" dataid="${data.id}" style="text-decoration-color:${data.color};" class="underline" onclick="signClick('Dashing','${data.id}','${data.chapterNum}')">${data.txt}</span>`
            );
            break;
          case "Note":
            // 笔记
            pageDom.innerHTML = pageDom.innerHTML.replace(
              reg,
              `<span datatype="Note" dataid="${data.id}" style="border-bottom-color:${data.color}" class="notesline" onclick="signClick('Note','${data.id}','${data.chapterNum}')" onmouseover="noteHover('Note','${data.id}','${data.chapterNum}')" onmouseout="noteOut">${data.txt}<img src="${NoteIcon}"/></span>`
            );
            break;
        }
      }
    },
    // 删除标记渲染
    delSign({ ids, type }) {
      if (ids && ids.length) {
        for (let i = 0; i < ids.length; i++) {
          const id = ids[i];
          const dom = (
            this.container ? this.container : document
          ).querySelector(`[dataid="${id}"]`);
          dom.parentNode.innerHTML = dom.parentNode.innerHTML.replace(
            dom.outerHTML,
            dom.outerText
          );
        }
      }
      if (type) {
        const doms = (
          this.container ? this.container : document
        ).querySelectorAll(`[datatype="${type}"]`);
        for (let i = 0; i < doms.length; i++) {
          const dom = doms[i];
          dom.parentNode.innerHTML = dom.parentNode.innerHTML.replace(
            dom.outerHTML,
            dom.outerText
          );
        }
      }
    },
    initObservation() {
      const sections = (
        this.container ? this.container : document
      ).querySelectorAll(".page-box");
      sections.forEach((section) => {
        if (this.config.activeBook && this.config.activeBook.tryPageCount) {
          const page = section.getAttribute("page");
          if (Number(page) > this.config.activeBook.tryPageCount) {
            let chapterDom = this.getParentWithClass(section, "chapter");
            const chapterNum = chapterDom.getAttribute("num");
            this.catalogLength = Number(chapterNum) - 1;
            section.remove();
            return false;
          }
        }
        //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。
      entries.forEach((entry) => {
        //entry.isIntersecting：检查当前目标元素是否与根元素相交。
        if (entry.isIntersecting) {
          const target = entry.target;
          //entry.target：获取当前目标元素
          const page = target.getAttribute("page");
          const catalogDom = this.tool.getParentNodeByClassName(
            target,
            "chapter"
          );
          const catalog = catalogDom.getAttribute("num");
          console.log(page, "page", catalog, "catalog");
          // 返回页码和章节信息
          if (this.$store.state.qiankun && this.$store.state.qiankun.pageChange)
            this.$store.state.qiankun.pageChange({
              page: page,
              catalog: catalog
            });
          // const sections = Array.from(document.querySelectorAll(".section"));
          //sections：获取所有具有 .section 类名的元素，并转换为数组。
          // let index = sections.findIndex((section) => section === target) + 1;
          //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(async (entry) => {
        if (entry.isIntersecting) {
          const target = entry.target;
          const page = target.getAttribute("page");
          if (this.loadPageList.indexOf(page) == -1) {
            //
            const catalogDom = this.tool.getParentNodeByClassName(
              target,
              "chapter"
            );
            const catalog = catalogDom.getAttribute("num");
            if (!this.questionData[page]) {
              if (testData && testData[catalog]) {
                if (testData[catalog][page]) {
                  if (Array.isArray(testData[catalog][page])) {
                    this.questionData[page] = await getQuestionList(
                      page,
                      testData[catalog][page],
                      this.config.activeBook
                    );
                  } else {
                    const obj = {};
                    for (let key in testData[catalog][page]) {
                      obj[key] = await getQuestionList(
                        [],
                        testData[catalog][page][key],
                        this.config.activeBook
                      );
                    }
                    this.questionData[page] = obj;
                  }
                }
              }
            }
            this.loadPageList.push(Number(page));
            if (this.loadPageList.length > 5) {
              // 超过5页
              this.loadPageList.shift();
            }
          }
        }
      });
    },
  },
  components: {
    pageHeader,