安知鱼主题默认幻灯片切换的样式美化

作为一个博客也好，网站也罢，个人观点，幻灯片展示内容板块必不可少，安知鱼主题自带一个幻灯片切换效果，需要在主题配置文件中打开。

1.开启 swiper 幻灯片

在安知鱼主题的 _config.yml 配置文件中，搜索 swiper，会找到如下代码

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swiper:
  enable: false
  swiper_css: https://npm.elemecdn.com/anzhiyu-theme-static@1.0.0/swiper/swiper.min.css #swiper css依赖
  swiper_js: https://npm.elemecdn.com/anzhiyu-theme-static@1.0.0/swiper/swiper.min.js #swiper js依赖

将里面 false 修改为 true，开启swiper幻灯片

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swiper:
  enable: true
  swiper_css: https://npm.elemecdn.com/anzhiyu-theme-static@1.0.0/swiper/swiper.min.css #swiper css依赖
  swiper_js: https://npm.elemecdn.com/anzhiyu-theme-static@1.0.0/swiper/swiper.min.js #swiper js依赖

2.CSS样式修改

在 /themes/anzhiyu/source/css_extra/home_top/ 文件夹中，找到 swiperstyle.css 样式文件，这个文件调控着默认幻灯片的样式，直接复制下面的代码替换掉源代码，就可以实现我的截图效果，不需要额外引入 CSS 样式文件

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#swiper_container_blog {
  width: 49%;
  transition: all 0.3s, width 0s;
  border-radius: 12px;
}
.swiper-wrapper {
  align-items: center;
}
div#swiper_container {
  transition: 0.3s;
}
/* 防止轮播图css未加载完时的超度横行滚动条 */
#swiper_container {
  overflow: hidden !important;
}
div.swiper_container_card {
  margin: 1rem auto 0;
}
@media screen and (max-width: 768px) {
  div.swiper_container_card {
    margin: 0.2rem auto 0;
  }
}
div#swiper_container {
  background: rgba(255, 255, 255, 0);
  width: 100%;
  padding: 0;
  overflow: initial;
  background: var(--card-bg);
  border-radius: 12px;
  border: var(--style-border);
}
div#swiper_container:hover {
  border: var(--style-border-hover);
  box-shadow: var(--anzhiyu-shadow-main);
}
.blog-slider {
  width: 100%;
  position: relative;
  border-radius: 12px 8px 8px 12px;
  margin: 0 auto;
}
.blog-slider__item {
  display: -webkit-box;
  display: -moz-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: box;
  display: flex;
  -webkit-box-align: center;
  -moz-box-align: center;
  -o-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}
.blog-slider__item.swiper-slide-active .blog-slider__img img {
  opacity: 1;
  -ms-filter: none;
  filter: none;
  -webkit-transition-delay: 0.3s;
  -moz-transition-delay: 0.3s;
  -o-transition-delay: 0.3s;
  -ms-transition-delay: 0.3s;
  transition-delay: 0.3s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > * {
  opacity: 1;
  -ms-filter: none;
  filter: none;
  -webkit-transform: none;
  -moz-transform: none;
  -o-transform: none;
  -ms-transform: none;
  transform: none;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(1) {
  -webkit-transition-delay: 0.3s;
  -moz-transition-delay: 0.3s;
  -o-transition-delay: 0.3s;
  -ms-transition-delay: 0.3s;
  transition-delay: 0.3s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(2) {
  -webkit-transition-delay: 0.4s;
  -moz-transition-delay: 0.4s;
  -o-transition-delay: 0.4s;
  -ms-transition-delay: 0.4s;
  transition-delay: 0.4s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(3) {
  -webkit-transition-delay: 0.5s;
  -moz-transition-delay: 0.5s;
  -o-transition-delay: 0.5s;
  -ms-transition-delay: 0.5s;
  transition-delay: 0.5s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(4) {
  -webkit-transition-delay: 0.6s;
  -moz-transition-delay: 0.6s;
  -o-transition-delay: 0.6s;
  -ms-transition-delay: 0.6s;
  transition-delay: 0.6s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(5) {
  -webkit-transition-delay: 0.7s;
  -moz-transition-delay: 0.7s;
  -o-transition-delay: 0.7s;
  -ms-transition-delay: 0.7s;
  transition-delay: 0.7s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(6) {
  -webkit-transition-delay: 0.8s;
  -moz-transition-delay: 0.8s;
  -o-transition-delay: 0.8s;
  -ms-transition-delay: 0.8s;
  transition-delay: 0.8s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(7) {
  -webkit-transition-delay: 0.9s;
  -moz-transition-delay: 0.9s;
  -o-transition-delay: 0.9s;
  -ms-transition-delay: 0.9s;
  transition-delay: 0.9s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(8) {
  -webkit-transition-delay: 1s;
  -moz-transition-delay: 1s;
  -o-transition-delay: 1s;
  -ms-transition-delay: 1s;
  transition-delay: 1s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(9) {
  -webkit-transition-delay: 1.1s;
  -moz-transition-delay: 1.1s;
  -o-transition-delay: 1.1s;
  -ms-transition-delay: 1.1s;
  transition-delay: 1.1s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(10) {
  -webkit-transition-delay: 1.2s;
  -moz-transition-delay: 1.2s;
  -o-transition-delay: 1.2s;
  -ms-transition-delay: 1.2s;
  transition-delay: 1.2s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(11) {
  -webkit-transition-delay: 1.3s;
  -moz-transition-delay: 1.3s;
  -o-transition-delay: 1.3s;
  -ms-transition-delay: 1.3s;
  transition-delay: 1.3s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(12) {
  -webkit-transition-delay: 1.4s;
  -moz-transition-delay: 1.4s;
  -o-transition-delay: 1.4s;
  -ms-transition-delay: 1.4s;
  transition-delay: 1.4s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(13) {
  -webkit-transition-delay: 1.5s;
  -moz-transition-delay: 1.5s;
  -o-transition-delay: 1.5s;
  -ms-transition-delay: 1.5s;
  transition-delay: 1.5s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(14) {
  -webkit-transition-delay: 1.6s;
  -moz-transition-delay: 1.6s;
  -o-transition-delay: 1.6s;
  -ms-transition-delay: 1.6s;
  transition-delay: 1.6s;
}
.blog-slider__item.swiper-slide-active .blog-slider__content > :nth-child(15) {
  -webkit-transition-delay: 1.7s;
  -moz-transition-delay: 1.7s;
  -o-transition-delay: 1.7s;
  -ms-transition-delay: 1.7s;
  transition-delay: 1.7s;
}
.blog-slider__img {
  width: 100%;
  height: 100%;
  -webkit-flex-shrink: 0;
  flex-shrink: 0;
  padding: 10px;
  border-radius: 5px;
  transform: translateX(0);
  overflow: hidden;
  position: absolute; 
  top: 0;
  left: 0;
  z-index: 1;
}
.blog-slider__img:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 5px;
  opacity: 0.8;
}
.blog-slider__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  border-radius: 5px;
  transition: all 0.3s;
}
.blog-slider__content {
  position: relative;
  z-index: 10; 
  padding: 30px; 
  color: #fff; 
  width: 100%; 
  height: 100%; 
  display: flex;
  flex-direction: column;
  justify-content: center; 
}
.blog-slider__content > * {
  opacity: 0;
  -webkit-transform: translateY(25px);
  -moz-transform: translateY(25px);
  -o-transform: translateY(25px);
  -ms-transform: translateY(25px);
  transform: translateY(25px);
  -webkit-transition: all 0.4s;
  -moz-transition: all 0.4s;
  -o-transition: all 0.4s;
  -ms-transition: all 0.4s;
  transition: all 0.4s;
}
.blog-slider__code {
  color: var(--font-color);
  color:white;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0;
  display: block;
  font-weight: 500;
}
.blog-slider__title {
  color:white;
  font-weight: 700;
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  -webkit-line-clamp: 1;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
}
.blog-slider__text {
  color:white;
  font-weight: 700;
  text-align: center;
  margin-bottom: 15px;
  line-height: 1.5em;
  width: 100%;
  height: 50px;
  word-break: break-all;
  word-wrap: break-word;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.blog-slider__button {
  display: -webkit-inline-box;
  display: -moz-inline-box;
  display: -webkit-inline-flex;
  display: -ms-inline-flexbox;
  display: inline-box;
  display: inline-flex;
  background-color: var(--btn-bg);
  padding: 4px 14px;
  border-radius: 8px;
  color: var(--btn-color);
  text-decoration: none;
  font-weight: 500;
  -webkit-box-pack: center;
  -moz-box-pack: center;
  -o-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  text-align: center;
  letter-spacing: 1px;
  display: none;
}
.blog-slider__button:hover {
  background-color: var(--btn-hover-color);
  color: var(--btn-color);
}
.blog-slider .swiper-container-horizontal > .swiper-pagination-bullets,
.blog-slider .swiper-pagination-custom,
.blog-slider .swiper-pagination-fraction {
  bottom: 10px;
  left: 0;
  width: 100%;
}
.blog-slider__pagination {
  position: absolute;
  z-index: 21;
  bottom: 25px !important;
  right: auto !important;
  top: auto !important;
  left: 50% !important;
  -webkit-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  -o-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}
.blog-slider .blog-slider__pagination.swiper-pagination-bullets .swiper-pagination-bullet {
  margin-left: 10px;
}
.blog-slider__pagination .swiper-pagination-bullet {
  width: 11px;
  height: 11px;
  display: block;
  border-radius: 50%; 
  background: white;
  opacity: 1;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -o-transition: all 0.3s;
  -ms-transition: all 0.3s;
  transition: all 0.3s; 
}
.blog-slider__pagination .swiper-pagination-bullet-active {
  opacity: 1;
  -ms-filter: none;
  filter: none;
  background: var(--btn-bg);
  width: 25px; 
  height: 11px; 
  border-radius: 6px; 
}
@media screen and (max-width: 768px) {
  .blog-slider__pagination {
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    transform: translateX(-50%);
    left: 50% !important;
    top: 320px;
    width: 100% !important;
    display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: box;
    display: flex;
    -webkit-box-pack: center;
    -moz-box-pack: center;
    -o-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -moz-box-align: center;
    -o-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
  }
  .blog-slider .blog-slider__pagination.swiper-pagination-bullets .swiper-pagination-bullet {
    margin: 0 5px;
  }
  .blog-slider__pagination .swiper-pagination-bullet-active {
    height: 11px;
    width: 30px;
  }
  .blog-slider__button {
    display: -webkit-inline-box;
    display: -moz-inline-box;
    display: -webkit-inline-flex;
    display: -ms-inline-flexbox;
    display: inline-box;
    display: inline-flex;
    width: 100%;
  }
  .blog-slider {
    min-height: 350px;
    height: auto;
    margin-bottom: 10px;
  }
  .blog-slider__content {
    text-align: center;
    padding: 0 30px;
  }
  .blog-slider__item {
    -webkit-box-orient: vertical;
    -moz-box-orient: vertical;
    -o-box-orient: vertical;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
  }
  .blog-slider__img {
    width: 100%;
    padding-top: 0;
  }
  .blog-slider__content {
    padding-left: 10px;
    padding-right: 10px;
    margin-top: 15px;
  }
  .blog-slider__pagination.swiper-pagination-clickable.swiper-pagination-bullets {
    top: 218px;
  }

  .swiper_container_card #swiper_container_blog div#swiper_container.blog-slider {
    padding: 10px;
    overflow: hidden;
  }
  .blog-slider__item .blog-slider__content .blog-slider__code {
    margin-top: 10px;
  }
  .blog-slider__title {
    margin-bottom: 0;
  }
}
@media screen and (min-width: 768px) {
  .blog-slider {
    height: 200px;
  }
  .blog-slider__img {
    height: 200px;
  }
}

@media screen and (max-width: 1200px) {
  div#swiper_container {
    width: 100%;
  }
  #swiper_container_blog {
    width: 99%;
  }
}

.swiper_container_card {
  display: flex !important;
  justify-content: space-around;
  flex-direction: row !important;
  user-select: none;
}

主要是调整了 swiper 默认 分页器 的位置，原来的幻灯片分页器在右侧边栏上，我给他调整到了幻灯片底部。

3.修改幻灯片调用

默认幻灯片调用代码修改，需要在 /themes/anzhiyu/layout/includes/top/ 文件夹中，修改 top.pug 文件，涉及到文件对缩进有严格要求，可以使用下面的代码整体替换掉文件代码

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- let home_top_config = theme.home_top
- let { title, subTitle, siteText,default_descr } = home_top_config
if home_top_config.enable
  #home_top
    .swiper_container_card(style='height: auto;width: 100%')
      #bannerGroup
        #random-banner
          if theme.peoplecanvas.enable
            canvas#peoplecanvas
          else 
            .banners-title
              .banners-title-big=title
              .banners-title-big=subTitle
              .banners-title-small=siteText
            include ../anzhiyu/tags-group-all.pug

          a#random-hover(href='javascript:toRandomPost()')
            i.anzhiyufont.anzhiyu-icon-paper-plane
            .bannerText 随便逛逛
              i.anzhiyufont.anzhiyu-icon-arrow-right
        .categoryGroup
          each item in home_top_config.category
            .categoryItem(style=`box-shadow:${item.shadow}`)
              a.categoryButton(href=url_for(item.path) class=`${item.class}`)
                span.categoryButtonText=item.name
                if (item.icon.startsWith("fa"))
                  i(class=`${item.icon}`)
                else if (item.icon.startsWith("icon"))
                  svg.icon(aria-hidden="true")
                    use(xlink:href=`#`+ item.icon)
                else if (item.icon.startsWith("anzhiyu"))
                  i.anzhiyufont(class=`${item.icon}`)
      if theme.home_top.swiper.enable
        #swiper_container_blog
          #swiper_container.blog-slider.swiper-container-fade.swiper-container-horizontal
            .blog-slider__wrp.swiper-wrapper(style='transition-duration: 0ms;')
              //- 文章卡片
              - let swiper_list = sort_attr_post("swiper_list")
              each item in swiper_list
                .blog-slider__item.swiper-slide(style='width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;')
                  a.blog-slider__img(href=item.path, title=item.title)
                    img(width='48' height='48'  src=item.cover alt='图片' onerror=`this.src=` + error_img + `; this.onerror = null;`)
                  .blog-slider__content
                    a.blog-slider__title(href=item.path, alt=item.title)= item.title
                    if (timemode === 'updated' )
                      span.blog-slider__code= item.updated.format('YYYY-MM-DD')
                    else
                      span.blog-slider__code= item.date.format('YYYY-MM-DD')
                    - const content = strip_html(item.content)
                    - let expert = content.substring(0, theme.index_post_content.length) 
                    - content.length > theme.index_post_content.length ? expert += ' ...' : ''
                    .blog-slider__text= item.description ? item.description : expert
                    a.blog-slider__button(href=item.path, alt=item.title) 详情   
            //- 轮播图组件
            .blog-slider__pagination.swiper-pagination-clickable.swiper-pagination-bullets

          #topPostGroup
            - let top_group_list = sort_attr_post("top_group_list").splice(0, 4)
            each item in top_group_list
              .top-group-list-item
                .post_cover.left_radius
                  a(href=item.path title=item.title)
                    span.top-group-text 荐
                    img.post_bg(alt=item.title, src=item.cover, onerror=`this.src=` + error_img + `; this.onerror = null;`)
                .top-group-info
                  a.article-title(href=item.path title=item.title)=item.title
            .top-group-list-none
            .top-group-list-none
            .top-group-list-none
      else 
        .topGroup
          - let top_group_list = sort_attr_post("top_group_list").splice(0, 6)
          - let top_group_banner_tips = theme.home_top.banner.tips
          - let top_group_banner_title = theme.home_top.banner.title
          - let top_group_banner_image = theme.home_top.banner.image
          - let top_group_banner_link = url_for(theme.home_top.banner.link)

          each item, index in top_group_list.slice(0, 6)
            .recent-post-item(onclick=`pjax.loadUrl("${url_for(item.path)}")`)
              .post_cover.left_radius
                a(href=item.path, title=item.title)
                  span.recent-post-top-text 荐
                  img.post_bg(onerror=`this.onerror=null;this.src='${url_for(theme.error_img.post_page)}'`, alt='cover',  src=item.cover)
              .recent-post-info
                a.article-title(href=item.path, title=item.title)=item.title
          a#todayCard.todayCard(href=top_group_banner_link, style='z-index: 1;')
            .todayCard-info
              .todayCard-tips=top_group_banner_tips
              .todayCard-title=top_group_banner_title
            img.todayCard-cover(src=url_for(top_group_banner_image) onerror=`this.onerror=null;this.src='${url_for(theme.error_img.post_page)}'` alt='封面')
            .banner-button-group
              .banner-button(onclick='event.stopPropagation();event.preventDefault();anzhiyu.hideTodayCard();')
                i.anzhiyufont.anzhiyu-icon-arrow-circle-right
                span.banner-button-text 更多推荐
        
        link(rel="stylesheet", href=theme.home_top.banner.top_group_banner_css)
      
  if theme.home_top.swiper.enable
    if !site.data.essay
      script(src=url_for(theme.home_top.swiper.swiper_js))
    script.
      function initBlogSlider() {
        var swiper = new Swiper(".blog-slider", {
          passiveListeners: true,
          spaceBetween: 30,
          effect: "fade",
          loop: true,
          autoplay: {
            disableOnInteraction: true,
            delay: 3000,
          },
          mousewheel: {
            passive: true, // 将 mousewheel 事件处理程序标记为被动的
          },
          // autoHeight: true,
          pagination: {
            el: ".blog-slider__pagination",
            clickable: true,
          },
        });

        var comtainer = document.getElementById("swiper_container");
        if (comtainer !== null) {
          comtainer.onmouseenter = function () {
            swiper.autoplay.stop();
          };
          comtainer.onmouseleave = function () {
            swiper.autoplay.start();
          };
        }
      }
      setTimeout(()=>{
        initBlogSlider()
      }, 100)

上面的代码需要重点关注

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if theme.home_top.swiper.enable
  #swiper_container_blog
    #swiper_container.blog-slider.swiper-container-fade.swiper-container-horizontal
      .blog-slider__wrp.swiper-wrapper(style='transition-duration: 0ms;')
        //- 文章卡片
        - let swiper_list = sort_attr_post("swiper_list")
        each item in swiper_list
          .blog-slider__item.swiper-slide(style='width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;')
            a.blog-slider__img(href=item.path, title=item.title)
              img(width='48' height='48'  src=item.cover alt='图片' onerror=`this.src=` + error_img + `; this.onerror = null;`)
            .blog-slider__content
              a.blog-slider__title(href=item.path, alt=item.title)= item.title
              if (timemode === 'updated' )
                span.blog-slider__code= item.updated.format('YYYY-MM-DD')
              else
                span.blog-slider__code= item.date.format('YYYY-MM-DD')
              - const content = strip_html(item.content)
              - let expert = content.substring(0, theme.index_post_content.length) 
              - content.length > theme.index_post_content.length ? expert += ' ...' : ''
              .blog-slider__text= item.description ? item.description : expert
              a.blog-slider__button(href=item.path, alt=item.title) 详情   
      //- 轮播图组件
      .blog-slider__pagination.swiper-pagination-clickable.swiper-pagination-bullets

我调整的调用顺序，是 标题 、时间 、文章简介，大家可以比对代码自己调整修改。

4.当前问题

仅仅是修改了 分页器 的位置，调整了 标题 、时间 、文章简介 调用顺序。

没有添加幻灯片特有的 左右切换箭头 。

调用的 swiper 文件都比较老旧，新版本 swiper 的 CSS 和 JS 文件都不适合这个老版本，这一点儿需要注意。

5.结束语

最后 Hexo 三板斧，就可以在页面侧边栏查看效果。欢迎大家在评论区给予指正，让我们共同打造快节奏时代，不受算法牵制的属于我们自己的小空间！