给Hexo Next主题添加首页轮播图

发表于 更新于 分类于 阅读次数： Waline： 本文字数： 12k

本博客首页设置了轮播图，大家可以去看一下效果。

 下面教大家如何给自己的的博客添加首页轮播图!

 在themes\next\layout\_macro目录下新建carousel.swig文件，里面粘贴入提下代码：

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{% if theme.carousel.enable %}
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<meta name="referrer" content="no-referrer" />
<style type="text/css">
.glyphicon-chevron-left:before{
	 content: "《" 
}
.glyphicon-chevron-right:before{
	 content: "》" 
}

.right-siders{
   border-radius: 10px;
   margin-bottom: 5px;
}

.my-carousel:hover{
  margin-left: 5px;
  border-radius: 5px;
  transform: scale(1.1);
  box-shadow: 10px 10px 15px 2px rgba(0,0,0,.12), 0 0 6px 0 rgba(104, 104, 105, 0.1);
}

.carousel{
                border-radius: 20px;
	width: 100%;
	height: 280px;
	position: relative;
                margin-top: 20px;
}

@media all and (max-width: 768px){
	.carousel{
                                border-radius: 20px;
		width: 100% !important;
		height: 103px !important;
		position: relative;
	}
}

.carousel-inner {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100%
}
.carousel-inner > .item {
  display: none;
  position: relative;
  -webkit-transition: 0.6s ease-in-out left;
  -o-transition: 0.6s ease-in-out left;
  transition: 0.6s ease-in-out left;
}
.carousel-inner > .item > img,
.carousel-inner > .item > a > img {
  line-height: 1;
}
@media all and (transform-3d), (-webkit-transform-3d) {
  .carousel-inner > .item {
    -webkit-transition: -webkit-transform 0.6s ease-in-out;
    -moz-transition: -moz-transform 0.6s ease-in-out;
    -o-transition: -o-transform 0.6s ease-in-out;
    transition: transform 0.6s ease-in-out;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-perspective: 1000px;
    -moz-perspective: 1000px;
    perspective: 1000px;
  }
  .carousel-inner > .item.next,
  .carousel-inner > .item.active.right {
    -webkit-transform: translate3d(100%, 0, 0);
    transform: translate3d(100%, 0, 0);
    left: 0;
  }
  .carousel-inner > .item.prev,
  .carousel-inner > .item.active.left {
    -webkit-transform: translate3d(-100%, 0, 0);
    transform: translate3d(-100%, 0, 0);
    left: 0;
  }
  .carousel-inner > .item.next.left,
  .carousel-inner > .item.prev.right,
  .carousel-inner > .item.active {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    left: 0;
  }
}
.carousel-inner > .active,
.carousel-inner > .next,
.carousel-inner > .prev {
  display: block;
}
.carousel-inner > .active {
  left: 0;
}
.carousel-inner > .next,
.carousel-inner > .prev {
  position: absolute;
  top: 0;
  width: 100%;
}
.carousel-inner > .next {
  left: 100%;
}
.carousel-inner > .prev {
  left: -100%;
}
.carousel-inner > .next.left,
.carousel-inner > .prev.right {
  left: 0;
}
.carousel-inner > .active.left {
  left: -100%;
}
.carousel-inner > .active.right {
  left: 100%;
}
.carousel-control {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  opacity: 0.5;
  filter: alpha(opacity=50);
  font-size: 20px;
  color: #fff;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  background-color: rgba(0, 0, 0, 0);
}
.carousel-control.left {
  background-image: -webkit-linear-gradient(left, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.0001) 100%);
  background-image: -o-linear-gradient(left, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.0001) 100%);
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.0001) 100%);
  background-repeat: repeat-x;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#80000000, endColorstr=#00000000, GradientType=1);
}
.carousel-control.right {
  left: auto;
  right: 0;
  background-image: -webkit-linear-gradient(left, rgba(0, 0, 0, 0.0001) 0%, rgba(0, 0, 0, 0.5) 100%);
  background-image: -o-linear-gradient(left, rgba(0, 0, 0, 0.0001) 0%, rgba(0, 0, 0, 0.5) 100%);
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0.0001) 0%, rgba(0, 0, 0, 0.5) 100%);
  background-repeat: repeat-x;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#00000000, endColorstr=#80000000, GradientType=1);
}
.carousel-control:hover,
.carousel-control:focus {
  outline: 0;
  color: #fff;
  text-decoration: none;
  opacity: 0.9;
  filter: alpha(opacity=90);
}
.carousel-control .icon-prev,
.carousel-control .icon-next,
.carousel-control .glyphicon-chevron-left,
.carousel-control .glyphicon-chevron-right {
  position: absolute;
  top: 50%;
  margin-top: -10px;
  z-index: 5;
  display: inline-block;
}

.carousel-control .icon-prev,
.carousel-control .glyphicon-chevron-left {
  background-position-y: -20px;
  left: 9px;
}

@media all and (max-width: 768px){
.carousel-control .icon-prev,
.carousel-control .glyphicon-chevron-left {
  background-position-y: -20px;
  left: 0px;
}
}

.carousel-control .icon-next,
.carousel-control .glyphicon-chevron-right {
  /*background: url('/images/icon-slides.png');*/
  background-position-x: -50px;
  background-position-y: -20px;
  right: 0px;
}

.carousel-control .icon-prev,
.carousel-control .icon-next {
  width: 20px;
  height: 20px;
  line-height: 1;
  font-family: serif;
}

.carousel-control .icon-prev:before {
  content: 2039;
}
.carousel-control .icon-next:before {
  content: 203a;
}

.carousel-indicators {
  position: absolute;
  bottom: -25px;
  left: 50%;
  z-index: 15;
  width: 60%;
  margin-left: -30%;
  padding-left: 0;
  list-style: none;
  text-align: center;
}
.carousel-indicators li {
  display: inline-block;
  width: 30px;
  height: 3px;
  margin: 5px;
  text-indent: -999px;
  border: 1px solid #bbb;
  border-radius: 10px;
  cursor: pointer;
  background-color: rgba(0, 0, 0, .24);
}
.carousel-indicators .active {
  width: 30px;
  height: 3px;
  background-color: #fff;
}
.carousel-caption {
  position: absolute;
  left: 15%;
  right: 15%;
  bottom: 20px;
  z-index: 10;
  padding-top: 20px;
  padding-bottom: 20px;
  color: #fff;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}
.carousel-caption .btn {
  text-shadow: none;
}
@media screen and (min-width: 768px) {
  .carousel-control .glyphicon-chevron-left,
  .carousel-control .glyphicon-chevron-right,
  .carousel-control .icon-prev,
  .carousel-control .icon-next {
    width: 30px;
    height: 30px;
    margin-top: -10px;
    font-size: 30px;
  }
  .carousel-control .glyphicon-chevron-left,
  .carousel-control .icon-prev {
    margin-left: -10px;
  }
  .carousel-control .glyphicon-chevron-right,
  .carousel-control .icon-next {
  }
  .carousel-caption {
    left: 20%;
    right: 20%;
    padding-bottom: 30px;
  }
  .carousel-indicators {
    bottom: -10px;
  }
}
@media all and (max-width: 768px){
.carousel-indicators li {
  display: inline-block;
  width: 20px !important;
  height: 3px;
  margin: 2.1px !important;
  text-indent: -999px;
  border: 1px solid #bbb;
  border-radius: 10px;
  cursor: pointer;
  background-color: rgba(0, 0, 0, .24);
}
.carousel-indicators .active {
  width: 20px !important;
  height: 3px;
  background-color: #fff;
}
}
</style>
    <div id="myCarousel" class="carousel slide"   height="100%" data-ride="carousel" data-interval="3500">
      <!-- 轮播（Carousel）指标 -->
      <ol class="carousel-indicators">
      {% set index = 0 %}
      {% for item in theme.carousel.item %}
        <li data-target="#myCarousel" data-slide-to="{{index}}"></li>
        {% set index = index+1 %}
      {% endfor %}
      </ol>
      <!-- 轮播（Carousel）项目 -->
      <div class="carousel-inner" style="border: 0px; border-radius: 20px; width: 100%;">
       {% set act = 0 %}
       {% for item in theme.carousel.item %}
          {% if act===0 %}
          <a class="item active" href="{{ url_for(item.link) }}" target="_blank" style="height: 100%;">
            {# 添加 class="nofancybox" 解决fancybox和图片链接冲突 #}
            <img src="{{item.img}}" class="nofancybox"  style="width: 100%; height: 100%" >
          </a>
          {% set act = 1 %}
          {% elseif act===1 %}
            <a class="item" href="{{ url_for(item.link) }}" target="_blank" style="height: 100%;">
              <img src="{{item.img}}" class="nofancybox"  style="width: 100%; height: 100%;" >
            </a>
        {% endif %}
      {% endfor %}
      </div>
      <!-- 轮播（Carousel）导航 -->
      <a class="left carousel-control" data-target="#myCarousel" href="javascript:void(0);" role="button" data-slide="prev">
          <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
      </a>
      <a class="right carousel-control" data-target="#myCarousel" href="javascript:void(0);" role="button" data-slide="next">
          <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
      </a>
</div>
{% endif %}

 在themes\next\layout\index.swig中找到{% block content %},在其下方加上如下代码(引入新建的carousel.swig文件):

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{% include '_macro/carousel.swig' %}

 在主题配置文件的末尾加上如下代码:

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# 配置首页轮播图
carousel: 
   enable: true
   item: [
      {    
        'link':'文章链接地址', 
        'img':'图片链接地址'
      },
      {      
         'link':'文章链接地址',   
         'img':'图片链接地址'
      },
   ]

完成以上配置后,轮播图就已经实现了,但是可能还会出现以下问题,比如有些用户开着FancyBox功能,这将会导致点击轮播图片的时候出现如下错误:

链接无法跳转

 为了解决这个问题,可以在themes\next\source\js\utils.js的如下位置加上第八行代码(next版本不同,utils.js文件的位置也可能不同,大家可以自行查找):

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/**
 * Wrap images with fancybox.
 */
wrapImageWithFancyBox: function() {
    document.querySelectorAll('.post-body :not(a) > img, .post-body > img').forEach(element => {
      var $image = $(element);
        /*解决fancybox和图片链接冲突*/
+      if ($(this).hasClass('nofancybox')) return;
        
      var imageLink = $image.attr('data-src') || $image.attr('src');
      var $imageWrapLink = $image.wrap(`<a class="fancybox fancybox.image" href="${imageLink}" itemscope itemtype="http://schema.org/ImageObject" itemprop="url"></a>`).parent('a');
      if ($image.is('.post-gallery img')) {
        $imageWrapLink.attr('data-fancybox', 'gallery').attr('rel', 'gallery');
      } else if ($image.is('.group-picture img')) {
        $imageWrapLink.attr('data-fancybox', 'group').attr('rel', 'group');
      } else {
        $imageWrapLink.attr('data-fancybox', 'default').attr('rel', 'default');
      }

      var imageTitle = $image.attr('title') || $image.attr('alt');
      if (imageTitle) {
        $imageWrapLink.append(`<p class="image-caption">${imageTitle}</p>`);
        // Make sure img title tag will show correctly in fancybox
        $imageWrapLink.attr('title', imageTitle).attr('data-caption', imageTitle);
      }
    });

    $.fancybox.defaults.hash = false;
    $('.fancybox').fancybox({
      loop   : true,
      helpers: {
        overlay: {
          locked: false
      }
    }
  });
},

 至此,轮播图已经创建完成了,轮播图的长宽比是按照我自己的喜好设置的，大家可以根据自己的喜好修改carousel.swig里的内容,从而达到自己想要的效果。

 以下是我写的，在手机端做了适配，避免了手机端显示的图片比例失调的问题：

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//默认的参数
.carousel{
        border-radius: 20px;
	width: 100%;
	height: 280px;  //图片高度
	position: relative;
        margin-top: 20px;
}

//手机端的参数
@media all and (max-width: 768px){
	.carousel{
                border-radius: 20px;
		width: 100% !important;
		height: 103px  //图片高度 !important;
		position: relative;
	}
}

 其实@media all and (max-width: 768px){}的意思就是当屏幕（也许是打字机或盲人阅读器）尺寸小于768px时，应用下面的css样式。也可以这样写@media screen and (min-width:768px) and (max-width:900px) {}，意思就是屏幕大于768px，小于900px的设备。大家可自行查阅有关media的内容，这里就不多赘述了😁

 有什么不懂的可以留言或者给我发邮件，我会尽可能地帮助大家解决问题的❤

 点击此处查看我的联系方式

------ 本文结束 感谢您的阅读------