原创HEO

昨天看到洪哥的加载动画很奇特，就只有一个头像，之前一直以为洪哥没有加载动画原来是加载太快看不到

效果预览

本站 满屏与 pace 同时启用

butterfly 4.5 以上方案

修改 themes/butterfly/layout/includes/loading/fullpage-loading.pug

#loading-box(onclick='document.getElementById("loading-box").classList.add("loaded")')
  .loading-bg
    div.loading-img
    .loading-image-dot

script.
  const preloader = {
    endLoading: () => {
      document.body.style.overflow = 'auto';
      document.getElementById('loading-box').classList.add("loaded")
    },
    initLoading: () => {
      document.body.style.overflow = '';
      document.getElementById('loading-box').classList.remove("loaded")

    }
  }
  window.addEventListener('load',()=> { preloader.endLoading() })

  if (!{theme.pjax && theme.pjax.enable}) {
    document.addEventListener('pjax:send', () => { preloader.initLoading() })
    document.addEventListener('pjax:complete', () => { preloader.endLoading() })
  }

修改themes/butterfly/layout/includes/loading/index.pug

if theme.preloader.source === 1
  include ./fullpage-loading.pug
else if theme.preloader.source === 2
  include ./pace.pug
else
  include ./fullpage-loading.pug
  include ./pace.pug

新建source/css/progress_bar.css, 也可以不做这一步下面配置文件pace_css_url这一项就要留空, 这一步是修改 pace 加载的胶囊 💊 样式用的

.pace {
  -webkit-pointer-events: none;
  pointer-events: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  z-index: 2000;
  position: fixed;
  margin: auto;
  top: 10px;
  left: 0;
  right: 0;
  height: 8px;
  border-radius: 8px;
  width: 4rem;
  background: #eaecf2;
  border: 1px #e3e8f7;
  overflow: hidden;
}

.pace-inactive .pace-progress {
  opacity: 0;
  transition: 0.3s ease-in;
}

.pace .pace-progress {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  -o-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -ms-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
  max-width: 200px;
  position: absolute;
  z-index: 2000;
  display: block;
  top: 0;
  right: 100%;
  height: 100%;
  width: 100%;
  background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
  animation: gradient 1.5s ease infinite;
  background-size: 200%;
}

.pace.pace-inactive {
  opacity: 0;
  transition: 0.3s;
  top: -8px;
}
@keyframes gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

修改themes/butterfly/source/css/_layout/loading.styl, 注意其中颜色代码--anzhiyu-card-bg等需自行替换为自己的色值。

if hexo-config('preloader')
  .loading-bg
    display: flex;
    width: 100%;
    height: 100%;
    position: fixed;
    background: var(--anzhiyu-card-bg);
    z-index: 1001;
    opacity: 1;
    transition: .3s;

  #loading-box
    .loading-img
      width: 100px;
      height: 100px;
      border-radius: 50%;
      margin: auto;
      border: 4px solid #f0f0f2;
      animation-duration: .3s;
      animation-name: loadingAction;
      animation-iteration-count: infinite;
      animation-direction: alternate;
    .loading-image-dot
      width: 30px;
      height: 30px;
      background: #6bdf8f;
      position: absolute;
      border-radius: 50%;
      border: 6px solid #fff;
      top: 50%;
      left: 50%;
      transform: translate(18px, 24px);
    &.loaded
      .loading-bg
        opacity: 0;
        z-index: -1000;

  @keyframes loadingAction
    0% {
        opacity: 1;
    }

    100% {
        opacity: .4;
    }

在合适的地方加上自定义 css, 其中 background 的 url 即为 loading 的图片地址。

不会的同学参考Hexo 博客添加自定义 css 和 js 文件

.loading-img {
  background: url(https://npm.elemecdn.com/anzhiyu-blog@2.1.1/img/avatar.webp) no-repeat center center;
  background-size: cover;
}

最后修改_config.butterfly.yml中preloader选项, 改完以后source: 1为满屏加载无pace胶囊,source: 2为pace胶囊无满屏动画, source: 3是两者都启用。

# Loading Animation (加载动画)
preloader:
  enable: true
  # source
  # 1. fullpage-loading
  # 2. pace (progress bar)
  # else all
  source: 3
  # pace theme (see https://codebyzach.github.io/pace/)
  pace_css_url: /css/progress_bar.css
  avatar: # 自定义头像

butterfly 4.4.2 以下版本方案

if hexo-config('preloader')
  .loading-bg
    display: flex;
    width: 100%;
    height: 100%;
    position: fixed;
    background: var(--anzhiyu-card-bg);
    z-index: 1001;
    opacity: 1;
    transition: .3s;

  #loading-box
    .loading-img
      width: 100px;
      height: 100px;
      border-radius: 50%;
      margin: auto;
      border: 4px solid #f0f0f2;
      animation-duration: .3s;
      animation-name: loadingAction;
      animation-iteration-count: infinite;
      animation-direction: alternate;
    .loading-image-dot
      width: 30px;
      height: 30px;
      background: #6bdf8f;
      position: absolute;
      border-radius: 50%;
      border: 6px solid #fff;
      top: 50%;
      left: 50%;
      transform: translate(18px, 24px);
    &.loaded
      .loading-bg
        opacity: 0;
        z-index: -1000;

  @keyframes loadingAction
    0% {
        opacity: 1;
    }

    100% {
        opacity: .4;
    }

#loading-box(onclick='document.getElementById("loading-box").classList.add("loaded")')
  .loading-bg
    div.loading-img
    .loading-image-dot

.loading-img {
  background: url(https://npm.elemecdn.com/anzhiyu-blog@2.1.1/img/avatar.webp) no-repeat center center;
  background-size: cover;
}