转自

  1. 修改 [Blogroot]\themes\butterfly\layout\includes\loading\loading.pug,直接复制以下代码替换所有原代码。

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    if theme.preloader.enable
    #loading-box
    .loading-left-bg
    .loading-right-bg
    case theme.preloader.load_style
    when 'wizard'
    .wizard-scene
    .wizard-objects
    .wizard-square
    .wizard-circle
    .wizard-triangle
    .wizard
    .wizard-body
    .wizard-right-arm
    .wizard-right-hand
    .wizard-left-arm
    .wizard-left-hand
    .wizard-head
    .wizard-beard
    .wizard-face
    .wizard-adds
    .wizard-hat
    .wizard-hat-of-the-hat
    .wizard-four-point-star.--first
    .wizard-four-point-star.--second
    .wizard-four-point-star.--third
    when 'ironheart'
    .iron-container.iron-circle
    .iron-box1.iron-circle.iron-center
    .iron-box2.iron-circle.iron-center
    .iron-box3.iron-circle.iron-center
    .iron-box4.iron-circle.iron-center
    .iron-box5.iron-circle.iron-center
    .iron-box6.iron-circle
    .iron-coil(style='--i: 0')
    .iron-coil(style='--i: 1')
    .iron-coil(style='--i: 2')
    .iron-coil(style='--i: 3')
    .iron-coil(style='--i: 4')
    .iron-coil(style='--i: 5')
    .iron-coil(style='--i: 6')
    .iron-coil(style='--i: 7')
    when 'scarecrow'
    .scarecrow
    .scarecrow__hat
    .scarecrow__ribbon
    .scarecrow__head
    .scarecrow__eye
    .scarecrow__eye
    .scarecrow__mouth
    .scarecrow__pipe
    .scarecrow__body
    .scarecrow__glove.scarecrow__glove--l
    .scarecrow__sleeve.scarecrow__sleeve--l
    .scarecrow__bow
    .scarecrow__shirt
    .scarecrow__coat
    .scarecrow__waistcoat
    .scarecrow__sleeve.scarecrow__sleeve--r
    .scarecrow__glove.scarecrow__glove--r
    .scarecrow__coattails
    .scarecrow__pants
    .scarecrow__arms
    .scarecrow__leg
    when 'image'
    - var loadimage = theme.preloader.load_image ? theme.preloader.load_image : theme.error_img.post_page
    img.load-image(src=url_for(loadimage) alt='')
    default
    .spinner-box
    .configure-border-1
    .configure-core
    .configure-border-2
    .configure-core
    .loading-word= _p('loading')

    此处第一行的 if 用于判断 preloader 功能是否打开。下面的 casewhen 则是根据配置项的内容加载指定的页面元素。default 表示默认使用 butterfly 自带的旋转盒子动画。

  2. 修改 [Blogroot]\themes\butterfly\source\css\_layout\loading.styl,复制以下代码替换全部内容。

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    if hexo-config('preloader.enable')
    .loading-bg
    position fixed
    z-index 1000
    width 50%
    height 100%
    background var(--preloader-bg)
    #loading-box
    .loading-left-bg
    @extend .loading-bg
    left 0
    .loading-right-bg
    @extend .loading-bg
    right 0
    &.loaded
    z-index -1000
    .loading-left-bg
    transition all 1.0s
    transform translate(-100%, 0)
    .loading-right-bg
    transition all 1.0s
    transform translate(100%, 0)

    if hexo-config('preloader.load_style') == 'wizard'
    #loading-box
    position fixed
    z-index 1000
    display -webkit-box
    display flex
    -webkit-box-align center
    align-items center
    -webkit-box-pack center
    justify-content center
    -webkit-box-orient vertical
    -webkit-box-direction normal
    flex-direction column
    flex-wrap wrap
    width 100vw
    height 100vh
    overflow hidden

    &.loaded
    .wizard-scene
    display none

    .wizard-scene
    position fixed
    z-index 1001
    display -webkit-box
    display flex

    .wizard
    position relative
    width 190px
    height 240px

    .wizard-body
    position absolute
    bottom 0
    left 68px
    height 100px
    width 60px
    background #3f64ce
    &::after
    content ""
    position absolute
    bottom 0
    left 20px
    height 100px
    width 60px
    background #3f64ce
    -webkit-transform skewX(14deg)
    transform skewX(14deg)

    .wizard-right-arm
    position absolute
    bottom 74px
    left 110px
    height 44px
    width 90px
    background #3f64ce
    border-radius 22px
    -webkit-transform-origin 16px 22px
    transform-origin 16px 22px
    -webkit-transform rotate(70deg)
    transform rotate(70deg)
    -webkit-animation right_arm 10s ease-in-out infinite
    animation right_arm 10s ease-in-out infinite
    .right-hand
    position absolute
    right 8px
    bottom 8px
    width 30px
    height 30px
    border-radius 50%
    background #f1c5b4
    -webkit-transform-origin center center
    transform-origin center center
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)
    -webkit-animation right_hand 10s ease-in-out infinite
    animation right_hand 10s ease-in-out infinite
    .wizard-right-hand
    &::after
    content ""
    position absolute
    right 0px
    top -8px
    width 15px
    height 30px
    border-radius 10px
    background #f1c5b4
    -webkit-transform translateY(16px)
    transform translateY(16px)
    -webkit-animation right_finger 10s ease-in-out infinite
    animation right_finger 10s ease-in-out infinite

    .wizard-left-arm
    position absolute
    bottom 74px
    left 26px
    height 44px
    width 70px
    background #3f64ce
    border-bottom-left-radius 8px
    -webkit-transform-origin 60px 26px
    transform-origin 60px 26px
    -webkit-transform rotate(-70deg)
    transform rotate(-70deg)
    -webkit-animation left_arm 10s ease-in-out infinite
    animation left_arm 10s ease-in-out infinite
    .wizard-left-hand
    position absolute
    left -18px
    top 0
    width 18px
    height 30px
    border-top-left-radius 35px
    border-bottom-left-radius 35px
    background #f1c5b4
    &::after
    content ""
    position absolute
    right 0
    top 0
    width 30px
    height 15px
    border-radius 20px
    background #f1c5b4
    -webkit-transform-origin right bottom
    transform-origin right bottom
    -webkit-transform scaleX(0)
    transform scaleX(0)
    -webkit-animation left_finger 10s ease-in-out infinite
    animation left_finger 10s ease-in-out infinite

    .wizard-head
    position absolute
    top 0
    left 14px
    width 160px
    height 210px
    -webkit-transform-origin center center
    transform-origin center center
    -webkit-transform rotate(-3deg)
    transform rotate(-3deg)
    -webkit-animation head 10s ease-in-out infinite
    animation head 10s ease-in-out infinite
    .wizard-beard
    position absolute
    bottom 0
    left 38px
    height 106px
    width 80px
    border-bottom-right-radius 55%
    background #ffffff
    &::after
    content ""
    position absolute
    top 16px
    left -10px
    width 40px
    height 20px
    border-radius 20px
    background #ffffff
    .wizard-face
    position absolute
    bottom 76px
    left 38px
    height 30px
    width 60px
    background #f1c5b4
    &::before
    content ""
    position absolute
    top 0px
    left 40px
    width 20px
    height 40px
    border-bottom-right-radius 20px
    border-bottom-left-radius 20px
    background #f1c5b4
    &::after
    content ""
    position absolute
    top 16px
    left -10px
    width 50px
    height 20px
    border-radius 20px
    border-bottom-right-radius 0px
    background #ffffff
    .wizard-adds
    position absolute
    top 0px
    left -10px
    width 40px
    height 20px
    border-radius 20px
    background #f1c5b4
    &::after
    content ""
    position absolute
    top 5px
    left 80px
    width 15px
    height 20px
    border-bottom-right-radius 20px
    border-top-right-radius 20px
    background #f1c5b4
    .wizard-hat
    position absolute
    bottom 106px
    left 0
    width 160px
    height 20px
    border-radius 20px
    background #3f64ce
    &::before
    content ""
    position absolute
    top -70px
    left 50%
    -webkit-transform translatex(-50%)
    transform translatex(-50%)
    width 0
    height 0
    border-style solid
    border-width 0 34px 70px 50px
    border-color transparent transparent #3f64ce transparent
    &::after
    content ""
    position absolute
    top 0
    left 0
    width 160px
    height 20px
    background #3f64ce
    border-radius 20px
    .wizard-hat-of-the-hat
    position absolute
    bottom 78px
    left 79px
    width 0
    height 0
    border-style solid
    border-width 0 25px 25px 19px
    border-color transparent transparent #3f64ce transparent
    &::after
    content ""
    position absolute
    top 6px
    left -4px
    width 35px
    height 10px
    border-radius 10px
    border-bottom-left-radius 0px
    background #3f64ce
    -webkit-transform rotate(40deg)
    transform rotate(40deg)
    .wizard-four-point-star
    position absolute
    width 12px
    height 12px
    &::after
    -webkit-transform rotate(156.66deg) skew(45deg)
    transform rotate(156.66deg) skew(45deg)
    &.--first
    bottom 28px
    left 46px
    &.--second
    bottom 40px
    left 80px
    &.--third
    bottom 15px
    left 108px

    .wizard-head .wizard-hat .wizard-four-point-star::after, .wizard-head .wizard-hat .wizard-four-point-star::before
    content ""
    position absolute
    background #ffffff
    display block
    left 0
    width 141.4213%
    top 0
    bottom 0
    border-radius 10%
    -webkit-transform rotate(66.66deg) skewX(45deg)
    transform rotate(66.66deg) skewX(45deg)

    .wizard-objects
    position relative
    width 200px
    height 240px

    .wizard-square
    position absolute
    bottom -60px
    left -5px
    width 120px
    height 120px
    border-radius 50%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)
    -webkit-animation path_square 10s ease-in-out infinite
    animation path_square 10s ease-in-out infinite
    &::after
    content ""
    position absolute
    top 10px
    left 0
    width 50px
    height 50px
    background #9ab3f5

    .wizard-circle
    position absolute
    bottom 10px
    left 0
    width 100px
    height 100px
    border-radius 50%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)
    -webkit-animation path_circle 10s ease-in-out infinite
    animation path_circle 10s ease-in-out infinite
    &::after
    content ""
    position absolute
    bottom -10px
    left 25px
    width 50px
    height 50px
    border-radius 50%
    background #c56183

    .wizard-triangle
    position absolute
    bottom -62px
    left -10px
    width 110px
    height 110px
    border-radius 50%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)
    -webkit-animation path_triangle 10s ease-in-out infinite
    animation path_triangle 10s ease-in-out infinite
    &::after
    content ""
    position absolute
    top 0
    right -10px
    width 0
    height 0
    border-style solid
    border-width 0 28px 48px 28px
    border-color transparent transparent #89beb3 transparent


    /** 10s animation - 10% = 1s */
    @-webkit-keyframes right_arm
    0%
    -webkit-transform rotate(70deg)
    transform rotate(70deg)
    10%
    -webkit-transform rotate(8deg)
    transform rotate(8deg)
    15%
    -webkit-transform rotate(20deg)
    transform rotate(20deg)
    20%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    25%
    -webkit-transform rotate(26deg)
    transform rotate(26deg)
    30%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    35%
    -webkit-transform rotate(28deg)
    transform rotate(28deg)
    40%
    -webkit-transform rotate(9deg)
    transform rotate(9deg)
    45%
    -webkit-transform rotate(28deg)
    transform rotate(28deg)
    50%
    -webkit-transform rotate(8deg)
    transform rotate(8deg)
    58%
    -webkit-transform rotate(74deg)
    transform rotate(74deg)
    62%
    -webkit-transform rotate(70deg)
    transform rotate(70deg)

    @keyframes right_arm
    0%
    -webkit-transform rotate(70deg)
    transform rotate(70deg)
    10%
    -webkit-transform rotate(8deg)
    transform rotate(8deg)
    15%
    -webkit-transform rotate(20deg)
    transform rotate(20deg)
    20%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    25%
    -webkit-transform rotate(26deg)
    transform rotate(26deg)
    30%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    35%
    -webkit-transform rotate(28deg)
    transform rotate(28deg)
    40%
    -webkit-transform rotate(9deg)
    transform rotate(9deg)
    45%
    -webkit-transform rotate(28deg)
    transform rotate(28deg)
    50%
    -webkit-transform rotate(8deg)
    transform rotate(8deg)
    58%
    -webkit-transform rotate(74deg)
    transform rotate(74deg)
    62%
    -webkit-transform rotate(70deg)
    transform rotate(70deg)

    @-webkit-keyframes left_arm
    0%
    -webkit-transform rotate(-70deg)
    transform rotate(-70deg)
    10%
    -webkit-transform rotate(6deg)
    transform rotate(6deg)
    15%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    20%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    25%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    30%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    35%
    -webkit-transform rotate(-17deg)
    transform rotate(-17deg)
    40%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    45%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    50%
    -webkit-transform rotate(6deg)
    transform rotate(6deg)
    58%
    -webkit-transform rotate(-74deg)
    transform rotate(-74deg)
    62%
    -webkit-transform rotate(-70deg)
    transform rotate(-70deg)

    @keyframes left_arm
    0%
    -webkit-transform rotate(-70deg)
    transform rotate(-70deg)
    10%
    -webkit-transform rotate(6deg)
    transform rotate(6deg)
    15%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    20%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    25%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    30%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    35%
    -webkit-transform rotate(-17deg)
    transform rotate(-17deg)
    40%
    -webkit-transform rotate(5deg)
    transform rotate(5deg)
    45%
    -webkit-transform rotate(-18deg)
    transform rotate(-18deg)
    50%
    -webkit-transform rotate(6deg)
    transform rotate(6deg)
    58%
    -webkit-transform rotate(-74deg)
    transform rotate(-74deg)
    62%
    -webkit-transform rotate(-70deg)
    transform rotate(-70deg)

    @-webkit-keyframes right_hand
    0%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)
    10%
    -webkit-transform rotate(-20deg)
    transform rotate(-20deg)
    15%
    -webkit-transform rotate(-5deg)
    transform rotate(-5deg)
    20%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    25%
    -webkit-transform rotate(0deg)
    transform rotate(0deg)
    30%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    35%
    -webkit-transform rotate(0deg)
    transform rotate(0deg)
    40%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)
    45%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    50%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    60%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)


    @keyframes right_hand
    0%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)
    10%
    -webkit-transform rotate(-20deg)
    transform rotate(-20deg)
    15%
    -webkit-transform rotate(-5deg)
    transform rotate(-5deg)
    20%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    25%
    -webkit-transform rotate(0deg)
    transform rotate(0deg)
    30%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    35%
    -webkit-transform rotate(0deg)
    transform rotate(0deg)
    40%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)
    45%
    -webkit-transform rotate(-60deg)
    transform rotate(-60deg)
    50%
    -webkit-transform rotate(10deg)
    transform rotate(10deg)
    60%
    -webkit-transform rotate(-40deg)
    transform rotate(-40deg)

    @-webkit-keyframes right_finger
    0%
    -webkit-transform translateY(16px)
    transform translateY(16px)
    10%
    -webkit-transform none
    transform none
    50%
    -webkit-transform none
    transform none
    60%
    -webkit-transform translateY(16px)
    transform translateY(16px)

    @keyframes right_finger
    0%
    -webkit-transform translateY(16px)
    transform translateY(16px)
    10%
    -webkit-transform none
    transform none
    50%
    -webkit-transform none
    transform none
    60%
    -webkit-transform translateY(16px)
    transform translateY(16px)

    @-webkit-keyframes left_finger
    0%
    -webkit-transform scaleX(0)
    transform scaleX(0)
    10%
    -webkit-transform scaleX(1) rotate(6deg)
    transform scaleX(1) rotate(6deg)
    15%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    20%
    -webkit-transform scaleX(1) rotate(8deg)
    transform scaleX(1) rotate(8deg)
    25%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    30%
    -webkit-transform scaleX(1) rotate(7deg)
    transform scaleX(1) rotate(7deg)
    35%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    40%
    -webkit-transform scaleX(1) rotate(5deg)
    transform scaleX(1) rotate(5deg)
    45%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    50%
    -webkit-transform scaleX(1) rotate(6deg)
    transform scaleX(1) rotate(6deg)
    58%
    -webkit-transform scaleX(0)
    transform scaleX(0)

    @keyframes left_finger
    0%
    -webkit-transform scaleX(0)
    transform scaleX(0)
    10%
    -webkit-transform scaleX(1) rotate(6deg)
    transform scaleX(1) rotate(6deg)
    15%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    20%
    -webkit-transform scaleX(1) rotate(8deg)
    transform scaleX(1) rotate(8deg)
    25%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    30%
    -webkit-transform scaleX(1) rotate(7deg)
    transform scaleX(1) rotate(7deg)
    35%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    40%
    -webkit-transform scaleX(1) rotate(5deg)
    transform scaleX(1) rotate(5deg)
    45%
    -webkit-transform scaleX(1) rotate(0deg)
    transform scaleX(1) rotate(0deg)
    50%
    -webkit-transform scaleX(1) rotate(6deg)
    transform scaleX(1) rotate(6deg)
    58%
    -webkit-transform scaleX(0)
    transform scaleX(0)

    @-webkit-keyframes head
    0%
    -webkit-transform rotate(-3deg)
    transform rotate(-3deg)
    10%
    -webkit-transform translatex(10px) rotate(7deg)
    transform translatex(10px) rotate(7deg)
    50%
    -webkit-transform translatex(0px) rotate(0deg)
    transform translatex(0px) rotate(0deg)
    56%
    -webkit-transform rotate(-3deg)
    transform rotate(-3deg)

    @keyframes head
    0%
    -webkit-transform rotate(-3deg)
    transform rotate(-3deg)
    10%
    -webkit-transform translatex(10px) rotate(7deg)
    transform translatex(10px) rotate(7deg)
    50%
    -webkit-transform translatex(0px) rotate(0deg)
    transform translatex(0px) rotate(0deg)
    56%
    -webkit-transform rotate(-3deg)
    transform rotate(-3deg)
    /** 10s animation - 10% = 1s */
    @-webkit-keyframes path_circle
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-100px) rotate(-5deg)
    transform translateY(-100px) rotate(-5deg)
    55%
    -webkit-transform translateY(-100px) rotate(-360deg)
    transform translateY(-100px) rotate(-360deg)
    58%
    -webkit-transform translateY(-100px) rotate(-360deg)
    transform translateY(-100px) rotate(-360deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)

    @keyframes path_circle
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-100px) rotate(-5deg)
    transform translateY(-100px) rotate(-5deg)
    55%
    -webkit-transform translateY(-100px) rotate(-360deg)
    transform translateY(-100px) rotate(-360deg)
    58%
    -webkit-transform translateY(-100px) rotate(-360deg)
    transform translateY(-100px) rotate(-360deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)

    @-webkit-keyframes path_square
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(10deg)
    transform translateY(-155px) translatex(-15px) rotate(10deg)
    55%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(-350deg)
    transform translateY(-155px) translatex(-15px) rotate(-350deg)
    57%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(-350deg)
    transform translateY(-155px) translatex(-15px) rotate(-350deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)

    @keyframes path_square
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(10deg)
    transform translateY(-155px) translatex(-15px) rotate(10deg)
    55%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(-350deg)
    transform translateY(-155px) translatex(-15px) rotate(-350deg)
    57%
    -webkit-transform translateY(-155px) translatex(-15px) rotate(-350deg)
    transform translateY(-155px) translatex(-15px) rotate(-350deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)

    @-webkit-keyframes path_triangle
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-10deg)
    transform translateY(-172px) translatex(10px) rotate(-10deg)
    55%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-365deg)
    transform translateY(-172px) translatex(10px) rotate(-365deg)
    58%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-365deg)
    transform translateY(-172px) translatex(10px) rotate(-365deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)

    @keyframes path_triangle
    0%
    -webkit-transform translateY(0)
    transform translateY(0)
    10%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-10deg)
    transform translateY(-172px) translatex(10px) rotate(-10deg)
    55%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-365deg)
    transform translateY(-172px) translatex(10px) rotate(-365deg)
    58%
    -webkit-transform translateY(-172px) translatex(10px) rotate(-365deg)
    transform translateY(-172px) translatex(10px) rotate(-365deg)
    63%
    -webkit-transform rotate(-360deg)
    transform rotate(-360deg)
    else if hexo-config('preloader.load_style') == 'ironheart'
    #loading-box
    position fixed
    z-index 1000
    display -webkit-box
    display flex
    -webkit-box-align center
    align-items center
    -webkit-box-pack center
    justify-content center
    -webkit-box-orient vertical
    -webkit-box-direction normal
    flex-direction column
    flex-wrap wrap
    width 100vw
    height 100vh
    overflow hidden

    &.loaded
    .iron-container
    display none

    .iron-circle
    border-radius 50%

    .iron-center
    position absolute
    top 50%
    left 50%
    transform translate(-50%, -50%)

    .iron-container
    z-index 1001
    position relative
    width 300px
    height 300px
    border 1px solid rgb(18, 20, 20)
    background-color #384c50
    box-shadow 0 0 32px 8px rgb(18, 20, 20), 0 0 4px 1px rgb(18, 20, 20) inset
    .iron-box1
    width 238px
    height 238px
    background-color rgb(22, 26, 27)
    box-shadow 0 0 4px 1px #52fefe
    .iron-box2
    width 220px
    height 220px
    background-color #fff
    box-shadow 0 0 5px 1px #52fefe, 0 0 5px 4px #52fefe inset
    .iron-box3
    width 180px
    height 180px
    background-color #073c4b
    box-shadow 0 0 5px 4px #52fefe, 0 0 6px 2px #52fefe inset
    .iron-box4
    width 120px
    height 120px
    border 1px solid #52fefe
    background-color #fff
    box-shadow 0 0 2px 1px #52fefe, 0 0 10px 5px #52fefe inset
    .iron-box5
    width 70px
    height 70px
    border 5px solid #1b4e5f
    box-shadow 0 0 7px 5px #52fefe, 0 0 10px 10px #52fefe inset
    .iron-box6
    position relative
    width 100%
    height 100%
    animation ironrotate 3s linear infinite
    .iron-coil
    position absolute
    width 30px
    height 20px
    top calc(50% - 110px)
    left calc(50% - 15px)
    background-color #073c4b
    box-shadow 0 0 5px #52fefe inset
    transform rotate(calc(var(--i) * 45deg))
    transform-origin center 110px
    @keyframes ironrotate
    0%
    transform rotate(0)
    100%
    transform rotate(360deg)

    else if hexo-config('preloader.load_style') == 'scarecrow'
    #loading-box
    position fixed
    z-index 1000
    display -webkit-box
    display flex
    -webkit-box-align center
    align-items center
    -webkit-box-pack center
    justify-content center
    -webkit-box-orient vertical
    -webkit-box-direction normal
    flex-direction column
    flex-wrap wrap
    width 100vw
    height 100vh
    overflow hidden
    &.loaded
    .scarecrow
    display none
    .scarecrow
    z-index 1001
    position relative
    animation hop 0.2s ease-in alternate infinite

    .scarecrow__hat
    position relative
    border-top-left-radius 5px
    border-top-right-radius 5px
    border-top 45px solid #515559
    border-left 1px solid transparent
    border-right 1px solid transparent
    width 55px
    margin 0 auto -3px
    z-index 1
    &:before
    content ""
    position absolute
    top -87px
    right -23px
    background-color #515559
    width 9px
    height 55px
    border-radius 100%
    transform rotate(50deg)
    &:after
    content ""
    position absolute
    top 12px
    left -15px
    background-color #515559
    width 85px
    height 10px
    border-radius 40% 40% 70% 70%

    .scarecrow__ribbon
    width 55px
    height 12px
    background-color #d996b5
    margin 0 auto

    .scarecrow__head
    position relative
    background-color #f2f2f2
    width 70px
    height 55px
    margin 0 auto
    border-radius 50%
    display flex
    justify-content space-around
    flex-flow row wrap

    .scarecrow__eye
    width 6px
    height 6px
    background-color #000
    border-radius 50%
    margin 20px 5px 0

    .scarecrow__mouth
    width 45px
    height 15px
    background-color #fff
    border-radius 50%

    .scarecrow__pipe
    position absolute
    top 40px
    left 60px
    width 40px
    height 2px
    background-color #8c8070
    &:before
    content ""
    position absolute
    width 9px
    height 17px
    background-color #8c8070
    border-radius 3px
    left 40px
    top -7px

    .scarecrow__body
    position relative
    width 250px
    z-index 1

    .scarecrow__coat
    position absolute
    top 15px
    left 0
    right 0
    margin-left auto
    margin-right auto
    border-top 100px solid #515559
    border-left 5px solid transparent
    border-right 5px solid transparent
    width 75px

    .scarecrow__bow
    position absolute
    top 20px
    left 0
    right 0
    margin-left auto
    margin-right auto
    background-color #3a485d
    width 10px
    height 10px
    z-index 3
    border-radius 2px
    &:before
    content ""
    position absolute
    top -10px
    left -25px
    width 0
    height 10px
    border-top 10px solid transparent
    border-left 25px solid #5a6b8c
    border-bottom 10px solid transparent
    border-radius 8px
    &:after
    content ""
    position absolute
    top -10px
    right -25px
    width 0
    height 10px
    border-top 10px solid transparent
    border-right 25px solid #5a6b8c
    border-bottom 10px solid transparent
    border-radius 8px

    .scarecrow__shirt
    position absolute
    top 8px
    left 0
    right 0
    margin-left auto
    margin-right auto
    width 30px
    height 35px
    z-index 2
    &:before
    content ""
    position absolute
    top 0
    left -5px
    height 100%
    width 70%
    background-color #dbb2c2
    transform skew(1deg, 35deg)
    border-bottom-left-radius 90px
    border-top-left-radius 15px
    border-bottom-right-radius 15px
    border-top-right-radius 10px
    &:after
    content ""
    position absolute
    top 0
    right -5px
    height 100%
    width 70%
    background-color #dbb2c2
    transform skew(-1deg, -35deg)
    border-top-right-radius 15px
    border-bottom-right-radius 90px
    border-bottom-left-radius 15px
    border-top-left-radius 10px

    .scarecrow__waistcoat
    position absolute
    top 15px
    left -1px
    right 0
    margin-left auto
    margin-right auto
    width 35px
    height 50px
    &:before
    content ""
    position absolute
    top 0
    left -4px
    height 100%
    width 65%
    background-color #83a6bc
    transform skew(0deg, 40deg)
    border-bottom-left-radius 90px
    border-top-left-radius 90px
    border-bottom-right-radius 15px
    &:after
    content ""
    position absolute
    top 0
    right -5px
    height 100%
    width 65%
    background-color #83a6bc
    transform skew(0deg, -40deg)
    border-top-right-radius 90px
    border-bottom-right-radius 90px
    border-bottom-left-radius 15px

    .scarecrow__coattails
    position absolute
    top 105px
    left 0
    right 0
    margin-left auto
    margin-right auto
    width 75px
    height 120px
    z-index 1
    &:before
    content ""
    position absolute
    top 0
    left 8px
    height 100%
    width 60%
    background-color #515559
    transform-origin top
    transform skew(-25deg, 30deg) rotate(0deg)
    border-bottom-left-radius 50px
    border-bottom-right-radius 5px
    animation coattails-left 0.2s ease-in alternate infinite
    &:after
    content ""
    position absolute
    top 0
    right 8px
    height 100%
    width 60%
    background-color #515559
    transform-origin top
    transform skew(25deg, -30deg) rotate(0deg)
    border-bottom-right-radius 50px
    border-bottom-left-radius 5px
    animation coattails-right 0.2s ease-in alternate infinite

    .scarecrow__pants
    position absolute
    top 115px
    left 0
    right 0
    margin-left auto
    margin-right auto
    width 50px
    height 150px
    &:before
    content ""
    position absolute
    top 0
    left -8px
    height 100%
    width 60%
    background-color #393c3e
    transform rotate(0deg)
    transform-origin top
    animation pants 0.5s linear alternate infinite
    &:after
    content ""
    position absolute
    top 0
    right -8px
    height 100%
    width 60%
    background-color #393c3e
    transform rotate(0deg)
    transform-origin top
    animation pants 0.3s linear alternate infinite

    .scarecrow__sleeve
    position absolute
    top 15px
    background-color #515559
    width 80px
    height 25px

    .scarecrow__sleeve--l
    left 10px
    &:before
    content ""
    position absolute
    top -3px
    left -22px
    width 0
    height 25px
    border-top 3px solid transparent
    border-left 25px solid #515559
    border-bottom 3px solid transparent
    border-radius 3px

    .scarecrow__sleeve--r
    right 10px
    &:before
    content ""
    position absolute
    top -3px
    right -22px
    width 0
    height 25px
    border-top 3px solid transparent
    border-right 25px solid #515559
    border-bottom 3px solid transparent
    border-radius 3px

    .scarecrow__glove
    position absolute
    top 12px
    width 0px
    height 12px
    &:before
    content ""
    position absolute
    top -7px
    border-radius 100%
    background-color #f2f2f2
    width 35px
    height 15px

    .scarecrow__glove--l
    border-top 3px solid transparent
    border-right 20px solid #f2f2f2
    border-bottom 3px solid transparent
    left -50px
    &:before
    transform-origin right
    left -30px
    transform rotate(0deg)
    animation glove-l 0.2s linear alternate infinite

    .scarecrow__glove--r
    border-top 3px solid transparent
    border-left 20px solid #f2f2f2
    border-bottom 3px solid transparent
    right -50px
    &:before
    transform-origin left
    right -30px
    transform rotate(0deg)
    animation glove-r 0.2s linear alternate infinite

    .scarecrow__arms
    position absolute
    left 50%
    transform translate(-50%, -50%)
    background-color #8c8070
    width 350px
    height 8px
    border-radius 5px
    margin 20px auto

    .scarecrow__leg
    position relative
    background-color #8c8070
    width 8px
    height 380px
    border-bottom-left-radius 5px
    border-bottom-right-radius 5px
    margin 0 auto

    @keyframes hop
    0%
    transform translateY(-10px)
    100%
    transform translateY(10px)

    @keyframes coattails-left
    0%
    transform skew(-25deg, 30deg) rotate(-3deg)
    100%
    transform skew(-25deg, 30deg) rotate(3deg)

    @keyframes coattails-right
    0%
    transform skew(25deg, -30deg) rotate(3deg)
    100%
    transform skew(25deg, -30deg) rotate(-3deg)

    @keyframes pants
    0%
    transform rotate(3deg)
    100%
    transform rotate(-3deg)

    @keyframes glove-l
    0%
    transform rotate(-50deg)
    100%
    transform rotate(-30deg)

    @keyframes glove-r
    0%
    transform rotate(50deg)
    100%
    transform rotate(30deg)
    else if hexo-config('preloader.load_style') == 'image'
    #loading-box
    position fixed
    z-index 1000
    display -webkit-box
    display flex
    -webkit-box-align center
    align-items center
    -webkit-box-pack center
    justify-content center
    -webkit-box-orient vertical
    -webkit-box-direction normal
    flex-direction column
    flex-wrap wrap
    width 100vw
    height 100vh
    overflow hidden

    .load-image
    position fixed
    z-index 1001
    display flex

    &.loaded
    .load-image
    display none
    else
    #loading-box
    .spinner-box
    position fixed
    z-index 1001
    display flex
    justify-content center
    align-items center
    width 100%
    height 100vh

    .configure-border-1
    position absolute
    padding 3px
    width 115px
    height 115px
    background #ffab91
    animation configure-clockwise 3s ease-in-out 0s infinite alternate

    .configure-border-2
    left -115px
    padding 3px
    width 115px
    height 115px
    background rgb(63, 249, 220)
    transform rotate(45deg)
    animation configure-xclockwise 3s ease-in-out 0s infinite alternate

    .loading-word
    position absolute
    color var(--preloader-color)
    font-size .8rem

    .configure-core
    width 100%
    height 100%
    background-color var(--preloader-bg)

    &.loaded
    .spinner-box
    display none

    @keyframes configure-clockwise
    0%
    transform rotate(0)

    25%
    transform rotate(90deg)

    50%
    transform rotate(180deg)

    75%
    transform rotate(270deg)

    100%
    transform rotate(360deg)

    @keyframes configure-xclockwise
    0%
    transform rotate(45deg)

    25%
    transform rotate(-45deg)

    50%
    transform rotate(-135deg)

    75%
    transform rotate(-225deg)

    100%
    transform rotate(-315deg)

    几个 if 的判断机制与 loading.pug 类似,都是根据配置项来决定加载的样式。且默认使用旋转盒子动画。

  3. 修改 [Blogroot]\themes\butterfly\layout\includes\layout.pug,以适配接下来需要添加的配置项。

    butterfly_v3.0.0-v3.5.1

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        body
    - if theme.preloader
    + if theme.preloader.enable
    !=partial('includes/loading/loading', {}, {cache:theme.fragment_cache})

    butterfly_v3.6.0+

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        body
    - if theme.preloader
    + if theme.preloader.enable
    !=partial('includes/loading/loading', {}, {cache: true})
  4. 修改 [Blogroot]\themes\butterfly\source\css\var.styl,添加自定义修改背景色的配置项。(大概 98 行的位置)

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          // preloader
    - $preloader-bg = #37474f
    + $preloader-bg = hexo-config('preloader.enable') && hexo-config('preloader.load_color') ? convert(hexo-config('preloader.load_color')) : #37474f
    $preloader-word-color = #fff
  5. 修改 [Blogroot]\_config.butterfly.ymlpreloader 配置项。

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        # Loading Animation (加載動畫)
    - preloader: true
    + preloader:
    + enable: true # true|false
    + load_color: '#000000' # '#37474f'
    + load_style: wizard # # spinner-box|wizard|ironheart|scarecrow|image
    + load_image: # url

    配置项参数说明:

    1. enable:控制加载动画的开关,取值有 truefalsetrue 开启,false 关闭。
    2. load_color:该配置项为自定义加载动画背景颜色。默认值为#37474f, 使用时注意用’’包起来,不然会被识别成注释符。
      这个配置项最大的作用是配合 load_image 使用的图片的背景色,可以用取色器提取自定义图片的主要色调,以达到图片和背景融为一体的效果。
    3. load_style:控制加载动画的样式,目前提供三种类型。
      • spinner-box 是主题原版的盒子加载动画
      • wizard 是巫师施法加载动画
      • ironheart 是钢铁侠核心加载动画
      • scarecrow 是稻草人跳动加载动画
      • image 为自定义添加静态图片或 gif 作为加载动画。
    4. load_image:该配置项的生效前提是 load_style 设置为 image, 内容填写图床链接或者本地相对地址。

    熟悉魔改思路以后可以自定义添加更多更多样式,按照本教程的思路,在编译时只会加载选择的加载动画的对应样式,所以不用担心资源占用过多的问题。

  6. 此项为非必要修改项,主要是为了避免使用 image 主题时,切换夜间模式后,背景色被强制覆盖为黑色~~,说白了就是治疗强迫症~~。修改 [Blogroot]\themes\butterfly\source\css\_mode\darkmode.styl 第 10 行的 --preloader-bg: darken(#121212, 2)

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        --search-input-color: alpha(#FFFFFF, .7)
    --search-result-title: alpha(#FFFFFF, .9)
    - --preloader-bg: darken(#121212, 2)
    + --preloader-bg: darken(#ca3b3e, -2)
    --preloader-color: alpha(#FFFFFF, .7)
    --tab-border-color: #2c2c2c

    其中#ca3b3e 是设置为 image 主题时,切换为夜间模式后,自定义图片的背景色值。(切换夜间模式时,整个页面会降低色调,所以连带着自定义图片的色值也变暗,需要重新取值。)

  7. 补充

    很多同学表示添加了加载动画以后加载半天,只能看动画却进不了站我的加载动画还被 Heo 说成是无限施法 2333。这点主要是因为加载动画的关闭与否是与网站加载状态的 load 的返回值决定的,而网站加载完成与否这个概念是很暧昧的,如果加装了 pwa,清空缓存后再次加载的内容可能比想象的要多。以下提供两种方案,一个超时自动结束,一个手动点击结束。两者兼容,你可以同时使用达到多重保险。

    可以给加载动画设置一个 settimeout () 的函数来达到伪・加载完毕的效果,即超时了自动关闭加载动画,即使页面还在加载。
    得益于 loading-js 使用的是原生 js,所以可以给 script 添加 async 属性实现异步加载,以免阻塞后续 HTML 渲染。
    仅仅需要给控制加载动画开关的 loading-js.pug 添加两行代码即可。

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    -   script.
    + script(async).
    var 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()})
    + setTimeout(function(){preloader.endLoading();}, 5000);

    其中 5000 的单位是 ms,代表你设置的最大容忍时间。可以自行修改。
    这样一来,如果网站在五秒内加载完成,则优先执行 window.addEventListener(‘load’,()=> {preloader.endLoading()}), 如果超过 5 秒,则执行 setTimeout(function(){preloader.endLoading();}, 5000);, 两者互不干扰。可喜可贺,可喜可贺。

    给整个 loading-box 添加一个点击动作,点击动画就能结束。
    修改 [Blogroot]\themes\butterfly\layout\includes\layout.pug

    • butterfly_v3.0.0-v3.5.1:

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          body
      if theme.preloader.enable
      - !=partial('includes/loading/loading', {}, {cache:theme.fragment_cache})
      + a(href='javascript:void(0);' onclick='preloader.endLoading();' title='点击跳过动画')
      + !=partial('includes/loading/loading', {}, {cache:theme.fragment_cache})
    • butterfly_v3.6.0+:

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          body
      if theme.preloader.enable
      - !=partial('includes/loading/loading', {}, {cache: true})
      + a(href='javascript:void(0);' onclick='preloader.endLoading();' title='点击跳过动画')
      + !=partial('includes/loading/loading', {}, {cache: true})