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Hexo next主题添加鼠标特效

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本文字数： 9.3k 阅读时长 ≈ 8 分钟

话不多说，先上效果图

樱花特效（跟随鼠标移动）
01

爆炸特效（点击鼠标）
02

在themes\next\source\js新建文件夹cursor

在文件夹cursor新建下面两个js文件

cherry.js

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(function cherry() {
  var possibleColors = ["#D61C59", "#E7D84B", "#1B8798"]
  var width = window.innerWidth;
  var height = window.innerHeight;
  var cursor = {x: width/2, y: width/2};
  var particles = [];
  
  function init() {
    bindEvents();
    loop();
  }  
  // Bind events that are needed
  function bindEvents() {
    document.addEventListener('mousemove', onMouseMove);
    document.addEventListener('touchmove', onTouchMove);
    document.addEventListener('touchstart', onTouchMove);
    
    window.addEventListener('resize', onWindowResize);
  }  
  function onWindowResize(e) {
    width = window.innerWidth;
    height = window.innerHeight;
  } 
  function onTouchMove(e) {
    if( e.touches.length > 0 ) {
      for( var i = 0; i < e.touches.length; i++ ) {
        addParticle( e.touches[i].clientX, e.touches[i].clientY, possibleColors[Math.floor(Math.random()*possibleColors.length)]);
      }
    }
  }
  function onMouseMove(e) {    
    cursor.x = e.clientX;
    cursor.y = e.clientY;
    
    addParticle( cursor.x, cursor.y, possibleColors[Math.floor(Math.random()*possibleColors.length)]);
  }
  function addParticle(x, y, color) {
    var particle = new Particle();
    particle.init(x, y, color);
    particles.push(particle);
  }
  function updateParticles() {
    for( var i = 0; i < particles.length; i++ ) {
      particles[i].update();
    }
    for( var i = particles.length -1; i >= 0; i-- ) {
      if( particles[i].lifeSpan < 0 ) {
        particles[i].die();
        particles.splice(i, 1);
      }
    }
  }
  function loop() {
    requestAnimationFrame(loop);
    updateParticles();
  }
  function Particle() {
    this.character = "*";
    this.lifeSpan = 120; //ms
    this.initialStyles ={
      "position": "fixed",
      "top": "0", //必须加
      "display": "block",
      "pointerEvents": "none",
      "z-index": "10000000",
      "fontSize": "20px",
      "will-change": "transform"
    };
    this.init = function(x, y, color) {
      this.velocity = {
        x:  (Math.random() < 0.5 ? -1 : 1) * (Math.random() / 2),
        y: 1
      };
      this.position = {x: x - 10, y: y - 20};
      this.initialStyles.color = color;
      console.log(color);

      this.element = document.createElement('span');
      this.element.innerHTML = this.character;
      applyProperties(this.element, this.initialStyles);
      this.update();
      
      document.body.appendChild(this.element);
    };
    this.update = function() {
      this.position.x += this.velocity.x;
      this.position.y += this.velocity.y;
      this.lifeSpan--;
      this.element.style.transform = "translate3d(" + this.position.x + "px," + this.position.y + "px,0) scale(" + (this.lifeSpan / 120) + ")";
    }
    this.die = function() {
      this.element.parentNode.removeChild(this.element);
    }
  }
  function applyProperties( target, properties ) {
    for( var key in properties ) {
      target.style[ key ] = properties[ key ];
    }
  }
  init();
})();

explosion.min.js

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"use strict";function updateCoords(e){pointerX=(e.clientX||e.touches[0].clientX)-canvasEl.getBoundingClientRect().left,pointerY=e.clientY||e.touches[0].clientY-canvasEl.getBoundingClientRect().top}function setParticuleDirection(e){var t=anime.random(0,360)*Math.PI/180,a=anime.random(50,180),n=[-1,1][anime.random(0,1)]*a;return{x:e.x+n*Math.cos(t),y:e.y+n*Math.sin(t)}}function createParticule(e,t){var a={};return a.x=e,a.y=t,a.color=colors[anime.random(0,colors.length-1)],a.radius=anime.random(16,32),a.endPos=setParticuleDirection(a),a.draw=function(){ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.fillStyle=a.color,ctx.fill()},a}function createCircle(e,t){var a={};return a.x=e,a.y=t,a.color="#F00",a.radius=0.1,a.alpha=0.5,a.lineWidth=6,a.draw=function(){ctx.globalAlpha=a.alpha,ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.lineWidth=a.lineWidth,ctx.strokeStyle=a.color,ctx.stroke(),ctx.globalAlpha=1},a}function renderParticule(e){for(var t=0;t<e.animatables.length;t++){e.animatables[t].target.draw()}}function animateParticules(e,t){for(var a=createCircle(e,t),n=[],i=0;i<numberOfParticules;i++){n.push(createParticule(e,t))}anime.timeline().add({targets:n,x:function(e){return e.endPos.x},y:function(e){return e.endPos.y},radius:0.1,duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule}).add({targets:a,radius:anime.random(80,160),lineWidth:0,alpha:{value:0,easing:"linear",duration:anime.random(600,800)},duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule,offset:0})}function debounce(e,t){var a;return function(){var n=this,i=arguments;clearTimeout(a),a=setTimeout(function(){e.apply(n,i)},t)}}var canvasEl=document.querySelector(".fireworks");if(canvasEl){var ctx=canvasEl.getContext("2d"),numberOfParticules=30,pointerX=0,pointerY=0,tap="mousedown",colors=["#FF1461","#18FF92","#5A87FF","#FBF38C"],setCanvasSize=debounce(function(){canvasEl.width=2*window.innerWidth,canvasEl.height=2*window.innerHeight,canvasEl.style.width=window.innerWidth+"px",canvasEl.style.height=window.innerHeight+"px",canvasEl.getContext("2d").scale(2,2)},500),render=anime({duration:1/0,update:function(){ctx.clearRect(0,0,canvasEl.width,canvasEl.height)}});document.addEventListener(tap,function(e){"sidebar"!==e.target.id&&"toggle-sidebar"!==e.target.id&&"A"!==e.target.nodeName&&"IMG"!==e.target.nodeName&&(render.play(),updateCoords(e),animateParticules(pointerX,pointerY))},!1),setCanvasSize(),window.addEventListener("resize",setCanvasSize,!1)}"use strict";function updateCoords(e){pointerX=(e.clientX||e.touches[0].clientX)-canvasEl.getBoundingClientRect().left,pointerY=e.clientY||e.touches[0].clientY-canvasEl.getBoundingClientRect().top}function setParticuleDirection(e){var t=anime.random(0,360)*Math.PI/180,a=anime.random(50,180),n=[-1,1][anime.random(0,1)]*a;return{x:e.x+n*Math.cos(t),y:e.y+n*Math.sin(t)}}function createParticule(e,t){var a={};return a.x=e,a.y=t,a.color=colors[anime.random(0,colors.length-1)],a.radius=anime.random(16,32),a.endPos=setParticuleDirection(a),a.draw=function(){ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.fillStyle=a.color,ctx.fill()},a}function createCircle(e,t){var a={};return a.x=e,a.y=t,a.color="#F00",a.radius=0.1,a.alpha=0.5,a.lineWidth=6,a.draw=function(){ctx.globalAlpha=a.alpha,ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.lineWidth=a.lineWidth,ctx.strokeStyle=a.color,ctx.stroke(),ctx.globalAlpha=1},a}function renderParticule(e){for(var t=0;t<e.animatables.length;t++){e.animatables[t].target.draw()}}function animateParticules(e,t){for(var a=createCircle(e,t),n=[],i=0;i<numberOfParticules;i++){n.push(createParticule(e,t))}anime.timeline().add({targets:n,x:function(e){return e.endPos.x},y:function(e){return e.endPos.y},radius:0.1,duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule}).add({targets:a,radius:anime.random(80,160),lineWidth:0,alpha:{value:0,easing:"linear",duration:anime.random(600,800)},duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule,offset:0})}function debounce(e,t){var a;return function(){var n=this,i=arguments;clearTimeout(a),a=setTimeout(function(){e.apply(n,i)},t)}}var canvasEl=document.querySelector(".fireworks");if(canvasEl){var ctx=canvasEl.getContext("2d"),numberOfParticules=30,pointerX=0,pointerY=0,tap="mousedown",colors=["#FF1461","#18FF92","#5A87FF","#FBF38C"],setCanvasSize=debounce(function(){canvasEl.width=2*window.innerWidth,canvasEl.height=2*window.innerHeight,canvasEl.style.width=window.innerWidth+"px",canvasEl.style.height=window.innerHeight+"px",canvasEl.getContext("2d").scale(2,2)},500),render=anime({duration:1/0,update:function(){ctx.clearRect(0,0,canvasEl.width,canvasEl.height)}});document.addEventListener(tap,function(e){"sidebar"!==e.target.id&&"toggle-sidebar"!==e.target.id&&"A"!==e.target.nodeName&&"IMG"!==e.target.nodeName&&(render.play(),updateCoords(e),animateParticules(pointerX,pointerY))},!1),setCanvasSize(),window.addEventListener("resize",setCanvasSize,!1)};

在themes\next\layout新建文件夹_custom

在文件夹_custom新建custom.swig文件，添加下面代码

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这里因为包含标签，显示不出来，就把{},换成[]，记得改过来
[%- if theme.cursor_effect %]
  [%- if theme.cursor_effect.type == "explosion" %]
    <canvas class="fireworks" style="position: fixed;left: 0;top: 0;z-index: 1; pointer-events: none;" ></canvas>
    <script src="//cdn.bootcss.com/animejs/2.2.0/anime.min.js"></script>
    <script src="/js/cursor/explosion.min.js"></script>
  [%- elseif theme.cursor_effect.type == "cherry" %]
    <script src="/js/cursor/cherry.js"></script>
  [%- endif %]
[%- endif %]

在themes\next\layout下找到_layout.swig，添加下面代码

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记得把 [] 转换成 {} 
[% include '_custom/custom.swig' %]

最后在主题配置文件_config.yml，添加下面代码，type选择不同特效

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# cherry: 樱花 | explosion：爆炸 
cursor_effect:
  enabled: true
  type: cherry

启动服务就可以看到特效了

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