组件

<template>
  <canvas :class="cvsClass" :width="props.width" :height="props.height" ref="cvs"></canvas>
</template>

<script setup>
import { ref, reactive, watch, nextTick } from "vue";
const props = defineProps({
  // 是否开启服务端验证
  servertest: {
    type: Boolean,
    default: false
  },
  width: {
    type: Number,
    default: 220
  },
  height: {
    type: Number,
    default: 45
  },
  strokeWidth: {
    type: Number,
    default: 3
  },
  // 滑块宽度
  dropWidth: {
    type: Number,
    default: 50
  },
  // 已激活验证背景色 activeBgColor | 验证中激活的背景色 testIngBgColor| 验证成功激活的背景色 successBgColor
  // 验证成功文本色 tipSucColor| 验证失败文本色 tipTailColor | 验证中的文本色 tipTestIngColor | 待验证文本色 tipNoneColor
  // 移动滑块背景色 dropColor
  // 滑块原始背景色  slideColor
  // 滑块颜色
  dropColor: {
    type: String,
    default: "#fff"
  },
  // 待验证文本色
  tipNoneColor: {
    type: String,
    default: "#000"
  },
  // 验证成功文本色
  tipSucColor: {
    type: String,
    default: "#fff"
  },
  // 验证中的文本色
  tipTestIngColor: {
    type: String,
    default: "#fff"
  },
  // 验证失败文本色
  tipTailColor: {
    type: String,
    default: "#ee0a24"
  },
  // 验证中提示
  testTip: {
    type: String,
    default: "正在验证..."
  },
  // 滑块背景色颜色
  slideColor: {
    type: String,
    default: "#fff"
  },
  // 滑块背景色颜色
  tipTxt: {
    type: String,
    default: "拖动滑块验证"
  },
  // 验证通过背景色
  successBgColor: {
    type: String,
    default: "#07c160"
  },
  //  验证失败背景色
  tailBgColor: {
    type: String,
    default: "#ee0a24"
  },
  // 已激活的背景色
  activeBgColor: {
    type: String,
    default: "#888"
  },
  // 验证中激活的背景色
  testIngBgColor: {
    type: String,
    default: "#ff976a"
  },
  // 验证成功文字提示
  successTip: {
    type: String,
    default: "恭喜你验证通过！"
  },
  // 验证失败文字提示
  failTip: {
    type: String,
    default: "验证失败，请重试"
  },
  // 文本大小
  fontSize: {
    type: Number,
    default: 14
  }
});
const emit = defineEmits(["statu"]);
let vfcx = null;
const cvs = ref();
const cvsClass = ref("cur-none");
let vfcres = {
  startX: 0, //开始拖动滑块位置
  endX: 0, //结束拖动滑块位置
  timed: 0, //拖动所用时间 || 低于30毫秒认定为机器
  guiji: [], //拖动轨迹 | 连续2个2数之差相同判定为机器
  width: props.width
};
const vfcStatu = reactive({
  statu: "none"
});
// 监听数据，并发给父级
watch(vfcStatu, res => {
  emit("statu", res, vfcres);
  // 验证成功
  if (res.statu === "success") {
    vfcx.anmateOff = false;
    vfcx.activeBgColor = props.successBgColor;
    vfcx.tipTxt = props.successTip;
    vfcx.colors.slideColor = props.successBgColor;
    vfcx.evNone();
  } else if (res.statu === "tail") {
    vfcx.reset();
    vfcx.tipTxt = props.failTip;
    vfcx.fontColor = props.tipTailColor;
    vfcx.draw();
  }
});
/**
 * 验证器
 * @param {Element} cvsEl canvas元素
 * @param {String, default:'cur-none'} cvsClass canvas的class
 * @param {Boolear, default:fasle} vfcres 验证结果
 * @param {Number, default:5} strokeWidth 滑块内边距
 * @param {Number,default:50} dropWidth 滑块宽度
 * @param {color,default:'#fff'} dropColor 移动滑块背景色
 * @param {color,default:'#e8e8e8'} slideColor 滑块背景色颜色
 * @param {color,default:'skyblue'} activeBgColor 已激活验证背景色
 * @param {color,default:'#ff976a'} testIngBgColor 验证中激活的背景色
 * @param {color,default:'#07c160'} successBgColor 验证成功激活的背景色
 * @param {color,default:'#07c160'} tipSucColor 验证成功文本色
 * @param {color,default:'#ee0a24'} tipTailColor 验证失败文本色
 * @param {color,default:'#fff'} tipTestIngColor 验证中的文本色
 * @param {color,default:'#000'} tipNoneColor 待验证文本色
 * @param {String,default:'向右滑动验证'} tipTxt 文字提示
 * @param {String,default:'太棒了，恭喜你验证通过！'} successTip 验证成功文字提示
 * @param {String,default:'验证失败，请重试...'} failTip 验证失败文字提示
 * @param {Bool} servertest 是否开启前端验证模式
 * @param {String} testTip 验证提示
 */
class Vfcs {
  constructor(cvsEl, cvsClass, vfcres, vfcStatu, strokeWidth, dropWidth, fontSize, servertest, colors, tipTxt) {
    this.cvsEl = cvsEl;
    this.vfcres = vfcres;
    this.cvsClass = cvsClass;
    this.strokeWidth = strokeWidth;
    this.dropWidth = dropWidth;
    this.vfcStatu = vfcStatu;
    this.colors = colors;
    this.fontSize = fontSize;
    this.dwonIsPath = false; //是否按下验证滑块
    this.ctx = null;
    this.allTipTxts = tipTxt;
    this.tipTxt = this.allTipTxts.tipTxt;
    this.fontColor = this.colors.tipNoneColor;
    this.activeBgColor = this.colors.activeBgColor;
    this.servertest = servertest;
    this.guiji = [];
    this.startTime = 0;
    this.endTime = 0;
    this.startX = 0;
    this.startY = 0;
    this.moveX = 0;
    this.moveY = 0;
    this.fontOp = 1; //文本透明度
    this.met = false;
    this.offX = 0; //x轴的位移
    this.minX = this.strokeWidth / 2;
    this.maxX = this.cvsEl.width - this.dropWidth - this.strokeWidth;
    // this.dropX最大值 -》  cW - this.dropWidth - this.strokeWidth / 2
    // this.dropX最小 -》   this.strokeWidth / 2
    this.dropX = this.minX + this.offX; // 滑块位置
    this.toTouchEnd = false;
    //是否按下滑块
    this.isDown = false;
    this.testAm = null; //验证中动画的id
    this.anmateOff = true; //动画开关
    this.evsName = []; //事件名
    this.evsFun = [this.down.bind(this), this.move.bind(this), this.up.bind(this)]; //事件方法
    this.init();
  }
  init() {
    this.ctx = this.cvsEl.getContext("2d");
    this.draw();
    this.evsName = this.evType();
    // 给canvas添加事件
    this.evsName.forEach((evName, i) => (i === 0 ? this.cvsEl.addEventListener(evName, this.evsFun[i]) : document.addEventListener(evName, this.evsFun[i])));
  }
  // 绘制
  draw() {
    let cW = this.cvsEl.width,
      cH = this.cvsEl.height,
      c = this.ctx;
    c.clearRect(0, 0, cW, cH);
    c.globalAlpha = this.fontOp; // 设置图像透明度
    c.fillRect(0, 0, cW, cH);
    c.fillStyle = this.colors.slideColor;
    c.strokeStyle = this.colors.slideColor;
    c.lineWidth = this.strokeWidth;
    c.fillRect(0, 0, cW, cH);
    c.strokeRect(0, 0, cW, cH);
    // 激活背景色
    c.fillStyle = this.activeBgColor;
    c.strokeStyle = this.activeBgColor;
    c.fillRect(this.minX + 2, this.minX, this.offX, cH - this.strokeWidth);
    // 文本提示
    c.textAlign = "center";
    c.textBaseline = "middle";
    c.fillStyle = this.fontColor;
    c.font = `${this.fontSize}px 黑体`;
    c.fillText(this.tipTxt, cW / 2, cH / 2);
    // 验证失败
    // 待验证 | 验证中
    if (this.vfcStatu.statu === "none" || this.vfcStatu.statu === "testing" || this.vfcStatu.statu === "servertest" || this.vfcStatu.statu === "tail") {
      // 滑块
      c.beginPath();
      c.fillStyle = this.colors.dropColor;
      c.rect(this.dropX, this.minX, this.dropWidth, cH - this.strokeWidth);
      c.fill();
      // 箭头
      c.lineWidth = 2;
      // 右边箭头
      c.moveTo(this.dropX + this.dropWidth / 1.7 - 5, this.strokeWidth + 10);
      c.lineTo(this.dropX + this.dropWidth / 1.7 + 5, cH / 2);
      c.lineTo(this.dropX + this.dropWidth / 1.7 - 5, cH - this.strokeWidth - 10);
      // 左边箭头
      c.moveTo(this.dropX + this.dropWidth / 1.7 - 15, this.strokeWidth + 10);
      c.lineTo(this.dropX + this.dropWidth / 1.7 - 5, cH / 2);
      c.lineTo(this.dropX + this.dropWidth / 1.7 - 15, cH - this.strokeWidth - 10);
      c.stroke();
      c.closePath();
      // 验证成功
    } else if (this.vfcStatu.statu === "success") {
      // 滑块
      c.beginPath();
      c.fillStyle = this.colors.dropColor;
      c.rect(this.dropX, this.minX, this.dropWidth, cH - this.strokeWidth);
      c.fill();
      c.closePath();
      // 圈
      c.beginPath();
      c.fillStyle = this.colors.successBgColor;
      c.arc(this.dropWidth / 2 + this.dropX, cH / 2, cH / 3, 0, 2 * Math.PI);
      c.fill();
      c.closePath();
      // 勾
      c.beginPath();
      c.lineWidth = 3;
      c.lineJoin = "bevel";
      c.lineCap = "round";
      c.strokeStyle = this.colors.dropColor;
      c.moveTo(this.dropX + this.dropWidth / 2 - 8, cH / 2 + 1);
      c.lineTo(this.dropX + this.dropWidth / 2.1, cH / 1.6);
      c.lineTo(this.dropX + this.dropWidth / 2 + 8, cH / 2 - 5);
      c.stroke();
      c.closePath();
    }
  }
  // 滑块按下
  down(ev) {
    if (this.vfcStatu.statu === "testing" || this.vfcStatu.statu === "servertest") return;
    this.setXY(ev);
    //按下滑块
    this.isDown = true;
    this.startTime = new Date().getTime();
    // 若按下滑块
    const isPath = this.ctx.isPointInPath(this.startX, this.startY);
    this.dwonIsPath = isPath;
  }
  // 滑块移动
  move(ev) {
    if (this.vfcStatu.statu === "testing" || this.vfcStatu.statu === "servertest") return;
    this.setXY(ev);
    const isPath = this.ctx.isPointInPath(this.moveX, this.moveX);
    // pc 鼠标变手势
    if (ev.x) isPath === true ? (this.cvsClass.value = "pointer") : (this.cvsClass.value = "cur-none");
    const x = Number(this.moveX.toFixed(2));
    const y = Number(this.moveY.toFixed(2));
    const moveTime = new Date().getTime();
    this.guiji.push({ x, y, moveTime });
    if (this.dwonIsPath === false || this.moveX <= 0) return;
    if (this.isDown === true) {
      // 若滑到尾部
      this.toTouchEnd = this.touchDrosToEnd();
      if (this.toTouchEnd === true) this.up();
      this.draw();
    }
  }
  // 滑块抬起
  up() {
    if (this.vfcStatu.statu === "testing" || this.vfcStatu.statu === "servertest" || this.offX === 0 || this.dwonIsPath === false || this.moveX <= 0) return;
    this.endTime = new Date().getTime();
    this.vfcres.startX = this.startX; //鼠标/手指按下位置
    this.vfcres.endX = this.dropX + this.dropWidth + this.minX; //鼠标/手指抬起位置
    this.vfcres.timed = this.endTime - this.startTime; //耗时
    this.vfcres.guiji = this.guiji; //滑动轨迹
    this.vfcres.width = this.cvsEl.width;
    this.dwonIsPath = false;
    this.isDown = false;
    // 未滑动到尾部
    if (this.toTouchEnd === false) {
      this.dropX = this.minX; // 滑块位置
      this.offX = 0;
      this.tipTxt = this.allTipTxts.failTip;
      this.fontColor = this.colors.tipTailColor;
      // 滑动到尾部
    } else {
      this.vfcStatu.statu = "testing";
      this.testAdmate(); //开启动画
      // 验证中
      this.fontColor = this.colors.tipTestIngColor;
      this.tipTxt = this.allTipTxts.testTip;
      this.activeBgColor = this.colors.testIngBgColor;
      this.dropX = this.maxX + this.minX; // 滑块位置
      const test = this.testVer();
      setTimeout(() => {
        // 前端验证通过
        if (test === "success") {
          // 已开启前端验证模式
          if (this.servertest === true) {
            this.vfcStatu.statu = "servertest";
          } else {
            this.vfcStatu.statu = "success";
          }
          // 前端验证不通过
        } else {
          this.vfcStatu.statu = "tail";
        }
      }, 1000);
    }
    this.draw();
    this.guiji = [];
  }
  // 重置滑块
  reset() {
    this.dropX = this.minX; // 滑块位置
    this.anmateOff = false;
    this.activeBgColor = this.colors.activeBgColor;
    this.fontColor = this.colors.tipNoneColor;
    this.tipTxt = this.allTipTxts.tipTxt;
    this.offX = 0;
    this.toTouchEnd = false;
    this.guiji = [];
    this.draw();
  }
  // 解绑事件
  evNone() {
    this.evsName.forEach((evName, i) => (i === 0 ? this.cvsEl.removeEventListener(evName, this.evsFun[i]) : document.removeEventListener(evName, this.evsFun[i])));
  }
  // 验证中动画
  testAdmate() {
    // 文本透明度
    if (this.met === false && this.fontOp >= 1) {
      this.met = true;
    } else if (this.met === true && this.fontOp <= 0.5) {
      this.met = false;
    }
    this.met === false ? (this.fontOp += 0.015) : (this.fontOp -= 0.015);
    this.draw();
    cancelAnimationFrame(this.testAm);
    this.testAm = window.requestAnimationFrame(this.testAdmate.bind(this));
    if (this.anmateOff === false) {
      cancelAnimationFrame(this.testAm);
      this.fontOp = 1;
      this.testAm = null;
      this.met = false;
      this.anmateOff = true;
    }
    this.draw();
  }
  /**
   * 验证是否滑动到尾部
   * @return {Number}  return true 到尾部，false 没到尾部
   */
  touchDrosToEnd() {
    const x = this.offX + this.dropWidth + this.strokeWidth;
    const isSuccess = x >= this.cvsEl.width;
    return isSuccess;
  }
  // 设置xy坐标
  setXY(ev) {
    if (ev.type === "touchstart") {
      this.startX = ev.touches[0].clientX - this.cvsEl.getBoundingClientRect().left;
      this.startY = ev.touches[0].clientY - this.cvsEl.getBoundingClientRect().top;
    }
    if (ev.type === "touchmove") {
      this.moveX = ev.touches[0].clientX - this.cvsEl.getBoundingClientRect().left;
      this.moveY = ev.touches[0].clientY - this.cvsEl.getBoundingClientRect().top;
    }
    // ///pc事件 //
    if (ev.type === "mousedown") {
      this.startX = ev.x - this.cvsEl.getBoundingClientRect().left;
      this.startY = ev.y - this.cvsEl.getBoundingClientRect().top;
    }
    if (ev.type === "mousemove") {
      this.moveX = ev.x - this.cvsEl.getBoundingClientRect().left;
      this.moveY = ev.y - this.cvsEl.getBoundingClientRect().top;
    }
    // 防止滑块溢出指定范围
    if (ev.type === "mousemove" || ev.type === "touchmove") {
      this.offX = this.moveX - this.startX;
      if (this.offX > this.maxX) this.offX = this.maxX;
      if (this.offX < this.minX) this.offX = this.minX;
      this.dropX = this.minX + this.offX; // 滑块位置
    }
  }
  // 事件类型
  evType() {
    const isMobile = navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i) !== null;
    const events = isMobile ? ["touchstart", "touchmove", "touchend"] : ["mousedown", "mousemove", "mouseup"];
    return events;
  }
  /**
   * 滑动轨迹信息 | 计算滑动轨迹每2数之间的差值 | 出现次数等
   * @return {Object(chaArr,repeatX,repeatY,repeatMaxXCount,repeatMaxYCount,allCount)} chaArr → 每2数之间的插值 | repeatX → x轴每2数之间的差值与重复数  | repeatY → y轴每2数之间的差值与重复数 |  repeatMaxXCount → x轴每重复数最多的次数 | repeatMaxYCount → y轴每重复数最多的次数
   */
  arrCmp() {
    // 重复的数量
    const repeatX = [];
    const repeatY = [];
    const timed = [];
    const chaArr = this.guiji.reduce((prev, itm, i, arr) => {
      if (i === arr.length - 1) return prev;
      const nv = arr[i + 1];
      const chaX = Number((nv.x - itm.x).toFixed(2));
      const chaY = Number((nv.y - itm.y).toFixed(2));
      const timeCha = nv.moveTime - itm.moveTime;
      timed.push(timeCha); //时间差
      // 是否有重复的数组
      const repeatXIndex = repeatX.findIndex(item => item.num === chaX);
      const repeatYIndex = repeatY.findIndex(item => item.num === chaY);
      // xy轴每2数差数据
      if (repeatXIndex === -1) {
        const obj = {
          num: chaX,
          count: 1
        };
        repeatX.push(obj);
      } else {
        repeatX[repeatXIndex].count++;
      }
      if (repeatYIndex === -1) {
        const obj = {
          num: chaY,
          count: 1
        };
        repeatY.push(obj);
      } else {
        repeatY[repeatYIndex].count++;
      }
      prev.push({ x: chaX, y: chaY });
      return prev;
    }, []);
    // 所有重复次数
    const findXCount = [];
    const findYCount = [];
    repeatX.forEach(it => findXCount.push(it.count));
    repeatY.forEach(it => findYCount.push(it.count));
    const repeatMaxXCount = Math.max(...findXCount); //x重复最多的次数
    const repeatMaxYCount = Math.max(...findYCount); //y重复最多的次数
    const repeatMaxTimed = Math.max(...timed); //滑动时间重复最多的次数
    return {
      chaArr,
      repeatX,
      repeatY,
      repeatMaxXCount,
      repeatMaxYCount,
      repeatMaxTimed
    };
  }
  // 前端验证
  //  x轴最大波动大于数等于所有波动长度则为人机 | y轴最大波动数等于所有波动长度则为人机 | 滑动时间低于50毫秒不通过  | 时间波动最大次数大于滑动轨迹长度的3/1为人机
  testVer() {
    // return 'tail'
    // 滑动所用时间低于50毫秒 是人机
    if (this.vfcres.timed < 50) return "tail";
    const sliderInfo = this.arrCmp(); //处理滑动轨迹信息
    // 时间波动最大次数等于sliderInfo.chaArr.length滑动轨迹长度为人机
    const timeTest = sliderInfo.repeatMaxTimed === sliderInfo.chaArr.length;
    if (timeTest === true) return "tail";
    // x轴最大波动大于数等于所有波动长度则为人机
    if (sliderInfo.repeatMaxXCount === sliderInfo.repeatX) return "tail";
    //  y轴最大波动数等于所有波动长度则为人机
    if (sliderInfo.repeatMaxYCount === sliderInfo.chaArr.length) return "tail";
    // 是真人
    return "success";
  }
}
nextTick(() => {
  const colors = {
    activeBgColor: props.activeBgColor,
    testIngBgColor: props.testIngBgColor,
    successBgColor: props.successBgColor,
    tipSucColor: props.tipSucColor,
    tipTailColor: props.tipTailColor,
    tipTestIngColor: props.tipTestIngColor,
    tipNoneColor: props.tipNoneColor,
    dropColor: props.dropColor,
    slideColor: props.slideColor
  };
  const tipTxt = {
    testTip: props.testTip,
    tipTxt: props.tipTxt,
    successTip: props.successTip,
    failTip: props.failTip
  };
  vfcx = new Vfcs(cvs.value, cvsClass, vfcres, vfcStatu, props.strokeWidth, props.dropWidth, props.fontSize, props.servertest, colors, tipTxt);
});
</script>

页面调用

<slider-vfc @statu="slideVerify" />
// 滑块验证
const slideVerify = vfcStatu => {
  props.form.verify = vfcStatu.statu == "success";
};