vue_elementui拖住滑块拼图验证代码

女爷i 2021-12-12 20:55 693阅读 0赞

vue拖住滑块拼图验证，以下是cavas直接写的滑块拼图验证码，直接复制引用即可  
转载请注明本宝宝，点个赞，  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODM3Mzg3NQ_size_16_color_FFFFFF_t_70]

<template>
      <div id="puzzle" ref="puzzle" style="display:inline-block;">
      
        <div class="puzzle-container"
         >
          <div :style="'position:relative;overflow:hidden;width:'+ dataWidth +'px;'">
            <div :style="'position:relative;width:' + dataWidth + 'px;height:' + dataHeight + 'px;'">
              <img
                id="scream"
                ref="scream"
                :src="imgRandom"
                :style="'width:' + dataWidth + 'px;height:' + dataHeight + 'px;'"
              />
              <canvas id="puzzle-box" ref="puzzleBox" :width="dataWidth" :height="dataHeight"></canvas>
            </div>
            <div
              class="puzzle-lost-box"
              :style="'left:' + left_Num + 'px;width:' + dataWidth + 'px;height:' + dataHeight + 'px;'"
            >
              <canvas id="puzzle-shadow" ref="puzzleShadow" :width="dataWidth" :height="dataHeight"></canvas>
              <canvas id="puzzle-lost" ref="puzzleLost" :width="dataWidth" :height="dataHeight"></canvas>
            </div>
            <p
              class="ver-tips"
              ref="verTips"
              :style="'height: '+22*scale+'px;line-height:'+22*scale+'px;bottom: ' + (displayTips==true ? 0 : -22*scale ) +'px;font-size: '+12*scale+'px;'"
            >
              <template v-if="verification">
                <span :style="'color:#42ca6b;line-height:'+ 22*scale+'px;'">验证通过</span>
                <span :style="'margin-left:'+4*scale+'px;line-height:'+ 22*scale+'px;'">哇喔,怪物吃了拼图,快去登录吧~</span>
              </template>
              <template v-if="!verification">
                <span :style="'color:red;line-height:'+22*scale+'px;'">验证失败:</span>
                <span :style="'margin-left:'+4*scale+'px;line-height:'+ 22*scale+'px;'">拖动滑块将悬浮图像正确拼合</span>
              </template>
            </p>
          </div>
          <div
            class="re-btn"
            @click="refreshImg"
            :style="'height: '+28*scale+'px;padding: '+1*scale+'px '+16*scale+'px;font-size: '+18*scale+'px;'"
          >
            <a-icon type="redo" />
          </div>
        </div>
        <br />
        <div class="slider-container" :style="'width:' + dataWidth + 'px;'">
          <div class="slider-bar" :style="'border-radius:'+ 24*scale+'px;'">
            <p
              class="slider-bar-text select-none"
              onselectstart="return false"
              :style="'line-height:' + 28*scale + 'px;font-size:'+12*scale+'px;'"
            >按住滑块， 拖动完成上方拼图</p>
          </div>
          <div
            class="slider-btn"
            ref="sliderBtn"
            @mousedown="startMove"
            @touchstart="startMove"
            :style="'top: '+ -7*scale + 'px;'"
          >
            <a-icon
              type="pause-circle"
              theme="twoTone"
              twoToneColor="#52c41a"
              :style="'font-size: '+44*scale+'px;'"
            />
            <span class="slider-center-zzz">▍▍▍</span>
          </div>
        </div>
      </div>
    </template>
    
    <script lang="js">
    
    export default {
      name: 'puzzle',
      data () {
        return {
          moveStart: '',
          displayTips: false,
          verification: false,
          randomX: null,
          randomY: null,
          imgRandom: '',
          left_Num: 0,
          dataWidth: 404,
          dataHeight: 90,
          puzzleSize: 100,
          deviation: 11,
          scale: 1,
          reTimer: null,
          isleavePage: false
        }
      },
      props: {
        width: {
          type: [String, Number],
          default: 340
        },
        height: {
          type: [String, Number],
          default: 120
        },
        cropImage: {
          type: [Boolean],
          default: false
        },
        puzzleImgList: {
          type: Array,
          default: () => [
            '../../../static/img/a.png',
          ]
        },
        PlSize: {
          type: [String, Number],
          default: 48
        },
        Deviation:{
          type: [String, Number],
          default: 4
        },
        padding: {
          type: [Number],
          default: 20
        },
        onSuccess: {
          type: Function,
          default: () => {
            alert('验证成功')
          }
        },
        onError: {
          type: Function,
          default: () => {
            alert('验证失败')
          }
        }
      },
      methods: {
        /* 刷新 */
        RandomNum(Min, Max) {
          let Range = Max - Min + 1
          let Rand = Math.random()
          return Min + Math.floor(Rand * Range)
        },
        refreshImg () {
          let imgRandomNum = this.RandomNum(0, this.puzzleImgList.length-1)
          this.imgRandom = this.puzzleImgList[imgRandomNum]
          this.initCanvas()
        },
        /* 画布初始化 */
        initCanvas () {
          this.clearCanvas()
    
          // let self = this
          let w = this.dataWidth
          let h = this.dataHeight
          // let PL_Size = 48
          // 2019-02-12开始PL_Size使用可传递参数
          let PL_Size = this.puzzleSize
          let padding = 20
          let MinN_X = padding + PL_Size
          let MaxN_X = w - padding - PL_Size - PL_Size / 6
          let MaxN_Y = padding
          let MinN_Y = h - padding - PL_Size - PL_Size / 6
          this.randomX = this.RandomNum(MinN_X, MaxN_X)
          this.randomY = this.RandomNum(MinN_Y, MaxN_Y)
          let X = this.randomX
          let Y = this.randomY
          this.left_Num = -X + 10
          let d = PL_Size / 3
    
          let c = this.$refs.puzzleBox
          let c_l = this.$refs.puzzleLost
          let c_s = this.$refs.puzzleShadow
          let ctx = c.getContext('2d')
          let ctx_l = c_l.getContext('2d')
          let ctx_s = c_s.getContext('2d')
          ctx.globalCompositeOperation = 'xor'
          ctx.shadowBlur = 10
          ctx.shadowColor = '#fff'
          ctx.shadowOffsetX = 3
          ctx.shadowOffsetY = 3
          ctx.fillStyle = 'rgba(0,0,0,0.7)'
          ctx.beginPath()
          ctx.lineWidth = '1'
          ctx.strokeStyle = 'rgba(0,0,0,0)'
          ctx.moveTo(X, Y)
          ctx.lineTo(X + d, Y)
          ctx.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
          ctx.lineTo(X + 3 * d, Y)
          ctx.lineTo(X + 3 * d, Y + d)
          ctx.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
          ctx.lineTo(X + 3 * d, Y + 3 * d)
          ctx.lineTo(X, Y + 3 * d)
          ctx.closePath()
          ctx.stroke()
          ctx.fill()
    
          let img = new Image()
          img.src = this.imgRandom
          img.onload = function () {
            ctx_l.beginPath()
            ctx_l.strokeStyle = 'rgba(0,0,0,0)'
            ctx_l.moveTo(X, Y)
            ctx_l.lineTo(X + d, Y)
            ctx_l.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
            ctx_l.lineTo(X + 3 * d, Y)
            ctx_l.lineTo(X + 3 * d, Y + d)
            ctx_l.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
            ctx_l.lineTo(X + 3 * d, Y + 3 * d)
            ctx_l.lineTo(X, Y + 3 * d)
            ctx_l.closePath()
            ctx_l.stroke()
            ctx_l.shadowBlur = 10
            ctx_l.shadowColor = 'black'
            ctx_l.clip()
            ctx_l.drawImage(img, 0, 0, w, h)
    
          }
          ctx_s.beginPath()
          ctx_s.lineWidth = '1'
          ctx_s.strokeStyle = 'rgba(0,0,0,0)'
          ctx_s.moveTo(X, Y)
          ctx_s.lineTo(X + d, Y)
          ctx_s.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
          ctx_s.lineTo(X + 3 * d, Y)
          ctx_s.lineTo(X + 3 * d, Y + d)
          ctx_s.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
          ctx_s.lineTo(X + 3 * d, Y + 3 * d)
          ctx_s.lineTo(X, Y + 3 * d)
          ctx_s.closePath()
          ctx_s.stroke()
          ctx_s.shadowBlur = 20
          ctx_s.shadowColor = 'black'
          ctx_s.fill()
        },
        /* 通过重置画布尺寸清空画布，这种方式更彻底 */
        clearCanvas () {
          let c = this.$refs.puzzleBox
          let c_l = this.$refs.puzzleLost
          let c_s = this.$refs.puzzleShadow
          c.setAttribute('height', c.getAttribute('height'))
          c_l.setAttribute('height', c.getAttribute('height'))
          c_s.setAttribute('height', c.getAttribute('height'))
          // c.height = c.height
          // c_l.height = c_l.height
          // c_s.height = c_s.height
        },
        /* 按住滑块后初始化移动监听，记录初始位置 */
        startMove (e) {
          console.log(e)
          e = e || window.event
          this.$refs.sliderBtn.style.backgroundPosition = '0 -216px'
          this.moveStart = e.pageX || e.targetTouches[0].pageX
          this.addMouseMoveListener()
        },
        /* 滑块移动 */
        moving (e) {
          let self = this
          e = e || window.event
          let moveX = e.pageX || e.targetTouches[0].pageX
          let d = moveX - self.moveStart
          let w = self.dataWidth
          let PL_Size = this.puzzleSize
          let padding = 20
          if (self.moveStart === '') {
            return ''
          }
          if (d < 0 || d > (w - padding - PL_Size)) {
            return ''
          }
          self.$refs.sliderBtn.style.left = d + 'px'
          self.$refs.sliderBtn.style.transition = 'inherit'
          self.$refs.puzzleLost.style.left = d + 'px'
          self.$refs.puzzleLost.style.transition = 'inherit'
          self.$refs.puzzleShadow.style.left = d + 'px'
          self.$refs.puzzleShadow.style.transition = 'inherit'
        },
        /* 移动结束，验证并回调 */
        moveEnd (e) {
          let self = this
          e = e || window.event
          let moveEnd_X = (e.pageX || e.changedTouches[0].pageX) - self.moveStart
          let ver_Num = self.randomX - 10
          let deviation = this.deviation
          let Min_left = ver_Num - deviation
          let Max_left = ver_Num + deviation
          if (self.moveStart !== '') {
            if (Max_left > moveEnd_X && moveEnd_X > Min_left) {
                
              self.displayTips = true
              self.verification = true
              setTimeout(function () {
                if(self.isleavePage){
                  return
                }
                self.displayTips = false
                self.initCanvas()
              }, 2000)
              /* 成功的回调函数 */
              self.onSuccess()
            } else {
              self.displayTips = true
              self.verification = false
              setTimeout(function () {
                if(self.isleavePage){
                  return
                }
                self.displayTips = false
              }, 2000)
              /* 失败的回调函数 */
              self.onError()
            }
          }
          if (typeof(self.$refs.sliderBtn) !== 'undefined' && typeof (self.$refs.puzzleLost) !== 'undefined' && typeof (self.$refs.puzzleShadow) !== 'undefined') {
            self.reTimer = setTimeout(function () {
              if(self.isleavePage){
                return
              }
              self.$refs.sliderBtn.style.left = 0
              self.$refs.sliderBtn.style.transition = 'left 0.5s'
              self.$refs.puzzleLost.style.left = 0
              self.$refs.puzzleLost.style.transition = 'left 0.5s'
              self.$refs.puzzleShadow.style.left = 0
              self.$refs.puzzleShadow.style.transition = 'left 0.5s'
            }, 1000)
            self.$refs.sliderBtn.style.backgroundPosition = '0 -84px'
          }
          self.moveStart = ''
        },
        /* 绑定滑块移动与滑动结束，移动过程中鼠标可在绑定的区域 */
        addMouseMoveListener () {
          let self = this
          document.addEventListener('mousemove', self.moving)
          document.addEventListener('touchmove', self.moving)
          document.addEventListener('mouseup', self.moveEnd)
          document.addEventListener('touchend', self.moveEnd)
        }
    
      },
      mounted () {
        let self = this
        this.dataWidth = this.$refs.puzzle.clientWidth*0.884
        this.dataHeight = this.dataWidth*(this.height/this.width)
        this.scale = this.$refs.puzzle.clientWidth/260
        this.puzzleSize = this.dataWidth*(this.PlSize/this.width)
        setTimeout(self.refreshImg,0)
      },
      created () {
        let imgRandomNum = this.RandomNum(0, this.puzzleImgList.length - 1)
        this.imgRandom = this.puzzleImgList[imgRandomNum]
        this.puzzleSize = Number(this.PlSize)
        this.deviation = Number(this.Deviation)
        
        // this.dataWidth = this.width
        // this.dataHeight = this.height
        // this.scale = this.width/260
      },
      watch: {
      },
      beforeDestroy() {
        this.isleavePage = true
      }
    }
    </script>
    
    <style scoped>
    .slider-btn {
      position: absolute;
      width: 90px;
      height: 67px;
      left: 0;
      top: -7px;
      z-index: 12;
      cursor: pointer;
      background-position: 0 -84px;
      transition: inherit;
      background-color: #f4f7fe;
      border-radius: 45%;
      display: flex;
    }
    .slider-center-zzz {
      text-align: center;
      line-height: 67px;
      position: absolute;
      color: #53C300;
      height: 40px;
      width: 100%;
    }
    .ver-tips {
      position: absolute;
      left: 0;
      bottom: -22px;
      background: rgba(255, 255, 255, 0.9);
      height: 22px;
      line-height: 22px;
      font-size: 12px;
      width: 100%;
      margin: 0;
      text-align: left;
      padding: 0 8px;
      transition: all 0.4s;
    }
    .slider-tips {
      bottom: 0;
    }
    .ver-tips i {
      display: inline-block;
      width: 22px;
      height: 22px;
      vertical-align: top;
      background-position: -4px -1229px;
    }
    .ver-tips span {
      display: inline-block;
      vertical-align: top;
      line-height: 22px;
      color: #455;
    }
    .active-tips {
      display: block;
    }
    .hidden {
      display: none;
    }
    .re-btn {
      position: absolute;
      left: 0;
      bottom: 0;
      height: 28px;
      padding: 0 16px;
    }
    .re-btn a {
      display: inline-block;
      width: 14px;
      height: 14px;
      margin: 0px 0;
      background-position: 0 -1179px;
      cursor: pointer;
    }
    .re-btn a:hover {
      background-position: 0 -1193px;
    }
    
    .puzzle-container {
      position: relative;
      /* padding: 16px 16px 28px; */
      /* border: 1px solid #ddd; */
      background: #e0e1e3;
      /* border-radius: 16px; */
    
      /* height: 83px;  */
      /* width: 340px; */
    }
    .slider-container {
      position: relative;
      margin: auto;
    }
    .slider-bar {
      border: 1px solid #c3c3c3;
      border-radius: 24px;
      background: #e0e1e3;
      box-shadow: 0 1px 1px rgba(12, 10, 10, 0.2) inset;
    }
    .slider-bar-text {
      font-size: 12px;
      color: #486c80;
      line-height: 28px;
      margin: 0;
      text-align: right;
      padding-right: 22px;
    }
    
    #puzzle-box {
      position: absolute;
      left: 0;
      top: 0;
      z-index: 22;
    }
    #puzzle-shadow {
      position: absolute;
      left: 0;
      top: 0;
      z-index: 22;
    }
    #puzzle-lost {
      position: absolute;
      left: 0;
      top: 0;
      z-index: 33;
    }
    .puzzle-lost-box {
      position: absolute;
      width: 260px;
      height: 116px;
      left: 0;
      top: 0;
      z-index: 111;
    }
    </style>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODM3Mzg3NQ_size_16_color_FFFFFF_t_70]: /images/20211210/20aad106661e449c9cde658066065081.png