✨ feat(组件): 新增图片滑块验证组件

+<template>
+  <!-- 滑块验证功能 -->
+  <div class="sliderModel" v-if="visible">
+    <div class="cont">
+      <div class="title">滑块验证</div>
+      <div class="slider-refresh">
+        <span @click="handleRefresh">刷新</span>
+        <span @click="handleClose">关闭</span>
+      </div>
+      <!-- canvas 图片 -->
+      <div class="imgWrap">
+        <canvas ref="sliderBlock" class="slider-block"></canvas>
+        <canvas ref="codeImg" class="code-img"></canvas>
+      </div>
+      <!-- 滑块 -->
+      <div class="sliderBox">
+        <div class="sliderF">
+          <div class="sliderS" @touchstart.prevent="handleTouch">
+            <div class="btn">&gt;&gt;</div>
+          </div>
+        </div>
+        <div class="bgC">
+          {{ tips }}
+          <div class="bgC_left"></div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import img1 from './images/1.jpg'
+import img2 from './images/2.jpg'
+import img3 from './images/3.jpg'
+import img4 from './images/4.jpg'
+import img5 from './images/5.jpg'
+import img6 from './images/6.jpg'
+
+export default {
+  props: {
+    isShow: {
+      type: Boolean,
+      default: false
+    },
+    options: {
+      // 传入的参数不影响组件
+      type: Object,
+      default: () => ({})
+    },
+    imgList: { // 背景图片
+      type: Array,
+      default: () => {
+        return [img1, img2, img3, img4, img5, img6]
+      }
+    }
+  },
+  data() {
+    return {
+      // 滑块x轴数据
+      slider: {
+        mx: 0,
+        bx: 0
+      },
+      tips: '',
+      visible: false,
+      mainDom: '',
+      blockDom: ''
+    }
+  },
+  watch: {
+    isShow: {
+      handler(newVal) {
+        this.visible = newVal
+        if (newVal === true) {
+          this.tips = '拖动左边滑块完成上方拼图'
+          this.$nextTick(() => {
+            this.getDom()
+            this.canvasInit()
+          })
+        }
+      },
+      immediate: true
+    }
+  },
+
+  methods: {
+    // 获取 dom
+    getDom() {
+      this.mainDom = this.$refs.codeImg
+      this.blockDom = this.$refs.sliderBlock
+    },
+
+    handleClose() {
+      this.$emit('on-close', false)
+    },
+
+    // 刷新
+    handleRefresh() {
+      this.canvasInit()
+    },
+
+    // 移动端事件
+    handleTouch(e) {
+      const ev = e || window.event
+      const dom = ev.target // dom元素
+
+      const downCoordinate = {
+        x: ev.touches[0].pageX,
+        y: ev.touches[0].pageY
+      }
+      // 正确的滑块数据
+      const checkx = Number(this.slider.mx) - 0
+      // x轴数据
+      let x = 0
+      const move = (moveEV) => {
+        x = moveEV.touches[0].pageX - downCoordinate.x
+        // //y = moveEV.y - downCoordinate.y;
+        if (x >= 251 || x <= 0) return false
+        dom.style.left = x + 'px'
+        // dom.style.top = y + "px";
+        this.blockDom.style.left = x + 'px'
+      }
+
+      const up = () => {
+        document.removeEventListener('touchmove', move)
+        document.removeEventListener('touchend', up)
+        dom.style.left = ''
+
+        // console.log(x, checkx)
+        const max = checkx - 5
+        const min = checkx - 15
+        // 允许正负误差1
+        if ((max >= x && x >= min) || x === checkx) {
+          this.tips = '验证成功'
+          this.$emit('done', this.options.type)
+        } else {
+          this.tips = '验证失败，请重试'
+          this.blockDom.style.left = 0
+          this.canvasInit()
+        }
+      }
+
+      document.addEventListener('touchmove', move)
+      document.addEventListener('touchend', up)
+    },
+
+    // 拼图验证码初始化
+    canvasInit() {
+      // 生成指定区间的随机数
+      const random = (min, max) => {
+        return Math.floor(Math.random() * (max - min + 1) + min)
+      }
+      // x: 254, y: 109
+      const mx = random(127, 230)
+      const bx = random(10, 128)
+      const y = random(10, 99)
+
+      this.slider = { mx, bx }
+
+      this.draw(mx, bx, y)
+    },
+
+    draw(mx = 200, bx = 20, y = 50) {
+      const bg = this.mainDom.getContext('2d')
+      const block = this.blockDom.getContext('2d')
+
+      const width = this.mainDom.width
+      const height = this.mainDom.height
+
+      // 重新赋值，让canvas进行重新绘制
+      this.blockDom.height = height
+      this.mainDom.height = height
+      this.mainDom.width = width
+      // 随机背景图片
+      const randomImg = () => {
+        const num = Math.floor(Math.random() * this.imgList.length)
+        return this.imgList[num]
+      }
+
+      const imgsrc = randomImg()
+      const img = document.createElement('img')
+      img.style.objectFit = 'scale-down'
+      img.src = imgsrc
+      img.onload = () => {
+        bg.drawImage(img, 0, 0, width, height)
+        block.drawImage(img, 0, 0, width, height)
+        const ImageData = block.getImageData(mx, y, width, height)
+        block.putImageData(ImageData, 0, y)
+      }
+
+      const mainxy = { x: mx, y: y, r: 9 }
+      const blockxy = { x: mx, y: y, r: 9 }
+      this.drawBlock(bg, mainxy, 'fill')
+      this.drawBlock(block, blockxy, 'clip')
+    },
+
+    // 绘制拼图
+    drawBlock(ctx, xy = { x: 254, y: 109, r: 9 }, type) {
+      const x = xy.x
+      const y = xy.y
+      const r = xy.r
+      const w = 40
+      const PI = Math.PI
+      // 绘制
+      ctx.beginPath()
+      // left
+      // ctx.moveTo(x, y)
+      // top
+      ctx.arc(x + (w + 5) / 2, y, r, -PI, 0.15, true)
+      ctx.lineTo(x + w + 5, y)
+      // right
+      ctx.arc(x + w + 5, y + w / 2, r, 1.5 * PI, 0.5 * PI, false)
+      ctx.lineTo(x + w + 5, y + w)
+      // bottom
+      ctx.arc(x + (w + 5) / 2, y + w, r, 0, PI, false)
+      ctx.lineTo(x, y + w)
+      ctx.arc(x, y + w / 2, r, 0.5 * PI, 1.5 * PI, true)
+      ctx.lineTo(x, y)
+      // 修饰，没有会看不出效果
+      ctx.lineWidth = 1
+      ctx.fillStyle = 'rgba(255, 255, 255, 0.5)'
+      ctx.strokeStyle = 'rgba(255, 255, 255, 0.5)'
+      ctx.stroke()
+      ctx[type]()
+      ctx.globalCompositeOperation = 'xor'
+    }
+  }
+}
+</script>
+
+<style scoped lang="less">
+.sliderModel {
+  position: fixed;
+  left: 0;
+  top: 0;
+  width: 100%;
+  height: 100%;
+  background: rgba(0, 0, 0, 0.5);
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.title {
+  width: 100%;
+  height: 60px;
+  font-size: 18px;
+  color: #333;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.cont {
+  position: relative;
+  background: #fff;
+  width: 300px;
+  border-radius: 8px;
+  overflow: hidden;
+  padding-bottom: 10px;
+}
+
+.imgWrap {
+  position: relative;
+  width: 280px;
+  height: 150px;
+  margin: 0 auto;
+  overflow: hidden;
+
+  .code-img,
+  .slider-block {
+    border-radius: 8px;
+    height: inherit;
+  }
+
+  .code-img {
+    width: 280px;
+    margin: 0 auto;
+  }
+
+  .slider-block {
+    position: absolute;
+    z-index: 4000;
+    left: 0;
+  }
+}
+
+.slider-refresh {
+  font-size: 14px;
+  position: absolute;
+  top: 20px;
+  right: 20px;
+  cursor: pointer;
+  color: green;
+
+  span {
+    padding: 0 2px;
+  }
+}
+
+.img {
+  display: block;
+  width: 100%;
+  height: 100%;
+}
+
+.sliderOver {
+  position: absolute;
+  left: 0;
+  top: 0;
+  width: 50px;
+  height: 50px;
+  background: #ddd;
+  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.3);
+}
+
+.smartImg {
+  position: absolute;
+  z-index: 2;
+  left: 0;
+  top: 0;
+  width: 50px;
+  height: 50px;
+  overflow: hidden;
+  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
+}
+
+.simg {
+  position: absolute;
+  display: block;
+  width: 280px;
+  height: 150px;
+}
+
+.sliderBox {
+  width: 280px;
+  margin: 15px auto 0;
+  height: 36px;
+  position: relative;
+}
+
+.sliderF {
+  width: 100%;
+  height: 100%;
+  z-index: 3;
+}
+
+.sliderS {
+  cursor: pointer;
+  position: absolute;
+  left: 0;
+  top: 0;
+  z-index: 2;
+  height: 36px;
+  width: 36px;
+  border-radius: 36px;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.icon {
+  width: 20px;
+  height: 20px;
+}
+
+.bgC {
+  position: absolute;
+  z-index: 1;
+  left: 0;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 100%;
+  height: 30px;
+  border-radius: 30px;
+  line-height: 30px;
+  font-size: 14px;
+  color: #999999;
+  box-shadow: inset 0 0 4px #ccc;
+  text-align: center;
+  overflow: hidden;
+}
+
+.bgC_left {
+  position: absolute;
+  left: 0px;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 0;
+  height: 28px;
+  border-top-left-radius: 28px;
+  border-bottom-left-radius: 28px;
+  line-height: 28px;
+  font-size: 14px;
+  background-color: #eee;
+  box-shadow: inset 0 0 4px #ccc;
+  text-align: center;
+}
+
+.showMessage {
+  text-align: center;
+  font-size: 14px;
+  height: 30px;
+  line-height: 30px;
+}
+
+#closeBtn {
+  position: fixed;
+  z-index: 10;
+  bottom: 10px;
+  left: 50%;
+}
+
+.btn {
+  width: 36px;
+  height: 36px;
+  position: absolute;
+  border: 1px solid #ccc;
+  cursor: move;
+  font-family: "宋体";
+  text-align: center;
+  line-height: 36px;
+  background-color: #fff;
+  user-select: none;
+  color: #666;
+  font-size: 16px;
+}
+</style>

+// ts script setup 写法
+<template>
+  <div class="img-verify">
+    <canvas ref="verify" :width="state.width" :height="state.height" @click="handleDraw" />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { reactive, onMounted, ref } from 'vue'
+
+const verify = ref({} as HTMLCanvasElement)
+const state = reactive({
+  pool: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890', // 字符串
+  width: 120,
+  height: 40,
+  imgCode: ''
+})
+onMounted(() => {
+  // 初始化绘制图片验证码
+  state.imgCode = draw()
+})
+
+// 点击图片重新绘制
+const handleDraw = () => {
+  state.imgCode = draw()
+}
+
+// 随机数
+const randomNum = (min: number, max: number) => {
+  return parseInt((Math.random() * (max - min) + min + '') as string)
+}
+// 随机颜色
+const randomColor = (min: number, max: number) => {
+  const r = randomNum(min, max)
+  const g = randomNum(min, max)
+  const b = randomNum(min, max)
+  return `rgb(${r},${g},${b})`
+}
+
+// 绘制图片
+const draw = () => {
+  // 3.填充背景颜色，背景颜色要浅一点
+  const ctx = verify.value.getContext('2d') as any
+  // 填充颜色
+  ctx.fillStyle = randomColor(180, 230)
+  // 填充的位置
+  ctx.fillRect(0, 0, state.width, state.height)
+  // 定义paramText
+  let imgCode = ''
+  // 4.随机产生字符串，并且随机旋转
+  for (let i = 0; i < 4; i++) {
+    // 随机的四个字
+    const text = state.pool[randomNum(0, state.pool.length)]
+    imgCode += text
+    // 随机的字体大小
+    const fontSize = randomNum(18, 40)
+    // 字体随机的旋转角度
+    const deg = randomNum(-30, 30)
+    /*
+     * 绘制文字并让四个文字在不同的位置显示的思路 :
+     * 1、定义字体
+     * 2、定义对齐方式
+     * 3、填充不同的颜色
+     * 4、保存当前的状态（以防止以上的状态受影响）
+     * 5、平移translate()
+     * 6、旋转 rotate()
+     * 7、填充文字
+     * 8、restore出栈
+     * */
+    ctx.font = fontSize + 'px Simhei'
+    ctx.textBaseline = 'top'
+    ctx.fillStyle = randomColor(80, 150)
+    /*
+     * save() 方法把当前状态的一份拷贝压入到一个保存图像状态的栈中。
+     * 这就允许您临时地改变图像状态，
+     * 然后，通过调用 restore() 来恢复以前的值。
+     * save是入栈，restore是出栈。
+     * 用来保存Canvas的状态。save之后，可以调用Canvas的平移、放缩、旋转、错切、裁剪等操作。 restore：用来恢复Canvas之前保存的状态。防止save后对Canvas执行的操作对后续的绘制有影响。
+     *
+     * */
+    ctx.save()
+    ctx.translate(30 * i + 15, 15)
+    ctx.rotate((deg * Math.PI) / 180)
+    // fillText() 方法在画布上绘制填色的文本。文本的默认颜色是黑色。
+    // 请使用 font 属性来定义字体和字号，并使用 fillStyle 属性以另一种颜色/渐变来渲染文本。
+    // context.fillText(text,x,y,maxWidth);
+    ctx.fillText(text, -15 + 5, -15)
+    ctx.restore()
+  }
+  // 5.随机产生5条干扰线,干扰线的颜色要浅一点
+  for (let i = 0; i < 5; i++) {
+    ctx.beginPath()
+    ctx.moveTo(randomNum(0, state.width), randomNum(0, state.height))
+    ctx.lineTo(randomNum(0, state.width), randomNum(0, state.height))
+    ctx.strokeStyle = randomColor(180, 230)
+    ctx.closePath()
+    ctx.stroke()
+  }
+  // 6.随机产生40个干扰的小点
+  for (let i = 0; i < 40; i++) {
+    ctx.beginPath()
+    ctx.arc(randomNum(0, state.width), randomNum(0, state.height), 1, 0, 2 * Math.PI)
+    ctx.closePath()
+    ctx.fillStyle = randomColor(150, 200)
+    ctx.fill()
+  }
+  return imgCode
+}
+
+</script>
+<style type="text/css">
+.img-verify canvas {
+  cursor: pointer;
+}
+</style>

@@ -39,6 +39,14 @@
   </div>
 
   <van-number-keyboard v-model="phone" :show="keyboard_show" :maxlength="11" @blur="onBlur" />
+
+  <!-- 图片滑块验证 -->
+  <image-slider-verify
+    :isShow="sliderShow"
+    @done="handleConfirm"
+    @on-close="handleClose"
+    >
+  </image-slider-verify>
 </template>
 
 <script setup>
@@ -199,11 +207,14 @@ const themeVars = {
 // FIXME: VUE2写法
 import mixin from 'common/mixin';
 
+import ImageSliderVerify from '@/components/ImageSliderVerify/index.vue'
+
 export default {
+  components: { ImageSliderVerify },
   mixins: [mixin.init],
   data() {
     return {
-
+      sliderShow: false
     }
   },
   mounted() {
@@ -223,6 +234,17 @@ export default {
             icon: 'cross',
           });
         })
+    },
+    // 滑块验证成功后回调
+    handleConfirm (val) {
+      this.sliderShow = false
+      console.warn('验证成功');
+    },
+    handleClose () {
+      this.sliderShow = false
+    },
+    imageVerify () {
+      this.sliderShow = true;
     }
   },
 }