add border box 6 & polyline chart

src/components/borderBox6/index.vue

@@ -0,0 +1,84 @@
+<template>
+  <div class="border-box-6" :ref="ref">
+    <svg class="svg-container">
+      <circle cx="5" cy="5" r="2"/>
+      <circle :cx="width - 5" cy="5" r="2" />
+      <circle :cx="width - 5" :cy="height - 5" r="2" />
+      <circle cx="5" :cy="height - 5" r="2" />
+      <polyline :points="`10, 4 ${width - 10}, 4`" />
+      <polyline :points="`10, ${height - 4} ${width - 10}, ${height - 4}`" />
+      <polyline :points="`5, 70 5, ${height - 70}`" />
+      <polyline :points="`${width - 5}, 70 ${width - 5}, ${height - 70}`" />
+      <polyline :points="`3, 10, 3, 50`" />
+      <polyline :points="`7, 30 7, 80`" />
+      <polyline :points="`${width - 3}, 10 ${width - 3}, 50`" />
+      <polyline :points="`${width - 7}, 30 ${width - 7}, 80`" />
+      <polyline :points="`3, ${height - 10} 3, ${height - 50}`" />
+      <polyline :points="`7, ${height - 30} 7, ${height - 80}`" />
+      <polyline :points="`${width - 3}, ${height - 10} ${width - 3}, ${height - 50}`" />
+      <polyline :points="`${width - 7}, ${height - 30} ${width - 7}, ${height - 80}`" />
+    </svg>
+
+    <slot></slot>
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'BorderBox6',
+  data () {
+    return {
+      ref: `border-box-6-${(new Date()).getTime()}`,
+      width: 0,
+      height: 0
+    }
+  },
+  methods: {
+    init () {
+      const { $nextTick, $refs, ref } = this
+
+      $nextTick(e => {
+        this.width = $refs[ref].clientWidth
+        this.height = $refs[ref].clientHeight
+      })
+    }
+  },
+  mounted () {
+    const { init } = this
+
+    init()
+  }
+}
+</script>
+
+<style lang="less">
+@import url('../../assets/style/index.less');
+
+.border-box-6 {
+  position: relative;
+  box-sizing: border-box;
+  padding: 10px;
+
+  .reverse {
+    transform: rotate(180deg);
+  }
+
+  .svg-container {
+    position: absolute;
+    top: 0px;
+    left: 0px;
+    width: 100%;
+    height: 100%;
+
+    circle {
+      fill: gray;
+    }
+
+    polyline {
+      fill: none;
+      stroke-width: 1;
+      stroke: fade(#fff, 35);
+    }
+  }
+}
+</style>