add border box 7

src/components/borderBox7/index.vue

@@ -0,0 +1,80 @@
+<template>
+  <div class="border-box-7" :ref="ref">
+    <svg class="svg-container">
+      <polyline class="line-width-2" :points="`0, 25 0, 0 25, 0`" />
+      <polyline class="line-width-2" :points="`${width - 25}, 0 ${width}, 0 ${width}, 25`" />
+      <polyline class="line-width-2" :points="`${width - 25}, ${height} ${width}, ${height} ${width}, ${height - 25}`" />
+      <polyline class="line-width-2" :points="`0, ${height - 25} 0, ${height} 25, ${height}`" />
+
+      <polyline class="line-width-5" :points="`0, 10 0, 0 10, 0`" />
+      <polyline class="line-width-5" :points="`${width - 10}, 0 ${width}, 0 ${width}, 10`" />
+      <polyline class="line-width-5" :points="`${width - 10}, ${height} ${width}, ${height} ${width}, ${height - 10}`" />
+      <polyline class="line-width-5" :points="`0, ${height - 10} 0, ${height} 10, ${height}`" />
+    </svg>
+
+    <slot></slot>
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'BorderBox7',
+  data () {
+    return {
+      ref: `border-box-7-${(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">
+@color: fade(gray, 30);
+
+.border-box-7 {
+  position: relative;
+  box-shadow: inset 0 0 40px fade(@color, 30);
+  box-sizing: border-box;
+  border: 1px solid @color;
+  padding: 10px;
+
+  .svg-container {
+    position: absolute;
+    top: 0px;
+    left: 0px;
+    width: 100%;
+    height: 100%;
+
+    polyline {
+      fill: none;
+      stroke-linecap: round;
+    }
+  }
+
+  .line-width-2 {
+    stroke: @color;
+    stroke-width: 2;
+  }
+
+  .line-width-5 {
+    stroke: fade(gray, 50);
+    stroke-width: 5;
+  }
+}
+</style>