LeagueStats/client/src/components/Ripple.vue

<template>
  <div
    ref="container"
    @mousedown="addRipple"
    class="relative overflow-hidden cursor-pointer"
    style="z-index: 1;"
  >
    <transition-group
      class="absolute top-0 left-0 w-full h-full pointer-events-none"
      style="z-index: -1;"
      name="grow"
      tag="div"
    >
      <div
        v-for="ripple in ripples"
        :key="ripple.id"
        class="absolute w-full h-full opacity-0 rounded-full pointer-events-none"
        :style="{
          top: ripple.top,
          left: ripple.left,
          width: ripple.width,
          height: ripple.height,
          background: color
        }"
      ></div>
    </transition-group>
    <slot></slot>
  </div>
</template>

<script>
export default {
  props: {
    color: {
      type: String,
      default: 'rgba(255, 255, 255, 0.3)'
    }
  },

  data() {
    return {
      ripples: [],
      rippleWidth: 0,
      halfRippleWidth: 0,
    }
  },

  mounted() {
    const width = this.$refs.container.offsetWidth
    const height = this.$refs.container.offsetHeight
    this.rippleWidth = width > height ? width : height
    this.halfRippleWidth = this.rippleWidth / 2

    window.addEventListener('mouseup', this.purgeRipples)
  },

  beforeDestroy() {
    window.removeEventListener('mouseup', this.purgeRipples)
  },

  methods: {
    addRipple(e) {
      const { left, top } = this.$refs.container.getBoundingClientRect()
      const rippleId = Date.now()
      this.ripples.push({
        width: `${this.rippleWidth}px`,
        height: `${this.rippleWidth}px`,
        left: `${e.clientX - left - this.halfRippleWidth}px`,
        top: `${e.clientY - top - this.halfRippleWidth}px`,
        id: rippleId
      })
    },
    purgeRipples() {
      this.ripples = []
    }
  }
}
</script>

<style>
.grow-enter-active,
.grow-enter-to-active {
  transition: all 1500ms ease-out;
}

.grow-leave-active,
.grow-leave-to-active {
  transition: all 700ms ease-out;
}

.grow-enter {
  transform: scale(0);
  opacity: 1;
}

.grow-enter-to {
  transform: scale(4);
  opacity: 1;
}

.grow-leave {
  transform: scale(4);
  opacity: 1;
}

.grow-leave-to {
  transform: scale(4);
  opacity: 0;
}
</style>