water marker

index.html

<div id="app">
  <div class="water-marker" >
    <div v-watermarker="{text:'lorem ipsum',textColor:'rgba(180, 180, 180, 0.4)'}">
      <div class="water-marker-item">lorem ipsum</div>
    </div>
  </div>
</div>

script.js

function addWaterMarker(str, parentNode, font, textColor) {
  // Watermark text, parent element, font, text color
  var can = document.createElement('canvas')
  parentNode.appendChild(can)
  can.width = 200
  can.height = 150
  can.style.display ='none'
  var cans = can.getContext('2d')
  cans.rotate((-20 * Math.PI) / 180)
  cans.font = font || '16px Microsoft JhengHei'
  cans.fillStyle = textColor ||'rgba(180, 180, 180, 0.3)'
  cans.textAlign ='left'
  cans.textBaseline ='Middle'
  cans.fillText(str, can.width / 10, can.height / 2)
  parentNode.style.backgroundImage ='url(' + can.toDataURL('image/png') +')'
}

const waterMarker = {
  bind: function (el, binding) {
    addWaterMarker(binding.value.text, el, binding.value.font, binding.value.textColor)
  },
}

new Vue({
  directives: {
    'watermarker':waterMarker
  },
  data(){
    return{
    }
  },
  methods:{
  }
}).$mount('#app')

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.11/vue.js"></script>

style.scss

.water-marker{
  height: 300px;
  .water-marker-item{
    line-height: 100vh;
  }
}

water-marker.markdown

water marker

A Pen by Edward Lance Lorilla on CodePen.

License.