refine:refine directive waves

src/directive/waves/index.js

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+import waves from './waves'
+
+const install = function(Vue) {
+  Vue.directive('waves', waves)
+}
+
+if (window.Vue) {
+  window.waves = waves
+  Vue.use(install); // eslint-disable-line
+}
+
+waves.install = install
+export default waves

src/directive/waves/waves.css

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+.waves-ripple {
+    position: absolute;
+    border-radius: 100%;
+    background-color: rgba(0, 0, 0, 0.15);
+    background-clip: padding-box;
+    pointer-events: none;
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    -webkit-transform: scale(0);
+    -ms-transform: scale(0);
+    transform: scale(0);
+    opacity: 1;
+}
+
+.waves-ripple.z-active {
+    opacity: 0;
+    -webkit-transform: scale(2);
+    -ms-transform: scale(2);
+    transform: scale(2);
+    -webkit-transition: opacity 1.2s ease-out, -webkit-transform 0.6s ease-out;
+    transition: opacity 1.2s ease-out, -webkit-transform 0.6s ease-out;
+    transition: opacity 1.2s ease-out, transform 0.6s ease-out;
+    transition: opacity 1.2s ease-out, transform 0.6s ease-out, -webkit-transform 0.6s ease-out;
+}

src/directive/waves/waves.js

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+import './waves.css'
+
+export default{
+  bind(el, binding) {
+    el.addEventListener('click', e => {
+      const customOpts = Object.assign({}, binding.value)
+      const opts = Object.assign({
+        ele: el, // 波纹作用元素
+        type: 'hit', // hit点击位置扩散center中心点扩展
+        color: 'rgba(0, 0, 0, 0.15)' // 波纹颜色
+      }, customOpts)
+      const target = opts.ele
+      if (target) {
+        target.style.position = 'relative'
+        target.style.overflow = 'hidden'
+        const rect = target.getBoundingClientRect()
+        let ripple = target.querySelector('.waves-ripple')
+        if (!ripple) {
+          ripple = document.createElement('span')
+          ripple.className = 'waves-ripple'
+          ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px'
+          target.appendChild(ripple)
+        } else {
+          ripple.className = 'waves-ripple'
+        }
+        switch (opts.type) {
+          case 'center':
+            ripple.style.top = (rect.height / 2 - ripple.offsetHeight / 2) + 'px'
+            ripple.style.left = (rect.width / 2 - ripple.offsetWidth / 2) + 'px'
+            break
+          default:
+            ripple.style.top = (e.pageY - rect.top - ripple.offsetHeight / 2 - document.body.scrollTop) + 'px'
+            ripple.style.left = (e.pageX - rect.left - ripple.offsetWidth / 2 - document.body.scrollLeft) + 'px'
+        }
+        ripple.style.backgroundColor = opts.color
+        ripple.className = 'waves-ripple z-active'
+        return false
+      }
+    }, false)
+  }
+}
+