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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.documentElement.scrollTop || document.body.scrollTop) + 'px'
ripple.style.left = (e.pageX - rect.left - ripple.offsetWidth / 2 - document.documentElement.scrollLeft || document.body.scrollLeft) + 'px'
}
ripple.style.backgroundColor = opts.color
ripple.className = 'waves-ripple z-active'
return false
}
}, false)
}
}