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