admin-fe/src/components/ScrollBar/index.vue
2017-11-27 10:46:08 +08:00

56 lines
1.3 KiB
Vue

<template>
<div class="scroll-container" ref="scrollContainer" @mousewheel="handleScroll">
<div class="scroll-wrapper" ref="scrollWrapper" :style="{top: top + 'px'}">
<slot></slot>
</div>
</div>
</template>
<script>
const delta = 15
export default {
name: 'scrollBar',
data() {
return {
top: 0
}
},
methods: {
handleScroll(e) {
e.preventDefault()
const $container = this.$refs.scrollContainer
const $containerHeight = $container.offsetHeight
const $wrapper = this.$refs.scrollWrapper
const $wrapperHeight = $wrapper.offsetHeight
if (e.wheelDelta > 0) {
this.top = Math.min(0, this.top + e.wheelDelta)
} else {
if ($containerHeight - delta < $wrapperHeight) {
if (this.top < -($wrapperHeight - $containerHeight + delta)) {
this.top = this.top
} else {
this.top = Math.max(this.top + e.wheelDelta, $containerHeight - $wrapperHeight - delta)
}
} else {
this.top = 0
}
}
}
}
}
</script>
<style rel="stylesheet/scss" lang="scss" scoped>
@import '../../styles/variables.scss';
.scroll-container {
position: relative;
width: 100%;
height: 100%;
background-color: $menuBg;
.scroll-wrapper {
position: absolute;
width: 100%!important;
}
}
</style>