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<template>
<div class="scroll-container" ref="scrollContainer" @wheel.prevent="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) {
const eventDelta = e.wheelDelta || -e.deltaY * 3;
const $container = this.$refs.scrollContainer;
const $containerHeight = $container.offsetHeight;
const $wrapper = this.$refs.scrollWrapper;
const $wrapperHeight = $wrapper.offsetHeight;
if (eventDelta > 0) {
this.top = Math.min(0, this.top + eventDelta);
} else {
if ($containerHeight - delta < $wrapperHeight) {
if (this.top < -($wrapperHeight - $containerHeight + delta)) {
this.top = this.top;
} else {
this.top = Math.max(
this.top + eventDelta,
$containerHeight - $wrapperHeight - delta
);
}
} else {
this.top = 0;
}
}
},
},
};
</script>
<style rel="stylesheet/scss" lang="scss" scoped>
@import '../../assets/styles/variables.scss';
.scroll-container {
position: relative;
width: 100%;
height: 100%;
background-color: $menuBg;
.scroll-wrapper {
position: absolute;
width: 100% !important;
}
}
</style>