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| <template>
| <div class="scrollbar">
| <div
| ref="wrap"
| :class="[wrapClass, 'scrollbar__wrap', native ? '' : 'scrollbar__wrap--hidden-default']"
| :style="style"
| @scroll="handleScroll"
| >
| <component :is="tag" ref="resize" :class="['scrollbar__view', viewClass]" :style="viewStyle">
| <slot></slot>
| </component>
| </div>
| <template v-if="!native">
| <bar :move="moveX" :size="sizeWidth" />
| <bar vertical :move="moveY" :size="sizeHeight" />
| </template>
| </div>
| </template>
| <script lang="ts">
| import { addResizeListener, removeResizeListener } from '/@/utils/event/resizeEvent';
|
| import { toObject } from './util';
| import {
| defineComponent,
| ref,
| onMounted,
| onBeforeUnmount,
| nextTick,
| provide,
| computed,
| } from 'vue';
| import Bar from './bar';
|
| export default defineComponent({
| name: 'Scrollbar',
| components: { Bar },
| props: {
| native: {
| type: Boolean,
| default: false,
| },
| wrapStyle: {
| type: [String, Array],
| default: '',
| },
| wrapClass: {
| type: [String, Array],
| default: '',
| },
| viewClass: {
| type: [String, Array],
| default: '',
| },
| viewStyle: {
| type: [String, Array],
| default: '',
| },
| noresize: Boolean, // 如果 container 尺寸不会发生变化，最好设置它可以优化性能
| tag: {
| type: String,
| default: 'div',
| },
| },
| setup(props) {
| const sizeWidth = ref('0');
| const sizeHeight = ref('0');
| const moveX = ref(0);
| const moveY = ref(0);
| const wrap = ref<any>(null);
| const resize = ref<any>(null);
|
| provide('scroll-bar-wrap', wrap);
|
| const handleScroll = () => {
| if (!props.native) {
| moveY.value = (wrap.value.scrollTop * 100) / wrap.value.clientHeight;
| moveX.value = (wrap.value.scrollLeft * 100) / wrap.value.clientWidth;
| }
| };
|
| const update = () => {
| if (!wrap.value) return;
|
| const heightPercentage = (wrap.value.clientHeight * 100) / wrap.value.scrollHeight;
| const widthPercentage = (wrap.value.clientWidth * 100) / wrap.value.scrollWidth;
|
| sizeHeight.value = heightPercentage < 100 ? heightPercentage + '%' : '';
| sizeWidth.value = widthPercentage < 100 ? widthPercentage + '%' : '';
| };
|
| onMounted(() => {
| if (props.native) return;
| nextTick(update);
| !props.noresize && addResizeListener(resize.value, update);
| });
|
| onBeforeUnmount(() => {
| if (props.native) return;
| !props.noresize && removeResizeListener(resize.value, update);
| });
| const style = computed(() => {
| let style: any = props.wrapStyle;
| if (Array.isArray(props.wrapStyle)) {
| style = toObject(props.wrapStyle);
| }
| return style;
| });
| return {
| moveX,
| moveY,
| sizeWidth,
| sizeHeight,
| style,
| wrap,
| resize,
| update,
| handleScroll,
| };
| },
| });
| </script>
| <style lang="less">
| .scrollbar {
| position: relative;
| height: 100%;
| overflow: hidden;
|
| &__wrap {
| height: 100%;
| overflow: scroll;
|
| &--hidden-default {
| scrollbar-width: none;
|
| &::-webkit-scrollbar {
| display: none;
| width: 0;
| height: 0;
| opacity: 0;
| }
| }
| }
|
| &__thumb {
| position: relative;
| display: block;
| width: 0;
| height: 0;
| cursor: pointer;
| background-color: rgba(144, 147, 153, 0.3);
| border-radius: inherit;
| transition: 0.3s background-color;
|
| &:hover {
| background-color: rgba(144, 147, 153, 0.5);
| }
| }
|
| &__bar {
| position: absolute;
| right: 2px;
| bottom: 2px;
| z-index: 1;
| border-radius: 4px;
| opacity: 0;
| -webkit-transition: opacity 80ms ease;
| transition: opacity 80ms ease;
|
| &.is-vertical {
| top: 2px;
| width: 6px;
|
| & > div {
| width: 100%;
| }
| }
|
| &.is-horizontal {
| left: 2px;
| height: 6px;
|
| & > div {
| height: 100%;
| }
| }
| }
| }
|
| .scrollbar:active > .scrollbar__bar,
| .scrollbar:focus > .scrollbar__bar,
| .scrollbar:hover > .scrollbar__bar {
| opacity: 1;
| transition: opacity 340ms ease-out;
| }
| </style>
|
|
