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+<template>
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+ <view class="range-slider" :style="'width:' + width + 'rpx;height:' + height + 'rpx'">
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+ <view class="range-bar" :style="'width:100%;height:' + barHeight + 'rpx'">
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+ <view class="range-bar-bg" :style="'background-color:' + backgroundColor + ''"></view>
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+ <view class="range-bar-progress" :style="'margin-left:' + progressBarLeft + 'rpx;width:' + progressBarWidth + 'rpx;background-color:' + activeColor + ''"></view>
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+ </view>
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+
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+ <view
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+ class="block"
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+ :class="{ active: isMinActive }"
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+ :style="'width:' + blockSize + 'rpx;height:' + blockSize + 'rpx;margin-left:' + minBlockLeft + 'rpx;'"
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+ @touchstart="_onBlockTouchStart"
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+ @touchmove.stop="_onBlockTouchMove"
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+ @touchend="_onBlockTouchEnd"
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+ :data-left="minBlockLeft"
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+ data-tag="minBlock"
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+ >
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+ <slot name="minBlock"></slot>
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+ </view>
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+ <view
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+ class="block"
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+ :class="{ active: isMaxActive }"
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+ :style="'width:' + blockSize + 'rpx;height:' + blockSize + 'rpx;margin-left:' + maxBlockLeft + 'rpx;'"
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+ @touchstart="_onBlockTouchStart"
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+ @touchmove.stop="_onBlockTouchMove"
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+ @touchend="_onBlockTouchEnd"
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+ :data-left="maxBlockLeft"
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+ data-tag="maxBlock"
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+ >
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+ <slot name="maxBlock"></slot>
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+ </view>
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+ </view>
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+</template>
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+<script>
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+/**
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+ * range-slider v1.0.6
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+ */
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+const _windowWidth = uni.getSystemInfoSync().windowWidth;
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+
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+export default {
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+ data() {
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+ return {
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+ isMinActive: false,
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+ isMaxActive: false,
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+
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+ //#ifdef H5
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+ MAX_LENGTH: 294,
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+ maxBlockLeft: 300,
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+ //#endif
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+
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+ // #ifndef H5
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+ MAX_LENGTH: 700,
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+ maxBlockLeft: 350,
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+ // #endif
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+
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+ minBlockLeft: 0,
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+ progressBarLeft: 0,
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+ progressBarWidth: 350,
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+
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+ originalMinValue: 0,
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+ originalMaxValue: 0
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+ };
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+ },
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+ components: {},
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+ props: {
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+ //组件宽度
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+ width: {
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+ type: Number,
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+ default: 750
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+ },
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+ //组件高度
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+ height: {
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+ type: Number,
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+ default: 100
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+ },
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+ //滑块大小
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+ blockSize: {
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+ type: Number,
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+ default: 50
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+ },
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+ //区间进度条高度
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+ barHeight: {
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+ type: Number,
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+ default: 5
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+ },
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+ //背景条颜色
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+ backgroundColor: {
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+ type: String,
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+ default: '#e9e9e9'
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+ },
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+ //已选择的颜色
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+ activeColor: {
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+ type: String,
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+ default: '#1aad19'
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+ },
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+ //最小值
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+ min: {
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+ type: Number,
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+ default: 0
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+ },
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+ //最大值
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+ max: {
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+ type: Number,
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+ default: 100
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+ },
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+ //设置初始值
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+ values: {
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+ type: Array,
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+ default: function() {
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+ return [0, 100];
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+ }
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+ },
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+ //步长值
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+ step: {
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+ type: Number,
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+ default: 1
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+ },
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+ //live模式,是否动态更新
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+ liveMode: {
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+ type: Boolean,
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+ default: true
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+ }
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+ },
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+ created: function() {
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+ //使用自定义组件编译模式时,支持生命周期为:created
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+ this._refresh();
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+ },
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+ onLoad: function(option) {
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+ //不使用自定义组件编译模式时,支持生命周期为:onload
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+ this._refresh();
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+ },
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+ onUnload: function() {},
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+ watch: {
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+ //组件宽度
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+ width: function(newVal, oldVal, changedPath) {
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+ var that = this;
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+ if (newVal != that.width) {
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+ this._refresh();
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+ }
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+ },
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+ //滑块大小
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+ blockSize: function(newVal, oldVal, changedPath) {
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+ var that = this;
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+ if (newVal != that.blockSize) {
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+ this._refresh();
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+ }
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+ },
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+ //最小值
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+ min: function(newVal, oldVal, changedPath) {
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+ var that = this;
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+ if (newVal != that.min) {
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+ that._refresh();
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+ }
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+ },
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+ //最大值
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+ max: function(newVal, oldVal, changedPath) {
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+ var that = this;
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+ if (newVal != that.max) {
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+ that._refresh();
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+ }
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+ },
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+ //设置初始值
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+ values: function(newVal, oldVal, changedPath) {
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+ var that = this;
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+ var values = that.values;
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+ console.log('refresh', newVal, oldVal);
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+ if (that._isValuesValid(newVal) && that._isValuesValid(values)) {
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+ if (values[0] != oldVal[0] || values[1] != oldVal[1]) that._refresh();
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+ }
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+ }
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+ },
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+ methods: {
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+ //补0
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+ _pad: function(num, n) {
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+ return Array(n - ('' + num).length + 1).join(0) + num;
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+ },
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+ _pxToRpx: function(px) {
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+ return (750 * px) / _windowWidth;
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+ },
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+ _onBlockTouchStart: function(e) {
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+ let tag = e.target.dataset.tag;
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+ if (tag == 'minBlock' || tag == 'maxBlock') {
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+ this.isMinActive = tag == 'minBlock';
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+ this.isMaxActive = tag == 'maxBlock';
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+
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+ //兼容h5平台及某版本微信
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+ if (e.hasOwnProperty('changedTouches')) {
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+ this._blockDownX = e.changedTouches[0].pageX;
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+ } else {
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+ this._blockDownX = e.pageX;
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+ }
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+
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+ //#ifdef H5
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+ this._blockLeft = parseFloat(e.target.dataset.left);
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+ //#endif
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+ // #ifndef H5
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+ this._blockLeft = e.target.dataset.left;
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+ // #endif
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+
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+ this._curBlock = e.target.dataset.tag;
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+ }
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+ },
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+ _onBlockTouchMove: function(e) {
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+ let tag = e.target.dataset.tag;
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+ if (tag == 'minBlock' || tag == 'maxBlock') {
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+ var that = this;
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+ var values = that._calculateValues(e);
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+ that._refreshProgressBar(values[2], values[3]);
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+ that._refreshBlock(values[2], values[3]);
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+ //拖动时也触发事件
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+ var eventDetail = {
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+ minValue: this.formatNumber(values[0], this.step),
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+ maxValue: this.formatNumber(values[1], this.step),
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+ fromUser: true,
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+ originalValue: {
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+ minValue: values[0],
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+ maxValue: values[1]
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+ }
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+ };
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+
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+ this.originalMinValue = values[0];
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+ this.originalMaxValue = values[1];
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+ var eventOption = {};
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+ //
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+ if (this.liveMode) that.$emit('rangechange', eventDetail, eventOption);
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+ }
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+ },
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+ _onBlockTouchEnd: function(e) {
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+ let tag = e.target.dataset.tag;
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+ this.isMinActive = false;
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+ this.isMaxActive = false;
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+ if (tag == 'minBlock' || tag == 'maxBlock') {
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+ var that = this;
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+ var values = that._calculateValues(e.mp.changedTouches[0]);
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+ that._refreshProgressBar(values[2], values[3]);
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+ that._refreshBlock(values[2], values[3]);
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+ var eventDetail = {
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+ minValue: this.formatNumber(values[0], this.step),
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+ maxValue: this.formatNumber(values[1], this.step),
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+ fromUser: true,
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+ originalValue: {
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+ minValue: values[0],
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+ maxValue: values[1]
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+ }
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+ };
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+ this.originalMinValue = values[0];
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+ this.originalMaxValue = values[1];
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+ var eventOption = {};
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+ that.$emit('rangechange', eventDetail, eventOption);
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+ }
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+ },
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+ _isValuesValid: function(values) {
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+ return values != null && values != undefined && values.length == 2;
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+ },
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+ /**
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+ * 根据手势计算相关数据
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+ */
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+ _calculateValues: function(e) {
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+ var pageX = e.pageX;
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+ //兼容h5平台
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+ if (e.hasOwnProperty('changedTouches')) {
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+ pageX = e.changedTouches[0].pageX;
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+ }
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+
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+ var that = this;
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+ var moveLength = pageX - that._blockDownX;
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+ var left = that._blockLeft + that._pxToRpx(moveLength);
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+ left = Math.max(0, left);
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+ left = Math.min(left, that.MAX_LENGTH);
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+ var minBlockLeft = that.minBlockLeft;
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+ var maxBlockLeft = that.maxBlockLeft;
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+ if (that._curBlock == 'minBlock') {
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+ minBlockLeft = left;
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+ } else {
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+ maxBlockLeft = left;
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+ }
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+ var range = that.max - that.min;
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+ var minLeft = Math.min(minBlockLeft, maxBlockLeft);
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+ var maxLeft = Math.max(minBlockLeft, maxBlockLeft);
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+ var minValue = (minLeft / that.MAX_LENGTH) * range + that.min;
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+ var maxValue = (maxLeft / that.MAX_LENGTH) * range + that.min;
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+ return [minValue, maxValue, minLeft, maxLeft];
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+ },
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+ /**
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+ * 计算滑块坐标
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+ */
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+ _calculateBlockLeft: function(minValue, maxValue) {
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+ var that = this;
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+ var blockSize = that.blockSize;
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+ var range = that.max - that.min;
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+ var minLeft = ((minValue - that.min) / range) * that.MAX_LENGTH;
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+ var maxLeft = ((maxValue - that.min) / range) * that.MAX_LENGTH;
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+ return [minLeft, maxLeft];
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+ },
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+ /**
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+ * 刷新进度条视图
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+ */
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+ _refreshProgressBar: function(minBlockLeft, maxBlockLeft) {
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+ var that = this;
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+ var blockSize = that.blockSize;
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+ that.progressBarLeft = minBlockLeft + blockSize / 2;
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+ that.progressBarWidth = Math.abs(maxBlockLeft - minBlockLeft);
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+ },
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+ /**
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+ * 刷新滑块视图
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+ */
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+ _refreshBlock: function(minBlockLeft, maxBlockLeft) {
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+ var that = this;
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+ that.minBlockLeft = minBlockLeft;
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+ that.maxBlockLeft = maxBlockLeft;
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+ },
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+ /**
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+ * 刷新整个视图
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+ */
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+ _refresh: function() {
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+ var that = this;
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+ var MAX_LENGTH = that.width - that.blockSize;
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+ that.MAX_LENGTH = MAX_LENGTH;
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+ that.maxBlockLeft = MAX_LENGTH;
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+ that.progressBarWidth = MAX_LENGTH;
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+ var values = that.values;
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+ if (this.originalMinValue && this.originalMinValue) {
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+ values = [this.originalMinValue || values[0], this.originalMaxValue || values[1]];
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+ }
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+
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+ if (that._isValuesValid(values)) {
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+ values[0] = Math.max(that.min, values[0]);
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+ values[0] = Math.min(values[0], that.max);
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+ values[1] = Math.max(that.min, values[1]);
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+ values[1] = Math.min(values[1], that.max);
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+ var leftValues = that._calculateBlockLeft(values[0], values[1]);
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+ that._refreshProgressBar(leftValues[0], leftValues[1]);
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+ that._refreshBlock(leftValues[0], leftValues[1]);
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+ }
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+ },
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+ formatNumber(num, step) {
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+ //格式化数字,保留几位小数
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+ let stepStr = '' + step;
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+ let index = stepStr.indexOf('.');
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+ let len = index > -1 ? stepStr.length - index - 1 : 0;
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+ let offestNum = parseInt(1 + Array(('' + len).length + 1).join(0)) * 0.1;
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+ let tmpNum = num * offestNum;
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+ return ((parseInt(tmpNum / step + (step > 1 ? 1 : step) * 0.5) * step) / offestNum).toFixed(len);
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+ }
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+ }
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+};
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+</script>
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+
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+<style>
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+.range-slider {
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+ position: relative;
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+}
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+
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+.range-bar {
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+ position: absolute;
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+}
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+
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+.range-bar {
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+ position: absolute;
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+ top: 50%;
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+ transform: translate(0, -50%);
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+ border-radius: 10000rpx;
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+}
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+
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+.range-bar-bg {
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+ position: absolute;
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+ width: 100%;
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+ height: 100%;
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+ border-radius: 10000rpx;
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+}
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+
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+.range-bar-progress {
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+ position: absolute;
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+ width: 100%;
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+ height: 100%;
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+ background-color: blueviolet;
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+}
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+
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+.block {
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+ position: absolute;
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+ top: 50%;
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+ transform: translate(0, -50%);
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+ background: #fff;
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+ border-radius: 50%;
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+ box-shadow: 0rpx 0rpx 6rpx #ccc;
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+}
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+
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+.block.active {
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+ transform: translate(0, -50%) scale(1.5);
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+}
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+</style>
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