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- <template>
- <view class="cj-slider" @mousemove="onSliMouseMove" @mouseup="onSliMouseUp">
- <!-- <view class="mouse-move" :style="{height: moveHeight + 'rpx'}"></view> -->
- <view class="cj-slider__line" :class="[disabled ? 'cj-slider--disabled' : '']" :style="{
- backgroundColor: inactiveColor,
- height: height + 'rpx'
- }" @click="onClick"></view>
- <view class="cj-slider__gap" :style="[
- barStyle,
- {
- height: height + 'rpx',
- backgroundColor: activeColor
- }
- ]" @click="onClick">
- <view class="cj-slider__button-wrap" @mousedown="onMouseDown(1, $event)" @mousemove="onMouseMove($event)"
- @mouseleave="onMouseLeave(1)" @mouseup="onMouseUp(1)" @touchstart="onTouchStart(1, $event)"
- @touchmove="onTouchMove(1, $event)" @touchend="onTouchEnd(1)" @touchcancel="onTouchEnd">
- <slot v-if="$slots.default || $slots.$default" />
- <view v-else class="cj-slider__button" :style="[blockStyle, {
- height: blockWidth + 'rpx',
- width: blockWidth + 'rpx',
- backgroundColor: blockColor
- }]">
- <!-- <text class="numsize">{{value[0]}}</text> -->
- </view>
- </view>
- <view class="cj-slider__button-wrap2" @mousedown="onMouseDown(2, $event)" @mousemove="onMouseMove($event)"
- @mouseleave="onMouseLeave(2)" @mouseup="onMouseUp(2)" @touchstart="onTouchStart(2, $event)"
- @touchmove="onTouchMove(2, $event)" @touchend="onTouchEnd(2)" @touchcancel="onTouchEnd">
- <slot v-if="$slots.default || $slots.$default" />
- <view v-else class="cj-slider__button" :style="[blockStyle, {
- height: blockWidth + 'rpx',
- width: blockWidth + 'rpx',
- backgroundColor: blockColor
- }]">
- <!-- <text class="numsize">{{value[1]}}</text> -->
- </view>
- </view>
- </view>
- </view>
- </template>
- <script>
- /**
- * slider 滑块选择器
- * @property {Number | String} value 滑块默认值(默认[最小值,最大值])
- * @property {Number | String} min 最小值(默认0)
- * @property {Number | String} max 最大值(默认100)
- * @property {Number | String} step 步长(默认1)
- * @property {Number | String} blockWidth 滑块宽度,高等于宽(30)
- * @property {Number | String} height 滑块条高度,单位rpx(默认6)
- * @property {String} inactiveColor 底部条背景颜色(默认#c0c4cc)
- * @property {String} activeColor 底部选择部分的背景颜色(默认#2979ff)
- * @property {String} blockColor 滑块颜色(默认#ffffff)
- * @property {Object} blockStyle 给滑块自定义样式,对象形式
- * @property {Boolean} disabled 是否禁用滑块(默认为false)
- * @property {Number | String} moveHeight 鼠标离开滑块仍可滑动的区域高度,单位rpx(默认100)
- * @event {Function} start 滑动触发
- * @event {Function} moving 正在滑动中
- * @event {Function} end 滑动结束
- * @example <cj-slider v-model="value" />
- */
- export default {
- name: 'cj-slider',
- props: {
- // 当前进度百分比值
- value: {
- type: Array,
- default(){
- return []
- }
- },
- // 是否禁用滑块
- disabled: {
- type: Boolean,
- default: false
- },
- // 滑块宽度,高等于宽,单位rpx
- blockWidth: {
- type: [Number, String],
- default: 30
- },
- // 最小值
- min: {
- type: [Number, String],
- default: 0
- },
- // 最大值
- max: {
- type: [Number, String],
- default: 100
- },
- // 步进值
- step: {
- type: [Number, String],
- default: 1
- },
- // 滑块条高度,单位rpx
- height: {
- type: [Number, String],
- default: 6
- },
- // 进度条的激活部分颜色
- activeColor: {
- type: String,
- default: '#f17474'
- },
- // 进度条的背景颜色
- inactiveColor: {
- type: String,
- default: '#c0c4cc'
- },
- // 滑块的背景颜色
- blockColor: {
- type: String,
- default: '#ffffff'
- },
- // 用户对滑块的自定义颜色
- blockStyle: {
- type: Object,
- default () {
- return {};
- }
- },
- // 鼠标可离开滑块后仍能滑动的范围高度
- moveHeight: {
- type: [Number, String],
- default: '500'
- }
- },
- data() {
- return {
- mouseLeave: false, // 鼠标移出了滑块
- mouseType: 1, // 1 左滑块 2 右滑块
- mouseDown: false, // 鼠标按下
- startX: 0,
- status: 'end',
- newValue: 0,
- distanceX: 0,
- startValue: 0,
- barStyle: {},
- sliderRect: {
- left: 0,
- width: 0
- }
- };
- },
- created() {
- // 如果不是长度为2的数组,默认值为[最小值, 最大值]
- if (Object.prototype.toString.call(this.value) == '[object Array]' && this.value.length === 2) {
- this.updateValue(this.value[0], this.value[1], false);
- } else {
- this.$emit('input', Array(this.min, this.max))
- }
- },
- mounted() {
- // 获取滑块条的尺寸信息
- this.$uGetRect('.cj-slider').then(rect => {
- this.sliderRect = rect;
- });
- },
- methods: {
- onTouchStart(type, event) {
- if (this.disabled) return;
- this.startX = 0;
- // 触摸点集
- let touches = event.touches[0];
- // 触摸点到屏幕左边的距离
- this.startX = touches.clientX;
- // 此处的this.value虽为props值,但是通过$emit('input')进行了修改
- this.startValue = type === 1 ? this.format(this.value[0]) : this.format(this.value[1]);
- // 标示当前的状态为开始触摸滑动
- this.status = 'start';
- },
- onMouseDown(type, event) {
- if (this.disabled) return;
- this.mouseDown = true;
- this.mouseType = type
- this.startX = event.clientX || 0;
- this.startValue = type === 1 ? this.format(this.value[0]) : this.format(this.value[1]);
- this.status = 'start';
- },
- onTouchMove(type, event) {
- if (this.disabled) return;
- // 连续触摸的过程会一直触发本方法,但只有手指触发且移动了才被认为是拖动了,才发出事件
- // 触摸后第一次移动已经将status设置为moving状态,故触摸第二次移动不会触发本事件
- if (this.status == 'start') this.$emit('start');
- let touches = event.touches[0]
- // 滑块的左边不一定跟屏幕左边接壤,所以需要减去最外层父元素的左边值
- this.distanceX = touches.clientX - this.sliderRect.left
- // 获得移动距离对整个滑块的百分比值,此为带有多位小数的值,不能用此更新视图
- // 否则造成通信阻塞,需要每改变一个step值时修改一次视图
- this.newValue = (this.distanceX / this.sliderRect.width) * (this.max - this.min) + this.min
- this.status = 'moving'
- // 发出moving事件
- this.$emit('moving');
- if (type === 1) {
- this.updateValue(this.newValue, this.format(this.value[1]), true);
- } else {
- this.updateValue(this.format(this.value[0]), this.newValue, true);
- }
- },
- onMouseMove(event) {
- if (!this.mouseDown) return;
- if (this.disabled) return;
- if (this.status == 'start') this.$emit('start');
- // 滑块的左边不一定跟屏幕左边接壤,所以需要减去最外层父元素的左边值
- this.distanceX = event.clientX - this.sliderRect.left
- // 获得移动距离对整个滑块的百分比值,此为带有多位小数的值,不能用此更新视图
- // 否则造成通信阻塞,需要每改变一个step值时修改一次视图
- this.newValue = (this.distanceX / this.sliderRect.width) * (this.max - this.min) + this.min
- this.status = 'moving'
- // 发出moving事件
- this.$emit('moving');
- if (this.mouseType === 1) {
- this.updateValue(this.newValue, this.format(this.value[1]), true);
- } else {
- this.updateValue(this.format(this.value[0]), this.newValue, true);
- }
- },
- onMouseLeave(type) {
- this.mouseLeave = true
- },
- onTouchEnd(type) {
- if (this.disabled) return;
- if (this.status === 'moving') {
- if (type === 1) {
- this.updateValue(this.newValue, this.format(this.value[1]), true);
- } else {
- this.updateValue(this.format(this.value[0]), this.newValue, true);
- }
- this.$emit('end');
- }
- this.status = 'end';
- },
- onMouseUp(type) {
- this.mouseDown = false;
- this.mouseLeave = false;
- if (this.disabled) return;
- if (this.status === 'moving') {
- if (type === 1) {
- this.updateValue(this.newValue, this.format(this.value[1]), true);
- } else {
- this.updateValue(this.format(this.value[0]), this.newValue, true);
- }
- this.$emit('end');
- }
- this.status = 'end';
- },
- onSliMouseUp() {
- // 鼠标在滑块范围内松开
- this.mouseDown = false;
- this.mouseLeave = false;
- },
- onSliMouseMove(e) {
- // 监听整个滑动内的鼠标移动,因为PC端只能监听到小滑块内的移动,移动过快鼠标移出了小滑块则移动失败。
- if (!this.mouseDown) return;
- if (!this.mouseLeave) return;
- this.onMouseMove(e)
- },
- updateValue(value, value2, drag) {
- // 去掉小数部分,同时也是对step步进的处理
- const widthB1 = this.format(value)
- const widthB2 = this.format(value2)
- const widthB1B = Math.round((widthB1 - this.min) * 100 / (this.max - this.min))
- const widthB2B = Math.round((widthB2 - this.min) * 100 / (this.max - this.min))
- // 不允许滑动的值超过max最大值,百分比也不能超过100
- if (widthB1 > widthB2 || widthB2 > this.max || widthB2B > 100) return;
- // 设置移动的百分比值
- let barStyle = {
- width: widthB2B - widthB1B + '%',
- left: widthB1B + '%',
- };
- // 移动期间无需过渡动画
- if (drag == true) {
- barStyle.transition = 'none';
- } else {
- // 非移动期间,删掉对过渡为空的声明,让css中的声明起效
- delete barStyle.transition;
- }
- // 修改value值,这里使用change改变,使用input H5桌面端会卡死,
- this.$emit('input', Array(widthB1, widthB2));
- this.barStyle = barStyle;
- },
- format(value) {
- // 将小数变成整数,为了减少对视图的更新,造成视图层与逻辑层的阻塞
- return Math.round(Math.max(this.min, Math.min(value, this.max)) / this.step) * this.step;
- },
- onClick(event) {
- if (this.disabled) return;
- // 直接点击滑块的情况,计算方式与onTouchMove方法相同
- const widthB1 = this.value[0]
- const widthB2 = this.value[1]
- const value = this.format(((event.detail.x - this.sliderRect.left) / this.sliderRect.width) * (this.max - this
- .min) +
- this.min);
- if (value < widthB1 || (value - widthB1) <= (widthB2 - value)) {
- // 点击位置在左滑块的左边 || 点击位置在中间,且靠近左滑块 => 移动左滑块到该位置
- this.updateValue(value, widthB2, false)
- } else {
- // 点击位置在右滑块的右边 || 点击位置在中间,且靠近右滑块 => 移动右滑块到该位置
- this.updateValue(widthB1, value, false)
- }
- },
- $uGetRect(selector, all) {
- // $uGetRect为uView自带的节点查询简化方法
- return new Promise(resolve => {
- uni.createSelectorQuery().
- in(this)[all ? 'selectAll' : 'select'](selector)
- .boundingClientRect(rect => {
- if (all && Array.isArray(rect) && rect.length) {
- resolve(rect)
- }
- if (!all && rect) {
- resolve(rect)
- }
- })
- .exec()
- })
- },
- }
- };
- </script>
- <style lang="scss" scoped>
- .cj-slider {
- position: relative;
- // background-color: #ebedf0;
- &__line {
- position: absolute;
- width: 100%;
- background-color: #ebedf0;
- }
- &__gap {
- position: relative;
- // 动画有bug,暂时取消
- // transition: width 0.2s;
- background-color: #f17474;
- }
- &__button {
- width: 24px;
- height: 24px;
- border-radius: 50%;
- box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
- background-color: #fff;
- cursor: pointer;
- position: relative;
- .numsize{
- position: absolute;
- width: 60rpx;
- height: 40rpx;
- background-color: #f17474;
- color: #fff;
- top:-50rpx;
- left:50%;
- margin-left: -30rpx;
- display: flex;
- justify-content: center;
- align-items: center;
- border-radius: 10rpx;
- &::after{
- content: ' ';
- position: absolute;
- width: 0;
- height: 0;
- left: 22rpx;
- top: 36rpx;
- // border: 5rpx solid;
- // border-color: #f17474 transparent transparent #f17474;
-
- border: 10rpx solid transparent;
- border-top-color: #f17474;
- }
- }
- }
- &__button-wrap {
- position: absolute;
- top: 50%;
- left: 0;
- transform: translate3d(-50%, -50%, 0);
- }
- &__button-wrap2 {
- position: absolute;
- top: 50%;
- right: 0;
- transform: translate3d(50%, -50%, 0);
- }
- }
- .cj-slider--disabled {
- opacity: 0.5;
- }
- .mouse-move {
- position: fixed;
- left: 0;
- right: 0;
- transform: translateY(-50%);
- opacity: 0;
- }
- </style>
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