168 lines
3.2 KiB
Vue
168 lines
3.2 KiB
Vue
<template>
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<view class="uni-numbox">
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<view :class="{'uni-numbox--disabled': inputValue <= min || disabled}" class="uni-numbox__minus" @click="_calcValue('minus')">-</view>
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<input :disabled="disabled" v-model="inputValue" class="uni-numbox__value" type="number" @blur="_onBlur">
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<view :class="{'uni-numbox--disabled': inputValue >= max || disabled}" class="uni-numbox__plus" @click="_calcValue('plus')">+</view>
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</view>
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</template>
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<script>
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export default {
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name: 'UniNumberBox',
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props: {
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value: {
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type: [Number, String],
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default: 1
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},
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min: {
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type: [Number, String],
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default: 0
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},
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max: {
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type: [Number, String],
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default: 1
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},
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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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disabled: {
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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inputValue: 0
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}
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},
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watch: {
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value(val) {
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this.inputValue = +val
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},
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inputValue(newVal, oldVal) {
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if (+newVal !== +oldVal) {
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this.$emit('change', newVal)
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}
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}
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},
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created() {
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this.inputValue = +this.value
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},
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methods: {
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_calcValue(type) {
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if (this.disabled) {
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return
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}
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const scale = this._getDecimalScale()
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let value = this.inputValue * scale
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let step = this.step * scale
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if (type === 'minus') {
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value -= step
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} else if (type === 'plus') {
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value += step
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}
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if (value < this.min || value > this.max) {
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return
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}
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this.inputValue = value / scale
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},
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_getDecimalScale() {
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let scale = 1
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// 浮点型
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if (~~this.step !== this.step) {
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scale = Math.pow(10, (this.step + '').split('.')[1].length)
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}
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return scale
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},
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_onBlur(event) {
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let value = event.detail.value
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if (!value) {
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this.inputValue = 0
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return
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}
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value = +value
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if (value > this.max) {
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value = this.max
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} else if (value < this.min) {
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value = this.min
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}
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this.inputValue = value
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}
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}
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}
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</script>
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<style>
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@charset "UTF-8";
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.uni-numbox {
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display: inline-flex;
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flex-direction: row;
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justify-content: flex-start;
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height: 70upx;
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position: relative
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}
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.uni-numbox:after {
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content: '';
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position: absolute;
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transform-origin: center;
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box-sizing: border-box;
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pointer-events: none;
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top: -50%;
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left: -50%;
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right: -50%;
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bottom: -50%;
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border: 1px solid #e5e5e5;
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border-radius: 12upx;
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transform: scale(.5)
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}
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.uni-numbox__minus,
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.uni-numbox__plus {
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margin: 0;
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background-color: #f8f8f8;
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width: 70upx;
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font-size: 40upx;
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height: 100%;
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line-height: 70upx;
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text-align: center;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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color: #333;
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position: relative
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}
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.uni-numbox__value {
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position: relative;
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background-color: #fff;
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width: 80upx;
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height: 100%;
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text-align: center;
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padding: 0
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}
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.uni-numbox__value:after {
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content: '';
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position: absolute;
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transform-origin: center;
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box-sizing: border-box;
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pointer-events: none;
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top: -50%;
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left: -50%;
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right: -50%;
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bottom: -50%;
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border-style: solid;
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border-color: #e5e5e5;
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border-left-width: 1px;
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border-right-width: 1px;
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border-top-width: 0;
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border-bottom-width: 0;
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transform: scale(.5)
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}
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.uni-numbox--disabled {
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color: silver
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}
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</style>
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