You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
476 lines
13 KiB
476 lines
13 KiB
<!-- 步进器 -->
|
|
<template>
|
|
<view class="u-numberbox">
|
|
<view
|
|
class="u-icon-minus"
|
|
@touchstart.prevent="btnTouchStart('minus')"
|
|
@touchend.stop.prevent="clearTimer"
|
|
:class="{ 'u-icon-disabled': disabled || inputVal <= min }"
|
|
:style="{
|
|
background: bgColor,
|
|
height: inputHeight + 'rpx',
|
|
color: color,
|
|
fontSize: size + 'rpx',
|
|
minHeight: '1.4em'
|
|
}"
|
|
>
|
|
<view :style="'font-size:' + (Number(size) + 10) + 'rpx'" class="num-btn">-</view>
|
|
</view>
|
|
<input
|
|
:disabled="disabledInput || disabled"
|
|
:cursor-spacing="getCursorSpacing"
|
|
:class="{ 'u-input-disabled': disabled }"
|
|
v-model="inputVal"
|
|
class="u-number-input"
|
|
@blur="onBlur"
|
|
type="number"
|
|
:style="{
|
|
color: color,
|
|
fontSize: size + 'rpx',
|
|
background: bgColor,
|
|
height: inputHeight + 'rpx',
|
|
width: inputWidth + 'rpx'
|
|
}"
|
|
/>
|
|
<view
|
|
class="u-icon-plus"
|
|
@touchstart.prevent="btnTouchStart('plus')"
|
|
@touchend.stop.prevent="clearTimer"
|
|
:class="{ 'u-icon-disabled': disabled || inputVal >= max }"
|
|
:style="{
|
|
background: bgColor,
|
|
height: inputHeight + 'rpx',
|
|
color: color,
|
|
fontSize: size + 'rpx',
|
|
minHeight: '1.4em'
|
|
}"
|
|
>
|
|
<view :style="'font-size:' + (Number(size) + 10) + 'rpx'" class="num-btn">+</view>
|
|
</view>
|
|
</view>
|
|
</template>
|
|
<script>
|
|
/**
|
|
* numberBox 步进器
|
|
* @description 该组件一般用于商城购物选择物品数量的场景。注意:该输入框只能输入大于或等于0的整数,不支持小数输入
|
|
* @tutorial https://www.uviewui.com/components/numberBox.html
|
|
* @property {Number} value 输入框初始值(默认1)
|
|
* @property {String} bg-color 输入框和按钮的背景颜色(默认#F2F3F5)
|
|
* @property {Number} min 用户可输入的最小值(默认0)
|
|
* @property {Number} max 用户可输入的最大值(默认99999)
|
|
* @property {Number} step 步长,每次加或减的值(默认1)
|
|
* @property {Number} stepFirst 步进值,首次增加或最后减的值(默认step值和一致)
|
|
* @property {Boolean} disabled 是否禁用操作,禁用后无法加减或手动修改输入框的值(默认false)
|
|
* @property {Boolean} disabled-input 是否禁止输入框手动输入值(默认false)
|
|
* @property {Boolean} positive-integer 是否只能输入正整数(默认true)
|
|
* @property {String | Number} size 输入框文字和按钮字体大小,单位rpx(默认26)
|
|
* @property {String} color 输入框文字和加减按钮图标的颜色(默认#323233)
|
|
* @property {String | Number} input-width 输入框宽度,单位rpx(默认80)
|
|
* @property {String | Number} input-height 输入框和按钮的高度,单位rpx(默认50)
|
|
* @property {String | Number} index 事件回调时用以区分当前发生变化的是哪个输入框
|
|
* @property {Boolean} long-press 是否开启长按连续递增或递减(默认true)
|
|
* @property {String | Number} press-time 开启长按触发后,每触发一次需要多久,单位ms(默认250)
|
|
* @property {String | Number} cursor-spacing 指定光标于键盘的距离,避免键盘遮挡输入框,单位rpx(默认200)
|
|
* @event {Function} change 输入框内容发生变化时触发,对象形式
|
|
* @event {Function} blur 输入框失去焦点时触发,对象形式
|
|
* @event {Function} minus 点击减少按钮时触发(按钮可点击情况下),对象形式
|
|
* @event {Function} plus 点击增加按钮时触发(按钮可点击情况下),对象形式
|
|
* @example <u-numberbox :min="1" :max="100"></u-numberbox>
|
|
*/
|
|
export default {
|
|
name: "u-numberbox",
|
|
emits: ["update:modelValue", "input", "change", "blur", "plus", "minus"],
|
|
props: {
|
|
// 预显示的数字
|
|
value: {
|
|
type: Number,
|
|
default: 1
|
|
},
|
|
modelValue: {
|
|
type: Number,
|
|
default: 1
|
|
},
|
|
// 背景颜色
|
|
bgColor: {
|
|
type: String,
|
|
default: "#F2F3F5"
|
|
},
|
|
// 最小值
|
|
min: {
|
|
type: Number,
|
|
default: 0
|
|
},
|
|
// 最大值
|
|
max: {
|
|
type: Number,
|
|
default: 99999
|
|
},
|
|
// 步进值,每次加或减的值
|
|
step: {
|
|
type: Number,
|
|
default: 1
|
|
},
|
|
// 步进值,首次增加或最后减的值
|
|
stepFirst: {
|
|
type: Number,
|
|
default: 0
|
|
},
|
|
// 是否只能输入 step 的倍数
|
|
stepStrictly: {
|
|
type: Boolean,
|
|
default: false
|
|
},
|
|
// 是否禁用加减操作
|
|
disabled: {
|
|
type: Boolean,
|
|
default: false
|
|
},
|
|
// input的字体大小,单位rpx
|
|
size: {
|
|
type: [Number, String],
|
|
default: 26
|
|
},
|
|
// 加减图标的颜色
|
|
color: {
|
|
type: String,
|
|
default: "#323233"
|
|
},
|
|
// input宽度,单位rpx
|
|
inputWidth: {
|
|
type: [Number, String],
|
|
default: 80
|
|
},
|
|
// input高度,单位rpx
|
|
inputHeight: {
|
|
type: [Number, String],
|
|
default: 50
|
|
},
|
|
// index索引,用于列表中使用,让用户知道是哪个numberbox发生了变化,一般使用for循环出来的index值即可
|
|
index: {
|
|
type: [Number, String],
|
|
default: ""
|
|
},
|
|
// 是否禁用输入框,与disabled作用于输入框时,为OR的关系,即想要禁用输入框,又可以加减的话
|
|
// 设置disabled为false,disabledInput为true即可
|
|
disabledInput: {
|
|
type: Boolean,
|
|
default: false
|
|
},
|
|
// 输入框于键盘之间的距离
|
|
cursorSpacing: {
|
|
type: [Number, String],
|
|
default: 100
|
|
},
|
|
// 是否开启长按连续递增或递减
|
|
longPress: {
|
|
type: Boolean,
|
|
default: true
|
|
},
|
|
// 开启长按触发后,每触发一次需要多久
|
|
pressTime: {
|
|
type: [Number, String],
|
|
default: 250
|
|
},
|
|
// 是否只能输入大于或等于0的整数(正整数)
|
|
positiveInteger: {
|
|
type: Boolean,
|
|
default: true
|
|
}
|
|
},
|
|
watch: {
|
|
valueCom(v1, v2) {
|
|
// 只有value的改变是来自外部的时候,才去同步inputVal的值,否则会造成循环错误
|
|
if (!this.changeFromInner) {
|
|
this.inputVal = v1;
|
|
// 因为inputVal变化后,会触发this.handleChange(),在其中changeFromInner会再次被设置为true,
|
|
// 造成外面修改值,也导致被认为是内部修改的混乱,这里进行this.$nextTick延时,保证在运行周期的最后处
|
|
// 将changeFromInner设置为false
|
|
this.$nextTick(function() {
|
|
this.changeFromInner = false;
|
|
});
|
|
}
|
|
},
|
|
inputVal(v1, v2) {
|
|
// 为了让用户能够删除所有输入值,重新输入内容,删除所有值后,内容为空字符串
|
|
if (v1 == "") return;
|
|
let value = 0;
|
|
// 首先判断是否数值,并且在min和max之间,如果不是,使用原来值
|
|
let tmp = this.isNumber(v1);
|
|
if (tmp && v1 >= this.min && v1 <= this.max) value = v1;
|
|
else value = v2;
|
|
// 判断是否只能输入大于等于0的整数
|
|
if (this.positiveInteger) {
|
|
// 小于0,或者带有小数点,
|
|
if (v1 < 0 || String(v1).indexOf(".") !== -1) {
|
|
value = v2;
|
|
// 双向绑定input的值,必须要使用$nextTick修改显示的值
|
|
this.$nextTick(() => {
|
|
this.inputVal = v2;
|
|
});
|
|
}
|
|
}
|
|
// 发出change事件
|
|
this.handleChange(value, "change");
|
|
},
|
|
min(v1) {
|
|
if (v1 !== undefined && v1 != "" && this.valueCom < v1) {
|
|
this.$emit("input", v1);
|
|
}
|
|
},
|
|
max(v1) {
|
|
if (v1 !== undefined && v1 != "" && this.valueCom > v1) {
|
|
this.$emit("input", v1);
|
|
}
|
|
}
|
|
},
|
|
data() {
|
|
return {
|
|
inputVal: 1, // 输入框中的值,不能直接使用props中的value,因为应该改变props的状态
|
|
timer: null, // 用作长按的定时器
|
|
changeFromInner: false, // 值发生变化,是来自内部还是外部
|
|
innerChangeTimer: null, // 内部定时器
|
|
};
|
|
},
|
|
created() {
|
|
this.inputVal = Number(this.valueCom);
|
|
},
|
|
mounted() {
|
|
|
|
},
|
|
computed: {
|
|
getCursorSpacing() {
|
|
// 先将值转为px单位,再转为数值
|
|
return Number(uni.upx2px(this.cursorSpacing));
|
|
},
|
|
valueCom(){
|
|
// #ifndef VUE3
|
|
return this.value;
|
|
// #endif
|
|
|
|
// #ifdef VUE3
|
|
return this.modelValue;
|
|
// #endif
|
|
}
|
|
},
|
|
methods: {
|
|
// 点击退格键
|
|
btnTouchStart(callback) {
|
|
// 先执行一遍方法,否则会造成松开手时,就执行了clearTimer,导致无法实现功能
|
|
this[callback]();
|
|
// 如果没开启长按功能,直接返回
|
|
if (!this.longPress) return;
|
|
clearInterval(this.timer); //再次清空定时器,防止重复注册定时器
|
|
this.timer = null;
|
|
this.timer = setInterval(() => {
|
|
// 执行加或减函数
|
|
this[callback]();
|
|
}, this.pressTime);
|
|
},
|
|
clearTimer() {
|
|
this.$nextTick(() => {
|
|
clearInterval(this.timer);
|
|
this.timer = null;
|
|
});
|
|
},
|
|
minus() {
|
|
this.computeVal("minus");
|
|
},
|
|
plus() {
|
|
this.computeVal("plus");
|
|
},
|
|
// 为了保证小数相加减出现精度溢出的问题
|
|
calcPlus(num1, num2) {
|
|
let baseNum, baseNum1, baseNum2;
|
|
try {
|
|
baseNum1 = num1.toString().split(".")[1].length;
|
|
} catch (e) {
|
|
baseNum1 = 0;
|
|
}
|
|
try {
|
|
baseNum2 = num2.toString().split(".")[1].length;
|
|
} catch (e) {
|
|
baseNum2 = 0;
|
|
}
|
|
baseNum = Math.pow(10, Math.max(baseNum1, baseNum2));
|
|
let precision = baseNum1 >= baseNum2 ? baseNum1 : baseNum2; //精度
|
|
return ((num1 * baseNum + num2 * baseNum) / baseNum).toFixed(precision);
|
|
},
|
|
// 为了保证小数相加减出现精度溢出的问题
|
|
calcMinus(num1, num2) {
|
|
let baseNum, baseNum1, baseNum2;
|
|
try {
|
|
baseNum1 = num1.toString().split(".")[1].length;
|
|
} catch (e) {
|
|
baseNum1 = 0;
|
|
}
|
|
try {
|
|
baseNum2 = num2.toString().split(".")[1].length;
|
|
} catch (e) {
|
|
baseNum2 = 0;
|
|
}
|
|
baseNum = Math.pow(10, Math.max(baseNum1, baseNum2));
|
|
let precision = baseNum1 >= baseNum2 ? baseNum1 : baseNum2;
|
|
return ((num1 * baseNum - num2 * baseNum) / baseNum).toFixed(precision);
|
|
},
|
|
computeVal(type) {
|
|
uni.hideKeyboard();
|
|
if (this.disabled) return;
|
|
let value = 0;
|
|
// 新增stepFirst开始
|
|
// 减
|
|
if (type === "minus") {
|
|
if (this.stepFirst > 0 && this.inputVal == this.stepFirst) {
|
|
value = this.min;
|
|
} else {
|
|
value = this.calcMinus(this.inputVal, this.step);
|
|
}
|
|
} else if (type === "plus") {
|
|
if (this.stepFirst > 0 && this.inputVal < this.stepFirst) {
|
|
value = this.stepFirst;
|
|
} else {
|
|
value = this.calcPlus(this.inputVal, this.step);
|
|
}
|
|
}
|
|
if (this.stepStrictly) {
|
|
let strictly = value % this.step;
|
|
if (strictly > 0) {
|
|
value -= strictly;
|
|
}
|
|
if (this.stepFirst > 0 && value > 0 && value < this.stepFirst) {
|
|
if (type === "minus") {
|
|
value = 0;
|
|
} else if (type === "plus") {
|
|
value = this.stepFirst + (this.step - (this.stepFirst % this.step));
|
|
}
|
|
}
|
|
}
|
|
if (value > this.max) {
|
|
value = this.max;
|
|
} else if (value < this.min) {
|
|
value = this.min;
|
|
}
|
|
// 新增stepFirst结束
|
|
this.inputVal = value;
|
|
this.handleChange(value, type);
|
|
},
|
|
// 处理用户手动输入的情况
|
|
onBlur(event) {
|
|
let val = 0;
|
|
let value = event.detail.value;
|
|
// 如果为非0-9数字组成,或者其第一位数值为0,直接让其等于min值
|
|
// 这里不直接判断是否正整数,是因为用户传递的props min值可能为0
|
|
if (!/(^\d+$)/.test(value) || value[0] == 0) val = this.min;
|
|
val = +value;
|
|
|
|
// 新增stepFirst开始
|
|
if (this.stepFirst > 0 && this.inputVal < this.stepFirst && this.inputVal > 0) {
|
|
val = this.stepFirst;
|
|
}
|
|
// 新增stepFirst结束
|
|
if (this.stepStrictly) {
|
|
let strictly = val % this.step;
|
|
if (strictly > 0) {
|
|
val -= strictly;
|
|
}
|
|
if (this.stepFirst > 0 && val > 0 && val < this.stepFirst) {
|
|
val = this.stepFirst + (this.step - (this.stepFirst % this.step));
|
|
}
|
|
}
|
|
if (val > this.max) {
|
|
val = this.max;
|
|
} else if (val < this.min) {
|
|
val = this.min;
|
|
}
|
|
this.$nextTick(() => {
|
|
this.inputVal = val;
|
|
});
|
|
this.handleChange(val, "blur");
|
|
},
|
|
handleChange(value, type) {
|
|
if (this.disabled) return;
|
|
// 清除定时器,避免造成混乱
|
|
if (this.innerChangeTimer) {
|
|
clearTimeout(this.innerChangeTimer);
|
|
this.innerChangeTimer = null;
|
|
}
|
|
// 发出input事件,修改通过v-model绑定的值,达到双向绑定的效果
|
|
this.changeFromInner = true;
|
|
// 一定时间内,清除changeFromInner标记,否则内部值改变后
|
|
// 外部通过程序修改value值,将会无效
|
|
this.innerChangeTimer = setTimeout(() => {
|
|
this.changeFromInner = false;
|
|
}, 150);
|
|
this.$emit("input", Number(value));
|
|
this.$emit("update:modelValue", Number(value));
|
|
this.$emit(type, {
|
|
// 转为Number类型
|
|
value: Number(value),
|
|
index: this.index
|
|
});
|
|
},
|
|
/**
|
|
* 验证十进制数字
|
|
*/
|
|
isNumber(value) {
|
|
return /^(?:-?\d+|-?\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(value);
|
|
}
|
|
}
|
|
};
|
|
</script>
|
|
|
|
<style lang="scss" scoped>
|
|
.u-numberbox {
|
|
display: inline-flex;
|
|
align-items: center;
|
|
}
|
|
|
|
.u-number-input {
|
|
position: relative;
|
|
text-align: center;
|
|
padding: 0;
|
|
margin: 0 6rpx;
|
|
display: flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
}
|
|
|
|
.u-icon-plus,
|
|
.u-icon-minus {
|
|
width: 60rpx;
|
|
display: flex;
|
|
justify-content: center;
|
|
align-items: center;
|
|
}
|
|
|
|
.u-icon-plus {
|
|
border-radius: 0 8rpx 8rpx 0;
|
|
}
|
|
|
|
.u-icon-minus {
|
|
border-radius: 8rpx 0 0 8rpx;
|
|
}
|
|
|
|
.u-icon-disabled {
|
|
color: #c8c9cc !important;
|
|
background: #f7f8fa !important;
|
|
}
|
|
|
|
.u-input-disabled {
|
|
color: #c8c9cc !important;
|
|
background-color: #f2f3f5 !important;
|
|
}
|
|
/* #ifdef H5 */
|
|
.num-btn {
|
|
font-weight: 550;
|
|
position: relative;
|
|
top: -4rpx;
|
|
}
|
|
/* #endif */
|
|
/* #ifndef H5 */
|
|
.num-btn {
|
|
font-weight: 550;
|
|
position: relative;
|
|
top: 0rpx;
|
|
}
|
|
/* #endif */
|
|
</style>
|
|
|