434 lines
12 KiB
Vue
434 lines
12 KiB
Vue
<template>
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<div class="unit-converter" :style="{ width: width + 'px' }">
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<!-- 数值输入框 -->
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<input
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v-model.number="inputValue"
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:disabled="inputDisable"
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class="input-field"
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type="number"
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ref="inputRef"
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:style="{ width: inputWidth + 'px', height: height + 'px' }"
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@change="handleInputChange"
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@focus="selectAllText"
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/>
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<!-- 单位标签 -->
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<span v-if="enableConvert" ref="unitLabel" @click="cycleUnit" @dblclick="toggleUnitSelector" class="unit-label" :style="{ color: 'blue', height: height + 'px' }">
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{{ textUnitName }}
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</span>
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<span v-else ref="unitLabel" class="unit-label" :style="{ color: 'blue', height: height + 'px' }">
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{{ textUnitName }}
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</span>
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<!-- 单位选择弹出窗口 -->
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<div v-if="showUnitSelector" class="unit-selector" ref="unitSelector" :style="{ left: unitSelectorLeft + 'px', top: unitSelectorTop + 'px' }">
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<div v-for="unit in sortedUnits" :key="unit.id" @click="selectUnit(unit)" class="unit-option">
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{{ showEnglishOnly ? unit.unitName.split('(')[0] : unit.unitName }}
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</div>
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</div>
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</div>
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</template>
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<script>
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import { listSysUnitConvert } from '@/api/system/sysUnitConvert.js';
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export default {
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name: 'UnitConverter',
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props: {
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unitType: {
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// 当前单位类型 (required)
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type: String,
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required: true
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},
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unitOrder: {
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// 当前单位序号 (sync)
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type: Number,
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default: 0
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},
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value: {
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// 输入数值 (sync)
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type: Number,
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required: true
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},
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showEnglishOnly: {
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// 是否只显示英文
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type: Boolean,
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default: false
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},
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decimalPlaces: {
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// 小数位数
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type: Number,
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default: 5,
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validator: (v) => v >= 0 && v <= 10
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},
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width: {
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type: Number,
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required: false,
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default: 180
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},
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height: {
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type: Number,
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required: false,
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default: 32
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},
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enableConvert: {
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//是否能够进行单位换算
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type: Boolean,
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default: true
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},
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userDefined: {
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//自定义输入单位显示
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type: Boolean,
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default: false
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},
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userDefinedunitName: {
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//自定义输入单位显示
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type: String,
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default: ''
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},
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inputDisable: {
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type: Boolean,
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required: false,
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default: false
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}
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},
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mounted() {
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this.$nextTick(() => {
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this.updateInputWidth();
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});
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// 在挂载时添加全局点击事件监听器
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document.addEventListener('click', this.handleClickOutside);
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},
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beforeUnmount() {
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// 在组件销毁前移除全局点击事件监听器
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document.removeEventListener('click', this.handleClickOutside);
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},
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data() {
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return {
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inputValue: this.value,
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unitData: [], // 原始单位数据
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showUnitSelector: false, // 显示选择器
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currentUnit: null, // 当前选中单位
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baseUnit: null, // 基准单位
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inputWidth: 120, //输入框的宽度
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textUnitName: '',
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unitSelectorLeft: 0,
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unitSelectorTop: 0,
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// 新增三个数据项
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originalValue: this.value, // 原始输入值
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originalUnit: null, // 原始输入单位
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isInternalUpdate: false // 更新锁定标志
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};
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},
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computed: {
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// 显示的单位文本
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displayUnitText() {
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if (!this.currentUnit) return '';
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return this.showEnglishOnly ? this.currentUnit.unitName.split('(')[0].trim() : this.currentUnit.unitName;
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},
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// 当前类型的单位列表（按unitOrder排序）
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sortedUnits() {
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return this.unitData.filter((u) => u.unitType === this.unitType).sort((a, b) => a.unitOrder - b.unitOrder);
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},
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// 弹窗定位样式
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popupPosition() {
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if (!this.$refs.unitLabel) return {};
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const rect = this.$refs.unitLabel.getBoundingClientRect();
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return {
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top: `${rect.bottom + window.scrollY}px`,
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left: `${rect.left + window.scrollX}px`
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};
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}
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},
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watch: {
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// 监听单位类型变化
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unitType: {
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immediate: true,
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async handler(newType) {
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if (this.userDefined) {
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this.textUnitName = this.userDefinedunitName;
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this.$nextTick(() => {
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this.updateInputWidth();
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});
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} else {
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await this.loadUnits(newType);
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this.initCurrentUnit();
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}
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}
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},
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// 监听外部单位序号变化
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unitOrder(newOrder) {
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if (this.userDefined) {
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this.textUnitName = this.userDefinedunitName;
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this.$nextTick(() => {
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this.updateInputWidth();
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});
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} else {
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const target = this.sortedUnits.find((u) => u.unitOrder === newOrder);
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if (target) this.currentUnit = target;
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this.textUnitName = this.showEnglishOnly ? target.unitName.split('(')[0].trim() : target.unitName;
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this.$nextTick(() => {
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this.updateInputWidth();
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});
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}
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},
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// 监听输入值变化
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value(newVal) {
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if (!this.isInternalUpdate) {
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// 外部更新时重置原始值
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this.originalValue = newVal === 'NaN' ? 0 : newVal;
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this.originalUnit = this.currentUnit;
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this.inputValue = newVal === '' ? 0 : newVal;
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}
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this.isInternalUpdate = false;
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}
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},
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methods: {
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selectAllText(event) {
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// 通过 event.target 获取触发事件的 input 元素
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const input = event.target;
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// 调用 select() 方法全选文本
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input.select();
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},
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handleMouseMove(event) {
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if (this.showUnitSelector) {
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// 鼠标右下方偏移量
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const offsetX = 10;
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const offsetY = 10;
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this.unitSelectorLeft = event.clientX + offsetX;
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this.unitSelectorTop = event.clientY + offsetY;
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// 获取弹窗元素
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const unitSelector = this.$refs.unitSelector;
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if (unitSelector) {
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// 检查是否超出屏幕右边界
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if (this.unitSelectorLeft + unitSelector.offsetWidth > window.innerWidth) {
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this.unitSelectorLeft = window.innerWidth - unitSelector.offsetWidth;
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}
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// 检查是否超出屏幕下边界
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if (this.unitSelectorTop + unitSelector.offsetHeight > window.innerHeight) {
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this.unitSelectorTop = window.innerHeight - unitSelector.offsetHeight;
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}
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}
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}
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},
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updateInputWidth() {
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const spanWidth = this.$refs.unitLabel.offsetWidth + 5;
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// console.log("widht", this.width, "spanWidth", spanWidth)
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this.inputWidth = this.width - spanWidth;
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},
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// 处理全局点击事件
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handleClickOutside(event) {
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if (this.$refs.unitSelector && !this.$refs.unitSelector.contains(event.target)) {
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this.showUnitSelector = false;
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}
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},
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// 切换单位选择器的显示状态
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toggleUnitSelector() {
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this.showUnitSelector = !this.showUnitSelector;
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},
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// 加载单位数据
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async loadUnits(unitType) {
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try {
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const res = await listSysUnitConvert({
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unitType: unitType,
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status: 'Y'
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});
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// console.log(res);
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this.unitData = res.rows;
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this.baseUnit = this.unitData.find((u) => u.baseUnit === 'Y');
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// console.log(this.baseUnit.unitName);
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} catch (e) {
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console.error('单位数据加载失败:', e);
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}
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},
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// 初始化当前单位
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initCurrentUnit() {
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const target = this.sortedUnits.find((u) => u.unitOrder === this.unitOrder);
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this.currentUnit = target || this.baseUnit || this.sortedUnits[0];
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// 初始化时设置原始单位（关键修复）
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this.originalUnit = this.currentUnit;
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this.textUnitName = this.showEnglishOnly ? target.unitName.split('(')[0].trim() : target.unitName;
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this.$nextTick(() => {
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this.updateInputWidth();
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});
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},
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// 输入变化处理
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handleInputChange() {
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// 记录原始值和单位
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this.originalValue = this.inputValue;
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this.originalUnit = this.currentUnit;
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// console.log(this.originalValue);
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this.$emit('input', this.inputValue);
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// this.convertAndEmit();
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},
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// 循环切换单位
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// 修改单位切换方法
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cycleUnit() {
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const index = this.sortedUnits.findIndex((u) => u === this.currentUnit);
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const newUnit = this.sortedUnits[(index + 1) % this.sortedUnits.length];
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this.currentUnit = newUnit;
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this.textUnitName = this.showEnglishOnly ? newUnit.unitName.split('(')[0].trim() : newUnit.unitName;
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this.$nextTick(() => {
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this.updateInputWidth();
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this.convertAndEmit(); // 触发转换
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});
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},
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// 选择单位
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selectUnit(unit) {
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this.currentUnit = unit;
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this.showUnitSelector = false;
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this.$nextTick(() => {
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this.updateInputWidth();
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this.convertAndEmit(); // 触发转换
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});
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},
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// 执行换算并提交事件
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convertAndEmit() {
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// 移除参数
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if (!this.currentUnit || !this.baseUnit || !this.originalUnit) return;
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let newValue = 0;
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if (this.unitType === 'temperature') {
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newValue = this.handleTemperatureConversion(this.originalUnit, this.currentUnit);
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} else {
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// 通过基准单位进行两次精确转换
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const baseValue = this.originalValue / this.originalUnit.conversionFactor;
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newValue = baseValue * this.currentUnit.conversionFactor;
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}
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const roundedValue = this.roundValue(newValue);
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this.isInternalUpdate = true; // 锁定更新
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this.inputValue = roundedValue;
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this.$emit('input', roundedValue);
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this.$emit('update:unitOrder', this.currentUnit.unitOrder);
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this.$emit('conversion', {
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initialValue: this.originalValue,
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newValue: roundedValue,
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oldUnit: this.originalUnit.unitName,
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newUnit: this.currentUnit.unitName,
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oldOrder: this.originalUnit.unitOrder,
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newOrder: this.currentUnit.unitOrder
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});
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},
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// 温度单位换算
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// 温度转换调整（使用原始值）
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handleTemperatureConversion(oldUnit, newUnit) {
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const oldOrder = oldUnit.unitOrder;
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const newOrder = newUnit.unitOrder;
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// console.log(1111, this.originalValue);
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// 使用原始值计算
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let celsius;
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switch (oldOrder) {
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case 0:
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celsius = this.originalValue;
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break;
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case 1:
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celsius = ((this.originalValue - 32) * 5) / 9;
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break;
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case 2:
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celsius = this.originalValue - 273.15;
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break;
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default:
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throw new Error('无效温度单位');
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}
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switch (newOrder) {
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case 0:
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return celsius;
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case 1:
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return (celsius * 9) / 5 + 32;
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case 2:
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return celsius + 273.15;
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default:
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throw new Error('无效温度单位');
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}
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},
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// 四舍六入五成双
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roundValue(value) {
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const multiplier = Math.pow(10, this.decimalPlaces);
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const val = value * multiplier;
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const intVal = Math.trunc(val);
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const decimalPart = val - intVal;
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if (decimalPart < 0.5) {
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return intVal / multiplier;
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} else if (decimalPart > 0.5) {
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return (intVal + 1) / multiplier;
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} else {
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return intVal % 2 === 0 ? intVal / multiplier : (intVal + 1) / multiplier;
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}
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}
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}
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};
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</script>
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<style scoped>
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.unit-converter {
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display: flex;
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align-items: center;
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gap: 2px;
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position: relative;
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}
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.input-field {
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border: 1px solid #d6d5d5;
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border-radius: 4px;
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font-size: 14px;
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}
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.unit-label {
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cursor: pointer;
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font-weight: bold;
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border: 1px solid #d6d5d5;
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border-radius: 4px;
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font-size: 12px;
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padding-left: 10px;
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padding-right: 5px;
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white-space: nowrap;
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}
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.unit-label:hover {
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background: #f0f8ff;
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}
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.unit-selector {
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/* 设置容器的最大高度，当内容超出这个高度时会出现滚动条 */
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max-height: 100px;
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/* 超出内容时显示纵向滚动条 */
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overflow-y: auto;
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/* 横向内容不溢出，隐藏多余部分 */
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overflow-x: hidden;
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/* 其他样式保持不变 */
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position: absolute;
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z-index: 9999;
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background-color: white;
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border: 1px solid #ccc;
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border-radius: 4px;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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padding: 2px 0;
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min-width: 200px;
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list-style-type: none;
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margin-left: 100px;
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}
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.unit-option {
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padding: 2px 10px;
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cursor: pointer;
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font-size: 14px;
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}
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.unit-option:hover {
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background-color: #f0f0f0;
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}
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</style>
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