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calculator.vue
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calculator.vue
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<template>
<window name="计算器" :dark="false" :size="{ height: 384, width: 512 }">
<reveal-container>
<div class="temp-area">{{tempText}}</div>
<div class="display-area">{{ displayText}}</div>
<div>
<reveal v-for="op in operators" :key="op" class="key-btn op-btn" @click="keydown(op)">{{op}}</reveal>
</div>
<div>
<reveal v-for="key in numKeys" :key="key" class="key-btn" @click="keydown(key)">{{key}}</reveal>
</div>
</reveal-container>
</window>
</template>
<script lang="ts">
import { defineComponent, reactive, computed } from 'vue'
import { createArray, resetArray } from '@/util'
export default defineComponent({
setup () {
const displayTextList = reactive<Array<string | number>>([0])
const displayText = computed(() => displayTextList.join(''))
const codeList = reactive(new Array<string | number>())
const tempText = computed(() => codeList.join(''))
const numKeys = reactive(createArray(10, i => i))
const clacMethodMap = (op: '+' | '-' | '*' | '/', l: number, r: number) => {
switch (op) {
case '+':
return l + r
case '-':
return l - r
case '*':
return l * r
case '/':
return l / r
}
}
const calc = () => {
const readNum = () => {
let n = codeList.shift()
while (n && typeof codeList[0] === 'number') {
n = `${n}${codeList.shift()}`
}
return Number(n)
}
let l = readNum()
while (codeList.length && l !== undefined) {
const op = codeList.shift()
const r = readNum()
l = clacMethodMap(op as any, l, r)
}
return l
}
const keydown = (code: number | string) => {
const dl = displayTextList
switch (code) {
case 'c':
resetArray(dl, 0)
resetArray(codeList)
break
case '+':
case '-':
case '*':
case '/':
dl.push(code)
codeList.push(code)
break
case 'ce':
resetArray(dl, 0)
break
case '=':
resetArray(dl, ...codeList, '=', calc())
break
case 'del':
dl.pop()
codeList.pop()
break
default:
codeList.push(code)
if (typeof dl[dl.length - 1] !== 'number') {
resetArray(dl)
}
if (dl.length === 1 && dl[0] === 0) {
dl.pop()
}
dl.push(code)
break
}
}
const operators = reactive(['+', '-', '*', '/', 'c', 'ce', '=', 'del'])
return {
numKeys,
displayText,
keydown,
operators,
tempText
}
}
})
</script>
<style lang="scss" scoped>
.temp-area {
line-height: 16px;
color: #b5b5b5;
padding: 4px;
text-align: right;
}
.display-area {
line-height: 32px;
padding: 8px;
text-align: right;
font-weight: bold;
font-size: 2em;
}
.key-btn {
text-align: center;
line-height: 48px;
height: 48px;
width: 72px;
background: #f2f2f2;
transition: 0.3s all;
cursor: pointer;
&:hover {
background: #b5b5b5;
}
}
.op-btn {
background: #d6d6d6;
}
</style>