fab-tool.vue
3.22 KB
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<template>
<view class="fab-tool">
<view id="toolfab">
<slot></slot>
</view>
<view class="fab-tool-content" :style="placementStyle" id="placementfab">
<slot name="content" v-if="visible"></slot>
</view>
</view>
</template>
<script>
export default {
props: {
visible: {
type: Boolean,
default: false
},
placement: {
type: String,
default: 'auto' // 'auto' | 'top-start' | 'top-center' | 'top-end' | 'bottom-start' | 'bottom-center' | 'bottom-end'
}
},
data() {
return {
placementHeight: '0',
placementType: ''
}
},
watch: {
visible(newVal) {
if (newVal) {
const { screenWidth } = uni.getSystemInfoSync()
this.$nextTick(() => {
let placementWidth = 0
uni
.createSelectorQuery()
.in(this)
.select('#placementfab')
.boundingClientRect((res) => {
this.placementHeight = -res.height + 'px'
placementWidth = res.width
})
.exec()
// 开启自动模式后
if (this.placement == 'auto') {
uni
.createSelectorQuery()
.in(this)
.select('#toolfab')
.boundingClientRect((res) => {
let leftRemain = res.left
let rightRemain = screenWidth - leftRemain
if (rightRemain > placementWidth) {
this.placementType = 'bottom-start'
} else if (leftRemain > placementWidth) {
this.placementType = 'bottom-end'
} else {
this.placementType = 'bottom-center'
}
})
.exec()
}
})
}
}
},
mounted() {
this.placementType = this.placement
},
computed: {
placementStyle() {
let position = {}
switch (this.placementType) {
case 'top-start':
position = {
top: this.placementHeight,
left: 0
}
break
case 'top-center':
position = {
top: this.placementHeight,
left: '50%',
transform: 'translateX(-50%)'
}
break
case 'top-end':
position = {
top: this.placementHeight,
right: 0
}
break
case 'bottom-start':
position = {
bottom: this.placementHeight,
left: 0
}
break
case 'bottom-center':
position = {
bottom: this.placementHeight,
left: '50%',
transform: 'translateX(-50%)'
}
break
case 'bottom-end':
position = {
bottom: this.placementHeight,
right: 0
}
break
default:
break
}
return position
}
},
methods: {
//
}
}
</script>
<style lang="scss">
.fab-tool {
position: relative;
.fab-tool-content {
position: absolute;
z-index: 999;
background-color: #ffffff;
box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.05), 2px 2px 4px rgba(0, 0, 0, 0.05);
border-radius: 12rpx;
box-sizing: border-box;
}
}
</style>