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<template>
<div
class="multi-select-operate"
:style="{
left: range.minX * canvasScale + 'px',
top: range.minY * canvasScale + 'px',
}"
>
<BorderLine v-for="line in borderLines" :key="line.type" :type="line.type" :style="line.style" />
<template v-if="!disableResize">
<ResizeHandler
v-for="point in resizeHandlers"
:key="point.direction"
:type="point.direction"
:style="point.style"
@mousedown.stop="scaleMultiElement($event, range, point.direction)"
/>
</template>
</div>
</template>
<script lang="ts" setup>
import { computed, ref, watchEffect } from 'vue'
import { storeToRefs } from 'pinia'
import { useMainStore } from '@/store'
import type { PPTElement } from '@/types/slides'
import { getElementListRange } from '@/utils/element'
import type { OperateResizeHandlers, MultiSelectRange } from '@/types/edit'
import useCommonOperate from '../hooks/useCommonOperate'
import ResizeHandler from './ResizeHandler.vue'
import BorderLine from './BorderLine.vue'
const props = defineProps<{
elementList: PPTElement[]
scaleMultiElement: (e: MouseEvent, range: MultiSelectRange, command: OperateResizeHandlers) => void
}>()
const { activeElementIdList, canvasScale } = storeToRefs(useMainStore())
const localActiveElementList = computed(() => props.elementList.filter(el => activeElementIdList.value.includes(el.id)))
const range = ref({
minX: 0,
maxX: 0,
minY: 0,
maxY: 0,
})
// 根据多选元素整体在画布中的范围，计算边框线和缩放点的位置信息
const width = computed(() => (range.value.maxX - range.value.minX) * canvasScale.value)
const height = computed(() => (range.value.maxY - range.value.minY) * canvasScale.value)
const { resizeHandlers, borderLines } = useCommonOperate(width, height)
// 计算多选元素整体在画布中的范围
const setRange = () => {
const { minX, maxX, minY, maxY } = getElementListRange(localActiveElementList.value)
range.value = { minX, maxX, minY, maxY }
}
watchEffect(setRange)
// 禁用多选状态下缩放：仅未旋转的图片和形状可以在多选状态下缩放
const disableResize = computed(() => {
return localActiveElementList.value.some(item => {
if (
(item.type === 'image' || item.type === 'shape') &&
!item.rotate
) return false
return true
})
})
</script>
<style lang="scss" scoped>
.multi-select-operate {
position: absolute;
top: 0;
left: 0;
z-index: 101;
}
</style> |