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6.9 KiB
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1 line
6.9 KiB
Plaintext
{"version":3,"file":"index.mjs","sources":["../../../../../packages/hooks/use-draggable/index.ts"],"sourcesContent":["import { onBeforeUnmount, onMounted, ref, watchEffect } from 'vue'\nimport { addUnit } from '@element-plus/utils'\n\nimport type { ComputedRef, Ref } from 'vue'\n\nexport const useDraggable = (\n targetRef: Ref<HTMLElement | undefined>,\n dragRef: Ref<HTMLElement | undefined>,\n draggable: ComputedRef<boolean>,\n overflow?: ComputedRef<boolean>\n) => {\n const transform = {\n offsetX: 0,\n offsetY: 0,\n }\n\n const isDragging = ref(false)\n\n const adjustPosition = (moveX: number, moveY: number) => {\n if (targetRef.value) {\n const { offsetX, offsetY } = transform\n const targetRect = targetRef.value.getBoundingClientRect()\n const targetLeft = targetRect.left\n const targetTop = targetRect.top\n const targetWidth = targetRect.width\n const targetHeight = targetRect.height\n\n const clientWidth = document.documentElement.clientWidth\n const clientHeight = document.documentElement.clientHeight\n\n const minLeft = -targetLeft + offsetX\n const minTop = -targetTop + offsetY\n const maxLeft = clientWidth - targetLeft - targetWidth + offsetX\n const maxTop =\n clientHeight -\n targetTop -\n (targetHeight < clientHeight ? targetHeight : 0) +\n offsetY\n\n if (!overflow?.value) {\n moveX = Math.min(Math.max(moveX, minLeft), maxLeft)\n moveY = Math.min(Math.max(moveY, minTop), maxTop)\n }\n\n transform.offsetX = moveX\n transform.offsetY = moveY\n\n targetRef.value.style.transform = `translate(${addUnit(moveX)}, ${addUnit(\n moveY\n )})`\n }\n }\n\n const onMousedown = (e: MouseEvent) => {\n const downX = e.clientX\n const downY = e.clientY\n const { offsetX, offsetY } = transform\n\n const onMousemove = (e: MouseEvent) => {\n if (!isDragging.value) {\n isDragging.value = true\n }\n const moveX = offsetX + e.clientX - downX\n const moveY = offsetY + e.clientY - downY\n\n adjustPosition(moveX, moveY)\n }\n\n const onMouseup = () => {\n isDragging.value = false\n document.removeEventListener('mousemove', onMousemove)\n document.removeEventListener('mouseup', onMouseup)\n }\n\n document.addEventListener('mousemove', onMousemove)\n document.addEventListener('mouseup', onMouseup)\n }\n\n const onDraggable = () => {\n if (dragRef.value && targetRef.value) {\n dragRef.value.addEventListener('mousedown', onMousedown)\n window.addEventListener('resize', updatePosition)\n }\n }\n\n const offDraggable = () => {\n if (dragRef.value && targetRef.value) {\n dragRef.value.removeEventListener('mousedown', onMousedown)\n window.removeEventListener('resize', updatePosition)\n }\n }\n\n const resetPosition = () => {\n transform.offsetX = 0\n transform.offsetY = 0\n\n if (targetRef.value) {\n targetRef.value.style.transform = ''\n }\n }\n\n const updatePosition = () => {\n const { offsetX, offsetY } = transform\n\n adjustPosition(offsetX, offsetY)\n }\n\n onMounted(() => {\n watchEffect(() => {\n if (draggable.value) {\n onDraggable()\n } else {\n offDraggable()\n }\n })\n })\n\n onBeforeUnmount(() => {\n offDraggable()\n })\n\n return {\n isDragging,\n resetPosition,\n updatePosition,\n 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