|
| 1 | +import React, { useState, useCallback } from 'react'; |
| 2 | +import { Size } from '@/core/model'; |
| 3 | +import { UpdatePositionFn, UpdatePositionItemInfo } from '@/core/providers'; |
| 4 | +import { setOffSetZoomToCoords } from '@/common/helpers/set-off-set-zoom-to-coords.helper'; |
| 5 | + |
| 6 | +export const useDraggable = ( |
| 7 | + id: string, |
| 8 | + initialX: number, |
| 9 | + initialY: number, |
| 10 | + updatePosition: UpdatePositionFn, |
| 11 | + totalHeight: number, |
| 12 | + canvasSize: Size, |
| 13 | + viewBoxSize: Size, |
| 14 | + zoomFactor: number |
| 15 | +) => { |
| 16 | + const [isDragging, setIsDragging] = useState(false); |
| 17 | + const [startDragPosition, setStartDragPosition] = useState({ x: 0, y: 0 }); |
| 18 | + const [finalInfoAfterDrag, setFinalInfoAfterDrag] = |
| 19 | + useState<UpdatePositionItemInfo | null>(null); |
| 20 | + const [node, setNode] = React.useState<SVGElement | null>(null); |
| 21 | + const ref = React.useCallback((nodeEle: SVGElement): void => { |
| 22 | + setNode(nodeEle); |
| 23 | + }, []); |
| 24 | + |
| 25 | + const startDrag = (x: number, y: number) => { |
| 26 | + const { x: offsetX, y: offsetY } = setOffSetZoomToCoords( |
| 27 | + x, |
| 28 | + y, |
| 29 | + viewBoxSize, |
| 30 | + canvasSize, |
| 31 | + zoomFactor |
| 32 | + ); |
| 33 | + setStartDragPosition({ |
| 34 | + x: offsetX - initialX, |
| 35 | + y: offsetY - initialY, |
| 36 | + }); |
| 37 | + setIsDragging(true); |
| 38 | + }; |
| 39 | + |
| 40 | + const onMouseDown = useCallback( |
| 41 | + (event: React.MouseEvent) => { |
| 42 | + startDrag(event.clientX, event.clientY); |
| 43 | + }, |
| 44 | + [initialX, initialY, viewBoxSize] |
| 45 | + ); |
| 46 | + |
| 47 | + const onTouchStart = useCallback( |
| 48 | + (event: React.TouchEvent) => { |
| 49 | + event.preventDefault(); |
| 50 | + const touch = event.touches[0]; |
| 51 | + startDrag(touch.clientX, touch.clientY); |
| 52 | + }, |
| 53 | + [initialX, initialY, viewBoxSize] |
| 54 | + ); |
| 55 | + |
| 56 | + const updateDrag = (x: number, y: number) => { |
| 57 | + if (isDragging) { |
| 58 | + const { x: offsetX, y: offsetY } = setOffSetZoomToCoords( |
| 59 | + x, |
| 60 | + y, |
| 61 | + viewBoxSize, |
| 62 | + canvasSize, |
| 63 | + zoomFactor |
| 64 | + ); |
| 65 | + const newPosition = { |
| 66 | + id, |
| 67 | + position: { |
| 68 | + x: offsetX - startDragPosition.x, |
| 69 | + y: offsetY - startDragPosition.y, |
| 70 | + }, |
| 71 | + totalHeight, |
| 72 | + canvasSize, |
| 73 | + }; |
| 74 | + |
| 75 | + updatePosition(newPosition, false); |
| 76 | + setFinalInfoAfterDrag(newPosition); |
| 77 | + } |
| 78 | + }; |
| 79 | + |
| 80 | + const onMouseMove = useCallback( |
| 81 | + (event: MouseEvent) => { |
| 82 | + updateDrag(event.clientX, event.clientY); |
| 83 | + }, |
| 84 | + [id, isDragging, startDragPosition, updatePosition, totalHeight, canvasSize] |
| 85 | + ); |
| 86 | + |
| 87 | + const onTouchMove = useCallback( |
| 88 | + (event: TouchEvent) => { |
| 89 | + event.preventDefault(); |
| 90 | + const touch = event.touches[0]; |
| 91 | + updateDrag(touch.clientX, touch.clientY); |
| 92 | + }, |
| 93 | + [id, isDragging, startDragPosition, updatePosition, totalHeight, canvasSize] |
| 94 | + ); |
| 95 | + |
| 96 | + const endDrag = useCallback(() => { |
| 97 | + setIsDragging(false); |
| 98 | + if (finalInfoAfterDrag) { |
| 99 | + updatePosition(finalInfoAfterDrag, true); |
| 100 | + } |
| 101 | + }, [finalInfoAfterDrag, updatePosition]); |
| 102 | + |
| 103 | + React.useEffect(() => { |
| 104 | + if (!node) return; |
| 105 | + if (isDragging) { |
| 106 | + window.addEventListener('mousemove', onMouseMove); |
| 107 | + window.addEventListener('mouseup', endDrag); |
| 108 | + node.addEventListener('touchmove', onTouchMove); |
| 109 | + node.addEventListener('touchend', endDrag); |
| 110 | + } else { |
| 111 | + window.removeEventListener('mousemove', onMouseMove); |
| 112 | + window.removeEventListener('mouseup', endDrag); |
| 113 | + node.removeEventListener('touchmove', onTouchMove); |
| 114 | + node.removeEventListener('touchend', endDrag); |
| 115 | + } |
| 116 | + |
| 117 | + return () => { |
| 118 | + window.removeEventListener('mousemove', onMouseMove); |
| 119 | + window.removeEventListener('mouseup', endDrag); |
| 120 | + node.removeEventListener('touchmove', onTouchMove); |
| 121 | + node.removeEventListener('touchend', endDrag); |
| 122 | + }; |
| 123 | + }, [isDragging, onMouseMove, onTouchMove, endDrag]); |
| 124 | + |
| 125 | + return { onMouseDown, onTouchStart, ref }; |
| 126 | +}; |
0 commit comments