100 lines
3.0 KiB
TypeScript
100 lines
3.0 KiB
TypeScript
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import { useSearchParams } from '@remix-run/react';
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import { useState, useEffect, MouseEvent, useRef } from 'react';
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interface DraggableBoxProps {
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tag: string;
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initialX: number;
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initialY: number;
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className?: string;
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children?: React.ReactNode;
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}
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const DraggableBox = ({
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tag,
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initialX,
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initialY,
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className = "",
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children = ""
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}: DraggableBoxProps) => {
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const [isDragging, setIsDragging] = useState(false);
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const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 });
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const [searchParams, setSearchParams] = useSearchParams();
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const dragRef = useRef<HTMLDivElement>(null);
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const xParam = `x${tag}`;
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const yParam = `y${tag}`;
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useEffect(() => {
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if (!searchParams.has(xParam) || !searchParams.has(yParam)) {
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const newParams = new URLSearchParams(searchParams);
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newParams.set(xParam, initialX.toString());
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newParams.set(yParam, initialY.toString());
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setSearchParams(newParams, { replace: true });
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}
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if (!isDragging) return;
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const handleMouseMove = (e: globalThis.MouseEvent) => {
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if (!dragRef.current?.parentElement) return;
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const parent = dragRef.current.parentElement;
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const parentRect = parent.getBoundingClientRect();
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const boxRect = dragRef.current.getBoundingClientRect();
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const relativeX = e.clientX - parentRect.left - dragOffset.x;
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const relativeY = e.clientY - parentRect.top - dragOffset.y;
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const maxX = parentRect.width - boxRect.width;
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const maxY = parentRect.height - boxRect.height;
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const newX = Math.max(0, Math.min(relativeX, maxX));
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const newY = Math.max(0, Math.min(relativeY, maxY));
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const newParams = new URLSearchParams(searchParams);
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newParams.set(xParam, newX.toString());
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newParams.set(yParam, newY.toString());
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setSearchParams(newParams, { replace: true });
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};
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const handleMouseUp = () => setIsDragging(false);
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window.addEventListener('mousemove', handleMouseMove);
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window.addEventListener('mouseup', handleMouseUp);
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return () => {
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window.removeEventListener('mousemove', handleMouseMove);
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window.removeEventListener('mouseup', handleMouseUp);
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};
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}, [isDragging, dragOffset, tag, searchParams, initialX, initialY]);
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const handleMouseDown = (e: MouseEvent) => {
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if (!dragRef.current?.parentElement) return;
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const parentRect = dragRef.current.parentElement.getBoundingClientRect();
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const currentX = parseInt(searchParams.get(xParam) || '0');
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const currentY = parseInt(searchParams.get(yParam) || '0');
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setDragOffset({
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x: e.clientX - parentRect.left - currentX,
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y: e.clientY - parentRect.top - currentY
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});
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setIsDragging(true);
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};
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return (
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<div
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ref={dragRef}
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className={`absolute cursor-move bg-red-500 rounded-full w-4 h-4 text-white shadow-lg ${className}`}
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style={{
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transform: `translate(${searchParams.get(xParam) || 0}px, ${searchParams.get(yParam) || 0}px)`,
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userSelect: 'none',
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}}
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onMouseDown={handleMouseDown}
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>
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{children}
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</div>
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);
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};
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export default DraggableBox;
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