jeong-wonjin
2 years ago
parent
99179fa94d
commit
08313bcc1e
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<component name="InspectionProjectProfileManager">
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<profile version="1.0">
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<option name="myName" value="Project Default" />
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<inspection_tool class="Eslint" enabled="true" level="WARNING" enabled_by_default="true" />
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</profile>
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</component>
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="VcsDirectoryMappings">
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<mapping directory="$PROJECT_DIR$" vcs="Git" />
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</component>
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</project>
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import React from 'react';
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import logo from './logo.svg';
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import React, {useState} from 'react';
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import './App.css';
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import {PDFViewer} from "./PDFViewer/PDFViewer";
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import DrawingCanvas from "./DrawingCanvas";
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function App() {
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return (
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<div className="App">
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<header className="App-header">
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<img src={logo} className="App-logo" alt="logo" />
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<p>
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Edit <code>src/App.tsx</code> and save to reload.
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</p>
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<a
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className="App-link"
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href="https://reactjs.org"
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target="_blank"
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rel="noopener noreferrer"
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>
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Learn React
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</a>
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</header>
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</div>
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);
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/*
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return (
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<DrawingCanvas/>
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);
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*/
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return (
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<PDFViewer fileUrl="./test3.pdf" scale={1.5} renderText={true} waterMarkText="yaguboo-이정민 2023-10-04 15:10:00"/>
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);
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}
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export default App;
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import React, { useRef, useState } from 'react';
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type Point = {
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x: number;
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y: number;
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};
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type Drawing = {
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path: Path2D;
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offset: Point;
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};
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const DrawingCanvas: React.FC = () => {
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const canvasRef = useRef<HTMLCanvasElement>(null);
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const [isDrawing, setIsDrawing] = useState(false);
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const [drawings, setDrawings] = useState<Drawing[]>([]);
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const [currentPath, setCurrentPath] = useState<Path2D | null>(null);
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const [drawMode, setDrawMode] = useState(true); // true for drawing, false for selecting
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const [selectMode, setSelectMode] = useState(false);
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const [selectMode2, setSelectMode2] = useState(false);
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const [selectionStart, setSelectionStart] = useState<Point | null>(null);
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const [selectedArea, setSelectedArea] = useState<{ start: Point; end: Point } | null>(null);
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const [selectedDrawings, setSelectedDrawings] = useState<number[]>([]);
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const [mousePos, setMousePos] = useState<Point>();
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const [dragStartPoint, setDragStartPoint] = useState<Point | null>(null);
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const handleTouchStart = (e: React.TouchEvent) => {
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handleMouseDown({
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clientX: e.touches[0].clientX,
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clientY: e.touches[0].clientY,
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} as any);
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};
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const handleTouchMove = (e: React.TouchEvent) => {
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handleMouseMove({
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clientX: e.touches[0].clientX,
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clientY: e.touches[0].clientY,
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} as any);
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};
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const handleTouchEnd = (e: React.TouchEvent) => {
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handleMouseUp({
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clientX: e.changedTouches[0].clientX,
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clientY: e.changedTouches[0].clientY,
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} as any);
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};
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const getCanvasRelativePosition = (e: React.MouseEvent): Point => {
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if (!canvasRef.current) return { x: 0, y: 0 };
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const rect = canvasRef.current.getBoundingClientRect();
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return {
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x: e.clientX - rect.left,
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y: e.clientY - rect.top,
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};
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};
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const redraw = () => {
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if (!canvasRef.current) return;
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const ctx = canvasRef.current.getContext('2d');
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if (ctx) {
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ctx.clearRect(0, 0, canvasRef.current.width, canvasRef.current.height);
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ctx.save();
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drawings.forEach((drawing) => {
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ctx.translate(drawing.offset.x, drawing.offset.y);
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ctx.strokeStyle = 'black';
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ctx.lineWidth = 1;
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ctx.stroke(drawing.path);
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ctx.setTransform(1, 0, 0, 1, 0, 0);
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});
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ctx.restore();
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// 선택 영역이 있으면 항상 그려줍니다.
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if (selectedArea) {
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drawSelectionArea(selectedArea.start, selectedArea.end);
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}
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}
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};
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const handleMouseDown = (e: React.MouseEvent) => {
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const point = getCanvasRelativePosition(e);
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setMousePos(point);
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if (drawMode) {
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setIsDrawing(true);
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const newPath = new Path2D();
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newPath.moveTo(point.x, point.y);
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setCurrentPath(newPath);
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return;
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}
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if (selectMode) {
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if (selectedArea && isPointInsideRect(point, selectedArea)) {
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setDragStartPoint(point);
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return;
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} else {
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setSelectedDrawings([]);
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setDragStartPoint(null);
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setSelectedArea({ start: point, end: point } );
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setSelectionStart(point);
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console.log("out");
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return;
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}
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}
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};
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const handleMouseMove = (e: React.MouseEvent) => {
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const point = getCanvasRelativePosition(e);
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if (drawMode && isDrawing && currentPath) {
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currentPath.lineTo(point.x, point.y);
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const ctx = canvasRef.current?.getContext('2d');
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ctx?.stroke(currentPath);
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return;
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}
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if (selectMode && selectionStart && !dragStartPoint) {
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const normalizedArea = normalizeSelectionArea(selectionStart, point);
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setSelectedArea(normalizedArea);
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redraw();
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drawSelectionArea(normalizedArea.start, normalizedArea.end);
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return;
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}
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if (selectedDrawings.length && mousePos && dragStartPoint) {
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const dx = point.x - mousePos.x;
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const dy = point.y - mousePos.y;
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const newDrawings = [...drawings];
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for (let index of selectedDrawings) {
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newDrawings[index].offset.x += dx;
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newDrawings[index].offset.y += dy;
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}
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if (selectedArea) {
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selectedArea.start.x += dx;
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selectedArea.start.y += dy;
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selectedArea.end.x += dx;
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selectedArea.end.y += dy;
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}
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setDrawings(newDrawings);
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setMousePos(point);
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redraw();
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if (selectedArea) {
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drawSelectionArea(selectedArea.start, selectedArea.end);
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}
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return;
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}
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};
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const isPointInsideRect = (point: Point, rect: { start: Point; end: Point }): boolean => {
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return (
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point.x >= rect.start.x &&
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point.x <= rect.end.x &&
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point.y >= rect.start.y &&
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point.y <= rect.end.y
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);
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};
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const handleMouseUp = (e: React.MouseEvent) => {
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if (drawMode) {
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setIsDrawing(false);
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if (currentPath) {
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setDrawings([...drawings, { path: currentPath, offset: { x: 0, y: 0 } }]);
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setCurrentPath(null);
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}
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return;
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}
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if (selectMode && selectionStart) {
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if (selectedArea) {
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const normalizedArea = selectedArea;
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const selected = drawings.map((drawing, index) =>
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isDrawingInsideSelection(drawing, normalizedArea) ? index : -1
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).filter(index => index !== -1);
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setSelectedDrawings(selected);
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redraw();
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if (selected.length === 0) {
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setSelectedArea(null);
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}
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}
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setSelectionStart(null);
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setDragStartPoint(null);
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return;
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}
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setDragStartPoint(null);
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};
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const isDrawingInsideSelection = (drawing: Drawing, selection: { start: Point; end: Point }): boolean => {
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const ctx = canvasRef.current?.getContext('2d');
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if (!ctx) return false;
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const { start, end } = selection;
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for (let x = start.x; x <= end.x; x += 5) {
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for (let y = start.y; y <= end.y; y += 5) {
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if (ctx.isPointInPath(drawing.path, x - drawing.offset.x, y - drawing.offset.y)) {
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return true;
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}
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}
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}
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return false;
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};
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const normalizeSelectionArea = (start: Point, end: Point): { start: Point; end: Point } => {
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return {
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start: {
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x: Math.min(start.x, end.x),
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y: Math.min(start.y, end.y)
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},
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end: {
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x: Math.max(start.x, end.x),
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y: Math.max(start.y, end.y)
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}
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};
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};
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const drawSelectionArea = (start: Point, end: Point) => {
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if (!canvasRef.current) return;
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const ctx = canvasRef.current.getContext('2d');
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if (ctx) {
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ctx.setLineDash([5, 5]);
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ctx.strokeStyle = 'blue';
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ctx.strokeRect(start.x, start.y, end.x - start.x, end.y - start.y);
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ctx.setLineDash([]);
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}
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};
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return (
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<div>
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<button onClick={() => {
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setDrawMode(!drawMode);
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setSelectMode(false);
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}}>
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{drawMode ? 'Draw Mode: ON' : 'Draw Mode: OFF'}
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</button>
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<button onClick={() => {
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setSelectMode(!selectMode);
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setDrawMode(false);
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}}>
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{selectMode ? 'Select Mode: ON' : 'Select Mode: OFF'}
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</button>
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<button onClick={() => {
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setSelectMode2(!selectMode2);
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setDrawMode(false);
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setSelectMode(false);
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}}>
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{selectMode2 ? 'Select Mode 2: ON' : 'Select Mode 2: OFF'}
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</button>
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<br/>
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<canvas
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ref={canvasRef}
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width={800}
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height={600}
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style={{ border: '1px solid black' }}
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onMouseDown={handleMouseDown}
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onMouseMove={handleMouseMove}
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onMouseUp={handleMouseUp}
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onTouchStart={handleTouchStart}
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onTouchMove={handleTouchMove}
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onTouchEnd={handleTouchEnd}
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/>
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</div>
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);
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};
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export default DrawingCanvas;
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.textLayer
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{
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position: absolute;
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text-align: initial;
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inset: 0;
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overflow: hidden;
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color: rgba(255,255, 0, 1.0);
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line-height: 1;
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-webkit-text-size-adjust: none;
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-moz-text-size-adjust: none;
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text-size-adjust: none;
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forced-color-adjust: none;
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transform-origin: 0 0;
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z-index: 99;
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}
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.textLayer span
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{
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position: absolute;
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}
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.pageLayer
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{
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position: relative;
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direction: ltr;
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margin: var(--page-margin);
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overflow: visible;
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border: var(--page-border);
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background-clip: content-box;
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background-color: rgba(255, 255, 255, 1);
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padding-bottom: 17px;
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}
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.pdfViewer
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{
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display: flex;
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flex-direction: column;
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justify-content: center;
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align-items: center;
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text-align: center;
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padding-top: 17px;
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}
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.pdfViewer .canvasWrapper
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{
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position: relative;
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overflow: hidden;
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width: 100%;
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height: 100%;
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z-index: 1;
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justify-content: center;
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box-shadow: 5px 5px 15px 5px #888888;
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}
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.loading
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{
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width: 100px;
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height: 100px;
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}
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.drawLayer
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{
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position: absolute;
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width: 100%;
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height: 100%;
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overflow: hidden;
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z-index: 2;
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background-color:transparent;
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}
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.waterMarkLayer
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{
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background-color:transparent;
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}
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.pdfViewer .pageLayer :is(span, br) {
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color: transparent;
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position: absolute;
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white-space: pre;
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cursor: text;
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transform-origin: 0% 0%;
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}
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.loading_canvasWrapper {
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position: relative;
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display: flex;
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justify-content: center;
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align-items: center;
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text-align: center;
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width: 100%;
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box-shadow: 5px 5px 15px 5px #888888;
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}
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.loading {
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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display: flex;
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justify-content: center;
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align-items: center;
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width: 100%;
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height: 100%;
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background-color: rgba(255, 255, 255, 0.8); /* semi-transparent white background */
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}
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.loading img {
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max-width: 100%;
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max-height: 100%;
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}
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#printFrame
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{
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width: 0px;
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height: 0px;
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display: none;
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}
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Reference in new issue