|
| 1 | +"use client"; |
| 2 | + |
| 3 | +import LeftSidebar from "@/components/layout/left-sidebar"; |
| 4 | +import Navbar from "@/components/layout/navbar"; |
| 5 | +import RightSidebar from "@/components/layout/right-sidebar"; |
| 6 | +import Live from "@/components/live"; |
| 7 | +import { useEffect, useRef, useState } from "react"; |
| 8 | +import { fabric } from "fabric"; |
| 9 | +import { |
| 10 | + handleCanvasMouseDown, |
| 11 | + handleCanvasMouseUp, |
| 12 | + handleCanvasObjectModified, |
| 13 | + handleCanvasObjectScaling, |
| 14 | + handleCanvasSelectionCreated, |
| 15 | + handleCanvaseMouseMove, |
| 16 | + handlePathCreated, |
| 17 | + handleResize, |
| 18 | + initializeFabric, |
| 19 | + renderCanvas, |
| 20 | +} from "@/lib/canvas"; |
| 21 | +import type { ActiveElement, Attributes } from "@/types"; |
| 22 | +import { useMutation, useRedo, useStorage, useUndo } from "@/liveblocks.config"; |
| 23 | +import { defaultNavElement } from "@/constants"; |
| 24 | +import { handleDelete, handleKeyDown } from "@/lib/key-events"; |
| 25 | +import { handleImageUpload } from "@/lib/shapes"; |
| 26 | + |
| 27 | +export default function Home() { |
| 28 | + const undo = useUndo(); |
| 29 | + const redo = useRedo(); |
| 30 | + |
| 31 | + const canvasRef = useRef<HTMLCanvasElement>(null); |
| 32 | + const fabricRef = useRef<fabric.Canvas | null>(null); |
| 33 | + const isDrawing = useRef<boolean>(false); |
| 34 | + const shapeRef = useRef<fabric.Object | null>(null); |
| 35 | + const selectedShapeRef = useRef<string | null>(null); |
| 36 | + const activeObjectRef = useRef<fabric.Object | null>(null); |
| 37 | + const imageInputRef = useRef<HTMLInputElement | null>(null); |
| 38 | + const isEditingRef = useRef<boolean>(false); |
| 39 | + |
| 40 | + const canvasObjects = useStorage(root => root.canvasObjects); |
| 41 | + |
| 42 | + const [elementAttributes, setElementAttributes] = useState<Attributes>({ |
| 43 | + width: "", |
| 44 | + height: "", |
| 45 | + fontSize: "", |
| 46 | + fontFamily: "", |
| 47 | + fontWeight: "", |
| 48 | + fill: "#aabbcc", |
| 49 | + stroke: "#aabbcc", |
| 50 | + }); |
| 51 | + |
| 52 | + const syncShapeInStorage = useMutation(({ storage }, object) => { |
| 53 | + if (!object) return; |
| 54 | + |
| 55 | + const { objectId } = object; |
| 56 | + |
| 57 | + const shapeData = object.toJSON(); |
| 58 | + shapeData.objectId = objectId; |
| 59 | + |
| 60 | + const canvasObjects = storage.get("canvasObjects"); |
| 61 | + |
| 62 | + canvasObjects.set(objectId, shapeData); |
| 63 | + }, []); |
| 64 | + |
| 65 | + const [activeElement, setActiveElement] = useState<ActiveElement>({ |
| 66 | + name: "", |
| 67 | + value: "", |
| 68 | + icon: "", |
| 69 | + }); |
| 70 | + |
| 71 | + const deleteAllShapes = useMutation(({ storage }) => { |
| 72 | + const canvasObjects = storage.get("canvasObjects"); |
| 73 | + |
| 74 | + if (!canvasObjects || canvasObjects.size === 0) return true; |
| 75 | + |
| 76 | + const entries = Array.from(canvasObjects.entries()); |
| 77 | + |
| 78 | + for (const [key] of entries) { |
| 79 | + canvasObjects.delete(key); |
| 80 | + } |
| 81 | + |
| 82 | + return canvasObjects.size === 0; |
| 83 | + }, []); |
| 84 | + |
| 85 | + const deleteShapeFromStorage = useMutation(({ storage }, objectId) => { |
| 86 | + const canvasObjects = storage.get("canvasObjects"); |
| 87 | + |
| 88 | + if (!canvasObjects || canvasObjects.size === 0) return; |
| 89 | + |
| 90 | + canvasObjects.delete(objectId); |
| 91 | + }, []); |
| 92 | + |
| 93 | + const handleActiveElement = (elem: ActiveElement) => { |
| 94 | + setActiveElement(elem); |
| 95 | + |
| 96 | + switch (elem?.value) { |
| 97 | + case "reset": |
| 98 | + deleteAllShapes(); |
| 99 | + fabricRef.current?.clear(); |
| 100 | + setActiveElement(defaultNavElement); |
| 101 | + break; |
| 102 | + case "delete": |
| 103 | + handleDelete(fabricRef.current as any, deleteShapeFromStorage); |
| 104 | + setActiveElement(defaultNavElement); |
| 105 | + break; |
| 106 | + case "image": |
| 107 | + imageInputRef.current?.click(); |
| 108 | + isDrawing.current = false; |
| 109 | + |
| 110 | + if (fabricRef.current) { |
| 111 | + fabricRef.current.isDrawingMode = false; |
| 112 | + } |
| 113 | + break; |
| 114 | + default: |
| 115 | + break; |
| 116 | + } |
| 117 | + selectedShapeRef.current = elem?.value as string; |
| 118 | + }; |
| 119 | + |
| 120 | + useEffect(() => { |
| 121 | + const canvas = initializeFabric({ canvasRef, fabricRef }); |
| 122 | + |
| 123 | + canvas.on("mouse:down", (options: any) => { |
| 124 | + handleCanvasMouseDown({ |
| 125 | + options, |
| 126 | + canvas, |
| 127 | + isDrawing, |
| 128 | + shapeRef, |
| 129 | + selectedShapeRef, |
| 130 | + }); |
| 131 | + }); |
| 132 | + |
| 133 | + canvas.on("mouse:move", (options: any) => { |
| 134 | + handleCanvaseMouseMove({ |
| 135 | + options, |
| 136 | + canvas, |
| 137 | + isDrawing, |
| 138 | + shapeRef, |
| 139 | + selectedShapeRef, |
| 140 | + syncShapeInStorage, |
| 141 | + }); |
| 142 | + }); |
| 143 | + |
| 144 | + canvas.on("mouse:up", () => { |
| 145 | + handleCanvasMouseUp({ |
| 146 | + canvas, |
| 147 | + isDrawing, |
| 148 | + shapeRef, |
| 149 | + selectedShapeRef, |
| 150 | + syncShapeInStorage, |
| 151 | + setActiveElement, |
| 152 | + activeObjectRef, |
| 153 | + }); |
| 154 | + }); |
| 155 | + |
| 156 | + canvas.on("path:created", (options: any) => { |
| 157 | + handlePathCreated({ |
| 158 | + options, |
| 159 | + syncShapeInStorage, |
| 160 | + }); |
| 161 | + }); |
| 162 | + |
| 163 | + canvas.on("object:modified", (options: any) => { |
| 164 | + handleCanvasObjectModified({ |
| 165 | + options, |
| 166 | + syncShapeInStorage, |
| 167 | + }); |
| 168 | + }); |
| 169 | + |
| 170 | + canvas.on("object:scaling", (options: any) => { |
| 171 | + handleCanvasObjectScaling({ |
| 172 | + options, |
| 173 | + setElementAttributes, |
| 174 | + }); |
| 175 | + }); |
| 176 | + |
| 177 | + canvas.on("selection:created", (options: any) => { |
| 178 | + handleCanvasSelectionCreated({ |
| 179 | + options, |
| 180 | + isEditingRef, |
| 181 | + setElementAttributes, |
| 182 | + }); |
| 183 | + }); |
| 184 | + |
| 185 | + window.addEventListener("resize", () => { |
| 186 | + handleResize({ canvas: fabricRef.current as fabric.Canvas | any }); |
| 187 | + }); |
| 188 | + |
| 189 | + window.addEventListener("keydown", (e: any) => { |
| 190 | + handleKeyDown({ |
| 191 | + e, |
| 192 | + canvas: fabricRef.current as fabric.Canvas | any, |
| 193 | + undo, |
| 194 | + redo, |
| 195 | + syncShapeInStorage, |
| 196 | + deleteShapeFromStorage, |
| 197 | + }); |
| 198 | + }); |
| 199 | + |
| 200 | + return () => { |
| 201 | + canvas.dispose(); |
| 202 | + }; |
| 203 | + // eslint-disable-next-line react-hooks/exhaustive-deps |
| 204 | + }, []); |
| 205 | + |
| 206 | + useEffect(() => { |
| 207 | + renderCanvas({ |
| 208 | + fabricRef, |
| 209 | + canvasObjects, |
| 210 | + activeObjectRef, |
| 211 | + }); |
| 212 | + }, [canvasObjects]); |
| 213 | + |
| 214 | + return ( |
| 215 | + <main className="h-screen overflow-hidden"> |
| 216 | + <Navbar |
| 217 | + activeElement={activeElement} |
| 218 | + handleActiveElement={handleActiveElement} |
| 219 | + imageInputRef={imageInputRef} |
| 220 | + handleImageUpload={(e: any) => { |
| 221 | + e.stopPropagation(); |
| 222 | + |
| 223 | + handleImageUpload({ |
| 224 | + file: e.target.files[0], |
| 225 | + canvas: fabricRef as fabric.Canvas | any, |
| 226 | + shapeRef, |
| 227 | + syncShapeInStorage, |
| 228 | + }); |
| 229 | + }} |
| 230 | + /> |
| 231 | + |
| 232 | + <section className="flex h-full flex-row"> |
| 233 | + <LeftSidebar allShapes={Array.from(canvasObjects)} /> |
| 234 | + <Live canvasRef={canvasRef} undo={undo} redo={redo} /> |
| 235 | + <RightSidebar |
| 236 | + elementAttributes={elementAttributes} |
| 237 | + setElementAttributes={setElementAttributes} |
| 238 | + fabricRef={fabricRef} |
| 239 | + isEditingRef={isEditingRef} |
| 240 | + activeObjectRef={activeObjectRef} |
| 241 | + syncShapeInStorage={syncShapeInStorage} |
| 242 | + /> |
| 243 | + </section> |
| 244 | + </main> |
| 245 | + ); |
| 246 | +} |
0 commit comments