842 lines
26 KiB
JavaScript
842 lines
26 KiB
JavaScript
import {
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createLayer,
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findInChildLayers,
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LayerType,
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} from "../utils/layerHelper.js";
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import { createRasterizedImage } from "../utils/selectionToImage.js";
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import { CompositeCommand, Command } from "./Command.js";
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import { CreateImageLayerCommand } from "./LayerCommands.js";
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import { fabric } from "fabric-with-all";
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import { generateId } from "../utils/helper.js";
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import { ClearSelectionCommand } from "./LassoCutoutCommand.js";
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import { ClearSelectionContentCommand } from "./ClearSelectionContentCommand.js";
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import i18n from "@/lang/index.ts";
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const { t } = i18n.global;
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/**
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* 剪切选区到新图层命令
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* 实现将选区内容复制到新图层，并将复制的选区作为组的遮罩
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*/
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export class CutSelectionToNewLayerCommand extends CompositeCommand {
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constructor(options = {}) {
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super([], {
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name: "套索抠图",
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description: "将选区抠图到新图层",
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});
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this.canvas = options.canvas;
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this.layerManager = options.layerManager;
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this.selectionManager = options.selectionManager;
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this.toolManager = options.toolManager;
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this.sourceLayerId = options.sourceLayerId;
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this.newLayerName = options.newLayerName || "抠图";
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this.newLayerId = null;
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this.cutoutImageUrl = null;
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this.fabricImage = null;
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this.executedCommands = [];
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// 高清截图选项
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this.highResolutionEnabled = options.highResolutionEnabled !== false; // 默认启用
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this.baseResolutionScale = options.baseResolutionScale || 2; // 基础分辨率倍数
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this.groupId = options.groupId || generateId("lasso-copy-group-");
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this.groupName = options.groupName || t(`Canvas.ConstituencyGroup`);
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this.groupLayer = null; // 新增：保存组图层的引用
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this.originalLayersLength = 0; // 新增：保存原始图层数量
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this.clippingMaskId = generateId("clipping-mask-");
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// 在初始化时克隆保存选区对象，避免撤销后重做时获取不到选区对象
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this._clonedSelectionObject = null;
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this._initializeClonedSelection();
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}
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/**
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* 初始化克隆的选区对象
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* @private
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*/
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async _initializeClonedSelection() {
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if (this.selectionManager) {
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const selectionObject = this.selectionManager.getSelectionObject();
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if (selectionObject) {
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try {
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this._clonedSelectionObject = await this._cloneObject(
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selectionObject
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);
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console.log("套索抠图：选区对象已克隆保存");
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} catch (error) {
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console.error("套索抠图：克隆选区对象失败:", error);
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// 备用方案：序列化保存
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this.serializedSelectionObject = selectionObject.toObject([
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"id",
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"layerId",
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"layerName",
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"parentId",
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]);
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}
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}
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}
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}
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async execute() {
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if (!this.canvas || !this.layerManager || !this.selectionManager) {
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console.error("无法执行套索抠图：参数无效");
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return false;
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}
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try {
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this.executedCommands = [];
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// 保存原始图层数量，用于撤销时的验证
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this.originalLayersLength = this.layerManager.layers.value.length;
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// 获取选区：优先使用克隆的选区对象
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const selectionObject = await this._getSelectionObject();
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if (!selectionObject) {
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console.error("无法执行套索抠图：当前没有选区");
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return false;
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}
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// 确定源图层
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const sourceLayer = this.layerManager.getActiveLayer();
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if (!sourceLayer) {
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console.error("无法执行套索抠图：源图层无效");
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return false;
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}
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// 获取源图层的所有对象（包括子图层）
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const sourceObjects = this._getLayerObjects(sourceLayer);
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if (sourceObjects.length === 0) {
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console.error("无法执行套索抠图：源图层没有可见对象");
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return false;
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}
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const clippingMask = fabric.util.object.clone(selectionObject);
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clippingMask.set({
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id: this.clippingMaskId,
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selectable: false,
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evented: false,
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hasControls: false,
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// layerId: this.groupId,
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visible: true,
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});
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// 获取选区边界信息用于后续定位
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const selectionBounds = selectionObject.getBoundingRect(true, true);
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// 使用createRasterizedImage执行抠图操作
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// this.cutoutImageUrl = await this._performCutoutWithRasterized(
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// sourceObjects,
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// selectionObject,
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// selectionBounds
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// );
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// if (!this.cutoutImageUrl) {
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// console.error("抠图失败");
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// return false;
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// }
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this.fabricImage = await this._performCutoutWithRasterized(
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sourceObjects,
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selectionObject,
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selectionBounds
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);
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// // 创建fabric图像对象，传递选区边界信息
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// this.fabricImage = await this._createFabricImage(
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// this.cutoutImageUrl,
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// selectionBounds
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// );
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if (!this.fabricImage) {
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console.error("创建图像对象失败");
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return false;
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}
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// 1. 创建图像图层命令
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const createImageLayerCmd = new CreateImageLayerCommand({
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layerManager: this.layerManager,
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fabricImage: this.fabricImage,
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toolManager: this.toolManager,
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layerName: this.newLayerName,
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});
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// 执行创建图像图层命令
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const result = await createImageLayerCmd.execute();
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this.newLayerId = createImageLayerCmd.newLayerId;
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this.executedCommands.push(createImageLayerCmd);
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// 2. 清除选区命令
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const clearSelectionCmd = new ClearSelectionCommand({
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canvas: this.canvas,
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selectionManager: this.selectionManager,
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});
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// 执行清除选区命令
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await clearSelectionCmd.execute();
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this.executedCommands.push(clearSelectionCmd);
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const topLayerIndex = this.layerManager.layers.value.findIndex(
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(layer) => layer.id === this.newLayerId
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);
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const selectLayer = this.layerManager.layers.value[topLayerIndex];
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// 创建新的组图层
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this.groupLayer = createLayer({
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id: this.groupId,
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name: this.groupName || t(`Canvas.ConstituencyGroup`),
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type: LayerType.GROUP,
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visible: true,
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locked: false,
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opacity: 1.0,
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fabricObjects: [],
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children: [],
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});
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this.fabricImage.set({
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selectable: true,
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evented: true,
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});
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selectLayer.parentId = this.groupId; // 设置新图层的parentId为组图层ID
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selectLayer.fabricObjects = [
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this.fabricImage.toObject("id", "layerId", "layerName", "parentId"),
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];
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this.groupLayer.clippingMask = clippingMask.toObject(["id", "layerId"]); // 设置组图层的fabricObject为遮罩图像
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this.groupLayer.children.push(selectLayer);
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selectionObject.set({
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id: generateId("selectionObject-"),
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customType: "selectionObject",
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});
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this.groupLayer.selectObject = selectionObject.toObject([
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"id",
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"customType",
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]);
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// 插入新组图层
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this.layerManager.layers.value.splice(topLayerIndex, 1, this.groupLayer);
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this.canvas.discardActiveObject();
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this.canvas.setActiveObject(this.fabricImage);
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await this.layerManager.updateLayersObjectsInteractivity(true);
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console.log(`套索抠图完成，新图层ID: ${this.newLayerId}`);
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return {
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newLayerId: this.newLayerId,
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cutoutImageUrl: this.cutoutImageUrl,
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guroupId: this.groupId,
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groupName: this.groupName,
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};
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} catch (error) {
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console.error("套索抠图过程中出错:", error);
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// 如果已经创建了新图层，需要进行清理
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if (this.newLayerId) {
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try {
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await this.layerManager.removeLayer(this.newLayerId);
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} catch (cleanupError) {
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console.warn("清理新图层失败:", cleanupError);
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}
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}
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// 清理组图层（如果已创建）
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if (this.groupLayer && this.groupId) {
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try {
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const groupIndex = this.layerManager.layers.value.findIndex(
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(layer) => layer.id === this.groupId
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);
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if (groupIndex !== -1) {
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this.layerManager.layers.value.splice(groupIndex, 1);
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console.log(`清理了异常创建的组图层: ${this.groupId}`);
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}
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this.groupLayer = null;
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} catch (cleanupError) {
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console.warn("清理组图层失败:", cleanupError);
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}
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}
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// 尝试回滚已执行的命令
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if (this.executedCommands.length > 0) {
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try {
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for (let i = this.executedCommands.length - 1; i >= 0; i--) {
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const command = this.executedCommands[i];
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if (command && typeof command.undo === "function") {
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await command.undo();
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}
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}
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this.executedCommands = [];
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} catch (rollbackError) {
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console.warn("回滚已执行命令失败:", rollbackError);
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}
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}
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throw error;
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}
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}
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async undo() {
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try {
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console.log(`↩️ 开始撤销套索抠图操作`);
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// 1. 首先移除组图层（如果存在）
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if (this.groupId) {
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const groupIndex = this.layerManager.layers.value.findIndex(
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(layer) => layer.id === this.groupId
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);
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if (groupIndex !== -1) {
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console.log(`↩️ 移除组图层: ${this.groupId}`);
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// 从图层列表中移除组图层
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this.layerManager.layers.value.splice(groupIndex, 1);
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}
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}
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if (this.fabricImage) {
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console.log(`↩️ 移除抠图图像: ${this.fabricImage.id}`);
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// 从画布中移除抠图图像
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this.canvas.remove(this.fabricImage);
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}
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// 2. 逆序撤销所有已执行的子命令
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for (let i = this.executedCommands.length - 1; i >= 0; i--) {
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const command = this.executedCommands[i];
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if (command && typeof command.undo === "function") {
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try {
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console.log(`↩️ 撤销子命令: ${command.constructor.name}`);
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await command.undo();
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console.log(`✅ 子命令撤销成功: ${command.constructor.name}`);
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} catch (error) {
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console.error(
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`❌ 子命令撤销失败: ${command.constructor.name}`,
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error
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);
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// 子命令撤销失败不中断整个撤销过程
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}
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}
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}
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// 3. 清理状态
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this.executedCommands = [];
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this.newLayerId = null;
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this.cutoutImageUrl = null;
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this.fabricImage = null;
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this.groupLayer = null; // 清理组图层引用
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// 注意：不重置groupId，因为重做时可能需要使用相同的ID
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// 4. 更新画布和图层交互性
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await this.layerManager.updateLayersObjectsInteractivity(true);
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console.log(`✅ 套索抠图撤销完成`);
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return true;
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} catch (error) {
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console.error("❌ 撤销套索抠图失败:", error);
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return false;
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}
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}
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/**
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* 获取命令信息
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* @returns {Object} 命令详细信息
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*/
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getInfo() {
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return {
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name: this.name,
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description: this.description,
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newLayerId: this.newLayerId,
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newLayerName: this.newLayerName,
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groupId: this.groupId,
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groupName: this.groupName,
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executedCommandsCount: this.executedCommands.length,
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hasGroupLayer: !!this.groupLayer,
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sourceLayerId: this.sourceLayerId,
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highResolutionEnabled: this.highResolutionEnabled,
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baseResolutionScale: this.baseResolutionScale,
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hasSerializedSelection: !!this.serializedSelectionObject,
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selectionType: this.serializedSelectionObject?.type || null,
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subCommands: this.executedCommands.map((cmd) => ({
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name: cmd.constructor.name,
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info: cmd.getInfo ? cmd.getInfo() : {},
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})),
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};
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}
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/**
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* 获取图层的所有对象（包括子图层，从画布中查找真实对象）
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* @param {Object} layer 图层对象
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* @returns {Array} 真实的fabric对象数组
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* @private
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*/
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_getLayerObjects(layer) {
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const objects = [];
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const canvasObjects = this.canvas.getObjects();
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// 递归获取图层及其子图层的所有对象
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const collectLayerObjects = (currentLayer) => {
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// 处理图层的fabricObjects
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if (
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currentLayer.fabricObjects &&
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Array.isArray(currentLayer.fabricObjects)
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) {
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currentLayer.fabricObjects.forEach((fabricRef) => {
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if (fabricRef && fabricRef.id) {
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// 从画布中查找真实的对象
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const realObject = canvasObjects.find(
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(obj) => obj.id === fabricRef.id
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);
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if (realObject && realObject.visible) {
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objects.push(realObject);
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}
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}
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});
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}
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// 处理单个fabricObject（背景图层等）
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if (currentLayer.fabricObject && currentLayer.fabricObject.id) {
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const realObject = canvasObjects.find(
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(obj) => obj.id === currentLayer.fabricObject.id
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);
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if (realObject && realObject.visible) {
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objects.push(realObject);
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}
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}
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// 递归处理子图层
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if (currentLayer.children && Array.isArray(currentLayer.children)) {
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currentLayer.children.forEach((childLayer) => {
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if (childLayer.visible !== false) {
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// 只处理可见的子图层
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collectLayerObjects(childLayer);
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}
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});
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}
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};
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collectLayerObjects(layer);
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console.log(`从图层 "${layer.name}" 收集到 ${objects.length} 个可见对象`);
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return objects;
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}
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/**
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* 使用createRasterizedImage执行抠图操作
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* @param {Array} sourceObjects 源对象数组
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* @param {Object} selectionObject 选区对象
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* @param {Object} selectionBounds 选区边界
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* @returns {String} 抠图结果的DataURL
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* @private
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*/
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async _performCutoutWithRasterized(
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sourceObjects,
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selectionObject,
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selectionBounds
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) {
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try {
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console.log("=== 开始使用createRasterizedImage执行抠图 ===");
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console.log(`源对象数量: ${sourceObjects.length}`);
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console.log(`选区边界:`, selectionBounds);
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// 确定缩放因子，确保高质量输出
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let scaleFactor = this.baseResolutionScale;
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if (this.highResolutionEnabled) {
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const devicePixelRatio = window.devicePixelRatio || 1;
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scaleFactor = Math.max(scaleFactor, devicePixelRatio * 1.5);
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}
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// 使用createRasterizedImage生成栅格化图像，将选区作为裁剪路径
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const rasterizedDataURL = await createRasterizedImage({
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canvas: this.canvas,
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fabricObjects: sourceObjects,
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clipPath: selectionObject, // 使用选区作为裁剪路径
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trimWhitespace: true,
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trimPadding: 2,
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quality: 1.0,
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format: "png",
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scaleFactor: scaleFactor,
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// isReturenDataURL: true, // 返回DataURL
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preserveOriginalQuality: true, // 启用高质量模式
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selectionManager: this.selectionManager, // 传递选区管理器，用于获取羽化值
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});
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if (!rasterizedDataURL) {
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throw new Error("栅格化生成图像失败");
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}
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console.log(`✅ 高质量抠图完成，缩放因子: ${scaleFactor}x`);
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return rasterizedDataURL;
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} catch (error) {
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console.error("使用createRasterizedImage执行抠图失败:", error);
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// 如果createRasterizedImage失败，回退到原始方法
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console.log("⚠️ 回退到原始抠图方法...");
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return await this._performCutout(
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{ fabricObjects: sourceObjects },
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selectionObject
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);
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}
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}
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/**
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* 原始抠图方法（作为备用方案）
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* @param {Object} sourceLayer 源图层
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* @param {Object} selectionObject 选区对象
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* @returns {String} 抠图结果的DataURL
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* @private
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*/
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async _performCutout(sourceLayer, selectionObject) {
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try {
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console.log("=== 使用原始方法执行抠图 ===");
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// 获取选区边界
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const selectionBounds = selectionObject.getBoundingRect(true, true);
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// 保存画布当前状态
|
||
const originalActiveObject = this.canvas.getActiveObject();
|
||
const originalSelection = this.canvas.selection;
|
||
|
||
// 临时禁用画布选择
|
||
this.canvas.selection = false;
|
||
this.canvas.discardActiveObject();
|
||
|
||
let tempGroup = null;
|
||
let originalObjects = [];
|
||
|
||
try {
|
||
// 收集源图层中的可见对象
|
||
const visibleObjects = sourceLayer.fabricObjects.filter(
|
||
(obj) => obj.visible
|
||
);
|
||
|
||
if (visibleObjects.length === 0) {
|
||
throw new Error("源图层没有可见对象");
|
||
}
|
||
|
||
// 如果只有一个对象且已经是组，直接使用
|
||
if (visibleObjects.length === 1 && visibleObjects[0].type === "group") {
|
||
tempGroup = visibleObjects[0];
|
||
} else {
|
||
// 创建临时组
|
||
const clonedObjects = [];
|
||
for (const obj of visibleObjects) {
|
||
const cloned = await this._cloneObject(obj);
|
||
clonedObjects.push(cloned);
|
||
}
|
||
|
||
tempGroup = new fabric.Group(clonedObjects, {
|
||
selectable: false,
|
||
evented: false,
|
||
});
|
||
|
||
this.canvas.add(tempGroup);
|
||
}
|
||
|
||
// 设置选区为裁剪路径
|
||
const clipPath = await this._cloneObject(selectionObject);
|
||
clipPath.set({
|
||
fill: "",
|
||
stroke: "",
|
||
absolutePositioned: true,
|
||
originX: "left",
|
||
originY: "top",
|
||
});
|
||
|
||
tempGroup.set({
|
||
clipPath: clipPath,
|
||
});
|
||
|
||
this.canvas.renderAll();
|
||
|
||
// 计算渲染区域
|
||
const renderBounds = {
|
||
left: selectionBounds.left,
|
||
top: selectionBounds.top,
|
||
width: selectionBounds.width,
|
||
height: selectionBounds.height,
|
||
};
|
||
|
||
// 设置高分辨率倍数
|
||
let highResolutionScale = 1;
|
||
if (this.highResolutionEnabled) {
|
||
const devicePixelRatio = window.devicePixelRatio || 1;
|
||
highResolutionScale = Math.max(
|
||
this.baseResolutionScale,
|
||
devicePixelRatio * 2
|
||
);
|
||
}
|
||
|
||
// 创建用于导出的高分辨率canvas
|
||
const exportCanvas = document.createElement("canvas");
|
||
const exportCtx = exportCanvas.getContext("2d", {
|
||
alpha: true,
|
||
willReadFrequently: false,
|
||
colorSpace: "srgb",
|
||
});
|
||
|
||
const actualWidth = Math.round(
|
||
renderBounds.width * highResolutionScale
|
||
);
|
||
const actualHeight = Math.round(
|
||
renderBounds.height * highResolutionScale
|
||
);
|
||
|
||
exportCanvas.width = actualWidth;
|
||
exportCanvas.height = actualHeight;
|
||
exportCanvas.style.width = renderBounds.width + "px";
|
||
exportCanvas.style.height = renderBounds.height + "px";
|
||
|
||
exportCtx.imageSmoothingEnabled = true;
|
||
exportCtx.imageSmoothingQuality = "high";
|
||
exportCtx.clearRect(0, 0, actualWidth, actualHeight);
|
||
|
||
const vpt = this.canvas.viewportTransform;
|
||
const zoom = this.canvas.getZoom();
|
||
|
||
exportCtx.save();
|
||
exportCtx.scale(highResolutionScale, highResolutionScale);
|
||
exportCtx.translate(-renderBounds.left, -renderBounds.top);
|
||
|
||
if (zoom !== 1 || vpt[4] !== 0 || vpt[5] !== 0) {
|
||
exportCtx.transform(vpt[0], vpt[1], vpt[2], vpt[3], vpt[4], vpt[5]);
|
||
}
|
||
|
||
tempGroup.render(exportCtx);
|
||
exportCtx.restore();
|
||
|
||
const dataUrl = exportCanvas.toDataURL("image/png", 1.0);
|
||
return dataUrl;
|
||
} finally {
|
||
// 清理和恢复
|
||
if (tempGroup) {
|
||
tempGroup.set({ clipPath: null });
|
||
if (originalObjects.length > 0) {
|
||
this.canvas.remove(tempGroup);
|
||
}
|
||
}
|
||
|
||
this.canvas.selection = originalSelection;
|
||
if (originalActiveObject) {
|
||
this.canvas.setActiveObject(originalActiveObject);
|
||
}
|
||
this.canvas.renderAll();
|
||
}
|
||
} catch (error) {
|
||
console.error("原始方法执行抠图失败:", error);
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 从DataURL创建fabric图像对象
|
||
* @param {String} dataUrl 图像DataURL
|
||
* @param {Object} selectionBounds 选区边界信息
|
||
* @returns {fabric.Image} fabric图像对象
|
||
* @private
|
||
*/
|
||
async _createFabricImage(dataUrl, selectionBounds) {
|
||
return new Promise((resolve, reject) => {
|
||
fabric.Image.fromURL(
|
||
dataUrl,
|
||
(img) => {
|
||
if (!img) {
|
||
reject(new Error("无法从DataURL创建图像"));
|
||
return;
|
||
}
|
||
|
||
// 使用选区的位置作为图像位置
|
||
let targetLeft = selectionBounds.left + selectionBounds.width / 2;
|
||
let targetTop = selectionBounds.top + selectionBounds.height / 2;
|
||
|
||
// 设置图像属性，保持选区的原始尺寸
|
||
img.set({
|
||
left: targetLeft,
|
||
top: targetTop,
|
||
originX: "center",
|
||
originY: "center",
|
||
selectable: true,
|
||
evented: true,
|
||
hasControls: true,
|
||
hasBorders: true,
|
||
cornerStyle: "circle",
|
||
cornerColor: "#007aff",
|
||
cornerSize: 10,
|
||
transparentCorners: false,
|
||
borderColor: "#007aff",
|
||
borderScaleFactor: 2,
|
||
// 优化图像渲染质量
|
||
objectCaching: false, // 禁用缓存以确保最佳质量
|
||
statefullCache: true,
|
||
noScaleCache: false,
|
||
});
|
||
|
||
// 更新坐标
|
||
img.setCoords();
|
||
|
||
console.log(
|
||
`图像创建完成，位置: (${targetLeft}, ${targetTop}), 尺寸: ${img.width}x${img.height}`
|
||
);
|
||
resolve(img);
|
||
},
|
||
{
|
||
crossOrigin: "anonymous",
|
||
// 确保图像以最高质量加载
|
||
quality: 1.0,
|
||
}
|
||
);
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 克隆fabric对象
|
||
* @param {Object} obj fabric对象
|
||
* @returns {Object} 克隆的对象
|
||
* @private
|
||
*/
|
||
async _cloneObject(obj) {
|
||
return new Promise((resolve, reject) => {
|
||
if (!obj) {
|
||
reject(new Error("对象无效，无法克隆"));
|
||
return;
|
||
}
|
||
|
||
try {
|
||
obj.clone((cloned) => {
|
||
if (cloned) {
|
||
resolve(cloned);
|
||
} else {
|
||
reject(new Error("对象克隆失败"));
|
||
}
|
||
});
|
||
} catch (error) {
|
||
reject(error);
|
||
}
|
||
});
|
||
}
|
||
|
||
/**
|
||
* 序列化选区对象
|
||
* @private
|
||
*/
|
||
_serializeSelectionObject() {
|
||
try {
|
||
if (!this.selectionManager) {
|
||
console.warn("选区管理器不存在，无法序列化选区对象");
|
||
return;
|
||
}
|
||
|
||
const selectionObject = this.selectionManager.getSelectionObject();
|
||
if (!selectionObject) {
|
||
console.warn("当前没有选区对象，无法序列化");
|
||
return;
|
||
}
|
||
|
||
// 将选区对象转换为可序列化的对象
|
||
this.serializedSelectionObject = selectionObject.toObject([
|
||
"id",
|
||
"layerId",
|
||
"layerName",
|
||
"parentId",
|
||
]);
|
||
|
||
console.log("选区对象已序列化保存");
|
||
} catch (error) {
|
||
console.error("序列化选区对象失败:", error);
|
||
this.serializedSelectionObject = null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 反序列化选区对象
|
||
* @returns {Promise<Object>} 选区对象
|
||
* @private
|
||
*/
|
||
async _getSelectionObject() {
|
||
try {
|
||
// 优先使用克隆的选区对象
|
||
if (this._clonedSelectionObject) {
|
||
console.log("使用克隆的选区对象");
|
||
return await this._cloneObject(this._clonedSelectionObject);
|
||
}
|
||
|
||
// 尝试从选区管理器获取当前选区
|
||
const currentSelection = this.selectionManager.getSelectionObject();
|
||
if (currentSelection) {
|
||
console.log("从选区管理器获取到当前选区");
|
||
return currentSelection;
|
||
}
|
||
|
||
// 最后使用序列化数据恢复（备用方案）
|
||
if (!this.serializedSelectionObject) {
|
||
console.error("没有可用的选区对象数据");
|
||
return null;
|
||
}
|
||
|
||
console.log("从序列化数据恢复选区对象");
|
||
|
||
// 根据选区对象类型进行反序列化
|
||
return new Promise((resolve, reject) => {
|
||
const objectType = this.serializedSelectionObject.type;
|
||
|
||
if (objectType === "path") {
|
||
fabric.Path.fromObject(this.serializedSelectionObject, (path) => {
|
||
if (path) {
|
||
console.log("路径选区对象反序列化成功");
|
||
resolve(path);
|
||
} else {
|
||
reject(new Error("路径选区对象反序列化失败"));
|
||
}
|
||
});
|
||
} else if (objectType === "polygon") {
|
||
fabric.Polygon.fromObject(
|
||
this.serializedSelectionObject,
|
||
(polygon) => {
|
||
if (polygon) {
|
||
console.log("多边形选区对象反序列化成功");
|
||
resolve(polygon);
|
||
} else {
|
||
reject(new Error("多边形选区对象反序列化失败"));
|
||
}
|
||
}
|
||
);
|
||
} else if (objectType === "rect") {
|
||
fabric.Rect.fromObject(this.serializedSelectionObject, (rect) => {
|
||
if (rect) {
|
||
console.log("矩形选区对象反序列化成功");
|
||
resolve(rect);
|
||
} else {
|
||
reject(new Error("矩形选区对象反序列化失败"));
|
||
}
|
||
});
|
||
} else if (objectType === "ellipse" || objectType === "circle") {
|
||
fabric.Ellipse.fromObject(
|
||
this.serializedSelectionObject,
|
||
(ellipse) => {
|
||
if (ellipse) {
|
||
console.log("椭圆选区对象反序列化成功");
|
||
resolve(ellipse);
|
||
} else {
|
||
reject(new Error("椭圆选区对象反序列化失败"));
|
||
}
|
||
}
|
||
);
|
||
} else {
|
||
// 通用对象反序列化
|
||
fabric.util.enlivenObjects(
|
||
[this.serializedSelectionObject],
|
||
(objects) => {
|
||
if (objects && objects.length > 0) {
|
||
console.log("通用选区对象反序列化成功");
|
||
resolve(objects[0]);
|
||
} else {
|
||
reject(new Error("通用选区对象反序列化失败"));
|
||
}
|
||
}
|
||
);
|
||
}
|
||
});
|
||
} catch (error) {
|
||
console.error("获取选区对象失败:", error);
|
||
return null;
|
||
}
|
||
}
|
||
}
|