部件选取框选工具合并操作

src/component/Canvas/CanvasEditor/managers/PartManager.js

@@ -90,16 +90,17 @@ export class PartManager {
 
 		if (toolId === OperationType.PART_ERASER) {
 			this.setEraserTool();
-		} else if (toolId === OperationType.PART || toolId === OperationType.PART_RECTANGLE) {
-			this.clearPointData();
-			this.resetPartObject();
-		}
-		if (toolId === OperationType.PART_ERASER || toolId === OperationType.PART_BRUSH) {
-			if (this.pointList.length > 0) {
-				this.clearPointData();
-				this.resetPartObject();
-			}
 		} 
+		// else if (toolId === OperationType.PART || toolId === OperationType.PART_RECTANGLE) {
+		// 	this.clearPointData();
+		// 	this.resetPartObject();
+		// }
+		// if (toolId === OperationType.PART_ERASER || toolId === OperationType.PART_BRUSH) {
+		// 	if (this.pointList.length > 0) {
+		// 		this.clearPointData();
+		// 		this.resetPartObject();
+		// 	}
+		// }
 
 		// 如果从非选区工具切换到选区工具，初始化事件
 		if (!wasActive && this.isActive) {
@@ -380,7 +381,8 @@ export class PartManager {
 			box: [...this.pointList],
 		});
 		const image = await this.loadImageToObject(url);
-		const canvas = getObjectAlphaToCanvas(image, null, 0, this.rgba);
+		const data = this.partCanvas?.getContext("2d")?.getImageData(0, 0, this.partCanvas.width, this.partCanvas.height);
+		const canvas = getObjectAlphaToCanvas(image, data, 0, this.rgba, !!data);
 		this.partDrawCommand(canvas);
 	}
 	/** 获取分隔后图片 */

src/component/Canvas/CanvasEditor/utils/objectHelper.js

@@ -65,9 +65,10 @@ export async function restoreFabricObject(serializedObject, canvas) {
  * @param {ImageData} revData - 相反的ImageData，白通道的相同位置是否为透明，revData为白色为透明，黑色为不透明
  * @param {number} diff - 差值，默认 25
  * @param {Object} rgba - 自定义 rgba 值，默认 { r: 255, g: 255, b: 255, a: 255 }
+ * @param {boolean} isMerge - 是否合并，true=合并revData，false=反转revData
  * @returns {HTMLCanvasElement|null} 包含黑白通道的画布，或 null 如果失败
 */
-export function getObjectAlphaToCanvas(object, revData, diff = 30, rgba = { r: 255, g: 255, b: 255, a: 255 }) {
+export function getObjectAlphaToCanvas(object, revData, diff = 30, rgba = { r: 255, g: 255, b: 255, a: 255 }, isMerge = false) {
 	const image = object.getElement();
 	if (image.nodeName !== "IMG" && image.nodeName !== "CANVAS") {
 		console.warn("对象不是图片");
@@ -93,18 +94,20 @@ export function getObjectAlphaToCanvas(object, revData, diff = 30, rgba = { r: 2
 		const revG = revData?.data[i + 1] || 0;
 		const revB = revData?.data[i + 2] || 0;
 		const revA = revData?.data[i + 3] || 0;
+		let isHave = false;
 		if (r || g || b || a) {
 			if (revR > diff || revG > diff || revB > diff || revA > diff) {
-				data.data[i + 0] = 0;
+				isHave = false;
-				data.data[i + 1] = 0;
-				data.data[i + 2] = 0;
-				data.data[i + 3] = 0;
 			} else {
+				isHave = true;
+			}
+		}
+		if (isMerge && (revR || revG || revB || revA)) isHave = true;
+		if (isHave) {
 			data.data[i + 0] = rgba.r;
 			data.data[i + 1] = rgba.g;
 			data.data[i + 2] = rgba.b;
 			data.data[i + 3] = rgba.a;
-			}
 		} else {
 			data.data[i + 0] = 0;
 			data.data[i + 1] = 0;

src/component/Canvas/canvasExample.vue

@@ -333,6 +333,7 @@
 	]);
 	const canvasLoadJsonSuccess = () => {
 		console.log("画布加载JSON成功");
+		return;
 		canvasEditor.value?.updateOtherLayers({
 			color: { rgba: { r: 255, g: 0, b: 0, a: 1 } },
 			printObject: {