fix: 1

src/view/case/draw/board/editCAD/Controls/UIControl.js

@@ -404,11 +404,12 @@ export default class UIControl {
     return json;
   }
 
-  exportImg(canvas,filename){
+  exportImg(canvas,filename, callback){
     coordinate.ratio = 3;
     this.layer.renderer.autoRedraw()
     setTimeout(() => {
       let img = this.downloadCadImg(canvas, filename)
+      // 完成callback传出blob  callback(blob)
       coordinate.ratio = 1;
       this.layer.renderer.autoRedraw()
       return img;