。

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

@@ -408,10 +408,12 @@ export default class UIControl {
     coordinate.ratio = 3;
     this.layer.renderer.autoRedraw()
     setTimeout(() => {
-      this.downloadCadImg(canvas, filename)
-    })
-    coordinate.ratio = 1;
-    this.layer.renderer.autoRedraw()
+      let img = this.downloadCadImg(canvas, filename)
+      coordinate.ratio = 1;
+      this.layer.renderer.autoRedraw()
+      return img;
+    },100)
+
   }
 
   downloadCadImg(canvas, filename) {