boss getting close

tools/python-detect/annotate.py

@@ -472,6 +472,8 @@ class Annotator:
     # ── mouse ─────────────────────────────────────────────────────
 
     def _on_mouse(self, ev, wx, wy, flags, _):
+        if self.img is None:
+            return
         nx, ny = self._to_norm(wx, wy)
         self.mouse_n = (nx, ny)
 
@@ -628,20 +630,18 @@ class Annotator:
     # ── main loop ─────────────────────────────────────────────────
 
     def run(self):
-        if not self.all_files:
-            print(f"No images in {self.img_dir}")
-            return
-
         cv2.namedWindow(self.WIN, cv2.WINDOW_NORMAL)
         cv2.resizeWindow(self.WIN, self.ww, self.wh)
         cv2.setMouseCallback(self.WIN, self._on_mouse)
 
-        self._refilter()
-        if not self.files:
-            print("No images match current filter")
-            return
-        self._load()
-        self._draw()
+        if not self.all_files:
+            print(f"No images in {self.img_dir}")
+            self._draw()
+        else:
+            self._refilter()
+            if self.files:
+                self._load()
+            self._draw()
 
         while True:
             key = cv2.waitKeyEx(30)