fix(image_roi): position can be set from rpc

bec_widgets/cli/client.py

@@ -602,6 +602,16 @@ class BaseROI(RPCBase):
             ndarray: Pixel data inside the ROI, or (data, coords) if *returnMappedCoords* is True.
         """
 
+    @rpc_call
+    def set_position(self, x: "float", y: "float"):
+        """
+        Sets the position of the ROI.
+
+        Args:
+            x (float): The x-coordinate of the new position.
+            y (float): The y-coordinate of the new position.
+        """
+
 
 class CircularROI(RPCBase):
     """Circular Region of Interest with center/diameter tracking and auto-labeling."""
@@ -701,6 +711,16 @@ class CircularROI(RPCBase):
             ndarray: Pixel data inside the ROI, or (data, coords) if *returnMappedCoords* is True.
         """
 
+    @rpc_call
+    def set_position(self, x: "float", y: "float"):
+        """
+        Sets the position of the ROI.
+
+        Args:
+            x (float): The x-coordinate of the new position.
+            y (float): The y-coordinate of the new position.
+        """
+
 
 class Curve(RPCBase):
     @rpc_call
@@ -2652,6 +2672,16 @@ class RectangularROI(RPCBase):
             ndarray: Pixel data inside the ROI, or (data, coords) if *returnMappedCoords* is True.
         """
 
+    @rpc_call
+    def set_position(self, x: "float", y: "float"):
+        """
+        Sets the position of the ROI.
+
+        Args:
+            x (float): The x-coordinate of the new position.
+            y (float): The y-coordinate of the new position.
+        """
+
 
 class ResetButton(RPCBase):
     """A button that resets the scan queue."""

bec_widgets/widgets/plots/roi/image_roi.py

@@ -113,6 +113,7 @@ class BaseROI(BECConnector):
         "line_width.setter",
         "get_coordinates",
         "get_data_from_image",
+        "set_position",
     ]
 
     def __init__(
@@ -333,6 +334,16 @@ class BaseROI(BECConnector):
     def add_scale_handle(self):
         return
 
+    def set_position(self, x: float, y: float):
+        """
+        Sets the position of the ROI.
+
+        Args:
+            x (float): The x-coordinate of the new position.
+            y (float): The y-coordinate of the new position.
+        """
+        self.setPos(x, y)
+
     def remove(self):
         handles = self.handles
         for i in range(len(handles)):

tests/unit_tests/test_image_rois.py

@@ -188,3 +188,20 @@ def test_roi_controller_get_roi_methods(qtbot, mocked_client):
     assert controller.get_roi(1) == r2
     assert controller.get_roi(99) is None
     assert controller.get_roi_by_name("notfound") is None
+
+
+def test_roi_set_position(bec_image_widget_with_roi):
+    """Test that set_position updates the ROI position and coordinates."""
+    widget, roi, _ = bec_image_widget_with_roi
+    # Save original coordinates
+    orig_coords = roi.get_coordinates(typed=False)
+    # Move ROI by a known offset
+    roi.set_position(10, 15)
+    new_coords = roi.get_coordinates(typed=False)
+    # The new position should reflect the set_position call
+    assert new_coords != orig_coords
+    # The first coordinate should match the new position
+    if hasattr(roi, "pos"):
+        pos = roi.pos()
+        assert int(pos.x()) == 10
+        assert int(pos.y()) == 15