Patch: Support for physical units

sashimi/gui/camera_gui.py

@@ -22,7 +22,7 @@
 from sashimi.hardware.cameras.interface import CameraWarning
 from sashimi.config import read_config
 from enum import Enum
-from multiprocessing import Queue
+from multiprocessing import Queue, Event
 
 conf = read_config()
 
@@ -164,6 +164,19 @@ def __init__(self, state: State, timer: QTimer, style: str):
             self.reset_contrast
         )
 
+        self.add_scale_bar_units(" um")
+
+    def add_scale_bar_units(self, units: str) -> None:
+
+        scale_bar = self.viewer.window.qt_viewer.scale_bar
+        old_on_zoom_change = scale_bar._on_zoom_change
+
+        def _on_zoom_change(event: Event):
+            old_on_zoom_change(event)
+            scale_bar.text_node.text += units
+
+        scale_bar._on_zoom_change = _on_zoom_change
+
     def get_fullframe_size(self):
         """Maximum size of the image at current binning. As stated above, we assume square sensors."""
         binning = int(self.state.camera_settings.binning)