renamed value_in_range.py update_changes.py

slic/devices/general/update_changes.py

@@ -0,0 +1,44 @@
+from slic.utils.rangebar import RangeBar
+
+
+def update_changes(Adj):
+
+    def get_position_str(start, stop, value):
+        return RangeBar(start, stop, width=30, units="", fmt="1.5g").get(value)
+
+    def update_change(self, value):
+        start = self.get_current_value()
+        print(f"Changing {self.name} from {start:1.5g} by {value-start:1.5g} to {value:1.5g}\n")
+        print(get_position_str(start, value, start), end="\r")
+        try:
+
+            def cbfoo(**kwargs):
+                print(get_position_str(start, value, kwargs["value"]), end="\r")
+
+            cb_id = self.add_value_callback(cbfoo)
+            self._currentChange = self.set_target_value(value)
+            self._currentChange.wait()
+        except KeyboardInterrupt:
+            self._currentChange.stop()
+            print(f"\nAborted change at (~) {self.get_current_value():1.5g}")
+        finally:
+            self.clear_value_callback(cb_id)
+        return self._currentChange
+
+    def update_change_relative(self, value, *args, **kwargs):
+        if hasattr(self, "_currentChange") and self._currentChange and not (self._currentChange.status() == "done"):
+            startvalue = self._currentChange.target
+        elif hasattr(self, "is_moving") and not self.is_moving():
+            startvalue = self.get_current_value(readback=True, *args, **kwargs)
+        else:
+            startvalue = self.get_current_value(*args, **kwargs)
+        self._currentChange = self.update_change(value + startvalue, *args, **kwargs)
+        return self._currentChange
+
+    Adj.update_change = update_change
+    Adj.update_change_relative = update_change_relative
+
+    return Adj
+
+
+