added tweaking (+/- delta) to Adjustable

2020-11-21 14:42:26 +01:00
parent fa5cd52409
commit fcc85562a7
1 changed files with 6 additions and 0 deletions
@@ -25,6 +25,12 @@ class Adjustable(BaseAdjustable, SpecConvenience):
            return self.current_task.stop()


+    def tweak(self, delta, *args, **kwargs):
+        value = self.get_current_value()
+        value += delta
+        return self.set_target_value(value, *args, **kwargs)
+
+
    def __call__(self, value=None):
        if value is not None:
            return self.set_target_value(value)