From 1ede89cc5eae9fe978c7aa38f7e30db8b82b79cb Mon Sep 17 00:00:00 2001
From: steppke_a <alexander.steppke@psi.ch>
Date: Sun, 25 Feb 2024 18:26:34 +0100
Subject: [PATCH] added connected adjustables

---
 slic/core/adjustable/__init__.py         |  4 +++
 slic/core/adjustable/primarysecondary.py | 42 ++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 slic/core/adjustable/primarysecondary.py

diff --git a/slic/core/adjustable/__init__.py b/slic/core/adjustable/__init__.py
index bf3e3769..86f0647b 100644
--- a/slic/core/adjustable/__init__.py
+++ b/slic/core/adjustable/__init__.py
@@ -11,5 +11,9 @@ from .collection import Collection
 from .combined import Combined
 from .converted import Converted
 from .scaler import Scaler
+from .primarysecondary import PrimarySecondary
+
+
+
 
 
diff --git a/slic/core/adjustable/primarysecondary.py b/slic/core/adjustable/primarysecondary.py
new file mode 100644
index 00000000..89066af4
--- /dev/null
+++ b/slic/core/adjustable/primarysecondary.py
@@ -0,0 +1,42 @@
+from .adjustable import Adjustable
+
+class PrimarySecondary(Adjustable):
+    """
+    An adjustable which connects or links a secondary adjustable to
+    a primary adjustable. The secondary is then following the primary
+    one according to:
+
+    secondary_target = target * scale_factor + offset
+
+    The speed of the motion is not linked.
+    """
+
+    def __init__(self, ID, primary_adj, secondary_adj, scale_factor=1.0, offset=0, **kwargs):
+        super().__init__(ID, **kwargs)
+
+        self.primary = primary_adj
+        self.secondary = secondary_adj
+        self.adjs = [self.primary, self.secondary]
+
+        self.scale_factor = scale_factor
+        self.offset = offset
+
+    def get_current_value(self):
+        return self.primary.get_current_value()
+
+    def set_target_value(self, value):
+        secondary_target = value * self.scale_factor + self.offset
+
+        tasks = [
+            self.primary.set_target_value(value),
+            self.secondary.set_target_value(secondary_target),
+        ]
+
+        for t in tasks:
+            t.wait()
+
+    def is_moving(self):
+        return any(a.is_moving() for a in self.adjs)
+
+    def __repr__(self):
+        return f"Primary:\n{repr(self.primary)}\nSecondary:\n{repr(self.secondary)}"