made image_threshold an enforced setting, transfer value to threshold if useful; add missing settings as None

scam.py

@@ -9,14 +9,15 @@ clargs = parser.parse_args()
 
 SHOWN_SETTINGS = {
     "image_background": "Background",
-    "image_threshold": "image_threshold",
+    "threshold": "Threshold",
     "project_axis": "Projection axis",
     "roi_background": "ROI Background",
     "roi_signal": "ROI Signal"
 }
 
 ENFORCED_SETTINGS = [
-    "image_background_enable"
+    "image_background_enable",
+    "image_threshold"
 ]
 
 
@@ -111,6 +112,9 @@ class MainPanel(wx.Panel):
             self.entries.update(cfg)
         else:
             filtered_cfg = {k: v for k, v in cfg.items() if k in SHOWN_SETTINGS}
+            for k in SHOWN_SETTINGS:
+                if k not in filtered_cfg:
+                    filtered_cfg[k] = None
             self.entries.update(filtered_cfg, SHOWN_SETTINGS)
 
         self._adjust_size()
@@ -153,16 +157,32 @@ class MainPanel(wx.Panel):
 def check_incoming_cfg(cfg):
     bkg_enable = cfg.get("image_background_enable")
     if bkg_enable not in (None, "passive"):
-        printable_bkg_enable = repr(bkg_enable).replace("'", '"')
+        printable_bkg_enable = printable(bkg_enable)
         print(f"Warning: found: image_background_enable = {printable_bkg_enable}, this will be set to None or \"passive\" upon saving")
 
+    img_thresh = cfg.get("image_threshold")
+    if img_thresh is not None:
+        printable_img_thresh = printable(img_thresh)
+        print(f"Warning: found: image_threshold = {printable_img_thresh}, this will be set to None upon saving")
+
+        thresh = cfg.get("threshold")
+        if thresh is None:
+            print(f"Warning: found: threshold = None, will overwrite with value of image_threshold ({printable_img_thresh})")
+
 
 def check_outgoing_cfg(cfg):
     bkg = cfg["image_background"]
     cfg["image_background_enable"] = "passive" if bkg else None
+
+    cfg["image_threshold"] = None
+
     return cfg
 
 
+def printable(val):
+    return repr(val).replace("'", '"')
+
+