added white theme, some features to processing and saving

python_app/gui/controllers/app_window_plot/bscan_plot_mixin.py

@@ -39,6 +39,8 @@ def _result_tail(
 
 def build_bscan_signature(
     live_config: ProcessingLiveConfig,
+    *,
+    subtract_mean_ascan_enabled: bool,
     result_history: list[ResultCollection],
     history_limit: int,
     floor_collection_id: int,
@@ -57,11 +59,25 @@ def build_bscan_signature(
         float(live_config.bscan_gain),
         float(live_config.bscan_start_freq_mhz),
         float(live_config.bscan_stop_freq_mhz),
+        bool(subtract_mean_ascan_enabled),
         int(floor_collection_id),
         tuple((int(collection.collection_id), int(collection.monotonic_ns), len(collection.blocks)) for collection in result_tail),
     )
 
 
+def apply_mean_ascan_subtraction(
+    history: deque[np.ndarray],
+    *,
+    enabled: bool,
+) -> np.ndarray:
+    """Subtract mean A-scan across sweeps when enabled."""
+    sweeps = np.vstack(history).astype(np.float32, copy=False)
+    if not enabled:
+        return sweeps
+    mean_trace = np.mean(sweeps, axis=0, dtype=np.float32)
+    return sweeps - mean_trace
+
+
 def rebuild_bscan_history_from_results(
     result_history: list[ResultCollection],
     history_limit: int,
@@ -183,7 +199,10 @@ class AppWindowBscanPlotMixin:
         if not history or depth_axis is None:
             return False
 
-        sweeps = np.vstack(history).astype(np.float32, copy=False)
+        sweeps = apply_mean_ascan_subtraction(
+            history,
+            enabled=bool(self._bscan_subtract_mean_ascan.isChecked()),
+        )
         if sweeps.size == 0:
             return False
 
@@ -229,6 +248,7 @@ class AppWindowBscanPlotMixin:
         result_history = list(self._result_history)
         return build_bscan_signature(
             live_config=live_config,
+            subtract_mean_ascan_enabled=bool(self._bscan_subtract_mean_ascan.isChecked()),
             result_history=result_history,
             history_limit=self._bscan_history_limit,
             floor_collection_id=self._bscan_history_floor_collection_id,