2.8.4

Automatically generated by python-semantic-release

.github/workflows/end2end-conda.yml

@@ -12,6 +12,7 @@ jobs:
       CHILD_PIPELINE_BRANCH: main  # Set the branch you want for ophyd_devices
       BEC_CORE_BRANCH: main        # Set the branch you want for bec
       OPHYD_DEVICES_BRANCH: main   # Set the branch you want for ophyd_devices
+      PLUGIN_REPO_BRANCH: main     # Set the branch you want for the plugin repo
       PROJECT_PATH: ${{ github.repository }}
       QTWEBENGINE_DISABLE_SANDBOX: 1
       QT_QPA_PLATFORM: "offscreen"
@@ -39,10 +40,11 @@ jobs:
           echo -e "\033[35;1m Using branch $OPHYD_DEVICES_BRANCH of OPHYD_DEVICES \033[0;m";
           git clone --branch $OPHYD_DEVICES_BRANCH https://github.com/bec-project/ophyd_devices.git
           export OHPYD_DEVICES_PATH=$PWD/ophyd_devices
+          echo -e "\033[35;1m Using branch $PLUGIN_REPO_BRANCH of bec_testing_plugin \033[0;m";
+          git clone --branch $PLUGIN_REPO_BRANCH https://github.com/bec-project/bec_testing_plugin.git
           cd ./bec
           conda create -q -n test-environment python=3.11
           source ./bin/install_bec_dev.sh -t
           cd ../
-          pip install -e ./ophyd_devices
-          pip install -e .[dev,pyside6]
+          pip install -e ./ophyd_devices -e .[dev,pyside6] -e ./bec_testing_plugin
           pytest -v --files-path ./ --start-servers --random-order  ./tests/end-2-end

CHANGELOG.md

@@ -1,6 +1,41 @@
 # CHANGELOG
 
 
+## v2.8.4 (2025-05-30)
+
+### Bug Fixes
+
+- **crosshair**: Label decimal precision is dynamically scaled with the plot zoom; API of all
+  affected widgets adjusted; option added to PlotBase; closes #637
+  ([`c8128fa`](https://github.com/bec-project/bec_widgets/commit/c8128faf79c43487921aada9dbf1869ef5bda93c))
+
+
+## v2.8.3 (2025-05-30)
+
+### Bug Fixes
+
+- Guard plugin repo import in e2e test
+  ([`bf172b8`](https://github.com/bec-project/bec_widgets/commit/bf172b8431ec207f39206d2a0446908f7186858a))
+
+### Refactoring
+
+- Store modules with widget search
+  ([`b225a7c`](https://github.com/bec-project/bec_widgets/commit/b225a7cc90b55697211c28d9411b6f85c8077217))
+
+### Testing
+
+- **e2e**: Add tests involving plugin repo
+  ([`05329ab`](https://github.com/bec-project/bec_widgets/commit/05329ab50fe10ffc3c19ef3eb408912bb9068de3))
+
+
+## v2.8.2 (2025-05-27)
+
+### Bug Fixes
+
+- **image_roi**: Rois are invertible by default, fixes resizing bug when adding from ROI manager
+  ([`0bdd4e8`](https://github.com/bec-project/bec_widgets/commit/0bdd4e86a24a61b5365febcb2fcbde0532117053))
+
+
 ## v2.8.1 (2025-05-27)
 
 ### Bug Fixes

bec_widgets/applications/launch_window.py

@@ -242,7 +242,7 @@ class LaunchWindow(BECMainWindow):
         )
 
         # plugin widgets
-        self.available_widgets: dict[str, BECWidget] = get_all_plugin_widgets()
+        self.available_widgets: dict[str, type[BECWidget]] = get_all_plugin_widgets().as_dict()
         if self.available_widgets:
             plugin_repo_name = next(iter(self.available_widgets.values())).__module__.split(".")[0]
             plugin_repo_name = plugin_repo_name.removesuffix("_bec").upper()

bec_widgets/cli/client.py

@@ -63,7 +63,7 @@ _Widgets = {
 
 
 try:
-    _plugin_widgets = get_all_plugin_widgets()
+    _plugin_widgets = get_all_plugin_widgets().as_dict()
     plugin_client = get_plugin_client_module()
     Widgets = _WidgetsEnumType("Widgets", {name: name for name in _plugin_widgets} | _Widgets)
 
@@ -1221,6 +1221,20 @@ class Image(RPCBase):
         Set auto range for the y-axis.
         """
 
+    @property
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
+    @minimal_crosshair_precision.setter
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
     @property
     @rpc_call
     def color_map(self) -> "str":
@@ -2350,6 +2364,20 @@ class MultiWaveform(RPCBase):
         The font size of the legend font.
         """
 
+    @property
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
+    @minimal_crosshair_precision.setter
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
     @property
     @rpc_call
     def highlighted_index(self):
@@ -3315,6 +3343,20 @@ class ScatterWaveform(RPCBase):
         The font size of the legend font.
         """
 
+    @property
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
+    @minimal_crosshair_precision.setter
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
     @property
     @rpc_call
     def main_curve(self) -> "ScatterCurve":
@@ -3789,6 +3831,20 @@ class Waveform(RPCBase):
         The font size of the legend font.
         """
 
+    @property
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
+    @minimal_crosshair_precision.setter
+    @rpc_call
+    def minimal_crosshair_precision(self) -> "int":
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+
     @property
     @rpc_call
     def curves(self) -> "list[Curve]":

bec_widgets/cli/generate_cli.py

@@ -111,7 +111,7 @@ _Widgets = {
             self.content += """
 
 try:
-    _plugin_widgets = get_all_plugin_widgets()
+    _plugin_widgets = get_all_plugin_widgets().as_dict()
     plugin_client = get_plugin_client_module()
     Widgets = _WidgetsEnumType("Widgets", {name: name for name in _plugin_widgets} | _Widgets)
 

bec_widgets/cli/rpc/rpc_widget_handler.py

@@ -31,10 +31,9 @@ class RPCWidgetHandler:
         Returns:
             None
         """
-        clss = get_custom_classes("bec_widgets")
-        self._widget_classes = get_all_plugin_widgets() | {
-            cls.__name__: cls for cls in clss.widgets if cls.__name__ not in IGNORE_WIDGETS
-        }
+        self._widget_classes = (
+            get_custom_classes("bec_widgets") + get_all_plugin_widgets()
+        ).as_dict(IGNORE_WIDGETS)
 
     def create_widget(self, widget_type, **kwargs) -> BECWidget:
         """

bec_widgets/utils/bec_plugin_helper.py

@@ -3,12 +3,17 @@ from __future__ import annotations
 import importlib.metadata
 import inspect
 import pkgutil
+import traceback
 from importlib import util as importlib_util
 from importlib.machinery import FileFinder, ModuleSpec, SourceFileLoader
 from types import ModuleType
 from typing import Generator
 
-from bec_widgets.utils.bec_widget import BECWidget
+from bec_lib.logger import bec_logger
+
+from bec_widgets.utils.plugin_utils import BECClassContainer, BECClassInfo
+
+logger = bec_logger.logger
 
 
 def _submodule_specs(module: ModuleType) -> tuple[ModuleSpec | None, ...]:
@@ -30,7 +35,12 @@ def _loaded_submodules_from_specs(
         assert isinstance(
             submodule.__loader__, SourceFileLoader
         ), "Module found from FileFinder should have SourceFileLoader!"
-        submodule.__loader__.exec_module(submodule)
+        try:
+            submodule.__loader__.exec_module(submodule)
+        except Exception as e:
+            logger.error(
+                f"Error loading plugin {submodule}: \n{''.join(traceback.format_exception(e))}"
+            )
         yield submodule
 
 
@@ -41,27 +51,29 @@ def _submodule_by_name(module: ModuleType, name: str):
     return None
 
 
-def _get_widgets_from_module(module: ModuleType) -> dict[str, "type[BECWidget]"]:
-    """Find any BECWidget subclasses in the given module and return them with their names."""
+def _get_widgets_from_module(module: ModuleType) -> BECClassContainer:
+    """Find any BECWidget subclasses in the given module and return them with their info."""
     from bec_widgets.utils.bec_widget import BECWidget  # avoid circular import
 
-    return dict(
-        inspect.getmembers(
-            module,
-            predicate=lambda item: inspect.isclass(item)
-            and issubclass(item, BECWidget)
-            and item is not BECWidget,
-        )
+    classes = inspect.getmembers(
+        module,
+        predicate=lambda item: inspect.isclass(item)
+        and issubclass(item, BECWidget)
+        and item is not BECWidget,
+    )
+    return BECClassContainer(
+        BECClassInfo(name=k, module=module.__name__, file=module.__loader__.get_filename(), obj=v)
+        for k, v in classes
     )
 
 
-def _all_widgets_from_all_submods(module):
+def _all_widgets_from_all_submods(module) -> BECClassContainer:
     """Recursively load submodules, find any BECWidgets, and return them all as a flat dict."""
     widgets = _get_widgets_from_module(module)
     if not hasattr(module, "__path__"):
         return widgets
     for submod in _loaded_submodules_from_specs(_submodule_specs(module)):
-        widgets.update(_all_widgets_from_all_submods(submod))
+        widgets += _all_widgets_from_all_submods(submod)
     return widgets
 
 
@@ -75,15 +87,16 @@ def get_plugin_client_module() -> ModuleType | None:
     return _submodule_by_name(plugin, "client") if (plugin := user_widget_plugin()) else None
 
 
-def get_all_plugin_widgets() -> dict[str, "type[BECWidget]"]:
+def get_all_plugin_widgets() -> BECClassContainer:
     """If there is a plugin repository installed, load all widgets from it."""
     if plugin := user_widget_plugin():
         return _all_widgets_from_all_submods(plugin)
     else:
-        return {}
+        return BECClassContainer()
 
 
 if __name__ == "__main__":  # pragma: no cover
-    #  print(get_all_plugin_widgets())
+
     client = get_plugin_client_module()
+    print(get_all_plugin_widgets())
     ...

bec_widgets/utils/crosshair.py

@@ -34,13 +34,21 @@ class Crosshair(QObject):
     coordinatesChanged2D = Signal(tuple)
     coordinatesClicked2D = Signal(tuple)
 
-    def __init__(self, plot_item: pg.PlotItem, precision: int = 3, parent=None):
+    def __init__(
+        self,
+        plot_item: pg.PlotItem,
+        precision: int | None = None,
+        *,
+        min_precision: int = 2,
+        parent=None,
+    ):
         """
         Crosshair for 1D and 2D plots.
 
         Args:
             plot_item (pyqtgraph.PlotItem): The plot item to which the crosshair will be attached.
-            precision (int, optional): Number of decimal places to round the coordinates to. Defaults to None.
+            precision (int | None, optional): Fixed number of decimal places to display. If *None*, precision is chosen dynamically from the current view range.
+            min_precision (int, optional): The lower bound (in decimal places) used when dynamic precision is enabled. Defaults to 2.
             parent (QObject, optional): Parent object for the QObject. Defaults to None.
         """
         super().__init__(parent)
@@ -48,7 +56,9 @@ class Crosshair(QObject):
         self.is_log_x = None
         self.is_derivative = None
         self.plot_item = plot_item
-        self.precision = precision
+        self._precision = precision
+        self._min_precision = max(0, int(min_precision))  # ensure non‑negative
+
         self.v_line = pg.InfiniteLine(angle=90, movable=False)
         self.v_line.skip_auto_range = True
         self.h_line = pg.InfiniteLine(angle=0, movable=False)
@@ -93,6 +103,56 @@ class Crosshair(QObject):
 
         self._connect_to_theme_change()
 
+    @property
+    def precision(self) -> int | None:
+        """Fixed number of decimals; ``None`` enables dynamic mode."""
+        return self._precision
+
+    @precision.setter
+    def precision(self, value: int | None):
+        """
+        Set the fixed number of decimals to display.
+
+        Args:
+            value(int | None): The number of decimals to display. If `None`, dynamic precision is used based on the view range.
+        """
+        self._precision = value
+
+    @property
+    def min_precision(self) -> int:
+        """Lower bound on decimals when dynamic precision is used."""
+        return self._min_precision
+
+    @min_precision.setter
+    def min_precision(self, value: int):
+        """
+        Set the lower bound on decimals when dynamic precision is used.
+
+        Args:
+            value(int): The minimum number of decimals to display. Must be non-negative.
+        """
+        self._min_precision = max(0, int(value))
+
+    def _current_precision(self) -> int:
+        """
+        Get the current precision based on the view range or fixed precision.
+        """
+        if self._precision is not None:
+            return self._precision
+
+        # Dynamically choose precision from the smaller visible span
+        view_range = self.plot_item.vb.viewRange()
+        x_span = abs(view_range[0][1] - view_range[0][0])
+        y_span = abs(view_range[1][1] - view_range[1][0])
+
+        # Ignore zero spans that can appear during initialisation
+        spans = [s for s in (x_span, y_span) if s > 0]
+        span = min(spans) if spans else 1.0
+
+        exponent = np.floor(np.log10(span))  # order of magnitude
+        decimals = max(0, int(-exponent) + 1)
+        return max(self._min_precision, decimals)
+
     def _connect_to_theme_change(self):
         """Connect to the theme change signal."""
         qapp = QApplication.instance()
@@ -324,6 +384,7 @@ class Crosshair(QObject):
                 # not sure how we got here, but just to be safe...
                 return
 
+            precision = self._current_precision()
             for item in self.items:
                 if isinstance(item, pg.PlotDataItem):
                     name = item.name() or str(id(item))
@@ -334,8 +395,8 @@ class Crosshair(QObject):
                     x_snapped_scaled, y_snapped_scaled = self.scale_emitted_coordinates(x, y)
                     coordinate_to_emit = (
                         name,
-                        round(x_snapped_scaled, self.precision),
-                        round(y_snapped_scaled, self.precision),
+                        round(x_snapped_scaled, precision),
+                        round(y_snapped_scaled, precision),
                     )
                     self.coordinatesChanged1D.emit(coordinate_to_emit)
                 elif isinstance(item, pg.ImageItem):
@@ -380,6 +441,7 @@ class Crosshair(QObject):
                 # not sure how we got here, but just to be safe...
                 return
 
+            precision = self._current_precision()
             for item in self.items:
                 if isinstance(item, pg.PlotDataItem):
                     name = item.name() or str(id(item))
@@ -391,8 +453,8 @@ class Crosshair(QObject):
                     x_snapped_scaled, y_snapped_scaled = self.scale_emitted_coordinates(x, y)
                     coordinate_to_emit = (
                         name,
-                        round(x_snapped_scaled, self.precision),
-                        round(y_snapped_scaled, self.precision),
+                        round(x_snapped_scaled, precision),
+                        round(y_snapped_scaled, precision),
                     )
                     self.coordinatesClicked1D.emit(coordinate_to_emit)
                 elif isinstance(item, pg.ImageItem):
@@ -443,7 +505,8 @@ class Crosshair(QObject):
         """
         x, y = pos
         x_scaled, y_scaled = self.scale_emitted_coordinates(x, y)
-        text = f"({x_scaled:.{self.precision}g}, {y_scaled:.{self.precision}g})"
+        precision = self._current_precision()
+        text = f"({x_scaled:.{precision}f}, {y_scaled:.{precision}f})"
         for item in self.items:
             if isinstance(item, pg.ImageItem):
                 image = item.image
@@ -452,7 +515,7 @@ class Crosshair(QObject):
                 ix = int(np.clip(x, 0, image.shape[0] - 1))
                 iy = int(np.clip(y, 0, image.shape[1] - 1))
                 intensity = image[ix, iy]
-                text += f"\nIntensity: {intensity:.{self.precision}g}"
+                text += f"\nIntensity: {intensity:.{precision}f}"
                 break
         # Update coordinate label
         self.coord_label.setText(text)

bec_widgets/utils/plugin_utils.py

@@ -4,7 +4,7 @@ import importlib
 import inspect
 import os
 from dataclasses import dataclass
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Iterable
 
 from bec_lib.plugin_helper import _get_available_plugins
 from qtpy.QtWidgets import QGraphicsWidget, QWidget
@@ -90,15 +90,15 @@ class BECClassInfo:
     name: str
     module: str
     file: str
-    obj: type
+    obj: type[BECWidget]
     is_connector: bool = False
     is_widget: bool = False
     is_plugin: bool = False
 
 
 class BECClassContainer:
-    def __init__(self):
-        self._collection: list[BECClassInfo] = []
+    def __init__(self, initial: Iterable[BECClassInfo] = []):
+        self._collection: list[BECClassInfo] = list(initial)
 
     def __repr__(self):
         return str(list(cl.name for cl in self.collection))
@@ -106,6 +106,16 @@ class BECClassContainer:
     def __iter__(self):
         return self._collection.__iter__()
 
+    def __add__(self, other: BECClassContainer):
+        return BECClassContainer((*self, *(c for c in other if c.name not in self.names)))
+
+    def as_dict(self, ignores: list[str] = []) -> dict[str, type[BECWidget]]:
+        """get a dict of {name: Type} for all the entries in the collection.
+
+        Args:
+            ignores(list[str]): a list of class names to exclude from the dictionary."""
+        return {c.name: c.obj for c in self if c.name not in ignores}
+
     def add_class(self, class_info: BECClassInfo):
         """
         Add a class to the collection.
@@ -115,53 +125,44 @@ class BECClassContainer:
         """
         self.collection.append(class_info)
 
+    @property
+    def names(self):
+        """Return a list of class names"""
+        return [c.name for c in self]
+
     @property
     def collection(self):
-        """
-        Get the collection of classes.
-        """
+        """Get the collection of classes."""
         return self._collection
 
     @property
     def connector_classes(self):
-        """
-        Get all connector classes.
-        """
+        """Get all connector classes."""
         return [info.obj for info in self.collection if info.is_connector]
 
     @property
     def top_level_classes(self):
-        """
-        Get all top-level classes.
-        """
+        """Get all top-level classes."""
         return [info.obj for info in self.collection if info.is_plugin]
 
     @property
     def plugins(self):
-        """
-        Get all plugins. These are all classes that are on the top level and are widgets.
-        """
+        """Get all plugins. These are all classes that are on the top level and are widgets."""
         return [info.obj for info in self.collection if info.is_widget and info.is_plugin]
 
     @property
     def widgets(self):
-        """
-        Get all widgets. These are all classes inheriting from BECWidget.
-        """
+        """Get all widgets. These are all classes inheriting from BECWidget."""
         return [info.obj for info in self.collection if info.is_widget]
 
     @property
     def rpc_top_level_classes(self):
-        """
-        Get all top-level classes that are RPC-enabled. These are all classes that users can choose from.
-        """
+        """Get all top-level classes that are RPC-enabled. These are all classes that users can choose from."""
         return [info.obj for info in self.collection if info.is_plugin and info.is_connector]
 
     @property
     def classes(self):
-        """
-        Get all classes.
-        """
+        """Get all classes."""
         return [info.obj for info in self.collection]
 
 
@@ -197,7 +198,7 @@ def get_custom_classes(repo_name: str) -> BECClassContainer:
                 if not hasattr(obj, "__module__") or obj.__module__ != module.__name__:
                     continue
                 if isinstance(obj, type):
-                    class_info = BECClassInfo(name=name, module=module_name, file=path, obj=obj)
+                    class_info = BECClassInfo(name=name, module=module.__name__, file=path, obj=obj)
                     if issubclass(obj, BECConnector):
                         class_info.is_connector = True
                     if issubclass(obj, BECWidget):

bec_widgets/utils/ui_loader.py

@@ -31,12 +31,9 @@ class UILoader:
     def __init__(self, parent=None):
         self.parent = parent
 
-        widgets = get_custom_classes("bec_widgets").classes
-
-        self.custom_widgets = {widget.__name__: widget for widget in widgets}
-
-        plugin_widgets = get_all_plugin_widgets()
-        self.custom_widgets.update(plugin_widgets)
+        self.custom_widgets = (
+            get_custom_classes("bec_widgets") + get_all_plugin_widgets()
+        ).as_dict()
 
         if PYSIDE6:
             self.loader = self.load_ui_pyside6

bec_widgets/widgets/plots/image/image.py

@@ -88,6 +88,8 @@ class Image(PlotBase):
         "auto_range_x.setter",
         "auto_range_y",
         "auto_range_y.setter",
+        "minimal_crosshair_precision",
+        "minimal_crosshair_precision.setter",
         # ImageView Specific Settings
         "color_map",
         "color_map.setter",

bec_widgets/widgets/plots/multi_waveform/multi_waveform.py

@@ -91,6 +91,8 @@ class MultiWaveform(PlotBase):
         "y_log.setter",
         "legend_label_size",
         "legend_label_size.setter",
+        "minimal_crosshair_precision",
+        "minimal_crosshair_precision.setter",
         # MultiWaveform Specific RPC Access
         "highlighted_index",
         "highlighted_index.setter",

bec_widgets/widgets/plots/plot_base.py

@@ -116,6 +116,7 @@ class PlotBase(BECWidget, QWidget):
         self._user_y_label = ""
         self._y_label_suffix = ""
         self._y_axis_units = ""
+        self._minimal_crosshair_precision = 3
 
         # Plot Indicator Items
         self.tick_item = BECTickItem(parent=self, plot_item=self.plot_item)
@@ -978,7 +979,9 @@ class PlotBase(BECWidget, QWidget):
     def hook_crosshair(self) -> None:
         """Hook the crosshair to all plots."""
         if self.crosshair is None:
-            self.crosshair = Crosshair(self.plot_item, precision=3)
+            self.crosshair = Crosshair(
+                self.plot_item, min_precision=self._minimal_crosshair_precision
+            )
             self.crosshair.crosshairChanged.connect(self.crosshair_position_changed)
             self.crosshair.crosshairClicked.connect(self.crosshair_position_clicked)
             self.crosshair.coordinatesChanged1D.connect(self.crosshair_coordinates_changed)
@@ -1006,6 +1009,29 @@ class PlotBase(BECWidget, QWidget):
 
         self.unhook_crosshair()
 
+    @SafeProperty(
+        int, doc="Minimum decimal places for crosshair when dynamic precision is enabled."
+    )
+    def minimal_crosshair_precision(self) -> int:
+        """
+        Minimum decimal places for crosshair when dynamic precision is enabled.
+        """
+        return self._minimal_crosshair_precision
+
+    @minimal_crosshair_precision.setter
+    def minimal_crosshair_precision(self, value: int):
+        """
+        Set the minimum decimal places for crosshair when dynamic precision is enabled.
+
+        Args:
+            value(int): The minimum decimal places to set.
+        """
+        value_int = max(0, int(value))
+        self._minimal_crosshair_precision = value_int
+        if self.crosshair is not None:
+            self.crosshair.min_precision = value_int
+        self.property_changed.emit("minimal_crosshair_precision", value_int)
+
     @SafeSlot()
     def reset(self) -> None:
         """Reset the plot widget."""

bec_widgets/widgets/plots/roi/image_roi.py

@@ -150,7 +150,12 @@ class BaseROI(BECConnector):
         self.parent_plot_item = parent_image.plot_item
         object_name = label.replace("-", "_").replace(" ", "_") if label else None
         super().__init__(
-            object_name=object_name, config=config, gui_id=gui_id, removable=True, **pg_kwargs
+            object_name=object_name,
+            config=config,
+            gui_id=gui_id,
+            removable=True,
+            invertible=True,
+            **pg_kwargs,
         )
 
         self._label = label or "ROI"

bec_widgets/widgets/plots/scatter_waveform/scatter_waveform.py

@@ -82,6 +82,8 @@ class ScatterWaveform(PlotBase):
         "y_log.setter",
         "legend_label_size",
         "legend_label_size.setter",
+        "minimal_crosshair_precision",
+        "minimal_crosshair_precision.setter",
         # Scatter Waveform Specific RPC Access
         "main_curve",
         "color_map",

bec_widgets/widgets/plots/setting_menus/axis_settings.py

@@ -60,6 +60,7 @@ class AxisSettings(SettingWidget):
             self.ui.y_grid,
             self.ui.inner_axes,
             self.ui.outer_axes,
+            self.ui.minimal_crosshair_precision,
         ]:
             WidgetIO.connect_widget_change_signal(widget, self.set_property)
 
@@ -121,6 +122,7 @@ class AxisSettings(SettingWidget):
             self.ui.y_max,
             self.ui.y_log,
             self.ui.y_grid,
+            self.ui.minimal_crosshair_precision,
         ]:
             property_name = widget.objectName()
             value = getattr(self.target_widget, property_name)
@@ -144,6 +146,7 @@ class AxisSettings(SettingWidget):
             self.ui.y_grid,
             self.ui.outer_axes,
             self.ui.inner_axes,
+            self.ui.minimal_crosshair_precision,
         ]:
             property_name = widget.objectName()
             value = WidgetIO.get_value(widget)

bec_widgets/widgets/plots/setting_menus/axis_settings_horizontal.ui

@@ -14,97 +14,6 @@
             <string>Form</string>
         </property>
         <layout class="QGridLayout" name="gridLayout">
-            <item row="1" column="0">
-                <widget class="QLabel" name="label">
-                    <property name="text">
-                        <string>Inner Axes</string>
-                    </property>
-                </widget>
-            </item>
-            <item row="1" column="1">
-                <widget class="ToggleSwitch" name="inner_axes"/>
-            </item>
-            <item row="1" column="2">
-                <widget class="QLabel" name="label_outer_axes">
-                    <property name="text">
-                        <string>Outer Axes</string>
-                    </property>
-                </widget>
-            </item>
-            <item row="1" column="3">
-                <widget class="ToggleSwitch" name="outer_axes">
-                    <property name="checked" stdset="0">
-                        <bool>false</bool>
-                    </property>
-                </widget>
-            </item>
-            <item row="2" column="0" colspan="2">
-                <widget class="QGroupBox" name="x_axis_box">
-                    <property name="title">
-                        <string>X Axis</string>
-                    </property>
-                    <layout class="QGridLayout" name="gridLayout_4">
-                        <item row="5" column="0">
-                            <widget class="QLabel" name="x_grid_label">
-                                <property name="text">
-                                    <string>Grid</string>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="3" column="2">
-                            <widget class="ToggleSwitch" name="x_log">
-                                <property name="checked" stdset="0">
-                                    <bool>false</bool>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="2" column="0">
-                            <widget class="QLabel" name="x_max_label">
-                                <property name="text">
-                                    <string>Max</string>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="5" column="2">
-                            <widget class="ToggleSwitch" name="x_grid">
-                                <property name="checked" stdset="0">
-                                    <bool>false</bool>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="3" column="0">
-                            <widget class="QLabel" name="x_scale_label">
-                                <property name="text">
-                                    <string>Log</string>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="1" column="0" colspan="2">
-                            <widget class="QLabel" name="x_min_label">
-                                <property name="text">
-                                    <string>Min</string>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="0" column="0">
-                            <widget class="QLabel" name="x_label_label">
-                                <property name="text">
-                                    <string>Label</string>
-                                </property>
-                            </widget>
-                        </item>
-                        <item row="0" column="2">
-                            <widget class="QLineEdit" name="x_label"/>
-                        </item>
-                        <item row="1" column="2">
-                            <widget class="BECSpinBox" name="x_min"/>
-                        </item>
-                        <item row="2" column="2">
-                            <widget class="BECSpinBox" name="x_max"/>
-                        </item>
-                    </layout>
-                </widget>
-            </item>
             <item row="2" column="2" colspan="2">
                 <widget class="QGroupBox" name="y_axis_box">
                     <property name="title">
@@ -179,6 +88,87 @@
                     </layout>
                 </widget>
             </item>
+            <item row="1" column="3">
+                <widget class="ToggleSwitch" name="outer_axes">
+                    <property name="checked" stdset="0">
+                        <bool>false</bool>
+                    </property>
+                </widget>
+            </item>
+            <item row="1" column="0">
+                <widget class="QLabel" name="label">
+                    <property name="text">
+                        <string>Inner Axes</string>
+                    </property>
+                </widget>
+            </item>
+            <item row="2" column="0" colspan="2">
+                <widget class="QGroupBox" name="x_axis_box">
+                    <property name="title">
+                        <string>X Axis</string>
+                    </property>
+                    <layout class="QGridLayout" name="gridLayout_4">
+                        <item row="5" column="0">
+                            <widget class="QLabel" name="x_grid_label">
+                                <property name="text">
+                                    <string>Grid</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="3" column="2">
+                            <widget class="ToggleSwitch" name="x_log">
+                                <property name="checked" stdset="0">
+                                    <bool>false</bool>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="2" column="0">
+                            <widget class="QLabel" name="x_max_label">
+                                <property name="text">
+                                    <string>Max</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="5" column="2">
+                            <widget class="ToggleSwitch" name="x_grid">
+                                <property name="checked" stdset="0">
+                                    <bool>false</bool>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="3" column="0">
+                            <widget class="QLabel" name="x_scale_label">
+                                <property name="text">
+                                    <string>Log</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="1" column="0" colspan="2">
+                            <widget class="QLabel" name="x_min_label">
+                                <property name="text">
+                                    <string>Min</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="0" column="0">
+                            <widget class="QLabel" name="x_label_label">
+                                <property name="text">
+                                    <string>Label</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="0" column="2">
+                            <widget class="QLineEdit" name="x_label"/>
+                        </item>
+                        <item row="1" column="2">
+                            <widget class="BECSpinBox" name="x_min"/>
+                        </item>
+                        <item row="2" column="2">
+                            <widget class="BECSpinBox" name="x_max"/>
+                        </item>
+                    </layout>
+                </widget>
+            </item>
             <item row="0" column="0" colspan="4">
                 <layout class="QHBoxLayout" name="horizontalLayout">
                     <item>
@@ -191,8 +181,41 @@
                     <item>
                         <widget class="QLineEdit" name="title"/>
                     </item>
+                    <item>
+                        <widget class="QLabel" name="label_2">
+                            <property name="text">
+                                <string>Precision</string>
+                            </property>
+                        </widget>
+                    </item>
+                    <item>
+                        <widget class="QSpinBox" name="minimal_crosshair_precision">
+                            <property name="toolTip">
+                                <string>Minimal Crosshair Precision</string>
+                            </property>
+                            <property name="alignment">
+                                <set>Qt::AlignmentFlag::AlignCenter</set>
+                            </property>
+                            <property name="maximum">
+                                <number>20</number>
+                            </property>
+                            <property name="value">
+                                <number>3</number>
+                            </property>
+                        </widget>
+                    </item>
                 </layout>
             </item>
+            <item row="1" column="2">
+                <widget class="QLabel" name="label_outer_axes">
+                    <property name="text">
+                        <string>Outer Axes</string>
+                    </property>
+                </widget>
+            </item>
+            <item row="1" column="1">
+                <widget class="ToggleSwitch" name="inner_axes"/>
+            </item>
         </layout>
     </widget>
     <customwidgets>

bec_widgets/widgets/plots/setting_menus/axis_settings_vertical.ui

@@ -6,15 +6,84 @@
             <rect>
                 <x>0</x>
                 <y>0</y>
-                <width>241</width>
-                <height>526</height>
+                <width>250</width>
+                <height>612</height>
             </rect>
         </property>
         <property name="windowTitle">
             <string>Form</string>
         </property>
-        <layout class="QGridLayout" name="gridLayout">
-            <item row="4" column="0" colspan="2">
+        <layout class="QVBoxLayout" name="verticalLayout">
+            <item>
+                <widget class="QGroupBox" name="general_box">
+                    <property name="title">
+                        <string>General</string>
+                    </property>
+                    <layout class="QGridLayout" name="gridLayout_2">
+                        <item row="4" column="0">
+                            <widget class="QLabel" name="label_outer_axes">
+                                <property name="text">
+                                    <string>Outer Axes</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="4" column="1">
+                            <widget class="ToggleSwitch" name="outer_axes">
+                                <property name="checked" stdset="0">
+                                    <bool>false</bool>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="1" column="1">
+                            <widget class="QLineEdit" name="title"/>
+                        </item>
+                        <item row="3" column="0">
+                            <widget class="QLabel" name="label">
+                                <property name="text">
+                                    <string>Inner Axes</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="1" column="0">
+                            <widget class="QLabel" name="plot_title_label">
+                                <property name="text">
+                                    <string>Plot Title</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="3" column="1">
+                            <widget class="ToggleSwitch" name="inner_axes"/>
+                        </item>
+                        <item row="2" column="0">
+                            <widget class="QLabel" name="label_2">
+                                <property name="toolTip">
+                                    <string>Minimal Crosshair Precision</string>
+                                </property>
+                                <property name="text">
+                                    <string>Precision</string>
+                                </property>
+                            </widget>
+                        </item>
+                        <item row="2" column="1">
+                            <widget class="QSpinBox" name="minimal_crosshair_precision">
+                                <property name="toolTip">
+                                    <string>Minimal Crosshair Precision</string>
+                                </property>
+                                <property name="alignment">
+                                    <set>Qt::AlignmentFlag::AlignCenter</set>
+                                </property>
+                                <property name="maximum">
+                                    <number>20</number>
+                                </property>
+                                <property name="value">
+                                    <number>3</number>
+                                </property>
+                            </widget>
+                        </item>
+                    </layout>
+                </widget>
+            </item>
+            <item>
                 <widget class="QGroupBox" name="x_axis_box">
                     <property name="title">
                         <string>X Axis</string>
@@ -81,28 +150,7 @@
                     </layout>
                 </widget>
             </item>
-            <item row="0" column="0" colspan="2">
-                <layout class="QHBoxLayout" name="horizontalLayout">
-                    <item>
-                        <widget class="QLabel" name="plot_title_label">
-                            <property name="text">
-                                <string>Plot Title</string>
-                            </property>
-                        </widget>
-                    </item>
-                    <item>
-                        <widget class="QLineEdit" name="title"/>
-                    </item>
-                </layout>
-            </item>
-            <item row="2" column="0">
-                <widget class="QLabel" name="label_outer_axes">
-                    <property name="text">
-                        <string>Outer Axes</string>
-                    </property>
-                </widget>
-            </item>
-            <item row="5" column="0" colspan="2">
+            <item>
                 <widget class="QGroupBox" name="y_axis_box">
                     <property name="title">
                         <string>Y Axis</string>
@@ -169,23 +217,6 @@
                     </layout>
                 </widget>
             </item>
-            <item row="2" column="1">
-                <widget class="ToggleSwitch" name="outer_axes">
-                    <property name="checked" stdset="0">
-                        <bool>false</bool>
-                    </property>
-                </widget>
-            </item>
-            <item row="1" column="0">
-                <widget class="QLabel" name="label">
-                    <property name="text">
-                        <string>Inner Axes</string>
-                    </property>
-                </widget>
-            </item>
-            <item row="1" column="1">
-                <widget class="ToggleSwitch" name="inner_axes"/>
-            </item>
         </layout>
     </widget>
     <customwidgets>

bec_widgets/widgets/plots/waveform/waveform.py

@@ -86,6 +86,8 @@ class Waveform(PlotBase):
         "y_log.setter",
         "legend_label_size",
         "legend_label_size.setter",
+        "minimal_crosshair_precision",
+        "minimal_crosshair_precision.setter",
         # Waveform Specific RPC Access
         "curves",
         "x_mode",

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "bec_widgets"
-version = "2.8.1"
+version = "2.8.4"
 description = "BEC Widgets"
 requires-python = ">=3.10"
 classifiers = [

tests/end-2-end/conftest.py

@@ -5,11 +5,20 @@ import random
 import pytest
 
 from bec_widgets.cli.client_utils import BECGuiClient
+from bec_widgets.widgets.control.scan_control import ScanControl
 
 # pylint: disable=unused-argument
 # pylint: disable=redefined-outer-name
 
 
+@pytest.fixture(scope="function")
+def scan_control(qtbot, bec_client_lib):  # , mock_dev):
+    widget = ScanControl(client=bec_client_lib)
+    qtbot.addWidget(widget)
+    qtbot.waitExposed(widget)
+    yield widget
+
+
 @pytest.fixture(autouse=True)
 def threads_check_fixture(threads_check):
     """

tests/end-2-end/test_scan_control_e2e.py

@@ -3,15 +3,6 @@ import time
 import pytest
 
 from bec_widgets.utils.widget_io import WidgetIO
-from bec_widgets.widgets.control.scan_control import ScanControl
-
-
-@pytest.fixture(scope="function")
-def scan_control(qtbot, bec_client_lib):  # , mock_dev):
-    widget = ScanControl(client=bec_client_lib)
-    qtbot.addWidget(widget)
-    qtbot.waitExposed(widget)
-    yield widget
 
 
 def test_scan_control_populate_scans_e2e(scan_control):
@@ -27,6 +18,7 @@ def test_scan_control_populate_scans_e2e(scan_control):
         "monitor_scan",
         "acquire",
         "line_scan",
+        "custom_testing_scan",
     ]
     items = [
         scan_control.comboBox_scan_selection.itemText(i)

tests/end-2-end/test_with_plugins_e2e.py

@@ -0,0 +1,94 @@
+import time
+
+import pytest
+
+try:
+    from bec_testing_plugin.scans.metadata_schema.custom_test_scan_schema import CustomScanSchema
+except ImportError:
+    pytest.skip(reason="Requires plugin repo!", allow_module_level=True)
+
+from qtpy.QtWidgets import QGridLayout
+
+from bec_widgets.utils.widget_io import WidgetIO
+from bec_widgets.widgets.control.scan_control import ScanControl
+
+
+@pytest.fixture(scope="function")
+def scan_control(qtbot, bec_client_lib):  # , mock_dev):
+    widget = ScanControl(client=bec_client_lib)
+    qtbot.addWidget(widget)
+    qtbot.waitExposed(widget)
+    yield widget
+
+
+@pytest.mark.parametrize(
+    ["md", "valid"],
+    [
+        ({"treatment_description": "soaking", "treatment_temperature_k": 123}, True),
+        ({"treatment_description": "soaking", "treatment_temperature_k": "wrong type"}, False),
+        ({"treatment_description": "soaking", "wrong key": 123}, False),
+        (
+            {
+                "sample_name": "test sample",
+                "treatment_description": "soaking",
+                "treatment_temperature_k": 123,
+            },
+            True,
+        ),
+    ],
+)
+def test_scan_metadata_for_custom_scan(
+    scan_control: ScanControl, bec_client_lib, qtbot, md: dict, valid: bool
+):
+    client = bec_client_lib
+    queue = client.queue
+
+    scan_name = "custom_testing_scan"
+    kwargs = {"exp_time": 0.01, "steps": 10, "relative": True, "burst_at_each_point": 1}
+    args = {"device": "samx", "start": -5, "stop": 5}
+
+    scan_control.comboBox_scan_selection.setCurrentText(scan_name)
+
+    # Set kwargs in the UI
+    for kwarg_box in scan_control.kwarg_boxes:
+        for widget in kwarg_box.widgets:
+            for key, value in kwargs.items():
+                if widget.arg_name == key:
+                    WidgetIO.set_value(widget, value)
+                    break
+    # Set args in the UI
+    for widget in scan_control.arg_box.widgets:
+        for key, value in args.items():
+            if widget.arg_name == key:
+                WidgetIO.set_value(widget, value)
+                break
+
+    assert scan_control._metadata_form._md_schema == CustomScanSchema
+    assert not scan_control.button_run_scan.isEnabled()
+
+    def do_test():
+        # Set the metadata
+        grid: QGridLayout = scan_control._metadata_form._form_grid.layout()
+        for i in range(grid.rowCount()):  # type: ignore
+            field_name = grid.itemAtPosition(i, 0).widget().property("_model_field_name")
+            if (value_to_set := md.pop(field_name, None)) is not None:
+                grid.itemAtPosition(i, 1).widget().setValue(value_to_set)
+        # all values should be used
+        assert md == {}
+        assert scan_control.button_run_scan.isEnabled()
+
+        # Run the scan
+        scan_control.button_run_scan.click()
+        time.sleep(2)
+
+        last_scan = queue.scan_storage.storage[-1]
+        assert last_scan.status_message.info["scan_name"] == scan_name
+        assert last_scan.status_message.info["exp_time"] == kwargs["exp_time"]
+        assert last_scan.status_message.info["scan_motors"] == [args["device"]]
+        assert last_scan.status_message.info["num_points"] == kwargs["steps"]
+
+    if valid:
+        do_test()
+    else:
+        with pytest.raises(Exception):
+            do_test()

tests/unit_tests/test_bec_plugin_helper.py

@@ -2,7 +2,9 @@ from importlib.machinery import FileFinder, SourceFileLoader
 from types import ModuleType
 from unittest import mock
 
-from bec_widgets.utils.bec_plugin_helper import BECWidget, _all_widgets_from_all_submods
+from bec_widgets.utils.bec_plugin_helper import _all_widgets_from_all_submods
+from bec_widgets.utils.bec_widget import BECWidget
+from bec_widgets.utils.plugin_utils import BECClassContainer, BECClassInfo
 
 
 def test_all_widgets_from_module_no_submodules():
@@ -39,10 +41,17 @@ def test_all_widgets_from_module_with_submodules():
         mock.patch("importlib.util.module_from_spec", return_value=submodule),
         mock.patch(
             "bec_widgets.utils.bec_plugin_helper._get_widgets_from_module",
-            side_effect=[{"TestWidget": BECWidget}, {"SubWidget": BECWidget}],
+            side_effect=[
+                BECClassContainer(
+                    [BECClassInfo(name="TestWidget", module="", obj=BECWidget, file="")]
+                ),
+                BECClassContainer(
+                    [BECClassInfo(name="SubWidget", module="", obj=BECWidget, file="")]
+                ),
+            ],
         ),
     ):
-        widgets = _all_widgets_from_all_submods(module)
+        widgets = _all_widgets_from_all_submods(module).as_dict()
 
     assert widgets == {"TestWidget": BECWidget, "SubWidget": BECWidget}
 
@@ -54,8 +63,9 @@ def test_all_widgets_from_module_no_widgets():
     module = mock.MagicMock()
 
     with mock.patch(
-        "bec_widgets.utils.bec_plugin_helper._get_widgets_from_module", return_value={}
+        "bec_widgets.utils.bec_plugin_helper._get_widgets_from_module",
+        return_value=BECClassContainer([]),
     ):
-        widgets = _all_widgets_from_all_submods(module)
+        widgets = _all_widgets_from_all_submods(module).as_dict()
 
     assert widgets == {}

tests/unit_tests/test_client_plugin_widgets.py

@@ -7,6 +7,7 @@ from unittest.mock import MagicMock, call, patch
 
 from bec_widgets.cli import client
 from bec_widgets.cli.rpc.rpc_base import RPCBase
+from bec_widgets.utils.plugin_utils import BECClassContainer, BECClassInfo
 
 
 class _TestGlobalPlugin(RPCBase): ...
@@ -47,7 +48,9 @@ mock_client_module_duplicate.DeviceComboBox = _TestDuplicatePlugin
 )
 @patch(
     "bec_widgets.utils.bec_plugin_helper.get_all_plugin_widgets",
-    return_value={"DeviceComboBox": _TestDuplicatePlugin},
+    return_value=BECClassContainer(
+        [BECClassInfo(name="DeviceComboBox", obj=_TestDuplicatePlugin, module="", file="")]
+    ),
 )
 def test_duplicate_plugins_not_allowed(_, bec_logger: MagicMock):
     reload(client)

tests/unit_tests/test_crosshair.py

@@ -236,7 +236,7 @@ def test_update_coord_label_1D(plot_widget_with_crosshair):
     # Provide a test position
     pos = (10, 20)
     crosshair.update_coord_label(pos)
-    expected_text = f"({10:.3g}, {20:.3g})"
+    expected_text = f"({10:.3f}, {20:.3f})"
     # Verify that the coordinate label shows only the 1D coordinates (no intensity line)
     assert crosshair.coord_label.toPlainText() == expected_text
     label_pos = crosshair.coord_label.pos()
@@ -260,10 +260,54 @@ def test_update_coord_label_2D(image_widget_with_crosshair):
     ix = int(np.clip(0.5, 0, known_image.shape[0] - 1))  # 0
     iy = int(np.clip(1.2, 0, known_image.shape[1] - 1))  # 1
     intensity = known_image[ix, iy]  # Expected: 20
-    expected_text = f"({0.5:.3g}, {1.2:.3g})\nIntensity: {intensity:.3g}"
+    expected_text = f"({0.5:.3f}, {1.2:.3f})\nIntensity: {intensity:.3f}"
 
     assert crosshair.coord_label.toPlainText() == expected_text
     label_pos = crosshair.coord_label.pos()
     assert np.isclose(label_pos.x(), 0.5)
     assert np.isclose(label_pos.y(), 1.2)
     assert crosshair.coord_label.isVisible()
+
+
+def test_crosshair_precision_properties(plot_widget_with_crosshair):
+    """
+    Ensure Crosshair.precision and Crosshair.min_precision behave correctly
+    and that _current_precision() reflects changes immediately.
+    """
+    crosshair, plot_item = plot_widget_with_crosshair
+
+    assert crosshair.precision == 3
+    assert crosshair._current_precision() == 3
+
+    crosshair.precision = None
+    plot_item.vb.setXRange(0, 1_000, padding=0)
+    plot_item.vb.setYRange(0, 1_000, padding=0)
+    assert crosshair._current_precision() == crosshair.min_precision == 2  # default floor
+
+    crosshair.min_precision = 5
+    assert crosshair._current_precision() == 5
+
+    crosshair.precision = 1
+    assert crosshair._current_precision() == 1
+
+
+def test_crosshair_precision_properties_image(image_widget_with_crosshair):
+    """
+    The same precision/min_precision behaviour must apply for crosshairs attached
+    to ImageItem-based plots.
+    """
+    crosshair, plot_item = image_widget_with_crosshair
+
+    assert crosshair.precision == 3
+    assert crosshair._current_precision() == 3
+
+    crosshair.precision = None
+    plot_item.vb.setXRange(0, 1_000, padding=0)
+    plot_item.vb.setYRange(0, 1_000, padding=0)
+    assert crosshair._current_precision() == crosshair.min_precision == 2
+
+    crosshair.min_precision = 6
+    assert crosshair._current_precision() == 6
+
+    crosshair.precision = 2
+    assert crosshair._current_precision() == 2

tests/unit_tests/test_generate_cli_client.py

@@ -99,7 +99,7 @@ def test_client_generator_with_black_formatting():
 
         
         try:
-            _plugin_widgets = get_all_plugin_widgets()
+            _plugin_widgets = get_all_plugin_widgets().as_dict()
             plugin_client = get_plugin_client_module()
             Widgets = _WidgetsEnumType("Widgets", {name: name for name in _plugin_widgets} | _Widgets)
 

tests/unit_tests/test_plot_base_next_gen.py

@@ -349,3 +349,39 @@ def test_enable_fps_monitor_property(qtbot, mocked_client):
 
     pb.enable_fps_monitor = False
     assert pb.fps_monitor is None
+
+
+def test_minimal_crosshair_precision_default(qtbot, mocked_client):
+    """
+    By default PlotBase should expose a floor of 3 decimals, with no crosshair yet.
+    """
+    pb = create_widget(qtbot, PlotBase, client=mocked_client)
+    assert pb.minimal_crosshair_precision == 3
+    assert pb.crosshair is None
+
+
+def test_minimal_crosshair_precision_before_hook(qtbot, mocked_client):
+    """
+    If the floor is changed before hook_crosshair(), the new crosshair must pick it up.
+    """
+    pb = create_widget(qtbot, PlotBase, client=mocked_client)
+    pb.minimal_crosshair_precision = 5
+    pb.hook_crosshair()
+    assert pb.crosshair is not None
+    assert pb.crosshair.min_precision == 5
+
+
+def test_minimal_crosshair_precision_after_hook(qtbot, mocked_client):
+    """
+    Changing the floor after the crosshair exists should update it immediately
+    and emit the property_changed signal.
+    """
+    pb = create_widget(qtbot, PlotBase, client=mocked_client)
+    pb.hook_crosshair()
+    assert pb.crosshair is not None
+
+    with qtbot.waitSignal(pb.property_changed, timeout=500) as sig:
+        pb.minimal_crosshair_precision = 1
+
+    assert sig.args == ["minimal_crosshair_precision", 1]
+    assert pb.crosshair.min_precision == 1

tests/unit_tests/test_rpc_widget_handler.py

@@ -7,6 +7,7 @@ from bec_widgets.cli import client
 from bec_widgets.cli.rpc.rpc_base import RPCBase
 from bec_widgets.cli.rpc.rpc_widget_handler import RPCWidgetHandler
 from bec_widgets.utils.bec_widget import BECWidget
+from bec_widgets.utils.plugin_utils import BECClassContainer, BECClassInfo
 from bec_widgets.widgets.containers.dock.dock import BECDock
 
 
@@ -21,7 +22,12 @@ class _TestPluginWidget(BECWidget): ...
 
 @patch(
     "bec_widgets.cli.rpc.rpc_widget_handler.get_all_plugin_widgets",
-    return_value={"DeviceComboBox": _TestPluginWidget, "NewPluginWidget": _TestPluginWidget},
+    return_value=BECClassContainer(
+        [
+            BECClassInfo(name="DeviceComboBox", obj=_TestPluginWidget, module="", file=""),
+            BECClassInfo(name="NewPluginWidget", obj=_TestPluginWidget, module="", file=""),
+        ]
+    ),
 )
 def test_duplicate_plugins_not_allowed(_):
     handler = RPCWidgetHandler()

tests/unit_tests/test_scan_control.py

@@ -5,7 +5,7 @@ from unittest.mock import MagicMock, patch
 import pytest
 from bec_lib.endpoints import MessageEndpoints
 from bec_lib.messages import AvailableResourceMessage, ScanQueueHistoryMessage, ScanQueueMessage
-from qtpy.QtCore import QModelIndex, QPoint, Qt
+from qtpy.QtCore import QModelIndex, Qt
 
 from bec_widgets.utils.forms_from_types.items import StrMetadataField
 from bec_widgets.utils.widget_io import WidgetIO