Working layout for slice widget

Author: dstansby

examples/slice.py

@@ -0,0 +1,15 @@
+"""
+1D slices
+=========
+"""
+import napari
+
+viewer = napari.Viewer()
+viewer.open_sample("napari", "kidney")
+
+viewer.window.add_plugin_dock_widget(
+    plugin_name="napari-matplotlib", widget_name="1D slice"
+)
+
+if __name__ == "__main__":
+    napari.run()

src/napari_matplotlib/__init__.py

@@ -6,3 +6,4 @@
 
 from .histogram import *  # NoQA
 from .scatter import *  # NoQA
+from .slice import *  # NoQA

src/napari_matplotlib/napari.yaml

@@ -10,9 +10,16 @@ contributions:
       python_name: napari_matplotlib:ScatterWidget
       title: Make a scatter plot
 
+    - id: napari-matplotlib.slice
+      python_name: napari_matplotlib:SliceWidget
+      title: Plot a 1D slice
+
   widgets:
     - command: napari-matplotlib.histogram
       display_name: Histogram
 
     - command: napari-matplotlib.scatter
       display_name: Scatter
+
+    - command: napari-matplotlib.slice
+      display_name: 1D slice

src/napari_matplotlib/slice.py

@@ -0,0 +1,39 @@
+import napari
+from qtpy.QtWidgets import QComboBox, QHBoxLayout, QSpinBox
+
+from napari_matplotlib.base import NapariMPLWidget
+
+__all__ = ["SliceWidget"]
+
+_dims = ["x", "y", "z"]
+
+
+class SliceWidget(NapariMPLWidget):
+    def __init__(self, napari_viewer: napari.viewer.Viewer):
+        super().__init__(napari_viewer)
+
+        self.layer = self.viewer.layers[-1]
+
+        button_layout = QHBoxLayout()
+        self.layout().addLayout(button_layout)
+
+        self.dim_selector = QComboBox()
+        button_layout.addWidget(self.dim_selector)
+
+        self.selectors = {}
+        for d in _dims:
+            self.selectors[d] = QSpinBox()
+            button_layout.addWidget(self.selectors[d])
+
+        self.update_dim_selector()
+        self.viewer.layers.selection.events.changed.connect(
+            self.update_dim_selector
+        )
+
+    def update_dim_selector(self) -> None:
+        """
+        Update options in the dimension selector from currently selected layer.
+        """
+        dims = ["x", "y", "z"]
+        self.dim_selector.clear()
+        self.dim_selector.addItems(dims[0 : self.layer.data.ndim])