Point Select implementation

glue_jupyter/ipyvolume/common/tools.py

@@ -5,7 +5,8 @@
 from glue.core.roi import PolygonalROI, CircularROI, RectangularROI, Projected3dROI
 
 from glue.config import viewer_tool
-from glue.viewers.common.tool import CheckableTool
+from glue.viewers.common.tool import Tool, CheckableTool
+from glue.viewers.matplotlib
 
 __all__ = []
 
@@ -64,6 +65,24 @@ class IpyvolumeLassoMode(IpyvolumePolygonMode):
 
     selector = 'lasso'
 
+@viewer_tool
+class IpyvolumePointMode(IPyVolumeCheckableTool):
+    icon = 'glue_point'
+    tool_id = 'select:point'
+    action_text = 'Select Point'
+    tool_tip = 'Select a single pixel for e.g. spectral slicing'
+
+    # pretty sure this is wrong
+    selector = 'point'
+
+    def on_selection(self, data, other=None):
+        if data['type'] != self.selector:
+            return
+
+        if data['device']:
+            with self.viewer._output_widget or nullcontext():
+                x1, y1 = data['device']
+
 
 @viewer_tool
 class IpyvolumeCircleMode(IPyVolumeCheckableTool):

glue_jupyter/ipyvolume/common/viewer.py

@@ -19,7 +19,7 @@ class IpyvolumeBaseView(IPyWidgetView):
 
     _options_cls = Viewer3DStateWidget
 
-    tools = ['ipyvolume:lasso', 'ipyvolume:circle', 'ipyvolume:rectangle']
+    tools = ['ipyvolume:lasso', 'ipyvolume:circle', 'ipyvolume:rectangle', 'ipyvolume:point']
 
     def __init__(self, *args, **kwargs):