Also add handle style to ThickLineTool

skimage/viewer/canvastools/linetool.py

@@ -151,6 +151,9 @@ class ThickLineTool(LineTool):
         Maximum pixel distance allowed when selecting control handle.
     line_props : dict
         Properties for :class:`matplotlib.lines.Line2D`.
+    handle_props : dict
+        Marker properties for the handles (also see
+        :class:`matplotlib.lines.Line2D`).
 
     Attributes
     ----------
@@ -159,13 +162,14 @@ class ThickLineTool(LineTool):
     """
 
     def __init__(self, viewer, on_move=None, on_enter=None, on_release=None,
-                 on_change=None, maxdist=10, line_props=None):
+                 on_change=None, maxdist=10, line_props=None, handle_props=None):
         super(ThickLineTool, self).__init__(viewer,
                                             on_move=on_move,
                                             on_enter=on_enter,
                                             on_release=on_release,
                                             maxdist=maxdist,
-                                            line_props=line_props)
+                                            line_props=line_props,
+                                            handle_props=handle_props)
 
         if on_change is None:
             def on_change(*args):

skimage/viewer/tests/test_tools.py

@@ -104,7 +104,8 @@ def test_thick_line_tool():
     img = data.camera()
     viewer = ImageViewer(img)
 
-    tool = ThickLineTool(viewer, maxdist=10)
+    tool = ThickLineTool(viewer, maxdist=10, line_props=dict(color='red'),
+                         handle_props=dict(markersize=5))
     tool.end_points = get_end_points(img)
 
     do_event(viewer, 'scroll', button='up')