Display title in docked plugins

skimage/viewer/viewers/core.py

@@ -124,6 +124,7 @@ class ImageViewer(QtGui.QMainWindow):
             dock_location = Qt.DockWidgetArea(location)
             dock = QtGui.QDockWidget()
             dock.setWidget(plugin)
+            dock.setWindowTitle(plugin.name)
             self.addDockWidget(dock_location, dock)
 
             horiz = (dock_areas['left'], dock_areas['right'])

viewer_examples/plugins/probabilistic_hough.py

@@ -32,6 +32,7 @@ canny_plugin = CannyPlugin()
 canny_viewer += canny_plugin
 
 hough_plugin = OverlayPlugin(image_filter=hough_lines)
+hough_plugin.name = 'Hough Lines'
 
 hough_plugin += Slider('line length', 0, 100, update_on='release')
 hough_plugin += Slider('line gap', 0, 20, update_on='release')