Merge b68c99a into ca06549

chaco/abstract_colormap.py

@@ -1,6 +1,6 @@
 """ Defines the base class for color maps
 """
-from traits.api import Enum, HasTraits, Instance
+from traits.api import Enum, Event, HasTraits, Instance
 
 from data_range_1d import DataRange1D
 
@@ -15,6 +15,9 @@ class AbstractColormap(HasTraits):
     # The color depth of the colors to use.
     color_depth = Enum('rgba', 'rgb')
 
+    # A generic "update" event that generally means that anything that relies
+    # on this mapper for visual output should do a redraw or repaint.
+    updated = Event
 
     def map_screen(self, val):
         """

chaco/colormapped_scatterplot.py

@@ -9,7 +9,7 @@
 
 # Enthought library imports
 from kiva.constants import STROKE
-from traits.api import Dict, Enum, Float, Instance
+from traits.api import Dict, Enum, Float, Instance, on_trait_change
 from traitsui.api import Item, RangeEditor
 
 # Local, relative imports
@@ -414,6 +414,11 @@ def _color_mapper_changed(self, old, new):
 
         return
 
+    @on_trait_change('color_mapper:updated')
+    def _color_mapper_updated(self):
+        self.invalidate_draw()
+        self.request_redraw()
+
     def _fill_alpha_changed(self):
         self.invalidate_draw()
         self.request_redraw()