Module cmapmenu

source code

Defines CMapMenu, a wx submenu containing colormaps.

=== Example ===

The following defines a context menu with mapper:

import wx
import cmapmenu

...
def onContextMenu(self,event):
    popup = wx.Menu()
    item = popup.Append(wx.ID_ANY,'&Save image', 'Save image as PNG')
    wx.EVT_MENU(self, item.GetId(), self.onSaveImage)
    item = popup.Append(wx.ID_ANY,'&Grid on/off', 'Toggle grid lines')
    wx.EVT_MENU(self, item.GetId(), self.onGridToggle)
    item = popup.AppendMenu(wx.ID_ANY, "Colourmaps",
                            CMapMenu(self, self.mapper, self.canvas))

The assumption is that mapper and canvas are attributes of the panel for which the context menu is defined. When the new colour map is selected, the mapper will be reset and the figure redrawn.

Sometimes you will want to do more than just update the mapper for the current canvas. You may for example want to record the new colormap name in the application settings file so that it will be there when the application is reloaded. To do this, call CMapMenu(callback=self.OnColormap). This will call the method OnColormap with the parameter name giving the name of the colormap.