+# creates a colour wxButton with selectable color
+# button click provides a colour selection box
+# button colour will change to new colour
+# GetColour method to get the selected colour
+
+# Updates:
+# call back to function if changes made
+
+# Cliff Wells, logiplexsoftware@earthlink.net:
+# - Made ColourSelect into "is a button" rather than "has a button"
+# - Added label parameter and logic to adjust the label colour according to the background
+# colour
+# - Added id argument
+# - Rearranged arguments to more closely follow wx conventions
+# - Simplified some of the code
+
+# Cliff Wells, 2002/02/07
+# - Added ColourSelect Event
+
+# 12/01/2003 - Jeff Grimmett (grimmtooth@softhome.net)
+#
+# o Updated for 2.5 compatability.
+#
+
+"""
+Provides a `ColourSelect` button that, when clicked, will display a
+colour selection dialog. The selected colour is displayed on the
+button itself.
+"""
+
+#----------------------------------------------------------------------------
+
+import wx
+
+#----------------------------------------------------------------------------
+
+wxEVT_COMMAND_COLOURSELECT = wx.NewEventType()
+
+class ColourSelectEvent(wx.PyCommandEvent):
+ def __init__(self, id, value):
+ wx.PyCommandEvent.__init__(self, id = id)
+ self.SetEventType(wxEVT_COMMAND_COLOURSELECT)
+ self.value = value
+
+ def GetValue(self):
+ return self.value
+
+EVT_COLOURSELECT = wx.PyEventBinder(wxEVT_COMMAND_COLOURSELECT, 1)
+
+#----------------------------------------------------------------------------
+
+class ColourSelect(wx.BitmapButton):
+ def __init__(self, parent, id, label="", colour=wx.BLACK,
+ pos=wx.DefaultPosition, size=wx.DefaultSize,
+ callback=None, style=0):
+ if label:
+ w, h = parent.GetTextExtent(label)
+ w += 6
+ h += 6
+ else:
+ w, h = 20, 20
+ wx.BitmapButton.__init__(self, parent, id, wx.EmptyBitmap(w,h),
+ pos=pos, size=size, style=style|wx.BU_AUTODRAW)
+
+ if type(colour) == type( () ):
+ colour = wx.Colour(*colour)
+ self.colour = colour
+ self.SetLabel(label)
+ self.callback = callback
+ bmp = self.MakeBitmap()
+ self.SetBitmap(bmp)
+ parent.Bind(wx.EVT_BUTTON, self.OnClick, self)
+
+
+ def GetColour(self):
+ return self.colour
+
+ def GetValue(self):
+ return self.colour
+
+ def SetValue(self, colour):
+ self.SetColour(colour)
+
+ def SetColour(self, colour):
+ if type(colour) == tuple:
+ colour = wx.Colour(*colour)
+ if type(colour) == str:
+ colour = wx.NamedColour(colour)
+
+ self.colour = colour
+ bmp = self.MakeBitmap()
+ self.SetBitmap(bmp)
+
+
+ def SetLabel(self, label):
+ self.label = label
+
+ def GetLabel(self):
+ return self.label
+
+
+ def MakeBitmap(self):
+ bdr = 8
+ width, height = self.GetSize()
+
+ # yes, this is weird, but it appears to work around a bug in wxMac
+ if "wxMac" in wx.PlatformInfo and width == height:
+ height -= 1
+
+ bmp = wx.EmptyBitmap(width-bdr, height-bdr)
+ dc = wx.MemoryDC()
+ dc.SelectObject(bmp)
+ dc.SetFont(self.GetFont())
+ label = self.GetLabel()
+ # Just make a little colored bitmap
+ dc.SetBackground(wx.Brush(self.colour))
+ dc.Clear()
+
+ if label:
+ # Add a label to it
+ avg = reduce(lambda a, b: a + b, self.colour.Get()) / 3
+ fcolour = avg > 128 and wx.BLACK or wx.WHITE
+ dc.SetTextForeground(fcolour)
+ dc.DrawLabel(label, (0,0, width-bdr, height-bdr),
+ wx.ALIGN_CENTER)
+
+ dc.SelectObject(wx.NullBitmap)
+ return bmp
+
+
+ def SetBitmap(self, bmp):
+ self.SetBitmapLabel(bmp)
+ self.SetBitmapSelected(bmp)
+ self.SetBitmapDisabled(bmp)
+ self.SetBitmapFocus(bmp)
+ self.SetBitmapSelected(bmp)
+ self.Refresh()
+
+
+ def OnChange(self):
+ wx.PostEvent(self, ColourSelectEvent(self.GetId(), self.GetValue()))
+ if self.callback is not None:
+ self.callback()
+
+ def OnClick(self, event):
+ data = wx.ColourData()
+ data.SetChooseFull(True)
+ data.SetColour(self.colour)
+ dlg = wx.ColourDialog(wx.GetTopLevelParent(self), data)
+ changed = dlg.ShowModal() == wx.ID_OK
+
+ if changed:
+ data = dlg.GetColourData()
+ self.SetColour(data.GetColour())
+ dlg.Destroy()
+
+ # moved after dlg.Destroy, since who knows what the callback will do...
+ if changed:
+ self.OnChange()