Add the FloatCanvas demo modules

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73860 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/floatcanvas/SubClassNavCanvas.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+
+"""
+A simple example of sub-classing the Navcanvas
+
+-- an alternative to simply putting a NavCanvas on your yoru oen panle or whatever
+"""
+
+import wx
+
+## import the installed version
+from wx.lib.floatcanvas import NavCanvas, FloatCanvas
+
+## import a local version
+#import sys
+#sys.path.append("../")
+#from floatcanvas import NavCanvas, FloatCanvas
+
+class DrawFrame(wx.Frame):
+
+    """
+    A frame used for the Demo
+    """
+
+    def __init__(self, *args, **kwargs):
+        wx.Frame.__init__(self, *args, **kwargs)
+        self.CreateStatusBar()
+        
+        panel = NavPanel(self)
+        
+        self.Show()
+
+class NavPanel(NavCanvas.NavCanvas):
+    """
+    a subclass of NavCAnvas -- with some specific drawing code
+    """
+    def __init__(self, parent):
+        NavCanvas.NavCanvas.__init__(self,
+                                     parent,
+                                     ProjectionFun = None,
+                                     BackgroundColor = "DARK SLATE BLUE",
+                                     )
+        
+        self.parent_frame = parent
+        FloatCanvas.EVT_MOTION(self.Canvas, self.OnMove ) 
+        
+        # create the image:
+        self.Canvas.AddPolygon( ( (2,3),
+                                   (5,6),
+                                   (7,1), ),
+                                 FillColor = "red",
+                                 )
+
+        
+        wx.CallAfter(self.Canvas.ZoomToBB) # so it will get called after everything is created and sized
+                
+    def OnMove(self, event):
+        """
+        Updates the status bar with the world coordinates
+
+        """
+        self.parent_frame.SetStatusText("%f, %f"%tuple(event.Coords))
+        pass
+
+app = wx.App(False)
+F = DrawFrame(None, title="FloatCanvas Demo App", size=(700,700) )
+app.MainLoop()