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#!/usr/bin/env python
"""
A simple example of sub-classing the Navcanvas
-- an alternative to simply putting a NavCanvas on your your own panel 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
self.Canvas.Bind(FloatCanvas.EVT_MOTION, 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()
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