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