wxPython/tests/test_gcdcDrawEllipticArc.py

   1 import wx
   2
   3 class Canvas(wx.Panel):
   4     def __init__(self, parent):
   5         wx.Panel.__init__(self, parent)
   6         self.Bind (wx.EVT_PAINT, self.OnPaint)
   7         self.bkg_brush = wx.Brush((190,190,255))
   8         self.v_pos = 100
   9
  10     def OnPaint(self, evt):
  11         dc = wx.PaintDC(self)
  12         dc = wx.GCDC(dc)
  13         dc.SetBackground(self.bkg_brush)
  14         dc.Clear()
  15         dc.DrawEllipticArc(100, 200, 200, 200-self.v_pos, 90,270)
  16         dc.DrawLine(100, 100, 100, 300)
  17
  18
  19 class MyFrame(wx.Frame):
  20     def __init__(self):
  21         wx.Frame.__init__(self, None, title="DrawEllipticArc")
  22         self.SetSize((640,480))
  23         self.canvas = Canvas(self)
  24         self.slider = wx.Slider(self, minValue=0, maxValue=100)
  25         box = wx.BoxSizer(wx.VERTICAL)
  26         box.Add(self.canvas, 1, wx.EXPAND)
  27         box.Add(self.slider, 0, wx.EXPAND)
  28         self.SetSizer(box)
  29         self.Show()
  30         self.CenterOnScreen()
  31         self.slider.Bind (wx.EVT_SLIDER, self.OnSlide)
  32
  33     def OnSlide(self, evt):
  34         self.canvas.v_pos = 100+self.slider.GetValue()
  35         self.canvas.Refresh(False)
  36
  37
  38 if __name__ == "__main__":
  39     app = wx.App(0)
  40     frame = MyFrame()
  41     app.MainLoop()