86 lines
2.1 KiB
Python
86 lines
2.1 KiB
Python
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import wx
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import os
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print "PID:", os.getpid()
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count = 0
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class ResultsFrame(wx.Frame):
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def __init__(self, parent, bmp):
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global count
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count += 1
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wx.Frame.__init__(self, parent, title=str(count), size=(100,100))
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p = wx.Panel(self)
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sb = wx.StaticBitmap(p, -1, bmp, (20,20))
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self.Show()
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class TestPanel(wx.Panel):
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def __init__(self, parent):
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wx.Panel.__init__(self, parent)
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b = wx.Button(self, -1, "Test", (50,50))
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self.Bind(wx.EVT_BUTTON, self.OnButton, b)
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def RunTest(self, bdc, bg, fg):
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# draw to the buffered dc
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bdc.SetBackground(wx.Brush(bg))
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bdc.Clear()
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bdc.SetPen(wx.Pen(fg, 2))
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bdc.DrawLine(0,0, 30,30)
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bdc.DrawLine(0,30, 30,0)
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# now bilt it to a bitmap
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bmp = wx.EmptyBitmap(30,30)
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mdc = wx.MemoryDC()
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mdc.SelectObject(bmp)
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mdc.Blit(0,0, 30,30, bdc, 0,0)
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del mdc
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# display the results
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ResultsFrame(self, bmp)
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def OnButton(self, evt):
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# 1. test a buffered dc not using a buffer bitmap
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bdc = wx.BufferedDC(wx.ClientDC(self), self.GetSize())
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self.RunTest(bdc, "yellow", "red")
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del bdc
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# 2. now do one that does have a buffer bitmap
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buf = wx.EmptyBitmap(100,100)
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bdc = wx.BufferedDC(wx.ClientDC(self), buf)
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self.RunTest(bdc, "red", "blue")
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del bdc
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# 3. now one without a real DC
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buf = wx.EmptyBitmap(100,100)
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bdc = wx.BufferedDC(None, buf)
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self.RunTest(bdc, "purple", "yellow")
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del bdc
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# 4. finally test a real unbuffered DC
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dc = wx.ClientDC(self)
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self.RunTest(dc, "red", "white")
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# blit from the last buffer back to the main window
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buf.SetMaskColour("yellow")
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mdc = wx.MemoryDC()
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mdc.SelectObject(buf)
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dc.Blit(100,100,30,30, mdc, 0,0, useMask=True)
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app = wx.App(0)
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frm = wx.Frame(None)
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pnl = TestPanel(frm)
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frm.Show()
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app.MainLoop()
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