27315f82f2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@44534 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
77 lines
2.3 KiB
Python
77 lines
2.3 KiB
Python
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import wx
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#----------------------------------------------------------------------
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class TestPanel(wx.Panel):
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def __init__(self, parent, log):
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self.log = log
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wx.Panel.__init__(self, parent, -1)
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self.Bind(wx.EVT_PAINT, self.OnPaint)
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txt = """\
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If this build of wxPython includes the new wx.GCDC class (which
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provides the wx.DC API on top of the new wx.GraphicsContext class)
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then these squares should be transparent.
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"""
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wx.StaticText(self, -1, txt, (20, 20))
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def OnPaint(self, evt):
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pdc = wx.PaintDC(self)
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try:
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dc = wx.GCDC(pdc)
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except:
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dc = pdc
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rect = wx.Rect(0,0, 100, 100)
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for RGB, pos in [((178, 34, 34), ( 50, 90)),
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(( 35, 142, 35), (110, 150)),
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(( 0, 0, 139), (170, 90))
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]:
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r, g, b = RGB
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penclr = wx.Colour(r, g, b, wx.ALPHA_OPAQUE)
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brushclr = wx.Colour(r, g, b, 128) # half transparent
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dc.SetPen(wx.Pen(penclr))
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dc.SetBrush(wx.Brush(brushclr))
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rect.SetPosition(pos)
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dc.DrawRoundedRectangleRect(rect, 8)
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# some additional testing stuff
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#dc.SetPen(wx.Pen(wx.Colour(0,0,255, 196)))
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#dc.SetBrush(wx.Brush(wx.Colour(0,0,255, 64)))
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#dc.DrawCircle(50, 275, 25)
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#dc.DrawEllipse(100, 275, 75, 50)
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#----------------------------------------------------------------------
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def runTest(frame, nb, log):
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win = TestPanel(nb, log)
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return win
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#----------------------------------------------------------------------
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overview = """<html><body>
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<h2><center>Alpha Drawing</center></h2>
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The wx.GCDC class is a class that implemented the wx.DC API using the
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new wx.GraphicsContext class, and so it supports anti-aliased drawing
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using pens and brushes, that can optionally also be drawn using an
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alpha transparency. (On the Mac all the DC classes are using this new
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implementation.) This is accomplished by enabling the wx.Colour class
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to have a fourth component for the alpha value, where 0 is fully
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transparent, and 255 is fully opaque.
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</body></html>
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"""
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if __name__ == '__main__':
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import sys,os
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import run
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run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
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