f1fabff5b2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28920 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
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import wx # This module uses the new wx namespace
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from Main import opj
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#----------------------------------------------------------------------
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msg = "Some text will appear mixed in the image's shadow..."
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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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def OnPaint(self, evt):
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dc = wx.PaintDC(self)
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dc.SetBackground(wx.Brush("WHITE"))
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dc.Clear()
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dc.SetFont(wx.Font(16, wx.SWISS, wx.NORMAL, wx.BOLD, True))
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dc.DrawText("Bitmap alpha blending (on all ports but gtk+ 1.2)",
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25,25)
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bmp = wx.Bitmap(opj('bitmaps/toucan.png'))
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if "gtk1" in wx.PlatformInfo:
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# Try to make up for lack of alpha support in wxGTK (gtk+
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# 1.2) by converting the alpha blending into a
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# transparency mask.
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# first convert to a wx.Image
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img = bmp.ConvertToImage()
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# Then convert the alpha channel to a mask, specifying the
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# threshold below which alpha will be made fully
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# transparent
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img.ConvertAlphaToMask(220)
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# convert back to a wx.Bitmap
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bmp = img.ConvertToBitmap()
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dc.DrawBitmap(bmp, 25,100, True)
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dc.SetFont(self.GetFont())
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y = 75
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for line in range(10):
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y += dc.GetCharHeight() + 5
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dc.DrawText(msg, 200, y)
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dc.DrawBitmap(bmp, 250,100, True)
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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>Images with Alpha</center></h2>
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wxMSW and wxMac now support alpha channels of supported image
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types, and will properly blend that channel when drawing a
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bitmap. It is not supported yet on wxGTK, (if you would like to
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change that please submit a patch!)
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<p>On wxGTK this demo turns the alpha channel into a 1-bit mask, so
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yes, it looks like crap. Please help us fix it!
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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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