import wx # This module uses the new wx namespace from Main import opj #---------------------------------------------------------------------- msg = "This is some text that will appear behind the image..." class TestPanel(wx.Panel): def __init__(self, parent, log): self.log = log wx.Panel.__init__(self, parent, -1) self.Bind(wx.EVT_PAINT, self.OnPaint) def OnPaint(self, evt): dc = wx.PaintDC(self) dc.SetBackground(wx.Brush("WHITE")) dc.Clear() dc.SetFont(wx.Font(16, wx.SWISS, wx.NORMAL, wx.BOLD, True)) dc.DrawText("Bitmap alpha blending (on wxMSW and wxMac only)", (25,25)) bmp = wx.Bitmap(opj('bitmaps/toucan.png')) if "__WXGTK__" in wx.PlatformInfo: # try to make up for it a bit... bmp.SetMaskColour("black") dc.DrawBitmap(bmp, (25,100), True) dc.SetFont(self.GetFont()) y = 75 for line in range(10): y += dc.GetCharHeight() + 5 dc.DrawText(msg, (200, y)) dc.DrawBitmap(bmp, (250,100), True) #---------------------------------------------------------------------- def runTest(frame, nb, log): win = TestPanel(nb, log) return win #---------------------------------------------------------------------- overview = """

Images with Alpha

wxMSW and wxMac now support alpha channels of supported image types, and will properly blend that channel when drawing a bitmap. It is not supported yet on wxGTK, (if you would like to change that please submit a patch!)

On wxGTK this demo turns the alpha channel into a 1-bit mask, so yes, it looks like crap. Please help us fix it! """ if __name__ == '__main__': import sys,os import run run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])