| | 1 | |
| | 2 | import wx # This module uses the new wx namespace |
| | 3 | from Main import opj |
| | 4 | |
| | 5 | |
| | 6 | #---------------------------------------------------------------------- |
| | 7 | |
| | 8 | msg = "Some text will appear mixed in the image's shadow..." |
| | 9 | |
| | 10 | class TestPanel(wx.Panel): |
| | 11 | def __init__(self, parent, log): |
| | 12 | self.log = log |
| | 13 | wx.Panel.__init__(self, parent, -1) |
| | 14 | |
| | 15 | self.Bind(wx.EVT_PAINT, self.OnPaint) |
| | 16 | |
| | 17 | |
| | 18 | def OnPaint(self, evt): |
| | 19 | dc = wx.PaintDC(self) |
| | 20 | dc.SetBackground(wx.Brush("WHITE")) |
| | 21 | dc.Clear() |
| | 22 | |
| | 23 | dc.SetFont(wx.Font(16, wx.SWISS, wx.NORMAL, wx.BOLD, True)) |
| | 24 | dc.DrawText("Bitmap alpha blending (on all ports but gtk+ 1.2)", |
| | 25 | 25,25) |
| | 26 | |
| | 27 | bmp = wx.Bitmap(opj('bitmaps/toucan.png')) |
| | 28 | if "gtk1" in wx.PlatformInfo: |
| | 29 | # Try to make up for lack of alpha support in wxGTK (gtk+ |
| | 30 | # 1.2) by converting the alpha blending into a |
| | 31 | # transparency mask. |
| | 32 | |
| | 33 | # first convert to a wx.Image |
| | 34 | img = bmp.ConvertToImage() |
| | 35 | |
| | 36 | # Then convert the alpha channel to a mask, specifying the |
| | 37 | # threshold below which alpha will be made fully |
| | 38 | # transparent |
| | 39 | img.ConvertAlphaToMask(220) |
| | 40 | |
| | 41 | # convert back to a wx.Bitmap |
| | 42 | bmp = img.ConvertToBitmap() |
| | 43 | |
| | 44 | |
| | 45 | dc.DrawBitmap(bmp, 25,100, True) |
| | 46 | |
| | 47 | dc.SetFont(self.GetFont()) |
| | 48 | y = 75 |
| | 49 | for line in range(10): |
| | 50 | y += dc.GetCharHeight() + 5 |
| | 51 | dc.DrawText(msg, 200, y) |
| | 52 | dc.DrawBitmap(bmp, 250,100, True) |
| | 53 | |
| | 54 | |
| | 55 | |
| | 56 | #---------------------------------------------------------------------- |
| | 57 | |
| | 58 | def runTest(frame, nb, log): |
| | 59 | win = TestPanel(nb, log) |
| | 60 | return win |
| | 61 | |
| | 62 | #---------------------------------------------------------------------- |
| | 63 | |
| | 64 | |
| | 65 | |
| | 66 | overview = """<html><body> |
| | 67 | <h2><center>Images with Alpha</center></h2> |
| | 68 | |
| | 69 | wxMSW and wxMac now support alpha channels of supported image |
| | 70 | types, and will properly blend that channel when drawing a |
| | 71 | bitmap. It is not supported yet on wxGTK, (if you would like to |
| | 72 | change that please submit a patch!) |
| | 73 | |
| | 74 | <p>On wxGTK this demo turns the alpha channel into a 1-bit mask, so |
| | 75 | yes, it looks like crap. Please help us fix it! |
| | 76 | |
| | 77 | </body></html> |
| | 78 | """ |
| | 79 | |
| | 80 | |
| | 81 | |
| | 82 | if __name__ == '__main__': |
| | 83 | import sys,os |
| | 84 | import run |
| | 85 | run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:]) |
| | 86 | |
projects / wxWidgets.git / blame_incremental