projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 8a88769e RD |
1 | |
| 2 | import wx # This module uses the new wx namespace | |
| 3 | from Main import opj | |
| 4 | ||
| 5 | ||
| 6 | #---------------------------------------------------------------------- | |
| 7 | ||
| f1fabff5 | 8 | msg = "Some text will appear mixed in the image's shadow..." |
| 8a88769e RD |
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)) | |
| f1fabff5 | 24 | dc.DrawText("Bitmap alpha blending (on all ports but gtk+ 1.2)", |
| d7403ad2 RD |
25 | 25,25) |
| 26 | ||
| 8a88769e | 27 | bmp = wx.Bitmap(opj('bitmaps/toucan.png')) |
| f1fabff5 RD |
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 | |
| c0d9c29d | 34 | img = bmp.ConvertToImage() |
| f1fabff5 RD |
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 | |
| c0d9c29d | 42 | bmp = img.ConvertToBitmap() |
| f1fabff5 | 43 | |
| 803a0ba6 | 44 | |
| d7403ad2 | 45 | dc.DrawBitmap(bmp, 25,100, True) |
| 8a88769e RD |
46 | |
| 47 | dc.SetFont(self.GetFont()) | |
| 48 | y = 75 | |
| 49 | for line in range(10): | |
| 50 | y += dc.GetCharHeight() + 5 | |
| d7403ad2 RD |
51 | dc.DrawText(msg, 200, y) |
| 52 | dc.DrawBitmap(bmp, 250,100, True) | |
| 8a88769e RD |
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 | ||
| 8e43747f | 69 | wxMSW and wxMac now support alpha channels of supported image |
| 6a8fa617 | 70 | types, and will properly blend that channel when drawing a |
| 8a88769e RD |
71 | bitmap. It is not supported yet on wxGTK, (if you would like to |
| 72 | change that please submit a patch!) | |
| 73 | ||
| 803a0ba6 RD |
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 | ||
| 8a88769e RD |
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 |