projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 59780c72 RD |
1 | |
| 2 | import wx | |
| 3 | ||
| 4 | #---------------------------------------------------------------------- | |
| 5 | ||
| 6 | class TestPanel(wx.Panel): | |
| 7 | def __init__(self, parent, log): | |
| 8 | self.log = log | |
| 9 | wx.Panel.__init__(self, parent, -1) | |
| 59780c72 RD |
10 | self.Bind(wx.EVT_PAINT, self.OnPaint) |
| 11 | ||
| 41c4b3ef RD |
12 | txt = """\ |
| 13 | If this build of wxPython includes the new wx.GCDC class (which | |
| 14 | provides the wx.DC API on top of the new wx.GraphicsContext class) | |
| 15 | then these squares should be transparent. | |
| 16 | """ | |
| 2f72b58a RD |
17 | wx.StaticText(self, -1, txt, (20, 20)) |
| 18 | ||
| 19 | ||
| 59780c72 | 20 | def OnPaint(self, evt): |
| 41c4b3ef RD |
21 | pdc = wx.PaintDC(self) |
| 22 | try: | |
| 23 | dc = wx.GCDC(pdc) | |
| 24 | except: | |
| 25 | dc = pdc | |
| 59780c72 | 26 | rect = wx.Rect(0,0, 100, 100) |
| 2f72b58a RD |
27 | for RGB, pos in [((178, 34, 34), ( 50, 90)), |
| 28 | (( 35, 142, 35), (110, 150)), | |
| 29 | (( 0, 0, 139), (170, 90)) | |
| 59780c72 RD |
30 | ]: |
| 31 | r, g, b = RGB | |
| 32 | penclr = wx.Colour(r, g, b, wx.ALPHA_OPAQUE) | |
| 33 | brushclr = wx.Colour(r, g, b, 128) # half transparent | |
| 34 | dc.SetPen(wx.Pen(penclr)) | |
| 35 | dc.SetBrush(wx.Brush(brushclr)) | |
| 36 | rect.SetPosition(pos) | |
| d1a7e73e | 37 | dc.DrawRoundedRectangleRect(rect, 8) |
| 59780c72 RD |
38 | |
| 39 | ||
| 40 | #---------------------------------------------------------------------- | |
| 41 | ||
| 42 | def runTest(frame, nb, log): | |
| 43 | win = TestPanel(nb, log) | |
| 44 | return win | |
| 45 | ||
| 46 | #---------------------------------------------------------------------- | |
| 47 | ||
| 48 | ||
| 49 | ||
| 50 | overview = """<html><body> | |
| 51 | <h2><center>Alpha Drawing</center></h2> | |
| 52 | ||
| 51aad6d3 RD |
53 | The wx.GCDC class is a class that implemented the wx.DC API using the |
| 54 | new wx.GraphicsContext class, and so it supports anti-aliased drawing | |
| 55 | using pens and brushes, that can optionally also be drawn using an | |
| 56 | alpha transparency. (On the Mac all the DC classes are using this new | |
| 57 | implementation.) This is accomplished by enabling the wx.Colour class | |
| 58 | to have a fourth component for the alpha value, where 0 is fully | |
| 59 | transparent, and 255 is fully opaque. | |
| 2f72b58a | 60 | |
| 59780c72 RD |
61 | </body></html> |
| 62 | """ | |
| 63 | ||
| 64 | ||
| 65 | ||
| 66 | if __name__ == '__main__': | |
| 67 | import sys,os | |
| 68 | import run | |
| 69 | run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:]) | |
| 70 |