import wx
#----------------------------------------------------------------------
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)
txt = "On the Mac these squares should be transparent, if the\n" \
"CoreGraphics option is turned on. "
if "wxMac" in wx.PlatformInfo:
txt += "This build of wxPython\n" \
"%s have the CoreGraphics option turned on." \
% ("mac-cg" in wx.PlatformInfo and "DOES" or "DOS NOT")
wx.StaticText(self, -1, txt, (20, 20))
def OnPaint(self, evt):
dc = wx.PaintDC(self)
rect = wx.Rect(0,0, 100, 100)
for RGB, pos in [((178, 34, 34), ( 50, 90)),
(( 35, 142, 35), (110, 150)),
(( 0, 0, 139), (170, 90))
]:
r, g, b = RGB
penclr = wx.Colour(r, g, b, wx.ALPHA_OPAQUE)
brushclr = wx.Colour(r, g, b, 128) # half transparent
dc.SetPen(wx.Pen(penclr))
dc.SetBrush(wx.Brush(brushclr))
rect.SetPosition(pos)
dc.DrawRoundedRectangleRect(rect, 8)
#----------------------------------------------------------------------
def runTest(frame, nb, log):
win = TestPanel(nb, log)
return win
#----------------------------------------------------------------------
overview = """
Alpha Drawing
The wx.DC on Mac now supports alpha transparent drawing using pens and
brushes. This is accomplished by enabling the wx.Colour class to have
a fourth component for the alpha value, where 0 is fully transparent,
and 255 is fully opaque.
You can consider this a \"preview of coming attractions\" for the
other platforms.
"""
if __name__ == '__main__':
import sys,os
import run
run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])