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Add a GraphicsContext sample to the demo

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42424 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2006-10-26 03:34:54 +00:00
parent be68621e1e
commit 51aad6d34f
4 changed files with 145 additions and 7 deletions
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14
wxPython/demo/AlphaDrawing.py
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@@ -50,13 +50,13 @@ def runTest(frame, nb, log):
overview = """<html><body>
<h2><center>Alpha Drawing</center></h2>
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.
<p>You can consider this a \"preview of coming attractions\" for the
other platforms.
The wx.GCDC class is a class that implemented the wx.DC API using the
new wx.GraphicsContext class, and so it supports anti-aliased drawing
using pens and brushes, that can optionally also be drawn using an
alpha transparency. (On the Mac all the DC classes are using this new
implementation.) 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.
</body></html>
"""