[Chandler-dev] Making custom gradient brush is slow

[Heikki Toivonen]

Currently getting those events on the calendar rendered in that nice
gradient runs through some pretty slow looking code, and although we
cache gradient brushes we can still end up making quite a few of them,
meaning slow code. For example, in the resize test making those
gradients takes over 8% of the profile.

I searched around for wx and gradients, and ended up finding a couple of
things that look promising.

wx.DC, http://www.wxpython.org/docs/api/wx.DC-class.html, has methods
GradientFillLinear and GradientFillConcentric.

wx.GraphicsContext,
http://www.wxpython.org/docs/api/wx.GraphicsContext-class.html, has
methods CreateLinearGradientBrush and CreateRadialGradientBrush.

There is also a wxPython ButtonPanel.py demo which includes gradients,
and some other controls that support gradients as well, but these seem
more like potential hacks than solutions.

Could some of those approaches be used instead of our custom gradients?

-- 
  Heikki Toivonen


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