Ken McIvor wrote:
> The problem I foresee is that the Agg renderer's RGBA data has to
> be converted to RGB before a wxImage can be created by convert_agg2image().
As if by magic, this from Robin Dunn today:
> You may want to take a look at my CVS commits for the last couple weeks.
> I've now got some raw bitmap access code in place. Both 2.6 and 2.7 will
> have wx.BitmapFromBuffer and wx.BitmapFromBufferRGBA factory functions which
> can copy from a buffer object directly into the bitmap's pixel buffer, and
> 2.7 will also have wx.NativePixelData and wx.AlphaPixelData which allow
> direct access to the pixel buffer from Python. (The latter needed a bug fix
> that I'm not sure (yet) can be backported to 2.6...) For example, I can now
> do this (in a PyShell):
>
> >>> import wx
> >>> import numarray
> >>> f = wx.Frame(None)
> >>> p = wx.Panel(f)
> >>> dc = wx.ClientDC(p)
> >>> f.Show()
> >>> dim=100
> >>> R=0; G=1; B=2; A=3
> >>> arr = numarray.array(shape=(dim, dim, 4), typecode='u1')
> >>> for row in xrange(dim):
> ... for col in xrange(dim):
> ... arr[row,col,R] = 0
> ... arr[row,col,G] = 0
> ... arr[row,col,B] = 255
> ... arr[row,col,A] = int(col * 255.0 / dim)
> ...
> >>> bmp = wx.BitmapFromBufferRGBA(dim, dim, arr)
> >>> dc.DrawBitmap(bmp, 20, 20, True)
This is looking pretty promising.
-Chris
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