[cairo] Change the coordinate system for drawing
lcairo-list at thax.hardliners.org
Fri Oct 21 03:25:09 PDT 2011
> I tried to use the methods, translated, rotated, transformed, but only
> take effect what I want to draw, for example a curve or a line.
AFAIUI you want the coordinate-transformation to apply also to any
input-events your DrawinArea receives?
This is not handled by cairo.
Any transformation you set in cairo only applies to outputs you make.
You'll have to transform the input coordinates yourself.
I've seen cairo_user_to_device() and cairo_device_to_user() in the C
API, which could be of help to you; there are certainly Python bindings
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