Am Montag, den 17.08.2009, 23:48 +0200 schrieb Greg Landrum:
> Hi Uwe,
>
> On Mon, Aug 17, 2009 at 11:04 PM, Uwe Hoffmann<[email protected]> wrote:
> >>
> > try:
> > stride = cairo.ImageSurface.format_stride_for_width (
> > cairo.FORMAT_ARGB32,
> > image.size[0])
> > if stride != image.size[0] * 4:
> > raise Exception ,"invalid stride"
> > except AttributeError:
> > stride = image.size[0] * 4
> >
>
> It probably makes sense for me to go ahead and make this change in
> subversion as well, doesn't it?
in principle yes, but it was a quick hack to get the ball running.
it's possible that some other AttributeErrors will be masked so i think
the following version will be better.
try:
cairo.ImageSurface.format_stride_for_width
except AttributeError:
stride = image.size[0] * 4
else:
stride = cairo.ImageSurface.format_stride_for_width (
cairo.FORMAT_ARGB32,
image.size[0])
if stride != image.size[0] * 4:
raise Exception ,"invalid stride"
i found some other problem if pycairo is not available:
Chem.Draw.__init__.py should contain the follwing line (MolToImage):
*** 24,29 ****
--- 24,30 ----
from cairoCanvas import Canvas
useCAIRO=True
except:
+ useCAIRO=False
from rdkit.sping.PIL.pidPIL import PILCanvas as Canvas
canvas = Canvas(size=size,name='MolToImageFile')
img = canvas._image
otherwise useCairo can be used without defined.
regards
Uwe
