Hi Chris,
Here are some performance statistics for three different types of fonts:
TrueType:
Full = 1123ms
Subset = 1137ms
Difference = 1.2%
OpenType:
Full = 3497ms
Subset = 3512ms
Difference = 0.4%
Type 1:
Full = 1148ms
Subset = 1896ms
Difference = 39%
The reason for this can be easily explained. Type 1 fonts contain Postscript
code. OpenType and TrueType do not as they only contain binary data. This means
no special effort by them has to be made to parse, understand and reconstruct
what is effectively another high level programming language.
Because of this deficit, it may be best to leave it as an option as per
Vincent's suggestion unless the user wants to create a smaller file and incur
the hit. In the meantime I could investigate in the near future whether any
performance improvements could be made to speed up the process. It's likely
though this will never result in it being close to either OTF or TTF levels of
performance.
Best Regards,
Robert
> Date: Fri, 16 May 2014 08:33:52 +0100
> From: bowditch_ch...@hotmail.com
> To: fop-dev@xmlgraphics.apache.org
> Subject: Re: [VOTE] Add Type 1 subset support
>
> Hi Rob,
>
> You've done a great job in developing this feature. Before voting though
> I'd like to understand why the default is not to subset Type 1 fonts.
> Most users will want the smallest output file size possible. Not
> enabling it by default is also inconsistent with True Type fonts, whose
> default is to subset. This inconsistency could lead to confusion.
>
> Thanks,
>
> Chris
>
> On 14/05/2014 10:22, Robert Meyer wrote:
> > Hi All,
> >
> > Following on from the last failed vote for adding Type 1 subset
> > support, I have now put forward a modified patch and am ready to try
> > this again. The patch went up on Monday to address the issues and
> > comments made by Vincent and Luis. This vote will last 5 working days
> > and will finish next Wednesday at the same time.
> >
> > As always if you have any concerns or find anything please let me
> > know. If they are small I will try and address the issue before the
> > vote is finalized in order to avoid repeating this again. Please note
> > that all type 1 fonts will default to full embedding unless you use
> > the embedding-mode="subset" as per one of the recommendations from the
> > last vote.
> >
> > Here is my vote: +1
> >
> > Best Regards,
> >
> > Robert Meyer
>
