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Posted to fop-dev@xmlgraphics.apache.org by Alexander Kiel <al...@gmx.net> on 2009/09/15 09:23:39 UTC
State of OpenType Font Implementation
Hi,
I'm new to the fop-dev list but use FOP for some years already.
Recently I tried to use OpenType fonts. As documented FOP doesn't
support OpenType fonts yet.
The last and only discussion I could found on fop-dev is from 2006 [1].
Looking into the trunk, there is not really anything done with respect
to OpenType. So what is the state of OpenType support in 2009?
Sure I could possibly help implementing it.
Best Regards
Alex
[1]:
<http://www.mail-archive.com/fop-dev@xmlgraphics.apache.org/msg04892.html>
-
e-mail: alexanderkiel@gmx.net
web: www.alexanderkiel.net
Re: State of OpenType Font Implementation
Posted by Alexander Kiel <al...@gmx.net>.
Hi Max,
I apologize for my not so kind words.
I'm on the way to refactor the TTFFile part and hopefully add CFF
support. I will follow your suggestions and issue my patch.
Best Regards
Alex
-
e-mail: alexanderkiel@gmx.net
web: www.alexanderkiel.net
On Tue, 2009-09-15 at 17:28 +0200, Max Berger wrote:
> Alex,
>
> please note that the FOP code has been developed by multiple volunteers
> over the last ten years. As such, it does not always follow one clear
> path of design.
>
> That said, refactoring the FOP code for easier reading / maintainability
> is definitely wanted! The proper steps would be:
>
> - ensure that there are junit tests for the existing functionality. If
> not, add them.
>
> - ensure all junit tests run on your machine
>
> - refactor away, keeping in mind fop's conventions:
> http://xmlgraphics.apache.org/fop/dev/conventions.html
> Please note that FOP is currently still on Java 1.4.
>
> - ensure all junit tests still pass
>
> - create a bug report with [patch] in the subject line and attach your
> patch.
>
> Max
>
> Alexander Kiel schrieb:
> > Hi Jeremias,
> >
> > ok I think the first step would be to add CFF support into
> > org.apache.fop.fonts.truetype.TTFFile or to split TTFFile into
> > TrueTypeFile and OpenTypeFile and add CFF support only to OpenTypeFile.
> >
> > In the last hour I waded through TTFReader, TTFFile, TTFDirTabEntry and
> > the OpenType Spec [1]. What about refactoring this code mess as a whole?
> > I mean seriously, does all of the FOP code looks like this one?
> >
> >
> > Best Regards
> > Alex
> >
> >
> > [1]: <http://www.microsoft.com/typography/otspec/otff.htm>
> >
> > -
> > e-mail: alexanderkiel@gmx.net
> > web: www.alexanderkiel.net
> >
> >
> > On Tue, 2009-09-15 at 09:48 +0200, Jeremias Maerki wrote:
> >> Hi Alex,
> >>
> >> second good news today. I guess we need to define what should be covered
> >> by "Open Type". One important aspect is certainly CFF support (which
> >> I've just mentioned to Jonathan a few minutes ago). Another aspect is
> >> what Bertrand Delacrétaz started to look into: ligatures, character
> >> combination and such. CFF should be relatively easy to implement.
> >> Ligature support is going to be much harder as this will have effects
> >> into the layout engine.
> >>
> >> OpenType fonts that have TrueType glyphs and don't require the advanced
> >> typographical stuff are already supported today, but many OTF fonts have
> >> CFF glyph data. So that would be the first priority IMO.
> >>
> >> On 15.09.2009 09:23:39 Alexander Kiel wrote:
> >>> Hi,
> >>>
> >>> I'm new to the fop-dev list but use FOP for some years already.
> >>>
> >>> Recently I tried to use OpenType fonts. As documented FOP doesn't
> >>> support OpenType fonts yet.
> >>>
> >>> The last and only discussion I could found on fop-dev is from 2006 [1].
> >>> Looking into the trunk, there is not really anything done with respect
> >>> to OpenType. So what is the state of OpenType support in 2009?
> >>>
> >>> Sure I could possibly help implementing it.
> >>>
> >>> Best Regards
> >>> Alex
> >>>
> >>>
> >>> [1]:
> >>> <http://www.mail-archive.com/fop-dev@xmlgraphics.apache.org/msg04892.html>
> >>>
> >>> -
> >>> e-mail: alexanderkiel@gmx.net
> >>> web: www.alexanderkiel.net
> >>>
> >>
> >>
> >>
> >> Jeremias Maerki
> >>
> >>
>
>
Re: State of OpenType Font Implementation
Posted by Max Berger <ma...@berger.name>.
Alex,
please note that the FOP code has been developed by multiple volunteers
over the last ten years. As such, it does not always follow one clear
path of design.
That said, refactoring the FOP code for easier reading / maintainability
is definitely wanted! The proper steps would be:
- ensure that there are junit tests for the existing functionality. If
not, add them.
- ensure all junit tests run on your machine
- refactor away, keeping in mind fop's conventions:
http://xmlgraphics.apache.org/fop/dev/conventions.html
Please note that FOP is currently still on Java 1.4.
- ensure all junit tests still pass
- create a bug report with [patch] in the subject line and attach your
patch.
Max
Alexander Kiel schrieb:
> Hi Jeremias,
>
> ok I think the first step would be to add CFF support into
> org.apache.fop.fonts.truetype.TTFFile or to split TTFFile into
> TrueTypeFile and OpenTypeFile and add CFF support only to OpenTypeFile.
>
> In the last hour I waded through TTFReader, TTFFile, TTFDirTabEntry and
> the OpenType Spec [1]. What about refactoring this code mess as a whole?
> I mean seriously, does all of the FOP code looks like this one?
>
>
> Best Regards
> Alex
>
>
> [1]: <http://www.microsoft.com/typography/otspec/otff.htm>
>
> -
> e-mail: alexanderkiel@gmx.net
> web: www.alexanderkiel.net
>
>
> On Tue, 2009-09-15 at 09:48 +0200, Jeremias Maerki wrote:
>> Hi Alex,
>>
>> second good news today. I guess we need to define what should be covered
>> by "Open Type". One important aspect is certainly CFF support (which
>> I've just mentioned to Jonathan a few minutes ago). Another aspect is
>> what Bertrand Delacrétaz started to look into: ligatures, character
>> combination and such. CFF should be relatively easy to implement.
>> Ligature support is going to be much harder as this will have effects
>> into the layout engine.
>>
>> OpenType fonts that have TrueType glyphs and don't require the advanced
>> typographical stuff are already supported today, but many OTF fonts have
>> CFF glyph data. So that would be the first priority IMO.
>>
>> On 15.09.2009 09:23:39 Alexander Kiel wrote:
>>> Hi,
>>>
>>> I'm new to the fop-dev list but use FOP for some years already.
>>>
>>> Recently I tried to use OpenType fonts. As documented FOP doesn't
>>> support OpenType fonts yet.
>>>
>>> The last and only discussion I could found on fop-dev is from 2006 [1].
>>> Looking into the trunk, there is not really anything done with respect
>>> to OpenType. So what is the state of OpenType support in 2009?
>>>
>>> Sure I could possibly help implementing it.
>>>
>>> Best Regards
>>> Alex
>>>
>>>
>>> [1]:
>>> <http://www.mail-archive.com/fop-dev@xmlgraphics.apache.org/msg04892.html>
>>>
>>> -
>>> e-mail: alexanderkiel@gmx.net
>>> web: www.alexanderkiel.net
>>>
>>
>>
>>
>> Jeremias Maerki
>>
>>
--
http://max.berger.name/
OpenPGP ID: C93C5700 Fpr: AB6638CE472A499B3959 ADA2F989A2E5C93C5700
Re: State of OpenType Font Implementation
Posted by Alexander Kiel <al...@gmx.net>.
Hi Jeremias,
ok I think the first step would be to add CFF support into
org.apache.fop.fonts.truetype.TTFFile or to split TTFFile into
TrueTypeFile and OpenTypeFile and add CFF support only to OpenTypeFile.
In the last hour I waded through TTFReader, TTFFile, TTFDirTabEntry and
the OpenType Spec [1]. What about refactoring this code mess as a whole?
I mean seriously, does all of the FOP code looks like this one?
Best Regards
Alex
[1]: <http://www.microsoft.com/typography/otspec/otff.htm>
-
e-mail: alexanderkiel@gmx.net
web: www.alexanderkiel.net
On Tue, 2009-09-15 at 09:48 +0200, Jeremias Maerki wrote:
> Hi Alex,
>
> second good news today. I guess we need to define what should be covered
> by "Open Type". One important aspect is certainly CFF support (which
> I've just mentioned to Jonathan a few minutes ago). Another aspect is
> what Bertrand Delacrétaz started to look into: ligatures, character
> combination and such. CFF should be relatively easy to implement.
> Ligature support is going to be much harder as this will have effects
> into the layout engine.
>
> OpenType fonts that have TrueType glyphs and don't require the advanced
> typographical stuff are already supported today, but many OTF fonts have
> CFF glyph data. So that would be the first priority IMO.
>
> On 15.09.2009 09:23:39 Alexander Kiel wrote:
> > Hi,
> >
> > I'm new to the fop-dev list but use FOP for some years already.
> >
> > Recently I tried to use OpenType fonts. As documented FOP doesn't
> > support OpenType fonts yet.
> >
> > The last and only discussion I could found on fop-dev is from 2006 [1].
> > Looking into the trunk, there is not really anything done with respect
> > to OpenType. So what is the state of OpenType support in 2009?
> >
> > Sure I could possibly help implementing it.
> >
> > Best Regards
> > Alex
> >
> >
> > [1]:
> > <http://www.mail-archive.com/fop-dev@xmlgraphics.apache.org/msg04892.html>
> >
> > -
> > e-mail: alexanderkiel@gmx.net
> > web: www.alexanderkiel.net
> >
>
>
>
>
> Jeremias Maerki
>
>
Re: State of OpenType Font Implementation
Posted by Jeremias Maerki <de...@jeremias-maerki.ch>.
Hi Alex,
second good news today. I guess we need to define what should be covered
by "Open Type". One important aspect is certainly CFF support (which
I've just mentioned to Jonathan a few minutes ago). Another aspect is
what Bertrand Delacrétaz started to look into: ligatures, character
combination and such. CFF should be relatively easy to implement.
Ligature support is going to be much harder as this will have effects
into the layout engine.
OpenType fonts that have TrueType glyphs and don't require the advanced
typographical stuff are already supported today, but many OTF fonts have
CFF glyph data. So that would be the first priority IMO.
On 15.09.2009 09:23:39 Alexander Kiel wrote:
> Hi,
>
> I'm new to the fop-dev list but use FOP for some years already.
>
> Recently I tried to use OpenType fonts. As documented FOP doesn't
> support OpenType fonts yet.
>
> The last and only discussion I could found on fop-dev is from 2006 [1].
> Looking into the trunk, there is not really anything done with respect
> to OpenType. So what is the state of OpenType support in 2009?
>
> Sure I could possibly help implementing it.
>
> Best Regards
> Alex
>
>
> [1]:
> <http://www.mail-archive.com/fop-dev@xmlgraphics.apache.org/msg04892.html>
>
> -
> e-mail: alexanderkiel@gmx.net
> web: www.alexanderkiel.net
>
Jeremias Maerki