Re: State of OpenType Font Implementation
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: alexanderk...@gmx.net web:www.alexanderkiel.net Jeremias Maerki
Re: State of OpenType Font Implementation
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: alexanderk...@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: alexanderk...@gmx.net web:www.alexanderkiel.net Jeremias Maerki signature.asc Description: This is a digitally signed message part
Re: State of OpenType Font Implementation
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: alexanderk...@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: alexanderk...@gmx.net web:www.alexanderkiel.net Jeremias Maerki -- http://max.berger.name/ OpenPGP ID: C93C5700 Fpr: AB6638CE472A499B3959 ADA2F989A2E5C93C5700 signature.asc Description: OpenPGP digital signature
Re: State of OpenType Font Implementation
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: alexanderk...@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: alexanderk...@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: alexanderk...@gmx.net web:www.alexanderkiel.net Jeremias Maerki signature.asc Description: This is a digitally signed message part
