Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On Thu, Nov 22, 2018 at 4:15 PM Ulrike Fischer wrote: > Am Thu, 22 Nov 2018 14:46:57 +0100 schrieb luigi scarso: > > >> > >> A palette entry index value of 0x is a special case indicating > >> that the text foreground color (defined by a higher-level client) > >> should be used and shall not be treated as actual index into CPAL > >> ColorRecord array. > >> > >> > > > > " the text foreground color (defined by a higher-level client) > > should be used" doesn't mean "you MUST take the current color > > text" or even "you MUST use black" In fact "defined by a > > higher-level client" means that I could define a palette such > > that each glyph marked with 0x has its own color based on my > > palette --- not necessarily the *same* color. > > Sounds as if there is some room for interpretation ;-). But assume > that I want in my example the 0x to be interpretated as "the > current text color", so the currently blue glyphs should be black, > and if I add \color[red] before the text they should be red. Can and > if yes how this be setup? (Both in context and in generic) > no, at this moment is fixed, but we are discussing just now how to implement this. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
Am Thu, 22 Nov 2018 14:46:57 +0100 schrieb luigi scarso: >> >> A palette entry index value of 0x is a special case indicating >> that the text foreground color (defined by a higher-level client) >> should be used and shall not be treated as actual index into CPAL >> ColorRecord array. >> >> > " the text foreground color (defined by a higher-level client) > should be used" doesn't mean "you MUST take the current color > text" or even "you MUST use black" In fact "defined by a > higher-level client" means that I could define a palette such > that each glyph marked with 0x has its own color based on my > palette --- not necessarily the *same* color. Sounds as if there is some room for interpretation ;-). But assume that I want in my example the 0x to be interpretated as "the current text color", so the currently blue glyphs should be black, and if I add \color[red] before the text they should be red. Can and if yes how this be setup? (Both in context and in generic) -- Ulrike Fischer http://www.troubleshooting-tex.de/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On 11/22/2018 2:12 PM, Ulrike Fischer wrote: A palette entry index value of 0x is a special case indicating that the text foreground color (defined by a higher-level client) should be used and shall not be treated as actual index into CPAL ColorRecord array. unrelated ... 0x is intercepted and dealt with elsewhere ... default relates to what we like as default (which is an arbitrary choice from the palette but as said: that can be an option) Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On Thu, Nov 22, 2018 at 2:13 PM Ulrike Fischer wrote: > Am Thu, 22 Nov 2018 13:50:08 +0100 schrieb Hans Hagen: > > >> When I use this definitions I still get partly blue glyphs with this > >> preamble. Don't you get them? > > > well, i don't know what to expect > > Khaled mentioned this link which shows how (harfbuzz-based) browsers > like firefox interpret the font > https://www.amirifont.org/fatiha-colored.html > > Also the spec > https://docs.microsoft.com/en-us/typography/opentype/spec/colr#layer-record > says > > > A palette entry index value of 0x is a special case indicating > that the text foreground color (defined by a higher-level client) > should be used and shall not be treated as actual index into CPAL > ColorRecord array. > > > sure, in font-dsp.lua 2953 -- The special value 0x is foreground (but we index from 1). It 2954 -- more looks like indices into a palette so 'class' is a better name 2955 -- than 'palette'. " the text foreground color (defined by a higher-level client) should be used" doesn't mean "you MUST take the current color text" or even "you MUST use black" In fact "defined by a higher-level client" means that I could define a palette such that each glyph marked with 0x has its own color based on my palette --- not necessarily the *same* color. (this is the meaning in font-ocl.lua of 247 local default = colorvalues[#colorvalues] -- or 1 or ... maybe make it an option ) So..in this situation black makes sense as blue -- I guess that 0x is mapped as "cuirrent text color" in harfbuzz-browsers, so, sure, it has a bit more functionality. -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
Am Thu, 22 Nov 2018 13:50:08 +0100 schrieb Hans Hagen: >> When I use this definitions I still get partly blue glyphs with this >> preamble. Don't you get them? > well, i don't know what to expect Khaled mentioned this link which shows how (harfbuzz-based) browsers like firefox interpret the font https://www.amirifont.org/fatiha-colored.html Also the spec https://docs.microsoft.com/en-us/typography/opentype/spec/colr#layer-record says A palette entry index value of 0x is a special case indicating that the text foreground color (defined by a higher-level client) should be used and shall not be treated as actual index into CPAL ColorRecord array. -- Ulrike Fischer http://www.troubleshooting-tex.de/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On 11/21/2018 9:04 PM, Ulrike Fischer wrote: Am Wed, 21 Nov 2018 20:37:29 +0100 schrieb luigi scarso: \definefontfeature[quran][mode=node,language=dflt,script=arab, init=yes,medi=yes,fina=yes,isol=yes, ccmp=yes,locl=yes,calt=yes, liga=yes,clig=yes,dlig=yes,rlig=yes, mark=yes,mkmk=yes,kern=yes,curs=yes, colr=yes] \definefont[quran][AmiriQuranColored*quran @ 18pt] I have just copied-and- pasted an example around, but at least the "black-and-white" typography match. When I use this definitions I still get partly blue glyphs with this preamble. Don't you get them? well, i don't know what to expect ... anyway: \definefontfeature[quran][arabic][script=arab,colr=yes] helps to get better arabic, also use \righttoleft instead of the dir commands; the ^^ can be avoided with \Uchar"FDFD in font-ocl you can change this local default = false -- colorvalues[#colorvalues] -- or 1 or ... maybe make it an option so, no default (i used the default as in emoji it was better that way and those were the only fonts i had) .. when i have time i'll make it an option Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
Am Wed, 21 Nov 2018 20:37:29 +0100 schrieb luigi scarso: > \definefontfeature[quran][mode=node,language=dflt,script=arab, > init=yes,medi=yes,fina=yes,isol=yes, >ccmp=yes,locl=yes,calt=yes, >liga=yes,clig=yes,dlig=yes,rlig=yes, >mark=yes,mkmk=yes,kern=yes,curs=yes, > colr=yes] > \definefont[quran][AmiriQuranColored*quran @ 18pt] > > I have just copied-and- pasted an example around, but > at least the "black-and-white" typography match. When I use this definitions I still get partly blue glyphs with this preamble. Don't you get them? -- Ulrike Fischer https://www.troubleshooting-tex.de/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On Wed, Nov 21, 2018 at 7:04 PM Ulrike Fischer wrote:
> Am Wed, 21 Nov 2018 18:46:44 +0100 schrieb Hans Hagen:
>
> > I'm not sure what yoy mwan with 0x as that's intercepted
>
> With this example (font from
> https://github.com/alif-type/amiri/blob/master/AmiriQuranColored.ttf)
>
> a part of the glyphs are in blue. Khaled claims that this is wrong,
> that the blue should be black, and the output look like this
> https://i.stack.imgur.com/gpoO7.jpg
>
> (sorry about the ^^, it is a translation from a plain example):
>
> \starttext
> \definefontfeature[quran][script=arab,colr=yes]
> \definefont[quran][AmiriQuranColored*quran @ 20pt]
>
>
> \catcode`\^=7
> \pardir TRT\textdir TRT
> \quran
> \baselineskip=2.6em
> \parindent=0pt
> \leftskip=0pt plus 1fil
> \rightskip=0pt plus -1fil
> \parfillskip=0pt plus 2fil
> \def\aya#1{{\textdir TLT 06dd#1}}
> fdfd~\aya{١}\par
> ٱلۡحَمۡدُ لِلَّهِ رَبِّ ٱلۡعَٰلَمِینَ~\aya{٢} ٱلرَّحۡمَٰنِ
> ٱلرَّحِیمِ~\aya{٣} مَٰلِكِ یَوۡمِ ٱلدِّینِ~\aya{٤} إِیَّاكَ نَعۡبُدُ
> وَإِیَّاكَ نَسۡتَعِینُ~\aya{٥} ٱهۡدِنَا ٱلصِّرَٰطَ
> ٱلۡمُسۡتَقِیمَ~\aya{٦} صِرَٰطَ ٱلَّذِینَ أَنۡعَمۡتَ عَلَیۡهِمۡ
> غَیۡرِ ٱلۡمَغۡضُوبِ عَلَیۡهِمۡ وَلَا ٱلضَّاۤلِّینَ~\aya{٧}\par
> \stoptext
>
\definefontfeature[quran][mode=node,language=dflt,script=arab,
init=yes,medi=yes,fina=yes,isol=yes,
ccmp=yes,locl=yes,calt=yes,
liga=yes,clig=yes,dlig=yes,rlig=yes,
mark=yes,mkmk=yes,kern=yes,curs=yes,
colr=yes]
\definefont[quran][AmiriQuranColored*quran @ 18pt]
I have just copied-and- pasted an example around, but
at least the "black-and-white" typography match.
--
luigi
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
Am Wed, 21 Nov 2018 18:46:44 +0100 schrieb Hans Hagen:
> I'm not sure what yoy mwan with 0x as that's intercepted
With this example (font from
https://github.com/alif-type/amiri/blob/master/AmiriQuranColored.ttf)
a part of the glyphs are in blue. Khaled claims that this is wrong,
that the blue should be black, and the output look like this
https://i.stack.imgur.com/gpoO7.jpg
(sorry about the ^^, it is a translation from a plain example):
\starttext
\definefontfeature[quran][script=arab,colr=yes]
\definefont[quran][AmiriQuranColored*quran @ 20pt]
\catcode`\^=7
\pardir TRT\textdir TRT
\quran
\baselineskip=2.6em
\parindent=0pt
\leftskip=0pt plus 1fil
\rightskip=0pt plus -1fil
\parfillskip=0pt plus 2fil
\def\aya#1{{\textdir TLT 06dd#1}}
fdfd~\aya{١}\par
ٱلۡحَمۡدُ لِلَّهِ رَبِّ ٱلۡعَٰلَمِینَ~\aya{٢} ٱلرَّحۡمَٰنِ
ٱلرَّحِیمِ~\aya{٣} مَٰلِكِ یَوۡمِ ٱلدِّینِ~\aya{٤} إِیَّاكَ نَعۡبُدُ
وَإِیَّاكَ نَسۡتَعِینُ~\aya{٥} ٱهۡدِنَا ٱلصِّرَٰطَ
ٱلۡمُسۡتَقِیمَ~\aya{٦} صِرَٰطَ ٱلَّذِینَ أَنۡعَمۡتَ عَلَیۡهِمۡ
غَیۡرِ ٱلۡمَغۡضُوبِ عَلَیۡهِمۡ وَلَا ٱلضَّاۤلِّینَ~\aya{٧}\par
\stoptext
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
On 11/21/2018 1:37 PM, Ulrike Fischer wrote:
Am Wed, 21 Nov 2018 13:01:47 +0100 schrieb Ulrike Fischer:
Khaled wrote that "is that [the code] uses the last palette color
A bit too much deleted. It should say "it is a bug that ..."
in context use the context interface (which uses a different
implementation of the function you call)
\starttext
\definefontfeature[seguiemj-cl][default][colr=yes,ccmp=yes,dist=yes]
\definefontsynonym[emoji][seguiemj*seguiemj-cl]
\definecolor[emoji-red] [r=.4]
\definecolor[emoji-gray][s=1,t=.5,a=1]
\definefontcolorpalette [emoji-r] [emoji-red,emoji-gray]
\definefontfeature[seguiemj-r][ccmp=yes,dist=yes,colr=emoji-r]
\definefont[MyEmojiR][seguiemj*seguiemj-r @ 100pt]
\startTEXpage[offset=10pt]
\MyEmojiR\resolvedemoji{triangular ruler}
\stopTEXpage
\stoptext
I'm not sure what yoy mwan with 0x as that's intercepted .. the
choice for the last color as default is just that, a choice, could be
the first one or none (or configureable if needed)
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
Am Wed, 21 Nov 2018 13:01:47 +0100 schrieb Ulrike Fischer: > Khaled wrote that "is that [the code] uses the last palette color A bit too much deleted. It should say "it is a bug that ..." -- Ulrike Fischer http://www.troubleshooting-tex.de/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
[NTG-context] font-ocl.lua:76: attempt to call a nil value (field 'register')
I tried to register a demo colorpalette:
\starttext
\directlua{fonts.handlers.otf.registerpalette("demo", {
{ g=1 }, %accents
{ b=1 }, %06dd
{ r=0.5, g=0.5, b=0.5 }, %unused?
{ g = 0.5, b=0, r=1 },
}
)}
blub
\stoptext
and got the error
font-ocl.lua:76: attempt to call a nil value (field 'register')
(I wanted to test the coloring of
https://github.com/alif-type/amiri/blob/master/AmiriQuranColored.ttf,
Khaled wrote that "is that [the code] uses the last palette color
for layers using paletteIndex 0x (special value that means use
text color)." and that
local default = colorvalues[#colorvalues]
font-ocl.lua is faulty)
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
