Impossible to change the color of the material passed in shipout/background #4

dbitouze · 2021-04-28T16:09:54Z

The luacolor package makes impossible to change the colour of the material passed in "shipout/background", as shown in the following example, which typesets "DRAFT":

in red if luacolor is not called ;
in black otherwise.

\documentclass{article}
\usepackage{xcolor}
% \usepackage{luacolor}
\usepackage{lipsum}
\AddToHook{shipout/background}
{%
  \put(0.5\paperwidth,-0.5\paperheight)
  {%
    \makebox[0pt][c]{\Huge\color{red}DRAFT}
  }%
}
\begin{document}
\lipsum[1-5]
\end{document}

The text was updated successfully, but these errors were encountered:

u-fischer · 2021-04-28T16:16:55Z

It will work in the next LaTeX version (it already works with lualatex-dev).

dbitouze · 2021-05-26T13:34:04Z

It will work in the next LaTeX version (it already works with lualatex-dev).

With lualatex-dev (LuaHBTeX, Version 1.13.2), works nicely with \color{...} but not with \color_fill:n {...}:

\documentclass{article}
\usepackage{luacolor}
\usepackage[paperheight=2cm,paperwidth=3cm]{geometry}
\ExplSyntaxOn
\AddToHook{shipout/background}
{%
  \put(0.5\paperwidth,-0.5\paperheight)
  {%
    \makebox[0pt][c]{
      \color_fill:n {red}
      RED?
      \color{red}
      RED!
    }
  }%
}
\ExplSyntaxOff
\begin{document}
\mbox{}
\end{document}

u-fischer · 2021-05-26T13:43:48Z

luacolor doesn't work with l3color at all currently. That is a unrelated issue.

dbitouze · 2021-05-26T14:04:15Z

luacolor doesn't work with l3color at all currently. That is a unrelated issue.

OK. I guess it is useless to open a feature request for this 😄

u-fischer · 2021-05-26T14:37:11Z

@dbitouze well you can play around with this here. That is only temporary, we will have to discuss how to integrate this properly.
(I didn't tested properly if the fill and stroke code actually works correctly)

\documentclass{article}
\usepackage{luacolor}
\ExplSyntaxOn \makeatletter
\cs_set_protected:Npn \__color_backend_select:nn #1#2
  { 
    \LuaCol@setattribute\LuaCol@Attribute
     {
       \directlua{oberdiek.luacolor.get("\luaescapestring{#1~#2}")}
     }
  }
\cs_set_protected:Npn \__color_backend_fill:n #1
  {    
    \LuaCol@setattribute\LuaCol@Attribute
     {
       \directlua{oberdiek.luacolor.get("\luaescapestring{#1}")}
     }
  }
\cs_set_protected:Npn \__color_backend_stroke:n #1
  {    
    \LuaCol@setattribute\LuaCol@Attribute
     {
       \directlua{oberdiek.luacolor.get("\luaescapestring{#1}")}
     }
  }  
\cs_set_protected:Npn \__color_backend_reset:{ }
  
\ExplSyntaxOff  \makeatother
\begin{document}

\ExplSyntaxOn
   \makebox[0pt][c]{
   \color_select:n {blue} Blue 
   \color_fill:n {red} Red?
      \color{red}
      RED!
    }
\ExplSyntaxOff
\mbox{}
\end{document}

dbitouze · 2021-05-26T14:47:40Z

well you can play around with this here.

Thanks! But, unfortunately:

! LaTeX3 Error: Control sequence \__color_backend_select:nn already defined

u-fischer · 2021-05-26T14:54:36Z

Ah, sorry. Load expl3 and the backend first. E.g. with \usepackage{expl3}. My documents actually all start with this

\RequirePackage{expl3}
\ExplSyntaxOn
\pdf_uncompress:
\ExplSyntaxOff

\documentclass{article}

dbitouze · 2021-05-26T14:59:21Z

E.g. with \usepackage{expl3}

Works nicely now. Is there any reason for \ExplSyntaxOn \makeatletter...\ExplSyntaxOff \makeatother to not be properly nested?

dbitouze · 2021-06-09T07:50:10Z

luacolor doesn't work with l3color at all currently. That is a unrelated issue.

Interestingly, as far as l3color's \color_fill:n is concerned, the following MCE compiled with lualatex:

works as expected with:

 *File List*
 article.cls    2020/04/10 v1.4m Standard LaTeX document class
  size10.clo    2020/04/10 v1.4m Standard LaTeX file (size option)
luacolor.sty    2021-02-17 v1.17 Color support via LuaTeX's attributes (HO)
   color.sty    2020/02/24 v1.2b Standard LaTeX Color (DPC)
   color.cfg    2016/01/02 v1.6 sample color configuration
  luatex.def    2020/10/05 v1.2a Graphics/color driver for luatex
atbegshi-ltx.sty    2020/08/17 v1.0a Emulation of the original atbegshi package
  with kernel methods
l3backend-luatex.def    2021-05-07 L3 backend support: PDF output (LuaTeX)
  ts1cmr.fd    2019/12/16 v2.5j Standard LaTeX font definitions
supp-pdf.mkii
 ***********

doesn't work as expected with:

 *File List*
 article.cls    2021/02/12 v1.4n Standard LaTeX document class
  size10.clo    2021/02/12 v1.4n Standard LaTeX file (size option)
luacolor.sty    2021-02-17 v1.17 Color support via LuaTeX's attributes (HO)
   color.sty    2020/02/24 v1.2b Standard LaTeX Color (DPC)
   color.cfg    2016/01/02 v1.6 sample color configuration
  luatex.def    2021/06/01 v1.2c Graphics/color driver for luatex
l3backend-luatex.def    2021-05-07 L3 backend support: PDF output (LuaTeX)
  ts1cmr.fd    2019/12/16 v2.5j Standard LaTeX font definitions
supp-pdf.mkii
 ***********

\documentclass{article}
\usepackage{luacolor}
\paperheight=2cm
\paperwidth=3cm
\ExplSyntaxOn
\AddToHook{shipout/background}
{%
  \put(0.5\paperwidth,-0.5\paperheight)
  {%
    \makebox[0pt][c]{
      \color_fill:n {red}
      RED?
      \color{red}
      RED!
    }
  }%
}
\ExplSyntaxOff
\begin{document}
\mbox{}
\end{document}

u-fischer · 2021-06-09T07:54:38Z

| Interestingly, as far as l3color's \color_fill:n is concerned, the following MCE compiled with lualatex:

untested but quite possible. Don't forget that in older LaTeX luacolor didn't work in shipout/background at all and so can't interfere with/overwrite "normal color settings".

josephwright · 2021-06-09T09:05:24Z

We have some work in a branch that will add Lua-based color to the core l3color approach, then 'all' I have to do is link it to luacolor!

u-fischer · 2021-07-21T13:33:29Z

this issue is resolved. The l3color question should go elsewhere.

dbitouze · 2022-02-28T15:00:08Z

this issue is resolved. The l3color question should go elsewhere.

Done here.

huftis mentioned this issue May 18, 2021

Watermark text turns black when luacolor package is used (in TeX Live 2021) callegar/LaTeX-draftwatermark#27

Closed

u-fischer closed this as completed Jul 21, 2021

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Impossible to change the color of the material passed in shipout/background #4

Impossible to change the color of the material passed in shipout/background #4

dbitouze commented Apr 28, 2021 •

edited

u-fischer commented Apr 28, 2021

dbitouze commented May 26, 2021 •

edited

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

dbitouze commented Jun 9, 2021

u-fischer commented Jun 9, 2021

josephwright commented Jun 9, 2021

u-fischer commented Jul 21, 2021

dbitouze commented Feb 28, 2022

Impossible to change the color of the material passed in shipout/background #4

Impossible to change the color of the material passed in shipout/background #4

Comments

dbitouze commented Apr 28, 2021 • edited

u-fischer commented Apr 28, 2021

dbitouze commented May 26, 2021 • edited

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

u-fischer commented May 26, 2021

dbitouze commented May 26, 2021

dbitouze commented Jun 9, 2021

u-fischer commented Jun 9, 2021

josephwright commented Jun 9, 2021

u-fischer commented Jul 21, 2021

dbitouze commented Feb 28, 2022

dbitouze commented Apr 28, 2021 •

edited

dbitouze commented May 26, 2021 •

edited