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0

I am trying to design a small package, mostly for test purpose. Currently the package looks like this:

% eqbox.sty

NeedsTeXFormat{LaTeX2e}[1994/06/01]

ProvidesPackage{eqbox}[2019/01/01 Boxed Equations]



RequirePackage{xcolor}

RequirePackage{pgfopts}

RequirePackage{amsmath}

RequirePackage{fancybox}

RequirePackage[most]{tcolorbox}



pgfkeys{

    /eqbox/.cd,

    colframe/.store in = colframe,

    colframe = black,

    colback/.store in = colback,

    colback = white,

    shadow/.store in = shadow,

    shadow = undefined,

}

ProcessPgfPackageOptions{/eqbox}



tcbset{

    highlight math style={

        enhanced,

        sharp corners,

        breakable,

        colframe=colframe,

        colback=colback,

ifxundefinedshadow

else

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

        boxrule=0.4pt,

        boxsep = 3pt,

        left = 0pt,

        right = 0pt,

        top = 0pt,

        bottom = 0pt

    }

}

and I can try to use it this way:

documentclass[letterpaper, 11pt, onecolumn]{article}



usepackage{lipsum}

usepackage{eqbox}



begin{document}

lipsum[1]

begin{equation}

tcbhighmath{x^2 + 3}

end{equation}

lipsum[1]

end{document}

However it does not work. My intent is that:

• By default, usepackage{eqbox} does not provide any shadow


• If the user writes usepackage[shadow=blue]{eqbox} then equations are put in boxes with a blue shadow

How to make that work? (I think I do not know how to use ifx to make that work)

EDIT: I also tried:

ifdefinedshadow

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

but it does not work either

tikz-pgf tcolorbox package-writing ifthenelse

share|improve this question

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  One quick remark: you have shadow = undefined, but a backslash in ifxundefinedshadow. (I am not saying that adding the backslash will fix it.)
  
  – marmot
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can add ifxshadowemptyelsetcbset{shadow={2pt}{-2pt}{0mm}{shadow}}fi outside of tcbset. And then simply set shadow= (to set the shadow to empty) or shadow=red to set it to red. But I do not understand why you need the shadow macro to do all this. You can simply set /eqbox/shadow/.style = {shadow={2pt}{-2pt}{0mm}{#1}}.
  
  – Kpym
  33 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Kpym: would there be any trick to put the ifx/else inside the tcbset. In this specific case your trick works, but I'm sure I will encounter cases where I would like to have if/else conditions inside some command.
  
  – Vincent
  27 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I can't see why you need to put conditionals directly inside pgfset, tcbset, tikzset. The conditionals should be in the .code part of the keys in general or outside this "key" environments.
  
  – Kpym
  20 mins ago
  

  
  
  
  

add a comment | 

0

I am trying to design a small package, mostly for test purpose. Currently the package looks like this:

% eqbox.sty

NeedsTeXFormat{LaTeX2e}[1994/06/01]

ProvidesPackage{eqbox}[2019/01/01 Boxed Equations]



RequirePackage{xcolor}

RequirePackage{pgfopts}

RequirePackage{amsmath}

RequirePackage{fancybox}

RequirePackage[most]{tcolorbox}



pgfkeys{

    /eqbox/.cd,

    colframe/.store in = colframe,

    colframe = black,

    colback/.store in = colback,

    colback = white,

    shadow/.store in = shadow,

    shadow = undefined,

}

ProcessPgfPackageOptions{/eqbox}



tcbset{

    highlight math style={

        enhanced,

        sharp corners,

        breakable,

        colframe=colframe,

        colback=colback,

ifxundefinedshadow

else

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

        boxrule=0.4pt,

        boxsep = 3pt,

        left = 0pt,

        right = 0pt,

        top = 0pt,

        bottom = 0pt

    }

}

and I can try to use it this way:

documentclass[letterpaper, 11pt, onecolumn]{article}



usepackage{lipsum}

usepackage{eqbox}



begin{document}

lipsum[1]

begin{equation}

tcbhighmath{x^2 + 3}

end{equation}

lipsum[1]

end{document}

However it does not work. My intent is that:

• By default, usepackage{eqbox} does not provide any shadow


• If the user writes usepackage[shadow=blue]{eqbox} then equations are put in boxes with a blue shadow

How to make that work? (I think I do not know how to use ifx to make that work)

EDIT: I also tried:

ifdefinedshadow

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

but it does not work either

tikz-pgf tcolorbox package-writing ifthenelse

share|improve this question

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  One quick remark: you have shadow = undefined, but a backslash in ifxundefinedshadow. (I am not saying that adding the backslash will fix it.)
  
  – marmot
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can add ifxshadowemptyelsetcbset{shadow={2pt}{-2pt}{0mm}{shadow}}fi outside of tcbset. And then simply set shadow= (to set the shadow to empty) or shadow=red to set it to red. But I do not understand why you need the shadow macro to do all this. You can simply set /eqbox/shadow/.style = {shadow={2pt}{-2pt}{0mm}{#1}}.
  
  – Kpym
  33 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Kpym: would there be any trick to put the ifx/else inside the tcbset. In this specific case your trick works, but I'm sure I will encounter cases where I would like to have if/else conditions inside some command.
  
  – Vincent
  27 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I can't see why you need to put conditionals directly inside pgfset, tcbset, tikzset. The conditionals should be in the .code part of the keys in general or outside this "key" environments.
  
  – Kpym
  20 mins ago
  

  
  
  
  

add a comment | 

I am trying to design a small package, mostly for test purpose. Currently the package looks like this:

% eqbox.sty

NeedsTeXFormat{LaTeX2e}[1994/06/01]

ProvidesPackage{eqbox}[2019/01/01 Boxed Equations]



RequirePackage{xcolor}

RequirePackage{pgfopts}

RequirePackage{amsmath}

RequirePackage{fancybox}

RequirePackage[most]{tcolorbox}



pgfkeys{

    /eqbox/.cd,

    colframe/.store in = colframe,

    colframe = black,

    colback/.store in = colback,

    colback = white,

    shadow/.store in = shadow,

    shadow = undefined,

}

ProcessPgfPackageOptions{/eqbox}



tcbset{

    highlight math style={

        enhanced,

        sharp corners,

        breakable,

        colframe=colframe,

        colback=colback,

ifxundefinedshadow

else

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

        boxrule=0.4pt,

        boxsep = 3pt,

        left = 0pt,

        right = 0pt,

        top = 0pt,

        bottom = 0pt

    }

}

and I can try to use it this way:

documentclass[letterpaper, 11pt, onecolumn]{article}



usepackage{lipsum}

usepackage{eqbox}



begin{document}

lipsum[1]

begin{equation}

tcbhighmath{x^2 + 3}

end{equation}

lipsum[1]

end{document}

However it does not work. My intent is that:

• By default, usepackage{eqbox} does not provide any shadow


• If the user writes usepackage[shadow=blue]{eqbox} then equations are put in boxes with a blue shadow

How to make that work? (I think I do not know how to use ifx to make that work)

EDIT: I also tried:

ifdefinedshadow

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

but it does not work either

tikz-pgf tcolorbox package-writing ifthenelse

share|improve this question

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

% eqbox.sty

NeedsTeXFormat{LaTeX2e}[1994/06/01]

ProvidesPackage{eqbox}[2019/01/01 Boxed Equations]



RequirePackage{xcolor}

RequirePackage{pgfopts}

RequirePackage{amsmath}

RequirePackage{fancybox}

RequirePackage[most]{tcolorbox}



pgfkeys{

    /eqbox/.cd,

    colframe/.store in = colframe,

    colframe = black,

    colback/.store in = colback,

    colback = white,

    shadow/.store in = shadow,

    shadow = undefined,

}

ProcessPgfPackageOptions{/eqbox}



tcbset{

    highlight math style={

        enhanced,

        sharp corners,

        breakable,

        colframe=colframe,

        colback=colback,

ifxundefinedshadow

else

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

        boxrule=0.4pt,

        boxsep = 3pt,

        left = 0pt,

        right = 0pt,

        top = 0pt,

        bottom = 0pt

    }

}

documentclass[letterpaper, 11pt, onecolumn]{article}



usepackage{lipsum}

usepackage{eqbox}



begin{document}

lipsum[1]

begin{equation}

tcbhighmath{x^2 + 3}

end{equation}

lipsum[1]

end{document}

ifdefinedshadow

        shadow={2pt}{-2pt}{0mm}{shadow},

fi

share|improve this question

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

share|improve this question

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

edited 2 mins ago

Bernard

173k776205

edited 2 mins ago

Bernard

173k776205

asked 1 hour ago

VincentVincent

1,79021937

asked 1 hour ago

VincentVincent

1,79021937