Conditionally include a line based on an option with pgfpackages

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

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

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
3 hours 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
3 hours 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
3 hours 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
3 hours 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

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

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
3 hours 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
3 hours 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
3 hours 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
3 hours 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

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

1,79021937

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

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

1,79021937

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

1,79021937

edited 3 hours ago

Bernard

173k776205

edited 3 hours ago

Bernard

173k776205

edited 3 hours ago

Bernard

173k776205

asked 4 hours ago

Vincent

1,79021937

asked 4 hours ago

Vincent

1,79021937

asked 4 hours ago

Vincent

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
3 hours 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
3 hours 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
3 hours 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
3 hours ago

add a comment |

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

– marmot
3 hours 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
3 hours 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
3 hours 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
3 hours ago

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

– marmot
3 hours 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
3 hours 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
3 hours 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
3 hours ago

add a comment |

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