Htydjtk

I am making my resume using the moderncv package with the classic style.

I wish to replace the photo with a QR-code to my personal website, using the qrcode package.

I tried replacing the argument of the photo command with the corresponding qrcode{...} command, but this fails with a LaTeX error message.

Here is a MWE that illustrates the idea I am trying

documentclass[11pt,a4paper,sans]{moderncv}

moderncvstyle{classic}

usepackage{graphicx}

usepackage{qrcode}



firstname{John}

familyname{Doe}



address{83 Fancy Avenue}{Noweheresville}{Gotham City 24061} 

phone[mobile]{123 456 7890}

email{someone@xyz.com}



% photo[64pt][0.5pt]{example-image-a}  % works fine

photo[64pt][0.5pt]{qrcode[hyperlink,height=64pt]{http://www.ctan.org}} % produces an error



begin{document}

   makecvtitle

end{document}

How can I achieve the desired goal?

Update

I now understand that photo is essentialy a wrapper for includegraphics, and therefore expects a file path as its argument.

• Is it possible to re-define photo to be flexible enough to accept either a latex command or a graphics file path?




• Failing that, at least is it possible to automate the inclusion of a QR-code image that automatically updates whenever the URL argument to the qrcode command is updated i.e. avoid compilation of multiple documents?

photo command wants a file suitable to be included with an includegraphics command. Therefore, I think the easiest solution would be to create your own qrcode within an standalone document and use the result as photo in moderncv.

%File qrcode.tex -> qrcode.pdf

documentclass{standalone}

usepackage{qrcode}

begin{document}

qrcode[hyperlink,height=64pt]{http://www.ctan.org}

end{document}

documentclass[11pt,a4paper,sans]{moderncv}

moderncvstyle{classic}

usepackage{qrcode}

usepackage{graphicx}



firstname{John}

familyname{Doe}



address{83 Fancy Avenue}{Noweheresville}{Gotham City 24061} 

phone[mobile]{123 456 7890}

email{someone@xyz.com}



photo[64pt][0.5pt]{qrcode}



begin{document}

   makecvtitle

end{document}

Update: All in one ;-)

With filecontents package and an immediate command it's possible to join both files into one and compile both together:

documentclass[11pt,a4paper,sans]{moderncv}

moderncvstyle{classic}

usepackage{qrcode}

usepackage{filecontents}



begin{filecontents*}{myqrcode.tex} %<- This is the qrcode file name

documentclass{standalone}

usepackage{qrcode}

begin{document}

qrcode[hyperlink,height=64pt]{http://www.ctan.org}

end{document}

end{filecontents*}



immediatewrite18{pdflatex myqrcode.tex}



firstname{John}

familyname{Doe}



address{83 Fancy Avenue}{Noweheresville}{Gotham City 24061} 

phone[mobile]{123 456 7890}

email{someone@xyz.com}



photo[64pt][0.5pt]{myqrcode} %<- Insert previous name



begin{document}

   makecvtitle

end{document}

In the code of class moderncv, style classic you can find an if-then-else construct checking if a photo is defined (printing it) or not (doing nothing). I added inside the empty case a new if-then-else testing, if a new command qrphoto is defined. If it is defined the code prints it, in the other case it does nothing.

The new command for the qrphoto is:

NewDocumentCommand{qrphoto}{O{64pt}O{0.4pt}m}{def@qrphotowidth{#1}def@qrphotoframewidth{#2}def@qrphoto{#3}}

With this command I define the needed values @qrphotowidth etc. for later usage.

Now we can patch the original command with

patchcmd{makecvhead}%

  {%

    ifthenelse{isundefined{@photo}}{}%

  }% code to patch

  {% new code <=========================================================

    ifthenelse{isundefined{@photo}}%

      {%

        ifthenelse{isundefined{@qrphoto}}%

        {}%

        {%

          if@left%

            hspace*{separatorcolumnwidth}fi%

          color{color1}%

          setlength{fboxrule}{@qrphotoframewidth}%

          ifdim@qrphotoframewidth=0pt%

            setlength{fboxsep}{0pt}fi%

          raisebox{1cm}{framebox{qrcode[hyperlink,height=@qrphotowidth]{@qrphoto}}} 

        }

      }%

  }% end new code <=====================================================

  {}% success

  {fail}% failure

The command raisebox[1cm] is needed to get the qr-code on the right position (I did not search for the reason, why I need it here. The used value is okay for sizes of the resulting qr-code of 2cm (I used for the example code) or more. If your qr-code should be smaller you need to change my used value of 1cm to a lower value. You will have to try it out.

As you can see I deleted the command includegraphics. With command qrphoto qrcode... from package qrcode.

With the command

qrphoto[2cm][0.5pt]{https://tex.stackexchange.com/questions/474546/}

for example you can add an qr-code-image with a hight and width of 2cm, a frame around it with a line of 0.5pt and the content of the qr-code-image is https://tex.stackexchange.com/questions/474546/ (this question).

So with the following complete MWE

documentclass[11pt,a4paper,sans]{moderncv}



moderncvstyle{classic}



usepackage{graphicx}

usepackage{qrcode}



firstname{John}

familyname{Doe}



address{83 Fancy Avenue}{Noweheresville}{Gotham City 24061} 

phone[mobile]{123 456 7890}

email{someone@xyz.com}



makeatletter

NewDocumentCommand{qrphoto}{O{64pt}O{0.4pt}m}{def@qrphotowidth{#1}def@qrphotoframewidth{#2}def@qrphoto{#3}}

% to patch the code of moderncv, version 2.0.0

%usepackage{etoolbox} % already loaded in moderncv <===================

patchcmd{makecvhead}%

  {%

    ifthenelse{isundefined{@photo}}{}%

  }% code to patch

  {% new code <=========================================================

    ifthenelse{isundefined{@photo}}%

      {%

        ifthenelse{isundefined{@qrphoto}}%

        {}%

        {%

          if@left%

            hspace*{separatorcolumnwidth}fi%

          color{color1}%

          setlength{fboxrule}{@qrphotoframewidth}%

          ifdim@qrphotoframewidth=0pt%

            setlength{fboxsep}{0pt}fi%

          raisebox{1cm}{framebox{qrcode[hyperlink,height=@qrphotowidth]{@qrphoto}}} 

        }

      }%

  }% end new code <=====================================================

  {}% success

  {fail}% failure

makeatother



%photo[64pt][0.5pt]{example-image}

qrphoto[2cm][0.5pt]{https://tex.stackexchange.com/questions/474546/} % 





begin{document}

  makecvtitle

end{document}

you get the following result:

Please note that you can only print a photo or a qr-code. If you have a defined photo and qrphoto only the photo is printed!