Relative image path in renewed \maketitle

Question

To minimize the amount of copy-pasting I have to do between documents/projects, I've decided to create a separate file in which I renew the \maketitle command. This file (title.tex) should then be used as input for any project (in this case main.tex):

File main.tex:

\documentclass{article}
\input{/path/to/title}
\begin{document}
    \maketitle
\end{document}

File title.tex:

\usepackage[utf8]{inputenc}
\usepackage{geometry,graphicx}
\geometry{a4paper}
\renewcommand{\maketitle}{
    \includegraphics{image}
}

This doesn't work because the path provided for \includegraphics is relative. Making the path absolute would solve the problem, but that wouldn't make the file as portable as I would like.

Is there any way I can keep using a relative path for my image?

Answer 1

% Main.tex

\documentclass{article}
\usepackage{mytitle}
\begin{document}
    \MakeTitle{/path/to/image}
\end{document}

% mytitle.sty

\NeedsTeXFormat{LaTeX2e}[1994/06/01] 
\ProvidesPackage{mytitle}[2012/08/12 v0.01 LaTeX package to include title]  
\RequirePackage[utf8]{inputenc}
\RequirePackage[a4paper]{geometry}
\RequirePackage{graphicx}

\newcommand{\MakeTitle}[1]{\includegraphics{#1}}

\endinput 

Answer 2

The answer was actually fairly simple: Turn title.tex into title.sty and place it in the texmf folder (together with the image file):

%% This package provides a modified title
\NeedsTeXFormat{LaTeX2e}[1994/12/01]
\ProvidesPackage{title}[2012/08/13 v1 title]

\usepackage[utf8]{inputenc}
\usepackage{geometry,graphicx}
\geometry{a4paper}
\renewcommand{\maketitle}{
    \includegraphics{image}
}

\endinput
%%
%% End of file `title.sty'.

And in use the package in main.tex:

\documentclass{article}
\usepackage{title}
\begin{document}
    \maketitle
\end{document}

I have no idea if this is the proper way to do it, but it works well.

Answer 3

You can also simply create a command that write the path of the directory with things to be included (image.png and title.tex) and put inside \input:

%main.tex    
\documentclass{article}
    \newcommand{\onlypath}{/some/path/things}
    \input{\onlypath/title}
    \begin{document}
        \maketitle
    \end{document}

as well as in the \includegraphics command:

%title.tex
\usepackage[utf8]{inputenc}
\usepackage{geometry,graphicx}
\geometry{a4paper}
\renewcommand{\maketitle}{
    \includegraphics{\onlypath/image}
}