The line 183 of the code of the class is:
\def\tlc@logoFile{\tlc@location/logo.png}%So the PNG format is mandated.
But PNG is a very bad format for logos. Especially in documents produced with LaTeX.
The PDF format would be better.
On line 418, we read:
\fancyhead[L]{\includegraphics[width=3cm,height=1cm]{\tlc@logoFile}}%In fact, \includegraphics don't need the extension of the file.
So, with \def\tlc@logoFile{\tlc@location/logo}% in line 183,
and with this modified code:
\newcommand{\useLogoFile}{%
% \IfFileExists{\tlc@logoFile.png}%
% {%
% \fancyhead[L]{\includegraphics[width=3cm,height=1cm]{\tlc@logoFile}}%
% }%
% {%
% % Else: no operation because tlc@logoFile does not exist.
% }%
\newif\iffileexists
\fileexistsfalse
\@for\@tempext:=\Gin@extensions\do{%
\IfFileExists{\tlc@logoFile\@tempext}{\fileexiststrue}{}%
}%
\iffileexists
\fancyhead[L]{\includegraphics[width=3cm,height=1cm]{\tlc@logoFile}}%
\else
% no operation because tlc@logoFile does not exist.
\fi
}%(Code from an IA, I was not aware of the list of extensions known by the graphicx package (\Gin@extensions).)
the logo is displayed if the user put logo.jpeg, or logo.png or logo.pdf in /data/ folder.
But the code deforms the shape of the logo, because it mandates an aspect ratio of 3:1 ([width=3cm,height=1cm]). This is not documented in the manual.
Strangely, the file logo.png is a 145 × 52 pixels image, which is not a 3:1 ratio (it's a 2.79:1 ratio).
Anyway, it would be better in a PDF format, as I have shown that you can use other formats than the PNG.
A side note: please stop using the very old listings package. Minted is far better.
If I copy code typeset with listings, this very old package adds spaces between letters (because it use non monospaced fonts, and simulate monospaced with variable width space):
Only the strange old author of the listings package choose to display code with a serif font. Probably because 30 years ago, there was not a monospaced font with bold variant. So the author of listings has decided to use a serif font and tried to fake a typewriter font by adding variable space between letters. With the bad result in copy of PDF as showed above.
The line 183 of the code of the class is:
So the PNG format is mandated.
But PNG is a very bad format for logos. Especially in documents produced with LaTeX.
The PDF format would be better.
On line 418, we read:
In fact,
\includegraphicsdon't need the extension of the file.So, with
\def\tlc@logoFile{\tlc@location/logo}%in line 183,and with this modified code:
(Code from an IA, I was not aware of the list of extensions known by the graphicx package (\Gin@extensions).)
the logo is displayed if the user put logo.jpeg, or logo.png or logo.pdf in /data/ folder.
But the code deforms the shape of the logo, because it mandates an aspect ratio of 3:1 ([width=3cm,height=1cm]). This is not documented in the manual.
Strangely, the file logo.png is a 145 × 52 pixels image, which is not a 3:1 ratio (it's a 2.79:1 ratio).
Anyway, it would be better in a PDF format, as I have shown that you can use other formats than the PNG.
A side note: please stop using the very old listings package. Minted is far better.
If I copy code typeset with listings, this very old package adds spaces between letters (because it use non monospaced fonts, and simulate monospaced with variable width space):
Only the strange old author of the listings package choose to display code with a serif font. Probably because 30 years ago, there was not a monospaced font with bold variant. So the author of listings has decided to use a serif font and tried to fake a typewriter font by adding variable space between letters. With the bad result in copy of PDF as showed above.