covers: support document with fontsize other than 12pt

--
Credit to Alexandre Honorat, taken from:
https://github.com/ahonorat/mathSTICtemplatePhD

Couverture-these/pagedegarde.tex

@@ -49,8 +49,8 @@
  %S’il n’y a pas de co-direction, faire disparaitre cet item de la couverture  
  %In there is no co-director, remove the item from the cover
 \jury{
-{\normalsize \textbf{Rapporteurs avant soutenance :}}\\ \newline
-\footnotesize
+{\normalTwelve \textbf{Rapporteurs avant soutenance :}}\\ \newline
+\footnotesizeTwelve
 \begin{tabular}{@{}ll}
 Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exercice \\
 Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exercice \\
@@ -58,9 +58,9 @@ Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exercice \\
 \end{tabular}
 
 \vspace{\baselineskip}
-{\normalsize \textbf{Composition du Jury :}}\\
+{\normalTwelve \textbf{Composition du Jury :}}\\
 {\fontsize{9.5}{11}\selectfont {\textcolor{red}{\textit{Attention, en cas d’absence d’un des membres du Jury le jour de la soutenance, la composition du jury doit être revue pour s’assurer qu’elle est conforme et devra être répercutée sur la couverture de thèse}}}}\\ \newline
-\footnotesize
+\footnotesizeTwelve
 \begin{tabular}{@{}lll}
 
 Pr\'{e}sident :        & Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exercice \textit{(à préciser après la soutenance)} \\
@@ -73,8 +73,8 @@ Co-dir. de th\`{e}se : & Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exerci
 \end{tabular}
 
 \vspace{\baselineskip}
-{\normalsize \textbf{Invit\'{e}(s) :}}\\ \newline
-\footnotesize
+{\normalTwelve \textbf{Invit\'{e}(s) :}}\\ \newline
+\footnotesizeTwelve
 \begin{tabular}{@{}ll}
 Pr\'{e}nom NOM & Fonction et \'{e}tablissement d'exercice \\
 \end{tabular}

these-ubl.cls

@@ -276,9 +276,14 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%%%%%%%% PAGE DE GARDE %%%%%%%%%%%%%%%%
 
-% Define some font sizes specific to the front cover
-\newcommand{\HugeFront}{\fontsize{26}{31}\selectfont} % Used in 'these de doctorat' title
-\newcommand{\LargeFront}{\fontsize{16}{19}\selectfont} % Used in thesis title
+% Define some font sizes specific to the covers, supposed to be in 12pt
+\newcommand{\HugeTwelve}{\fontsize{26}{31}\selectfont} % 12pt \Huge
+\newcommand{\LARGETwelve}{\fontsize{20.74}{25}\selectfont} % 12pt \LARGE
+\newcommand{\LargeTwelve}{\fontsize{16}{19}\selectfont} % 12pt \Large
+\newcommand{\largeTwelve}{\fontsize{14.4}{17}\selectfont} % 12pt \large
+\newcommand{\normalTwelve}{\fontsize{12}{13.2}\selectfont} % 12pt \normalsize
+\newcommand{\smallTwelve}{\fontsize{11}{13.5}\selectfont} % 12pt \small
+\newcommand{\footnotesizeTwelve}{\fontsize{9.5}{11}\selectfont} % 12pt \footnotesize
 
 % Affiche les logos sur les pages de couverture
 \newcommand{\displayLogos}{%
@@ -333,38 +338,35 @@
 
 \selectfontfrontcover % Set font style for front cover page
 
-{\HugeFront \textsc{Th\`{e}se de doctorat de}} \\
+{\HugeTwelve \textsc{Th\`{e}se de doctorat de} \\}
 
-%\begin{huge}
-%\ding{167}
-%\end{huge}
-
-  {\if\@nomecoleB\empty ~\\ \else \fi} % To compensate the 2 lines of MathSTIC
+% \vspace{5mm}
+{\normalTwelve \if\@nomecoleB\empty ~\\ \else \fi} % To compensate the 2 lines of MathSTIC
 {\setlength{\baselineskip}{0.9\baselineskip}
-{\if\vnometablissementA\empty ~\\ \else \large \vnometablissementA \\ \fi}
-{\if\vnometablissementB\empty ~\\ \else \large \vnometablissementB \\ \fi}
-{\if\vnometablissementC\empty ~\\ \else \large \vnometablissementC \\ \fi}
-{\if\vnometablissementD\empty ~\\ \else \large \vnometablissementD \\ \fi}
-{\large \vnometablissementE} \\
+{\largeTwelve \if\vnometablissementA\empty ~ \else \vnometablissementA \fi} \\
+{\largeTwelve \if\vnometablissementB\empty ~ \else \vnometablissementB \fi} \\
+{\largeTwelve \if\vnometablissementC\empty ~ \else \vnometablissementC \fi} \\
+{\largeTwelve \if\vnometablissementD\empty ~ \else \vnometablissementD \fi} \\
+{\largeTwelve \vnometablissementE} \\
 \par}
 \vspace{0.01cm}
 {\setlength{\baselineskip}{0.7\baselineskip}
-{\small\textsc{\'{E}cole Doctorale \No \@numeroecole}} \\
-{\textit{\@nomecoleA}} \\
-{\if\@nomecoleB\empty \else \textit{\@nomecoleB} \\ \fi}
-{Sp\'{e}cialit\'{e} : \textit{\@spec}}
+{\smallTwelve \textsc{\'{E}cole Doctorale \No \@numeroecole}} \\
+{\normalTwelve \textit{\@nomecoleA}} \\
+{\normalTwelve \if\@nomecoleB\empty \else \textit{\@nomecoleB} \\ \fi}
+{\normalTwelve Sp\'{e}cialit\'{e} : \textit{\@spec}}
 
-\fontsize{12}{10}\selectfont
+%\fontsize{12}{10}\selectfont
 \vspace{0.5cm}
-\hspace{0.6cm}Par \vspace{0.15cm}
+\hspace{0.6cm}{\normalTwelve Par \vspace{0.15cm}}
 \par}
-\hspace{0.6cm}{\LARGE\textbf{\@author}} \vspace{0.5cm}
+\hspace{0.6cm}{\LARGETwelve \textbf{\@author}} \vspace{0.5cm}
 
-{\LargeFront\textbf{\@title}} \vspace{0.5cm}
+{\LargeTwelve \textbf{\@title}} \vspace{0.5cm}
 	
-{\large{\@lesoustitre}} \vspace{0.5cm}
+{\largeTwelve \@lesoustitre} \vspace{0.5cm}
 \begin{spacing}{1}
-	 \small
+	 \smallTwelve
 	 \textbf{Th\`{e}se pr\'{e}sent\'{e}e et soutenue \`{a} \@lieu, le \@date} \\
 	 \textbf{Unit\'{e} de recherche : \@uniterecherche} \\
 	 \textbf{\if\@numthese\empty \else Th\`{e}se \No : \@numthese \fi} % Hide line if no number provided
@@ -410,22 +412,20 @@
 {\centering \noindent \textcolor{color-ecole}{\rule{\textwidth}{0.2cm}}}
 \vspace{-1cm}
 \selectlanguage{french}
-\section*{\selectfontbackcover\small\textcolor{color-ecole}{Titre : }{\selectfontbackcover\mdseries{#1}}} % In this particular case, font style needs to get re-selected locally
+\section*{\selectfontbackcover\smallTwelve \textcolor{color-ecole}{Titre : }{\selectfontbackcover\mdseries{#1}}} % In this particular case, font style needs to get re-selected locally
 }
 
 \newcommand{\keywordsFR}[1]{%
 \vspace{-0.2cm}
-\noindent{\small\textbf{Mot cl\'{e}s : }#1}
+\noindent{\smallTwelve \textbf{Mot cl\'{e}s : }#1}
 }
 
 \newcommand{\abstractFR}[1]{%
 \vspace{-0.2cm}
 \begin{multicols}{2}
-\begin{small}
 \begin{spacing}{1}
-	\noindent \textbf{R\'{e}sum\'{e} : }#1
+	\noindent\smallTwelve \textbf{R\'{e}sum\'{e} : }#1
 \end{spacing}
-\end{small}
 \end{multicols}
 }
 
@@ -434,22 +434,20 @@
 {\centering \noindent \textcolor{color-ecole}{\rule{\textwidth}{0.2cm}}}
 \vspace{-1cm}
 \selectlanguage{english}
-\section*{\selectfontbackcover\small\textcolor{color-ecole}{Title: }{\selectfontbackcover\mdseries{#1}}} % In this particular case, font style needs to get re-selected locally
+\section*{\selectfontbackcover\smallTwelve \textcolor{color-ecole}{Title: }{\selectfontbackcover\mdseries{#1}}} % In this particular case, font style needs to get re-selected locally
 }
 
 \newcommand{\keywordsEN}[1]{%
 \vspace{-0.2cm}
-\noindent{\small\textbf{Keywords: }#1}
+\noindent{\smallTwelve \textbf{Keywords: }#1}
 }
 
 \newcommand{\abstractEN}[1]{%
 \vspace{-0.2cm}
 \begin{multicols}{2}
-\begin{small}
 \begin{spacing}{1}
-	\noindent \textbf{Abstract: }#1
+	\noindent\smallTwelve \textbf{Abstract: }#1
 \end{spacing}
-\end{small}
 \end{multicols}
 }