% !TeX TS-encoding = utf8
% !TeX TS-spellcheck = fr_FR
% !TeX TS-program = lualatex

documentclass[markcolor=black,coverwidth=210mm,coverheight=297mm,spinewidth=64.53082pt, bleedwidth=2.5mm]{bookcover}

usepackage{fontspec}
defaultfontfeatures{Ligatures=TeX}%,Numbers=OldStyle}% ,Scale=MatchLowercase} bug in current Biolinum
setmainfont{Linux Libertine O}
setsansfont{Linux Biolinum O}

usepackage{polyglossia}
setmainlanguage{french}

usepackage{xparse}
usepackage{microtype}
usepackage{impnattypo}
usepackage{graphicx}
usepackage{xcolor}
usepackage{pgfplots}
usetikzlibrary{calc, positioning,}
makeatletter
NewDocumentCommandpgfextractlength{mO{1}mO{center}mO{center}}{%
pgfpointdiff{pgfpointanchor{#3}{#4}}
{pgfpointanchor{#5}{#6}}
pgf@xa=pgf@x % no need to use a new dimen
pgf@ya=pgf@y
pgfmathparse{#2*veclen(pgf@xa,pgf@ya)/28.45274} % to convert from pt to cm
globallet#1pgfmathresult % we need a global macro
}
makeatother

defannee{}
newcommand{Annee}[1]{defannee{#1}}

definecolor{bleu045}{rgb}{0, .17, .45}
definecolor{estia}{RGB}{0,158,225}

Annee{2017}
defgram{80}
defmain{1.8}
defplat{0}

begin{document}
pgfmathsetmacro{longueur}{coverwidth+bleedwidth}
pgfmathsetmacro{Ltitre}{.6*coverwidth}
pgfmathsetmacro{Htitre}{.4*spinewidth}
begin{bookcover}
bookcovercomponent{center}{above front}{
color{red}Paramètres: largeur=thecoverwidth, hauteur=thecoverheight, fond perdu=thebleedwidth, dos=thespinewidth, grammage=gram, main=main, plat carton=plat pt}

bookcovercomponent{tikz}{spine}{
    node at (part.center) [rotate=90, anchor=center] {resizebox{Ltitre pt}{!}{bfseriesscshape Publications scientifiques — annee}};
%   node at (part.center) [rotate=90, anchor=center] {resizebox{!}{Htitre pt}{bfseriesscshape Publications scientifiques — annee}};
    node at ($(part.south)+(0,bleedwidth)$) [rotate=90, anchor=west] {Logo};
}

bookcovercomponent{tikz}{bg front}{
    node (batiment) at (part.north) [inner sep=0pt, outer sep=0pt, anchor=north] {image};
    node (lisere) [below=0pt of batiment, inner sep=0pt, outer sep=0pt, minimum width=longueur pt, minimum height=1cm, fill=estia, fill opacity=.4]{};
    coordinate (ctitre) at (part.center);
    pgfextractlength{lAB}{lisere}[south]{ctitre}
    node (titre) at (ctitre) [minimum width=longueur pt, minimum height=lAB * 2cm, align=center, font={bfseries}, preaction={fill=bleu045, fill opacity=.4}]{scalebox{2}{Publications scientifiques}\[1em] scalebox{2}{annee}\[1.5em]{Large Rapport interne}};
    pgfextractlength{lBC}[.25]{titre}[south]{current page}[south]
    node at($(titre.south)!.5!(part.south)$) {includegraphics[height=lBC cm]{Logo}};
}
end{bookcover}
end{document}