support both cover images (#26)

This adds a new "template" parameter that can go into the front matter YAML. It can be either "greentop" or "bluetop"

Author: chrisfenner

img/bluetop.png

@@ -7,6 +7,7 @@ date: 8/11/2022
 year: 2022
 type: SPECIFICATION
 status: PUBLISHED
+template: bluetop
 ...
 
 \newpage

img/cover.png renamed to img/greentop.png

@@ -590,9 +590,7 @@ $endif$
 $if(titlepage)$
 \usepackage{pagecolor}
 \usepackage{afterpage}
-$if(titlepage-background)$
 \usepackage{tikz}
-$endif$
 $if(geometry)$
 $else$
 \usepackage[margin=0.5in]{geometry}
@@ -996,6 +994,16 @@ $endif$
   beforeskip=.5\baselineskip,
   afterskip=0em]{subparagraph}
 
+\newcommand{\coverbg}{/resources/img/greentop.png}
+
+$if(template)$
+  \ifthenelse{\equal{\detokenize{$template$}}{\detokenize{bluetop}}}
+  {
+    \renewcommand{\coverbg}{/resources/img/bluetop.png}
+  }
+  {}
+$endif$
+
 \begin{document}
 
 %%
@@ -1005,18 +1013,12 @@ $if(beamer)$
 $else$
 $if(titlepage)$
 \begin{titlepage}
-$if(titlepage-background)$
 \newgeometry{top=2cm, right=4cm, bottom=3cm, left=4cm}
-$else$
-\newgeometry{left=6cm}
-$endif$
 $if(titlepage-color)$
 \definecolor{titlepage-color}{HTML}{$titlepage-color$}
 \newpagecolor{titlepage-color}\afterpage{\restorepagecolor}
 $endif$
-$if(titlepage-background)$
-\tikz[remember picture,overlay] \node[inner sep=0pt] at (current page.center){\includegraphics[width=8.8in,height=11in]{$titlepage-background$}};
-$endif$
+\tikz[remember picture,overlay] \node[inner sep=0pt] at (current page.center){\includegraphics[width=8.8in,height=11in]{\coverbg}};
 \newcommand{\colorRule}[3][black]{\textcolor[HTML]{#1}{\rule{#2}{#3}}}
 \begin{flushleft}
 \noindent
@@ -1035,7 +1037,6 @@ $if(logo)$
 }
 $endif$
 
-$if(titlepage-background)$
 % The titlepage with a background image has other text spacing and text size
 {
   \begin{textblock*}{10.5cm}(7cm,11cm)
@@ -1073,25 +1074,7 @@ $if(titlepage-background)$
   \end{textblock*}
 
 }
-$else$
-{
-  \setstretch{1.4}
-  \vfill
-  \noindent {\huge \textbf{\textsf{$title$}}}
-  $if(subtitle)$
-  \vskip 1em
-  {\Large \textsf{$subtitle$}}
-  $endif$
-  \vskip 2em
-  \noindent {\Large \textsf{$for(author)$$author$$sep$, $endfor$}}
-  \vfill
-}
-$endif$
 
-$if(titlepage-background)$
-$else$
-\textsf{$date$}
-$endif$
 \end{flushleft}
 \end{titlepage}
 \restoregeometry