now all book parameters can be defined once and the layout changed without the need to redefine things...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

examples/block2cover.tex

@@ -6,6 +6,11 @@
 	blockwidth=240mm, blockheight=220mm,
 	bleed=4mm,
 	bindingoffset=5mm,
+	spinewidth=15mm,
+	coverboardgrow=3mm,
+	spinefold=5mm,
+	spinefold=5mm,
+	coverflap=17mm,
 	% image block configuration...
 	imageblockwidth=0.98, imageblockheight=0.98,
 	imageblockoffsettop=-0.1,
@@ -19,11 +24,6 @@
 % This can be usefull when having a single setup file for multiple book
 % elemnts like page blocks, covers, endpapers and dust jackets...
 \def\layoutmode{cover}
-\setlength\spinewidth{15mm}
-\setlength\coverboardgrow{3mm}
-\setlength\spinefold{5mm}
-\setlength\spinefold{5mm}
-\setlength\coverflap{17mm}
 
 \ReInitPages
 

photobook.cls

@@ -76,8 +76,8 @@
 
 %%% NOTE: \def\<module-name>@[A-Z]+ macros will be visible to both the 
 %%%		code and the generated docs...
-\edef\photobook@FILEVERSION{v0.1.9}
+\edef\photobook@FILEVERSION{v0.1.10}
-\edef\photobook@FILEDATE{2023-03-01}
+\edef\photobook@FILEDATE{2023-03-11}
 
 
 %% \documentclass{ltxdoc}
@@ -710,6 +710,8 @@
 \newlength\coverflap
 \setlength\coverflap{\photobook@coverflap}
 
+\newlength\photobook@coverflap@active
+
 %% \DescribeMacro{\jacketwrap=<len>}
 %% \DescribeMacro{\jacketflap=<len>}
 %% \DescribeMacro{\jacketflapfront=<len>}
@@ -726,6 +728,11 @@
 \newlength\jacketflapback
 \setlength\jacketflapback{\photobook@jacketflapback}
 
+\newlength\photobook@jacketwrap@active
+\newlength\photobook@jacketflap@active
+\newlength\photobook@jacketflapfront@active
+\newlength\photobook@jacketflapback@active
+
 %% \DescribeMacro{\blockwidth=<len>}
 %% \DescribeMacro{\blockheight=<len>}
 %
@@ -992,17 +999,28 @@
 			\def\pdfpagelayout{SinglePage}\fi
 	\else
 		\def\pdfpagelayout{\photobook@pdfpagelayout}\fi
-	% items to ignore in different layouts...
+	% keep user settings but respect the current layout...
-	\ifcoverlayout\else
+	\ifcoverlayout
-		\setlength\coverflap{0pt}\fi
+		\setlength\photobook@coverflap@active{\coverflap}
-	\ifjacketlayout\else
+	\else
-		\setlength\jacketwrap{0pt}
+		\setlength\photobook@coverflap@active{0pt}\fi
-		\setlength\jacketflap{0pt}\fi
+	\ifjacketlayout
-	% flaps...
+		\setlength\photobook@jacketwrap@active{\jacketwrap}
-	\ifdim\jacketflapfront=0pt
+		\setlength\photobook@jacketflap@active{\jacketflap}
-		\setlength\jacketflapfront{\jacketflap}\fi
+		% flaps...
-	\ifdim\jacketflapback=0pt
+		\ifdim\jacketflapfront=0pt
-		\setlength\jacketflapback{\jacketflap}\fi
+			\setlength\photobook@jacketflapfront@active{\photobook@jacketflap@active}
+		\else
+			\setlength\photobook@jacketflapfront@active{\jacketflapfront}\fi
+		\ifdim\jacketflapback=0pt
+			\setlength\photobook@jacketflapback@active{\photobook@jacketflap@active}
+		\else
+			\setlength\photobook@jacketflapback@active{\jacketflapback}\fi
+	\else
+		\setlength\photobook@jacketwrap@active{0pt}
+		\setlength\photobook@jacketflap@active{0pt}
+		\setlength\photobook@jacketflapfront@active{0pt}
+		\setlength\photobook@jacketflapback@active{0pt}\fi
 	% block size...
 	\ifdim\blockwidth=0pt
 		% layout: block...
@@ -1046,7 +1064,7 @@
 			\pagestyle{empty}%
 			\setsepchar{,}%
 			\readlist*\pagefoldpanels{%
-				\the\jacketflapback,
+				\the\photobook@jacketflapback@active,
 				\the\jacketwrap,
 				\the\dimexpr
 					\coverboardgrow
@@ -1058,7 +1076,7 @@
 					\coverboardgrow
 					+ \pageblockwidth \relax,
 				\the\jacketwrap,
-				\the\jacketflapfront}%
+				\the\photobook@jacketflapfront@active}%
 			\photobook@setpagefold{out}
 			\setlength\blockwidth{
 				\dimexpr 
@@ -1067,8 +1085,8 @@
 					+ \spinewidth
 					+ 2\spinefold
 					+ 2\jacketwrap
-					+ \jacketflapfront
+					+ \photobook@jacketflapfront@active
-					+ \jacketflapback \relax}\fi
+					+ \photobook@jacketflapback@active \relax}\fi
 		% layout: endpaper...
 		\ifendpaperlayout
 			\pagestyle{empty}%
@@ -3812,15 +3830,15 @@
 \newenvironment{frontcover}{%
 	\begin{cell*}{
 				\bleed 
-					+ \jacketflapback 
+					+ \photobook@jacketflapback@active
-					+ \coverflap 
+					+ \photobook@coverflap@active
-					+ \jacketwrap 
+					+ \photobook@jacketwrap@active
 					+ \coverboardgrow 
 					+ \pageblockwidth 
 					+ 2\spinefold 
 					+ \spinewidth,
 				\bleed 
-					+ \coverflap }%
+					+ \photobook@coverflap@active }%
 			{ \pageblockwidth + \coverboardgrow }%
 			{ \pageblockheight + 2\coverboardgrow }%
 }{%
@@ -3829,11 +3847,11 @@
 \newenvironment{backcover}{%
 	\begin{cell*}{
 				\bleed 
-					+ \jacketflapback 
+					+ \photobook@jacketflapback@active
-					+ \coverflap 
+					+ \photobook@coverflap@active
-					+ \jacketwrap,
+					+ \photobook@jacketwrap@active,
 				\bleed 
-					+ \coverflap }%
+					+ \photobook@coverflap@active }%
 			{ \pageblockwidth + \coverboardgrow }%
 			{ \pageblockheight + 2\coverboardgrow }%
 }{%
@@ -3845,14 +3863,14 @@
 \newenvironment{spine}{%
 	\begin{cell*}{
 				\bleed 
-					+ \jacketflapback 
+					+ \photobook@jacketflapback@active
-					+ \coverflap 
+					+ \photobook@coverflap@active
-					+ \jacketwrap 
+					+ \photobook@jacketwrap@active
 					+ \coverboardgrow 
 					+ \pageblockwidth 
 					+ \spinefold,
 				\bleed 
-					+ \coverflap }%
+					+ \photobook@coverflap@active }%
 			{ \spinewidth }%
 			{ \pageblockheight + 2\coverboardgrow }%
 }{%
@@ -3873,15 +3891,15 @@
 \newenvironment{frontflap}{%
 	\begin{cell*}{
 				\bleed 
-					+ \jacketflapback 
+					+ \photobook@jacketflapback@active
-					+ 2\jacketwrap 
+					+ 2\photobook@jacketwrap@active
 					+ 2\coverboardgrow 
 					+ 2\pageblockwidth 
 					+ 2\spinefold 
 					+ \spinewidth,
 				\bleed 
-					+ \coverflap }% 
+					+ \photobook@coverflap@active }%
-			{ \jacketflapfront }%
+			{ \photobook@jacketflapfront@active }%
 			{ \pageblockheight + 2\coverboardgrow }%
 }{%
 	\end{cell*}}
@@ -3890,8 +3908,8 @@
 	\begin{cell*}{
 				\bleed,
 				\bleed 
-					+ \coverflap }%
+					+ \photobook@coverflap@active }%
-			{ \jacketflapback }%
+			{ \photobook@jacketflapback@active }%
 			{ \pageblockheight + 2\coverboardgrow }%
 }{%
 	\end{cell*}}

scripts/README.md

@@ -84,6 +84,9 @@ book/
 └── ...
 ```
 
+<!-- XXX
+For a live example see: ../examples/book -->
+
 Generate the block:
 ```shell
 $ make-spreads.sh ./pages > block-pages.tex