photobook/photobook.cls
Alex A. Naanou ce45a4829d tweaking...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
2021-07-30 00:08:28 +03:00

268 lines
8.1 KiB
TeX

%----------------------------------------------------------------------
%
%
% This does the following:
% - sets up the document/pdf for viewing as a book
% - adds support for page bleeds
% - adds basic templates for image pages (XXX)
%
%----------------------------------------------------------------------
\NeedsTeXFormat{LaTeX2e}
% XXX set release date...
\ProvidesClass{photobook}[2021/07/28 Photo book Latex class]
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
\RequirePackage{calc}
\RequirePackage{xargs}
\RequirePackage{iftex}
\RequirePackage{kvoptions}
\RequirePackage{etoolbox}
\RequirePackage{atbegshi}
\RequirePackage[unicode]{hyperref}
\RequirePackage{graphicx}
\RequirePackage{geometry}
\RequirePackage{eso-pic}
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Helpers...
\newcommand\@DeclareLiteralOptionTo[2]{%
\DeclareVoidOption{#2}{%
\expandafter\edef\csname photobook@#1\endcsname{#2}}}
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% options...
% pdf layout...
%
% see: hyperref's pdfpagelayout for more options...
\DeclareStringOption[TwoPageRight]{pdfpagelayout}[TwoPageRight]
\@DeclareLiteralOptionTo{pdfpagelayout}{SinglePage}
\@DeclareLiteralOptionTo{pdfpagelayout}{OneColumn}
\@DeclareLiteralOptionTo{pdfpagelayout}{TwoColumnRight}
\@DeclareLiteralOptionTo{pdfpagelayout}{TwoColumnLeft}
\@DeclareLiteralOptionTo{pdfpagelayout}{TwoPageRight}
\@DeclareLiteralOptionTo{pdfpagelayout}{TwoPageLeft}
% page geometry...
%
% <---> bleed <---> innerbleed
%
% + - - - - - - - - - - - - - - - - - - - - - + - + ^
% . . . | bleed
% . +---------------------------------------+ . v . . ---
% . | ^ . = .
% . | . . . . . . | . . = . ^
% . |<-- pagewidth ------------------------>= . |
% . | . | . . = . |
% . | | . = . textheight
% . | . | . . = . |
% . | pageheight . = . |
% . | . | . . = . |
% . | | <---> bindingoffset |
% . | . . . . . . | . . = . v
% . | v . = .
% . +---------------------------------------+ . ^ . . ---
% . . . . | bleed
% + - - - - - - - - - - - - - - - - - - - - - + - + v
% . .
% | <-- textwidth --------------> . |
% ^ binding line
%
% NOTE: innerbleed defaults to bleed...
% NOTE: if pagewidth/pageheight are set they will force recalculations
% and overriding of the paperwidth/paperheight if they were changed
% by the user code anywhere between \documentclass[..]{photobook}
% and \begin{document}...
\DeclareStringOption[5mm]{bleed}[5mm]
\DeclareStringOption{innerbleed}
% XXX do we need to rename these??? (used by lualatex??)
\DeclareStringOption{pagewidth}
\DeclareStringOption{pageheight}
\DeclareStringOption[0]{bindingoffset}[10mm]
% Image block size relative to text block...
%
% XXX better name...
\DeclareStringOption[0.85]{imageblockwidth}[1]
\DeclareStringOption[0.85]{imageblockheight}[1]
\DeclareStringOption[-0.05]{imageblockoffsettop}[0]
\DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{book}}
\ProcessKeyvalOptions*
% Parent class...
%
\LoadClass[9pt, final, openany]{book}
%----------------------------------------------------------------------
% Globals...
% NOTE: page and bleed block sizes are set via \RecalculatePageLengths
\newlength\pagewidth
\newlength\pageheight
% NOTE: these are equivalent to \paperwidth and \paperheight but are
% independent of them...
\newlength\bleedblockwidth
\newlength\bleedblockheight
\newlength\bleed
\setlength\bleed{\photobook@bleed}
\newlength\innerbleed
\setlength\innerbleed{
\ifx\photobook@innerbleed\empty
\bleed
\else
\photobook@innerbleed
\fi }
\newlength\bindingoffset
\setlength\bindingoffset{\photobook@bindingoffset}
%----------------------------------------------------------------------
% Commands...
\newcommand\Keywords[1]{%
\def\@keywords{#1}}
\newcommand\Subject[1]{%
\def\@subject{#1}}
\newcommand\RecalculatePageLengths{
% final page size...
\setlength\pagewidth{
\ifx\photobook@pagewidth\empty
\dimexpr \paperwidth - \bleed - \innerbleed \relax
\else
\photobook@pagewidth
\fi}
\setlength\pageheight{
\ifx\photobook@pageheight\empty
\dimexpr \paperheight - 2\bleed \relax
\else
\photobook@pageheight
\fi }
% page with bleeds...
% NOTE: this is essentially \paperwidth and \paperheight but we do
% not rely on them being defined -- photobook settings take
% priority over \paperwidth and \paperwidth...
\setlength\bleedblockwidth{\dimexpr
\bleed + \pagewidth + \innerbleed
\relax}
\setlength\bleedblockheight{\dimexpr
2\bleed + \pageheight
\relax} }
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% update global values...
\RecalculatePageLengths
%----------------------------------------------------------------------
% page / spread templates...
% XXX
%----------------------------------------------------------------------
\AtEndPreamble{
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Metadata...
\hypersetup{
pdfinfo={
Title={\@title},
Subject={\@subject},
Author={\@author},
Keywords={\@keywords},
},
pdfpagelayout=\photobook@pdfpagelayout,
}
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% Geometry...
\RecalculatePageLengths
\geometry{
% paper size (incl. bleeds)...
paperwidth=\bleedblockwidth, paperheight=\bleedblockheight,
bindingoffset=\bindingoffset,
% XXX these should be overridable...
% include header/footer/margin notes in printed area
twoside, includeall, nomarginpar,
ignorehead=false, ignorefoot=false, ignoremp=false,
% center printed area on page
vcentering, hcentering}
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
% pdf boxes...
% calculate pdf box dimensions in pt...
\edef\@pdfWidthPt{\strip@pt\dimexpr
0.996264009963\bleedblockwidth \relax}
\edef\@pdfHeightPt{\strip@pt\dimexpr
0.996264009963\bleedblockheight \relax}
\edef\@pdfBleedPt{\strip@pt\dimexpr
0.996264009963\bleed \relax}
\edef\@pdfTopPt{\strip@pt\dimexpr
0.996264009963\dimexpr
\bleedblockheight - \bleed \relax \relax}
\edef\@pdfRightPt{\strip@pt\dimexpr
0.996264009963\dimexpr
\bleedblockwidth - \bleed \relax \relax}
% set the boxes...
\ifxetex
% XXX not tested...
\AtBeginShipout{\AtBeginShipoutAddToBox{
\special{pdf:put @thispage <<
/MediaBox [0 0 \@pdfWidthPt\space \@pdfHeightPt]
/BleedBox [0 0 \@pdfWidthPt\space \@pdfHeightPt]
/ArtBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
/TrimBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
/CropBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
>>} }}
\else
\edef\pdfboxes{
/MediaBox [0 0 \@pdfWidthPt\space \@pdfHeightPt]
/BleedBox [0 0 \@pdfWidthPt\space \@pdfHeightPt]
/ArtBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
/TrimBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
/CropBox [\@pdfBleedPt\space \@pdfBleedPt\space \@pdfRightPt\space \@pdfTopPt]
}
\expandafter\pdfpageattr\expandafter{\pdfboxes}
\fi
} % \AtEndPreamble{..}
%----------------------------------------------------------------------
% vim:set ts=4 sw=4 :