/
hyperref-generic.dtx
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/
hyperref-generic.dtx
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% \iffalse meta-comment
%
%% File: hyperref-generic.dtx
%
% Copyright (C) 2020 The LaTeX3 Project
%
% It may be distributed and/or modified under the conditions of the
% LaTeX Project Public License (LPPL), either version 1.3c of this
% license or (at your option) any later version. The latest version
% of this license is in the file
%
% http://www.latex-project.org/lppl.txt
%
% This file is part of the "pdfresources bundle" (The Work in LPPL)
% and all files in that bundle must be distributed together.
%
% The released version of this bundle is available from CTAN.
%
% -----------------------------------------------------------------------
%
% The development version of the bundle can be found at
%
% https://github.com/latex3/pdfresources
%
% for those people who are interested.
%
%<*driver>
\documentclass[full]{l3doc}
\begin{document}
\DocInput{\jobname.dtx}
\end{document}
%</driver>
% \fi
% \NewDocElement[
% idxgroup=hypersetup keys\actualchar\cs{hypersetup} keys,
% idxtype = {hypersetup key},
% printtype= \textit{\cs[no-index]{hypersetup key}}
% ]{Hypkey}{hypkey}
% \NewDocElement[
% idxgroup=Hooks,
% printtype= \textit{hook}
% ]{Hook}{hook}
%
% \title{^^A
% The \pkg{hyperref-generic} package \\ A generic driver for hyperref ^^A
% }
%
% \author{^^A
% The \LaTeX3 Project\thanks
% {^^A
% E-mail:
% \href{mailto:latex-team@latex-project.org}
% {latex-team@latex-project.org}^^A
% }^^A
% }
%
% \date{Released XXXX-XX-XX}
%
% \maketitle
% \begin{documentation}
% This package generates a generic driver for \pkg{hyperref} meant to be used
% with the new LaTeX PDF management code. It is loaded automatically
% if the PDF management code is active. The name of the driver will probably change.
%
% The generic driver can be used with pdflatex, lualatex, xelatex, latex with
% dvipdfmx, latex with dvips+ps2pdf. latex with dvips+distiller could work too
% but is untested. (x)dvipdfmx will probably soon support dvilualatex, then this
% combination should work too.
%
% The driver \emph{requires} the new PDF management code, so documents wanting to use it
% should start like this
% \begin{verbatim}
% \RequirePackage{pdfmanagement} %loads the code
% \DeclareDocumentMetadata % activates it
% {
% % options
% % e.g. pdf version, backend:
% % pdfversion=1.7,
% % backend = dvipdfmx
% }
% \end{verbatim}
%
% The new driver tries to be compatible with the standard \pkg{hyperref} drivers
% but there are nevertheless differences. Some of them due to the still experimental
% status of the driver, others are design decisions: one part of the project is
% to clean up and modernize the code. The following sections try to describe
% the differences but also to document some of the rationals of the changes,
% and to add some details and comments about the existing options and so to
% extend the \pkg{hyperref} manual.
%
% \section{Avoiding transition problems}
% Some code will only work properly after other packages have been adapted to
% the new PDF management code and the changes in this driver too.
% This will take some time. Until then it is recommended to follow
% the following rules
% \begin{itemize}
% \item Almost all options---with the exception of a few mentioned below in
% section~\ref{sec:pkg-options}---should be set in \cs{hypersetup},
% not as package option.
% \item Colors used in the keys for link colors should be defined after the
% package has been loaded.
% \item Report problems! Only known problem can be resolved.
% \end{itemize}
%
%
% \section{Bookmarks / outlines}
% The new driver doesn't contain code to handle bookmarks/outlines.
% Instead it forces the loading of the \pkg{bookmark} package
% unless the package option |bookmarks=false|
% has been used. Currently \pkg{bookmark} is loaded at the end of the preamble
% so if commands from \pkg{bookmark} are needed in the preamble the document
% should load it manually. This is subject to change at some time in the future.
%
% \section{PDF page size (mediabox)}
% The standard \pkg{hyperref} driver contain code to set the PDF page size.
% There is no real justification why this is done by \pkg{hyperref} apart from the
% fact that \LaTeX{} itself doesn't do it and that the needed special code could
% be added to the backend drivers.
%
% In the new driver this code is gone. The reason is not that it is
% difficult to set the MediaBox, actually it could be done with one line of code:
% \begin{verbatim}
% \pdfmanagement_add:nnn{Page}{MediaBox}
% {[0~0~\dim_to_decimal_in_bp:n{\paperwidth}~
% \dim_to_decimal_in_bp:n{\paperheight}]}
% \end{verbatim}
%
% The problem is to know which value to use (with the memoir class e.g.\cs{stockwidth}
% should be used instead of \cs{paperwidth}),
% and detecting this not a \pkg{hyperref} task. Instead the packages which change
% these values should also set the PDF page size. Also there are
% too many actors here: color/graphicx, geometry,the KOMA-classes, memoir,
% \ldots\ all try to set this.
%
% So if the PDF page size is wrong: load one of the other packages setting it
% e.g. the \pkg{color} or the \pkg{graphicx} package.
%
%
% \section{Link decorations: border, color, OCG-color, \ldots}
% Some main changes are
% \begin{itemize}
% \item The default colors have been changed.
% \item |citecolor| is no longer set with |allcolors| and it is not part of the
% color scheme, it is only supported for compability.
% \item a number of color schemes have been predefined.
% \end{itemize}
%
% \subsection{Background information}
% With the standard drivers \pkg{hyperref} allows either to color the link text,
% or to use a border around it.
% There is also a (rather unknown) option |frenchlinks| to use small caps
% for some links instead of colors.
%
% The \emph{link border} is a setting in the PDF annotation directory.
% It can be colored and styled (with the |<xxx>bordercolor|, |pdfborderstyle|
% and |pdfhighlight| keys), but the exact look depends on the PDF viewer.
% Such decorations are normally not printed.
%
% The \emph{link text} is colored with the standard color commands for text.
% Such a color is also printed, which is often not wanted. The printing
% can be avoided in PDF with so-called OCG-layers: They allow to add
% variants of a text along with instructions which variant should be used for
% viewing and which for printing. \pkg{hyperref} implements a rather simple version
% for links: The link text is put in a box and printed twice with different colors
% on different OCG layers. As boxes are used such links can't be broken. The
% package \pkg{ocgx2} implements a more sophisticated version which allows to
% use it for links broken over lines and pages.
%
% \pkg{hyperref} has keys to set the color and border for |link|, |url|, |file|,
% |menu| and |run| types. They correspond to the PDF annotation types
% |GoTo|, |URI|, |GoToR|, |Named| and |Launch|.
% Beside this there is a |anchorcolor| which isn't used at all, and |citecolor|
% which is a semantical category and doesn't fit to the other types.
%
% In the standard drivers the decoration options are more or less exclusive and global:
% One of the options (|colorlinks|, |ocgcolorlinks|, or borders) has to be
% chosen in the preamble and is then used for the whole document
% and all link types.
% Only colors and eventually the border style can be adjusted locally.
% But there is no technical reason for these restrictions:
% It is quite possible to change all these attributes
% at any time both by link type and locally. The restrictions of the current
% implementation can only be explained by the age of the code: \pkg{hyperref}
% has been created at a time when memory was small and the main drivers were html
% and postscript based.
%
% While link colors have been traditionally more or less
% under the control of \pkg{hyperref},
% the situation with other format options, like the font, is more complicated.
% The font in \cs{url} is for example determined by \cs{Urlfont},
% a command from the \pkg{url} package.
% In the case of internal (GoTo) references packages like \pkg{cleveref} or
% \pkg{biblatex} or \pkg{glossaries} offer formatting options too.
% Formatting here is often connected to semantics:
% an acronym should use a different font than a citation.
% While \pkg{hyperref} could offer options here, it would probably only clash
% with package formatting. It is more sensible not to interfere here. For this
% reason the |frenchlinks| option has been dropped.
%
% \subsection{New Keys}
% Some of the existing keys have been extended to allow individual setting for
% the link types |link|, |url|, |file| |menu| and |run|:
%
% \begin{itemize}
% \item Beside |pdfborder| there are also |linkborder|, |urlborder| etc
% \item Beside |pdfhighlight| there are also |linkhighlight|, |urlhighlight| etc
% \item Beside |pdfborderstyle| there are also |linkborderstyle|, |urlborderstyle| etc
% \item Beside |colorlinks| there are also |colorlink|, |colorurl| etc
% \item Beside |ocgcolorlinks| there are also |ocgcolorlink|, |ocgcolorurl|, etc %TODO
% \item Beside |hidelinks| there are also |hidelink|, |hideurl|, etc
% \item |colormodel| allows to set the model used in annotations,
% the allowed values are |rgb| or |cmyk|. |rgb| is the default.
% It does \emph{not} change the model of text colors. Be aware
% that while the PDF format allows cmyk (4 numbers) in the |/C| key of an annotation,
% this is often ignored by pdf viewers and the colors can be wrong.
% \item The boolean keys |url|, |link|, |run|, |menu|, |file| allow to deactivate
% locally the link types.
% \end{itemize}
%
% \subsection{Changed behaviour}
% \begin{itemize}
% \item |colorlinks| will as before disable the |pdfborder|, but it is possible
% to use the key in the document at any time, or to reenable the border if wanted.
% Internally |colorlinks| \& friends will no longer define/undefine
% |\Hy@colorlink|, but instead use the hooks provided by the \pkg{l3pdfannot} package.
% \item Color keys accept the following input syntax:
%
% \begin{tabular}{ll}
% model based & |urlbordercolor = [rgb]{1,1,0}| \\
% color expression & |urlbordercolor = red!50!blue| \\
% command & |urlbordercolor = \mycolor|
% \end{tabular}
%
% where |\mycolor| should expand to one of the other two syntax variants.
%
% \item The option |frenchlinks| does nothing at all.
% \item As mentioned above the support for |citecolor| and |citebordercolor| etc
% has been reduced. A package like \pkg{hyperref} can't keep track of such semantic
% contexts, like cite, acronym, glossaries, special references and maintain keys for
% them. The keys are not completly dropped as this would affect packages like
% \pkg{natbib}, but they have been separated and are no longer affected by
% group keys like |allcolors| but must be set individually instead.
%
% \end{itemize}
%
% \section{PDF strings}
%
% \pkg{hyperref} uses a command called \cs{pdfstringdef} to convert text input into
% something that makes sense and is valid in a PDF string, e.g. in the bookmarks
% or in the info dictionary or as form field values.
%
% As the handling of the outlines are delegated to the \pkg{bookmark} package, they
% will for now still use \cs{pdfstringdef}, but all other strings produced by
% this driver will use a new method based on the expl3 commands
% \cs{text_purify:n} and \cs{str_set_convert:Nnnn}. For normal text
% it shouldn't matter, but a variety of commands and math are handled differently.
% Like with \cs{pdfstringdef} they are a number of ways to adjust the outcome of
% \cs{text_purify:n}. These are described in the expl3 documentation interface3.pdf.
%
% \emph{The new method is under heavy development!}
%
% Important differences here are
% \begin{itemize}
% \item \emph{This new method requires that files are utf8-encoded}
% (at least if non-ascii chars are used in for PDF strings).
% \item \emph{All} robust commands are currently removed,
% unless an equivalent has been declared.
% \item Currently the new method is much more silent: it doesn't warn like
% \pkg{hyperref} if it removes commands.
% \end{itemize}
%
% \section{Package options from hyperref}\label{sec:pkg-options}
% Only a options are currently recognized by the new driver
% when used as package options as \pkg{hyperref} hasn't been adapted yet to pass
% them to the driver.
%
% So normally options should be set with \cs{hypersetup} after
% the package has been loaded. This is also the case for options which normally
% don't work in \cs{hypersetup}.
%
% Options that must be set as package options are
% \begin{itemize}
% \item |destlabels| (destination names are taken from \cs{label} if possible)
% \item |pdfpagelabels| (set PDF page labels)
% \item |implicit| (redefine \LaTeX\ internals)
% \item |hyperfigures| (according to the \pkg{hyperref} manual
% it makes figures hyper links, but actually is a no-op for most drivers, and it
% does nothing with this driver either.)
% \end{itemize}
%
% Options that can be set as package options are
% \begin{itemize}
% \item |debug|, |verbose| (a boolean)
% \item |bookmarks| (a boolean)
% \item |plainpages|
% \item |draft|, |final|
% \item |hypertexnames|
% \end{itemize}
%
% Ignored options:
% \begin{itemize}
% \item All driver options like |pdftex|, |dvipdfmx|, \ldots
% \item |raiselinks| (only used in the dviwind, textures and tex4ht driver anyway)
% \item |frenchlinks|
% \item |setpagesize|
% \end{itemize}
%
% \section{Disabling links}
%
% \pkg{hyperref} knows like many packages the options |draft| and |final|.
% With \pkg{hyperref} they can be used as package options or in the preamble
% in \cs{hypersetup} and disable links and anchors completely.
% The new driver passes the options also to the \pkg{bookmark} package if
% \pkg{bookmark} hasn't been loaded yet as bookmarks can't work properly if
% the anchors from hyperref are missing.
%
% \DescribeHypkey{link}%
% \DescribeHypkey{url}%
% \DescribeHypkey{file}%
% \DescribeHypkey{run}%
% \DescribeHypkey{menu}%
% The |draft| option is a global option that can't be undone (at least not easily).
% So the new driver offers also boolean keys |link|, |url|, |file|, |run| and |menu|
% which allow to locally disable a link type. So e.g.
% |\hypersetup{link=false}\ref{abc}| will give a reference without link (this
% is naturally also possible with |\ref*{abc}|). This disables also all hooks of
% the link type, so the link is for example no longer colored. It also removes the
% implicit grouping of the content.
%
%
% \section{Draftmode}
% pdftex and other engines knows a
% draftmode which can be set with |\pdfdraftmode=1|
% and \pkg{hyperref} honors this in some places. The new
% driver ignores it, for example |pagelabels| are created in any case.
% With today's computer power there is not much to gain and it only complicates
% the code.
%
% This should not be confused with the |draft| and |final| package options! They
% are still honored.
%
% \section{Dropped options}
% A number of options are ignored by this driver
% \begin{description}
% \item[pdfversion] The pdfversion should be set in \cs{DeclareDocumentMetadata}
% \item[setpagesize] The key is ignored and the PDF page size is not
% set. Load \pkg{color} or \pkg{graphicx} or use a class which sets the PDF page size.
% \item[breaklinks] The option does nothing sensible anyway (apart from triggering
% a warning). Currently with latex+dvips links can't be broken. But there is work
% in progress to change this.
% \item[unicode] This is always true.
% \item[pdfa] If this option is set to true \pkg{hyperref} normally checks and sets
% a small number of requirements for the PDF standard PDF/A.
% The key is ignored with this driver. Instead the wanted standard should be declared
% in \cs{DeclareDocumentMetadata}:
% \begin{verbatim}
% \DeclareDocumentMetadata{standard=A-2b}
% \end{verbatim}
% Currently |A-1b|, |A-2b|, |A-3b| can be set.
% The support for various requirements is still incomplete, but the parts that
% \pkg{hyperref} checked are implemented:
% \begin{itemize}
% \item The |/F| key is added to links and |Print| is activated, |Hidden|, |Invisible|,
% |NoView| are deactivated.
% \item |/NeedAppearances| is suppressed
% \item Pushbuttons, which use the action |/S/JavaScript| are suppressed.
% \item Resetbuttons, which use the action |/S/ResetForm| are suppressed.
% \item In widget annotations, the /AA dictionary is suppressed.
% \end{itemize}
% \end{description}
% \subsection{Destinations}
% Destinations (sometimes call anchors in the \pkg{hyperref} documentation)
% are the places a link jumped too. Unlike the name may suggest they don't described
% an exact location in the PDF. Instead a destination contains a reference to
% a page along with an instruction how to display this page.
% The normally used \enquote{XYZ \textit{top left zoom}} for example instructs
% the viewer to show the page with the given \textit{zoom} and
% the top left corner at the \textit{top left} coordinates---which then gives
% the impression that there is an anchor at this position.
%
% From these instructions two (|Fit| and |FitB|) don't take an argument.
% All others take one (|FitH|, |FitV|, |FitBH|, |FitBV|)
% or more (|XYZ|, |FitR|) arguments. These arguments are normally
% coordinates, |XYZ| takes also a zoom factor. The coordinates are
% absolute coordinates in |bp| relative to the lower left corner
% of the PDF.
%
% With the primitive command \cs{pdfdest} of pdftex almost all instructions are created
% with a keyword only: The needed coordinate is calculated automatically from the location
% the \cs{pdfdest} command is issued. So to get a specific coordinate one has to
% move the command to the right place. E.g.
% \begin{verbatim}
% \AddToHookNext{shipout/background}
% {\put(0,-\pdfpageheight+100bp){\pdfdest name{destA} FitH\relax}}
% \end{verbatim}
%
% Exceptions are the |XYZ| instruction, where pdftex accepts a keyword
% |zoom| followed by a zoom factor, and the |FitR| instruction
% which understands the keywords |width|, |height| and |depth|
% followed by a dimension, which is then used to calculate a rectangle relative to the
% current location. If no keywords are given the dimensions are taken from the surrounding
% box---which can also lead to zero sized areas.
%
% The manual of \pkg{hyperref} gives a bit the impression as if this
% coordinates can be set manually by the user but as described above this is
% mostly wrong: It is for normal destination only possible with a dvi-backend like
% dvips which make use of |pdfmark.def|. pdftex and luatex can use manual coordinates
% only for |pdfstartview| and |pdfremotestartview|.
% As dvips was the first driver of \pkg{hyperref} the option |pdfview| was at first
% developed for it and then adapted to pdftex. But this had the effect that the handling
% of the option |pdfview| is inconsequent across the backend and engines:
% For example with |pdfview=FitH 100| pdftex ignores the
% number and calculates its own, while dvips sets the coordinate to the absolute
% 100. The zoom factor of |XYZ| is not supported by the pdftex driver at all, and
% |FitR| only partially.
%
% The generic driver consolidate this but tries to stay compatible with the other
% drivers as far as possible.
% It also takes into account that |pdfview| and |pdfstartview| and |pdfremotestartview|
% have different requirements: While for the first relative coordinates are fine,
% for the two others absolute coordinates are more sensible.
%
% \DescribeHypkey{pdfview}
% \DescribeHypkey{pdfstartview}
% \DescribeHypkey{pdfremotestartview}
% So with this driver the options
% |pdfview|, |pdfstartview| and |pdfremotestartview| take
% the following options:
% \begin{itemize}
% \item |Fit|, |FitB|, |FitH|, |FitV|,
% |FitBH|, |FitBV| which can be followed by a positive integer (separated by a space) or the
% keyword |null|.
% The number can be gives as a \meta{dimension expression} surrounded with
% \cs{hypercalcbp}. The driver redefines this command to use
% \cs{dim_to_decimal_in_bp:n}.
% \begin{itemize}
% \item |pdfview| will ignore the integer and any other arguments and calculate
% the expected coordinates as described above for pdftex with all
% supported engines and backends.
% \item |pdfstartview| and |pdfremotestartview| will pass the optional
% number or keyword after expansion as absolute coordinate. Missing numbers will
% be filled up with |null|.
% \end{itemize}
%
% \item |XYZ|. This can be followed (separated by spaces) by up to three
% positive integers or keywords |null| which are then taken as \textit{top left zoom}
% in this order. \textit{zoom} is a factor, so e.g. 0.5 will give a scaling of 50\%.
% \begin{itemize}
% \item |pdfview| will use the last value as \textit{zoom}, ignore all other values
% and calculate the expected coordinates as described above for pdftex with all
% supported engines and backends (this means it is possible to use |XYZ 2| to
% set a zoom of 200\%, it is not necessary to fill in dummy values.)
% \item |pdfstartview| and |pdfremotestartview| will pass the optional
% numbers or keyword after expansion as absolute coordinates and zoom.
% Missing numbers will be filled up with |null|.
% \end{itemize}
% This new behaviour is in part incompatible with previous handling with the dvips driver.
%
%
% \item |FitR|.
% If no argument (separated by spaces) follows then
% |pdfview| will use with pdftex and luatex
% the automatic calculation of the coordinates from the encompassing box. With
% dvips and (x)dvipdfmx it will fall back to |Fit|.
% |pdfstartview| and |pdfremotestartview| will fallback to |Fit| too.
%
% If arguments (separated by spaces) follow they should be
% four numbers representing \texttt{left bottom right top}.
% \begin{itemize}\item
% |pdfview| will use the values to calculate coordinates relative to the current
% location. So |0 -100 200 400| will give a \enquote{box} of width 200bp,
% height 400bp and depth 100dp that the destination should encompass.
% Missing numbers will be set to 0. But one should be aware that is it is quite
% unpredicable how viewers which support |FitR| handles zero sizes.
%
% \item |pdfstartview| and |pdfremotestartview| will pass
% the values as absolute coordinates.
% \end{itemize}
% \end{itemize}
%
%
%\section{Assorted key descriptions}
%The following gives a few details to some keys that are perhaps not
%completly described in the manual, or are a bit different in this driver.
%The list is alphabetic.
%
% \DescribeHypkey{bookmarkstype} This key takes as value the extension of a list
% like |toc| or |lof|. If this list uses \cs{addcontentsline} the content will
% be added to the bookmarks. The key can be use in \cs{hypersetup} and also in
% the middle of the document to switch the list.
%
% \DescribeHypkey{colormodel} With |colormodel| the colormodel used in the |/C|
% key of the annotation array and in similar keys is set. It does not affect
% the text and graphics colors in the page stream.
% Possible choices are |rgb| (three numbers in the array) and |cmyk| (four numbers).
% While the PDF reference allows four numbers, PDF readers don't necessarly handle
% this correctly, so the value can be wrong.
%
% \DescribeHypkey{destlabel} This is a boolean key. Currently it must be set
% as package option. If set to true, the name
% of a destination is taken from a following \cs{label}, if there is one before
% the next destination command. This requires two compilations to get
% the correct coordinates in the destination. In the first compilation
% the alias name is recorded in the aux-file:
% \begin{verbatim}
% \hyper@newdestlabel{section.1.2}{sec:sec2}
% \end{verbatim}
% The next compilation can then make use of it.
% The two-pass could be avoided in the future with a better labeling system,
% where the name if set earlier.
%^^A %% This is an adapted version of hluatex.def
%^^A %% meant to test the use of the commands
%^^A %% from pdfmanagement.sty
%^^A %%
%^^A %% drivers are loaded in line 4745 in hyperref.sty in a \Hy@AtEndOfPackage command.
%^^A %%%%%%%%%%%%%%%%%%%%%%%%%%%%
%^^A %% list of new internal commands
%^^A %% __hyp_link_goto_begin:nw : start command for links to internal destination
%^^A %% replaces \find@pdflink
%^^A %% __hyp_link_goto_end:
%^^A %% __hyp_destination:n : sets an anchor, replaces \new@pdflink
%^^A %% \__hyp_PageLabels_gpush: : puts pagelabels in the catalog, used on every storing
%^^A %% PDF String (text)
%^^A %% *\@@_text_pdfstring:nnN : replaces Hy@pstringdef, converts #1 to pdfstring in encoding #2
%^^A %% and stores in N
%^^A %% Build with:
%^^A %% *\@@_text_purify:nN
%^^A %% *\@@_text_cleanup:N
%^^A %% *\@@_text_convert:nN
%^^A %%
%^^A %% Destinations (dest)
%^^A %% \l_@@_dest_box
%^^A %%
%^^A %% References (ref)
%^^A %% *\@@_ref_label:nn
%^^A %% *\@@_ref_if_exist:nn
%^^A %% *\@@_ref_check:nn
%^^A %% % helps to display key list messages
%^^A %% \@@_clist_display:n
%^^A %%
%^^A %% \__hyp_info_generate_addons: what did this do??
%^^A %%
%^^A %% \g__hyp_AcroForm_CoFields_prop
%^^A %% \g__hyp_AcroForm_Fields_prop
%^^A %%
%^^A %% \g_@@_dest_pdfstartpage_tl ,
%^^A %% \g_@@_dest_pdfstartview_tl ,
%^^A %% \l_@@_dest_pdfremotestartview_tl ,
%^^A
%^^A %% Constants
%^^A %% *\c_@@_map_annot_hyp_prop
%^^A %% *\c_@@_dest_undefined_tl
%^^A %% Temp variables
%^^A %% \l_@@_tmpa_seq
%^^A %% \l_@@_tmpa_box
%^^A %% \l_@@_tmpa_tl
%^^A %% \l_@@_tmpa_str
%^^A %% \l_@@_tmpa_int
%^^A %%
%^^A %% \l_@@_dest_name_tmpa_tl
%^^A %% \l_@@_uri_tmpa_tl
%^^A %% \l_@@_filename_tmpa_tl
%^^A %% \l_@@_para_tmpa_tl
%^^A %% \l_@@_text_tmpa_str
%^^A %% \g_@@_text_tmpa_str
%^^A %% \l_@@_CheckmarkYes_tl
%^^A %% \l_@@_CheckmarkOff_tl
%^^A %% \l_@@_RadioYes_tl
%^^A %% \g_@@_colormodel_tl
%
%^^A %% \l_@@_dest_pdfview_tl
%^^A %% list of commands which probably will have to change
% \end{documentation}
% \begin{implementation}
% \section{\pkg{hyperref-generic} driver implementation}
% \begin{macrocode}
%<*package>
%<@@=hyp>
% \end{macrocode}
% \begin{macrocode}
\ProvidesFile{hgeneric-experimental.def}
[2020/12/26 v0.71 %
Hyperref driver for luaTeX]
\RequirePackage{etoolbox} %why?
% \end{macrocode}
% We need l3color for the color export command and need to activate
% the patches for color and xcolor.
% It would be too late for colors defined earlier, but is the best one
% can do for now.%
% \begin{macrocode}
\RequirePackage{l3color}
\ExplSyntaxOn
\cs_gset_eq:NN \@expl@color@set@@@@nnn \color_set:nnn
\file_input:n {hyperref-colorschemes.def}
\ExplSyntaxOff
\@ifpackageloaded{xcolor}{\@firstoftwo}{\@secondoftwo}
{
\RequirePackage{xcolor-patches-tmp}
\XC@@@@names
}
{
\AddToHook{package/after/xcolor}
{\RequirePackage{xcolor-patches-tmp}\XC@@@@names}
}
% \end{macrocode}
%
%
% \section{messages}
% Redirect the message name:
% \begin{macrocode}
\ExplSyntaxOn
\prop_gput:Nnn \g_msg_module_name_prop { hyp }{ hyperref }
% \end{macrocode}
% At first a message for the testing of the resource management
% \begin{macrocode}
\msg_new:nnnn
{ hyp }
{ missing-resource-management }
{ The~PDF~resource~management~is~required~for~this~hyperref~driver! }
{
Activate~it~with \\
\tl_to_str:n{\RequirePackage{pdfmanagement}}\\
\tl_to_str:n{\DeclareDocumentMetadata{<options>}}\\
before~\tl_to_str:n{\documentclass}
}
% \end{macrocode}
% The pdfversion should be set in \cs{DeclareDocumentMetadata}
% \begin{macrocode}
\msg_new:nnnn
{ hyp }
{ pdfversion-disabled }
{
This~hyperref~driver~ignores~the~pdfversion~key!\\
Set~the~pdfversion~in~\token_to_str:N \DeclareDocumentMetadata
}
{
For example:\\
\tl_to_str:n
{
\DeclareDocumentMetadata { pdfversion=1.7 }
}
}
% \end{macrocode}
% A generic message for ignored keys.
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ key-dropped }
{
This~hyperref~driver~ignores~the~key~#1!\\
Please~check~the~documentation.
}
% \end{macrocode}
% pdf/A messages for fields, this will probably be moved to an external package
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ pdfa-no-push-button }
{ PDF/A:~Push~button~with~JavaScript~is~prohibited }
\msg_new:nnn
{ hyp }
{ pdfa-no-reset-button }
{ PDF/A:~Reset~action~is~prohibited }
% \end{macrocode}
% pdf/A message for not allowed Named actions
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ pdfa-no-named-action }
{ PDF/A:~Named~action~#1~is~prohibited }
% \end{macrocode}
% A message if the destination name is empty.
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ empty-destination-name }
{
Empty~destination~name,\\
using~`#1'
}
% \end{macrocode}
% A message if the destination check fails
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ invalid-destination-value }
{
Invalid~value~`#1'~of~`#2' \\
is~replaced~by~`Fit'~\msg_line_context:.
}
% \end{macrocode}
% Some options or values should not be used in older pdf versions
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ ignore-deprecated-or-unknown-option-in-pdf-version }
{
Option~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2.~Ignored.
}
\msg_new:nnn
{ hyp }
{ ignore-deprecated-or-unknown-value-in-pdf-version }
{
Value~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2.~Ignored.
}
\msg_new:nnn
{ hyp }
{ replace-deprecated-or-unknown-value-in-pdf-version }
{
Value~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2. Value~`#3'~is used instead.
}
% \end{macrocode}
% During development not all standard hyperref keys are known, this issues a warning
% for now:
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ unknown-key }
{
unknown~key~#2~of~module~’#1’~set~to~’#3’.
}
% \end{macrocode}
% There are a lot choice keys. This defines messages which shows the valid
% choices if a faulty one has been used:
% \begin{macrocode}
\cs_new:Npn \@@_clist_display:n #1 {*~#1\\}
\msg_new:nnn
{ hyp }
{ unknown-choice }
{
Value~'#3'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
\clist_map_function:nN { #2 }\@@_clist_display:n
}
\msg_new:nnn
{ hyp }
{ unknown-choice+empty }
{
Value~'#3'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
\clist_map_function:nN { #2 }\@@_clist_display:n
An~empty~value~removes~the~setting.
}
\msg_new:nnn
{ hyp }
{ no-bool }
{
Value~'#2'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
*~true\\
*~false \\
*~and~an~empty~value~which~removes~the~setting.\\
No~value~is~equivalent~to~using~`true`.
}
% \end{macrocode}
% \section{Variants}
% \begin{macrocode}
\cs_generate_variant:Nn\pdf_destination:nn {nf}
% \end{macrocode}
% \section{Overwriting/providing commands from hyperref}
% hyperref checks driver version, we need to suppress this during the development
% \begin{macrocode}
\chardef\Hy@VersionChecked=1 %don't check the version!
% \end{macrocode}
%
% \begin{macro}[EXP]{\hypercalcbp}
% We define a better (expandable) version of \cs{hypercalcbp}
% \begin{macrocode}
\cs_set_eq:NN \hypercalcbp \dim_to_decimal_in_bp:n
% \end{macrocode}
% \end{macro}
% This is used as default file extension, should probably go into hyperref.
% \begin{macrocode}
\providecommand*{\XR@ext}{pdf} %
% \end{macrocode}
%
% This command must be provided for now, but they are unused by the driver:
% \begin{macrocode}
\providecommand\@pdfborder{}
\providecommand\@pdfborderstyle{}
\newcommand\OBJ@OCG@view {} % needed in hyperref
\def\Hy@numberline#1{#1\c_space_tl} %needed by bookmark
% \end{macrocode}
%
% We force unicode as option. As bookmarks are still using \cs{pdfstringdef}
% we also need to load puenc.def.
% \begin{macrocode}
\HyPsd@LoadUnicode
\Hy@unicodetrue
\let\HyPsd@pdfencoding\HyPsd@pdfencoding@unicode
\Hy@DisableOption{unicode}
% \end{macrocode}
% The pdfversion should be set in \cs{DeclareDocumentMetadata} but we must
% copy it to the \pkg{hyperref} command:
% \begin{macrocode}
\cs_set_eq:NN \Hy@pdfminorversion \pdf_version_minor:
\cs_set_eq:NN \Hy@pdfmajorversion \pdf_version_major:
% \end{macrocode}
% \begin{macrocode}
\legacy_if:nT { Hy@ocgcolorlinks }
{
\pdf_version_compare:NnT < {1.5}
{
\msg_warning:nnnx
{ hyp }
{ ignore-deprecated-or-unknown-option-in-pdf-version }
{ ocgcolorlinks } { \pdf_version_major:.\pdf_version_minor: }
\Hy@ocgcolorlinksfalse
\Hy@DisableOption{ocgcolorlinks}
}
}
\legacy_if:nT { Hy@setpdfversion }
{
\msg_warning:nn { hyp }{ pdfversion-disabled }
}
\Hy@DisableOption{pdfversion}
% \end{macrocode}
% \cs{Acrobatmenu} should use the new internal link command
% \begin{macrocode}
\RenewDocumentCommand \Acrobatmenu { m m }
{
\hyper@linknamed #1 #2
}
% \end{macrocode}
%
% \cs{hypersetup} should set the new keys. As there are a number of new keys
% which would error with the hyperref key family we do not execute
% |\kvsetkeys{Hyp}|. This means the driver has to provide code for every key!
% \begin{macrocode}
\cs_set_protected:Npn \hypersetup #1
{
\keys_set:nn { hyp / setup }{ #1 }
}
% TODO for now unknown keys should only give warnings.
\keys_define:nn { hyp / setup }
{
unknown .code:n =
{
\msg_warning:nnxxx { hyp } { unknown-key }
{ hyp~/~setup }{ \l_keys_key_str } { #1 }
}
}
% \end{macrocode}
%
% \section{Compability commands}
% \subsection{citecolor}
% cite is a link context. So we define a hook, and the keys in terms of this hook.
%
% \begin{macrocode}
\hook_new:n{hyp/link/cite}
\tl_new:N \l_@@_annot_citecolor_tl
\tl_set:Nn \l_@@_annot_citecolor_tl {@@_color_cite}
\tl_new:N \l_@@_annot_citebordercolor_tl
\tl_set:Nn \l_@@_annot_citebordercolor_tl {@@_color_citeborder}
\color_set:nnn {@@_color_cite}{HTML}{2E7E2A}
\color_set:nn {@@_color_citeborder}{@@_color_cite!60!white}
\keys_define:nn { hyp / setup }
{
,citecolor .tl_set:N = \l_@@_annot_citecolor_tl
,citebordercolor .tl_set:N = \l_@@_annot_citebordercolor_tl
}
\hook_gput_code:nnn { hyp/link/cite }{hyp/cite}
{
\hypersetup
{
,linkbordercolor= \l_@@_annot_citebordercolor_tl
,linkcolor = \l_@@_annot_citecolor_tl
}
}
% \end{macrocode}
% \section{Checks}
% The driver can not work properly if the pdfmanagement is not active,
% as keys need to write to the catalog and to info. But annotations
% and outlines should work.
% So should this be a fatal error?
% Should there be a difference between missing and inactive management?
% TODO
% \begin{macrocode}
\bool_lazy_and:nnF
{ \cs_if_exist_p:N \pdfmanagement_if_active_p: }{ \pdfmanagement_if_active_p: }
{ \msg_error:nn { hyp}{ missing-resource-management } }
% \end{macrocode}
% Outlines/bookmarks require the bookmark package.
% TODO check pdfpagemode if booksmarks are suppressed.
% \begin{macrocode}
\legacy_if:nT { Hy@bookmarks }
{
\AddToHook{begindocument/before}[hyperref/bookmark]{\RequirePackage{bookmark}}
}
\legacy_if:nT {Hy@draft}
{
\PassOptionsToPackage{draft}{bookmark}
}
% \end{macrocode}
%
% \section{Reference and label commands}
% The code uses the l3ref-tmp package which
% must have been loaded as pdfmanagement is a requirement.
% The commands use after the module prefix always |_ref|.
%
% At first a label command which add the space commands from LaTeX:
% \begin{macro}
% {
% \@@_ref_label:nn,
% \@@_ref_if_exist:nn,
% \@@_ref_check:nn,
% \@@_ref_value:nn
% }
% \begin{macrocode}
%
\cs_new_protected:Npn \@@_ref_label:nn #1 #2 %label/attributes
{
\@bsphack
\ref_label:nn{#1}{#2}
\@esphack
}
\cs_generate_variant:Nn \@@_ref_label:nn {en}
% \end{macrocode}
% This provides a condition which tests if a label/attribute combination is known
% \begin{macrocode}
\prg_new_eq_conditional:NNn \@@_ref_if_exist:nn \ref_if_exist:nn { p , T , F, TF }
\prg_generate_conditional_variant:Nnn \@@_ref_if_exist:nn {en} { p , T , F, TF }
% \end{macrocode}
% This checks if the label/attribute is known and issues a warning if not.
% It then also triggers the standard rerun message.
% \begin{macrocode}
\cs_new_protected:Npn \@@_ref_check:nn #1 #2 %label/attribute
{
\@@_ref_if_exist:nnF {#1}{#2}
{
\protect\G@refundefinedtrue
\@latex@warning
{
Reference~`\tl_to_str:n {#1}'~with~attribute~`\tl_to_str:n {#2}'~
on~page~\thepage~\space undefined
}
}
}
\cs_generate_variant:Nn \@@_ref_check:nn {en}
% \end{macrocode}
% This retrieves a value, it is a simple wrapper around the \cs{ref_value:nn}
% \begin{macrocode}
\cs_new:Npn \@@_ref_value:nn #1 #2
{
\ref_value:nn{#1}{#2}
}
\cs_generate_variant:Nn \@@_ref_value:nn {en}
% \end{macrocode}
% \end{macro}
% \section{Variables}
% \subsection{Private temporary variables}
% At first a few generic tmp variables
% \begin{variable}
% {
% \l_@@_tmpa_tl,
% \l_@@_tmpa_seq,
% \l_@@_tmpa_int,
% \l_@@_tmpa_box,
% \l_@@_tmpa_str,
% }
% \begin{macrocode}
\box_new:N \l_@@_tmpa_box
\tl_new:N \l_@@_tmpa_tl
\seq_new:N \l_@@_tmpa_seq
\int_new:N \l_@@_tmpa_int
\str_new:N \l_@@_tmpa_str
% \end{macrocode}
% \end{variable}
%
% A number of more specific tmp variables. These will perhaps disappear or change.
% \begin{variable}
% {
% \l_@@_dest_name_tmpa_tl,
% \l_@@_uri_tmpa_tl,
% \l_@@_filename_tmpa_tl,
% \l_@@_para_tmpa_tl
% \l_@@_text_tmpa_str
% \g_@@_text_tmpa_str
% }
% TODO: document and check use!
% \begin{macrocode}
\tl_new:N \l_@@_dest_name_tmpa_tl
\tl_new:N \l_@@_uri_tmpa_tl
\tl_new:N \l_@@_filename_tmpa_tl
\tl_new:N \l_@@_para_tmpa_tl
\str_new:N \l_@@_text_tmpa_str
\str_new:N \g_@@_text_tmpa_str
% \end{macrocode}
% \end{variable}
%
% \subsection{Constants}