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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% xsavebox.sty
%
% Copyright 2016--\today, Alexander Grahn
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Provides commands for saving and repeating any content (typeset text, external
% and inline [TikZ/PGF, PSTricks] graphics) similar to standard LaTeX's
% \savebox, \sbox, \usebox commands and the `lrbox' environment, but without
% code replication for smaller PDF output size
%
% content saving:
%
% (starred `*' variants allow for colour injection [pdflatex/lualatex only])
%
% \xsavebox{<name>}[<width>][<position>]{...}
% \xsavebox*{<name>}[<width>][<position>]{...}
%
% \xsbox{<name>}{...}
%
% \begin{xlrbox}{<name>}...\end{xlrbox}
% \begin{xlrbox*}{<name>}...\end{xlrbox*}
%
% content insertion:
%
% \xusebox{<name>}
% \the<name> %short form of \xusebox{<name>} for <name> composed of [a-zA-Z]
%
% Supports all known engines and backends including
% pdflatex, latex+dvips+ps2pdf, xelatex, latex+dvipdfmx, lualatex.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://mirrors.ctan.org/help/Catalogue/licenses.lppl.html
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is A. Grahn.
\RequirePackage{xparse}
\RequirePackage{pdfbase} %everything with `pbs_' prefix
\RequirePackage{l3keys2e}
\def\g@xsb@version@tl{0.2}
\def\g@xsb@date@tl{2016/03/07}
\ProvidesExplPackage{xsavebox}{\g@xsb@date@tl}{\g@xsb@version@tl}
{saveboxes for repeating content without code replication}
\msg_set:nnnn{xsavebox}{support~outdated}{
Support~package~`#1'~too~old.
}{
Please~install~an~up~to~date~version~of~`#1'.\\
Loading~xsavebox~will~abort!
}
\@ifpackagelater{pdfbase}{2016/03/07}{}{
\msg_error:nnn{xsavebox}{support~outdated}{pdfbase.sty}
\tex_endinput:D
}
%package options
%unknown package option error message
\msg_set:nnnn{xsavebox}{unknown~package~option}{Unknown~package~option~`#1'.}{
Package option~'#1'~is~unknown;\\
perhaps~it~is~spelled~incorrectly.
}
\tl_gset:Nn\g_xsb_margin_tl{3pt}
\keys_define:nn{xsavebox}{
margin .code:n = {
\setlength\l_tmpa_dim{#1}
\tl_gset:Nx\g_xsb_margin_tl{\dim_use:N\l_tmpa_dim}
},
unknown .code:n = {
\msg_error:nnx{xsavebox}{unknown~package~option}{\l_keys_key_tl}
}
}
\ProcessKeysOptions{xsavebox}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% content insertion (referencing, actually)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\DeclareDocumentCommand\xusebox{m}{\tl_use:c{the#1}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% saving content
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\DeclareDocumentCommand\xsavebox{smO{\width}O{c}m}{
\group_begin:
\IfBooleanTF{#1}{
%later colour injection possible (pdfTeX, LuaTeX)
\hbox_set:Nn\l_xsb_raw_box{\color@begingroup#5\color@endgroup} %raw
\hbox_set:Nn\l_xsb_box{ %content re-aligned
\makebox[#3][#4]{\color@begingroup#5\color@endgroup}
}
}{
%the LaTeX way (no colour injection)
\sbox\l_xsb_raw_box{#5} %raw content
\savebox\l_xsb_box[#3][#4]{#5} %re-aligned
}
%process one of \l_xsb_raw_box or \l_xsb_box
\dim_compare:nTF{\box_wd:N\l_xsb_raw_box>\box_wd:N\l_xsb_box}{
\str_if_eq_x:nnTF{#4}{s}{
%sqeezing content correctly
\IfBooleanTF{#1}{
%for colour injection
\hbox_set:Nn\l_xsb_box{
\makebox[\box_wd:N\l_xsb_raw_box][l]{
\makebox[#3][s]{\color@begingroup#5\color@endgroup}
}
}
}{
%no colour injection
\savebox\l_xsb_box[\box_wd:N\l_xsb_raw_box][l]{
\makebox[#3][s]{#5}
}
}
\xsb_process_box:nnnN{#2}{#3}{#4}\l_xsb_box
}{
\xsb_process_box:nnnN{#2}{#3}{#4}\l_xsb_raw_box
}
}{
\xsb_process_box:nnnN{#2}{\width}{c}\l_xsb_box
}
\group_end:
}
\DeclareDocumentCommand\xsbox{mm}{\xsavebox{#1}{#2}}
\DeclareDocumentEnvironment{xlrbox}{m}{
\xsb_xlrbox:
}{
\xsb_endxlrbox:n{#1}
}
\DeclareDocumentEnvironment{xlrbox*}{m}{
\xsb_xlrbox_star:
}{
\xsb_endxlrbox_star:n{#1}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\cs_new_nopar:Nn\xsb_xlrbox:{
\group_begin:
\hbox_set:Nn\l_xsb_box\bgroup\bgroup
\ignorespaces
}
\cs_new_nopar:Nn\xsb_endxlrbox:n{
\unskip
\egroup\egroup
\sbox\l_xsb_box{\hbox_unpack_clear:N\l_xsb_box}
\xsb_process_box:nnnN{#1}{\width}{c}\l_xsb_box
\group_end:
}
\cs_new_nopar:Nn\xsb_xlrbox_star:{
\group_begin:
\hbox_set:Nn\l_xsb_box\bgroup\color@begingroup
\ignorespaces
}
\cs_new_nopar:Nn\xsb_endxlrbox_star:n{
\unskip
\color@endgroup\egroup
\xsb_process_box:nnnN{#1}{\width}{c}\l_xsb_box
\group_end:
}
\cs_new_nopar:Nn\xsb_process_box:nnnN{
%measure natural dimensions
\cs_set_nopar:Npn\width {\box_wd:N#4}
\cs_set_nopar:Npn\height{\box_ht:N#4}
\cs_set_nopar:Npn\depth {\box_dp:N#4}
\cs_set_nopar:Npn\totalheight{\dimexpr\height+\depth\relax}
\tl_set:Nx\l_xsb_wd_tl{\dim_use:N\width}
\tl_set:Nx\l_xsb_ht_tl{\dim_use:N\height}
\tl_set:Nx\l_xsb_dp_tl{\dim_use:N\depth}
%evaluate width argument (allowing for calc-type expressions)
\setlength\l_tmpa_dim{#2}
\tl_set:Nx\l_xsb_new_wd_tl{\dim_use:N\l_tmpa_dim}
%temporarily (for distilling) push the box bounds somewhat; glyphs tend to
%be bigger than their bounding boxes
\hbox_set_to_wd:Nnn#4{\width+\g_xsb_margin_tl+\g_xsb_margin_tl}{
\hss\hbox_unpack_clear:N#4\hss
}
\box_set_ht:Nn#4{\height+\g_xsb_margin_tl}
\box_set_dp:Nn#4{\depth+\g_xsb_margin_tl}
%distill box to Form XObject
\pbs_pdfxform:nnn{1}{0}{#4}
%define command for inserting the m-boxed XObject reference
\tl_gset:cx{the#1}{
\exp_not:N\makebox[\l_xsb_new_wd_tl][#3]{
\exp_not:N\hbox_to_wd:nn{\l_xsb_wd_tl}{
\exp_not:N\vrule~width~\c_zero_dim~height~\l_xsb_ht_tl~
depth~\l_xsb_dp_tl
\exp_not:N\skip_horizontal:n{-\g_xsb_margin_tl}
\exp_not:N\pbs_pdfrefxform:n{\pbs_pdflastxform:}\hss
}
}
}
}
\box_new:N\l_xsb_box %for saving the re-aligned content
\box_new:N\l_xsb_raw_box %for saving the raw content
|
