responsive (16dec23)

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+The Responsive Package
+
+Version 0.1
+
+Change font sizes and other typographic details in LaTeX documents depending on
+the page dimensions.
+
+The Responsive package for LaTeX enables dynamic adjustment of document
+elements for various output formats and devices. Key features include:
+
+- Font Size Adjustment: Set the font size to achieve an average number of
+  characters per line, enabling suitable font size selection for various sizes
+  of page formats or devices such as tablets and e-book readers.
+
+- Typographic Scales: Choose from predefined or define custom typographic
+  scales using options such as number and ratio.
+
+- Media Queries: Test document properties using media queries, allowing
+  conditional execution of code based on test results.
+
+- Line Spacing Control: adjust line spacing determining the x-height percentage
+  for enhanced readability.
+
+Copyright: 2023-2023 Michal Hoftich
+
+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://www.latex-project.org/lppl.txt
+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 Michal Hoftich.
+
diff --git a/Master/texmf-dist/doc/latex/responsive/responsive-doc.bib b/Master/texmf-dist/doc/latex/responsive/responsive-doc.bib
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+@manual{responsive,
+  title = {The Responsive package},
+  author = {Hoftich, Michal},
+  url = {https://github.com/michal-h21/responsive-latex},
+  urldate = {2023-03-30}, 
+  date = {2023-03-28},
+}
+
+@manual{rmodepdf,
+  title = {Rmodepdf},
+  author = {Hoftich, Michal},
+  url = {https://github.com/michal-h21/rmodepdf},
+  urldate = {2023-03-30}, 
+  date = {2023-03-28},
+}
+@manual{rdrview,
+  title = {Rdrview},
+  author = {Ernesto Fernández},
+  url = {https://github.com/eafer/rdrview},
+  urldate = {2023-03-30}, 
+  date = {2023-03-28},
+}
+@manual{luavlna,
+  title = {The Luavlna package},
+  subtitle = {Prevent line breaks after single letter words, units, or academic titles},
+  author = {Hoftich, Michal},
+  url = {https://ctan.org/pkg/luavlna},
+  urldate = {2023-03-30}, 
+  date = {2023-03-28},
+  version = {0.1k},
+}
+
+@manual{linebreaker,
+  title = {The Linebreaker package},
+  subtitle = {Prevent overflow boxes with LuaLaTeX},
+  author = {Hoftich, Michal},
+  url = {https://ctan.org/pkg/linebreaker},
+  urldate = {2023-03-30}, 
+  date = {2023-03-21},
+  version = {0.1c},
+}
+
+@manual{lua-widow-control,
+  title = {The Lua-widow-control package},
+  subtitle = {Automatically remove widows and orphans from any document},
+  author = {Chernoff, Max},
+  url = {https://ctan.org/pkg/lua-widow-control},
+  urldate = {2023-03-30}, 
+  date = {2022-11-22},
+  version = {3.0.0},
+}
+
+@article{chernoff,
+  doi = {10.5300/2022-1-4/49},
+  author = {Chernoff, Max},
+  title = {Automatically Removing Widows and Orphans with lua-widow-control},
+  journal = {Zpravodaj Československého sdružení uživatelů TeXu},
+  volume = {32},
+  number = {1},
+  pages = {49-76},
+  issn = {1211-6661},
+  year = {2022},
+  url = {https://dml.cz/handle/10338.dmlcz/151108}
+}
+
+@manual{luaxml,
+  title = {The Luaxml package},
+  subtitle = {Lua library for reading and serialising XML files},
+  author = {Hoftich, Michal},
+  url = {https://ctan.org/pkg/luaxml},
+  urldate = {2023-03-30}, 
+  date = {2021-10-06},
+  version = {0.1q},
+}
+
+@online{mortensen,
+  title = {The Typographic Scale},
+  author = {Spencer Mortensen},
+  year = {2011},
+  url = {https://spencermortensen.com/articles/typographic-scale/},
+  urldate = {2023-03-30}, 
+}
+
+@article{cavazza,
+  title = {Modern CSS Techniques To Improve Legibility},
+  author = {Edoardo Cavazza},
+  journal = {Smashing Magazine},
+  date = {2020-07-22},
+  url = {https://www.smashingmagazine.com/2020/07/css-techniques-legibility/},
+  urldate = {2023-03-30}, 
+}
diff --git a/Master/texmf-dist/doc/latex/responsive/responsive-doc.pdf b/Master/texmf-dist/doc/latex/responsive/responsive-doc.pdf
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diff --git a/Master/texmf-dist/doc/latex/responsive/responsive-doc.tex b/Master/texmf-dist/doc/latex/responsive/responsive-doc.tex
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+\documentclass{ltxdoc}
+\newcommand\authormail[1]{\footnote{\textless\url{#1}\textgreater}}
+\ifdefined\HCode
+  \renewcommand\authormail[1]{\space\textless\Link[#1]{}{}#1\EndLink\textgreater}
+\fi
+
+\ifdefined\gitdate\else
+  \def\gitdate{\today}
+  \def\version{devel}
+\fi
+
+
+
+% \usepackage[noautomatic]{responsive}
+\usepackage[]{responsive}
+\usepackage{linebreaker}
+\usepackage{caption}
+\usepackage{subcaption}
+\usepackage{graphicx}
+\usepackage{microtype}
+\usepackage{longtable}
+\usepackage{booktabs}
+\usepackage[style=iso-authoryear]{biblatex}
+\addbibresource{responsive-doc.bib}
+\newenvironment{changelog}{\longtable{@{} l p{30em}}}{\endlongtable}
+\newcommand\change[2]{#1 & #2\\}
+\ifdefined\HCode
+  % I want to convert parts of the document to images,
+  % so I need to use Type 1 fonts for the correct conversion with Dvisvgm
+  \usepackage{ebgaramond}
+\else
+\usepackage{fontspec}
+\setmainfont{EB Garamond}[Numbers=OldStyle]
+\setmonofont{Inconsolatazi4-Regular.otf}[Scale=MatchLowercase]
+\fi
+
+\newcommand\StartDescribe[1]{%
+  \par\medskip\noindent\DescribeMacro#1
+}
+\usepackage{lipsum}
+\title{The Responsive Package}
+\author{Michal Hoftich\authormail{michal.h21@gmail.com}}
+\date{Version \version, \gitdate} 
+\NewDocElement[macrolike = false ,
+toplevel = false,
+idxtype
+= key,
+idxgroup = Package keys,
+% printtype = \textit{key}
+]{Key}{key}
+
+\newcommand\printsize[1]{\csname #1\endcsname\par\noindent Sample\par}
+\newcommand\showscale[2][.5\textwidth]{%
+  \noindent\fbox{%
+    \begin{minipage}{#1}
+      \ResponsiveSetup{#2}
+      \setsizes[34]{25}
+      \printsize{huge}
+      \printsize{LARGE}
+      \printsize{Large}
+      \printsize{large}
+      \hrule
+      \printsize{normalsize}
+      \hrule
+      \printsize{small}
+      \printsize{footnotesize}
+    \end{minipage}
+  }
+    \ifx\relax#2\relax Default parameters\else\texttt{#2}\fi\hfill\null
+}
+\makeindex
+
+\begin{document}
+\maketitle
+\begin{abstract}
+Responsive design aims to display text and other design elements well on
+variety of outputs, including electronic devices or various paper sizes.
+It originated on the Web, where it uses Cascading Style Sheets to change 
+design elements. 
+
+This package tries to achieve similar result with \LaTeX. The main aim is to 
+support output of multiple editions of one document with 
+readable font sizes regardless of the physical size of the produced PDF,
+from smartphones or e-ink readers to printed A4 pages.
+\end{abstract}
+
+\clearpage
+
+\tableofcontents
+
+\section{Introduction}
+
+This package aims to facilitate the creation of documents for multiple output
+formats, such as various page sizes, e-book readers, or even mobile phones.
+
+One of the issues that needs to be addressed is setting the correct font size
+for readability. The default font size in LaTeX is 10 points, regardless of the
+page size. This is an appropriate font size for A5 format pages. For A4 format,
+the font size should be larger, while it may be smaller for smaller displays of
+e-readers and mobile phones. Similarly, we can adjust the line spacing, which
+also affects text readability depending on the font size and page size.
+
+Web browsers face a similar problem as they must display text on both large PC
+monitors and smaller displays of laptops, tablets, and mobile phones. The
+solution they use is called \textit{responsive design}.
+
+Responsive design is a method of web design that allows flexible and dynamic
+adaptation of the appearance and layout of page content to different display
+devices. One of the key elements of responsive design is a flexible structure
+that enables adjusting the size of elements on the page to the display device.
+
+Another important element is media queries. These allow defining rules based on
+the properties of the display device, such as screen width and height or output
+type (paper, display). Thanks to these rules, the same page code can be
+well-displayed on both large monitors and mobile devices or when printing. 
+
+The Responsive package is inspired by these principles. Its main function
+is to set the font size based on the page size and the approximate number of
+characters that should fit on the page (see figure~\ref{fig:example}). It also adjusts the typographic scale
+(influencing font size, for example, in headings or footnotes), line height,
+and supports a simple version of media queries.
+
+
+\section{Features}
+
+
+\subsection{Fitting Font Size to the Page Size}
+
+Regardless of the width of the page, there is a certain range of the number of
+characters that should be displayed on average per line of text to ensure good
+readability. With a larger number of characters, the reader may have difficulty
+quickly moving to the next line, while shorter lines may lead to skipping
+lines. 
+
+The Responsive package automatically sets the width of the text to a chosen number of characters.
+Figure~\ref{fig:example} shows a difference in the font size in two
+different text widths.
+
+
+\begin{figure}[htbp]
+  \caption{Example of changing font size based on the width of the text block:}\label{fig:example}
+\begin{subfigure}[t]{0.45\textwidth}
+  \centering
+\fbox{%
+\begin{minipage}{4cm}
+\ResponsiveSetup{}
+\setsizes{}
+
+\lipsum[1]
+
+\end{minipage}}
+\caption{Text width 4\,cm}
+\end{subfigure}
+% \hfill
+\begin{subfigure}[t]{0.45\textwidth}
+  \centering
+\fbox{%
+\begin{minipage}{6cm}
+\ResponsiveSetup{}
+\setsizes{}
+
+% \lipsum[1]
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut purus elit,
+vestibulum ut, placerat ac, adipiscing vitae, felis. Curabitur dictum gravida
+mauris. Nam arcu libero, nonummy eget, consectetuer id, vulputate a,
+magna. Donec vehicula augue eu neque. Pellentesque habitant morbi
+tristique senectus et netus et malesuada fames ac turpis egestas. Mauris
+ut leo. Cras viverra metus rhoncus sem. Nulla et lectus vestibulum urna
+fringilla ultrices. Phasellus eu tellus sit amet tortor gravida placerat. Integer
+sapien est, iaculis in, pretium quis, viverra ac, nunc.
+
+\end{minipage}}
+\caption{Text width 6\,cm}
+\end{subfigure}
+\end{figure}
+
+
+\subsection{Typographic Scale}
+
+The typographic scale is a set of predetermined font sizes used to establish a
+consistent visual style for a document or website. These sizes are typically
+expressed in point units and progressively increase or decrease by a specific
+interval along the scale.
+
+A typographic scale may include sizes for headings, footnotes, and body text.
+Proper use of a typographic scale helps create a visual hierarchy that enhances
+the readability and aesthetic appeal of the text. 
+
+In \LaTeX, the typographic scale is accessible through commands such as \verb|\large|,
+\verb|\huge|, or \verb|\scriptsize|. Each of these commands is one interval
+away from the previous size. 
+
+I drew inspiration from Spencer Mortensen's article (\citeyear{mortensen}), which defines several
+different typographic scales and provides a method for easily creating
+additional scales.
+The default scale in the Responsive package,
+which closely aligns with the scale used in \LaTeX, is referred to as \verb|tetratonic|.
+The package also offers additional scales described in the
+article, such as the golden scale based on the golden ratio. 
+See Figure~\ref{fig:scale} for differences between the default scale and scale based on the 
+golden ratio.
+
+The Responsive package includes several predefined typographic scales, but you
+can also define your own. All scales are defined using the options
+\verb|number| and \verb|ratio|, specifying how many steps (\verb|number|) the
+font size increases by the size of \verb|ratio|. For example scale with \verb|number| of 2
+and \verb|ratio| of 5, will double the font size over 5 steps.
+Table~\ref{tbl:scales} lists all predefined scales.
+
+\begin{table}[htbp]
+  \centering
+  \begin{tabular}{l l l}
+    \toprule
+    name & number & ratio\\
+    \midrule
+    heptatonic & 7 & 2\\
+    pentatonic & 5 & 2\\
+    tetratonic & 4 & 2\\
+    tritonic & 3 & 2\\
+    golden & 2 & 1.618\\\bottomrule
+  \end{tabular}
+  \caption{Predefined typographic scales}\label{tbl:scales}
+\end{table}
+
+
+\begin{figure}[htbp]
+  \caption{Sample of Typographic Scales (the default font size is highlighted with lines)}\label{fig:scale}
+  \begin{subfigure}[b]{0.45\textwidth}
+\fbox{%
+\begin{minipage}{5cm}
+\setsizes{45}
+
+\showscale{}
+
+\end{minipage}}
+\caption{Default scale}
+\end{subfigure}
+\begin{subfigure}[b]{0.45\textwidth}
+% \begin{verbatim}
+% \ResponsiveSetup{scale=golden}
+% \end{verbatim}
+\fbox{%
+\begin{minipage}{5cm}
+% \ResponsiveSetup{scale=golden}
+\setsizes{45}
+
+\showscale{scale=golden}
+
+\end{minipage}}
+\caption{Golden ratio scale}
+\end{subfigure}
+\end{figure}
+% % https://spencermortensen.com/articles/typographic-scale/
+
+
+
+% \showscale{}
+% \showscale{scale=heptatonic}
+% \showscale{scale=tritonic}
+% \showscale{scale=golden}
+% \showscale{scale=none,ratio=1.3,number=2}
+
+\subsection{Line height}
+
+In the default settings of \LaTeX, the line spacing is set to the font size
+multiplied by a factor of 1.2. For different fonts and page sizes, a different
+line spacing may be appropriate. Similarly, distinct values may be suitable for
+the printed and electronic versions of the document. 
+
+The Responsive package provides two options which allows you to change the line spacing
+(Figure~\ref{fig:lineratio}). 
+
+First is the  \verb|lineratio| option, which bases the line height 
+on the ratio between x-height of the current font and the desired height. 
+I've found this method in article by Edoardo Cavazza in the \textit{Smashing Magazine}~(\citeyear{cavazza}).
+The value of the \verb|lineratio| option determines what percentage of the total line
+height is the \verb|x-height|. The higher this value, the lower the line will be. For
+different fonts, the same ratio may lead to different line heights because each
+font has a different \verb|x-height| value. The appropriate lineratio size needs to be
+determined experimentally. The default value should roughly correspond to a
+line height of 1.2, the default in \LaTeX.
+
+Another option is \verb|lineheight|, which
+is similar to the CSS property \verb|line-height|. Using it, we can choose the
+line height as a multiple of the font size.
+
+
+
+
+\begin{figure}[htbp]
+  \caption{Changing the line spacing by adjusting the value of \texttt{lineratio}.}\label{fig:lineratio}
+  \begin{subfigure}[b]{0.45\textwidth}
+\fbox{%
+\begin{minipage}{5cm}
+\ResponsiveSetup{lineratio=38}
+\setsizes{65}
+
+\lipsum[1]
+
+\end{minipage}}
+\caption{lineratio=38}
+\end{subfigure}
+\begin{subfigure}[b]{0.45\textwidth}
+\fbox{%
+\begin{minipage}{5cm}
+\ResponsiveSetup{lineratio=34}
+\setsizes{65}
+
+\lipsum[1]
+
+\end{minipage}}
+\caption{lineratio=34}
+\end{subfigure}
+\end{figure}
+
+% https://www.smashingmagazine.com/2020/07/css-techniques-legibility/
+
+\subsection{Media Queries}
+
+Media queries are a technique that allows web developers to dynamically adapt
+the appearance and behavior of websites based on various device properties,
+such as screen width and height, device orientation, color support, and more.
+Thanks to these conditions, responsive and flexible websites can be created
+that automatically adjust to different types and sizes of devices on which they
+are displayed.
+
+How can this technique be useful for \LaTeX\ package authors? They could, for
+example, set the font size, line spacing, and other elements for specific page
+dimensions. Once the user chooses the page size based on the device size for
+which they want to compile the document, these elements are automatically
+adjusted. For instance, a package author could define that if the width of the
+text block is smaller than a certain dimension, fewer characters will be
+displayed on each line compared to longer lines (Figure~\ref{fig:mediaquery}). 
+
+The media query used for this figure looks like this:
+
+\begin{verbatim}
+\mediaquery{max-textwidth=4cm}
+{\ResponsiveSetup{lineratio=38}\setsizes{45}}
+\ResponsiveSetup{lineratio=34}\setsizes{60}}
+\end{verbatim}
+
+This media query defines that if the width of the text is smaller than or equal to 4 cm, a
+smaller number of characters will be displayed per line to prevent the font
+from being too small and difficult to read. Additionally, a smaller line
+spacing will be applied.
+
+
+
+\newcommand\mdtest{%
+  \mediaquery{max-textwidth=4cm}
+  {\ResponsiveSetup{lineratio=38}\setsizes{45}}
+  {\ResponsiveSetup{lineratio=34}\setsizes{60}}
+  \lipsum[1]
+}
+
+\begin{figure}[htbp]
+  % \centering
+  % \begin{subcaptionblock}{0.25\textwidth}
+  \caption{Change number of characters and line spacing depending on the text width using Media queries}\label{fig:mediaquery}
+  % \begin{subcaptiongroup}
+  \begin{subfigure}[t]{0.40\textwidth}
+    \centering
+    \begin{minipage}{4cm}
+      { \mdtest
+        
+      }
+    \end{minipage}
+    \caption{Text width of 4\,cm with 45 characters}
+  \end{subfigure}
+  \hfill
+    % \hspace{2em}
+  \begin{subfigure}[t]{0.55\textwidth}
+    \centering
+    \begin{minipage}{6cm}
+      { \mdtest 
+
+      }
+    \end{minipage}
+  \caption{Text width of 6\,cm with 60 characters}
+  \end{subfigure}
+  
+\end{figure}
+
+The tests available in media queries are listed in Table~\ref{tbl:mediaqueries}.
+Those expecting dimensional units also have variants using \texttt{min-} and \texttt{max-}, which
+do not test exact values but rather whether the provided value is less than, 
+greater than, or equal to the tested parameter. Tests without these variants evaluate for an exact match.
+The test for a two-column layout is special in that it does not expect any
+testing values. It evaluates to true if the document uses the \texttt{twocolumn} option.
+
+
+
+\begin{table}[htbp]
+  \centering
+  \begin{tabular}{ll}
+    \toprule
+    test & possible values \\
+    \midrule
+    textwidth & dimensional unit \\
+    textheight & dimensional unit \\
+    paperwidth & dimensional unit\\
+    paperheight & dimensional unit\\
+    orientation & landscape, portrait\\
+    twocolumn & none \\
+    \bottomrule
+  \end{tabular}
+  \caption{Tests available in media queries}\label{tbl:mediaqueries}
+\end{table}
+
+
+
+
+\section{Package Options}
+
+The following options can be passed as package options used in \cmd{\usepackage}, 
+or later in the document using the \cmd{\ResponsiveSetup} command.
+
+\medskip
+
+\noindent \DescribeKey{characters} Approximate number of characters that should fit to a text line. Default value is 66.
+
+\noindent \DescribeKey{noautomatic}  Disable automatic setting of font sizes, line spacing and typographic scale in the document. You can set them 
+later using the \cmd{\setsizes} and \cmd{\ResponsiveSetup} commands.
+
+\noindent \DescribeKey{scale} Select named typographic scale. Default scale is
+\texttt{tetratonic}, which is the most similar to the default scale used by
+\LaTeX.
+
+\noindent \DescribeKey{number} The number of steps during which the text size is multiplied by the amount specified in the \texttt{ratio} option.
+
+\noindent \DescribeKey{ratio} The amount by which the font size will increase over a given number of steps.
+
+\noindent \DescribeKey{lineratio} The ratio used in calculating the line spacing. Default value is 33.3333, which should produce similar line spacing as the default \LaTeX\ setting.
+
+\noindent \DescribeKey{lineheight} Calculate line spacing by a fixed ratio, similarly to the CSS \texttt{lineheight} property.
+
+\noindent \DescribeKey{boxwidth} Width of line that is used for font size calculations in the \cmd{\setsizes} command. Default value is \cmd{\textwidth}.
+
+
+
+
+\section{Commands}
+
+\StartDescribe\ResponsiveSetup
+\cmd\ResponsiveSetup\marg{options}
+
+\noindent It allows you to reset the package options later in the document. You
+need to call the \cmd{\setsizes} command to reset font sizes explicitly if you use this command
+outside of the document preamble, or when using the \texttt{noautomatic} option.
+
+\StartDescribe\setsizes
+\cmd\setsizes\oarg{line height ratio}\marg{number of characters per line}
+
+\noindent It sets the text size so that the specified average number of
+characters fit on a line. If you do not provide the number of characters, the
+package option \texttt{characters} will be used.
+
+
+\StartDescribe\fonttobox
+\cmd\fonttobox\oarg{line height ratio}\marg{text width}\marg{text}
+
+\noindent Set the text size so that the specified text in the second parameter has
+the specified size in the first parameter. Optionally, you can set the line
+height ratio.
+
+\StartDescribe\mediaquery
+\cmd\mediaquery\marg{media query test}\marg{true code}\marg{false code}
+
+\noindent
+It tests the document's properties using media queries and executes code based on the test results.
+The code can typically use \cmd\ResponsiveSetup, but you can also execute any other commands.
+
+\StartDescribe\DeclareMediaQueryMatcher
+\cmd\DeclareMediaQueryMatcher\marg{test name}\marg{\LaTeX\ 3 boolean query test}
+
+\noindent Declares a new test for a media query. The tests can use LaTeX 3 boolean tests,
+and in case of a positive result, it must execute the command 
+\cmd\mediaquerytrue.
+
+\StartDescribe\fixtextheight
+\cmd\fixtextheight
+
+\noindent It adjusts the page height, header, and footer to prevent underflow
+\cmd{\vbox} warnings in the output routine.
+
+
+
+\section{Troubleshooting}
+
+Occasionally, you can run into issues caused by the change of font sizes. \LaTeX\ sets lot of parameters 
+depending on the base font size. We try to recalculate them according to the new font size, but you can still
+experience some issues, described in following subsections.
+
+\subsection{Underfull \texttt{\textbackslash vbox} warning}
+
+Occasionally, you can get the following warning:
+
+\begin{verbatim}
+Underfull \vbox (badness 6412) has occurred while \output is active []
+\end{verbatim}
+
+We calculate the page height that suits  for the font size, but often,
+we would get error when a bigger font is used on the page,
+for example in chapters. When you set font sizes in the document preamble,
+text height should be changed automatically. If you reset font sizes later in the
+document, you need to use the \cmd{\fixtextheight} command. It should help in
+most cases. If not, you can try the following hack.
+This trick should fix \cmd{\vbox} errors in the output routine, but it can lead 
+to an irregular number of lines on pages.
+
+
+\begin{verbatim}
+\ExplSyntaxOn
+\def\@textbottom{\vskip \z@ \@plus \resp_font_size \@minus \resp_font_size}
+\ExplSyntaxOff
+\end{verbatim}
+
+\section{License}
+
+Permission is granted to copy, distribute and/or modify this software
+under the terms of the \LaTeX\ Project Public License, version 1.3.
+
+
+\section{Changes}
+
+\begin{changelog}
+  \change{2023-12-13}{Version 0.1 released.}
+  \change{}{Finished documentation.}
+  \change{2023-12-07}{Added the \texttt{lineheight} property.}
+  \change{}{Use floating point numbers for the lineratio.}
+  \change{2023-12-06}{ChangeLog started.}
+\end{changelog}
+% \section{Examples}
+% \PrintIndex
+
+\printbibliography[heading=bibintoc]
+
+
+
+
+
+\end{document}