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letras sombreadas no capítulo

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letras sombreadas no capítulo

Esta semana escrevi esta palavra:

\documentclass{book}
\usepackage{xcolor}

\definecolor{Monvert}{RGB}{229,36,36}

\definecolorseries{MONVERT}{rgb}{last}{Monvert}{black}

\resetcolorseries[15]{MONVERT}
\begin{document}

\chapter{Test}
  \Huge
\textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{s}\textcolor{MONVERT!!+}{y}\textcolor{MONVERT!!+}{c}\textcolor{MONVERT!!+}{h}\textcolor{MONVER
T!!+}{o}\textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{a}\textcolor{MONVERT!!+}{t}\textcolor{MONVERT!!+}{h}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{l}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{g}\textcolor{MONVERT!!+}{y}
\end{document}

minha pergunta é: se eu quiser personalizar capítulos e seções da mesma maneira, como posso fazer isso? Qualquer visão ou solução será apreciada

Responder1

Uma versão preliminar, sem \sectionpeças. Provavelmente irá falhar se o título do capítulo contiver macros em vez de material não expansível.

\documentclass{book}
\usepackage{xcolor}

\definecolor{Monvert}{RGB}{229,36,36}

\definecolorseries{MONVERT}{rgb}{last}{Monvert}{black}

\resetcolorseries[50]{MONVERT}

\usepackage{xpatch}

\usepackage{pgffor}

\usepackage{xstring}

\usepackage{xparse}

\NewDocumentCommand{\shadetitle}{+m}{%
  \StrLen{#1}[\titlelength]
  \foreach \x in {1,...,\titlelength} {%
    \textcolor{MONVERT!!+}{\StrChar{#1}{\x}}%
  }%
}

\makeatletter
\xpatchcmd{\@makechapterhead}{\Huge \bfseries #1\par\nobreak}{\Huge \bfseries \shadetitle{#1}\par\nobreak}{}{}
\makeatother
\begin{document}



\chapter{Test it with a very long title}
  \Huge
  \textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{s}\textcolor{MONVERT!!+}{y}\textcolor{MONVERT!!+}{c}\textcolor{MONVERT!!+}{h}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{a}\textcolor{MONVERT!!+}{t}\textcolor{MONVERT!!+}{h}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{l}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{g}\textcolor{MONVERT!!+}{y}
\end{document}

insira a descrição da imagem aqui

EditarAlguma versão melhorada

\documentclass{book}
\usepackage{xcolor}

\definecolor{Monvert}{RGB}{229,36,36}

\definecolorseries{MONVERT}{rgb}{last}{Monvert}{black}

\resetcolorseries[100]{MONVERT}

\usepackage{xpatch}
\usepackage{pgffor}
\usepackage{xstring}
\usepackage{xparse}
\usepackage{blindtext}

\NewDocumentCommand{\shadetitle}{+m}{%
  \StrLen{#1}[\titlelength]%
  \foreach \x in {1,...,\titlelength} {%
    \textcolor{MONVERT!!+}{\StrChar{#1}{\x}}%
  }%
}

\makeatletter

%\xpatchcmd{\@ssect}{\hskip #1\relax #5}{#4{\hskip #1\relax \shadetitle{#5}}}{\typeout{Patch success}}{\typeout{Patch failure}}

% Does not work so far :-(
%\xpatchcmd{\@ssect}{\@svsechd{#4{\hskip #1\relax #5}}}{\@svsechd{#4{\hskip #1\relax \shadetitle{#5}}}}{\typeout{Patching ssect}}{}


% Patching the section header command
\xpatchcmd{\@sect}{\def\@svsechd{%
    #6{\hskip #3\relax
      \@svsec #8}%
  }}{%
    \def\@svsechd{%
      #6{\hskip #3\relax
        \@svsec \shadetitle{#8}}%
    }}{}{}
\xpatchcmd{\@sect}{\interlinepenalty \@M #8\@@par}{          \interlinepenalty \@M \shadetitle{#8}\@@par}{}{}
\xpatchcmd{\@makechapterhead}{\Huge \bfseries #1\par\nobreak}{\Huge \bfseries \shadetitle{#1}\par\nobreak}{}{}
\xpatchcmd{\@makeschapterhead}{\Huge \bfseries #1\par\nobreak}{\Huge \bfseries \shadetitle{#1}\par\nobreak}{}{}
\xpatchcmd{\@makechapterhead}{\huge\bfseries \@chapapp\space \thechapter}{\huge\bfseries \shadetitle{\@chapapp}\space \shadetitle{\thechapter}}{}{}

\makeatother
\begin{document}



\chapter{Test it with a very  title}
\section{And a shorter title}
  \Huge
  \textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{s}\textcolor{MONVERT!!+}{y}\textcolor{MONVERT!!+}{c}\textcolor{MONVERT!!+}{h}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{P}\textcolor{MONVERT!!+}{a}\textcolor{MONVERT!!+}{t}\textcolor{MONVERT!!+}{h}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{l}\textcolor{MONVERT!!+}{o}\textcolor{MONVERT!!+}{g}\textcolor{MONVERT!!+}{y}

\chapter*{Some other chapter}
\section*{Some other section}
\end{document}

insira a descrição da imagem aqui

Estou bem ciente de que isso é apenas um hack. Deve haver maneiras melhores, é claro. Provavelmente, é melhor colorir os tokens e não tentar identificar cada caractere na entrada.

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