使用 .cls 文件中的新命令更改文本颜色

Question

我正在编写一个可以调用的类myclass。我尝试定义以下命令来更改文本颜色（文本、部分等）：

\RequirePackage{xcolor}
\newcommand{\setsectioncolor}[1]{\color[#1]}
\newcommand{\sectioncolor}{}

\newcommand{\setsubsectioncolor}[1]{\color{#1}}
\newcommand{\subsectioncolor}{}

\newcommand{\setsubsubsectioncolor}[1]{\color{#1}}
\newcommand{\subsubsectioncolor}{}

\newcommand{\settxtcolor}[1]{\color{#1}}
\newcommand{\txtcolor}{}

问题是我不知道如何定义\sectcolor等，确实需要一些帮助。我会尝试解释我想用这些命令做什么。

我想使用以下方法重新定义部分等\sectcolor：

\renewcommand{\section}{\@startsection {section}{1}{\z@}%
                                   {-3.5ex \@plus -1ex \@minus -.2ex}%
                                   {2.3ex \@plus.2ex}%
                                   {\headingfont\Large\bfseries\sectioncolor}}

Answer 1

这里有一个允许您调整分段单元颜色的实现。\resetXcolor提供了附加宏来删除任何先前的颜色定义。

\documentclass{article}

\usepackage{xcolor}

\newcommand{\setsectioncolor}[1]{\renewcommand{\sectioncolor}{\color{#1}}}
\newcommand{\sectioncolor}{}% Default is no colour
\newcommand{\resetsectioncolor}{\renewcommand{\sectioncolor}{}}% Restore (default) section colour

\newcommand{\setsubsectioncolor}[1]{\renewcommand{\subsectioncolor}{\color{#1}}}
\newcommand{\subsectioncolor}{}% Default is no colour
\newcommand{\resetsubsectioncolor}{\renewcommand{\subsectioncolor}{}}% Restore (default) subsection colour

\newcommand{\setsubsubsectioncolor}[1]{\renewcommand{\subsubsectioncolor}{\color{#1}}}
\newcommand{\subsubsectioncolor}{}% Default is no colour
\newcommand{\resetsubsubsectioncolor}{\renewcommand{\subsubsectioncolor}{}}% Restore (default) subsection colour

\makeatletter
% Taken from https://www.tug.org/svn/texlive/trunk/Master/texmf-dist/tex/latex/base/article.cls?view=co
\renewcommand\section{\@startsection {section}{1}{\z@}%
                                     {-3.5ex \@plus -1ex \@minus -.2ex}%
                                     {2.3ex \@plus.2ex}%
                                     {\normalfont\Large\bfseries\sectioncolor}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
                                       {-3.25ex\@plus -1ex \@minus -.2ex}%
                                       {1.5ex \@plus .2ex}%
                                       {\normalfont\large\bfseries\subsectioncolor}}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
                                       {-3.25ex\@plus -1ex \@minus -.2ex}%
                                       {1.5ex \@plus .2ex}%
                                       {\normalfont\normalsize\bfseries\subsubsectioncolor}}
\makeatother

\begin{document}

\tableofcontents

\setsectioncolor{red}
\section{A red section}

\setsubsectioncolor{green}
\subsection{A green subsection}

\setsubsubsectioncolor{blue}
\subsubsection{A blue subsubsection}

\resetsectioncolor
\section{A section}

\end{document}

注意sectsty已经提供了类似的设置：

\documentclass{article}

\usepackage{xcolor,sectsty}

\begin{document}

\tableofcontents

\sectionfont{\color{red}}
\section{A red section}

\subsectionfont{\color{green}}
\subsection{A green subsection}

\subsubsectionfont{\color{blue}}
\subsubsection{A blue subsubsection}

\sectionfont{\color{black}}
\section{A section}

\end{document}

Answer 2

您必须将颜色模型传递给标签\sectioncolor，修改MWE如下：

\documentclass{book}

\RequirePackage{xcolor}
\newcommand{\setsectioncolor}[1]{\color[#1]}
\newcommand{\sectioncolor}{\color{cyan}}

\newcommand{\setsubsectioncolor}[1]{\color{#1}}
\newcommand{\subsectioncolor}{}

\newcommand{\setsubsubsectioncolor}[1]{\color{#1}}
\newcommand{\subsubsectioncolor}{}

\newcommand{\settxtcolor}[1]{\color{#1}}
\newcommand{\txtcolor}{}

\newcommand{\headingfont}{\Large\bfseries}%

\begin{document}

\makeatletter
\renewcommand{\section}{\@startsection {section}{1}{\z@}%
                                   {-3.5ex \@plus -1ex \@minus -.2ex}%
                                   {2.3ex \@plus.2ex}%
                                   {\headingfont\sectioncolor}}
\makeatother

\section{Test}

\end{document}

我已经定义了一个新标签\headingfont并将其放入\Large\bfseries该标签中，因此如果您想更改字体样式，这很容易\section...