将章节标题延伸到边距之外，奇数/偶数无法与 fancyhdr 配合使用

Question

我正在使用以下代码：

\documentclass[11pt,a4paper,twoside=semi]{article}


\usepackage{kantlipsum}
\usepackage{tikz}

%*****************Margins and MarginNotes******************

\usepackage[top=2.8cm, bottom=2.8cm,outer=7cm, inner=1.75cm, marginparwidth=4.25cm, marginparsep=0.75cm]{geometry}

%*******************Header & Footer***********************
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LO,RE]{\footnotesize UNIT TITLE}
\fancyfoot[LO,RE]{\thepage}
\renewcommand{\headrulewidth}{0pt}
\setlength{\headwidth}{\textwidth}
\addtolength{\headwidth}{\marginparsep}
\addtolength{\headwidth}{\marginparwidth}

%***********************Document*******************
\usepackage[explicit]{titlesec}

\titleformat{\section}{\sffamily \bf \Large}{}{0em}
{%
\begingroup
  \color{gray!30}%
  \titleline{\leaders\hrule height 1.75em \hskip 4pt plus 1.2 fill \kern 0pt\relax}%
\endgroup\vskip-1.323em\hskip0.5em\sffamily \thesection\hskip1em#1
\nobreak
}

\begin{document}
\section{Section 1}
\kant[12]
\marginpar{The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\kant[8]
\marginpar{The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\kant[7]\marginpar{The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\section{Section 1}
\kant[7]
\marginpar{The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}

\newpage

\end{document}

这样会生成具有特定样式的章节标题的文章。我的问题是：1.) 如何调整章节标题后面的灰色框的宽度，以便它延伸到边注上方？

2.) 尽管为标题指定了 LO、RE，但它们仍然只出现在左侧，无论页面是奇数还是偶数，这是为什么？我希望 UNIT 标题页眉在奇数页的左侧，在偶数页的右侧。

Answer 1

没有twoside=semi文章选项。

您可以使用左侧和右侧字段模拟双面打印（用于交替标题）。

我还简化了部分标题下方灰色栏的定义。别忘了设置headheight。

\documentclass[11pt,a4paper]{article}

\usepackage{kantlipsum}
\usepackage{tikz}

%*****************Margins and MarginNotes******************

\usepackage[
  top=2.8cm,
  bottom=2.8cm,
  outer=7cm,
  inner=1.75cm,
  marginparwidth=4.25cm,
  marginparsep=0.75cm,
  headheight=13.6pt,
  %showframe,% remove for production version
]{geometry}

%*******************Header & Footer***********************
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyheadoffset[R]{\dimexpr\marginparsep+\marginparwidth}
\fancyfootoffset[R]{\dimexpr\marginparsep+\marginparwidth}
\fancyhead[L]{\ifodd\value{page}\footnotesize UNIT TITLE\fi}
\fancyhead[R]{\ifodd\value{page}\else\footnotesize UNIT TITLE\fi}
\fancyfoot[L]{\ifodd\value{page}\thepage\fi}
\fancyfoot[R]{\ifodd\value{page}\else\thepage\fi}
\renewcommand{\headrulewidth}{0pt}

%***********************Document*******************
\usepackage{titlesec}

\titleformat{\section}
  {\sffamily\bfseries\Large}
  {}
  {0em}
  {\graybackground}

\newcommand{\graybackground}[1]{%
  \makebox[\textwidth][l]{%
    \colorbox{gray!30}{%
      \parbox{\dimexpr\textwidth+\marginparsep+\marginparwidth-2\fboxsep}{
        \vspace{3pt}
        #1\par
        \vspace{3pt}
      }%
    }%
  }%
}

\begin{document}

some text to get a page
\clearpage

\section{Section 1}
\kant[12]
\marginpar{\sloppy The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\kant[8]
\marginpar{\sloppy The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\kant[7]\marginpar{\sloppy The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}
\section{Section 2}
\kant[7]
\marginpar{\sloppy The reader should be careful to observe that the objects in space and time are the clue to the discovery of, certainly, our a priori knowledge, by means of analytic unity.}

\newpage

\end{document}

Answer 2

这不是一个提供完整解决方案的答案，因为不清楚您想要保留布局的哪些方面以及要删除哪些方面；保留所有这些可能不是您真正想要的。

关于你的第一个问题，将标题定义为

\titleline{\makebox[0pt][l]{\rule{\headwidth}{1.75em}}}

然后灰色条将延伸到边距的边框。但是，正如您在下面看到的，它与边距中的注释相冲突，因此最好将条限制在文本区域内，或者在边距中不添加注释。

关于您的第二个问题，请注意日志文件包含一个twoside=semi已被忽略的警告，因为文章类没有这样的选项。对于单面文档，就页面样式而言，只有奇数页。如果您使用该选项twoside，则有两种类型的标题，但您必须通过几何包调整边距。此外，在这种情况下，边距注释也会跳转。

在下面的代码中，我添加了这一行

\usepackage{showframe}

显示页面布局。删除它以获取最终文档。

\documentclass[11pt,a4paper]{article}

\usepackage{kantlipsum}
\usepackage{tikz}

%*****************Margins and MarginNotes******************

\usepackage[top=2.8cm, bottom=2.8cm,outer=7cm, inner=1.75cm, marginparwidth=4.25cm, marginparsep=0.75cm]{geometry}

%*******************Header & Footer***********************
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LO,RE]{\footnotesize UNIT TITLE}
\fancyfoot[LO,RE]{\thepage}
\renewcommand{\headrulewidth}{0pt}
\setlength{\headwidth}{\textwidth}
\addtolength{\headwidth}{\marginparsep}
\addtolength{\headwidth}{\marginparwidth}
\usepackage{showframe}

%***********************Document*******************
\usepackage[explicit]{titlesec}

\titleformat{\section}{\sffamily \bf \Large}{}{0em}
{%
\begingroup
  \color{gray!30}%
  \titleline{\makebox[0pt][l]{\rule{\headwidth}{1.75em}}}%
\endgroup\vskip-1.323em\hskip0.5em\sffamily \thesection\hskip1em#1
\nobreak
}

\begin{document}
\section{Section 1}
\kant[12] \marginpar{The reader should be careful to observe that the
  objects in space and time are the clue to the discovery of,
  certainly, our a priori knowledge, by means of analytic unity.}
\kant[8] \marginpar{The reader should be careful to observe that the
  objects in space and time are the clue to the discovery of,
  certainly, our a priori knowledge, by means of analytic unity.}
\kant[7]\marginpar{The reader should be careful to observe that the
  objects in space and time are the clue to the discovery of,
  certainly, our a priori knowledge, by means of analytic unity.}
\section{Section 1}
\kant[7] \marginpar{The reader should be careful to observe that the
  objects in space and time are the clue to the discovery of,
  certainly, our a priori knowledge, by means of analytic unity.}

\newpage

\end{document}