如何在中断行中嵌入页眉中添加图形？

Question

如何在页眉中添加如下所示的图形，其中页眉底部的线从左侧开始，长 1 厘米，图形之间有 3 厘米的间隙，并且线继续延伸剩余长度：

- 数字 - - - - - - - - -

我的 .cls 中有一行使用此代码运行：

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{test-report}
\newif\if@print
\LoadClass[10pt]{book}
\RequirePackage{fancyhdr}
\RequirePackage[pdftex]{geometry}
\RequirePackage{xcolor}
\def\titlefont{\rmfamily}
\def\titlestyle{\titlefont\titleshape\bfseries}
\colorlet{title}{black}

%% Fancy style for the main matter.
\fancypagestyle{mainmatter}{%
    \fancyhf{}
    %% Page numbers on the top left and top right.
    \fancyhead[LE,RO]{\titlefont\thepage}
}

%% The mainmatter style is default for normal pages.
\pagestyle{mainmatter}

%% Print the current chapter and section at the top of the page in cyan.
\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \color{title}#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \color{title}#1}}

%% The setheader command can be used to print the title of unnumbered chapters
%% in the page header.
\newcommand*\setheader[1]{\markboth{\color{title}#1}{\color{title}#1}}

%% Change the headrule command (from fancyhdr.sty) to draw the line below the
%% header in the title color.
\renewcommand*\headrule{%
    \if@fancyplain%
        \let\headrulewidth\plainheadrulewidth%
    \fi%
    {\color{title}\hrule\@height\headrulewidth\@width\headwidth}%
    \vskip-\headrulewidth%
}

我的文本文件：

\documentclass{test-report}

\begin{document}

\mainmatter

some text

\end{document}

ps. 我使用的是 sharelatex

Answer 1

也许以下内容会有所帮助

\documentclass[10pt]{book}
\usepackage{fancyhdr}
\usepackage{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\def\titlefont{\rmfamily}
\colorlet{title}{black}

%% Fancy style for the main matter.
\fancypagestyle{mainmatter}{%
    \fancyhf{}
    %% Page numbers on the top left and top right.
    \fancyhead[LE,RO]{\titlefont\thepage}
    %% Chapter name on the left (even) page.
    \fancyhead[RE]{\titlefont\nouppercase{\leftmark}}
    %% Section name on the right (odd) page.
    \fancyhead[LO]{\titlefont\nouppercase{\rightmark}}
}

%% The mainmatter style is default for normal pages.
\pagestyle{mainmatter}

%% Print the current chapter and section at the top of the page in cyan.
\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \color{title}#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \color{title}#1}}

%% The setheader command can be used to print the title of unnumbered chapters
%% in the page header.
\newcommand*\setheader[1]{\markboth{\color{title}#1}{\color{title}#1}}

%% Change the headrule command (from fancyhdr.sty) to draw the line below the
%% header in the title color.
\makeatletter
\renewcommand*\headrule{%
    \if@fancyplain%
        \let\headrulewidth\plainheadrulewidth%
    \fi%
    {\color{title}%
      \rule{1cm}{\headrulewidth}%
      \raisebox{-\baselineskip}[0pt][0pt]{%
        \parbox[b]{3cm}{\centering%
          \ifdim\headrulewidth>0pt\includegraphics[height=2\baselineskip]{example-image}\fi
      }}%
      \rule{\dimexpr\textwidth-4cm\relax}{\headrulewidth}%
    }%
    \vskip-\headrulewidth%
}
\makeatother

%% enlarge headsep and headheight
\geometry{headsep=2\baselineskip,headheight=20.5pt}

\begin{document}
\mainmatter
\noindent some text
\end{document}

结果：

或者

\documentclass[10pt]{book}
\usepackage{fancyhdr}
\usepackage{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\def\titlefont{\rmfamily}
\colorlet{title}{black}

%% Fancy style for the main matter.
\fancypagestyle{mainmatter}{%
    \fancyhf{}
    %% Page numbers on the top left and top right.
    \fancyhead[LE,RO]{\titlefont\thepage}
    %% Chapter name on the left (even) page.
    \fancyhead[RE]{\titlefont\nouppercase{\leftmark}}
    %% Section name on the right (odd) page.
    \fancyhead[LO]{\titlefont\nouppercase{\rightmark}}
}

%% The mainmatter style is default for normal pages.
\pagestyle{mainmatter}

%% Print the current chapter and section at the top of the page in cyan.
\renewcommand*\chaptermark[1]{\markboth{\thechapter.\ \color{title}#1}{}}
\renewcommand*\sectionmark[1]{\markright{\thesection.\ \color{title}#1}}

%% The setheader command can be used to print the title of unnumbered chapters
%% in the page header.
\newcommand*\setheader[1]{\markboth{\color{title}#1}{\color{title}#1}}

%% Change the headrule command (from fancyhdr.sty) to draw the line below the
%% header in the title color.
\makeatletter
\renewcommand*\headrule{%
    \if@fancyplain%
        \let\headrulewidth\plainheadrulewidth%
    \fi%
    {\color{title}%
      \rule{1cm}{\headrulewidth}%
      \smash{%
        \parbox[b]{3cm}{\centering%
          \ifdim\headrulewidth>0pt\includegraphics[height=2\baselineskip]{example-image}\fi
      }%
      \rule{\dimexpr\textwidth-4cm\relax}{\headrulewidth}%
    }}%
    \vskip-\headrulewidth%
}
\makeatother

%% enlarge headheight
\geometry{headheight=20pt}

\begin{document}
\mainmatter
\noindent some text
\end{document}