在图表列表中包含短标题和长标题

Question

我正在写一篇论文，试图将图片列表重新用作图例部分。我希望每个图片底部都有类似“图 X：标题”的内容，图片列表条目包含“图 X：标题”，后面是新行上的图例。

我几乎已经使用 tocloft 包得到了我想要的东西，如下所示：

\documentclass{article}

\usepackage[demo]{graphicx}
\usepackage{lipsum}

\usepackage[titles]{tocloft}
\addtocontents{lof}{\cftpagenumbersoff{figure}}
\renewcommand\listfigurename{Figure Legends}
\renewcommand\cftfigpresnum{\bfseries Figure }
\renewcommand\cftfigaftersnum{\bfseries :}
\renewcommand\cftfigaftersnumb{\\}
\renewcommand{\cftdotsep}{\cftnodots}
\setlength\cftbeforefigskip{12pt}

\begin{document}

\lipsum[1]
\begin{figure}[ht]
  \centering \includegraphics{image1}
  \caption[Normally a much longer legend for the first figure.]{Title for first fig}
\end{figure}
\lipsum[2]

\clearpage
\listoffigures

\end{document}

请注意，我已将图例放在“短”标题中，将标题放在“长”标题中。我还没搞清楚的一件事是如何在图表列表中同时包含“短”和“长”标题。

我考虑使用 cftXaftersnum 命令将短标题作为变量包含在内，但我不确定如何执行此操作。

更新：

答案很精彩，但我忽略了一个额外的要求：我需要 doublecaption 与子图配合使用。我有一个带有两个子图的图，计数器会双倍增加。以下是使用该解决方案的示例：

\documentclass{article}

\usepackage{amsmath}
\usepackage[demo]{graphicx}
\usepackage{lipsum}

\usepackage{subcaption}

\usepackage[titles]{tocloft}
\addtocontents{lof}{\cftpagenumbersoff{figure}}
\renewcommand\listfigurename{Figure Legends}
\renewcommand\cftfigpresnum{\bfseries Figure }
\renewcommand\cftfigaftersnum{\bfseries : }
\renewcommand{\cftdotsep}{\cftnodots}
\setlength\cftbeforefigskip{12pt}

\newlength\mylength
\settowidth\mylength{\cftfigpresnum}
\addtolength\cftfignumwidth{\mylength}

\makeatletter
\def\doublecaption{%
  \ifx\@captype\@undefined
    \@latex@error{\noexpand\caption outside float}\@ehd
    \expandafter\@gobble
  \else
    \refstepcounter\@captype
    \expandafter\@firstofone
  \fi
  {\@dblarg{\@doublecaption\@captype}}%
}
\long\def\@doublecaption#1[#2]#3{%
  \par
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #3\newline#2}}%
  \begingroup
    \@parboxrestore
    \if@minipage
      \@setminipage
    \fi
    \normalsize
    \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}
\makeatother


\begin{document}

\lipsum[1]
\begin{figure}[ht]
  \centering \includegraphics{image1}
  \doublecaption[Normally a much longer legend for the first figure.]{Title for first fig}
\end{figure}
\lipsum[2]

\begin{figure}[ht]
  \centering 
  \begin{subfigure}{0.45\textwidth}
    \includegraphics{image2}   
    \caption{Case one}
  \end{subfigure}
  \begin{subfigure}{0.45\textwidth}
    \includegraphics{image3} 
    \caption{Case two}
  \end{subfigure}
  \doublecaption[Not very long legend for fig with subfigs.]{Title for fig with subfigs}
\end{figure}
\lipsum[3]

\clearpage
\listoffigures


\end{document}

我可以在 doublecaption 定义中看到计数器增加了：

\refstepcounter\@captype

我猜想 subcaption 包必须采取某种措施来防止计数器双重递增，但我不确定如何做到这一点。我总是可以在子图之后、但在图的双重标题之前明确减少列表计数器，但我怀疑有更好的方法？

Answer 1

这是一种方法。让我们定义一个新命令\doublecaption，用于在 LoF 中实现该行为：

\makeatletter
\def\doublecaption{%
   \ifx\@captype\@undefined
     \@latex@error{\noexpand\caption outside float}\@ehd
     \expandafter\@gobble
   \else
     \refstepcounter\@captype
     \expandafter\@firstofone
   \fi
   {\@dblarg{\@doublecaption\@captype}}%
}
\long\def\@doublecaption#1[#2]#3{%
  \par
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #3\newline#2}}%
  \begingroup
    \@parboxrestore
    \if@minipage
      \@setminipage
    \fi
    \normalsize
    \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}
\makeatother

该定义取自正常定义\caption，并经过修改以满足您的需要。

在tocloft设置中，删除

\renewcommand\cftfigaftersnumb{\\}

并添加

\newlength\mylength
\settowidth\mylength{\cftfigpresnum}
\addtolength\cftfignumwidth{\mylength}

梅威瑟：

\documentclass{article}

\usepackage[demo]{graphicx}
\usepackage{lipsum}

\usepackage[titles]{tocloft}
\addtocontents{lof}{\cftpagenumbersoff{figure}}
\renewcommand\listfigurename{Figure Legends}
\renewcommand\cftfigpresnum{\bfseries Figure }
\renewcommand\cftfigaftersnum{\bfseries :}
%\renewcommand\cftfigaftersnumb{\\}
\renewcommand{\cftdotsep}{\cftnodots}
\setlength\cftbeforefigskip{12pt}

\newlength\mylength
\settowidth\mylength{\cftfigpresnum}
\addtolength\cftfignumwidth{\mylength}

\makeatletter
\def\doublecaption{%
   \ifx\@captype\@undefined
     \@latex@error{\noexpand\caption outside float}\@ehd
     \expandafter\@gobble
   \else
     \refstepcounter\@captype
     \expandafter\@firstofone
   \fi
   {\@dblarg{\@doublecaption\@captype}}%
}
\long\def\@doublecaption#1[#2]#3{%
  \par
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #3\newline#2}}%
  \begingroup
    \@parboxrestore
    \if@minipage
      \@setminipage
    \fi
    \normalsize
    \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}
\makeatother

\begin{document}

\lipsum[1]
\begin{figure}[ht]
  \centering \includegraphics{image1}
  \doublecaption[Normally a much longer legend for the first figure.]{Title for first fig}
\end{figure}
\lipsum[2]
\begin{figure}[ht]
  \centering \includegraphics{image2}
  \caption{Title for second fig}
\end{figure}

\clearpage
\listoffigures

\end{document} 

输出：

---

编辑

下次请发布包含所有相关加载包的示例...

为了使其能够正常工作subcaption，我们将定义两个命令：

1. \doublecaption，用于没有子图的图。
2. \doublesubcaption，用于带有子图的图形中。

将上面的代码以下列代码开头\makeatletter和结尾替换\makeatother为以下内容（需要包etoolbox）：

\makeatletter
\let\doublecaption\caption%
\patchcmd{\doublecaption}%
  {\@caption}%
  {\@doublecaption}%
  {}%
  {}%
\let\@doublecaption\@caption%
\patchcmd{\@doublecaption}%
  {\addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}}%
  {\addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #3\newline#2}}}%
  {}%
  {}%
\let\doublesubcaption\doublecaption%
\patchcmd{\doublesubcaption}%
  {\refstepcounter\@captype}%
  {\relax}%
  {}%
  {}%
\makeatother

梅威瑟：

\documentclass{article}

\usepackage{amsmath}
\usepackage[demo]{graphicx}
\usepackage{lipsum}
\usepackage{etoolbox}

\usepackage{subcaption}

\usepackage[titles]{tocloft}
\addtocontents{lof}{\cftpagenumbersoff{figure}}
\renewcommand\listfigurename{Figure Legends}
\renewcommand\cftfigpresnum{\bfseries Figure }
\renewcommand\cftfigaftersnum{\bfseries : }
\renewcommand{\cftdotsep}{\cftnodots}
\setlength\cftbeforefigskip{12pt}

\newlength\mylength
\settowidth\mylength{\cftfigpresnum}
\addtolength\cftfignumwidth{\mylength}

\makeatletter
\let\doublecaption\caption%
\patchcmd{\doublecaption}%
  {\@caption}%
  {\@doublecaption}%
  {}%
  {}%
\let\@doublecaption\@caption%
\patchcmd{\@doublecaption}%
  {\addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}}%
  {\addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #3\newline#2}}}%
  {}%
  {}%
\let\doublesubcaption\doublecaption%
\patchcmd{\doublesubcaption}%
  {\refstepcounter\@captype}%
  {\relax}%
  {}%
  {}%
\makeatother

\begin{document}

\lipsum[1]
\begin{figure}[ht]
  \centering \includegraphics{image1}
  \doublecaption[Normally a much longer legend for the first figure.]{Title for first fig}
\end{figure}
\lipsum[2]

\begin{figure}[ht]
  \centering
  \begin{subfigure}{0.45\textwidth}
    \includegraphics{image2}
    \caption{Case one}
  \end{subfigure}
  \begin{subfigure}{0.45\textwidth}
    \includegraphics{image3}
    \caption{Case two}
  \end{subfigure}
  \doublesubcaption[Not very long legend for fig with subfigs.]{Title for fig with subfigs}
\end{figure}
\lipsum[3]

\clearpage
\listoffigures


\end{document} 

输出：