图形和标题在 itemize 环境中的位置

Question 1

在列表环境中提供adjustbox了许多功能，例如itemize。

传递以下键可得到adjustbox您所描述的内容：

位于线宽中央的图形：center=\linewidth
前后间距（bigskip替换）：margin=0ex 2ex 0ex 2ex
将其标识tikzpicture为图形，但不要使其浮动：nofloat=figure
提供图形标题：caption=This figure does not float. It is placed between the two items
添加装饰框：cfbox=blue 1pt

为了回答 OP 的问题，提供了第二个例子。

被tikzpicture视为浮动图形：figure=htb，其中 htb 是图形的放置选项。
标题标记为：\label{fig:MyFigure}。
标题移至图的顶部：captionabove={This figure floats. Its placement is determined by page content and thefigure=htb settings}。
添加了包以在文本中的位置（）和图形标题hyperref之间创建链接。\ref{fig:MyFigure}

我遇到了一个问题，第二个示例中的标题不再限制在条目的行宽内。这是更改nofloat=figure为的结果figure=htp。我只能通过一个 hack 来解决这个问题，即：

已加载enumitem并caption打包
添加\captionsetup{margin=0.5cm}
添加[leftmargin=*]

我确信这可以得到改进，因为我只是不断尝试，直到成功为止。

以下是每个示例的结果。请注意，第二个示例仍将图形放置在两个项目之间，因为它h被用作放置选项，并且它与页面内容相适应。

尝试改为\Blindtext[1][2]。\Blindtext[3][2]页面上没有足够的空间放置图形，因此图形会浮动到下一页，而文本仍保留在第一页。

这是每个示例的输出：

这是代码：

\documentclass[a4paper,11pt]{article}
\usepackage{tikz}
\usepackage[english]{babel}         % for pangram from blindtext package
\usepackage[pangram]{blindtext}
\usepackage{adjustbox}
\usepackage{caption}
\usepackage{enumitem}
\usepackage{hyperref}

\begin{document}

\begin{itemize}%[leftmargin=*] % Dont use leftmargin setting. It upsets the caption alignment
    \item[***] \textbf{Example 1}
    \item \Blindtext[1][2]

        \begin{adjustbox}{
                cfbox=blue 1pt,     % draw a box around the picture
                center=\linewidth,  % center the picture in the with of the line
                margin=0ex 2ex 0ex 2ex, % add some space above and below the figure
                caption=This figure does not float. It is placed between the two items.,  % give the figure caption
                nofloat=figure     % this is a non-floating figure          
            }
            \begin{tikzpicture}
            \clip(-5.686675053232457,-3.16893917565149) rectangle (5.579414724686105,0.6921754200738994);
            \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105]plot(\x,{(--4.514220105043796-1.8219356725415592*\x)/1.894960446786564});
            \draw [line width=1.2pt,dash pattern=on 4pt off 4pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--1.6188066144426525-1.0979714604086213*\x)/-0.3751399196759637});
            \draw [line width=1.2pt,dash pattern=on 4pt off 4pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--11.463481791986391--1.2426776436313691*\x)/-5.670646727250561});
            \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--0.4039090361160175--0.6586822831185679*\x)/-0.27723191082856635});
            \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(-2.9955647165449215--0.8716146065783191*\x)/4.89799733746727});    
            \end{tikzpicture}
        \end{adjustbox}
%
    \item \Blindtext[1][2]
\end{itemize}

% A new example added with the figure as a float, a label for the figire and a reference to the figure

\begin{itemize}[leftmargin=*] %Add left margin setting to get correct caption alignment
    \item[***] \textbf{Example 2}
    \item \Blindtext[1][2]
    \item This is a reference to Figure \ref{fig:MyFigure}.
    \captionsetup{margin=0.5cm}
    \begin{adjustbox}{
            cfbox=green 1pt,     % draw a box around the picture
            center=\linewidth,  % center the picture in the with of the line
            margin=0ex 2ex 0ex 2ex, % add some space above and below the figure
            captionabove={This figure floats. Its placement is determined by page content and the figure=htb settings.} \label{fig:MyFigure},  % give the figure caption and a label to link to
            figure=htb      % this is a floating figure with placement options                     
        }
        \begin{tikzpicture}
        \clip(-5.686675053232457,-3.16893917565149) rectangle (5.579414724686105,0.6921754200738994);
        \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105]plot(\x,{(--4.514220105043796-1.8219356725415592*\x)/1.894960446786564});
        \draw [line width=1.2pt,dash pattern=on 4pt off 4pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--1.6188066144426525-1.0979714604086213*\x)/-0.3751399196759637});
        \draw [line width=1.2pt,dash pattern=on 4pt off 4pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--11.463481791986391--1.2426776436313691*\x)/-5.670646727250561});
        \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(--0.4039090361160175--0.6586822831185679*\x)/-0.27723191082856635});
        \draw [line width=1.2pt,domain=-5.686675053232457:9.579414724686105] plot(\x,{(-2.9955647165449215--0.8716146065783191*\x)/4.89799733746727});    
        \end{tikzpicture}
    \end{adjustbox}
    %
    \item \Blindtext[1][2]
\end{itemize}

\end{document}

Answer