mdframed：如何设计“锻炼”框

Question

如果我理解正确的话，这或多或少就是你所想的：

基本上所做的就是添加以下内容：

frametitle={\ifodd\value{page} \rlap{\hspace*{15pt} Example}  \else \llap{Example \hspace*{15pt}}\fi},, %This is used to overright the numbering rightafter the "Example" in the original frame title (which was above the text)
frametitlealignment={\ifodd\value{page} \raggedleft \else \raggedright\fi},

“示例”一词不再像以前一样位于标题正上方，而是位于旁边。
上面没有编号。
“Example” 一词在奇数页/偶数页上确实从左/右发生变化。
即使 mdframed 跨越分页符，“Example”一词也能正确定位。

请注意，example环境仍然使用带有文本上方编号的框架标题，这与不同style=example。可能需要进行额外的调整来更改文本颜色/字体或将其框起来等。

完整代码：

\documentclass[12pt,twoside]{book}
    \usepackage[T1]{fontenc}
    \usepackage[utf8]{inputenc}
    \usepackage{lipsum}
    \usepackage{showframe}

\usepackage[framemethod=tikz]{mdframed}
\usetikzlibrary{calc, positioning, shapes.geometric}

\tikzset{
    node distance= 0mm and 3mm,
ws/.style={align=#1,
           font=\large\bfseries\sffamily, 
           draw, thin, fill=white,
           overlay,
           }
        }

\makeatletter
\mdfdefinestyle{example}%
{%
    hidealllines=true, 
    skipabove=2\baselineskip, skipbelow=-1ex,
    innertopmargin=0pt, innerbottommargin=0pt,%
    middlelinewidth=5pt, linecolor=red,%
    fontcolor=teal, font=\small\sffamily,%
    frametitle={\ifodd\value{page} \rlap{\hspace*{15pt} Example}  \else \llap{Example \hspace*{15pt}}\fi},, %This is used to overright the numbering rightafter the "Example" in the original frame title (which was above the text)
    frametitlealignment={\ifodd\value{page} \raggedleft \else \raggedright\fi},
%
%
settings={%\global\refstepcounter{example}
        \ifodd\value{page}
    \boolfalse{mdf@leftline}
    \booltrue{mdf@rightline}
        \else
    \booltrue{mdf@leftline}
    \boolfalse{mdf@rightline}
        \fi},
    innerrightmargin=\ifodd\value{page}0.5em\else 0.0em\fi, %rightmargin=7em,%
    innerleftmargin =\ifodd\value{page}0.0em\else 0.5em\fi, %leftmargin =7em,%
singleextra={
%        \ifodd\value{page}
%\node[ws=left,below right=of P] {Example}; %These were the numbers beside them
%        \else
%\node[ws=right,below left=of O |- P]  {Example};
%        \fi
             },%
}% end of mdfdefinestyle
\makeatother

\mdtheorem[style=example,
           ]{example}{Example}[chapter]

\mdtheorem[style=exercise,
           ]{exercise}{Exercise}[chapter]

\begin{document}
\chapter{test}

\begin{mdframed}[style=example]
    This is produced by \verb+\begin{mdframed}[style=example] ... \end{mdframed}+
\end{mdframed}
xxxxxxxxx 
\begin{example}
    This is produced by \verb+\begin{example} ... \end{example}+
\end{example}

\newpage
\lipsum[2]
\begin{mdframed}[style=example]
        \lipsum[2]
\end{mdframed}

\begin{mdframed}[style=example]
\lipsum[2]
\lipsum[2]
\lipsum[2]
\lipsum[2]

\end{mdframed}

\end{document}

编辑：添加一些细节后，我修改了代码以满足：

在单词“example”后进行编号
根据偶数/奇数页向左/向右。
当框架分割到另一页时显示“继续”文本。

为此，我使用了firstextra（向所有帧添加“示例编号”）和secondextra（仅向分割帧的第一部分添加“继续”）。请阅读第 7 节以了解更多Hooks and Bools信息mdframed如果您希望在分割帧的最后一部分添加“继续”，请检查这个问题。

\documentclass[12pt,twoside]{book}
    \usepackage[T1]{fontenc}
    \usepackage[utf8]{inputenc}
    \usepackage{lipsum}
    \usepackage{showframe}
\usepackage[framemethod=tikz]{mdframed}
\usetikzlibrary{calc, positioning, shapes.geometric}

\tikzset{
    node distance= 0mm and 3mm,
ws/.style={align=#1,
           font=\large\bfseries\sffamily, 
           draw, thin, fill=white,
           overlay,
           }
        }
%\newcounter{example} maybe this is unnecessary
\makeatletter
\mdfdefinestyle{example}%
{%
    hidealllines=true,    
    skipabove=2\baselineskip, skipbelow=-1ex,
    innertopmargin=0pt, innerbottommargin=0pt,%
    middlelinewidth=5pt, linecolor=red,%
    fontcolor=teal, font=\small\sffamily,%
%
settings={\global\refstepcounter{example} %this was commented, it is now active
        \ifodd\value{page}
    \boolfalse{mdf@leftline}
    \booltrue{mdf@rightline}
        \else
    \booltrue{mdf@leftline}
    \boolfalse{mdf@rightline}
        \fi},
    innerrightmargin=\ifodd\value{page}0.5em\else 0.0em\fi, %rightmargin=7em,%
    innerleftmargin =\ifodd\value{page}0.0em\else 0.5em\fi, %leftmargin =7em,%
    %
singleextra={
    \ifodd\value{page}
    \node[ws=left,draw=none,below right=of P] { Example \theexample };
            \else
    \node[ws=right,draw=none,below left=of O |- P]  {Example \theexample };
            \fi
                 },%
firstextra={
\ifodd\value{page}
\node[ws=left,draw=none,below right=of P] { Example \theexample };
\node[ws=left,yshift=-2em,below right=of P] { continue \ldots };
        \else
\node[ws=right,draw=none,below left=of O |- P]  {Example \theexample };
\node[ws=right,draw=none,yshift=-2em,below left=of O |- P]  {continue \ldots };
        \fi
             },%
}% end of mdfdefinestyle
\makeatother

\mdtheorem[style=example,
           ]{example}{Example}[chapter]

\mdtheorem[style=exercise,
           ]{exercise}{Exercise}[chapter]

\begin{document}
\chapter{test}

\begin{mdframed}[style=example]
    This is produced by \verb+\begin{mdframed}[style=example] \end{mdframed}+
\end{mdframed}
xxxxxxxxx 
\begin{mdframed}[style=example]
    This is produced by \verb+\begin{mdframed}[style=example] \end{mdframed}+
\end{mdframed}
\newpage
\lipsum[2]
\begin{mdframed}[style=example]
        \lipsum[2]
\end{mdframed}

\begin{mdframed}[style=example]
\lipsum[2]
\lipsum[2]
\lipsum[2]
\lipsum[2]
\end{mdframed}
\end{document}

Answer 1