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如果语句与 tcolorbox 有关？

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如果语句与 tcolorbox 有关？

在此处输入图片描述

我使用了 Medina 先生提供的非常有用的代码（如下），但当示例从一页运行到另一页时，第一页底部有一行，第二页顶部有一行。有人能帮我改正吗？谢谢。

\documentclass{book}

\usepackage[many]{tcolorbox}

\usepackage{changepage}

\usepackage{amsthm}

\usepackage{amssymb}

\usepackage{lipsum}


\definecolor{framerule}{RGB}{183,41,41}

\colorlet{tryit}{green!70!black}

\newcommand\RedBox{\textcolor{framerule}{$\square$}}

\newtcolorbox{eoexample}{
  enhanced,
  breakable,
  check odd page,
  toggle left and right,
  boxrule=0pt,
  colback=white,
  arc=0pt,
  outer arc=0pt,
  top=\topsep,
  bottom=\topsep,
  left=0pt,
  right=0pt,
  boxsep=0pt,
  overlay={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east) 
      {You Try It!};
      \draw[framerule] 
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) -- 
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
      \node[inner sep=0pt]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};  
      \draw[framerule] 
        (frame.south west) -- 
        ([xshift=-3pt]box.west);
    \else
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west) 
      {You Try It!};
      \draw[framerule] 
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) -- 
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
      \node[inner sep=0pt]
        (box)
        at ([xshift=-\marginparsep-\marginparwidth]frame.south west)
        {\RedBox};  
      \draw[framerule] 
        (frame.south east) -- 
        ([xshift=3pt]box.east);
    \fi
  }
}


\newtheoremstyle{myexa}% name
  {\topsep}%Space above
  {\topsep}%Space below
  {}%Body font
  {}%Indent amount 1
  {\bfseries}% Theorem head font
  {.}%Punctuation after theorem head
  {.5em}%Space after theorem head 2
  {}%Theorem head spec

\theoremstyle{myexa}

\newtheorem{exa}{Example}

\newenvironment{example}[1][]
  {\begin{eoexample}\begin{exa}}
  {\end{exa}\end{eoexample}}  


\begin{document}

\begin{example}

\lipsum[1-6]

\end{example}

\clearpage

\begin{example}

\lipsum[1]

\end{example}

\end{document}

答案1

overlay代码不仅应用于非破损框，还应用于破损框的每个片段。您可以overlay使用选项overlay unbroken、overlay first、overlay last、 ... 来决定将代码应用于哪个片段（请参阅 4.11 覆盖部分彩色盒子请参阅文档。

\documentclass{book}
\usepackage[many]{tcolorbox}
\usepackage{changepage}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{lipsum}

\definecolor{framerule}{RGB}{183,41,41}

\colorlet{tryit}{green!70!black}

\newcommand\RedBox{\textcolor{framerule}{$\square$}}

\newtcolorbox{eoexample}{
  enhanced,
  breakable,
  check odd page,
  toggle left and right,
  boxrule=0pt,
  colback=white,
  arc=0pt,
  outer arc=0pt,
  top=\topsep,
  bottom=\topsep,
  left=0pt,
  right=0pt,
  boxsep=0pt,
  overlay unbroken ={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east) 
      {You Try It!};
      \draw[framerule] 
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) -- 
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
      \node[inner sep=0pt, anchor=east]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};  
      \draw[framerule] 
        (frame.south west) -- 
        ([xshift=-3pt]box.west);
    \else
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west) 
      {You Try It!};
      \draw[framerule] 
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) -- 
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
      \node[inner sep=0pt, anchor=east, outer sep=0pt]
        (box)
        at (frame.south east)
        {\RedBox};  
      \draw[framerule] 
        ([xshift=-\marginparsep-\marginparwidth]frame.south west) -- 
        ([xshift=-3pt]box.west);
    \fi
  },
  overlay first={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east) 
      {You Try It!};
      \draw[framerule] 
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) -- 
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
    \else
      \node[draw,tryit,fill=white]
      (tryit) 
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west) 
      {You Try It!};
      \draw[framerule] 
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) -- 
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
    \fi
  },
  overlay last={%
    \ifoddpage
      \node[inner sep=0pt]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};  
      \draw[framerule] 
        (frame.south west) -- 
        ([xshift=-3pt]box.west);
    \else
      \node[inner sep=0pt, anchor=east, outer sep=0pt]
        (box)
        at (frame.south east)
        {\RedBox};  
      \draw[framerule] 
        ([xshift=-\marginparsep-\marginparwidth]frame.south west) -- 
        ([xshift=-3pt]box.west);
    \fi
  }
}

\newtheoremstyle{myexa}% name
  {\topsep}%Space above
  {\topsep}%Space below
  {}%Body font
  {}%Indent amount 1
  {\bfseries}% Theorem head font
  {.}%Punctuation after theorem head
  {.5em}%Space after theorem head 2
  {}%Theorem head spec

\theoremstyle{myexa}

\newtheorem{exa}{Example}

\newenvironment{example}[1][]
  {\begin{eoexample}\begin{exa}}
  {\end{exa}\end{eoexample}}  

\begin{document}

\begin{example}
\lipsum[1-6]
\end{example}

\clearpage

\begin{example}
\lipsum[1]
\end{example}

\clearpage

\begin{example}
\lipsum[1]
\end{example}
\end{document}

4 页

答案2

您必须将overlay代码用作overlay unbroken。此外，当tcolorbox损坏时，还要添加此代码：

  overlay first={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east)
      {You Try It!};
      \draw[framerule]
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) --
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
    \else
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west)
      {You Try It!};
      \draw[framerule]
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) --
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
    \fi
  },
  overlay last={%
    \ifoddpage
      \node[inner sep=0pt]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};
      \draw[framerule]
        (frame.south west) --
        ([xshift=-3pt]box.west);
    \else
      \node[inner sep=0pt]
        (box)
        at ([xshift=-\marginparsep-\marginparwidth]frame.south west)
        {\RedBox};
      \draw[framerule]
        (frame.south east) --
        ([xshift=3pt]box.east);
    \fi
  }

平均能量损失

\documentclass{book}

\usepackage[many]{tcolorbox}

\usepackage{changepage}

\usepackage{amsthm}

\usepackage{amssymb}

\usepackage{lipsum}


\definecolor{framerule}{RGB}{183,41,41}

\colorlet{tryit}{green!70!black}

\newcommand\RedBox{\textcolor{framerule}{$\square$}}

\newtcolorbox{eoexample}{
  enhanced,
  breakable,
  check odd page,
  toggle left and right,
  boxrule=0pt,
  colback=white,
  arc=0pt,
  outer arc=0pt,
  top=\topsep,
  bottom=\topsep,
  left=0pt,
  right=0pt,
  boxsep=0pt,
  overlay unbroken={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east)
      {You Try It!};
      \draw[framerule]
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) --
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
      \node[inner sep=0pt]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};
      \draw[framerule]
        (frame.south west) --
        ([xshift=-3pt]box.west);
    \else
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west)
      {You Try It!};
      \draw[framerule]
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) --
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
      \node[inner sep=0pt]
        (box)
        at ([xshift=-\marginparsep-\marginparwidth]frame.south west)
        {\RedBox};
      \draw[framerule]
        (frame.south east) --
        ([xshift=3pt]box.east);
    \fi
  },
  overlay first={%
    \ifoddpage
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=\marginparsep+0.5\marginparwidth]frame.north east)
      {You Try It!};
      \draw[framerule]
        (frame.north west) -- ([xshift=-3pt]tryit.west);
      \draw[framerule]
        ([xshift=3pt]tryit.east) --
        ([xshift=\marginparsep+\marginparwidth]frame.north east);
    \else
      \node[draw,tryit,fill=white]
      (tryit)
      at ([xshift=-\marginparsep-0.5\marginparwidth]frame.north west)
      {You Try It!};
      \draw[framerule]
        (frame.north east) -- ([xshift=3pt]tryit.east);
      \draw[framerule]
        ([xshift=-3pt]tryit.west) --
        ([xshift=-\marginparsep-\marginparwidth]frame.north west);
    \fi
  },
  overlay last={%
    \ifoddpage
      \node[inner sep=0pt]
        (box)
        at ([xshift=\marginparsep+\marginparwidth]frame.south east)
        {\RedBox};
      \draw[framerule]
        (frame.south west) --
        ([xshift=-3pt]box.west);
    \else
      \node[inner sep=0pt]
        (box)
        at ([xshift=-\marginparsep-\marginparwidth]frame.south west)
        {\RedBox};
      \draw[framerule]
        (frame.south east) --
        ([xshift=3pt]box.east);
    \fi
  }
}


\newtheoremstyle{myexa}% name
  {\topsep}%Space above
  {\topsep}%Space below
  {}%Body font
  {}%Indent amount 1
  {\bfseries}% Theorem head font
  {.}%Punctuation after theorem head
  {.5em}%Space after theorem head 2
  {}%Theorem head spec

\theoremstyle{myexa}

\newtheorem{exa}{Example}

\newenvironment{example}[1][]
  {\begin{eoexample}\begin{exa}}
  {\end{exa}\end{eoexample}}


\begin{document}

\begin{example}

\lipsum[1]

\end{example}

\bigskip

\begin{example}

\lipsum[1-6]

\end{example}


\end{document}

输出：

在此处输入图片描述

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