tikz pgf-umlsd 图中边距

Question 1

基本问题是软件包代码没有注意避免引入虚假空格。这是一个错误，应该修复。

通常情况下，我建议修补相关命令。但是，我不确定如何修补类似

\newenvironment{sequencediagram}{

这样我们得到

\newenvironment{sequencediagram}{%

无论如何，*很多需要补丁数。%定义的前 5 行中至少需要5 个补丁sequencediagram。

可以简单地用新的定义替换旧定义。下面修复了间距问题（并更新了 TikZ 3.0 的语法）：

\renewenvironment{sequencediagram}{%
  % declare layers
  \pgfdeclarelayer{umlsd@background}%
  \pgfdeclarelayer{umlsd@threadlayer}%
  \pgfsetlayers{umlsd@background,umlsd@threadlayer,main}%
%
  \begin{tikzpicture}
    [
      sequence/.style={coordinate},
      inststyle/.style={rectangle, draw, anchor=west, minimum height=0.8cm, minimum width=1.6cm, fill=white, drop shadow={opacity=1,fill=black}},
      blockstyle/.style={anchor=north west},
      blockcommentstyle/.style={anchor=north west, font=\small},
      dot/.style={inner sep=0pt,fill=black,circle,minimum size=0.2pt},
    ]
    \setlength{\unitlength}{1cm}
    \ifpgfumlsdroundedcorners
    \tikzset{%
      inststyle/.style+={rounded corners=3mm}}
    \fi
    \global\def\unitfactor{0.6}
    \global\def\threadbias{center}
    % reset counters
    \setcounter{preinst}{0}
    \setcounter{instnum}{0}
    \setcounter{threadnum}{0}
    \setcounter{seqlevel}{0}
    \setcounter{callevel}{0}
    \setcounter{callselflevel}{0}
    \setcounter{blocklevel}{0}

    % origin
    \node[coordinate] (inst0) {};
}{
  \begin{pgfonlayer}{umlsd@background}
    \ifnum\c@instnum > 0
    \foreach \t [evaluate=\t] in {1,...,\theinstnum}{
      \draw[dotted] (inst\t) -- ++(0,-\theseqlevel*\unitfactor-2.2*\unitfactor);
    }
    \fi
    \ifnum\c@threadnum > 0
    \foreach \t [evaluate=\t] in {1,...,\thethreadnum}{
      \path (thread\t)+(0,-\theseqlevel*\unitfactor-0.1*\unitfactor) node (threadend) {};
      \tikzstyle{threadstyle}+=[threadcolor\t]
      \drawthread{thread\t}{threadend}
    }
    \fi
  \end{pgfonlayer}
\end{tikzpicture}}

这很有帮助，但并不能完全消除问题，因为环境中的命令可能也会引入空格sequencediagram。如果我使用一个空环境，我现在会得到一个框，就像我刚刚创建一个\fbox{}没有内容的空框一样大。但是一旦我替换内容，我又会得到一些虚假的空间：

要解决这个问题，您需要修补或重新定义所有相关的宏以删除空格。

\documentclass{article}
\usepackage{tikz,pgf-umlsd}
\usepackage{kantlipsum}
\makeatletter
\renewenvironment{sequencediagram}{%
  % declare layers
  \pgfdeclarelayer{umlsd@background}%
  \pgfdeclarelayer{umlsd@threadlayer}%
  \pgfsetlayers{umlsd@background,umlsd@threadlayer,main}%
%
  \begin{tikzpicture}
    [
      sequence/.style={coordinate},
      inststyle/.style={rectangle, draw, anchor=west, minimum height=0.8cm, minimum width=1.6cm, fill=white, drop shadow={opacity=1,fill=black}},
      blockstyle/.style={anchor=north west},
      blockcommentstyle/.style={anchor=north west, font=\small},
      dot/.style={inner sep=0pt,fill=black,circle,minimum size=0.2pt},
    ]
    \setlength{\unitlength}{1cm}
    \ifpgfumlsdroundedcorners
    \tikzset{%
      inststyle/.style+={rounded corners=3mm}}
    \fi
    \global\def\unitfactor{0.6}
    \global\def\threadbias{center}
    % reset counters
    \setcounter{preinst}{0}
    \setcounter{instnum}{0}
    \setcounter{threadnum}{0}
    \setcounter{seqlevel}{0}
    \setcounter{callevel}{0}
    \setcounter{callselflevel}{0}
    \setcounter{blocklevel}{0}

    % origin
    \node[coordinate] (inst0) {};
}{
  \begin{pgfonlayer}{umlsd@background}
    \ifnum\c@instnum > 0
    \foreach \t [evaluate=\t] in {1,...,\theinstnum}{
      \draw[dotted] (inst\t) -- ++(0,-\theseqlevel*\unitfactor-2.2*\unitfactor);
    }
    \fi
    \ifnum\c@threadnum > 0
    \foreach \t [evaluate=\t] in {1,...,\thethreadnum}{
      \path (thread\t)+(0,-\theseqlevel*\unitfactor-0.1*\unitfactor) node (threadend) {};
      \tikzstyle{threadstyle}+=[threadcolor\t]
      \drawthread{thread\t}{threadend}
    }
    \fi
  \end{pgfonlayer}
\end{tikzpicture}}
\makeatother
\begin{document}
\kant[1]

\noindent%
\fbox{%
\begin{sequencediagram}%
  \newthread{client}{Some Client}
  \newinst{server}{Some Server}
  \newinst{third}{Some Third Service}
  \begin{call}{client}{do}{server}{}
  \end{call}
  \begin{messcall}{server}{notify}{third}
  \end{messcall}
\end{sequencediagram}%
}

\kant[2]
\end{document}

Answer