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梯形尺寸问题 Tikz

tag-icon • tag-icon tikz-pgf tikz-styles tikz-shape tikz-node
梯形尺寸问题 Tikz

我有一个生成流程图的代码。它并不完整，除了一切之外，它只需要箭头。我遇到的问题是流程节点、梯形，尽管我预先定义了它们，但它们的大小却不一样。

代码：

\documentclass{article}

%----------------------------------------------------------------------------------------
%   PACKAGES
%----------------------------------------------------------------------------------------
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric, arrows}
\usetikzlibrary{positioning}

\tikzstyle{startstop} =   [rectangle, text centered, rounded corners, minimum width=3cm, minimum height=1cm, draw=black, fill=red!30]
\tikzstyle{io} =          [trapezium, trapezium left angle=70, trapezium right angle=-70,text centered,text width = 2cm,minimum height=1cm, minimum width=2cm, draw=black, fill=blue!30]
\tikzstyle{process} =     [rectangle, text centered, minimum width=3cm, minimum height=1cm, draw=black, fill=orange!30]
\tikzstyle{decision} =    [diamond, text badly centered, text width=4.5em, draw=black, fill=green!30]
\tikzstyle{arrow} =       [thick,->,>=stealth]

% Does Node distance by sides instead of centers.
\tikzstyle{my below of} = [below=of #1.south]
\tikzstyle{my right of} = [right=of #1.east]
\tikzstyle{my left of} = [left=of #1.west]
\tikzstyle{my above of} = [above=of #1.north]

%----------------------------------------------------------------------------------------
%   DOCUMENT INFO
%----------------------------------------------------------------------------------------

\begin{document}

\begin{tikzpicture}[node distance=0.1cm,auto]
\node (Start) [startstop] {Program Startup};
\node (UsrStat) [decision, my below of=Start] {New or Returning User?};
\node (CrtUsr) [process, my right of=UsrStat] {Create User};
\node (LogCred) [io, my below of=UsrStat] {Login Credentials};
\node (ValCred) [process, my below of=LogCred] {Validate Credentials};
\node (ValRes) [decision, my below of=ValCred] {Valid or Invalid Credentials?};
\node (Login) [process, my below of=ValRes] {Login};
\node (ConUI) [process, my below of=Login] {Contact UI};
\node (Com) [io, my below of=ConUI, text width = 2.1cm] {Command};
\node (ExDec) [decision, my below of=Com] {Exit Command?};
\node (ComPros) [process, my right of=Com] {Command Process};
\node (Exit) [startstop, my below of=ExDec] {Exit Program};

\end{tikzpicture}

\end{document}

但当我运行它时，我得到以下结果命令大于登录凭据我尝试过更改文本宽度、最小高度和宽度，但似乎无法正确设置。我希望它们的最小宽度与其他宽度一样为 2cm。

答案1

乍一看，这看起来像是一个错误，但是阅读文档时，敲击评论表明，在这种情况下trapezium stretches=true应该将选项添加到节点样式定义中：

在此处输入图片描述

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{arrows, positioning, shapes.geometric, }

\tikzset{flowchart/.style = {
     base/.style = {draw=black, 
                    inner sep=1mm, outer sep=0mm,
                    text width=3cm, minimum height=1cm,
                    align=flush center},
startstop/.style = {base, fill=red!30},
  process/.style = {base, fill=orange!30},
 decision/.style = {base, diamond, aspect=1.2, fill=green!30},
       io/.style = {base, trapezium,
                    trapezium left angle=70, trapezium right angle=-70,
                    trapezium stretches=true, %%%% <-- added
                    fill=blue!30},
     arrow/.style = {thick, -stealth}
                    }}

\begin{document}
\begin{tikzpicture}[flowchart,
    node distance=0.5cm, auto
                    ]
\node (n1) [io] {Login Credentials};
\node (n2) [io, below=of n1]        {Command};
\node (n3) [io, below=of n2]        {Command Command Command};
\node (n4) [process, below=of n3]   {Validate Credentials};
%
\draw[dashed]
    (n4.north west) -- ++ (0,5)
    (n4.north east) -- ++ (0,5);
\end{tikzpicture}
\end{document}

无关： 上述 MWE 与您的 MWE 相比有以下变化：

  • 相反\tikzstyle，这被认为是过时\tikzset的
  • \tikzset包含流程图中使用的节点定义的 被命名为“流程图”（如果您不喜欢，只需删除 的这一部分\tikzset）。因此，tikzpicture带有流程图的 s 必须用其名称调用此设置（请参阅上面的 MWE）
  • 定位时（直接）使用positioning库中确定的语法
  • 定义是通用base样式，然后在所有其他节点的样式中使用

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