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如何更改 tikz 中边缘标签的字体大小？

tag-icon • tag-icon tikz-pgf fontsize
如何更改 tikz 中边缘标签的字体大小？

我得到了一个小的自动机 tikzpicture，但它越复杂，就越难读。所以我想调整边缘标签的字体大小，但我就是不知道该怎么做。尝试查看 tikzpgf 手册以及此处，但我只找到了节点的 ，而没有找到路径命令中的边缘标签的scale。fontsize

例如我想让这两条路径中的文本变小一些：

\usepackage{pgfplots}
\usetikzlibrary{automata,positioning,fit,shapes.geometric,backgrounds}

\begin{figure}
\begin{tikzpicture}[node distance=1.5cm]
\node  [state, initial] (Neutral)       {Neutral};   
\node[state]
    (UI Popup)
    [right=of Neutral]
    {Popped UI};

\node[state]
    (Sine)
    [above right=of UI Popup]
    [fill=gray]
    {\includegraphics[width=1.8cm]{sinecurve2}};

\node[state, circle split]
    (Digital_Off)
    [scale=0.75]
    [below right=of UI Popup]
    {Digital [Off] \nodepart{lower} \includegraphics[width=0.5cm]{pin_off}};

\node[state, circle split]
    (Digital_On)
    [scale=0.75]
    [right=of Digital_Off]
    {Digital [On] \nodepart{lower} \includegraphics[width=0.5cm]{pin_on}};

    \begin{scope}[on background layer]
\node[fit=(Digital_Off) (Digital_On), rectangle, rounded corners, draw=red, label=above:Digital state] (digital) {};
\end{scope}

\path[->] [line width=0.3mm]
            (Neutral)       edge [scale=0.2] node [above]      {Tap}                    (UI Popup)
            (UI Popup)      edge [bend left] node [above left]  {Tap and select analog} (Sine)
                            edge [bend right] node [below left] {Tap and select digital}    (Digital_Off)
            (Digital_Off)   edge [bend left] node [above]      {Tap}                    (Digital_On)
            (Digital_On)    edge [bend left] node [below]      {Tap}                    (Digital_Off)
            %(digital)      edge [bend left] node [above]      {Tap}                    (Sine)    
            (digital)       edge [bend right] node [above]     {Long click}             (UI Popup)
            (Sine)          edge [bend left]  node [below]     {Long click}             (UI Popup)
                        ;                    
\end{tikzpicture}
\caption{Input pin behavior}
\end{figure}

编辑：

这个 tikzpicture 位于一个以 \chapter{...} 开头的单独文件中，main.tex 文件如下所示：

%!TEX root = ./main.tex

\documentclass[11pt, a4paper, titlepage]{book}
\include{i10preamble}
\begin{document}
\sloppy
\include{indexAddOn}

\frontmatter

\begin{titlepage}
\AddToShipoutPicture*{
\put(0,0){
\includegraphics[width=\paperwidth]{titlepage_Master_CID}}}
\strut
\end{titlepage}

% Lots of other stuff inside

\end{document}

在此处输入图片描述

答案1

同时我等待你的完整mwe，我在我的tikz测试平台上测试你的图像代码，因此我的序言可能与你在文档中使用的不同...

我将按照以下方式为您的图像编写代码：

\documentclass[tikz, margin=3mm]{standalone}
\usetikzlibrary{automata,
                fit,
                positioning,
                quotes,
                shapes.multipart
                }
\usepackage{graphicx}
\newcommand\greencirc{\tikz\node[circle, draw, thick, fill=green,
                                 minimum size=3ex, node contents={}];}
\newcommand\whitecirc{\tikz\node[circle, draw, thick, fill=white,
                                 minimum size=3ex, node contents={}];}

\begin{document}
    \begin{tikzpicture}[
node distance = 8mm and 12mm,
    MP/.style = {circle split, draw, inner sep=1pt,
                 align=center, font=\scriptsize},
state/.append style = {fill=#1, align=center},
state/.default = white,
every edge quotes/.append style={font=\scriptsize, align=center, auto}% style for edge labels
    ]
\node (Neutral)     [state, initial]            {Neutral};
\node (UI Popup)    [state, right=of Neutral]   {Popped\\ UI};
\node (Sine)        [state=gray!50, above right=of UI Popup]
    {sinecurve2};%{sinecurve2}};
\node (Digital Off) [MP, below right=of UI Popup]
        {Digital\\ {[Off]} \nodepart{lower} \\ \whitecirc};

\node (Digital On) [MP, right=of Digital Off]
        {Digital\\ {[On]} \nodepart{lower} \\  \greencirc};

%\scoped[on background layer]
\node  (digital) [rounded corners, draw=red, label=75:Digital state,
                  fit=(Digital Off) (Digital On)] {};
\path[thick, ->]
    (Neutral)       edge ["Tap"]                                    (UI Popup)
    (UI Popup)      edge [bend  left,"Tap and\\ select analog"]     (Sine)
                    edge [bend right,"Tap and\\ select digital" ']  (Digital Off)
    (Digital Off)   edge [bend left,"Tap" ']                        (Digital On)
    (Digital On)    edge [bend left,"Tap" ']                        (Digital Off)
    (digital)       edge [bend right, "Long\\ click" ']               (UI Popup)
    (Sine)          edge [bend left, "Long\\ click" ']                (UI Popup)
    ;
    \end{tikzpicture}
\end{document}

如您所见，所有字体大小均在节点/边引号样式中定义。还用新命令替换了两个图像greencirc。whitecirc类似地，可以在灰色节点中对正弦方式进行操作。

在此处输入图片描述

答案2

显然scale确实有效，但我只是在参数的错误部分尝试了它。

我尝试的是

    (UI Popup)      edge [scale=0.5] [bend left] node [above left]  {Tap and select analog} (Sine)

但正确的是

    (UI Popup)      edge [bend left] node [scale=0.5] [above left]  {Tap and select analog} (Sine)

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