Shrinking UML Components

Question

In order to fit an UML diagram made with TiKZ-UML (https://perso.ensta-paris.fr/~kielbasi/tikzuml/) into a beamer slide, I am currently trying to shrink the body part of the components. Unfortunately, I did not find a way to do so.

My code looks like this:

\documentclass[aspectratio=169]{beamer}
\usepackage{tikz}
\usepackage{tikz-uml}
\usepackage{parts/umldocument}
\usepackage{parts/umlmultidocument}
\usepackage{parts/umlcomponent}
\begin{document}
\begin{frame}{Example UML Components}
  \begin{tikzpicture}
\begin{umlcomponent}{A}
   \hspace{-1cm}
  \end{umlcomponent}
\umlbasiccomponent[x=3, minimum height=0pt] {B}
\umlbasiccomponent[x=6, inner ysep=0pt] {C}
\umlbasiccomponent[x=9, outer ysep=0pt] {D}
\end{tikzpicture}
\end{frame}
\end{document}

but this only creates the following output:

While setting inner ysep=0pt (from TikZ-UML: How to shrink lost space within classes?) reduces the size, it reduces the size of the overall component in a way that breaks its appearance. It is also possible to set inner ysep=-2pt, which further reduces the body, but it also reduces the header size.

Also adding

\tikzset{
  tikzuml component style/.append style={minimum height=0pt,inner ysep=0pt,text depth=2pt}
}

has no effect.

Has anybody an idea how to shrink the size of the body of an tikz-uml component, without breaking its header part?

Answer 1

I came up myself with one intermediary solution: In tikz-uml.sty, one can adjust the line 4754 from

  \node[inner sep=2ex, font=\tikzumlDefaultFont, fit = \csname tikzumlComponentFit\tikzumlComponent@parent @@\tikzumlComponent@fitname\endcsname] (\tikzumlComponent@nodeName-body) {};%

to

  \node[inner sep=0ex, font=\tikzumlDefaultFont, fit = \csname tikzumlComponentFit\tikzumlComponent@parent @@\tikzumlComponent@fitname\endcsname] (\tikzumlComponent@nodeName-body) {};%

Thereby, the spacing is reduced.

This will affect all components in the picture (and the whole presentation), therefore a solution achieving to set the parameter from the outside would be much nicer.