How to draw multiple fillable PDF forms inside a rectangle using `tikzpicture` environment

Question

I would like to draw two differents pictures. One of them consists of two rectangles, one with text and the other (below the first) with fillable text, as shown below:

Here is text of this length is just normal text, and the fillable text consists in three TextField of the hyperref package separated by a /, like the date DD/MM/YYYY.

The other picture is very similar but the only difference is that the fillable text is deleted:

However, I am not able to produce the combination of the two rectangles in one (so that the bottom one is centered) using tikzset.

MWE:

\documentclass{article}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage{hyperref}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\usetikzlibrary{shapes.multipart}
\tikzset{pics/fillable subject/.style n args={1}{code={\node[draw,text height=1.5ex,text width=5em,rounded corners] (#1) {\TextField[name=day,width=1em,charsize=7pt,maxlen=2,bordercolor={1 1 1}]~/~\TextField[name=month,width=1em,charsize=7pt,maxlen=2,bordercolor={1 1 1}]~/~\TextField[name=year,width=2em,charsize=7pt,maxlen=4,bordercolor={1 1 1}]\\};}}}

\begin{document}

\begin{Form}
    \begin{tikzpicture}
        \pic at (0,0) {fillable subject={Geography}};
    \end{tikzpicture}
\end{Form}

\end{document}

Requirements

• There are two pictures: fillable subject and non-fillable subject.
• fillable subject must have one argument: the name of the subject (Math, History, etc.). non-fillable subject must have no arguments.
• Each picture has a specified size, it does not change depending on the length of the text.
• There are a lot of them in one tikzpicture environment, so the code should be as handle as possible, since we can add several pictures one next to the other.
• We must be able to create an arrow between two pictures that connect the upper rectangles.

Note

The background color of the TextField command does not matter.

This is what I want:

Thanks!!

Answer 1

This is a refined proposal.

\documentclass{article}
\usepackage[showframe,margin=1in]{geometry}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage{hyperref}
\usepackage{tikz}
%\usetikzlibrary{calc}
\tikzset{text field/.style={text height=1.5ex,align=center,rounded corners},
title field/.style={text height=2ex,text depth=0.3em,anchor=south,text
width=11em,align=center,font=\sffamily},
pics/fillable subject/.style={code={%
\node[text field] (-TF) 
{\hspace*{-0.5em}\TextField[name=#1-day,width=1em,charsize=7pt,maxlen=2,bordercolor={1 1
1}]~~/\hspace*{-0.15em}\TextField[name=#1-month,width=1em,charsize=7pt,maxlen=2,bordercolor={1 1
1}]~~/\hspace*{-0em}\TextField[name=#1-year,width=2em,charsize=7pt,maxlen=4,bordercolor={1 1
1}]{}~};
%\path let \p1=($(-TF.east)-(-TF.west)$) in \pgfextra{\typeout{\x1}};
\node[title field] (-Title) 
at ([yshift=0.4em]-TF.north) {#1};
\draw[rounded corners] (-TF.south west) |- (-Title.south west)
|- (-Title.north east) -- (-Title.south east) -| (-TF.south east)
 -- cycle;
\draw ([xshift=4pt]-Title.south west) -- ([xshift=-4pt]-Title.south east);
 }},
pics/nonfillable subject/.style={code={%
\node[text field] (-TF) 
{\hspace{1.55em}~/~\hspace{1.6em}~/~\hspace{1.55em}{}};
\node[title field] (-Title) 
at ([yshift=0.4em]-TF.north) {#1};
%\path let \p1=($(-TF.east)-(-TF.west)$) in \pgfextra{\typeout{\x1}};
\draw[rounded corners] (-TF.south west) |- (-Title.south west)
|- (-Title.north east) -- (-Title.south east) -| (-TF.south east)
 -- cycle;
\draw ([xshift=4pt]-Title.south west) -- ([xshift=-4pt]-Title.south east);
 }}, 
 }

\begin{document}

\begin{Form}
    \begin{tikzpicture}
        \path (0,0) pic (Geo)  {fillable subject={Geography}}
        (5,0) pic (Whatever)  {nonfillable subject={Whatever}}
        (10,0) pic[draw=red] (Math)  {fillable subject={Math}};
        \draw[-latex] (Geo-Title) -- (Whatever-Title);
        \draw[-latex] (Whatever-Title) -- (Math-Title);
    \end{tikzpicture}
\end{Form}

\end{document}

I also loaded the geometry package to increase the width of the page, showframe is only to show that the figure fits.