[Tex/LaTex] Adjust vertical height of beamer box title bar

beamerbeamerposterblock

I am trying to make a beamer poster. I'm working on customizing the headers for the "block" environment. So far, I'm having trouble in that there is not enough vertical padding between the title text and the edge of the block title bar.

enter image description here

I am customizing the block title font, but the problem appears when I try to get rounded box corners. If I remove the following line, the boxes have sufficient padding:

% Use rounded blocks
\setbeamertemplate{blocks}[rounded]

It would be best if I could manually specify a height for the beamer box title bars. In addition to this vertical padding issue, the bars look strange side-by-side because they are all different heights.

Working example

Document

\documentclass[]{beamer}
\usepackage[orientation=landscape,size=custom,width=165,height=105,scale=1.47,debug]{beamerposter}
\usetheme{Modified}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\title{Title}
\author[]{Authors}
\institute[]{Institute}
\begin{document}

% beamer has a problem filling vertical space in columns
% have to manually specify column heights 
% 
\newlength{\colheightb}
\setlength{\colheightb}{0.85\paperheight}

\begin{frame}{}
\begin{columns}[T, totalwidth=\textwidth]
\begin{column}{.225\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section}
    \end{block} 
    \vfill
}
\end{column}

\begin{column}{.225\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section p}
    \end{block}
    \vfill
}
\end{column}

\begin{column}{.265\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section y}
    \end{block}
    \vfill
}
\end{column}

\begin{column}{.275\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section 4}
    \end{block}
    \vfill
}
\end{column}

\end{columns}
\end{frame}
\end{document}

Style

\usepackage{grffile}
\usepackage{calc}
\usepackage{tcolorbox}  
\usepackage{lmodern}

\DeclareOptionBeamer{compress}{\beamer@compresstrue}
\ProcessOptionsBeamer
\mode<presentation>
\setbeamercolor{section in head/foot}{use=structure,bg=structure.fg!25!bg}
\useoutertheme[subsection=false]{miniframes}
\setbeamertemplate{frametitle}[default][center]
\AtBeginDocument{%
  {
    \usebeamercolor{section in head/foot}
  } 
  \pgfdeclareverticalshading{beamer@headfade}{\paperwidth}
  {%
    color(0cm)=(bg);
    color(1.25cm)=(section in head/foot.bg)%
  }
  \setbeamercolor{section in head/foot}{bg=}
}
\beamertemplatedotitem
\mode
<all>

\setbeamercolor{headline}{bg=black,fg=white}
\setbeamercolor{title in headline}{bg=black,fg=white}
\setbeamercolor{author in headline}{bg=black,fg=white}
\setbeamercolor{institute in headline}{bg=black,fg=white}
\setbeamercolor{date in headline}{bg=black,fg=white}
\setbeamercolor{block body}{bg=white,fg=black}
\setbeamercolor{block title}{bg=black,fg=white}

\setbeamertemplate{headline}{  
\leavevmode
\begin{beamercolorbox}[wd=\paperwidth]{headline}
\vskip1cm
\raggedright
\usebeamercolor{title in headline}{
\color{fg}{\fontsize{110}{110}\selectfont {\inserttitle}}\\[3ex]}
\usebeamercolor{author in headline}{
\color{fg}\LARGE{\insertauthor}\\[1ex]}
\usebeamercolor{institute in headline}{
\color{fg}\large{\insertinstitute}\\[1ex]}  
\vskip2ex
\end{beamercolorbox}
\begin{beamercolorbox}[wd=\paperwidth]{lower separation line head}
\rule{0pt}{3pt}
\end{beamercolorbox}
}
% no navigation on a poster
\setbeamertemplate{navigation symbols}{}  


% Use rounded blocks
\setbeamertemplate{blocks}[rounded]

% Larger titles for the block
\makeatletter 
\newcommand\semiHuge{\@setfontsize\semiHuge{48}{45}}
\makeatother
\setbeamerfont*{block title}{family=\sffamily,series=\bfseries,size=\semiHuge}

Best Answer

enter image description here

\documentclass[]{beamer}
\usepackage[orientation=landscape,size=custom,width=165,height=105,scale=1.47,debug]{beamerposter}
\usetheme{Modified}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\title{Title}
\author[]{Authors}
\institute[]{Institute}
\begin{document}

% beamer has a problem filling vertical space in columns
% have to manually specify column heights 
% 
\newlength{\colheightb}
\setlength{\colheightb}{.85\paperheight}
\newcommand{\addheight}{\parbox{0pt}{\rule{0pt}{2cm}}}

\begin{frame}{}
\begin{columns}[T, totalwidth=\textwidth]
\begin{column}{.225\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section\addheight}
    \end{block} 
    \vfill
}
\end{column}

\begin{column}{.225\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section p\addheight}
    \end{block}
    \vfill
}
\end{column}

\begin{column}{.265\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section y\addheight}
    \end{block}
    \vfill
}
\end{column}

\begin{column}{.275\linewidth}
\vbox to \colheightb{%
    \begin{block}{Section 4\addheight}
    \end{block}
    \vfill
}
\end{column}

\end{columns}
\end{frame}
\end{document}

You can add the height you want through a macro like this:

\newcommand{\addheight}{\parbox{0pt}{\rule{0pt}{2cm}}}

Then, in each block title, you just add the \addheight command. Alternatively, you can add the following two lines to the preamble, as suggested by @GonzaloMedina, to automate this:

\newcommand{\addheight}{\parbox{0pt}{\rule{0pt}{2cm}}}
\setbeamerfont*{block title}{family=\sffamily,series=\bfseries\addheight,size=\semiHuge}

Then, there is no need to repeat \addheight in each block title. You can also change the value of 2cm as per your needs.

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