[Tex/LaTex] Changing URL colors in headline / footline of beamer template

beamerpresentationsurls

Problem:

I need to have URLs via \href{}{} be colored in blue text in the presentation. However, using \hypersetup{colorlinks=true,linkcolor = blue} changes the text in the section, subsection text in the headline, and the title text in the footline. These changes are problematic given the background color of the areas are blue.

Need:

I would really appreciate a better modification for section and subsection on the order of the first possible solution with the \renewcommand\insertshortitle or at least a pointer in the direction I should go.

The goal is to be able to use the modification to create a beamer theme.

Possible fixes (sorta):

I've found a few ideas and have implemented them with varying success found is to disable auto-coloring links. This has lead me to do \textcolor{blue}{\href{}{}}, which is not ideal.

In Beamer: hyperlinks and short title colors

There is a proposed solution with shorttitle:

\makeatletter
\renewcommand\insertshorttitle[1][]{%
  \beamer@setupshort{#1}%
  \let\thanks=\@gobble%
  \ifnum\c@page=1%
  \hyperlinkpresentationend{\beamer@insertshort{\usebeamercolor*[fg]{title in head/foot}\beamer@shorttitle}}%
  \else%
  \hyperlinkpresentationstart{\beamer@insertshort{\usebeamercolor*[fg]{title in head/foot}\beamer@shorttitle}}%
  \fi}
\makeatother

I have not been able to make this work with \insertsectionhead and \insertsubsectionhead. I would prefer this alternative to defining a new method for \href's.

There was another idea on how to disable linking here: How to remove link from title in foot

The main idea was to use: \let\hyperlink\@secondoftwo to suppress the creation of the link.

I marked it up using headline

\setbeamertemplate{headline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right,rightskip=1em]{section in head/foot}%
    \usebeamerfont{subsection in head/foot}\hspace*{2ex} \let\hyperlink\@secondoftwo\insertsectionhead
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,left,leftskip=1em]{subsection in head/foot}%
    \usebeamerfont{section in head/foot} \let\hyperlink\@secondoftwo\insertsubsectionhead \hspace*{2ex}
  \end{beamercolorbox}}%
  \vskip0pt%
}

However, this approach appends secondoftwo to the section and subsection strings.

The last option I have come across and implemented seems to have resolve the issue with the only downside being I have to include a new package (etoolbox). The idea came from:

errors with MakeUppercase and Beamer's insertsectionhead

\usepackage{etoolbox}
\makeatletter
\patchcmd{\beamer@section}
  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{\usebeamercolor*[fg]{section in head/foot}#1}}}
  {}{}
\patchcmd{\beamer@subsection}
  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{\usebeamercolor*[fg]{subsection in head/foot}#1}}}
  {}{}
\makeatother

MWE (visual of what's wrong)

\documentclass{beamer}

%normal
\usepackage{color}
\usepackage{beamerthemebars}
\usepackage{lmodern}
\usetheme{AnnArbor}
\usecolortheme{wolverine}

\setbeamercolor{palette tertiary}{bg=blue,fg=white}
\setbeamercolor{palette secondary}{bg=gray,fg=white}
\setbeamercolor{palette primary}{bg=pink,fg=white}

\beamertemplatenavigationsymbolsempty %hides navigation.
\usepackage{hyperref}
\usepackage{amssymb,amsmath}

\author[Coatless]{Lack of Coat}
\institute[Uni]{Uni All}
\date[Date]{\today}
\title[Title]{Fake Presentation}
\begin{document}

\section{Section naught}
\subsection{Subsection Ya}

\hypersetup{colorlinks=true,urlcolor=blue,linkcolor = blue}
% link color causes the section, subsection, and title to fg (font color) to be blue
\frame{\titlepage}

\hypersetup{colorlinks=false,urlcolor=blue,linkcolor = white}
% link color causes the section, subsection, and title to fg (font color) to be white
\frame{\titlepage}

\end{document}

Preview:
MWE

Best Answer

You can use

\hypersetup{colorlinks,urlcolor=blue}
\addtobeamertemplate{headline}{\hypersetup{linkcolor=.}}{}
\addtobeamertemplate{footline}{\hypersetup{linkcolor=.}}{}

to set the linkcolor to the current color . inside the templates headline and footline.

enter image description here

Code:

\documentclass[]{beamer}

\usepackage{beamerthemebars}
\usepackage{lmodern}
\usetheme{AnnArbor}
\usecolortheme{wolverine}

\setbeamercolor{palette tertiary}{bg=blue,fg=white}
\setbeamercolor{palette secondary}{bg=gray,fg=white}
\setbeamercolor{palette primary}{bg=pink,fg=white}

\beamertemplatenavigationsymbolsempty %hides navigation.

\hypersetup{colorlinks,urlcolor=blue}
\addtobeamertemplate{headline}{\hypersetup{linkcolor=.}}{}
\addtobeamertemplate{footline}{\hypersetup{linkcolor=.}}{}

\author[Coatless]{Lack of Coat}
\institute[Uni]{Uni All}
\date[Date]{\today}
\title[Title]{Fake Presentation}


\begin{document}

\section{Section naught}
\subsection{Subsection Ya}

\frame{\titlepage}

\begin{frame}{First Frame}
\href{http://tex.stackexchange.com/}{StackExchange}
\end{frame}
\end{document}

Additionally there is shorter possibility if only URLs should be colored:

\hypersetup{colorlinks,allcolors=.,urlcolor=blue}

Explaination

Look at the first line: It says that section in head/foot inherits colors from palette tertiary and redefine fg=red. Therefore palette tertiary remains unchanged and active section-titles are set to be red.

Similarly we want something like \setbeamercolor{section in head/foot shaded}{parent=palette tertiary,fg=blue} for inactive section-titles. Yes, we can set these colors. But no, Beamer will never use it. See the following code from beamerbasenavigation.sty:

\def\sectionentry#1#2#3#4#5{% section number, section title, page
  \ifnum#5=\c@part%
  \beamer@section@set@min@width
  \box\beamer@sectionbox\hskip1.875ex plus 1fill%
  \beamer@xpos=0\relax%
  \beamer@ypos=1\relax%
  \setbox\beamer@sectionbox=
  \hbox{\def\insertsectionhead{#2}%
    \def\insertsectionheadnumber{#1}%
    \def\insertpartheadnumber{#5}%
    {%
      \usebeamerfont{section in head/foot}\usebeamercolor[fg]{section in head/foot}%
      \ifnum\c@section=#1%
        \hyperlink{Navigation#3}{{\usebeamertemplate{section in head/foot}}}%
      \else%
        \hyperlink{Navigation#3}{{\usebeamertemplate{section in head/foot shaded}}}%
      \fi}%
  }%
  \ht\beamer@sectionbox=1.875ex%
  \dp\beamer@sectionbox=0.75ex%
  \fi\ignorespaces}

You could see that there is an \ifnum\c@section=#1 checking whether it should shade the section-title or not. However, the color theme is already applied at \usebeamercolor[fg]{section in head/foot}. Therefore \setbeamercolor{section in head/foot shaded}{parent=palette tertiary,fg=blue} is legal but useless.

But we still got one more chance: after \ifnum there is an \usebeamertemplate{section in head/foot shaded}. It is defined in beamerouterthemedefault.sty:

\defbeamertemplate*{section in head/foot shaded}{default}[1][50]
{\color{fg!#1!bg}\usebeamertemplate{section in head/foot}}

Notice that bg and fg here are the colors from section in head/foot. This explains why inactive section-titles seems to be transparent. Assigning brutally a new color at this point solves your problem.

[Tex/LaTex] Control colors and shading of navigation circles in Beamer top line

To influence the colouring of the mini frames without changing the background colour of the header, you can use the beamer colour mini frames (by default, this just takes the colours from section in head/foot, which is why changing this colour also influences the mini frames):

\setbeamercolor{mini frame}{fg=white,bg=black}

However, this only solves half of your problem: while it gives correct colours for the mini frames itself, the section name colour is still wrong, as it is controlled by section name in head/foot:

headline with mini frames highlighted/shaded as desired, but section name still in grey

To fix this, you can patch the internal beamer commands to use the mini frame colour instead of the header colour for the section name:

\usepackage{etoolbox}
\patchcmd{\sectionentry}{\usebeamercolor[fg]{section in head/foot}}{\usebeamercolor[fg]{mini frame}}{}{}

Together, this gives the desired result:

headline with mini frames and section name highlighted/shaded as desired

\documentclass[compress]{beamer}
\useoutertheme[footline=authortitle]{miniframes}
\usebackgroundtemplate{\includegraphics[height=\paperheight]{baggrund.jpg}}
\setbeamercolor{structure}{fg=white}
\setbeamercolor{normal text}{fg=white!80!blue}

\setbeamercolor{mini frame}{fg=white,bg=black}
\usepackage{etoolbox}
\patchcmd{\sectionentry}{\usebeamercolor[fg]{section in head/foot}}{\usebeamercolor[fg]{mini frame}}{}{}

\title{the title}
\author{John Doe}
\begin{document}

\section{S1}

\subsection{SS11}
\begin{frame}{Foo}
    Some text
\end{frame}
\begin{frame}{Bar}
    Some text
\end{frame}

\subsection{SS12}    
\begin{frame}{Baz}
    Some text
\end{frame}
\begin{frame}{Qux}
    Some text
\end{frame}

\section{S2}
\subsection{SS21}    
\begin{frame}{Buqz}
    Some text
\end{frame}

\subsection{SS22}
\begin{frame}{Bao}
    Some text
\end{frame}
\end{document}