Add logo only on some frame title

Question

I am using the solution from this question: Positioning logo in the front page as well as slides to add a logo on the top right of the title frame.

My problem is a bit more complicated:

• I have a set of 4 logos (pdf and png)
• some slides should not have any logo
• some should have 1 logo
• some should have more than 1 logo (aligned horizontally on the top right of the title bar)

I am using:

 \usetheme[height=9mm]{Rochester} 

and I am using many time the subtitles.

I have copied-and-pasted the MWE from the linked answer:

\documentclass{beamer}
\usetheme[height=9mm]{Rochester} 
\usecolortheme{beaver}
\usepackage{tikz}

\title{The title}
\institute[Inst.]{The Institute}
\date{\today}

\begin{document}


\addtobeamertemplate{frametitle}{}{%
\begin{tikzpicture}[remember picture,overlay]
\node[anchor=north east,yshift=2pt] at (current page.north east) {\includegraphics[height=0.8cm]{cat}};
\end{tikzpicture}}

\begin{frame}{Motivation}
Now the logo is visible
\end{frame}

\begin{frame}{Motivation}
\framesubtitle{A}
Now the logo is visible
\end{frame}

\end{document}

Answer 1

You could define the frametitle template so it puts the logos by fetching which ones from a macro that you redefine at the right points.

\documentclass{beamer}
\usetheme[height=9mm]{Rochester}
\usecolortheme{beaver}
\usepackage{tikz}

\title{The title}
\institute[Inst.]{The Institute}
\date{\today}

\def\thisframelogos{}

\newcommand{\framelogo}[1]{\def\thisframelogos{#1}}

\addtobeamertemplate{frametitle}{}{%
\begin{tikzpicture}[remember picture,overlay]
\node[anchor=north east,yshift=2pt] at (current page.north east) {%
    \foreach \img in \thisframelogos {%
        \hspace{.5ex}%
        \includegraphics[height=0.8cm]{\img}%
    }%
};
\end{tikzpicture}}


\begin{document}

\begin{frame}{Motivation}
No logo
\end{frame}

\framelogo{cat}

\begin{frame}{Motivation}
Now the logo is visible
\end{frame}

\framelogo{cat,cat}

\begin{frame}{Motivation}
\framesubtitle{A}
Now we have two logos
\end{frame}

\end{document}

The \thisframelogos macro stores the list of images you would like to put in the title of the next frames. The \framelogo macro just sets \thisframelogos.

When \thisframelogos is changed every frame created after the change will use its contents as the list of images to put. The images are put using a \foreach command which is defined in tikz.

To remove any logo just use \framelogo{} before your frame.

As a key for frame

To make the trick non "stateful" but applicable per-frame we can define a custom key and reset the \thisframelogos with the help of etoolbox (see this)

\documentclass{beamer}
\usetheme[height=9mm]{Rochester}
\usecolortheme{beaver}
\usepackage{tikz}
\usepackage{etoolbox}

\title{The title}
\institute[Inst.]{The Institute}
\date{\today}

\newcommand{\framelogo}[1]{\def\thisframelogos{#1}}

\addtobeamertemplate{frametitle}{}{%
\begin{tikzpicture}[remember picture,overlay]
\node[anchor=north east,yshift=2pt] at (current page.north east) {%
    \foreach \img in \thisframelogos {%
        \hspace{.5ex}%
        \includegraphics[height=0.8cm]{\img}%
    }%
};
\end{tikzpicture}}

\BeforeBeginEnvironment{frame}{\framelogo{}}


\makeatletter
\define@key{beamerframe}{logos}[true]{\framelogo{#1}}
\makeatother


\begin{document}

\begin{frame}{Motivation}
No logo
\end{frame}

\begin{frame}[logos=cat]{Motivation}
Now the logo is visible
\end{frame}

\begin{frame}{Motivation}
No logo again
\end{frame}

\begin{frame}[logos={cat,cat}]{Motivation}
\framesubtitle{A}
Now we have two logos
\end{frame}

\end{document}

Answer 2

This is a similar idea to other answers, implemented using the list features provided by etoolbox.

I define three new user-level commands for configuring the logo.

\setmylogo{}

This command sets a comma-separated list of images as the current logo (to be used until further notice, if used outside a frame environment). For example,

\setmylogo{logo1,logo2}

To clear the logos, you can use an empty argument i.e. \setmylogo{}.

The second command is

\addlogoleft{}

This adds a comma-separated list of images to the left of the existing logo. For example, if the logo is logo1,logo2, then

\addlogoleft{logo0}

will set the logo image list to logo0,logo1,logo2.

Similarly

\addlogoright{}

adds a comma-separated list of images to the right of the existing logo.

Here's a complete example:

\documentclass{beamer}
\usetheme[height=9mm]{Rochester}
\usecolortheme{beaver}
\usepackage{tikz,etoolbox}
\title{The title}
\institute[Inst.]{The Institute}
\date{\today}
\newcommand*\mylogo{%
  \renewcommand*\do[1]{\includegraphics[height=8mm]{##1}}%
  \dolistloop\mylogolist}
\newcommand*\setmylogo[1]{%
  \renewcommand*\mylogolist{}%
  \forcsvlist{\listadd\mylogolist}{#1}}
\newcommand*\addlogoleft[1]{%
  \global\let\oldmylogolist\mylogolist
  \renewcommand*\mylogolist{}%
  \forcsvlist{\listadd\mylogolist}{#1}%
  \forcsvlist{\listeadd\mylogolist}{\oldmylogolist}}
\newcommand*\addlogoright[1]{%
  \forcsvlist{\listadd\mylogolist}{#1}}
\newcommand*\mylogolist{}
\begin{document}
  \addtobeamertemplate{frametitle}{}{%
    \begin{tikzpicture}[remember picture,overlay]
      \node[anchor=north east,yshift=2pt] at (current page.north east) {\mylogo};
    \end{tikzpicture}}
  \begin{frame}{Motivation}
    No tiger.
  \end{frame}
  \setmylogo{tiger}
  \begin{frame}{Motivation}{A}
    Lone tiger.
  \end{frame}
  \addlogoleft{tiger,example-image-a}
  \begin{frame}{Mix}
    Lone tiger with document.
  \end{frame}
  \addlogoright{example-image-b,example-image-c}
  \begin{frame}{Mix}
    Lone tiger with documents.
  \end{frame}
  \setmylogo{tiger,tiger,tiger,tiger}
  \begin{frame}{Multiplication}
    Lots of tigers.
  \end{frame}
  \setmylogo{}
  \begin{frame}{None}
    No tiger.
  \end{frame}
\end{document}

EDIT

Since you apparently don't want anything quite this flexible but prefer to specify the logo for each frame on which it is required, here's a simplified version. In this case, just use \setmylogo{} with a comma-separated list of images inside the relevant frame environment:

\documentclass{beamer}
\usetheme[height=9mm]{Rochester}
\usecolortheme{beaver}
\usepackage{tikz,etoolbox}
\title{The title}
\institute[Inst.]{The Institute}
\date{\today}
\newcommand*\mylogo{%
  \renewcommand*\do[1]{\includegraphics[height=8mm]{##1}}%
  \tikz[remember picture, overlay]\node[anchor=north east, yshift=2pt] at (current page.north east) {\dolistloop\mylogolist};}
\newcommand*\setmylogo[1]{%
  \renewcommand*\mylogolist{}%
  \forcsvlist{\listadd\mylogolist}{#1}%
  \mylogo}
\newcommand*\mylogolist{}
\begin{document}
  \begin{frame}{Motivation}
    No tiger.
  \end{frame}
  \begin{frame}{Motivation}{A}
  \setmylogo{tiger}
    Lone tiger.
  \end{frame}
  \begin{frame}{Mix}
  \setmylogo{tiger,example-image-a}
    Lone tiger with document.
  \end{frame}
  \begin{frame}{Mix}
  \setmylogo{example-image-b,example-image-c}
    Lone tiger with documents.
  \end{frame}
  \begin{frame}{Multiplication}
  \setmylogo{tiger,tiger,tiger,tiger}
    Lots of tigers.
  \end{frame}
  \begin{frame}{None}
    No tiger.
  \end{frame}
\end{document}

Notice that there is no need for \setmylogo{} in the final frame as the standard default is no logo.

Answer 3

Based on Passing arguments to custom frame option you can define custom beamer templates for the frametitle and chose them via frameoptions

\documentclass{beamer}
\usetheme[height=9mm]{Rochester} 
\usecolortheme{beaver}
\usepackage{tikz}
\usepackage{etoolbox}

\title{The title}
\institute[Inst.]{The Institute}
\date{\today}

\makeatletter
\defbeamertemplate{frametitle}{mydefault}
{
    \vspace*{-1cm}%
  \ifbeamercolorempty[bg]{frametitle}{}{\nointerlineskip}%
  \@tempdima=\textwidth%
  \advance\@tempdima by\beamer@leftmargin%
  \advance\@tempdima by\beamer@rightmargin%
  \begin{beamercolorbox}[sep=0.3cm,left,wd=\the\@tempdima]{frametitle}
    \usebeamerfont{frametitle}%
    \vbox{}\vskip-1ex%
    \if@tempswa\else\csname beamer@fteleft\endcsname\fi%
    \strut\insertframetitle\strut\par%
    {%
        \ifx\insertframesubtitle\@empty%
        \else%
        {\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle\strut\par}%
        \fi
    }%
    \vskip-1ex%
    \if@tempswa\else\vskip-.3cm\fi% set inside beamercolorbox... evil here...
  \end{beamercolorbox}%
}

\defbeamertemplate{frametitle}{imagetitle}[1]{%
    \vspace*{-1cm}%
    \ifbeamercolorempty[bg]{frametitle}{}{\nointerlineskip}%
    \@tempdima=\textwidth%
    \advance\@tempdima by\beamer@leftmargin%
    \advance\@tempdima by\beamer@rightmargin%
    \begin{beamercolorbox}[sep=0.3cm,left,wd=\the\@tempdima]{frametitle}
        \usebeamerfont{frametitle}%
        \vbox{}\vskip-1ex%
        \if@tempswa\else\csname beamer@fteleft\endcsname\fi%
        \strut\insertframetitle\strut\par%
        {%
            \ifx\insertframesubtitle\@empty%
            \else%
            {\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle\strut\par}%
            \fi
        }%
        \vskip-1ex%
        \if@tempswa\else\vskip-.3cm\fi% set inside beamercolorbox... evil here...
    \end{beamercolorbox}%
    \begin{tikzpicture}[remember picture,overlay]
        \node[anchor=north east,yshift=2pt] at (current page.north east) {\includegraphics[height=0.8cm]{#1}};
    \end{tikzpicture}   
}

\BeforeBeginEnvironment{frame}{%
    \setbeamertemplate{frametitle}[mydefault]%
}

\define@key{beamerframe}{imagetitle}[true]{%
    \setbeamertemplate{frametitle}[imagetitle]{#1}%
}
\makeatother

\begin{document}

    \begin{frame}
        \frametitle{bla}
        no logo
    \end{frame} 

    \begin{frame}[imagetitle=example-grid-100x100bp.pdf]
        \frametitle{bla}
        logo
    \end{frame}

    \begin{frame}[imagetitle=example-image.pdf]
        \frametitle{bla}
        \framesubtitle{blub}
        another logo
    \end{frame} 

    \begin{frame}
        \frametitle{bla}
        \framesubtitle{blub}
        no logo
    \end{frame}

\end{document}