I like the Boadilla layout for Beamer presentations, but I find its enumerate bullet points illegible, as illustrated below (from the Beamer Theme Matrix).

How can I change the formatting of the bullet points in the enumerate environment to something more legible, like the default style, illustrated below?

Is it possible to borrow a different style's bullet point formatting, either in whole, or in parts (itemize and enumerate separately)?

You can use

setbeamertemplate{itemize items}[default]

setbeamertemplate{enumerate items}[default]

See section 12.1 of the manual of beamer for more information.

documentclass{beamer}



usetheme{boadilla}



% Adapted from beamerinnerthemedfault.sty

setbeamertemplate{itemize item}{scriptsizeraise1.25pthbox{donotcoloroutermaths$blacktriangleright$}}

setbeamertemplate{itemize subitem}{tinyraise1.5pthbox{donotcoloroutermaths$blacktriangleright$}}

setbeamertemplate{itemize subsubitem}{tinyraise1.5pthbox{donotcoloroutermaths$blacktriangleright$}}

setbeamertemplate{enumerate item}{insertenumlabel.}

setbeamertemplate{enumerate subitem}{insertenumlabel.insertsubenumlabel}

setbeamertemplate{enumerate subsubitem}{insertenumlabel.insertsubenumlabel.insertsubsubenumlabel}

setbeamertemplate{enumerate mini template}{insertenumlabel}



begin{document}



begin{frame}

begin{enumerate}

item{bla}

  begin{enumerate}

  item{blubb}

    begin{enumerate}

    item{foo}

    end{enumerate}

  end{enumerate}

end{enumerate}

end{frame}



end{document}

You can use inner theme constructs to achieve a uniform style. For instance, when I prefer to use square face for items, sections and subsections, I would use the following.

useinnertheme{rectangles}

Please browse the beamer source code for various themes to get an idea about available inner themes and how various themes define certain styles. I felt that this way was easier to find what I was looking for to customize instead of reading the beamer manual.

Abstraction of Properties in Beamer

defbeamertemplate{element id}{option id}[argument index][default optional arg]{...definition...}

Beamer's Technique: Give everything a label (or unique id) and apply things by referring to their label/id.

Equivalent words for ids in beamer jargon from my experience

• template


• alias

Enumerated List Template Definitions

defbeamertemplate{enumerate item}{circle}{...definition...}

defbeamertemplate{enumerate subitem}{circle}{...definition...}

defbeamertemplate{enumerate subsubitem}{circle}{...definition...}

defbeamertemplate{enumerate mini template}{circle}{...definition...}

To make formatting easier, all of those levels can be abstracted into one object we can call a parent with

defbeamertemplateparent{enumerate items}{enumerate item,enumerate subitem,enumerate subsubitem,enumerate mini template}{}

It is also possible to abstract the hell out of the layers again by assigning an alias to the whole thing, but this is not done for enumerated lists:

defbeamertemplatealias{itemize item}{triangle}{default}

defbeamertemplatealias{itemize subitem}{triangle}{default}

defbeamertemplatealias{itemize subsubitem}{triangle}{default}

Example of Defaults for Enumerated

As you can see, there is no formatting, just numbering. This is why using ``''

defbeamertemplate*{enumerate item}{default}{insertenumlabel.}

defbeamertemplate*{enumerate subitem}{default}{insertenumlabel.insertsubenumlabel}

defbeamertemplate*{enumerate subsubitem}{default}{insertenumlabel.insertsubenumlabel.insertsubsubenumlabel}

defbeamertemplate*{enumerate mini template}{default}{insertenumlabel}

Example Using fontawesome as Bullet

Makes the bullet a right-facing chevron in itemized lists.

defbeamertemplate{itemize item}{chevron}{usebeamerfont*{itemize item}raise1.25pthbox{faAngleRight}}

setbeamertemplate{items}[chevron]

Boadilla

texmf-dist/tex/latex/beamer/beamerthemeBoadilla.sty

It just imports another inner theme, which controls aspects of the content of slides.
It loads rounded. Without looking into the details of rounded, I can guess from the semantics of the name
that that is ther reason for the ugly enumerated balls.