Indent subsections in Beamer's TOC

Question

Following Beamer: increase radius of circle in TOC and include subsection bullet I set the 'subsection in toc' of Beamer by:

\setbeamertemplate{subsection in toc}
 {\leavevmode\leftskip=2em$\bullet$\hskip1em\inserttocsubsection\par}

However, if a subsection title exceeds the current line, the new line is not indented correcty; the new line begins below the bullet and is not aligend with the first line. How can I change this?

Answer 1

A quick solution is to put the tocsubsection contents into a parbox:

\setbeamertemplate{subsection in toc}
 {\leavevmode\leftskip=2em$\bullet$\hskip1em\parbox[t]{\textwidth-\leftskip-2em}{\inserttocsubsection}\vspace{2ex}\par}

Note that for the arithmetic to calculate the length of the parbox, the package calc is required. A little vertical space is added after the parbox to solve somewhat the spacing problems noted by Julian. The vertical spacing for the short subsection title is different from the one in the larger subsection titles.