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Fix multi-line block titles

This commit is contained in:
Ross Churchley 2016-02-24 09:57:24 -08:00
parent 81adcb6a8f
commit 36f8d94172
1 changed files with 40 additions and 25 deletions
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65
source/beamerinnerthememetropolis.dtx
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@ -325,43 +325,58 @@
% the auxiliary macro |\metropolis@block| to define all three templates.
%
% \begin{macrocode}
\newlength{\metropolis@blocktitleskip}
\newlength{\metropolis@blockbodyskip}
\newlength{\metropolis@blocktitleadjustleft}
\newlength{\metropolis@blocktitleadjustright}
\newlength{\metropolis@blockbodyadjust}
\newcommand{\metropolis@block}[1]{
\setlength{\parskip}{\metropolis@parskip}
\par\vskip\medskipamount
% \end{macrocode}
%
% If a background color is defined for the block title or body, a little
% bit of padding is added to the corresponding box.
% If a background color is defined for the block title or body, we need to
% add a little bit of padding to the corresponding box. Ideally, this would
% be accomplished by setting |colsep=1ex|, which is intended to add
% ``color separation space'' only when the box has a colored background.
% Unfortunately, |colsep| also adds this separation if the background color
% is inherited, even if the inherited color is actually empty.
% (The technical reason for this boils down to the fact that the |\ifx|
% directive does not expand macros.)
%
% To achieve the correct spacing for |alertblock|s and |exampleblock|s
% as well as for normal blocks, we have to set |sep=1ex| in all cases and
% then subtract it from the left and right edges if |block title| has
% an empty background. This solution assumes that either all or none of
% |block title|, |block title alerted|, and |block title example| have an
% empty background, and likewise for |block body|, |block body alerted|,
% and |block body example|.
%
% \begin{macrocode}
\ifbeamercolorempty[bg]{block title}
{\setlength{\metropolis@blocktitleskip}{0ex}}
{\setlength{\metropolis@blocktitleskip}{1ex}}
\ifbeamercolorempty[bg]{block title}{
\setlength{\metropolis@blocktitleadjustleft}{-1ex}
\setlength{\metropolis@blocktitleadjustright}{-1ex plus 4em}
}{
\setlength{\metropolis@blocktitleadjustleft}{0pt}
\setlength{\metropolis@blocktitleadjustright}{0pt plus 4em}
}
\ifbeamercolorempty[bg]{block body}
{\setlength{\metropolis@blockbodyskip}{0ex}}
{\setlength{\metropolis@blockbodyskip}{1ex}}
\vspace*{1ex}
% \end{macrocode}
%
% Each block environment consists of two (possibly coloured) beamer boxes:
% one for the title and one for the body.
%
% \begin{macrocode}
{\setlength{\metropolis@blockbodyadjust}{-1ex}}
{\setlength{\metropolis@blockbodyadjust}{0ex}}
\setlength{\parskip}{0pt}
\begin{beamercolorbox}[%
ht=2.4ex,
dp=1ex,
leftskip=\metropolis@blocktitleskip,
rightskip=\metropolis@blocktitleskip]{block title#1}
\usebeamerfont*{block title#1}\insertblocktitle%
sep=1ex,
leftskip=\metropolis@blocktitleadjustleft,
rightskip=\metropolis@blocktitleadjustright]{block title#1}
\usebeamerfont*{block title#1}%
\insertblocktitle%
\end{beamercolorbox}%
\nointerlineskip%
\usebeamerfont{block body#1}%
\begin{beamercolorbox}[%
dp=1ex,
leftskip=\metropolis@blockbodyskip,
rightskip=\metropolis@blockbodyskip,
sep=1ex,
leftskip=\metropolis@blockbodyadjust,
rightskip=\metropolis@blockbodyadjust,
vmode]{block body#1}%
\vspace{-\metropolis@parskip}
\setlength{\parskip}{\metropolis@parskip}
}
% \end{macrocode}
%