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diff --git a/Master/texmf-dist/tex/latex/beamer/beamerbaseboxes.sty.orig b/Master/texmf-dist/tex/latex/beamer/beamerbaseboxes.sty.orig
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+% Copyright 2007 by Till Tantau
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Public License.
+%
+% See the file doc/licenses/LICENSE for more details.
+
+\RequirePackage{keyval}
+
+\def\beamerboxesdeclarecolorscheme#1#2#3{% scheme name, upper color, lower color
+ \setbeamercolor{@scheme upper #1}{fg=white,bg=#2}
+ \setbeamercolor{@scheme lower #1}{bg=#3}
+}
+
+\define@key{beamerboxes}{scheme}{\def\bmb@upper{@scheme upper #1}\def\bmb@lower{@scheme lower #1}}
+\define@key{beamerboxes}{upper}{\def\bmb@upper{#1}}
+\define@key{beamerboxes}{lower}{\def\bmb@lower{#1}}
+\define@key{beamerboxes}{width}{\edef\bmb@width{#1}}
+\define@key{beamerboxes}{shadow}[true]{\csname bmb@shadow#1\endcsname}
+
+\newif\ifbmb@shadow
+\newbox\bmb@box
+\newbox\bmb@colorbox
+\newdimen\bmb@boxwidth
+\newdimen\bmb@boxheight
+\newdimen\bmb@prevheight
+\newdimen\bmb@temp
+\newdimen\bmb@dima
+\newdimen\bmb@dimb
+
+\newcommand\beamerboxesrounded[2][]
+{%
+ \global\let\beamer@firstlineitemizeunskip=\relax%
+ \vbox\bgroup%
+ \setkeys{beamerboxes}{upper=block title,lower=block body,width=\textwidth,shadow=false}%
+ \setkeys{beamerboxes}{#1}%
+ {%
+ \usebeamercolor{\bmb@lower}%
+ \globalcolorstrue%
+ \colorlet{lower.bg}{bg}%
+ }%
+ {%
+ \usebeamercolor{\bmb@upper}%
+ \globalcolorstrue%
+ \colorlet{upper.bg}{bg}%
+ }%
+ %
+ % Typeset head
+ %
+ \vskip4bp
+ \setbox\bmb@box=\hbox{%
+ \begin{minipage}[b]{\bmb@width}%
+ \usebeamercolor[fg]{\bmb@upper}%
+ #2%
+ \end{minipage}}%
+ \ifdim\wd\bmb@box=0pt%
+ \setbox\bmb@box=\hbox{}%
+ \ht\bmb@box=1.5pt%
+ \bmb@prevheight=-4.5pt%
+ \else%
+ \wd\bmb@box=\bmb@width%
+ \bmb@temp=\dp\bmb@box%
+ \ifdim\bmb@temp<1.5pt%
+ \bmb@temp=1.5pt%
+ \fi%
+ \setbox\bmb@box=\hbox{\raise\bmb@temp\hbox{\box\bmb@box}}%
+ \dp\bmb@box=0pt%
+ \bmb@prevheight=\ht\bmb@box%
+ \fi%
+ \bmb@temp=\bmb@width%
+ \bmb@dima=\bmb@temp\advance\bmb@dima by2.2bp%
+ \bmb@dimb=\bmb@temp\advance\bmb@dimb by4bp%
+ \hbox{%
+ \begin{pgfpicture}{0bp}{+-\ht\bmb@box}{0bp}{+-\ht\bmb@box}
+ \ifdim\wd\bmb@box=0pt%
+ \color{lower.bg}%
+ \else%
+ \color{upper.bg}%
+ \fi%
+ \pgfpathqmoveto{-4bp}{-1bp}
+ \pgfpathqcurveto{-4bp}{1.2bp}{-2.2bp}{3bp}{0bp}{3bp}
+ \pgfpathlineto{\pgfpoint{\bmb@temp}{3bp}}
+ \pgfpathcurveto%
+ {\pgfpoint{\bmb@dima}{3bp}}%
+ {\pgfpoint{\bmb@dimb}{1.2bp}}%
+ {\pgfpoint{\bmb@dimb}{-1bp}}%
+ \bmb@dima=-\ht\bmb@box%
+ \advance\bmb@dima by-2pt%
+ \pgfpathlineto{\pgfpoint{\bmb@dimb}{\bmb@dima}}
+ \pgfpathlineto{\pgfpoint{-4bp}{\bmb@dima}}
+ \pgfusepath{fill}
+ \end{pgfpicture}%
+ \copy\bmb@box%
+ }%
+ \nointerlineskip%
+ \vskip-1pt%
+ \ifdim\wd\bmb@box=0pt%
+ \else%
+ \hbox{%
+ \begin{pgfpicture}{0pt}{0pt}{\bmb@width}{6pt}
+ \bmb@dima=\bmb@width%
+ \advance\bmb@dima by8bp%
+ \pgfpathrectangle{\pgfpoint{-4bp}{-1bp}}{\pgfpoint{\bmb@dima}{8bp}}
+ \pgfusepath{clip}
+ {%
+ \pgftransformshift{\pgfpoint{-4bp}{0bp}}%
+ \pgftext[left,base]{\pgfuseshading{bmb@transition}}%
+ }%
+ \end{pgfpicture}%
+ }%
+ \nointerlineskip%
+ \vskip-0.5pt%
+ \fi%
+ \setbox\bmb@colorbox=\hbox{{\pgfpicturetrue\pgfsetcolor{lower.bg}}}%
+ \setbox\bmb@box=\hbox%
+ \bgroup%
+ \begin{minipage}[b]{\bmb@width}%
+ \vskip2pt%
+ \usebeamercolor[fg]{\bmb@lower}%
+ \colorlet{beamerstructure}{upper.bg}%
+ \colorlet{structure}{upper.bg}%
+ %\color{.}%
+}
+
+\def\endbeamerboxesrounded
+{%
+ \end{minipage}%
+ \egroup%
+ \bmb@temp=\dp\bmb@box%
+ \advance\bmb@temp by.5pt%
+ \setbox\bmb@box=\hbox{\raise\bmb@temp\hbox{\box\bmb@box}}%
+ \dp\bmb@box=0pt%
+ \bmb@boxwidth=\bmb@width%
+ \bmb@boxheight=\ht\bmb@box%
+ \advance\bmb@boxheight by4bp%
+ \advance\bmb@boxheight by\bmb@prevheight%
+ \ifbmb@shadow%
+ \pgfdeclareradialshading{bmb@shadowball}{\pgfpointorigin}
+ {%
+ color(0bp)=(pgftransparent!50);
+ color(4bp)=(pgftransparent!100)
+ }%
+ \pgfdeclareradialshading{bmb@shadowballlarge}{\pgfpointorigin}
+ {%
+ color(0bp)=(pgftransparent!0);
+ color(8bp)=(pgftransparent!100)
+ }%
+ \pgfdeclarehorizontalshading{bmb@shadowhorz}{\bmb@boxheight-6bp}
+ {%
+ color(0bp)=(pgftransparent!0);
+ color(8bp)=(pgftransparent!100)
+ }%
+ \pgfdeclareverticalshading{bmb@shadowvert}{\bmb@boxwidth-4bp}
+ {%
+ color(0bp)=(pgftransparent!100);
+ color(8bp)=(pgftransparent!0)
+ }%
+ \pgfdeclarefading{bmb@shadowmask}
+ {%
+ \begin{pgfpicture}
+ \pgftext[at=\pgfpoint{4bp}{4bp}]{\pgfuseshading{bmb@shadowball}}
+ \pgftext[at=\pgfpoint{\bmb@boxwidth}{8bp}]{\pgfuseshading{bmb@shadowballlarge}}
+ \pgftext[at=\pgfpoint{\bmb@boxwidth+4bp}{\bmb@boxheight+2bp}]{\pgfuseshading{bmb@shadowball}}
+ \pgftext[left, at=\pgfpoint{4bp}{4bp}]{\pgfuseshading{bmb@shadowvert}}
+ \pgftext[base, at=\pgfpoint{\bmb@boxwidth+4bp}{8bp}]{\pgfuseshading{bmb@shadowhorz}}
+ %
+ % clipping is needed because shadow is typeset on top of box
+ \begin{pgfscope}
+ \pgfsetcolor{black}
+ \pgfpathrectangle{\pgfpoint{4bp}{8bp}}{\pgfpoint{\bmb@boxwidth-0.2bp}{\bmb@boxheight-2bp}}
+ \pgfusepath{fill}
+ \end{pgfscope}
+ \end{pgfpicture}
+ }%
+ \fi%
+ \bmb@temp=\bmb@width%
+ \bmb@dima=\bmb@temp\advance\bmb@dima by2.2bp%
+ \bmb@dimb=\bmb@temp\advance\bmb@dimb by4bp%
+ \hbox{%
+ \begin{pgfpicture}{0bp}{0bp}{0bp}{0bp}
+ \ifbmb@shadow%
+ \begin{pgfscope}
+ \pgfpathrectangle{\pgfpoint{0bp}{-7bp}}
+ {\pgfpoint{\bmb@boxwidth+8bp}{\bmb@boxheight+6bp}}
+ \pgfsetfading{bmb@shadowmask}{%
+ \pgftransformshift{\pgfpoint{0.5\bmb@boxwidth+6bp}{0.5\bmb@boxheight-4bp}}}
+ \pgfusepath{fill}
+ \end{pgfscope}
+ \fi%
+ \unhbox\bmb@colorbox%
+ \pgfpathqmoveto{-4bp}{1bp}
+ \pgfpathqcurveto{-4bp}{-1.2bp}{-2.2bp}{-3bp}{0bp}{-3bp}
+ \pgfpathlineto{\pgfpoint{\the\bmb@temp}{-3bp}}
+ \pgfpathcurveto%
+ {\pgfpoint{\the\bmb@dima}{-3bp}}%
+ {\pgfpoint{\the\bmb@dimb}{-1.2bp}}%
+ {\pgfpoint{\the\bmb@dimb}{1bp}}%
+ {
+ \bmb@dima=\ht\bmb@box%
+ \pgfpathlineto{\pgfpoint{\bmb@dimb}{\bmb@dima}}
+ \pgfpathlineto{\pgfpoint{-4bp}{\bmb@dima}}
+ \pgfusepath{fill}
+ }
+ \end{pgfpicture}%
+ \box\bmb@box%
+ }%
+ \ifbmb@shadow%
+ \vskip4bp minus 2bp%
+ \else%
+ \vskip2bp%
+ \fi%
+ \egroup% of \vbox\bgroup
+}
+
+% Shadings
+% Transition line
+\pgfdeclareverticalshading[lower.bg,upper.bg]{bmb@transition}{200cm}%
+{%
+ color(0pt)=(lower.bg);
+ color(2pt)=(lower.bg);
+ color(4pt)=(upper.bg)
+}