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73 lines
1.8 KiB
73 lines
1.8 KiB
% Copyright 2003--2007 by Till Tantau
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% Copyright 2010 by Vedran Mileti\'c
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% Copyright 2017 by Joseph Wright
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%
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% This file may be distributed and/or modified
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%
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% 1. under the LaTeX Project Public License and/or
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% 2. under the GNU Public License.
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%
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% See the file doc/licenses/LICENSE for more details.
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%
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% version 1.71 bugfix for \pgfpagescurrentpagewillbelogicalpage (hv)
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%
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%
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\mode
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<presentation>
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\newif\ifbeamer@twoscreenstext
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\newif\ifbeamer@dosecondmode
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\defbeameroption{previous slide on second screen}[right]%
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{%
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\ifx\@onlypreamble\@notprerr
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\ltx@ifpackageloaded{pgfpages}{}{%
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\ClassError{beamer}{`pgfpages' package necessary for this option}{}%
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}%
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\else%
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\RequirePackage{pgfpages}%
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\fi%
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\pgfpagesuselayout{two screens with lagging second}[second #1]%
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\beamer@twoscreenstexttrue
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\nofiles
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}
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\defbeameroption{second mode text on second screen}[right]%
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{%
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\ifx\@onlypreamble\@notprerr
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\ltx@ifpackageloaded{pgfpages}{}{%
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\ClassError{beamer}{`pgfpages' package necessary for this option}{}%
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}%
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\else%
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\RequirePackage{pgfpages}%
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\fi%
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\pgfpagesuselayout{two screens with optional second}[second #1]%
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\beamer@twoscreenstexttrue
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}
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\defbeameroption{always typeset second mode}[true]%
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{%
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\def\beamer@defaultdosecondmode{#1}%
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}
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\def\beamer@defaultdosecondmode{false}
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\long\def\beamer@dosecondscreennow#1{% called from \beamer@doseveralframes
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\ifbeamer@dosecondmode%
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{%
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\clearpage
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\def\beamer@currentmode{second}%
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\gdef\beamer@doifnotinframe{}%
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\def\beamer@doifinframe{\begin{beamer@frameslide}%
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#1%
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\end{beamer@frameslide}%
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\pgfpagescurrentpagewillbelogicalpage{2}%
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\clearpage
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}%
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\beamer@masterdecode{\beamer@whichframes}%
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\beamer@donow
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}%
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\fi
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}
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\mode
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<all>
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