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author | Karl Berry <karl@freefriends.org> | 2006-11-01 23:50:14 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2006-11-01 23:50:14 +0000 |
commit | bcec5cf9be8a366b39aab4c13fa9e455b6e724ca (patch) | |
tree | 10af70bab7eedf89d55be20d1a3b9c334ad80ea3 /Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex | |
parent | 8cdb9ebeb89ec677972e7a568938c6a0dd313145 (diff) |
beamer update to get solutions/ et al. (reported by gerben)
git-svn-id: svn://tug.org/texlive/trunk@2379 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex')
-rw-r--r-- | Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex b/Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex deleted file mode 100644 index 888f0b3987d..00000000000 --- a/Master/texmf-dist/doc/latex/beamer/beamerug-tricks.tex +++ /dev/null @@ -1,271 +0,0 @@ -% $Header: /cvsroot/latex-beamer/latex-beamer/doc/beamerug-tricks.tex,v 1.6 2004/11/01 16:18:45 tantau Exp $ - -% Copyright 2003, 2004 by Till Tantau <tantau@users.sourceforge.net>. -% -% This program can be redistributed and/or modified under the terms -% of the GNU Public License, version 2. - - - -\section{How To Uncover Things Piecewise} - - -\subsection{Uncovering an Enumeration Piecewise} - -A common usage of overlays is to show a list of points in an -enumeration in a piecewise fashion. The easiest and most flexible way -to do this is the following: - -\begin{verbatim} -\begin{itemize} -\item<1-> First point. -\item<2-> Second point. -\item<3-> Third point. -\end{itemize} -\end{verbatim} - -The advantage of this approach is that you retain total control over -the order in which items are shown. By changing, for example, the last -specification to |<2->|, you can have the last two points uncovered at -the same time. - -A disadvantage of the approach is that you will have to renumber -everything if you add a new item. This is usually not such a big -problem, but it can be a nuisance. - -To automatize the uncovering, you can use the following code: - -\begin{verbatim} -\begin{itemize}[<+->] -\item First point. -\item Second point. -\item Third point. -\end{itemize} -\end{verbatim} - -The effect of the |[<+->]| is to install a \emph{default overlay - specification}, see the definition of |itemize| for details. - -Now, suppose you wish the second and third point to be shown at the -same time. You could achieve this by adding the specification |<2->| -to either the second or third |\item| command. However, then you still -have to do some renumbering if you add a new item at the beginning. A -better approach is to temporarily use a different overlay -specification and the dot-notation: - -\begin{verbatim} -\begin{itemize}[<+->] -\item First point. -\item[<.->] Second point. -\item Third point. -\end{itemize} -\end{verbatim} - -You might wish to build your own macros based on these ideas (like an -|itemstep| environment or a |\itemlikeprevious| command). - - - -\subsection{Hilighting the Current Item in an Enumeration} - -If you uncover an enumeration piecewise, it is sometimes a good idea -to hilight the last uncovered point to draw the audience's attention -to it. This is best achieved as follows: - - -\begin{verbatim} -\begin{itemize} -\item<1-| alert@1> First point. -\item<2-| alert@2> Second point. -\item<3-| alert@3> Third point. -\end{itemize} -\end{verbatim} - -or - -\begin{verbatim} -\begin{itemize}[<+-| alert@+>] -\item First point. -\item Second point. -\item Third point. -\end{itemize} -\end{verbatim} - -Note that this will draw the little item symbol also in red. - - - -\subsection{Changing Symbol Before an Enumeration} - -When uncovering a list of tasks or problems, you may desire that the -symbol in front of the last uncovered symbol is, say, a ballot~X, -while for the previous items it is a check mark (you'll find these -characters in some Dingbats fonts). - -The best way to achieve this is to implement a new action -environment. If this action is activated, it temporarily changes the -item symbol template to the other symbol: - -\begin{verbatim} -\newenvironment{ballotenv} -{\only{% - \setbeamertemplate{itemize item}{code for showing a ballot}% - \setbeamertemplate{itemize subitem}{code for showing a smaller ballot}% - \setbeamertemplate{itemize subsubitem}{code for showing a smaller ballot}}} -{} - -\setbeamertemplate{itemize item}{code for showing a check mark} -\setbeamertemplate{itemize subitem}{code for showing a smaller check mark} -\setbeamertemplate{itemize subsubitem}{code for showing a smaller check mark} -\end{verbatim} - -The effect of the code is to install a check mark as the default -template. If the action |ballot| is now requested for some item, this -template will temporarily be replaced by the ballot templates. - -Note that the |ballotenv| is invoked with the overlay specification -given for the action directly following it. This causes the |\only| to -be invoked exactly for the specified overlays. - -Here are example usages: - -\begin{verbatim} -\begin{itemize} -\item<1-| ballot@1> First point. -\item<2-| ballot@2> Second point. -\item<3-| ballot@3> Third point. -\end{itemize} -\end{verbatim} - -and - -\begin{verbatim} -\begin{itemize}[<+-| ballot@+>] -\item First point. -\item Second point. -\item Third point. -\end{itemize} -\end{verbatim} - -In the following example, more and more items become ``checked'' from -slide to slide: - -\begin{verbatim} -\begin{itemize}[<ballot@+-| visible@1-,+(1)>] -\item First point. -\item Second point. -\item Third point. -\end{itemize} -\end{verbatim} - -The important point is |ballot@+|. The funny |visible@1-,+(1)| has the -following effect: Although it has no effect with respect to what is -shown (after all, it applies to all slides), it ensures that in -the enumeration the slide number 4 is mentioned. Thus there will also -be a slide in which all three points are checked. - - -\subsection{Uncovering Tagged Formulas Piecewise} - -Suppose you have a three-line formula as the following: -\begin{verbatim} -\begin{align} - A &= B \\ - &= C \\ - &= D -\end{align} -\end{verbatim} - -Uncovering this formula line-by-line is a little tricky. A first idea -is to use the |\pause| or |\onslide| commands. Unfortunately, these do -not work since |align| internally reprocesses its input several times, -which messes up the delicate internals of the commands. The next idea -is the following, which works a little better: -\begin{verbatim} -\begin{align} - A &= B \\ - \uncover<2->{&= C \\} - \uncover<3->{&= D} -\end{align} -\end{verbatim} -Unfortunately, this does not work in the presence of tags (so it works -for the |align*| environment). What happens is that the tag of the -last line is shown on all slides. The problem here is that the tag is -created when |\\| is encountered or when |\end{align}| is -encountered. In the last line these are already ``behind'' the -|\uncover|. - -To solve this problem, you can add an empty line without a tag and then -insert a negative vertical skip to undo the last line: -\begin{verbatim} -\begin{align} - A &= B \\ - \uncover<2->{&= C \\} - \uncover<3->{&= D \\} - \notag - \end{align} -\vskip-1.5em -\end{verbatim} - - -\subsection{Uncovering a Table Rowwise} - -When you wish to uncover a table line-by-line, you will run into all -sorts of problems if there are vertical and horizontal lines in the -table. The reason is that the first vertical line at the left end is -drawn before the line is even read (and thus, in particular, before -any |\onslide| command can be read). However, placing a |\pause| or -|\uncover| at the end of the line before is also not helpful since it -will then suppress the horizontal line below the last uncovered line. - -A possible way to solve this problem is not to use either horizontal -or vertical lines. Instead, colouring the lines using the |colortbl| -package is a good alternative to structure the table. Here is an -optically pleasing example, where the table is uncovered line-wise: - -\begin{verbatim} -\rowcolors[]{1}{blue!20}{blue!10} -\begin{tabular}{l!{\vrule}cccc} - Class & A & B & C & D \\\hline - X & 1 & 2 & 3 & 4 \pause\\ - Y & 3 & 4 & 5 & 6 \pause\\ - Z & 5 & 6 & 7 & 8 -\end{tabular} -\end{verbatim} - -By using |\onslide| instead of |\pause|, you can get more fine-grained -control over which line is shown on which slide. - - -\subsection{Uncovering a Table Columnwise} - -The same problems as for uncovering a table linewise arise for -uncovering it columnwise. - -Once more, using the |colortbl| package offers a solution. In the -following example, the |tabular| header is used to insert |\onslide| -commands, one for each column, that cover the entries in the column -from a certain slide on. At the end of the last column, the |\onslide| -without a specification ensures that the first column on the next row -is once more shown normally. - -Inserting a horizontal line is tricky since it will protrude over the -full width of the table also in the covered version. The best idea is -just not to use horizontal bars. - -\begin{verbatim} -\rowcolors[]{1}{blue!20}{blue!10} -\begin{tabular}{l!{\vrule}c<{\onslide<2->}c<{\onslide<3->}c<{\onslide<4->}c<{\onslide}c} - Class & A & B & C & D \\ - X & 1 & 2 & 3 & 4 \\ - Y & 3 & 4 & 5 & 6 \\ - Z & 5 & 6 & 7 & 8 -\end{tabular} -\end{verbatim} - - - -%%% Local Variables: -%%% mode: latex -%%% TeX-master: "beameruserguide" -%%% End: |