summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/doc/latex/wrapfig
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2011-04-11 18:00:35 +0000
committerKarl Berry <karl@freefriends.org>2011-04-11 18:00:35 +0000
commit3e2ffdcdcb8cf4a15c8db8bafad489298e610004 (patch)
tree33efe928727c0b33214f85982334da1003593b84 /Master/texmf-dist/doc/latex/wrapfig
parent094823c890b3cea700a2ed9c3678f49f9eb4e1eb (diff)
wrapfig doc (9apr11)
git-svn-id: svn://tug.org/texlive/trunk@22048 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/latex/wrapfig')
-rw-r--r--Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.pdfbin0 -> 330855 bytes
-rw-r--r--Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.tex327
2 files changed, 327 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.pdf b/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.pdf
new file mode 100644
index 00000000000..b14bdf4702a
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.pdf
Binary files differ
diff --git a/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.tex b/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.tex
new file mode 100644
index 00000000000..9133db2476e
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/wrapfig/wrapfig-doc.tex
@@ -0,0 +1,327 @@
+\documentclass[pagesize=auto]{scrartcl}
+
+\usepackage{fixltx2e}
+\usepackage{etex}
+\usepackage{lmodern}
+\usepackage[T1]{fontenc}
+\usepackage{textcomp}
+\usepackage{amstext}
+\usepackage{array}
+\usepackage{xcolor}
+\usepackage{tikz}
+\usepackage{microtype}
+\usepackage{hyperref}
+
+\newcommand*{\mail}[1]{\href{mailto:#1}{\texttt{#1}}}
+\newcommand*{\pkg}[1]{\textsf{#1}}
+\newcommand*{\cls}[1]{\textsf{#1}}
+\newcommand*{\cs}[1]{\texttt{\textbackslash#1}}
+\makeatletter
+\newcommand*{\cmd}[1]{\cs{\expandafter\@gobble\string#1}}
+\makeatother
+\newcommand*{\env}[1]{\texttt{#1}}
+\newcommand*{\opt}[1]{\texttt{#1}}
+\newcommand*{\meta}[1]{\textlangle\textsl{#1}\textrangle}
+\newcommand*{\marg}[1]{\texttt{\{}\meta{#1}\texttt{\}}}
+\newcommand*{\oarg}[1]{\texttt{[}\meta{#1}\texttt{]}}
+
+\addtokomafont{title}{\rmfamily}
+
+\title{The \pkg{wrapfig} package\thanks{This manual corresponds to \pkg{wrapfig.sty}~v3.6, dated~Jan 31, 2003.}}
+\author{Donald Arseneau\thanks{\mail{asnd@triumf.ca}}}
+\date{Jan 31, 2003}
+
+
+\begin{document}
+
+\maketitle
+
+\noindent
+\pkg{Wrapfig.sty} provides the environments \env{wrapfigure} and \env{wraptable} for
+typesetting a narrow float at the edge of the text, and making the text
+wrap around it. The \env{wrapfigure} and \env{wraptable} environments interact
+properly with the \cmd{\caption} command to produce proper numbering, but
+they are not regular floats like \env{figure} and \env{table}, so (beware!) they
+may be printed out of sequence with the regular floats. There are four
+parameters for \verb+\begin{wrapfigure}+, two optional and two required, plus
+the text of the figure, with a caption perhaps:
+%
+\begin{quote}
+ \verb+\begin{wrapfigure}[12]{r}[34pt]{5cm}+ \meta{figure} \verb+\end{wrapfigure}+\\
+ \begin{tikzpicture}
+ \node (number) at (0mm, 0mm) {\oarg{number of narrow lines}};
+ \node (placement) at (36mm, 0mm) {\marg{placement}};
+ \node (overhang) at (60mm, 0mm) {\oarg{overhang}};
+ \node (width) at (81mm, 0mm) {\marg{width}};
+ \begin{scope}[->]
+ \draw (number) -- (16mm, 17mm);
+ \draw (placement) -- (24mm, 17mm);
+ \draw (overhang) -- (35mm, 17mm);
+ \draw (width) -- (47mm, 17mm);
+ \end{scope}
+ \end{tikzpicture}
+\end{quote}
+
+
+Some idiosyncrasies:
+%
+\begin{itemize}
+\item You must not specify a \env{wrapfigure} in any type of list environment or
+ or immediately before or immediately after one. It is OK to follow
+ a list if there is a blank line (\cs{par}) in between.
+
+\item If you put a \env{wrapfigure} in a \env{parbox} or a \env{minipage}, or any other type
+ of grouping, the text wrapping should end before the group does.
+
+\item It does work in two-column format, but are your figures that small?
+
+\item It may be out of sequence with regular floats.
+
+\item The hlines that may be printed above and below floats are ignored;
+ you must insert them manually if desired.
+
+\item \cmd{\linewidth} is now adjusted within the wrapped text, but since it
+ can only be set for whole paragraphs at a time, it will persist with
+ the wrong value after the wrapping, until the paragraph is finished.
+\end{itemize}
+
+New wrapping environments may be added when new float types are defined
+(using \cls{memoir.cls}, \pkg{float.sty}, or \pkg{ccaption.sty}). Any wrapping environment,
+\env{wrapfigure}, \env{wraptable}, or something else may be invoked using the
+\env{wrapfloat} environment, as in \verb+\begin{wrapfloat}{figure}{O}{5cm}+.
+
+To use \pkg{float.sty} properly, load package \pkg{float} before \pkg{wrapfig},
+and declare any new float types after loading both. Likewise for
+\pkg{ccaption.sty} and \cmd{\newfloatlist} and \pkg{memoir.cls} and its \cmd{\newfloat}.
+
+
+\section{Placement and Floating}
+
+Parameter \verb+#2+ (required) is the figure placement code, but the valid
+codes are different from regular figures. They come in pairs: an
+uppercase version which allows the figure to float, and a lowercase
+version that puts the figure ``exactly here''.
+%
+\begin{quote}
+ \begin{tabular}{*{2}{>{\ttfamily}l}!{--}l}
+ r & R & the right side of the text \\
+ l & L & the left side of the text \\
+ i & I & the inside edge--near the binding (if \opt{[twoside]} document) \\
+ o & O & the outside edge--far from the binding
+ \end{tabular}
+\end{quote}
+%
+You should specify one code only, not a list. The figure or table must
+be on one side or the other; it cannot be in the middle with text on
+both sides. The \texttt{i} and \texttt{o} options refer to the inside and outside of
+the whole page, not individual columns.
+
+The ability to float is somewhat restricted, and you will get best results
+by giving exact manual placement, but floating is more convenient while
+revising the document. Any changes to the formatting can ruin your manual
+positioning so you should adjust the placement just before printing a
+final copy. Here are some tips for good placement:
+%
+\begin{itemize}
+\item The environment should be placed so as to not run over a page break.
+
+\item The environment must not be placed in special places like lists.
+
+\item For esthetic reasons, only plain text should wrap around the figure.
+ Section titles and big equations look bad; lists are bad if the figure
+ is on the left. (All these function properly, they just don't look
+ very good.) Small equations look fine.
+
+\item It is convenient to begin the environment between paragraphs, but if
+ you want placement in the middle of a paragraph, you must put the
+ environment between two words where there is a natural line break.
+\end{itemize}
+
+When floating, \LaTeX\ tries to apply these rules. More specifically,
+a floated wrapping environment will only begin\dots
+%
+\begin{itemize}
+\item at the beginning of a paragraph,
+
+\item when there is enough room on the page, or it is possible to go on
+ the next page,
+
+\item if the `paragraph' is not in a section title or a list,
+
+\item if the paragraph is not wrapping around another figure,
+
+\item in the main text (not in a \env{minipage} etc.)
+\end{itemize}
+
+It is possible that a non-floating \env{wrapfigure} will be forced to float
+when an earlier one is still being processed. A warning will be written
+in that case. You can have more information about the floating process
+written to the log file by specifying \verb+\usepackage[verbose]{wrapfig}+.
+
+If there is a lot of flexibility on a page, a floating \env{wrapfigure} may
+be placed badly; you must turn to manual placement. A rare problem is
+that floats and footnotes specified within the wrapping text can also
+cause poor placement and bad formatting.
+
+
+\section{Sizing and optional overhang}
+
+Parameter \verb+#4+ (the second required parameter) is the width of the figure
+or table. Given the way that \LaTeX\ puts just about everything into boxes
+with the current line-width, the width parameter will take precedence over
+whatever natural width the figure has. In particular, the caption is always
+typeset with the specified width. If the figure is wider than the space
+allotted, you will get an ``overfull box'' warning.
+
+However, if you specify a width of \emph{zero} (\texttt{0pt}), the actual width of
+the figure will determine the wrapping width. A following \cmd{\caption}
+should have the same width as the figure, but it might fail badly; it
+is safer to specify a width when you use a caption.
+
+\LaTeX\ will wrap surrounding text around the figure, leaving a gap of
+\cmd{\intextsep} at the top and bottom, and \cmd{\columsep} at the side, by
+producing a series of shortened text lines beside the figure. The
+indentation (shortening) of the text is the figure width plus \cmd{\columnsep}
+minus overhang (if any; see below).
+
+\LaTeX\ calculates the number of short lines needed based on the height
+of the figure and the length \cmd{\intextsep}. You can override this guess
+by giving the first optional argument (parameter \verb+#1+) specifying the
+number of shortened lines (counting each displayed equation as 3~lines).
+This is particularly useful when the surrounding text contains extra
+vertical spacing that is not accounted for automatically.
+
+The second optional parameter (\verb+#3+) tells how much the figure should
+hang out into the margin. The default overhang is given by the length
+\cmd{\wrapoverhang}, which is \texttt{0pt} normally but can be changed using
+\cmd{\setlength}. For example, to have all wrapfigures use the space
+reserved for marginal notes,
+%
+\begin{verbatim}
+ \setlength{\wrapoverhang}{\marginparwidth}
+ \addtolength{\wrapoverhang}{\marginparsep}
+\end{verbatim}
+
+When you do specify the overhang explicitly for a particular figure, you
+can use a special unit called \cmd{\width} meaning the width of the figure.
+For example, \verb+[0.5\width]+ makes the center of the figure sit on the
+edge of the text, and \verb+[\width]+ puts the figure entirely in the margin
+(and the adjacent text is indented by just \cmd{\columnsep}). This \cmd{\width}
+is the actual width of the \env{wrapfigure}, which may be greater than the
+declared width.
+
+
+\section{Some Random Implementation Notes}
+
+Unfortunately, \LaTeX's system of setting \cmd{\everypar} and \cs{par} is
+unable to coexist peacefully with a wrapping environment, so I was
+forced to subvert the \cmd{\@setpar} mechanism and \cmd{\everypar}. (\cmd{\everypar}
+is already subverted once by NFSS.)
+
+When checking the room left on the page, remember that if there is less
+than \cmd{\baselineskip} the new paragraph will begin on the next page, even
+if there is no page stretch. If non-floating, I force a bad page break
+rather than have the figure hang into the bottom margin.
+
+Here are notes on various variables and some macros; what info they
+store and how they are used.
+%
+\begin{description}
+\item[\cmd{\WF@wli}] number-of-wrapped-lines parameter, saved for start of wrapping.
+ Set globally by \cmd{\WF@wr} (set empty if no optional parameter given).
+ The floating mechanism ignores this and uses the real size.
+
+\item[\cmd{\WF@ovh}] margin overhang set globally by \cmd{\WF@rapt}, saved until placing
+ figure (but not reset). Actually, the setting is very tricky so that
+ the expected values are used when a figure floats. First, the expression
+ is saved without evaluation by \cmd{\WF@rapt} (\verb+\begin{wrapfigure}+) because
+ \cmd{\width} is still unknown. Soon after that, \cmd{\endwrapfigure} executes
+ \cmd{\WF@ovh} to evaluate the overhang and save the result (so that changes
+ to \cmd{\wrapoverhang} while this figure is floating won't affect this
+ figure). Finally, it is used by \cmd{\WF@putfigmaybe} when printing the fig.
+
+\item[\cmd{\WF@place}] a macro that is used as a number, giving the placement code.
+ It might start out as \texttt{\textasciigrave I} and later be converted to \texttt{114} (r).
+
+\item[\cmd{\WF@box}] tested for void at \verb+\begin{wrapfigure}+, to avoid collisions, % \end{wrapfigure}
+ by \cmd{\everypar} to do floating, and by \cmd{\WF@finale} before resetting
+ \cmd{\everypar}. Voided globally when used by \cmd{\WF@putfigmaybe} (or by
+ \cmd{\WF@wr} if an old figure must be dumped prematurely).
+
+\item[\cs{par}] test if it is \cmd{\@@par} by \verb+\begin{wrapfigure}+ and \cmd{\WF@floathand} % \end{wrapfigure}
+ to float past special environments. It is set to \cmd{\@par} (\cmd{\WF@mypar})
+ by \cmd{\WF@startwrapping}, and restored by an end-group (bad!)\ or by
+ \cmd{\WF@finale} (good). It is protected from change by redefining
+ \cmd{\@setpar}.
+
+\item[\cmd{\parshape}] let to \cmd{\WF@fudgeparshape} by \cmd{\WF@startwrapping}, so lists
+ will continue wrapping; \cmd{\@@parshape} preserves the real \cmd{\parshape}
+ command, and it is restored by \cmd{\WF@finale} or \cmd{\@parboxrestore}.
+ \cmd{\WF@floathand} and \cmd{\WF@wr} test if old wrapping is still in progress
+ with \verb+\ifx\parshape\WF@fudgeparshape+. The value of \cmd{\@@parshape} is
+ also tested to float past lists and other wrapping environments.
+
+\item[\cmd{\hangindent}] tested to float past section titles etc.
+
+\item[\cmd{\c@WF@wrappedlines}] $\text{the number of shortened lines} + 1$; set globally by
+ \cmd{\WF@start\-wrapping} and decremented by \cs{par} (\cmd{\WF@mypar}). It is $> 1$
+ only when wrapping is incomplete. \cmd{\WF@wraphand}, \cmd{\WF@fudgeparshape},
+ and \cmd{\WF@mypar} test the number for calling \cmd{\WF@finale}. It may get
+ stuck at some high value if \cs{par} is restored by an end-group, (and
+ wrapping is terminated prematurely) so it is unwise to use this as a
+ test for wrapping-complete.
+
+\item[\cmd{\pagetotal}] one of many parameters used to compute floating. When
+ putting a \env{wrapfigure} in a \env{parbox}, I assign \verb+\let\pagetotal\maxdimen+
+ (locally!)\ to signal not-top-of-page and no floating.
+
+\item[\cmd{\WF@pspars}] the \cmd{\parshape} parameters as \LaTeX\ sets them for lists
+ (\cmd{\WF@fudgepar\-shape}); when wrapping I test it and use it to modify my
+ own real params for the paragraph. They are also used when \cmd{\parshape}
+ is restored after wrapping.
+
+\item[\cmd{\WF@finale}] is performed by \cs{par} when wrapping should end. However,
+ that might happen inside a group (a list especially), so the subverted
+ versions of \cs{par}, \cmd{\parshape} etc. will be reinstated when the group
+ ends. Thus, they must themselves test $\text{\cmd{\c@WF@wrappedlines}} < 2$ to see
+ when wrapping is over, and if so, they should just do \cmd{\WF@finale} again.
+\end{description}
+
+These are the tests to see if a floating \env{wrapfigure} will fit at a particular
+spot. These tests are performed at the beginning of every paragraph after
+the figure, except in lists etc. ($\text{\cmd{\pagegoal}} - \text{\cmd{\pagetotal}}$ is the room
+left on the page.)
+%
+\begin{verbatim}
+ >
+ room_left := \pagegoal - \pagetotal
+ if room_left < 0 then page overfull already:
+ put figure (on next page)
+ else
+ if figure_size > room_left then does not fit
+ if max(min_stretch, \pagestretch) + extra > room_left
+ then page can stretch until full:
+ put figure (at top of next page)
+ fi
+ else figure fits: put figure
+ fi fi
+ <
+\end{verbatim}
+
+Even if a \env{wrapfigure} is not floating, it will go through the same logic
+to generate a \cmd{\pagebreak}, and maybe an underfull page, when the current
+page can stretch until full. The \texttt{min\_stretch} depends on whether it is
+floating or not: \verb+.5\baselineskip+ (floating) \verb+2\baselineskip+ (not). The
+\texttt{extra} is \verb+.5\baselineskip+ in either case. These values can be adjusted.
+
+There are some other `magic numbers' for floating that aren't really so
+special, but you must change them together if you change them at all.
+To make floating wrapfigures float less and fit on pages more frequently,
+but not change the number of wrapped lines, decrease the \texttt{1.5} in
+\verb+\global\advance\WF@size1.5\baselineskip+ and increase the \texttt{1.1} in
+\verb+\advance\WF@size1.1\baselineskip+ by the same amount (and vice versa).
+To make more (or fewer) wrapped lines for the same size figure, without
+changing the floating, change \texttt{1.1} in \verb+\advance\WF@size1.1\baselineskip+
+unilaterally.
+
+\end{document}