From e19245a4500a3577f89f2f427448faa35de2e795 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Tue, 2 Mar 2010 01:04:44 +0000 Subject: framed doc update, own package (1mar10) git-svn-id: svn://tug.org/texlive/trunk@17274 c570f23f-e606-0410-a88d-b1316a301751 --- Master/texmf-dist/tex/latex/framed/framed.sty | 352 ++++++++++++++++++++++++++ 1 file changed, 352 insertions(+) create mode 100644 Master/texmf-dist/tex/latex/framed/framed.sty (limited to 'Master/texmf-dist/tex/latex/framed') diff --git a/Master/texmf-dist/tex/latex/framed/framed.sty b/Master/texmf-dist/tex/latex/framed/framed.sty new file mode 100644 index 00000000000..82081cee07b --- /dev/null +++ b/Master/texmf-dist/tex/latex/framed/framed.sty @@ -0,0 +1,352 @@ +% framed.sty v 0.95 2007/10/04 +% Copyright (C) 1992-2007 by Donald Arseneau (asnd@triumf.ca) +% These macros may be freely transmitted, reproduced, or modified +% provided that this notice is left intact. +% +%====================== Begin Instructions ======================= +% +% framed.sty +% ~~~~~~~~~~ +% Create framed, shaded, or differently highlighted regions that can +% break across pages. The environments defined are +% framed -- ordinary frame box (\fbox) with edge at margin +% shaded -- shaded background (\colorbox) bleeding into margin +% snugshade -- similar +% leftbar -- thick vertical line in left margin +% to be used like +% \begin{framed} +% copious text +% \end{framed} +% +% But the more general purpose of this package is to facilitate the +% creation of environments that enable page breaking +% within arbitrary decorations using a simple new-environment definition +% incorporating \FrameCommand and +% \begin{MakeFramed}{settings} ... \end{MakeFramed} +% +% The "framed" environment uses "\fbox" as its "\FrameCommand" with +% the additional settings \fboxrule=\FrameRule and \fboxsep=\FrameSep. +% You can change these lengths (using \setlength) and you can change +% the definition of \FrameCommand to use much fancier boxes. +% +% In fact, the "shaded" environment just redefines \FrameCommand to be +% \colorbox{shadecolor} (and you have to define the color "shadecolor": +% \definecolor{shadecolor}...). +% +% A page break is allowed, and even encouraged, before the framed +% environment. If you want to attach some text (a box title) to the +% frame, then the text should be inserted by \FrameCommand. +% +% The contents of the framed regions are restricted: +% Floats, footnotes, marginpars and head-line entries will be lost. +% (Some of these may be handled in a later version.) +% This package will not work with the page breaking of multicol.sty, +% or other systems that perform column-balancing. +% +% The MakeFramed environment does the work. Its "settings" argument +% should contain any adjustments to the text width (applied to \hsize, +% and using the "\width" of the frame itself) as well as a "restore" +% command -- \@parboxrestore or \FrameRestore or something similar; +% as an example, the snugshade environment shows how to suppress excess +% spacing within the box, copying the code from minipage. +% +% Expert commands: +% \MakeFramed, \endMakeFramed: the "MakeFramed" environment +% \FrameCommand: command to draw the frame around its argument +% \FrameRestore: restore some text settings, but fewer than \@parboxrestore +% \FrameRule: length register; \fboxrule for default "framed". +% \FrameSep: length register; \fboxsep for default "framed". +% \FrameHeightAdjust: macro; height of frame above baseline at top of page +% +% This is still a `pre-production' version because I can think of many +% features/improvements that should be made. Nevertheless, starting +% with version 0.5 it should be bug-free. +% +% ToDo: +% Test more varieties of list +% Improve and correct documentation +% Propagation of \marks +% Handle footnotes (how??) floats (?) and marginpars. +% Stretchability modification. +%======================== End Instructions ======================== + +\ProvidesPackage{framed}[2007/10/04 v 0.95: + framed or shaded text with page breaks] + +\newenvironment{framed}% using default \FrameCommand + {\MakeFramed {\advance\hsize-\width \FrameRestore}}% + {\endMakeFramed} + +\newenvironment{shaded}{% + \def\FrameCommand{\fboxsep=\FrameSep \colorbox{shadecolor}}% + \MakeFramed {\FrameRestore}}% + {\endMakeFramed} + +\newenvironment{leftbar}{% + \def\FrameCommand{\vrule width 3pt \hspace{10pt}}% + \MakeFramed {\advance\hsize-\width \FrameRestore}}% + {\endMakeFramed} + +\newenvironment{snugshade}{% + \def\FrameCommand{\colorbox{shadecolor}}% + \MakeFramed {\FrameRestore\@setminipage}}% + {\par\unskip\endMakeFramed} + +\chardef\FrameRestore=\catcode`\| % for debug +\catcode`\|=\catcode`\% % (debug: insert space after backslash) + +\def\MakeFramed#1{\par + % measure added width and height; call result \width and \height + \fb@sizeofframe\FrameCommand + \let\width\fb@frw \let\height\fb@frh + % insert pre-penalties and skips + \begingroup + \skip@\lastskip + \if@nobreak\else + \penalty9999 % updates \page parameters + \ifdim\pagefilstretch=\z@ \ifdim\pagefillstretch=\z@ + % not infinitely stretchable, so encourage a page break here + \edef\@tempa{\the\skip@}% + \ifx\@tempa\zero@glue \penalty-30 + \else \vskip-\skip@ \penalty-30 \vskip\skip@ + \fi\fi\fi + \penalty\z@ + % Give a stretchy breakpoint that will always be taken in preference + % to the \penalty 9999 used to update page parameters. The cube root + % of 10000/100 indicates a multiplier of 0.21545, but the maximum + % calculated badness is really 8192, not 10000, so the multiplier + % is 0.2301. + \advance\skip@ \z@ plus-.5\baselineskip + \advance\skip@ \z@ plus-.231\height + \advance\skip@ \z@ plus-.231\skip@ + \advance\skip@ \z@ plus-.231\topsep + \vskip-\skip@ \penalty 1800 \vskip\skip@ + \fi + \addvspace{\topsep}% + \endgroup + % clear out pending page break + \penalty\@M \vskip 2\baselineskip \vskip\height + \penalty9999 \vskip -2\baselineskip \vskip-\height + \penalty9999 % updates \pagetotal +|\message{After clearout, \pagetotal=\the\pagetotal, \pagegoal=\the\pagegoal. }% + \fb@adjheight + \setbox\@tempboxa\vbox\bgroup + #1% Modifications to \hsize (can use \width and \height) + \textwidth\hsize \columnwidth\hsize +} + +\def\endMakeFramed{\par + \kern\z@ + \hrule\@width\hsize\@height\z@ + \penalty-100 % put depth into height + \egroup + % {\showoutput\showbox\@tempboxa}% + \begingroup + \fb@put@frame\FrameCommand\FirstFrameCommand + \endgroup +} + +% \fb@put@frame takes the contents of \@tempboxa and puts all, or a piece, +% of it on the page with a frame (\FrameCommand, \FirstFrameCommand, +% \MidFrameCommand, or \LastFrameCommand). It recurses until all of +% \@tempboxa has been used up. (\@tempboxa must have zero depth.) +% #1 = attempted framing command, if no split +% #2 = framing command if split +% First iteration: Try to fit with \FrameCommand. If it does not fit, +% split for \FirstFrameCommand. +% Later iteration: Try to fit with \LastFrameCommand. If it does not +% fit, split for \MidFrameCommand. +\def\fb@put@frame#1#2{\relax + \ifdim\pagegoal=\maxdimen \pagegoal\vsize \fi +| \message{=============== Entering putframe ====================^^J +| \pagegoal=\the\pagegoal, \pagetotal=\the\pagetotal. }% + \ifinner + \fb@putboxa#1% + \fb@afterframe + \else + \dimen@\pagegoal \advance\dimen@-\pagetotal % natural space left on page + \ifdim\dimen@<2\baselineskip % Too little room on page +| \message{Page has only \the\dimen@\space room left; eject. }% + \eject \fb@adjheight \fb@put@frame#1#2% + \else % there's appreciable room left on the page + \fb@sizeofframe#1% +| \message{\string\pagetotal=\the\pagetotal, +| \string\pagegoal=\the\pagegoal, +| \string\pagestretch=\the\pagestretch, +| \string\pageshrink=\the\pageshrink, +| \string\fb@frh=\fb@frh. \space} +| \message{Box of size \the\ht\@tempboxa\space + \fb@frh}% + \begingroup % temporarily set \dimen@ to be... + \advance\dimen@.8\pageshrink % maximum space available on page + \advance\dimen@-\fb@frh\relax % space available for frame's contents + \expandafter\endgroup + % expand \ifdim, then restore \dimen@ to real room left on page + \ifdim\dimen@>\ht\@tempboxa % whole box does fit +| \message{fits in \the\dimen@. }% + % Use vsplit anyway to capture the marks + % !!!???!!! MERGE THIS WITH THE else CLAUSE!!! + \fb@putboxa#1% + \fb@afterframe + \else % box must be split +| \message{must be split to fit in \the\dimen@. }% + % update frame measurement to use \FirstFrameCommand or \MidFrameCommand + \fb@sizeofframe#2% + \setbox\@tempboxa\vbox{% simulate frame and flexiblity of the page: + \vskip \fb@frh \@plus\pagestretch \@minus.8\pageshrink + \kern137sp\kern-137sp\penalty-30 + \unvbox\@tempboxa}% + \edef\fb@resto@set{\boxmaxdepth\the\boxmaxdepth + \splittopskip\the\splittopskip}% + \boxmaxdepth\z@ \splittopskip\z@ +| \message{Padded box of size \the\ht\@tempboxa\space split to \the\dimen@}% + % Split box here + \setbox\tw@\vsplit\@tempboxa to\dimen@ +| \toks99\expandafter{\splitfirstmark}% +| \toks98\expandafter{\splitbotmark}% +| \message{Marks are: \the\toks99, \the\toks98. }% + \setbox\tw@\vbox{\unvbox\tw@}% natural-sized +| \message{Natural height of split box is \the\ht\tw@, leaving +| \the\ht\@tempboxa\space remainder. }% + % If the split-to size > (\vsize-\topskip), then set box to full size + \begingroup + \advance\dimen@\topskip + \expandafter\endgroup + \ifdim\dimen@>\pagegoal +| \message{Frame is big -- Use up the full column. }% + \dimen@ii\pagegoal + \advance\dimen@ii -\topskip + \advance\dimen@ii \FrameHeightAdjust\relax + \else % suspect this is wrong: + % If the split-to size > feasible room_on_page, rebox it smaller. + \advance\dimen@.8\pageshrink + \ifdim\ht\tw@>\dimen@ +| \message{Box too tall; rebox it to \the\dimen@. }% + \dimen@ii\dimen@ + \else % use natural size + \dimen@ii\ht\tw@ + \fi + \fi + % Re-box contents to desired size \dimen@ii + \advance\dimen@ii -\fb@frh + \setbox\tw@\vbox to\dimen@ii \bgroup + % remove simulated frame and page flexibility: + \vskip -\fb@frh \@plus-\pagestretch \@minus-.8\pageshrink + \unvbox\tw@ \unpenalty\unpenalty + \ifdim\lastkern=-137sp % whole box went to next page +| \message{box split at beginning! }% + % need work here??? + \egroup \fb@resto@set \eject % (\vskip for frame size was discarded) + \fb@adjheight + \fb@put@frame#1#2% INSERTED ??? + \else % Got material split off at the head + \egroup \fb@resto@set + \ifvoid\@tempboxa % it all fit after all +| \message{box split at end! }% + \setbox\@tempboxa\box\tw@ + \fb@putboxa#1% + \fb@afterframe + \else % it really did split +| \message{box split as expected. Its reboxed height is \the\ht\tw@. }% + \ifdim\wd\tw@>\z@ + \wd\tw@\wd\@tempboxa + \centerline{#2{\box\tw@}}% ??? \centerline bad idea + \else +| \message{Zero width means likely blank. Don't frame it (guess)}% + \box\tw@ + \fi + \hrule \@height\z@ \@width\hsize + \eject + \fb@adjheight + \fb@put@frame\LastFrameCommand\MidFrameCommand + \fi\fi\fi\fi\fi +} + +\def\fb@putboxa#1{% + \ifvoid\@tempboxa + PackageWarning{framed}{Boxa is void -- discard it. }% + \else +| \message{Frame and place boxa. }% +| %{\showoutput\showbox\@tempboxa}% + \centerline{#1{\box\@tempboxa}}% + \fi +} + +\def\fb@afterframe{% + \nointerlineskip \null %{\showoutput \showlists} + \penalty-30 \vskip\topsep \relax +} + +% measure width and height added by frame (#1 = frame command) +% call results \fb@frw and \fb@frh +\newdimen\fb@frw +\newdimen\fb@frh +\def\fb@sizeofframe#1{\begingroup + \setbox\z@\vbox{\vskip-5in \hbox{\hskip-5in + #1{\hbox{\vrule \@height 4.7in \@depth.3in \@width 5in}}}% + \vskip\z@skip}% +| \message{Measuring frame addition for \string#1 in \@currenvir\space +| gives ht \the\ht\z@\space and wd \the\wd\z@. }% +%{\showoutput\showbox\z@}% + \global\fb@frw\wd\z@ \global\fb@frh\ht\z@ + \endgroup +} + +\def\fb@adjheight{% + \vbox to\FrameHeightAdjust{}% get proper baseline skip from above. + \penalty\@M \nointerlineskip + \vskip-\FrameHeightAdjust + \penalty\@M} % useful for tops of pages + +\edef\zero@glue{\the\z@skip} + +\catcode`\|=\FrameRestore + +% Provide configuration commands: +\providecommand\FrameCommand{% + \setlength\fboxrule{\FrameRule}\setlength\fboxsep{\FrameSep}% + \fbox} +\@ifundefined{FrameRule}{\newdimen\FrameRule \FrameRule=\fboxrule}{} +\@ifundefined{FrameSep} {\newdimen\FrameSep \FrameSep =3\fboxsep}{} +\providecommand\FirstFrameCommand{\FrameCommand} +\providecommand\MidFrameCommand{\FrameCommand} +\providecommand\LastFrameCommand{\FrameCommand} + +% Height of frame above first baseline when frame starts a page: +\providecommand\FrameHeightAdjust{6pt} + +% \FrameRestore has parts of \@parboxrestore, performing a similar but +% less complete restoration of a default layouy. See how it is used in the +% "settings" argument of \MakeFrame. Though not a parameter, \hsize +% should be set to the desired total line width available inside the +% frame before invoking \FrameRestore. +\def\FrameRestore{% + \let\if@nobreak\iffalse + \let\if@noskipsec\iffalse + \let\-\@dischyph + \let\'\@acci\let\`\@accii\let\=\@acciii + % \message{FrameRestore: + % \@totalleftmargin=\the \@totalleftmargin, + % \rightmargin=\the\rightmargin, + % \@listdepth=\the\@listdepth. }% + % Test if we are in a list (or list-like paragraph) + \ifnum \ifdim\@totalleftmargin>\z@ 1\fi + \ifdim\rightmargin>\z@ 1\fi + \ifnum\@listdepth>0 1\fi 0>\z@ + % \message{In a list: \linewidth=\the\linewidth, \@totalleftmargin=\the\@totalleftmargin, + % \parshape=\the\parshape, \columnwidth=\the\columnwidth, \hsize=\the\hsize, + % \labelwidth=\the\labelwidth. }% + \@setminipage % snug fit around the item + % Now try to propageate changes of width from \hsize to list parameters. + % This is deficient, but a more advanced way to indicate modification to text + % dimensions is not (yet) provided; in particular, no separate left/right + % adjustment. + \advance\linewidth-\columnwidth \advance\linewidth\hsize + \parshape\@ne \@totalleftmargin \linewidth + \else % Not in list + \linewidth=\hsize + %\message{No list, set \string\linewidth=\the\hsize. }% + \fi + \sloppy +} + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -- cgit v1.2.3