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%D \module
%D [ file=pack-rul, % was core-rul,
%D version=1998.10.16,
%D title=\CONTEXT\ Packaging Macros,
%D subtitle=Ruled Content,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Packaging Macros / Ruled Content}
%D The code here is expanded lots of time as framed is used in many places. This is
%D why the code here is (and gets) optimized as much as possible. Also, by avoiding
%D packaging and expansion we also keep tracing reasonable. For instance, multiple
%D stacked backgrounds can slow down a run if not optimized this way.
\registerctxluafile{pack-rul}{1.001}
\unprotect
\definesystemvariable {ol} % OmLijnd -> check scrn-fld too
%D \macros
%D {linewidth, setuplinewidth}
%D
%D This module deals with rules (lines) in several ways. First we introduce two
%D macros that can be used to set some common characteristics.
%D
%D \showsetup{setuplinewidth}
%D
%D The linewidth is available in \type{\linewidth}. The preset value of .4pt equals
%D the default hard coded \TEX\ rule width.
\newdimen\linewidth
\unexpanded\def\setuplinewidth
{\dosingleargument\pack_framed_setup_line_width}
\def\pack_framed_setup_line_width[#1]%
{\assigndimension{#1}\linewidth{.2\points}{.4\points}{.6\points}}
%D \macros
%D {setupscreens}
%D
%D Sort of obsolete:
%D
%D \showsetup{setupscreens}
\installcorenamespace{screens}
\installsetuponlycommandhandler \??screens {screens}
\appendtoks
\edef\defaultbackgroundscreen{\directscreensparameter\c!screen}
\to \everysetupscreens
\setupscreens
[\c!screen=.90] % was .95 but that's hardly visible
%D The parameter handler:
\installcorenamespace{framed}
\installcorenamespace{framedtop}
\installcorenamespace{framedbottom}
\installcorenamespace{framedleft}
\installcorenamespace{framedright}
\installcorenamespace{regularframed}
\installcorenamespace{simplifiedframed}
\installcommandhandler \??framed {framed} \??framed
\let\pack_framed_framedparameter \framedparameter
\let\pack_framed_framedparameterhash\framedparameterhash
\let\pack_framed_setupcurrentframed \setupcurrentframed
\def\pack_framed_initialize
{\let\framedparameter \pack_framed_framedparameter
\let\framedparameterhash\pack_framed_framedparameterhash
\let\setupcurrentframed \pack_framed_setupcurrentframed
\inframedtrue}
%D A helper:
\def\frameddimension#1{\the\dimexpr\framedparameter{#1}\relax}
%D Inheritance:
\def\installinheritedframed#1%
{\normalexpanded{\doinstallinheritedframed
\expandafter\noexpand\csname current#1\endcsname
\expandafter\noexpand\csname #1parameter\endcsname
\expandafter\noexpand\csname #1parameterhash\endcsname
\expandafter\noexpand\csname do#1parameter\endcsname
\expandafter\noexpand\csname do#1parentparameter\endcsname
\expandafter\noexpand\csname do#1rootparameter\endcsname
\expandafter\noexpand\csname setupcurrent#1\endcsname
\expandafter\noexpand\csname inherited#1framed\endcsname
\noexpand\??framed}} % if needed we can have a variant
\unexpanded\def\doinstallinheritedframed#1#2#3#4#5#6#7#8#9%
{\def#5##1##2{\ifx##1\relax#6{##2}\else#4{##1}{##2}\fi}%
\def#6##1{\ifcsname#9:##1\endcsname#9:##1\else\s!empty\fi}% root
\unexpanded\def#8%
{\bgroup
\bgroup
\inframedtrue
\let\currentframed #1%
\let\framedparameter #2%
\let\framedparameterhash#3%
\let\setupcurrentframed #7%
\pack_framed_process_indeed}}
\unexpanded\def\installframedcommandhandler#1#2#3%
{\installcommandhandler{#1}{#2}{#3}%
\installinheritedframed{#2}}
\unexpanded\def\installframedautocommandhandler#1#2#3%
{\installautocommandhandler{#1}{#2}{#3}%
\installinheritedframed{#2}}
\unexpanded\def\installsimpleframedcommandhandler#1#2#3%
{\installsimplecommandhandler{#1}{#2}{#3}%
\installinheritedframed{#2}}
% for regular framed
\setupframed
[\c!width=\v!fit,
\c!height=\v!broad,
%\c!lines=,
\c!offset=.25ex, % \defaultframeoffset
\c!empty=\v!no,
\c!frame=\v!on,
%\c!topframe=,
%\c!bottomframe=,
%\c!leftframe=,
%\c!rightframe=,
\c!radius=.5\bodyfontsize,
\c!rulethickness=\linewidth,
\c!corner=\v!rectangular,
\c!depth=\zeropoint,
%\c!foregroundcolor=,
%\c!foregroundstyle=,
%\c!background=,
%\c!backgroundscreen=,
\c!backgroundscreen=\defaultbackgroundscreen,
%\c!backgroundcolor=,
\c!backgroundoffset=\zeropoint,
%\c!framecolor=,
\c!frameoffset=\zeropoint,
\c!backgroundcorner=\framedparameter\c!corner, % use \p_ here
\c!backgroundradius=\framedparameter\c!radius,
\c!backgrounddepth=\framedparameter\c!depth,
\c!framecorner=\framedparameter\c!corner,
\c!frameradius=\framedparameter\c!radius,
\c!framedepth=\framedparameter\c!depth,
%\c!component=,
%\c!region=,
%\c!align=,
\c!bottom=\vss,
%\c!top=,
\c!strut=\v!yes,
\c!autostrut=\v!yes,
\c!location=\v!normal,
%\c!orientation=,
\c!autowidth=\v!yes,
%\c!setups=
\c!loffset=\zeropoint,
\c!roffset=\zeropoint,
\c!toffset=\zeropoint,
\c!boffset=\zeropoint]
%D For backgrounds and such:
\defineframed
[\??simplifiedframed]
[\c!frame=\v!off,
\c!depth=\zeropoint,
\c!offset=\v!overlay,
\c!component=,
\c!region=,
\c!radius=.5\bodyfontsize,
\c!rulethickness=\linewidth,
\c!corner=\v!rectangular,
\c!backgroundoffset=\zeropoint,
\c!frameoffset=\zeropoint,
\c!backgroundcorner=\framedparameter\c!corner, % use \p_ here
\c!backgroundradius=\framedparameter\c!radius,
\c!backgrounddepth=\framedparameter\c!depth,
\c!framecorner=\framedparameter\c!corner,
\c!frameradius=\framedparameter\c!radius,
\c!framedepth=\framedparameter\c!depth,
\c!location=\v!normal,
\c!loffset=\zeropoint,
\c!roffset=\zeropoint,
\c!toffset=\zeropoint,
\c!boffset=\zeropoint]
\unexpanded\def\definesimplifiedframed[#1]% no settings
{\defineframed[#1][\??simplifiedframed]%
\expandafter\let\csname#1\endcsname\undefined}
\expandafter\let\csname\??simplifiedframed\endcsname\undefined
%D We will communicate through module specific variables, current framed
%D parameters and some reserved dimension registers.
\newdimen\d_framed_target_wd
\newdimen\d_framed_target_ht
\newdimen\d_framed_target_dp
\newdimen\d_framed_linewidth \let\ruledlinewidth\d_framed_linewidth % needed at lua end
\let\p_framed_frame \empty % \framedparameter\c!frame
\let\p_framed_backgroundoffset\empty
\let\p_framed_foregroundstyle \empty
\let\p_framed_autostrut \empty
\let\p_framed_location \empty
\let\p_framed_orientation \empty
\let\p_framed_autowidth \empty
\let\p_framed_franalyze \empty
\let\p_framed_backgroundcorner\empty
\let\p_framed_backgroundradius\empty
\let\p_framed_framecorner \empty
\let\p_framed_frameradius \empty
\let\p_framed_lines \empty
\let\p_framed_empty \empty
\let\p_framed_backgroundcolor \empty
\let\p_framed_backgroundscreen\empty
\let\p_framed_framecolor \empty
\let\p_framed_component \empty
\let\p_framed_region \empty
\let\p_framed_background \empty
\let\p_framed_rulethickness \empty
\let\p_framed_foregroundcolor \empty
\let\p_framed_setups \empty
%D We don't have to stick to a \TEX\ drawn rule, but also can use rounded
%D or even fancier shapes, as we will see later on.
\def\pack_framed_filled_box
{\edef\p_framed_backgroundcorner{\framedparameter\c!backgroundcorner}%
\ifx\p_framed_backgroundcorner\v!rectangular
\pack_framed_filled_box_normal
\else
\pack_framed_filled_box_radius
\fi}
\def\pack_framed_filled_box_normal
{\vrule
\s!width \d_framed_target_wd
\s!height\d_framed_target_ht
\s!depth \d_framed_target_dp
\relax}
\def\pack_framed_filled_box_radius
{\edef\p_framed_backgroundradius{\framedparameter\c!backgroundradius}%
\ifzeropt\dimexpr\p_framed_backgroundradius\relax % just in case of .x\bodyfontsize
\pack_framed_filled_box_normal
\else
\pack_framed_filled_box_round
\fi}
\def\pack_framed_filled_box_round
{\back_ovalbox
\d_framed_target_wd \d_framed_target_ht \d_framed_target_dp
\d_framed_linewidth \p_framed_backgroundradius
\zerocount \plusone {\ifx\p_framed_backgroundcorner\v!round0\else\number\p_framed_backgroundcorner\fi}}
\def\pack_framed_stroked_box
{\edef\p_framed_framecorner{\framedparameter\c!framecorner}%
\ifx\p_framed_framecorner\v!rectangular
\pack_framed_stroked_box_normal
\else
\pack_framed_stroked_box_radius
\fi}
\def\pack_framed_stroked_box_radius
{\edef\p_framed_frameradius{\framedparameter\c!frameradius}%
\ifzeropt\dimexpr\p_framed_frameradius\relax % just in case of .x\bodyfontsize
\pack_framed_stroked_box_normal
\else\ifx\p_framed_frame\v!on
\pack_framed_stroked_box_round
\fi\fi}
% \pack_framed_stroked_box_normal % later
\def\pack_framed_stroked_box_round
{\back_ovalbox
\d_framed_target_wd \d_framed_target_ht \d_framed_target_dp
\d_framed_linewidth \p_framed_frameradius
\plusone \zerocount {\ifx\p_framed_framecorner\v!round0\else\number\p_framed_framecorner\fi}}
% a lot of weird corners
%
% \startTEXpage
% \dontleavehmode\framed
% [corner=0,frame=on,framecolor=green,
% background=color,backgroundcolor=yellow]{\tttf TEST \twodigits\recurselevel}%
% \vskip1em
% \dontleavehmode\dostepwiserecurse {1} {4}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green,
% background=color,backgroundcolor=yellow]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse {5} {8}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green,
% background=color,backgroundcolor=yellow]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse {1} {4}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse {5} {8}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse {9}{12}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse{13}{16}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse{17}{20}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse{21}{24}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \vskip1em
% \dontleavehmode\dostepwiserecurse{25}{28}{1}{\framed
% [corner=\recurselevel,frame=on,framecolor=green]{\tttf TEST \twodigits\recurselevel}%
% \quad}
% \stopTEXpage
%D The oval box is drawn using a special macro, depending on
%D the driver in use.
\def\pack_framed_background_box_gray % avoid black rules when no gray
{\edef\p_framed_backgroundscreen{\framedparameter\c!backgroundscreen}%
\ifx\p_framed_backgroundscreen\empty \else
\pack_framed_background_box_gray_indeed
\fi}
\def\pack_framed_background_box_gray_indeed % can be more direct but who cares, just compatibility
{\colored[s=\p_framed_backgroundscreen]{\pack_framed_filled_box}}
%D It won't be a surprise that we not only provide gray boxes, but also colored
%D ones. Here it is:
\def\pack_framed_background_box_color
{\edef\p_framed_backgroundcolor{\framedparameter\c!backgroundcolor}%
\ifx\p_framed_backgroundcolor\empty \else
\doifcolor\p_framed_backgroundcolor\pack_framed_background_box_color_indeed
\fi}
\def\pack_framed_background_box_color_indeed
{\hbox{\dousecolorparameter\p_framed_backgroundcolor\pack_framed_filled_box}}
%D \macros
%D {defineoverlay, doifoverlayelse, overlayoffset,
%D overlaywidth, overlayheight, overlaydepth,
%D overlaycolor, overlaylinecolor, overlaylinewidth}
%D
%D Before we define the macro that actually takes card of the backgrounds, we
%D introduce overlays. An overlay is something that contrary to its name lays {\em
%D under} the text. An example of an overlay definition is:
%D
%D \startbuffer[tmp-1]
%D \defineoverlay
%D [fancy]
%D [{\externalfigure
%D [mp-cont.502]
%D [width=\overlaywidth,
%D height=\overlayheight]}]
%D \stopbuffer
%D
%D \typebuffer[tmp-1]
%D
%D That for instance can be uses in:
%D
%D \startbuffer[tmp-2]
%D \framed[backgroundachtergrond=fancy]{How Fancy!}
%D \framed[backgroundachtergrond=fancy,frame=off]{Even More Fancy!}
%D \stopbuffer
%D
%D and looks like:
%D
%D \startlinecorrection
%D \vbox{\baselineskip24pt\getbuffer[tmp-1]\getbuffer[tmp-2]}
%D \stoplinecorrection
%D
%D The formal definition is:
%D
%D \showsetup{defineoverlay}
%D
%D This macro's definition is a bit obscure, due the many non||used arguments and
%D the two step call that enable the setting of the width, height and depth
%D variables. Multiple backgrounds are possible and are specified as:
%D
%D \starttyping
%D \framed[background={one,two,three}]{Three backgrounds!}
%D \stoptyping
%D
%D Most drawing packages only know width and height. Therefore the dimensions have a
%D slightly different meaning here:
%D
%D \startitemize[packed]
%D \item \type{\overlaywidth }: width of the overlay
%D \item \type{\overlayheight}: height plus depth of the overlay
%D \item \type{\overlaydepth }: depth of the overlay
%D \stopitemize
%D
%D The resulting box is lowered to the right depth.
\def\overlaywidth {\the\hsize\space} % We preset the variables
\def\overlayheight {\the\vsize\space} % to some reasonable default
\def\overlaydepth {0pt } % values. The attributes
\let\overlayoffset \overlaydepth % of the frame can be (are)
\let\overlaylinewidth \overlaydepth % set somewhere else.
\let\overlaycolor \empty
\let\overlaylinecolor \empty
%D The next register is used to initialize overlays.
\newtoks\everyoverlay
%D An example of an initialization is the following (overlays can contain text
%D and be executed under an regime where interlineskip is off).
\installcorenamespace{overlay}
\installcorenamespace{overlaybuiltin}
\appendtoks
\oninterlineskip
\to \everyoverlay
\prependtoks
\hsize\overlaywidth
\vsize\overlayheight
\to \everyoverlay
\unexpanded\def\defineoverlay
{\dodoubleargument\pack_framed_define_overlay}
\def\pack_framed_define_overlay[#1][#2]%
{\def\pack_framed_define_overlay_indeed##1{\setvalue{\??overlay##1}{\executedefinedoverlay{##1}{#2}}}%
\processcommalist[#1]\pack_framed_define_overlay_indeed}
\unexpanded\def\executedefinedoverlay#1#2% we can share the definitions
{\bgroup % redundant grouping
\setbox\scratchbox\hbox\bgroup
\ifzeropt\d_framed_target_dp
\the\everyoverlay#2% saves wrapping (and lua call)
\else
\lower\d_framed_target_dp
\hbox{\the\everyoverlay#2}%
\fi
\egroup
\setlayoutcomponentattribute{\v!overlay:#1}%
\setbox\scratchbox\hbox \layoutcomponentboxattribute
{\kern -.5\dimexpr\wd\scratchbox-\d_framed_target_wd\relax % was \overlaywidth
\raise-.5\dimexpr\ht\scratchbox-\d_framed_target_ht\relax % not \overlayheight !
\box\scratchbox}%
\wd\scratchbox\d_framed_target_wd
\ht\scratchbox\d_framed_target_ht
\dp\scratchbox\d_framed_target_dp
\box\scratchbox
\egroup}
%D \macros
%D {overlayfakebox}
\unexpanded\def\overlayfakebox
{\hbox
{\setbox\scratchbox\emptyhbox
\wd\scratchbox\overlaywidth
\ht\scratchbox\overlayheight
\box\scratchbox}}
%D For testing we provide:
\def\doifoverlayelse#1% only tests external overlays
{\ifcsname\??overlay#1\endcsname
\expandafter\firstoftwoarguments
\else
\expandafter\secondoftwoarguments
\fi}
%D The content of the box will be (temporary) saved in a box. We also have an
%D extra box for backgrounds.
\newbox\b_framed_normal
\newbox\b_framed_extra
\newtoks\everybackgroundbox
\let\m_framed_background\empty % we might need a public name
\def\pack_framed_process_background
{\ifcsname\??overlaybuiltin\m_framed_background\endcsname
\pack_framed_process_background_indeed_internal
\else\ifcsname\??overlay\m_framed_background\endcsname
\pack_framed_process_background_indeed_external
\fi\fi}
\def\pack_framed_process_background_indeed_internal % : in name
{\bgroup
\setbox\b_framed_extra\hbox{%\bgroup
\ifzeropt\framedbackgroundoffset
\csname\??overlaybuiltin\m_framed_background\endcsname
\else
\kern-\framedbackgroundoffset
\hbox{\csname\??overlaybuiltin\m_framed_background\endcsname}%
\fi
}%\egroup
\wd\b_framed_extra\zeropoint
\ht\b_framed_extra\framedbackgroundheight
\dp\b_framed_extra\framedbackgrounddepth
\box\b_framed_extra
\egroup}
\def\pack_framed_process_background_indeed_external
{\pack_framed_overlay_initialize
\bgroup
\setbox\b_framed_extra\hbox{%\bgroup
\ifzeropt\framedbackgroundoffset
\csname\??overlay\m_framed_background\endcsname
\else
\kern-\framedbackgroundoffset
\hbox{\csname\??overlay\m_framed_background\endcsname}%
\fi
}%\egroup
\wd\b_framed_extra\zeropoint
\ht\b_framed_extra\framedbackgroundheight
\dp\b_framed_extra\framedbackgrounddepth
\box\b_framed_extra
\egroup}
\def\pack_framed_process_backgrounds#1,#2% #2 gobbles spaces (we could avoid one catch if we have nextbackground)
{\edef\m_framed_background{#1}%
\ifx\m_framed_background\s!unknown\else
\pack_framed_process_background
\expandafter\pack_framed_process_backgrounds
\fi#2}
%D Beware, a backgroundbox can be empty which is another reason why we set the
%D width to zero instead of back-skipping.
\newdimen\framedbackgroundwidth
\newdimen\framedbackgroundheight
\newdimen\framedbackgrounddepth
\newdimen\framedbackgroundoffset
\def\pack_framed_background_box_content% fuzzy but needed hack, this \vss, otherwise
{\vbox to \framedbackgroundheight{\vss\box\b_framed_normal\vss}} % vertical shift \backgroundheight
\def\pack_framed_add_region % experiment
{\anch_mark_region_box\b_framed_normal}
\def\pack_framed_add_background
{\setbox\b_framed_normal\hbox % was vbox
{\pack_framed_forgetall % can be relaxed
\boxmaxdepth\maxdimen
\framedbackgroundoffset\d_framed_backgroundoffset
\framedbackgroundwidth \wd\b_framed_normal
\framedbackgroundheight\ht\b_framed_normal
\framedbackgrounddepth \dp\b_framed_normal
\d_framed_target_wd\dimexpr\framedbackgroundwidth +2\framedbackgroundoffset\relax
\d_framed_target_ht\dimexpr\framedbackgroundheight+ \framedbackgroundoffset\relax
\d_framed_target_dp\dimexpr\framedbackgrounddepth + \framedbackgroundoffset+\framedparameter\c!backgrounddepth\relax
\let\pack_framed_overlay_initialize\pack_framed_overlay_initialize_indeed
\ifx\p_framed_component\empty
\resetlayoutcomponentattribute
\else
\setlayoutcomponentattribute{\v!background:\p_framed_component}%
\fi
\let\foregroundbox\pack_framed_background_box_content
\hbox \layoutcomponentboxattribute to \framedbackgroundwidth\bgroup % width in case 'foreground' is used as overlay
\the\everybackgroundbox % moved
\expandafter\pack_framed_process_backgrounds\p_framed_background,\s!unknown,\relax % hm, messy .. look into it
\box\b_framed_normal
\hss
\egroup}}
\def\pack_framed_overlay_initialize_indeed
{\edef\overlaywidth {\the\d_framed_target_wd\space}%
\edef\overlayheight {\the\dimexpr\d_framed_target_ht+\d_framed_target_dp\relax\space}%
\edef\overlaydepth {\the\d_framed_target_dp\space}%
\edef\overlaycolor {\framedparameter\c!backgroundcolor}% let ?
\edef\overlaylinecolor{\framedparameter\c!framecolor}% only needed for layers
\edef\overlaylinewidth{\the\d_framed_linewidth\space}%
%\edef\overlaycorner {\framedparameter\c!backgroundcorner}%
%\edef\overlayradius {\framedparameter\c!backgroundradius}%
\edef\overlayoffset {\the\framedbackgroundoffset\space}% \backgroundoffset % we steal this one
\let\pack_framed_overlay_initialize\relax}
%D One can explictly insert the foreground box. For that purpose we introduce the
%D overlay \type {foreground}.
%D
%D We predefine two already familiar backgrounds:
\letvalue{\??overlaybuiltin\v!screen }\pack_framed_background_box_gray
\letvalue{\??overlaybuiltin\v!color }\pack_framed_background_box_color
\letvalue{\??overlaybuiltin\v!foreground}\pack_framed_background_box_content % replaces: \defineoverlay[\v!foreground][\foregroundbox]
%D We can specify overlays as a comma separated list of overlays, a sometimes
%D handy feature.
%D
%D Besides backgrounds (overlays) we also need some macros to draw outlines (ruled
%D borders). Again we have to deal with square and round corners. The first category
%D can be handled by \TEX\ itself, the latter one depends on the driver. This macro
%D also support a negative offset.
\def\pack_framed_add_outline
{\setbox\b_framed_normal\hbox % rules on top of box
{\d_framed_target_wd\dimexpr\wd\b_framed_normal+2\d_framed_frameoffset\relax
\d_framed_target_ht\dimexpr\ht\b_framed_normal+ \d_framed_frameoffset\relax
\d_framed_target_dp\dimexpr\dp\b_framed_normal+ \d_framed_frameoffset+\framedparameter\c!framedepth\relax
\ifdim\d_framed_target_dp<\zeropoint
\advance\d_framed_target_ht \d_framed_target_dp
\scratchdimen-\d_framed_target_dp
\d_framed_target_dp\zeropoint
\else
\scratchdimen\zeropoint
\fi
\edef\overlaylinecolor{\framedparameter\c!framecolor}% twice, also in background
\setbox\b_framed_extra\hbox
{\kern-\d_framed_frameoffset
\raise\scratchdimen
\hbox{\ifx\overlaylinecolor\empty\else\dousecolorparameter\overlaylinecolor\fi\pack_framed_stroked_box}}%
\wd\b_framed_extra\wd\b_framed_normal
\ht\b_framed_extra\ht\b_framed_normal
\dp\b_framed_extra\dp\b_framed_normal
\wd\b_framed_normal\zeropoint
\box\b_framed_normal
\box\b_framed_extra}}
\def\pack_framed_stroked_box_normal
{\setbox\scratchbox\emptyhbox
\wd\scratchbox\d_framed_target_wd
\ht\scratchbox\d_framed_target_ht
\dp\scratchbox\d_framed_target_dp
\setbox\scratchbox\vbox \bgroup
\csname \??framedtop\p_framed_frame\framedparameter\c!topframe \endcsname
\nointerlineskip % new (needed for fences)
\hbox \bgroup
\csname \??framedleft\p_framed_frame\framedparameter\c!leftframe \endcsname
\box\scratchbox
\csname \??framedright\p_framed_frame\framedparameter\c!rightframe \endcsname
\egroup
\nointerlineskip % new (needed for fences)
\csname \??framedbottom\p_framed_frame\framedparameter\c!bottomframe\endcsname
\egroup
\wd\scratchbox\d_framed_target_wd
\ht\scratchbox\d_framed_target_ht
\dp\scratchbox\d_framed_target_dp
\box\scratchbox}
\def\pack_framed_t_rule{\hrule\s!height\d_framed_linewidth\kern-\d_framed_linewidth}
\def\pack_framed_b_rule{\kern-\d_framed_linewidth\hrule\s!height\d_framed_linewidth}
\def\pack_framed_r_rule{\kern-\d_framed_linewidth\vrule\s!width\d_framed_linewidth}
\def\pack_framed_l_rule{\vrule\s!width\d_framed_linewidth\kern-\d_framed_linewidth}
\letvalue{\??framedtop \v!on \v!on}\pack_framed_t_rule
\letvalue{\??framedtop \v!off\v!on}\pack_framed_t_rule
\letvalue{\??framedtop \v!on }\pack_framed_t_rule
\letvalue{\??framedbottom\v!on \v!on}\pack_framed_b_rule
\letvalue{\??framedbottom\v!off\v!on}\pack_framed_b_rule
\letvalue{\??framedbottom\v!on }\pack_framed_b_rule
\letvalue{\??framedleft \v!on \v!on}\pack_framed_l_rule
\letvalue{\??framedleft \v!off\v!on}\pack_framed_l_rule
\letvalue{\??framedleft \v!on }\pack_framed_l_rule
\letvalue{\??framedright \v!on \v!on}\pack_framed_r_rule
\letvalue{\??framedright \v!off\v!on}\pack_framed_r_rule
\letvalue{\??framedright \v!on }\pack_framed_r_rule
% no overlapping rules
\def\pack_framed_t_rules{\hbox{\kern\d_framed_linewidth\vrule\s!width\dimexpr\d_framed_target_wd-2\d_framed_linewidth\relax\s!height\d_framed_linewidth}\nointerlineskip\kern-\d_framed_linewidth}
\def\pack_framed_b_rules{\kern-\d_framed_linewidth\nointerlineskip\hbox{\kern\d_framed_linewidth\vrule\s!width\dimexpr\d_framed_target_wd-2\d_framed_linewidth\relax\s!height\d_framed_linewidth}}
\def\pack_framed_r_rules{\kern-\d_framed_linewidth\vrule\s!height\dimexpr\d_framed_target_ht-\d_framed_linewidth\relax\s!depth-\d_framed_linewidth\s!width\d_framed_linewidth}
\def\pack_framed_l_rules{\vrule\s!height\dimexpr\d_framed_target_ht-\d_framed_linewidth\relax\s!depth-\d_framed_linewidth\s!width\d_framed_linewidth\kern-\d_framed_linewidth}
\letvalue{\??framedtop \v!small\v!small}\pack_framed_t_rules
\letvalue{\??framedtop \v!off \v!small}\pack_framed_t_rules
\letvalue{\??framedtop \v!small }\pack_framed_t_rules
\letvalue{\??framedbottom\v!small\v!small}\pack_framed_b_rules
\letvalue{\??framedbottom\v!off \v!small}\pack_framed_b_rules
\letvalue{\??framedbottom\v!small }\pack_framed_b_rules
\letvalue{\??framedleft \v!small\v!small}\pack_framed_l_rules
\letvalue{\??framedleft \v!off \v!small}\pack_framed_l_rules
\letvalue{\??framedleft \v!small }\pack_framed_l_rules
\letvalue{\??framedright \v!small\v!small}\pack_framed_r_rules
\letvalue{\??framedright \v!off \v!small}\pack_framed_r_rules
\letvalue{\??framedright \v!small }\pack_framed_r_rules
% \framed
% [width=4cm,height=3cm,rulethickness=3mm,
% frame=off,rightframe=on,leftframe=on,topframe=on,bottomframe=on]
% {}
% \framed
% [width=4cm,height=3cm,rulethickness=3mm,
% frame=off,rightframe=small,leftframe=small,topframe=small,bottomframe=small]
% {}
% \framed
% [width=4cm,height=3cm,rulethickness=3mm,
% frame=off,rightframe=small,leftframe=small,topframe=small,bottomframe=on]
% {}
%D The next few macros are probably the most misused ones in \CONTEXT. They deal
%D with putting rules around boxes, provide backgrounds, offer alignment features,
%D and some more. We start with defining some booleans. These give an impression of
%D what we are going to take into account.
% todo : \c_framed_hasoffset
% faster : \let\c_framed_hasoffset\falseconditional
\newconditional\c_framed_has_offset
\newconditional\c_framed_has_width
\newconditional\c_framed_has_height
\newconditional\c_framed_has_format
\newconditional\c_framed_has_strut
\newconditional\c_framed_is_overlaid
\newconditional\c_framed_has_frame
\newconditional\c_framed_has_extra_offset
\newconditional\c_framed_text_location_none
%D \macros
%D {framed, setupframed}
%D
%D Ruled boxes are typeset using \type{\framed}. This command is quite versatile
%D and, although some users will probably seldom use it, one cannot overlook its
%D features.
%D
%D \showsetup{setupframed}
%D \showsetup{framed}
%D
%D This general macro is a special version of an even more general case, that can
%D easily be linked into other macros that need some kind of framing. The local
%D version is called with an extra parameter: the variable identifier. The reason
%D for passing this identifier between brackets lays in the mere fact that this way
%D we can use the optional argument grabbers.
\def\defaultframeoffset{.25ex}
\installcorenamespace{regularframedlevel}
\unexpanded\def\installregularframed#1%
{\defineframed[#1]}
\unexpanded\def\presetlocalframed[#1]%
{\defineframed[#1]}
% \presetlocalframed[\??framed]
\newcount\c_pack_framed_nesting
\unexpanded\def\pack_framed_process_framed[#1]%
{\bgroup
\iffirstargument % faster
\setupcurrentframed[#1]% here !
\fi
\pack_framed_process_indeed}
\unexpanded\def\framed
{\bgroup
\advance\c_pack_framed_nesting\plusone
\expandafter\let\csname\??framed>\the\c_pack_framed_nesting:\s!parent\endcsname\??framed
\edef\currentframed{>\the\c_pack_framed_nesting}%
\pack_framed_initialize
\dosingleempty\pack_framed_process_framed}
\unexpanded\def\startframed
{\dosingleempty\pack_framed_start_framed}
\def\pack_framed_start_framed[#1]%
{\bgroup
\advance\c_pack_framed_nesting\plusone
\expandafter\let\csname\??framed>\the\c_pack_framed_nesting:\s!parent\endcsname\??framed
\iffirstargument\secondargumenttrue\fi % dirty trick
\edef\currentframed{>\the\c_pack_framed_nesting}%
\pack_framed_initialize
\pack_framed_process_framed[#1]% can be inlined
\bgroup}
\let\stopframed\egroup
\unexpanded\def\normalframedwithsettings[#1]%
{\bgroup
\advance\c_pack_framed_nesting\plusone
\expandafter\let\csname\??framed>\the\c_pack_framed_nesting:\s!parent\endcsname\??framed
\bgroup
\edef\currentframed{>\the\c_pack_framed_nesting}%
\pack_framed_initialize
\setupcurrentframed[#1]%
\pack_framed_process_indeed}
%D \startbuffer
%D \setupframed [framecolor=yellow] \framed{A}
%D \defineframed[myframed] [framecolor=blue] \myframed{B}
%D \setupframed [myframed] [framecolor=red] \myframed{C}
%D \stopbuffer
%D
%D \typebuffer \getbuffer
%D
%D \startbuffer
%D \presetlocalframed[myframed]
%D \localframed[myframed][framecolor=green]{oeps}
%D \stopbuffer
%D
%D \typebuffer \getbuffer
%D \macros
%D {ifinframed}
%D
%D The normal case first presets all parameters and next starts looking for the user
%D supplied ones. The first step is omitted in the local case, because these are
%D preset at declaration time and keep their values unless explictly changed. By
%D presetting the variables everytime the normal command is called, we can use this
%D command nested, without the unwanted side effect of inheritance. The boolean is
%D used to speed up the color stack.
\newif\ifinframed
%D The next one is faster on multiple backgrounds per page. No
%D dimensions can be set, only frames and backgrounds.
\unexpanded\def\fastlocalframed[#1]#2[#3]#4% 3-4
{\bgroup
\edef\currentframed{#1}%
\pack_framed_initialize
\setbox\b_framed_normal\hbox{#4}%
\edef\p_framed_region{\framedparameter\c!region}%
\ifx\p_framed_region\v!yes % maybe later named
\pack_framed_add_region
\fi
\getparameters[\currentframed][#3]% no \expanded !
\edef\p_framed_rulethickness{\framedparameter\c!rulethickness}% also used in backgrounds
\d_framed_frameoffset\framedparameter\c!frameoffset\relax % also used in backgrounds
\edef\p_framed_frame{\framedparameter\c!frame}%
\edef\p_framed_background{\framedparameter\c!background}%
% not here, in calling macro: setups
\pack_framed_remove_depth
\ifx\p_framed_frame\v!overlay \else \ifx\p_framed_frame\v!none \else
\ifx\p_framed_rulethickness\empty\else
\d_framed_linewidth\p_framed_rulethickness\relax
\fi
\pack_framed_add_outline % real or invisible frame
\fi\fi
\ifx\p_framed_background\empty \else
\edef\p_framed_backgroundoffset{\framedparameter\c!backgroundoffset}%
\d_framed_backgroundoffset
\ifx\p_framed_backgroundoffset\v!frame
\d_framed_frameoffset
\else
\p_framed_backgroundoffset
\fi
\edef\p_framed_component{\framedparameter\c!component}%
\pack_framed_add_background
\fi
\pack_framed_restore_depth
\box\b_framed_normal
\egroup}
%D The next macro uses a box and takes its natural width and height so these
%D can better be correct.
\unexpanded\def\localbackgroundframed#1#2#3% namespace component box
{\bgroup
\edef\currentframed{#1}%
\pack_framed_initialize
\setbox\b_framed_normal\box#3%
\edef\p_framed_region{\framedparameter\c!region}%
\ifx\p_framed_region\v!yes % maybe later named
\pack_framed_add_region
\fi
\edef\p_framed_rulethickness{\framedparameter\c!rulethickness}% also used in backgrounds
\d_framed_frameoffset\framedparameter\c!frameoffset\relax % also used in backgrounds
\edef\p_framed_frame{\framedparameter\c!frame}%
\edef\p_framed_background{\framedparameter\c!background}%
\ifx\p_framed_frame\v!overlay \else \ifx\p_framed_frame\v!none \else
\ifx\p_framed_rulethickness\empty \else
\d_framed_linewidth\p_framed_rulethickness\relax
\fi
\pack_framed_add_outline % real or invisible frame
\fi\fi
\ifx\p_framed_background\empty \else
\edef\p_framed_backgroundoffset{\framedparameter\c!backgroundoffset}%
\d_framed_backgroundoffset
\ifx\p_framed_backgroundoffset\v!frame
\d_framed_frameoffset
\else
\p_framed_backgroundoffset
\fi
\edef\p_framed_component{#2}%
\pack_framed_add_background
\fi
\box\b_framed_normal
\egroup}
\let\postprocessframebox\relax
%D A nice example by Aditya:
%D
%D \starttyping
%D \setupframed
%D [loffset=\framedparameter{hoffset},
%D roffset=\framedparameter{hoffset},
%D hoffset=\zeropoint]
%D
%D \defineframed[test][hoffset=1cm]
%D \stoptyping
\newdimen\d_framed_width
\newdimen\d_framed_height
\newdimen\d_framed_frameoffset
\newdimen\d_framed_backgroundoffset
\newdimen\d_framed_local_offset
% todo: protect local \framednames
\unexpanded\def\localframed
{\bgroup
\dodoubleempty\pack_framed_local}
\unexpanded\def\pack_framed_local[#1][#2]%
{\bgroup
\edef\currentframed{#1}%
\pack_framed_initialize
\ifsecondargument % faster
\setupcurrentframed[#2]% here !
\fi
\pack_framed_process_indeed}
\unexpanded\def\directlocalframed[#1]% no optional
{\bgroup
\bgroup
\edef\currentframed{#1}%
\pack_framed_initialize
\pack_framed_process_indeed}
\unexpanded\def\localframedwithsettings[#1][#2]% no checking (so no spaces between)
{\bgroup
\bgroup
\edef\currentframed{#1}%
\pack_framed_initialize
\setupcurrentframed[#2]% here !
\pack_framed_process_indeed}
% done
\def\c!fr!analyze{fr:analyze} % private option
\unexpanded\def\pack_framed_process_indeed
{\d_framed_frameoffset\framedparameter\c!frameoffset
\edef\p_framed_backgroundoffset{\framedparameter\c!backgroundoffset}%
\d_framed_backgroundoffset
\ifx\p_framed_backgroundoffset\v!frame
\d_framed_frameoffset
\else
\p_framed_backgroundoffset
\fi
% new, experimental dirty hook
\framedparameter\c!extras
% to get the right spacing
\edef\p_framed_foregroundstyle{\framedparameter\c!foregroundstyle}%
\ifx\p_framed_foregroundstyle\empty\else\dousestyleparameter\p_framed_foregroundstyle\fi
% beware, both the frame and background offset can be overruled
%
\edef\p_framed_setups{\framedparameter\c!setups}%
% the next macros are visible
\edef\localoffset{\framedparameter\c!offset}%
\edef\localwidth {\framedparameter\c!width}%
\edef\localheight{\framedparameter\c!height}%
\edef\localformat{\framedparameter\c!align}%
\edef\localstrut {\framedparameter\c!strut}%
% these are not
\edef\p_framed_autostrut {\framedparameter\c!autostrut}%
\edef\p_framed_frame {\framedparameter\c!frame}%
\edef\p_framed_location {\framedparameter\c!location}%
\edef\p_framed_orientation{\framedparameter\c!orientation}%
%
\edef\p_framed_autowidth {\framedparameter\c!autowidth}%
\edef\p_framed_franalyze {\framedparameter\c!fr!analyze}% experimental option
%
\ifx\p_framed_frame\v!overlay % no frame, no offset, no framewidth
\setfalse\c_framed_has_frame
\let\localoffset\v!overlay
\else\ifx\p_framed_frame\v!none % no frame, no framewidth
\setfalse\c_framed_has_frame
\else
\settrue\c_framed_has_frame
\fi\fi
\ifconditional\c_framed_has_frame
\edef\p_framed_rulethickness{\framedparameter\c!rulethickness}%
\ifx\p_framed_rulethickness\empty\else
\d_framed_linewidth\p_framed_rulethickness\relax
\fi
\else
\d_framed_linewidth\zeropoint
\fi
\ifx\localformat\empty
\setfalse\c_framed_has_format
\else
\settrue\c_framed_has_format
\dosetraggedcommand\localformat % not that fast
\fi
\csname\??framedoffsetalternative
\ifcsname\??framedoffsetalternative\localoffset\endcsname
\localoffset
\else
\s!unknown
\fi
\endcsname
\csname\??framedwidthalternative
\ifcsname\??framedwidthalternative\localwidth\endcsname
\localwidth
\else
\s!unknown
\fi
\endcsname
\csname\??framedheightalternative
\ifcsname\??framedheightalternative\localheight\endcsname
\localheight
\else
\s!unknown
\fi
\endcsname
% the next check could move to heightalternative
\ifconditional\c_framed_has_height
% obey user set height, also downward compatible
\else
\edef\p_framed_lines{\framedparameter\c!lines}%
\ifx\p_framed_lines\empty\else
\ifcase\p_framed_lines\else
\d_framed_height\p_framed_lines\lineheight
\edef\localheight{\the\d_framed_height}%
\settrue\c_framed_has_height
\fi
\fi
\fi
% this is now an option: width=local
%
% \ifdim\d_framed_width=\hsize
% \parindent\zeropoint
% \setlocalhsize
% \d_framed_width\localhsize
% \fi
% i.e. disable (colsetbackgroundproblemintechniek)
\advance\d_framed_width -2\d_framed_local_offset
\advance\d_framed_height -2\d_framed_local_offset
\csname\??framedstrutalternative
\ifcsname\??framedstrutalternative\localstrut\endcsname
\localstrut
\else
\s!unknown
\fi
\endcsname
% the next check could move to strutalternative
\ifconditional\c_framed_has_strut
\let\localbegstrut\begstrut
\let\localendstrut\endstrut
\let\localstrut \strut
\else
\let\localbegstrut\pseudobegstrut % was: \relax
\let\localendstrut\pseudoendstrut % was: \relax
\let\localstrut \pseudostrut % was: \relax
%\ifconditional\c_framed_has_height\ifdim\d_framed_height<\strutht % saveguard
% \let\localbegstrut\relax % but not that
% \let\localstrut \relax % save after all
%\fi\fi
\fi
\ifx\p_framed_autostrut\v!yes
\let\delayedbegstrut\relax
\let\delayedendstrut\relax
\let\delayedstrut \relax
\else
\let\delayedbegstrut\localbegstrut
\let\delayedendstrut\localendstrut
\let\delayedstrut \localstrut
\let\localbegstrut \relax
\let\localendstrut \relax
\let\localstrut \relax
\fi
\ifconditional\c_framed_has_height
\let\\\pack_framed_vboxed_newline
\ifconditional\c_framed_has_width
\let\hairline\pack_framed_vboxed_hairline
\ifconditional\c_framed_has_format
\let\next\pack_framed_format_format_yes
\else
\let\next\pack_framed_format_format_nop
\fi
\else
\let\hairline\pack_framed_hboxed_hairline
\ifconditional\c_framed_has_format
\let\next\pack_framed_format_format_height
\else
\let\next\pack_framed_format_format_vsize
\fi
\fi
\else
\ifconditional\c_framed_has_width
\ifconditional\c_framed_has_format
\let\hairline\pack_framed_vboxed_hairline
\let\\\pack_framed_vboxed_newline
\let\next\pack_framed_format_format_width
\else
\let\hairline\pack_framed_hboxed_hairline
\let\\\pack_framed_hboxed_newline
\let\next\pack_framed_format_format_hsize
\fi
\else
\let\hairline\pack_framed_hboxed_hairline
\let\\\pack_framed_hboxed_newline
\let\next\pack_framed_format_format_no_size
\fi
\fi
\pack_framed_check_extra_offsets
\edef\p_framed_background{\framedparameter\c!background}%
\ifx\p_framed_background\empty
\let\pack_framed_forgetall\forgetall
\else
\let\pack_framed_forgetall\relax
\forgetall
\fi
\edef\framedwidth {\the\ifdim\d_framed_width >\zeropoint \d_framed_width \else\zeropoint\fi}% public
\edef\framedheight{\the\ifdim\d_framed_height>\zeropoint \d_framed_height\else\zeropoint\fi}% public
\edef\framedoffset{\the\dimexpr\ifconditional\c_framed_has_offset\localoffset \else\zeropoint\fi}% public
\ifx\p_framed_orientation\empty
\let\pack_framed_stop_orientation\relax
\else
\pack_framed_start_orientation
\fi
\afterassignment\pack_framed_restart
\setbox\b_framed_normal\next}
% alternatives for width, height, strut and offset
\installcorenamespace{framedwidthalternative}
\installcorenamespace{framedheightalternative}
\installcorenamespace{framedstrutalternative}
\installcorenamespace{framedoffsetalternative}
% widths
\setvalue{\??framedwidthalternative\empty}%
{\ifconditional\c_framed_has_format
\settrue\c_framed_has_width
\d_framed_width\hsize
\else
\setfalse\c_framed_has_width
\d_framed_width\zeropoint
\fi}
\setvalue{\??framedwidthalternative\v!fit}%
{\ifconditional\c_framed_has_format
\settrue\c_framed_has_width
\d_framed_width\hsize
\else
\setfalse\c_framed_has_width
\d_framed_width\zeropoint
\fi}
\setvalue{\??framedwidthalternative\v!fixed}% equals \v!fit but no shapebox
{\ifconditional\c_framed_has_format
\settrue\c_framed_has_width
\d_framed_width\hsize
\else
\setfalse\c_framed_has_width
\d_framed_width\zeropoint
\fi}
\setvalue{\??framedwidthalternative\v!broad}%
{\settrue\c_framed_has_width
\d_framed_width\hsize}
\setvalue{\??framedwidthalternative\v!max}% idem broad
{\settrue\c_framed_has_width
\d_framed_width\hsize}
\setvalue{\??framedwidthalternative\v!local}%
{\settrue\c_framed_has_width
\setlocalhsize
\d_framed_width\localhsize}
\setvalue{\??framedwidthalternative\s!unknown}%
{\settrue\c_framed_has_width
\d_framed_width\localwidth}
% heights
\setvalue{\??framedheightalternative\empty}%
{\setfalse\c_framed_has_height
\d_framed_height\zeropoint}
\setvalue{\??framedheightalternative\v!fit}%
{\setfalse\c_framed_has_height
\d_framed_height\zeropoint}
\setvalue{\??framedheightalternative\v!broad}%
{\setfalse\c_framed_has_height
\d_framed_height\zeropoint}
\setvalue{\??framedheightalternative\v!max}%
{\settrue\c_framed_has_height
\d_framed_height\vsize}
\setvalue{\??framedheightalternative\s!unknown}%
{\settrue\c_framed_has_height
\d_framed_height\localheight}
% struts
\setvalue{\??framedstrutalternative\v!no}%
{\setfalse\c_framed_has_strut}
\setvalue{\??framedstrutalternative\v!global}%
{\setstrut}
\setvalue{\??framedstrutalternative\v!local}%
{\setfontstrut}
\setvalue{\??framedstrutalternative\v!yes}%
{\setstrut}
\setvalue{\??framedstrutalternative\s!unknown}%
{\setstrut}
% offsets
\setvalue{\??framedoffsetalternative\v!none}%
{\setfalse\c_framed_has_offset
\setfalse\c_framed_has_strut
\setfalse\c_framed_is_overlaid
\d_framed_local_offset\d_framed_linewidth}
\setvalue{\??framedoffsetalternative\v!overlay}%
{% \ifx\p_framed_frame\v!no \setfalse\c_framed_has_frame \fi % test first
\setfalse\c_framed_has_offset
\setfalse\c_framed_has_strut
\settrue \c_framed_is_overlaid
\d_framed_local_offset\zeropoint}
% \setvalue{\??framedoffsetalternative\v!strut}%
% {\setfalse\c_framed_has_offset
% \settrue \c_framed_has_strut
% \settrue \c_framed_is_overlaid
% \d_framed_local_offset\zeropoint}
\setvalue{\??framedoffsetalternative\v!default}% new per 2-6-2000
{\settrue \c_framed_has_offset
\settrue \c_framed_has_strut
\setfalse\c_framed_is_overlaid
\let\localoffset\defaultframeoffset
\letframedparameter\c!offset\defaultframeoffset % brrr
\d_framed_local_offset\dimexpr\localoffset+\d_framed_linewidth\relax}
\setvalue{\??framedoffsetalternative\s!unknown}%
{\settrue \c_framed_has_offset
\settrue \c_framed_has_strut
\setfalse\c_framed_is_overlaid
\let\defaultframeoffset\localoffset
\d_framed_local_offset\dimexpr\localoffset+\d_framed_linewidth\relax}
% so far for alternatives
\let\pack_framed_stop_orientation\relax
\def\pack_framed_restart
{\aftergroup\pack_framed_finish}
\def\pack_framed_do_top {\raggedtopcommand\framedparameter\c!top}
\def\pack_framed_do_bottom{\framedparameter\c!bottom\raggedbottomcommand}
%D Carefull analysis of this macro will learn us that not all branches in the last
%D conditionals can be encountered, that is, some assignments to \type{\next} will
%D never occur. Nevertheless we implement the whole scheme, if not for future
%D extensions.
%D \macros
%D {doassigncheckedframeoffset}
%D
%D Offset helper (see menus):
\def\doassigncheckedframeoffset#1#2% could be a fast \csname .. \endcsname
{\edef\checkedframeoffset{#2}%
#1%
\ifx\checkedframeoffset\empty \zeropoint\else
\ifx\checkedframeoffset\v!overlay\zeropoint\else
\ifx\checkedframeoffset\v!none \zeropoint\else
\ifx\checkedframeoffset\v!frame \zeropoint\else
\ifx\checkedframeoffset\v!default\zeropoint\else
#2%
\fi\fi\fi\fi\fi
\relax}
%D \macros
%D {ifreshapeframebox}
%D
%D The last few lines tell what to do after the content of the box is collected and
%D passed to the next macro. In the case of a fixed width and centered alignment,
%D the content is evaluated and used to determine the most natural width. The rest
%D of the code deals with backgrounds and frames.
\newif\ifreshapeframebox \reshapeframeboxtrue
%D Beware: setting \type {top} and \type {bottom} to nothing, may
%D result in a frame that is larger that the given height! try:
%D
%D \starttyping
%D \framed
%D [height=3cm,top=,bottom=,offset=overlay]
%D {\strut test \shapefill \strut test}
%D \stoptyping
%D
%D This is intended behaviour and not a bug! One can always set
%D
%D \starttyping
%D ...,bottom=\kern0pt,...
%D \stoptyping
% experiment ... \p_framed_franalyze -> we could support 'first' as location key
% option but then we will always do an analysis and reimplement the location
% options (btw, beware of location settings of derived functionality that bleed
% into this
\def\pack_framed_finish_a
{\ifreshapeframebox
\pack_framed_reshape_process
\else\ifx\p_framed_franalyze\v!yes
\pack_framed_reshape_analyze
\else
\pack_framed_reshape_reset
\fi\fi
\setfalse\c_framed_has_width}
\def\pack_framed_finish_b
{\ifx\p_framed_franalyze\v!yes
\pack_framed_reshape_analyze
\else
\pack_framed_reshape_reset
\fi
\setfalse\c_framed_has_width}
\def\pack_framed_finish_c
{\ifx\p_framed_franalyze\v!yes
\pack_framed_reshape_analyze
\else
\pack_framed_reshape_reset
\fi}
\unexpanded\def\pack_framed_finish
{\pack_framed_stop_orientation % hm, wrong place ! should rotate the result (after reshape)
\pack_framed_locator_before\p_framed_location
\ifconditional\c_framed_has_format
\ifx\p_framed_autowidth\v!force
\pack_framed_finish_a
\else\ifx\localwidth\v!fit
\ifx\p_framed_autowidth\v!yes
\pack_framed_finish_a
\else
\pack_framed_finish_b
\fi
\else\ifx\localwidth\v!fixed
\pack_framed_finish_b
\else
\pack_framed_finish_c
\fi\fi\fi
\ifconditional\page_postprocessors_needed_box
\page_postprocessors_linenumbers_box\b_framed_normal
\fi
\else
\pack_framed_finish_c
\fi
\ifconditional\c_framed_has_width
\wd\b_framed_normal\d_framed_width
\fi
\ifconditional\c_framed_has_height
\ht\b_framed_normal\d_framed_height
\fi
\edef\p_framed_empty{\framedparameter\c!empty}%
\ifx\p_framed_empty\v!yes
\pack_framed_fake_box
\fi
\iftrialtypesetting \else
\edef\p_framed_region{\framedparameter\c!region}%
\ifx\p_framed_region\v!yes % maybe later named
\pack_framed_add_region
\fi
\fi
\d_framed_applied_offset
\ifconditional\c_framed_is_overlaid
\zeropoint
\else
\d_framed_linewidth
\fi
\ifconditional\c_framed_has_offset
\advance\d_framed_applied_offset\localoffset
\fi
\ifconditional\c_framed_has_extra_offset
\pack_framed_apply_extra_offsets % includes \d_framed_applied_offset
\else
\ifzeropt\d_framed_applied_offset
\else
\pack_framed_widen_box
\fi
\fi
%
\ifx\postprocessframebox\relax \else
\let\next\postprocessframebox
\let\postprocessframebox\relax % prevent nesting
\next\b_framed_normal
\fi
\iftrialtypesetting
% new
\else
\ifconditional\c_framed_has_frame % real or invisible frame
\pack_framed_add_outline
\fi
\ifx\p_framed_background\empty \else
\edef\p_framed_component{\framedparameter\c!component}%
\pack_framed_add_background
\fi
\fi
\pack_framed_locator_after\p_framed_location
\box\b_framed_normal
\global\frameddimensionstate % global so to be used directly afterwards !
\ifconditional\c_framed_has_width
\ifconditional\c_framed_has_height \plusthree \else \plusone \fi
\else
\ifconditional\c_framed_has_height \plustwo \else \zerocount \fi
\fi
\egroup
\egroup}
\installcorenamespace{framedlocatorbefore}
\installcorenamespace{framedlocatorafter}
\newconstant\frameddimensionstate % global state: 0=unknown 1=width 2=height 3=both
\def\pack_framed_fake_box
{\setbox\scratchbox\emptyhbox
\wd\scratchbox\wd\b_framed_normal
\ht\scratchbox\ht\b_framed_normal
\dp\scratchbox\dp\b_framed_normal
\setbox\b_framed_normal\box\scratchbox}
\def\installframedlocator#1#2#3%
{\setvalue{\??framedlocatorbefore#1}{#2}%
\setvalue{\??framedlocatorafter #1}{#3}}
\def\pack_framed_locator_before#1{\csname\??framedlocatorbefore#1\endcsname}
\def\pack_framed_locator_after #1{\csname\??framedlocatorafter #1\endcsname}
\newdimen\d_framed_locator_ht
\newdimen\d_framed_locator_dp
\def\pack_framed_locater_set#1%
{\d_framed_locator_ht\dimexpr
#1+\d_framed_linewidth
\ifconditional\c_framed_has_offset
+\framedparameter\c!offset
\fi
\relax
\d_framed_locator_dp\dimexpr\ht\b_framed_normal-\d_framed_locator_ht\relax}
% \ruledhbox
% {A
% \framed[width=2cm,align=middle,location=hanging]{location\\equals\\hanging}
% \framed[width=2cm,align=middle,location=depth] {location\\equals\\depth}
% \framed[width=2cm,align=middle,location=height] {location\\equals\\height}
% B}
% \vskip2cm
% \ruledhbox
% {A
% \framed[width=2cm,align=middle,location=low] {location\\equals\\low}
% \framed[width=2cm,align=middle,location=line] {location\\equals\\line}
% \framed[width=2cm,align=middle,location=high] {location\\equals\\high}
% B}
% \vskip2cm
% \ruledhbox
% {A
% \framed[width=2cm,align=middle,location=top] {location\\equals\\top}
% \framed[width=2cm,align=middle,location=bottom] {location\\equals\\bottom}
% \framed[width=2cm,align=middle,location=lohi] {location\\equals\\lohi}
% \framed[width=2cm,align=middle,location=middle] {location\\equals\\middle}
% B}
\installframedlocator \v!hanging % best with strut=no
{}
{\dp\b_framed_normal\ht\b_framed_normal
\ht\b_framed_normal\zeropoint}
\installframedlocator \v!depth
{}
{\ht\b_framed_normal\dimexpr\ht\b_framed_normal-\strutdp\relax
\dp\b_framed_normal\strutdp
\box\b_framed_normal}
\installframedlocator \v!height
{}
{\dp\b_framed_normal\dimexpr\ht\b_framed_normal-\strutht\relax
\ht\b_framed_normal\strutht
\box\b_framed_normal}
\installframedlocator \v!high
{}
{\pack_framed_locater_set\strutht
\setbox\b_framed_normal\hbox{\lower\d_framed_locator_dp\box\b_framed_normal}%
\ht\b_framed_normal\strutht
\dp\b_framed_normal\strutdp
\hbox{\box\b_framed_normal}}
\installframedlocator \v!line
{}
{\setbox\b_framed_normal\hbox{\lower.5\ht\b_framed_normal\box\b_framed_normal}%
\ht\b_framed_normal.5\lineheight
\dp\b_framed_normal.5\lineheight
\hbox{\box\b_framed_normal}}
\installframedlocator \v!low
{}
{\pack_framed_locater_set\strutdp
\setbox\b_framed_normal\hbox{\lower\d_framed_locator_ht\box\b_framed_normal}%
\ht\b_framed_normal\strutht
\dp\b_framed_normal\strutdp
\box\b_framed_normal}
\installframedlocator \v!top
{}
{\pack_framed_locater_set\strutht
\setbox\b_framed_normal\hbox{\lower\d_framed_locator_dp\box\b_framed_normal}%
\ht\b_framed_normal\d_framed_locator_ht
\dp\b_framed_normal\d_framed_locator_dp
\hbox{\box\b_framed_normal}}
\installframedlocator \v!middle
{}
{\scratchdimen.5\ht\b_framed_normal
\setbox\b_framed_normal\hbox{\lower\scratchdimen\box\b_framed_normal}%
\ht\b_framed_normal\scratchdimen
\dp\b_framed_normal\scratchdimen
\hbox{\box\b_framed_normal}}
\installframedlocator \v!lohi
{\pack_framed_locator_before\v!middle}
{\pack_framed_locator_after \v!middle}
\installframedlocator \v!bottom
{}
{\pack_framed_locater_set\strutdp
\setbox\b_framed_normal\hbox{\lower\d_framed_locator_ht\box\b_framed_normal}%
\ht\b_framed_normal\d_framed_locator_dp
\dp\b_framed_normal\d_framed_locator_ht
\hbox{\box\b_framed_normal}}
\installframedlocator \v!keep % retains height/depth
{\pack_framed_remove_depth}
{\pack_framed_restore_depth}
% also used in fastlocalframed
\newdimen\d_framed_original_wd
\newdimen\d_framed_original_ht
\newdimen\d_framed_original_dp
\def\pack_framed_remove_depth
{\d_framed_original_wd\wd\b_framed_normal
\d_framed_original_ht\ht\b_framed_normal
\d_framed_original_dp\dp\b_framed_normal
\ifzeropt\d_framed_original_dp\else
\setbox\b_framed_normal\hbox{\raise\d_framed_original_dp\box\b_framed_normal}%
\fi
\wd\b_framed_normal\d_framed_original_wd
\ht\b_framed_normal\dimexpr\d_framed_original_ht+\d_framed_original_dp\relax
\dp\b_framed_normal\zeropoint}
\def\pack_framed_restore_depth
{\ifzeropt\d_framed_original_dp \else
\setbox\b_framed_normal\hbox{\lower\d_framed_original_dp\box\b_framed_normal}%
\fi
\wd\b_framed_normal\d_framed_original_wd
\ht\b_framed_normal\d_framed_original_ht
\dp\b_framed_normal\d_framed_original_dp}
% \framed[width=12cm,height=3cm,orientation=0]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=90]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=180]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=270]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=-90]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=-180]{\input ward\relax}
% \framed[width=12cm,height=3cm,orientation=-270]{\input ward\relax}
\def\pack_framed_start_orientation
{\ifcase\p_framed_orientation
\let\pack_framed_stop_orientation\relax
\else
\scratchcounter\p_framed_orientation % weird .. why
\divide\scratchcounter\plustwo
\ifodd\scratchcounter
\let\pack_framed_stop_orientation\pack_framed_stop_orientation_odd
\else
\let\pack_framed_stop_orientation\pack_framed_stop_orientation_even
\fi
\fi}
\def\pack_framed_stop_orientation_odd
{\swapmacros\framedwidth\framedheight
\swapmacros\localwidth\localheight
\swapdimens\d_framed_height\d_framed_width
\pack_framed_stop_orientation_even}
\def\pack_framed_stop_orientation_even
{\setbox\b_framed_normal\hbox{\dorotatebox\p_framed_orientation\hbox{\box\b_framed_normal}}}
%D The last conditional takes care of the special situation of in||line \inframed
%D [height=3cm] {framed} boxes. Such boxes have to be \inframed {aligned} with the
%D running text.
\unexpanded\def\inframed
{\dosingleempty\pack_framed_inline}
% \def\pack_framed_inline[#1]%
% {\framed[\c!location=\v!low,#1]}
%
% or:
\def\pack_framed_inline[%
{\framed[\c!location=\v!low,}
%D When we set \type{empty} to \type{yes}, we get ourselves a frame and/or background,
%D but no content, so actually we have a sort of phantom framed box.
%D \macros
%D {mframed, minframed}
%D
%D When Tobias asked how to frame mathematical elements in formulas, Taco's posted the
%D next macro:
%D
%D \starttyping
%D \def\mframed#1%
%D {\relax
%D \ifmmode
%D \vcenter{\hbox{\framed{$\ifinner\else\displaystyle\fi#1$}}}%
%D \else
%D \framed{$#1$}%
%D \fi}
%D \stoptyping
%D
%D Because \type {\ifinner} does not (always) reports what one would expect, we move the
%D test to the outer level. We also want to pass arguments,
%D
%D \starttyping
%D \def\mframed%
%D {\dosingleempty\domframed}
%D
%D \def\domframed[#1]#2% % tzt \dowithnextmathbox ?
%D {\relax
%D \ifmmode
%D \ifinner
%D \inframed[#1]{$#2$}%
%D \else
%D \vcenter{\hbox{\framed[#1]{$\displaystyle#2$}}}%
%D \fi
%D \else
%D \inframed[#1]{$#2$}%
%D \fi}
%D \stoptyping
%D
%D Still better is the next alternative, if only because it takes care of setting the super-
%D and subscripts styles
\newcount\c_framed_mstyle
\unexpanded\def\pack_framed_math_strut
{\Ustartmath
\triggermathstyle\c_framed_mstyle
\vphantom{(}%
\Ustopmath}
\installcorenamespace{mathframed}
\installframedcommandhandler \??mathframed {mathframed} \??mathframed
\appendtoks
\setuevalue{\currentmathframed}{\pack_framed_mathframed{\currentmathframed}}%
\to \everydefinemathframed
\unexpanded\def\pack_framed_mathframed#1%
{\begingroup
\edef\currentmathframed{#1}%
\dosingleempty\pack_framed_mathframed_indeed}
\def\pack_framed_mathframed_indeed[#1]#2% no fancy nesting supported here
{\iffirstargument
\setupcurrentmathframed[#1]%
\fi
\c_framed_mstyle\mathstyle
\doifnot{\mathframedparameter\c!location}\v!low{\let\normalstrut\pack_framed_math_strut}%
\inheritedmathframedframed{\Ustartmath\triggermathstyle\c_framed_mstyle#2\Ustopmath}%
\endgroup}
\definemathframed[mframed]
\definemathframed[inmframed][\c!location=\v!low]
%D So instead of the rather versatile \type {\framed}, we use \type {\mframed}:
%D
%D \startbuffer
%D \startformula
%D x \times \mframed{y} \times y^{z_z}
%D x \times \inmframed{y} \times y^{z_z}
%D \stopformula
%D \stopbuffer
%D
%D \typebuffer \getbuffer
%D
%D And:
%D
%D \startbuffer
%D \startformula
%D x \times \mframed{y} \times y^{\mframed{z}_{\mframed{z}}}
%D \stopformula
%D \stopbuffer
%D
%D \typebuffer \getbuffer
%D
%D As usual, one can specify in what way the text should be framed. One should be
%D aware of the fact that, inorder to preserve the proper spacing, the \type
%D {offset} is set to \type {overlay} and \type {frameoffset} is used used instead.
%D
%D \startbuffer
%D \startformula
%D x \times y^{\mframed[framecolor=red]{z}_{z}}
%D \stopformula
%D \stopbuffer
%D
%D \typebuffer \getbuffer
%D
%D For inline use, we also provide the \type {\inmframed} alternative: we want $x
%D \times \inmframed{y}$ in inline math, right?
%D This previous framing macros needs a lot of alternatives for putting rules around
%D boxes, inserting offsets and aligning text. Each step is handled by separate macros.
\newdimen\d_framed_applied_offset
\newdimen\d_framed_loffset
\newdimen\d_framed_roffset
\newdimen\d_framed_toffset
\newdimen\d_framed_boffset
\def\pack_framed_check_extra_offsets
{\setfalse\c_framed_has_extra_offset
\d_framed_loffset\framedparameter\c!loffset\relax
\d_framed_roffset\framedparameter\c!roffset\relax
\d_framed_toffset\framedparameter\c!toffset\relax
\d_framed_boffset\framedparameter\c!boffset\relax
\ifzeropt\d_framed_loffset\else \advance\d_framed_width -\d_framed_loffset \settrue\c_framed_has_extra_offset \fi
\ifzeropt\d_framed_roffset\else \advance\d_framed_width -\d_framed_roffset \settrue\c_framed_has_extra_offset \fi
\ifzeropt\d_framed_toffset\else \advance\d_framed_height-\d_framed_toffset \settrue\c_framed_has_extra_offset \fi
\ifzeropt\d_framed_boffset\else \advance\d_framed_height-\d_framed_boffset \settrue\c_framed_has_extra_offset \fi}
\def\pack_framed_apply_extra_offsets
{\setbox\b_framed_normal\vbox\bgroup
\advance\d_framed_toffset\d_framed_applied_offset
\advance\d_framed_boffset\d_framed_applied_offset
\advance\d_framed_loffset\d_framed_applied_offset
\advance\d_framed_roffset\d_framed_applied_offset
\kern\d_framed_toffset
\hbox\bgroup
\kern\d_framed_loffset
\box\b_framed_normal
\kern\d_framed_roffset
\egroup
\kern\d_framed_boffset
\egroup}
\def\pack_framed_widen_box
{\setbox\b_framed_normal\vbox
{\kern\d_framed_applied_offset
\hbox{\kern\d_framed_applied_offset\box\b_framed_normal\kern\d_framed_applied_offset}%
\kern\d_framed_applied_offset}}
%D Let's hope that the next few examples show us enough of what needs to be
%D done by the auxiliary macros.
%D
%D \startbuffer
%D \framed[height=1cm,offset=.5cm] {rule based learning}
%D \framed[height=1cm,offset=0cm] {rule based learning}
%D \framed[height=1cm,offset=none] {rule based learning}
%D \framed[height=1cm,offset=overlay]{rule based learning}
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlinecorrection
%D \hbox{\getbuffer}
%D \stoplinecorrection
%D
%D \startbuffer
%D \framed[offset=.5cm] {rule based learning}
%D \framed[offset=0cm] {rule based learning}
%D \framed[offset=none] {rule based learning}
%D \framed[offset=overlay]{rule based learning}
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlinecorrection
%D \hbox{\getbuffer}
%D \stoplinecorrection
%D
%D \startbuffer
%D \framed[strut=nee,offset=.5cm] {rule based learning}
%D \framed[strut=nee,offset=0cm] {rule based learning}
%D \framed[strut=nee,offset=none] {rule based learning}
%D \framed[strut=nee,offset=overlay]{rule based learning}
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlinecorrection
%D \hbox{\getbuffer}
%D \stoplinecorrection
%D
%D \startbuffer
%D \framed[width=3cm,align=left] {rule\\based\\learning}
%D \framed[width=3cm,align=middle] {rule\\based\\learning}
%D \framed[width=3cm,align=right] {rule\\based\\learning}
%D \framed[width=fit,align=middle] {rule\\based\\learning}
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlinecorrection
%D \hbox{\dontcomplain\getbuffer}
%D \stoplinecorrection
%D
%D So now we're ready for the complicated stuff. We distinguish between borders with
%D straight lines and those with round corners. When using the first alternative it
%D is possible to turn off one or more lines. More fancy shapes are also possible by
%D specifying dedicated backgrounds. Turning lines on and off is implemented as
%D efficient as possible and as a result is interface language dependant. This next
%D implementation evolved from simpler ones. It puts for instance the rules on top
%D of the content and provides additional offset capabilities. The lot of calls to
%D other macros makes this mechanism not that easy to comprehend.
%D
%D We handle left, right or middle alignment as well as fixed or free widths and
%D heights. Each combination gets its own macro.
%D
%D The following code handles one-liners: \type {align={line,flushright}}. Beware,
%D since we entered a group and either or not grab the next bgroup token, we need to
%D finish the group in the oneliner mode.
\ifdefined\raggedonelinerstate \else \newconditional\raggedonelinerstate \fi
\def\doformatonelinerbox % beware: assumes explicit preceding bgroup
{\ifconditional\raggedonelinerstate
\expandafter\dodoformatonelinerbox
\else
\expandafter\nodoformatonelinerbox
\fi}
\def\dodoformatonelinerbox
{\afterassignment\redoformatonelinerbox
\setbox\nextbox\hbox}
\def\redoformatonelinerbox
{\aftergroup\dododoformatonelinerbox
\ignorespaces}
\def\dododoformatonelinerbox
{\hbox to \hsize
{\ifcase\raggedstatus\or\hss\or\hss \fi
\unhbox\nextbox \removeunwantedspaces
\ifcase\raggedstatus\or \or\hss\or\hss\fi}%
\egroup}
\def\nodoformatonelinerbox % grabs {
{\let\next=}
%D The handlers:
\def\pack_framed_forgetall{\forgetall}
% test: (saves one forgetall)
%
% \edef\framedbackground{\framedparameter\c!background}%
% \ifx\framedbackground\empty
% \let\pack_framed_forgetall\forgetall
% \else
% \let\pack_framed_forgetall\relax
% \forgetall
% \fi
\def\pack_framed_set_foregroundcolor
{\edef\p_framed_foregroundcolor{\framedparameter\c!foregroundcolor}%
\ifx\p_framed_foregroundcolor\empty\else\dousecolorparameter\p_framed_foregroundcolor\fi}
\def\pack_framed_do_setups
{\ifx\p_framed_setups\empty \else
\setups[\p_framed_setups]% \texsetup
\fi}
\def\pack_framed_format_format_yes
{\vbox to \d_framed_height
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\oninterlineskip
\hsize\d_framed_width
\vsize\d_framed_height
\pack_framed_do_setups
\raggedcommand
\pack_framed_do_top
\bgroup
\localbegstrut
\aftergroup\localendstrut
\aftergroup\pack_framed_do_bottom
\aftergroup\egroup
\doformatonelinerbox}
\def\pack_framed_format_format_nop
{\vbox to \d_framed_height
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\oninterlineskip
\hsize\d_framed_width
\vsize\d_framed_height
\pack_framed_do_setups
\raggedcenter
\vss
\bgroup
\localbegstrut
\aftergroup\localendstrut
\aftergroup\vss
\aftergroup\egroup
\doformatonelinerbox}
\def\pack_framed_format_format_height
{\vbox to \d_framed_height
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\oninterlineskip
\pack_framed_do_setups
\raggedcommand
\vss
\bgroup
\aftergroup\localendstrut
\aftergroup\vss
\aftergroup\egroup
\localbegstrut
\doformatonelinerbox}
\def\pack_framed_format_format_width
{\vbox
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\oninterlineskip
\hsize\d_framed_width
\pack_framed_do_setups
\raggedcommand
\pack_framed_do_top
\bgroup
\localbegstrut
\aftergroup\localendstrut
\aftergroup\pack_framed_do_bottom
\aftergroup\egroup
\doformatonelinerbox}
\def\pack_framed_format_format_vsize
{\vbox to \d_framed_height
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\vsize\d_framed_height
\pack_framed_do_setups
\vss
\bgroup
\aftergroup\vss
\aftergroup\egroup
\hbox
\bgroup
\aftergroup\egroup
\localstrut
\doformatonelinerbox}
\def\pack_framed_format_format_hsize
{\hbox to \d_framed_width
\bgroup
\let\postprocessframebox\relax
\pack_framed_forgetall
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\pack_framed_do_setups
\hss
\localstrut
\bgroup
\aftergroup\hss
\aftergroup\egroup
\doformatonelinerbox}
\def\pack_framed_format_format_no_size
{\hbox
\bgroup
\iftrialtypesetting \else
\pack_framed_set_foregroundcolor
\fi
\let\postprocessframebox\relax
\pack_framed_do_setups
\localstrut
\doformatonelinerbox}
%D On the next page we show some examples of how these macros come into action. The
%D examples show us how \type {fit}, \type {broad} dimensions influence the
%D formatting. Watch the visualized struts. \footnote {Here we used \type
%D {\showstruts}.}
%D
%D \startpostponing
%D \bgroup
%D \showstruts
%D \dontcomplain
%D \starttabulate[|c|c|c|c|c|c|]
%D % \HL
%D \NC \framed[width=.2\hsize, height=.2\hsize, align=] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=broad, align=] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=fit, align=] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=.2\hsize, align=] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=broad, align=] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=fit, align=] {a\endgraf b\endgraf c}
%D \NC \NR
%D % \HL
%D \NC \framed[width=.2\hsize, height=.2\hsize, align=yes] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=broad, align=yes] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=fit, align=yes] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=.2\hsize, align=yes] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=broad, align=yes] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=fit, align=yes] {a\endgraf b\endgraf c}
%D \NC \NR
%D % \HL
%D \NC \framed[width=.2\hsize, height=.2\hsize, align=right] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=broad, align=right] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=fit, align=right] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=.2\hsize, align=right] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=broad, align=right] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=fit, align=right] {a\endgraf b\endgraf c}
%D \NC \NR
%D % \HL
%D \NC \framed[width=.2\hsize, height=.2\hsize, align=left] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=broad, align=left] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=fit, align=left] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=.2\hsize, align=left] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=broad, align=left] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=fit, align=left] {a\endgraf b\endgraf c}
%D \NC \NR
%D % \HL
%D \NC \framed[width=.2\hsize, height=.2\hsize, align=middle] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=broad, align=middle] {a\endgraf b\endgraf c}
%D \NC \framed[width=.2\hsize, height=fit, align=middle] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=.2\hsize, align=middle] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=broad, align=middle] {a\endgraf b\endgraf c}
%D \NC \framed[width=fit, height=fit, align=middle] {a\endgraf b\endgraf c}
%D \NC \NR
%D % \HL
%D \stoptabulate
%D \egroup
%D \stoppostponing
%D \macros
%D {framednoflines, framedlastlength}
%D
%D It is possible to let the frame macro calculate the width of a centered box
%D automatically (\type {fit}). When doing so, we need to reshape the box:
\newcount\framednoflines
\newdimen\framedfirstheight
\newdimen\framedlastdepth
\newdimen\framedminwidth
\newdimen\framedmaxwidth
\newdimen\framedaveragewidth
\def\pack_framed_reshape_reset
{\framednoflines \zerocount
\framedfirstheight \zeropoint
\framedlastdepth \zeropoint
\framedminwidth \zeropoint
\framedmaxwidth \zeropoint
\framedaveragewidth\zeropoint}
\def\pack_framed_reshape_process{\ifvbox\b_framed_normal\ctxcommand{doreshapeframedbox(\number\b_framed_normal)}\fi}
\def\pack_framed_reshape_analyze{\ifvbox\b_framed_normal\ctxcommand{doanalyzeframedbox(\number\b_framed_normal)}\fi}
% torture test / strange case (much depth) / method 2 needed
%
% \startTEXpage[frame=on]
% \startformula \startalign \NC A \NC B \NR \intertext{test} \NC C \NC D \NR \stopalign \stopformula
% test outside formula
% \startformula \startalign \NC A \NC B \NR \intertext{test} \NC C \NC D \NR \stopalign \stopformula
% \blank[big]
% \startformula \startalign \NC \int_01 \NC B \NR \intertext{test} \NC \int_01 \NC D \NR \stopalign \stopformula
% test outside formula
% \startformula \startalign \NC \int_01 \NC B \NR \intertext{test} \NC \int_01 \NC D \NR \stopalign \stopformula
% \stopTEXpage
%D The examples on the next page show how one can give the frame as well as the
%D background an additional offset and even a bit more depth. The blue outline is
%D the frame, the red box is the background and the small black outline is the
%D visualization of the resulting box, that is, we applied \type {\ruledhbox} to
%D the result.
%D
%D \startpostponing
%D \bgroup
%D \unprotect
%D \dontcomplain
%D
%D \startbuffer
%D \vbox to \vsize
%D \bgroup
%D \startalignment[middle]
%D \vss
%D \dontleavehmode\vbox to .8\vsize
%D \bgroup
%D \hsize=300pt
%D \setupframed
%D [background=color,
%D backgroundcolorachtergrondkleur=darkred,
%D width=300pt,
%D height=60pt,
%D framecolorkaderkleur=DemoBlue,
%D rulethickness=2pt]
%D \def\status%
%D {backgroundoffset=\the\dimexpr\framedparameter\c!backgroundoffset\relax\\
%D frameoffset=\the\dimexpr\framedparameter\c!frameoffset\relax\\
%D depth=\the\dimexpr\framedparameter\c!depth\relax}
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=0pt,frameoffset=0pt]{\status}}
%D \vss
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=5pt,frameoffset=0pt]{\status}}
%D \vss
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=0pt,frameoffset=5pt]{\status}}
%D \vss
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=2pt,frameoffset=5pt]{\status}}
%D \vss
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=5pt,frameoffset=2pt]{\status}}
%D \vss
%D \dontleavehmode \ruledhbox{\framed[backgroundoffset=5pt,frameoffset=5pt]{\status}}
%D \egroup
%D \vss
%D \stopalignment
%D \egroup
%D \stopbuffer
%D
%D \getbuffer \page
%D
%D {\setupframed[depth=4pt]\getbuffer} \page
%D
%D \protect
%D \egroup
%D \stoppostponing
%D We can draw lines from left to right and top to bottom by using the normal \type
%D {\hairline} command. Both directions need a different treatment.
%D
%D \startbuffer
%D \framed[width=4cm] {alfa\hairline beta\hairline gamma}
%D \framed[height=2cm] {alfa\hairline beta\hairline gamma}
%D \framed[width=4cm,height=2cm]{alfa\hairline beta\hairline gamma}
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlinecorrection
%D \hbox{\getbuffer}
%D \stoplinecorrection
%D
%D These macros try to adapt their behaviour as good as possible to the circumstances
%D and act as natural as possible.
\unexpanded\def\pack_framed_vboxed_hairline % nasty overlay mess .. needed for autowidth
{\begingroup
\scratchoffset\ifconditional\c_framed_has_offset \localoffset \else \zeropoint \fi
\scratchwidth \dimexpr\scratchoffset+\d_framed_linewidth\relax
\par
\nointerlineskip
\kern\scratchoffset
\dontleavehmode
\hrule\s!height\d_framed_linewidth\s!depth\zeropoint
\par
\kern-\d_framed_linewidth
\dontleavehmode
\hbox to \zeropoint{\normalhss\vrule\s!height\d_framed_linewidth\s!depth\zeropoint\s!width\scratchwidth}%
\hfill
\hbox to \zeropoint{\vrule\s!height\d_framed_linewidth\s!depth\zeropoint\s!width\scratchwidth\normalhss}%
\par
\nointerlineskip
\kern\scratchoffset
\nointerlineskip
\endgraf
\nointerlineskip
\localbegstrut
\endgroup}
\unexpanded\def\pack_framed_hboxed_hairline % use framed dimen
{\bgroup
\scratchoffset\ifconditional\c_framed_has_offset \localoffset \else \zeropoint \fi
\ifconditional\c_framed_has_height
\dimen\scratchheight\dimexpr\localheight/\plustwo+\strutdp-\plustwo\d_framed_linewidth\relax
\dimen\scratchdepth \dimexpr\localheight/\plustwo-\strutdp+\plustwo\d_framed_linewidth\relax
\else
\dimen\scratchheight\dimexpr\strutht+\scratchoffset\relax
\dimen\scratchdepth \dimexpr\strutdp+\scratchoffset\relax
\fi
\unskip
\setbox\scratchbox\hbox
{\hskip\scratchoffset
\vrule\s!height\dimen\scratchheight\s!depth\dimen\scratchdepth\s!width\d_framed_linewidth
\hskip\scratchoffset}%
\ht\scratchbox\strutht
\dp\scratchbox\strutdp
\box\scratchbox
\ignorespaces
\egroup}
%D The argument of the frame command accepts \type{\\} as a sort of newline signal. In
%D horizontal boxes it expands to a space.
\unexpanded\def\pack_framed_vboxed_newline
{\endgraf\ignorespaces}
\unexpanded\def\pack_framed_hboxed_newline
{\unskip\normalspace\ignorespaces}
%D We can set each rule on or off. The default setting is inherited from
%D \type {frame}. An earlier implementation use a bit different approach, but the new
%D one seems more natural:
%D
%D \bgroup
%D \setuptyping[margin=0pt]
%D \startlinecorrection
%D \startbuffer
%D \framed[offset=overlay,frame=on]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D
%D \startbuffer
%D \framed[offset=overlay,frame=on,bottomframe=off]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D
%D \startbuffer
%D \framed[offset=overlay,frame=on,bottomframe=on]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D
%D \startbuffer
%D \framed[offset=overlay,frame=off]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D
%D \startbuffer
%D \framed[offset=overlay,frame=off,bottomframe=off]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D
%D \startbuffer
%D \framed[offset=overlay,frame=off,bottomframe=on]{\darkred\blackrule}
%D \stopbuffer
%D \hbox{\getbuffer\vbox{\typebuffer}}
%D \stoplinecorrection
%D \egroup
%D \macros
%D {startframedtext, setupframedtexts, defineframedtext}
%D
%D The general framing command we discussed previously, is not entirely suited for
%D what we call framed texts, as for instance used in intermezzo's. The next
%D examples show what we have in mind.
%D
%D \startbuffer[framed-0]
%D \setupframedtexts
%D [frame=off,
%D width=\hsize,
%D background=screen]
%D
%D \startframedtext
%D By default the framed text is centered \dots
%D \stopframedtext
%D
%D \startframedtext[right]
%D \dots\ but we can also align left, middle and right.
%D \stopframedtext
%D \stopbuffer
%D
%D \startbuffer[framed-1]
%D \defineframedtext
%D [Example]
%D [width=6cm,
%D height=5cm]
%D
%D \startExample
%D \typebuffer[framed-1]
%D \stopExample
%D \stopbuffer
%D
%D \startbuffer[framed-2]
%D \defineframedtext
%D [Example]
%D [width=6cm]
%D
%D \startExample
%D \typebuffer[framed-2]
%D \stopExample
%D \stopbuffer
%D
%D \startbuffer[framed-3]
%D \defineframedtext
%D [Example]
%D [height=5cm]
%D
%D \startExample
%D \typebuffer[framed-3]
%D \stopExample
%D \stopbuffer
%D
%D \startbuffer[framed-4]
%D \defineframedtext
%D [Example]
%D [width=fit,height=broad]
%D
%D \Example{a very exciting example}
%D \stopbuffer
%D
%D \bgroup \setuptyping[margin=0pt] \getbuffer[framed-0] \egroup
%D \bgroup \setuptyping[margin=0pt] \getbuffer[framed-1] \egroup
%D \bgroup \setuptyping[margin=0pt] \getbuffer[framed-2] \egroup
%D \bgroup \setuptyping[margin=0pt] \getbuffer[framed-3] \egroup
%D \bgroup \setuptyping[margin=0pt] \getbuffer[framed-4] \egroup
%D
%D Here we can see that we have a predefined framed text class as well as the
%D tools for defining our own. So we have:
%D
%D \showsetup{setupframedtexts}
%D
%D as well as the definition command:
%D
%D \showsetup{defineframedtext}
%D
%D that generates two commands:
%D
%D \showsetup{start<<framedtext>>}
%D \showsetup{<<framedtext>>}
%D
%D The next definition shows the defaults.
\installcorenamespace{framedtext}
\installcorenamespace{framedtextlocation}
\installframedcommandhandler \??framedtext {framedtext} \??framedtext
\let\setupframedtexts\setupframedtext
\setupframedtext
[\c!width=.75\hsize,
\c!height=\v!fit,
\c!align=\v!yes,
%\c!top=,
\c!bottom=\vfill,
\c!offset=1em,
%\c!bodyfont=,
%\c!style=,
%\c!color=,
%\c!left=,
\c!right=\hfill,
\c!before=\blank,
\c!after=\blank,
%\c!inner=,
\c!frame=\v!on,
%\c!topframe=,
%\c!bottomframe=,
%\c!leftframe=,
%\c!rightframe=,
\c!radius=.5\bodyfontsize,
\c!corner=\v!rectangular,
%\c!orientation=,
%\c!indenting=,
%\c!foregroundcolor=,
%\c!foregroundstyle=,
%\c!background=,
%\c!backgroundcolor=,
\c!backgroundscreen=\defaultbackgroundscreen,
\c!linecorrection=\v!on,
\c!depthcorrection=\v!on,
\c!margin=\v!standard]
\appendtoks
\setuevalue{\e!start\currentframedtext}{\pack_framed_text_start {\currentframedtext}}%
\setuevalue{\e!stop \currentframedtext}{\pack_framed_text_stop }%
\setuevalue {\currentframedtext}{\pack_framed_text_direct{\currentframedtext}}%
\to \everydefineframedtext
\setvalue{\??framedtextlocation\v!left }{\letframedtextparameter\c!left \relax
\letframedtextparameter\c!right\hfill}
\setvalue{\??framedtextlocation\v!right }{\letframedtextparameter\c!left \hfill
\letframedtextparameter\c!right\relax}
\setvalue{\??framedtextlocation\v!middle}{\letframedtextparameter\c!left \hfill
\letframedtextparameter\c!right\hfill}
\setvalue{\??framedtextlocation\v!none }{\letframedtextparameter\c!left \relax
\letframedtextparameter\c!right\relax
\settrue\c_framed_text_location_none}
\unexpanded\def\pack_framed_text_start#1%
{\bgroup
\edef\currentframedtext{#1}%
\dodoubleempty\pack_framed_text_start_indeed}
\def\pack_framed_text_start_indeed[#1][#2]%
{\doifassignmentelse{#1}
{\pack_framed_text_start_continue\empty{#1}}
{\pack_framed_text_start_continue{#1}{#2}}}
\def\pack_framed_text_start_continue#1#2%
{\setupframedtexts[\currentframedtext][#2]%
\doifsomething{#1}{\setframedtextparameter\c!location{#1}}% does not listen to #3
\setfalse\c_framed_text_location_none
\csname\??framedtextlocation\framedtextparameter\c!location\endcsname
\resetframedtextparameter\c!location
\pack_framed_text_check
\setbox\b_framed_normal\vbox
\startboxedcontent
\hsize\localhsize
% \insidefloattrue % ? better
\normalexpanded{\switchtobodyfont[\framedtextparameter\c!bodyfont]}%
\letframedtextparameter\c!strut\v!no
\inheritedframedtextframed\bgroup
\let\\=\endgraf
\framedtextparameter\c!inner % oud spul
\doif{\framedtextparameter\c!depthcorrection}\v!on\pack_framed_text_start_depth_correction
\doinhibitblank
\setupindenting[\framedtextparameter\c!indenting]%
\useframedtextstyleandcolor\c!style\c!color}
%D The \type {none} option is handy for nested usage, as in the presentation
%D styles, where we don't want interference.
\defineplacement[\??framedtext][\s!parent=\??framedtext\currentframedtext]
\unexpanded\def\pack_framed_text_stop % no \baselinecorrection, see faq docs
{\endgraf
\removelastskip
\doif{\framedtextparameter\c!depthcorrection}\v!on\pack_framed_text_stop_depth_correction
\stopboxedcontent
\ifconditional\c_framed_text_location_none
\egroup
\box\b_framed_normal
\else\ifinsidefloat
\egroup
\box\b_framed_normal
\else
\egroup
\placement[\??framedtext][\c!depthcorrection=\v!off]{\box\b_framed_normal}%
\fi\fi
\egroup}
%D We define the general (and original) case by just saying:
\def\pack_framed_text_check % messy dependency
{\localhsize\hsize
\ifinsidefloat \else \ifdim\d_page_sides_vsize>\zeropoint % also possible: \c_page_sides_checks_done>\zeropoint
% \strut % rather clean way to invoke the sidefloat OTR
% \setbox0=\lastbox % and get the widths set, so from now on we
% \setlocalhsize % can have framed texts alongside sidefloats
\checksidefloat
\setlocalhsize
\fi \fi}
\def\pack_framed_text_start_depth_correction
{\bgroup
\ifhmode
\par
\fi
\ifvmode
\verticalstrut
% we need \nowhitespace in case of setups setting whitespace
% nb, not safe, text vs \vbox as next
\vskip-\struttotal
\nowhitespace
\fi} % na vskip ! new 20/05/2004, fails with next content being box (\scale{..})
\def\pack_framed_text_stop_depth_correction
{\ifhmode
\par
\fi
\ifvmode
\forgetall
\vskip-\struttotal
\verticalstrut
\egroup
\forgetall % brrr too often
\vskip-\lineheight
\verticalstrut
\else
\egroup
\fi}
%D Placement can be ignored:
%D
%D \starttyping
%D \hbox to \hsize \bgroup
%D \startframedtext[none][width=.5\textwidth] \input tufte \stopframedtext
%D \startframedtext[none][width=.5\textwidth] \input zapf \stopframedtext
%D \egroup
%D
%D \hbox to \hsize \bgroup
%D \setupframedtexts[location=none]%
%D \startframedtext[width=.5\textwidth] \input zapf \stopframedtext
%D \startframedtext[width=.5\textwidth] \input tufte \stopframedtext
%D \egroup
%D \stoptyping
%D The simple brace (or group) delimited case is typeset slightly different
%D and is not aligned.
\unexpanded\def\pack_framed_text_direct#1%
{\bgroup
\edef\currentframedtext{#1}%
\dosingleempty\pack_framed_text_start_direct}
\def\pack_framed_text_start_direct[#1]%
{\normalexpanded{\switchtobodyfont[\framedtextparameter\c!bodyfont]}%
\letframedtextparameter\c!strut\v!no
\iffirstargument
\setupcurrentframedtext[#1]%
\fi
\inheritedframedtextframed\bgroup
\blank[\v!disable]%
\let\\=\endgraf
\framedtextparameter\c!inner
\useframedtextstyleandcolor\c!style\c!color
\bgroup
\aftergroup\pack_framed_text_stop_direct
\let\next=}
\def\pack_framed_text_stop_direct
{\removelastskip
\egroup
\egroup}
\defineframedtext
[\v!framedtext]
%D \macros
%D {defineframed}
%D
%D One can also define simple framed texts, using:
%D
%D \showsetup{defineframed}
%D
%D As suggested by Wolfgang we can now use the new \MKIV\ inheritance model instead
%D of passing a combination of arguments. This also also simplified the \type
%D {\setupframed} command. There are certainly more places where such improvements
%D can be made.
\appendtoks
\ifcsname\??regularframedlevel\currentframed\endcsname
% already defined, keeps settings
\else
\expandafter\newcount\csname\??regularframedlevel\currentframed\endcsname
\fi
\to \everypresetframed
\appendtoks
\setuevalue\currentframed{\pack_framed_defined_process[\currentframed]}%
\to \everydefineframed
\newcount\c_temp_framed_crap
\unexpanded\def\pack_framed_defined_process[#1]% official (not much checking, todo: parent)
{\bgroup
\ifcsname\??regularframedlevel#1\endcsname
\expandafter\let\expandafter\c_pack_framed_temp\csname\??regularframedlevel#1\endcsname
\else
\let\c_pack_framed_temp\c_temp_framed_crap
\fi
\advance\c_pack_framed_temp\plusone
\expandafter\def\csname\??framed#1>\the\c_pack_framed_temp:\s!parent\endcsname{\??framed#1}% \inheritlocalframed
\bgroup
\edef\currentframed{#1>\the\c_pack_framed_temp}%
\pack_framed_initialize
\dosingleempty\pack_framed_defined_process_indeed}
\def\pack_framed_defined_process_indeed[#1]%
{\iffirstargument % faster
\setupcurrentframed[#1]% here !
\fi
\pack_framed_process_indeed}
\let\placeframed\pack_framed_defined_process % new per 2012/04/23
%D We can do:
%D
%D \starttyping
%D \defineframed[\v!framed]
%D \stoptyping
%D
%D but the existing one is ok as well (less csname messy too).
%D New, for the moment private; let's see when GB finds out about this one and its
%D obscure usage. It's used in:
%D
%D \startbuffer
%D \defineframedtext
%D [tabulateframe]
%D [offset=overlay,
%D backgroundoffset=3pt,
%D background=color,
%D backgroundcolor=green]
%D
%D \setuptabulate
%D [tabulate]
%D [frame=tabulateframe]
%D
%D \setuptables
%D [frame=tabulateframe]
%D
%D \input tufte
%D
%D \starttabulate[|l|l|]
%D \NC test \NC test \NC \NR \NC test \NC test \NC \NR
%D \NC test \NC test \NC \NR \NC test \NC test \NC \NR
%D \stoptabulate
%D
%D \input tufte
%D
%D \starttable[|l|l|]
%D \NC test \NC test \NC \AR \NC test \NC test \NC \AR
%D \NC test \NC test \NC \AR \NC test \NC test \NC \AR
%D \stoptable
%D \stopbuffer
%D
%D \typebuffer
\installcorenamespace{framedcontent}
\installframedcommandhandler \??framedcontent {framedcontent} \??framedcontent
\setupframedcontent
[\c!leftoffset=\zeropoint,
%\c!rightoffset=\framedcontentparameter\c!leftoffset,
\c!rightoffset=\scratchleftoffset,
\c!topoffset=\zeropoint,
%\c!bottomoffset=\framedcontentparameter\c!topoffset,
\c!bottomoffset=\scratchtopoffset,
\c!strut=\v!no,
%\c!linecorrection=\v!no,
%\c!left=,
%\c!right=,
%\c!width=\v!fit,
\c!offset=\v!overlay]
\unexpanded\def\startframedcontent
{\dosingleempty\pack_framed_start_content}
\def\pack_framed_start_content[#1]%
{\bgroup
\edef\currentframedcontent{#1}%
\ifx\currentframedcontent\v!off
\let\stopframedcontent\egroup
\else
\let\stopframedcontent\pack_framed_stop_content_indeed
\expandafter\pack_framed_start_content_indeed
\fi}
\def\pack_framed_start_content_indeed
{\setbox\b_framed_normal\hbox\bgroup
\setlocalhsize
\hsize\localhsize
\scratchleftoffset \framedcontentparameter\c!leftoffset \relax
\scratchrightoffset \framedcontentparameter\c!rightoffset \relax
\scratchtopoffset \framedcontentparameter\c!topoffset \relax
\scratchbottomoffset\framedcontentparameter\c!bottomoffset\relax
\advance\hsize\dimexpr-\scratchleftoffset-\scratchrightoffset \relax
\advance\vsize\dimexpr-\scratchtopoffset -\scratchbottomoffset\relax
\hskip\scratchleftoffset
\vbox\bgroup
\vskip\scratchtopoffset
\vbox\bgroup
\forgetall
\blank[\v!disable]}
\def\pack_framed_stop_content_indeed
{\removelastskip
\egroup
\vskip\scratchbottomoffset
\egroup
\hskip\scratchrightoffset
\egroup
\doif{\framedcontentparameter\c!width}\v!fit
{\letframedcontentparameter\c!width\v!fixed}% no shapebox
\ifinsidefloat
\donefalse
\else
\doifelse{\framedcontentparameter\c!linecorrection}\v!yes\donetrue\donefalse
\fi
% plaats ?
\ifdone\startlinecorrection\fi
\framedcontentparameter\c!left % new
\inheritedframedcontentframed{\box\b_framed_normal}% hm
\framedcontentparameter\c!right % new
\ifdone\stoplinecorrection\fi
\egroup}
% A shared setting.
\setuplinewidth
[\v!medium]
\protect \endinput
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