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authorKarl Berry <karl@freefriends.org>2021-03-06 21:58:15 +0000
committerKarl Berry <karl@freefriends.org>2021-03-06 21:58:15 +0000
commit974640d66e61e81cb197ad96fdff7b08343e4c5a (patch)
tree2e1f75f32f312b7f24ba82b4590ae230bcd6f399 /Master/texmf-dist/tex/context/base/mkxl/anch-bar.mkxl
parentb4fa72e61230aca75f7f6fbf988821f71edfb6b2 (diff)
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git-svn-id: svn://tug.org/texlive/trunk@58167 c570f23f-e606-0410-a88d-b1316a301751
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+%D \module
+%D [ file=anch-bar,
+%D version=2003.03.16,
+%D title=\CONTEXT\ Anchoring Macros,
+%D subtitle=Margin Bars and alike,
+%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 Anchoring Macros / Margin Bars}
+
+\unprotect
+
+%D This can be done better now ...
+
+%D We will implement a sidebar mechanism using the functionality from
+%D \type {core-pos}.
+%D
+%D \starttyping
+%D \definesidebar[whow][rulecolor=green,distance=0pt]
+%D
+%D \input tufte \par
+%D \startsidebar
+%D \input tufte \par
+%D \input tufte \par
+%D \startsidebar[whow]
+%D \input tufte \par
+%D \input tufte \par
+%D \input tufte
+%D \stopsidebar \par
+%D \input tufte \par
+%D \input tufte
+%D \stopsidebar \par
+%D \input tufte \par
+%D \input tufte \par
+%D \startsidebar
+%D \input tufte \par
+%D \input tufte \par
+%D \input tufte \par
+%D \input tufte \par
+%D \input tufte
+%D \stopsidebar \par
+%D \input tufte \par
+%D \input tufte \par
+%D \startsidebar
+%D \input tufte
+%D \input tufte
+%D \input tufte
+%D \input tufte
+%D \input tufte
+%D \stopsidebar
+%D \stoptyping
+
+\installcorenamespace{sidebar}
+
+\installcommandhandler \??sidebar {sidebar} \??sidebar
+
+\newcount\c_anch_sidebars_n
+\newcount\c_anch_sidebars_current % local
+\newdimen\d_anch_sidebars_distance
+\newcount\c_anch_sidebars_level
+
+% \setupMPvariables
+% [mpos:sidebar]
+% [linecolor=red,
+% linewidth=2pt,
+% distance=5pt]
+
+\setupsidebar
+ [\c!rulethickness=\dimexpr\bodyfontsize/6\relax, % 2pt default
+ \c!rulecolor=\s!black,
+ \c!alternative=0,
+ \c!topoffset=\zeropoint,
+ \c!bottomoffset=\zeropoint,
+ \c!distance=.5\bodyfontsize,
+ \c!level=,
+ \c!leftmargindistance=\zeropoint]
+
+\aliased\let\setupsidebars\setupsidebar
+
+\permanent\tolerant\protected\def\startsidebar[#1]#*[#2]%
+ {\bgroup
+ \dontleavehmode
+ \advance\c_anch_sidebars_level\plusone
+ \global\advance\c_anch_sidebars_n\plusone
+ \c_anch_sidebars_current\c_anch_sidebars_n\relax % relax needed
+ \ifhastok={#1}%
+ \edef\currentsidebar{\the\c_anch_sidebars_level}%
+ \checksidebarparent
+ \setupcurrentsidebar[#1]%
+ \else
+ \def\currentsidebar{#1}%
+ \setupcurrentsidebar[#2]%
+ \fi
+ \scratchdistance\sidebarparameter\c!distance\relax
+ \scratchdimen\sidebarparameter\c!leftmargindistance\relax
+ \edef\m_level{\sidebarparameter\c!level}%
+ \ifempty\m_level
+ \ifnum\c_anch_sidebars_level=\plusone
+ \ifzeropt\scratchdimen
+ \advance\d_anch_sidebars_distance\scratchdistance\relax
+ \else
+ \d_anch_sidebars_distance\scratchdimen
+ \fi
+ \else
+ \advance\d_anch_sidebars_distance\scratchdistance\relax
+ \fi
+ \else
+ \ifnum\m_level=\plusone
+ \ifzeropt\scratchdimen
+ \advance\d_anch_sidebars_distance\scratchdistance\relax
+ \else
+ \d_anch_sidebars_distance\scratchdimen
+ \fi
+ \else
+ \d_anch_sidebars_distance\dimexpr\scratchdimen+\numexpr\m_level-\plusone\relax\dimexpr\scratchdistance\relax\relax
+ \fi
+ \fi
+ \startpositionoverlay{\v!text-1}%
+ \normalexpanded{\setMPpositiongraphicrange % maybe expand in definition
+ {b:sidebar:\the\c_anch_sidebars_n}%
+ {e:sidebar:\the\c_anch_sidebars_n}%
+ {mpos:sidebar}%
+ {self=sidebar:\the\c_anch_sidebars_n,
+ linewidth=\sidebarparameter\c!rulethickness,
+ linecolor=\sidebarparameter\c!rulecolor,
+ alternative=\sidebarparameter\c!alternative,
+ topoffset=\the\dimexpr\sidebarparameter\c!topoffset,
+ bottomoffset=\the\dimexpr\sidebarparameter\c!bottomoffset,
+ distance=\the\d_anch_sidebars_distance}%
+ }%
+ \stoppositionoverlay
+ \bpos{sidebar:\the\c_anch_sidebars_current}%
+ \ignorespaces}
+
+\permanent\protected\def\stopsidebar
+ {\removelastspace
+ \epos{sidebar:\the\c_anch_sidebars_current}
+ \carryoverpar\egroup}
+
+%D Let's keep this nice and simple (okay, we could pass the 6 variables in
+%D one lua call).
+
+\startMPpositionmethod{mpos:sidebar}
+ \startMPpositiongraphic{mpos:sidebar}{linecolor,linewidth,distance,alternative}%
+ anch_sidebars_draw (
+ \MPp\MPbself,\MPp\MPeself,\MPy\MPbself,\MPy\MPeself,\MPh\MPbself,\MPd\MPeself,
+ \MPx{\textanchor},\MPy{\textanchor},\MPw{\textanchor},\MPh{\textanchor},
+ \MPvar{alternative},\MPvar{distance},\MPvar{linewidth},\MPvar{linecolor},
+ \MPvar{topoffset}, \MPvar{bottomoffset}
+ ) ;
+ \stopMPpositiongraphic
+ \MPpositiongraphic{mpos:sidebar}{}%
+\stopMPpositionmethod
+
+%D We now reimplement the \MKII\ margin rules handler in a more
+%D modern way.
+%D
+%D \setupmarginrules
+%D [rulecolor=darkred,
+%D rulethickness=2pt]
+%D
+%D \setupmarginrules % sidebar
+%D [2]
+%D [rulecolor=darkblue]
+%D
+%D \startmarginrule[1]
+%D \input ward
+%D \startmarginrule[2]
+%D \input ward
+%D \startmarginrule[3]
+%D \input ward
+%D \startmarginrule[level=6,rulecolor=darkgreen]
+%D \input ward
+%D \stopmarginrule
+%D \input ward
+%D \stopmarginrule
+%D \input ward
+%D \stopmarginrule
+%D \input ward
+%D \stopmarginrule
+%D
+%D Compared to the old mechanism we now can pass settings too.
+
+\definesidebar
+ [\v!margin]
+ [\c!leftmargindistance=\dimexpr\leftmargindistance+\sidebarparameter\c!rulethickness/2\relax]
+
+\dorecurse{5}{\definesidebar[\v!margin:#1][\v!margin]} % let's be nice and predefine 5 levels
+
+\permanent\tolerant\protected\def\setupmarginrule[#1]#*[#2]%
+ {\ifarguments\or
+ \setupsidebar[\v!margin][#1]%
+ \or
+ \setupsidebar[\v!margin:#1][#2]%
+ \fi}
+
+\aliased\let\setupmarginrules\setupmarginrule
+
+\permanent\tolerant\protected\def\startmarginrule[#1]% pretty inefficient checking
+ {\edef\m_anch_marginrules_kind{#1}%
+ \ifempty\m_anch_marginrules_kind
+ \startsidebar[\v!margin][]%
+ \orelse\ifhastok={\m_anch_marginrules_kind}%
+ \startsidebar[\v!margin][#1]%
+ \else
+ \anch_marginrules_check{#1}%
+ \startsidebar[\v!margin:#1][\c!level=#1]%
+ \fi}
+
+\def\anch_marginrules_check#1%
+ {\doifnotcommandhandler\??sidebar{\v!margin:#1}{\definesidebar[\v!margin:#1][\v!margin]}}
+
+\aliased\let\stopmarginrule\stopsidebar
+
+\protect \endinput