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%D \module
%D [ file=scrn-nav,
%D version=1998.01.15,
%D title=\CONTEXT\ Screen Macros,
%D subtitle=Navigation,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%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 Screen Macros / Navigation}
\unprotect
%D Support for interactive document is very present in
%D \CONTEXT\ and interwoven in many modules. This means that in
%D this module, where we deal with some common navigational
%D features, there will be quite some forward references.
%D
%D The current support in \MKIV\ is mostly the same as in
%D \MKII\ and the old files have some more detailed
%D (sometimes historic) information.
%D There is no interaction at all unless enabled by saying:
%D
%D \starttyping
%D \setupinteraction[state=start]
%D \stoptyping
%D
%D The other settings are:
%D
%D \showsetup{setupinteraction}
% use with care, no checking done
\def\setinteractionparameter#1#2%
{\expandafter\def\csname\??ia#1\endcsname{#2}}
\def\resetinteractionparameter#1%
{\expandafter\let\csname\??ia#1\endcsname\empty}
\newtoks\everysetupinteraction
\unexpanded\def\setupinteraction
{\dosingleargument\dodosetupinteraction}
\def\dodosetupinteraction[#1]% % \dosetupinteraction == special
{\getparameters[\??ia][#1]%
\the\everysetupinteraction}
% todo, move partial append to where the action happens
\appendtoks
\doifelse\@@iastate\v!start
{\iflocation\else
\showmessage\m!interactions2{\ifusepagedestinations\space(PAGE)\fi}%
\global\locationtrue
\fi}%
{\iflocation
\showmessage\m!interactions3{\ifusepagedestinations\space(PAGE)\fi}%
\global\locationfalse
\fi}%
\iflocation
\setsystemmode \v!interaction
\else
\resetsystemmode\v!interaction
\fi
\doifsomething\@@iacalculate
{\doregistercalculationset\@@iacalculate}%
\doifelse\@@iastrut \v!yes \settrue \setfalse \uselocationstrut
\doifelse\@@iaclick \v!yes \settrue \setfalse \highlighthyperlinks
\doifelse\@@iadisplay\v!new \settrue \setfalse \gotonewwindow
\doifelse\@@iapage \v!yes \settrue \setfalse \usepagedestinations
\to \everysetupinteraction
\def\synchronizebackendidentity
{\ctxlua{backends.codeinjections.setupidentity{
title = \!!bs\@@iatitle\!!es,
subject = \!!bs\@@iasubtitle\!!es,
author = \!!bs\@@iaauthor\!!es,
creator = \!!bs ConTeXt - \contextversion\!!es,
date = \!!bs\@@iadate\!!es,
keywords = \!!bs\@@iakeyword\!!es,
}}}
\appendtoks
\synchronizebackendidentity
\to \everyfirstshipout
%D We have to make sure of some settings:
\def\dolocationstartup
{\iflocation
\donefalse
\ifx\@@iaopenaction\empty \else \donetrue
\ctxlua{structures.references.checkopendocumentactions("\@@iaopenaction")}%
\ctxlua{structures.references.expandcurrent()}%
\fi
\ifx\@@iacloseaction\empty \else \donetrue
\ctxlua{structures.references.checkclosedocumentactions("\@@iacloseaction")}%
\ctxlua{structures.references.expandcurrent()}%
\fi
\ifdone
\ctxlua{structures.references.flushdocumentactions()}%
\fi
\global\let\dolocationstartup\relax
\fi}
\def\dolocationpagecheck
{\iflocation
\donefalse
\ifx\@@iaopenpageaction\empty \else \donetrue
\ctxlua{structures.references.checkopenpageactions("\@@iaopenpageaction")}%
\ctxlua{structures.references.expandcurrent()}%
\fi
\ifx\@@iaclosepageaction\empty \else \donetrue
\ctxlua{structures.references.checkclosepageactions("\@@iaclosepageaction")}%
\ctxlua{structures.references.expandcurrent()}%
\fi
\ifdone
\ctxlua{structures.references.flushpageactions()}%
\fi
\fi}
\appendtoks \dolocationstartup \to \everyshipout
\appendtoks \dolocationpagecheck \to \everyshipout
%D As long as there a natural feeling of what can be considered
%D hyper active or not, we have to tell users where they can
%D possibly click. We've already seen a few macros that deal
%D with this visualization, something we definitely do not let
%D up to the viewer. One way of telling is using a distinctive
%D typeface, another way is using color.
%D
%D There are two colors involved: one for normal hyperlinks,
%D and one for those that point to the currentpage, the
%D contrast color.
\definecolor [interactioncolor] [r=0, g=.6, b=0]
\definecolor [interactioncontrastcolor] [r=.8, g=0, b=0]
\definecolor [interactiekleur] [interactioncolor]
\definecolor [interactiecontrastkleur] [interactioncontrastcolor]
%D The next few macros are responsible for highlighting hyper
%D links. The first one, \type{\showlocation}, is used in those
%D situations where the typeface is handled by the calling
%D macro.
%D When we're dealing with pure page references, contrast
%D colors are used when we are already at the page mentioned.
\def\setlocationcolor#1% not grouped !
{\ifnum\referencepagestate=\plusone
\edef\askedcontrastcolor{\csname#1\c!contrastcolor\endcsname}%
\ifx\askedcontrastcolor\empty
\dosetcolorattribute{#1}\c!color
\else
\dosetcolorattribute{#1}\c!contrastcolor
\fi
\else % we could just set and if > 0 set again
\dosetcolorattribute{#1}\c!color
\fi}
\def\setlocationfont#1%
{\dosetfontattribute{#1}\c!style}
\def\setlocationattributes#1%
{\ifnum\referencepagestate=\plusone
\edef\askedcontrastcolor{\csname#1\c!contrastcolor\endcsname}%
\ifx\askedcontrastcolor\empty
\dosetcolorattribute{#1}\c!color
\else
\dosetcolorattribute{#1}\c!contrastcolor
\fi
\else % we could just set and if > 0 set again
\dosetcolorattribute{#1}\c!color
\fi
\dosetfontattribute{#1}\c!style}
\def\setlocationcolorspec#1% \resolver
{\ifnum\referencepagestate=\plusone
\edef\askedcontrastcolor{#1\c!contrastcolor}%
\ifx\askedcontrastcolor\empty
\doactivatecolor{#1\c!color}%
\else
\doactivatecolor\askedcontrastcolor
\fi
\else
\doactivatecolor{#1\c!color}%
\fi}
%D delayed ...
\def\enableinteractivereferences
{\ifproductionrun
\ctxlua{structures.references.enableinteraction()}%
\globallet\enableinteractivereferences\relax
\fi}
\appendtoks
\enableinteractivereferences
\to \everysetupinteraction
%D More tokens are spend when we want both typeface and color
%D highlighting.
\def\@@iatimestamp
{\the\normalyear
\ifnum\normalmonth<10 0\fi\the\normalmonth
\ifnum\normalday <10 0\fi\the\normalday}
\setupinteraction % start fit page and reset form
[\c!state=\v!stop,
\c!page=\v!no,
\c!click=\v!yes,
\c!openaction=,
\c!closeaction=,
\c!openpageaction=,
\c!closepageaction=,
\c!display=\v!normal,
\c!focus=\v!fit,
\c!menu=\v!off,
\c!style=\v!bold,
\c!calculate=,
\c!strut=\v!yes,
\c!split=\v!yes,
\c!color=interactioncolor,
\c!contrastcolor=interactioncontrastcolor,
\c!symbolset=,
\c!width=1em,
\c!height=\!!zeropoint,
\c!depth=\!!zeropoint,
\c!title=\jobname, % needed for fdf/x
\c!subtitle=,
\c!author=,
\c!keyword=,
\c!date=\@@iatimestamp]
%D XMP support:
\setupinteraction
[xmpfile=]
\appendtoks
% this will move as it is a backend issue
\doifsomething\@@iaxmpfile
{\ctxlua{if lpdf then lpdf.setxmpfile("\@@iaxmpfile") end}%
\globallet\@@iaxmpfile\empty}%
\to \everysetupinteraction
\protect \endinput
|
