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-%D \module
-%D [ file=s-present-dark, % tug-2001
-%D version=2018.09.25, % 2000.*.*
-%D title=\CONTEXT\ Style File,
-%D subtitle=Presentation Environment Dark,
-%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.
-
-\startmodule[present-dark]
-
-%D The original document dates from 2000 and was meant for a presentation at \TUG\
-%D 2001. It used widgets and in particular check fields and push buttons.
-%D \JAVASCRIPT\ was used to show or hide them when rolling over, and appearances
-%D changed in a subtle way. It actually worked quite well at that time.
-%D
-%D However, over time these widgets proved to be sort of unstable. For instance we
-%D used the parent|-|child model of which (inheritance and appearance) behaviour
-%D changed over time. We're talking of a few decades ago when \TEX\ was one of the
-%D few (maybe only) tools that could actually support everything that the manual
-%D introduced: the \quote {standard} seemed to be ahead of the viewer. Anyway, we
-%D adapted but it meant that old document in principle were not always future proof.
-%D
-%D We used in this document a push button in the background of the menu so that it
-%D could become visible when rolled over. There were no layers in \PDF\ at that
-%D time! Nowadays such a trick doesn't work well because of the way a viewer
-%D intercepts regions. One gets kind of erratic behaviour when applying \JAVASCRIPT.
-%D
-%D I spent quite some time to test if we could still do the same without side
-%D effects and in the process also noticed that some functionality in \JAVASCRIPT\
-%D seems broken (or changed due to maybe security issues). So, in the end I decided
-%D to simplify the approach and use layers to pop up the menu when the mouse goes
-%D over it but no longer hide it when the mouse leaves that area. It just doesn't
-%D work too well otherwise.
-
-%D We start with the layout. We basically have three areas: edge, margin and text.
-%D Each are more or less the same width.
-
-\setuppapersize
- [S6][S6]
-
-\setuplayout
- [backspace=380pt,
- topspace=20pt,
- leftedge=100pt,
- leftedgedistance=10pt,
- leftmargin=230pt,
- leftmargindistance=20pt,
- header=0pt,
- footer=0pt,
- width=200pt,
- backspace=360pt,
- width=220pt,
- leftmargin=210pt,
- height=middle]
-
-%D The bodyfont is the Latin Modern Variable (of course at that time we used
-%D the Computer Modern predecessors). We still apply protrusion and expansion.
-%D The new \quotation {Modern Latin} look also works ok on screen.
-
-\definefontfeature
- [default]
- [default]
- [expansion=pure,
- protrusion=pure]
-
-\setupalign
- [verytolerant,stretch,hanging] % space
-
-\setupbodyfont
- [modernvariable,11pt]
-
-% \setupbodyfont
-% [modernlatin,11pt]
-
-\setupinmargin
- [style=,
- color=]
-
-%D We use some predefined \JAVASCRIPT\ functions. These are rather old helpers.
-%D Normally only the libraries (sets of functions) that are used will be
-%D embedded.
-
-\useJSscripts[fld]
-\useJSscripts[nav]
-
-%D The remarks that will pop up. By default they are not visible. Clicking
-%D on the page (or menu item) will show them step by step.
-
-\newcounter\bofremarks
-\newcounter\nofremarks
-
-\setupfield
- [remark]
- [offset=overlay,
- option={readonly,hidden},
- color=,
- style=,
- frame=off]
-
-\defineframed
- [remarkable]
- [frame=off,
- backgroundcolor=white,
- background=RollBackground]
-
-\starttexdefinition unexpanded remark #1#2
-
- \doglobal\increment\nofremarks
-
- \definesymbol
- [remark:x:\nofremarks]
- [\remarkable{#1}]
-
- \definesymbol
- [remark:y:\nofremarks]
- [\remarkable{#2}]
-
- \definefield
- [remark:x:\nofremarks][check][remark]
- [remark:x:\nofremarks]
- [remark:x:\nofremarks]
-
- \definefield
- [remark:y:\nofremarks][check][remark]
- [remark:y:\nofremarks]
- [remark:y:\nofremarks]
-
- \inleft
- [scope=local]
- {
- \hpack to \hsize {
- \hss
- \linebox {
- \fitfield[remark:y:\nofremarks]
- }
- }
- }
-
- \bgroup
-
- \setbox\scratchbox\hbox {
- #1
- }
-
- \hpack to \wd\scratchbox {
- \wd\scratchbox\zeropoint
- \box\scratchbox
- \hss
- \linebox {
- \fitfield[remark:x:\nofremarks]
- }
- \hss
- }
-
- \egroup
-
-\stoptexdefinition
-
-%D We use lots of backgrounds. The \METAPOST\ graphics are a bit overkill
-%D but we keep them.
-
-\setupbackgrounds
- [text]
- [background=StepFields]
-
-\defineoverlay
- [StepFields]
- [\directsetup{syncrefs}\overlaybutton{ShowRemark}]
-
-\setupbackgrounds
- [page]
- [background=PageBackground]
-
-%D Just look in \type {java-imp-fld.mkiv} how \type {HideFields} and
-%D alike are defined. They are defined references to \JAVASCRIPT\ calls.
-
-\setupinteraction
- [state=start,
- click=no,
- menu=on,
- style=,
- color=,
- frame=off,
- contrastcolor=]
-
-\setupinteractionscreen
- [option=max]
-
-\setupbackgrounds
- [paper]
- [background=color,
- backgroundcolor=black]
-
-\defineoverlay
- [PageBackground]
- [\useMPgraphic{PageBackground}]
-
-\startuseMPgraphic{PageBackground}
- StartPage ;
- numeric w ; w := 1.25 * PaperWidth ;
- numeric n ; n := 2.50 * PageNumber ;
- numeric d ; d := (1 + (PageNumber-1)/5) * 5pt ;
- fill Page
- withcolor black ;
- for i=1 upto 500 :
- draw
- center Page
- randomized w
- rotatedaround(center Page,n)
- withpen pencircle
- scaled (uniformdeviate d)
- withcolor
- (yellow randomized (.3,.8))
- ;
- endfor ;
- StopPage ;
-\stopuseMPgraphic
-
-\defineoverlay
- [TextBackground]
- [\uniqueMPgraphic{TextBackground}]
-
-\startuniqueMPgraphic{TextBackground}
- fill
- OverlayBox
- withcolor black ;
- draw
- OverlayBox
- withpen pencircle scaled 1pt
- withcolor OverlayColor ;
-\stopuniqueMPgraphic
-
-\defineoverlay
- [RollBackground]
- [\uniqueMPgraphic{RollBackground}]
-
-\startuniqueMPgraphic{RollBackground}
- fill
- OverlayBox
- withcolor black ;
- draw
- OverlayBox
- withpen pencircle scaled 1pt
- withcolor OverlayColor ;
-\stopuniqueMPgraphic
-
-\setupinteractionmenu
- [left]
- [state=start,
- width=\leftedgewidth,
- frame=on,
- framecolor=white,
- rulethickness=1pt,
- foregroundcolor=white,
- background=RollBackground]
-
-\startsetups syncrefs
- \normalexpanded {
- \definereference
- [ShowRemark]
- [StepFields{remark:x,\bofremarks,\nofremarks},
- StepFields{remark:y,\bofremarks,\nofremarks}]
- }
-\stopsetups
-
-%D The menu buttons used to be rollover buttons but are now normal simple
-%D ones (more predictable).
-
-\defineviewerlayer
- [buttons]
-
-\startinteractionmenu[left]
- \vfill
- \directsetup{syncrefs}
- \startviewerlayer[buttons]
- \startbut [previouspage,HideFields] Previous \stopbut
- \startbut [nextpage,HideFields] Next \stopbut
- \startbut [ShowRemark] Remark \stopbut
- \startbut [HideFields] Reset \stopbut
- \startbut [CloseDocument,HideFields] Quit \stopbut
- \stopviewerlayer
-\stopinteractionmenu
-
-\setupinteraction
- [closeaction=ForgetChanges,
- openpageaction={HideFields,HideLayer{buttons}},
- closepageaction={HideFields,HideLayer{buttons}}]
-
-\defineoverlay
- [ShowMenu]
- [\overlayrollbutton{VideLayer{buttons}}{}]
-
-\setupbackgrounds
- [text][leftedge]
- [backgroundoffset=10pt,
- background=ShowMenu]
-
-%D The environment has been adapted a bit. Instead of taking two
-%D arguments we now use a key|-|value approach. The remark is shown
-%D when one rolls over the title (author).
-
-\defineframedtext
- [MainText]
- [frame=off,
- offset=10pt,
- width=\textwidth,
- before=,
- after=,
- color=,
- foregroundcolor=white,
- background=TextBackground,
- backgroundcolor=white]
-
-\starttexdefinition unexpanded StartIdea
- \dosingleempty{\texdefinition{StartIdeaIndeed}}
-\stoptexdefinition
-
-\starttexdefinition StartIdeaIndeed [#1]
- \let\bofremarks\nofremarks
- \increment\bofremarks
- \startstandardmakeup
- \setvariables[Idea][#1]
- \startMainText
- \setupalign[verytolerant,stretch,hanging]
-\stoptexdefinition
-
-\starttexdefinition unexpanded StopIdea
- \doifvariable {Idea} {text} {
- \blank
- \rightaligned {
- \doifelsevariable {Idea} {remark} {
- \tooltip
- [left]
- {\getvariable{Idea}{title}}
- {\getvariable{Idea}{remark}}
- } {
- \getvariable{Idea}{title}
- }
- }
- }
- \stopMainText
- \vfill
- \stopstandardmakeup
-\stoptexdefinition
-
-\stopmodule
-
-\continueifinputfile{s-present-dark.mkiv}
-
-\usemodule[present-common]
-
-\inputpresentationfile{tug/2001/tug-2001-ideas.tex}