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diff --git a/doc/context/sources/general/manuals/columnsets/columnsets.tex b/doc/context/sources/general/manuals/columnsets/columnsets.tex new file mode 100644 index 000000000..0cb95229d --- /dev/null +++ b/doc/context/sources/general/manuals/columnsets/columnsets.tex @@ -0,0 +1,886 @@ +% author : Hans Hagen +% copyright : PRAGMA ADE & ConTeXt Development Team +% license : Creative Commons Attribution ShareAlike 4.0 International +% reference : pragma-ade.nl | contextgarden.net | texlive (related) distributions +% origin : the ConTeXt distribution +% +% comment : Because this manual is distributed with TeX distributions it comes with a rather +% liberal license. We try to adapt these documents to upgrades in the (sub)systems +% that they describe. Using parts of the content otherwise can therefore conflict +% with existing functionality and we cannot be held responsible for that. Many of +% the manuals contain characteristic graphics and personal notes or examples that +% make no sense when used out-of-context. +% +% comment : Some chapters might have been published in TugBoat, the NTG Maps, the ConTeXt +% Group journal or otherwise. Thanks to the editors for corrections. Also thanks +% to users for testing, feedback and corrections. + +\dontcomplain + +\definepagebreak[mine][yes] + +% A complete otf optima pack is too expensive for this (I only have the +% type one set). +% +% \usetypescriptfile +% [type-ghz] +% +% \usetypescript +% [sans] +% [optima-nova] +% +% \setupbodyfont +% [optima-nova,11pt] +% +% \definefont[QuiteLarge][SansBold sa 3] +% \definefont[NotSoLarge][SansBold sa 1.5] +% +% So we could use: +% +% \setupbodyfont +% [pagella,11pt] +% +% \definefont[QuiteLarge][Bold sa 2.50] +% \definefont[NotSoLarge][Bold sa 1.25] +% +% But this one has a matching sans: + +\setupbodyfont + [dejavu,11pt] + +\definefont[QuiteLarge][SansBold sa 2.50] +\definefont[NotSoLarge][SansBold sa 1.25] + +\setuplayout + [backspace=.1\paperwidth, + topspace=.025\paperheight, + header=0.025\paperheight, + footer=0.025\paperheight, + headerdistance=0.025\paperheight, + footerdistance=0.025\paperheight, + width=middle, + height=middle] + +\setuppagenumbering + [alternative=doublesided, + location=] + +\setupwhitespace + [line] + +\setupblank + [line] + +\setuptyping + [blank=halfline] + +\startsetups [pagenumber] + \hbox to .2\paperwidth { + \hss + Page \pagenumber + \hss + } +\stopsetups + +\setupfooter [before=\vfill,after=\vfill,style=\bf,color=color-4] +\setupheader [before=\vfill,after=\vfill,style=\bf,color=color-4] + +\setupfootertexts [] [\setups{pagenumber}] +\setupheadertexts [] [\setups{chapterhead}] + +\startsetups [chapterhead] + \hbox to .2\paperwidth { + \hss + \getmarking[chapter] + \hss + } +\stopsetups + +\setuphead + [chapter] + [header=empty] + +\definecolor[color-1][.5(red,green)] +\definecolor[color-2][.5(green,blue)] +\definecolor[color-3][.5(blue,red)] +\definecolor[color-4][.5(white,black)] +\definecolor[color-5][.5(white,color-4)] +\definecolor[color-6][.2(white,color-4)] + +\startuseMPgraphic{page} +StartPage ; + path p ; + numeric n; n := PageNumber ; + numeric w; w := bbwidth(Page) ; + numeric h; h := bbheight(Page) ; + def DrawBit (expr bit, dx, dy) = + path p ; p := unitsquare xyscaled(w/5,h/40) shifted (dx*w/10,dy*(h-h/40)) ; + if n div bit > 0 : + n := n - (n div bit)*bit ; + fill p withcolor \MPcolor{color-1} ; + else : + fill p withcolor \MPcolor{color-2} ; + fi ; + enddef ; + DrawBit(32,7,1) ; + DrawBit(16,4,1) ; + DrawBit( 8,1,1) ; + DrawBit( 4,7,0) ; + DrawBit( 2,4,0) ; + DrawBit( 1,1,0) ; +StopPage ; +\stopuseMPgraphic + +\startuniqueMPgraphic{frame} + fill OverlayBox withcolor \MPcolor{color-5} ; +\stopuniqueMPgraphic + +\startuniqueMPgraphic{contrast} + fill OverlayBox withcolor \MPcolor{color-4} ; +\stopuniqueMPgraphic + +\defineoverlay[page] [\useMPgraphic{page}] +\defineoverlay[frame] [\useMPgraphic{frame}] +\defineoverlay[contrast][\useMPgraphic{contrast}] + +\setupexternalfigures + [background=frame] + +\definecombination + [sixpages] + [%inbetween=\blank, + style=mono, + distance=.5\bodyfontsize, + width=\textwidth] + +\definecombination + [fourpages] + [%inbetween=\blank, + style=mono, + distance=.5\bodyfontsize, + width=\textwidth] + +\definecombination + [twopages] + [style=mono] + +\definemeasure[twopages] [\dimexpr\dimexpr\textwidth-3 \bodyfontsize\relax/4\relax] +\definemeasure[fourpages] [\dimexpr\dimexpr\textwidth-3 \bodyfontsize\relax/4\relax] +\definemeasure[eightpages][\dimexpr\dimexpr\textwidth-3 \bodyfontsize\relax/4\relax] +\definemeasure[sixpages] [\dimexpr\dimexpr\textwidth-2.5\bodyfontsize\relax/6\relax] + +\starttexdefinition unexpanded OnePage #1 + \startlinecorrection[blank] + \startcombination[twopages][1*1] + {\typesetfile[#1.tex][page=1,lines=15]} {1} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded OneSpread #1 + \startlinecorrection[blank] + \startcombination[twopages][1*1] + {\typesetfile[#1.tex][page=2,lines=15]} {2} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded TwoPages #1 + \startlinecorrection[blank] + \startcombination[twopages][2*1] + {\typesetfile[#1.tex][page=1,width=\measure{twopages}]} {1} + {\typesetfile[#1.tex][page=2,width=\measure{twopages}]} {2} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded TwoSpread #1 + \startlinecorrection[blank] + \startcombination[twopages][2*1] + {\typesetfile[#1.tex][page=2,width=\measure{twopages}]} {2} + {\typesetfile[#1.tex][page=3,width=\measure{twopages}]} {3} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded FourPages #1 + \startlinecorrection[blank] + \startcombination[fourpages][4*1] + {\typesetfile[#1.tex][page=1,width=\measure{fourpages}]} {1} + {\typesetfile[#1.tex][page=2,width=\measure{fourpages}]} {2} + {\typesetfile[#1.tex][page=3,width=\measure{fourpages}]} {3} + {\typesetfile[#1.tex][page=4,width=\measure{fourpages}]} {4} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded FourSpread #1 + \startlinecorrection[blank] + \startcombination[fourpages][4*1] + {\typesetfile[#1.tex][page=2,width=\measure{fourpages}]} {2} + {\typesetfile[#1.tex][page=3,width=\measure{fourpages}]} {3} + {\typesetfile[#1.tex][page=4,width=\measure{fourpages}]} {4} + {\typesetfile[#1.tex][page=5,width=\measure{fourpages}]} {5} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded SixPages #1 + \startlinecorrection[blank] + \startcombination[sixpages][6*1] + {\typesetfile[#1.tex][page=1,width=\measure{sixpages}]} {1} + {\typesetfile[#1.tex][page=2,width=\measure{sixpages}]} {2} + {\typesetfile[#1.tex][page=3,width=\measure{sixpages}]} {3} + {\typesetfile[#1.tex][page=4,width=\measure{sixpages}]} {4} + {\typesetfile[#1.tex][page=5,width=\measure{sixpages}]} {5} + {\typesetfile[#1.tex][page=6,width=\measure{sixpages}]} {6} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded SixSpread #1 + \startlinecorrection[blank] + \startcombination[sixpages][6*1] + {\typesetfile[#1.tex][page=2,width=\measure{sixpages}]} {2} + {\typesetfile[#1.tex][page=3,width=\measure{sixpages}]} {3} + {\typesetfile[#1.tex][page=4,width=\measure{sixpages}]} {4} + {\typesetfile[#1.tex][page=5,width=\measure{sixpages}]} {5} + {\typesetfile[#1.tex][page=6,width=\measure{sixpages}]} {6} + {\typesetfile[#1.tex][page=7,width=\measure{sixpages}]} {7} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded EightPages #1 + \startlinecorrection[blank] + \startcombination[fourpages][4*2] + {\typesetfile[#1.tex][page=1,width=\measure{eightpages}]} {#1 / 1} + {\typesetfile[#1.tex][page=2,width=\measure{eightpages}]} {#1 / 2} + {\typesetfile[#1.tex][page=3,width=\measure{eightpages}]} {#1 / 3} + {\typesetfile[#1.tex][page=4,width=\measure{eightpages}]} {#1 / 4} + {\typesetfile[#1.tex][page=5,width=\measure{eightpages}]} {#1 / 5} + {\typesetfile[#1.tex][page=6,width=\measure{eightpages}]} {#1 / 6} + {\typesetfile[#1.tex][page=7,width=\measure{eightpages}]} {#1 / 7} + {\typesetfile[#1.tex][page=8,width=\measure{eightpages}]} {#1 / 8} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\starttexdefinition unexpanded EightSpread #1 + \startlinecorrection[blank] + \startcombination[fourpages][4*2] + {\typesetfile[#1.tex][page=2,width=\measure{eightpages}]} {#1 / 2} + {\typesetfile[#1.tex][page=3,width=\measure{eightpages}]} {#1 / 3} + {\typesetfile[#1.tex][page=4,width=\measure{eightpages}]} {#1 / 4} + {\typesetfile[#1.tex][page=5,width=\measure{eightpages}]} {#1 / 5} + {\typesetfile[#1.tex][page=6,width=\measure{eightpages}]} {#1 / 6} + {\typesetfile[#1.tex][page=7,width=\measure{eightpages}]} {#1 / 7} + {\typesetfile[#1.tex][page=8,width=\measure{eightpages}]} {#1 / 8} + {\typesetfile[#1.tex][page=9,width=\measure{eightpages}]} {#1 / 9} + \stopcombination + \stoplinecorrection +\stoptexdefinition + +\setuphead + [chapter] + [style=\QuiteLarge, + color=color-3, + number=no] + +\setuplist + [chapter] + [command=\MyListCommand, + alternative=command] + +\starttexdefinition unexpanded MyListCommand #1#2#3 + \snaptogrid + [line,-line]\vbox { + \tfb + \setstrut + \strut#2 + \quad#3 + } +\stoptexdefinition + +\setupmargindata + [style=\tttf, + color=color-3] + +\starttexdefinition unexpanded ShowFile #1 + \margintext + {\cldcontext{string.match("#1","\letterpercent d+")}} + \typefile + [range={environment}] + {#1} +\stoptexdefinition + +% \typefile[range=4] {...} +% \typefile[range={=}]{...} % start after comment lines + +\starttexdefinition unexpanded ShowEnvironmentFile #1 + \margintext + {\cldcontext{string.match("#1","\letterpercent d+")}} + \typefile + [range={=startenvironment}] + {#1} +\stoptexdefinition + +\startdocument + +\startMPpage +StartPage ; + path p ; numeric w, h, d ; picture q ; + if true : + q := image(draw textext.urt("\ssbf COLUMNS") withcolor \MPcolor{color-6}) ; + else : + q := image(draw textext.urt("\ssbf COLUMNSETS") withcolor \MPcolor{color-6}) ; + fi ; + w := bbwidth(Page) ; + h := bbheight(Page) ; + d := h/100 ; + fill Page withcolor \MPcolor{color-1} ; + p := Page xysized (w,d) ; + for i := 5d step 2d until h-5d : + fill p shifted (0,i) withcolor \MPcolor{color-2} ; + endfor + p := Page xysized(w/10,h) ; + for i = 0, .3, .6, .9 : + fill p shifted (i*w,0) withcolor \MPcolor{color-1} withtransparency(1,.75) ; + endfor ; + def do_it(expr sz, sh) = + p := Page xysized sz ; + fill p shifted sh withcolor \MPcolor{color-3} withtransparency(1,.5) ; + draw q xysized (bbwidth(p),bbheight(p)) shifted sh ; + enddef ; + if true : + do_it ((2w/10,17d),(.1w,20d)) ; + do_it ((2w/10,15d),(.1w,56d)) ; + do_it ((2w/10,21d),(.4w,66d)) ; + do_it ((2w/10,13d),(.7w,38d)) ; + do_it ((5w/10,13d),(.4w,13d)) ; + draw textext.urt("\ssbf Hans Hagen") + xysized (5w/10,5d) + shifted (.4w,6d) + withcolor \MPcolor{color-5} ; + else : + do_it ((2w/10,17d),(.1w,15d)) ; + do_it ((2w/10,15d),(.1w,51d)) ; + do_it ((2w/10,21d),(.4w,61d)) ; + do_it ((2w/10,13d),(.7w,31d)) ; + do_it ((5w/10,13d),(.4w, 7d)) ; + fi ; +StopPage ; +\stopMPpage + +\page[empty] \setuppagenumber[number=1] + +\setupbackgrounds + [page] + [background=page] + +\starttitle[title=Contents] + + \placelist[chapter] + +\stoptitle + +\startchapter[title=Introduction] + +This manual introduces {\em column sets}, one of the output routines of \CONTEXT. +Although column sets are mainly meant for typesetting journals in a +semi||automated way, you can also use them for books. We assume that the user is +familiar with \CONTEXT\ and only discuss the commands that are related to column +sets. + +This mechanism performs okay but it needs to be used with care: an occasional +manual intervention is needed to get optimal results. After all, we're operating +in the area where normally click and point desktop publishing is used. + +{\bf For the moment you need to load the new code with: \type{\usemodule[newcolumnsets]}} + +\startlines +Hans Hagen +PRAGMA ADE +Hasselt, 2003\endash2016 +\stoplines + +\stopchapter + +\startchapter[title=Basics] + +As soon as enough content is collected to build a page, \TEX\ will invoke the +output routine. This is not a fixed piece of code, but a collection of macro +calls. The default output routine is a meant for typesetting a single column, as +in this document. A multi||column output routine is available as well. This +routine mixes well with the single column one, and is activated by: + +\starttyping +\startcolumns +some text ... +\stopcolumns +\stoptyping + +In \MKIV\ a new mixed column mechanism has been introduced that will be +developped further and eventually replace the old multi column handler. In \MKII\ +there is also a columnset mechanism that can be used to construct complex multi +column pages. In \MKIV\ this gets replaced by grid columns. All these multi +column mechanisms have in common that the output routine is more complex because +now a page is in fact a collection of pages wrapped onto one. Each column is +(from \TEX's perspective) similar to a one narrow column page. Here we focus on +columnsets (page grids). + +There are some limitations to what you can do with this kind of multi columns, +which is why we have a third routine at out disposal: {\em column sets}. This +routine can be used for rather complex layouts with graphics all over the place, +and text spanning columns or even spreads. There are of course some shortcomings, +which we will discuss later. + +In the examples that follow we use the following style to set up the layout. The +number in the margin serves a reference to the file where this snippet of \TEX\ +is stored. + +\ShowEnvironmentFile{columnsets-000} + +\page[mine] + +Before we will demonstrate more complex layouts, we will introduce a few +features. In the next series of examples we use fake text. You can enlarge the +pages in your viewer if you want to see more detail. + +\FourSpread{columnsets-001} + +These pages were typeset with the following code: + +\ShowFile{columnsets-001} + +We will showmost examples on a spread, so we don't show a first page. On a +spread like above we number columns from~1 to~4, which in practice means that in +this case columns starting on right page start with column~3! + +\SixPages{columnsets-001} + +\page[mine] + +The number of columns is not fixed to two. You can even have a different number +of columns on left and right pages. + +\FourSpread{columnsets-002} + +This time the input is: + +\ShowFile{columnsets-002} + +Again, we started on a right page but showed the spreads. You can see it from the +positioning of the header texts. + +\SixPages{columnsets-002} + +\page[mine] + +In order to get the balancing you want, you can manually influence the height of +a column. + +\FourSpread{columnsets-003} + +When you set the number of column lines to a positive value, that will be the +number of lines. A negative value will be subtracted from the maximum number of +lines. + +\ShowFile{columnsets-003} + +\page[mine] + +In articles you may want to let the introduction span multiple columns. A column +span is defined independent of a column set and shows up as follows: + +\FourSpread{columnsets-004} + +Here we've given the span a background so that it stands out. + +\ShowFile{columnsets-004} + +\page[mine] + +A column span can be positioned like any graphic. Later we will discuss the +placement options in more detail, for the moment all you need to know is that +\type {btlr} tells \CONTEXT\ to place the graphic in the left bottom of the the +text area. + +\FourSpread{columnsets-005} + +Here we pass the \type {default} placement as parameter to the span, but you can +also set it at definition time. We use a brute force simple column splitter to +fake columns inside the span. + +\ShowFile{columnsets-005} + +\page[mine] + +You are not limited to one column span. In this sense a span is like a graphic: +as long as there is room, it will be placed where you want it to be placed. The +main difference between a span and a graphic is that a span expects text and +tries to align the baselines with the rest of the text. In many ways a column +span behaves like a framed text. + +\FourSpread{columnsets-006} + +This time we flushed one of the spans from bottom to top, starting at the right +edge: \type {btrl}. + +\ShowFile{columnsets-006} + +\page[mine] + +Column spans are treated like graphics, which means that they will float if +needed. In the process, the width is limited to the available space, which in +some cases may lead to a smaller span than you may expect. Think of a column +span, calculated (and prepared) in the last column and ending up on the next page +in the first column, where a broader span would have been possible. + +\FourSpread{columnsets-007} + +\ShowFile{columnsets-007} + +\stopchapter + +\startchapter[title=Graphics] + +Most documents have graphics, and therefore column sets can contain them. The +main thing that you have to keep in mind when placing graphics, is that column +sets are based on grids. Therefore spacing around graphics is also grid based. + +\FourSpread{columnsets-101} + +\ShowFile{columnsets-101} + +\page[mine] + +You can tell \CONTEXT\ where it should place the graphic, but this will only be +honored when there is still place. + +\EightSpread{columnsets-102} + +The prefered location is passed as a four character directive: + +\ShowFile{columnsets-102} + +\page[mine] + +The following directives are available: + +\starttabulate[|lT|p|] +\NC btlr \NC flush from bottom to top and left to right \NC \NR +\NC btrl \NC flush from bottom to top and right to left \NC \NR +\NC tblr \NC flush from top to bottom and left to right \NC \NR +\NC tbrl \NC flush from top to bottom and right to left \NC \NR +\NC lrbt \NC flush from left to right and bottom to top \NC \NR +\NC lrtb \NC flush from left to right and top to bottom \NC \NR +\NC rlbt \NC flush from right to left and bottom to top \NC \NR +\NC rltb \NC flush from right to left and top to bottom \NC \NR +\NC here \NC try to place the graphic here \NC \NR +\NC fixd \NC force the graphic here and don't float \NC \NR +\NC fxtb:c*r \NC place the graphic at (c,r) or lower if needed \NC \NR +\NC fxbt:c*r \NC place the graphic at (c,r) or higher if needed \NC \NR +\NC tops \NC place the graphic at the top of the page \NC \NR +\NC bots \NC place the graphic at the bottom of the page \NC \NR +\NC page \NC place the graphic at a separate page \NC \NR +\stoptabulate + +In the next example we show the directional locations: + +\OneSpread{columnsets-103} + +\ShowFile{columnsets-103} + +\stopchapter + +\startchapter[title=Areas] + +So far we have seen texts and graphics that span multiple columns using span +commands and floats placement commands. We have also seen that you can define a +different number of columns for left and right pages. Now that we have arrives at +column areas you will see how we can span information over not only a page but +also over pages in a spread. + +\FourSpread{columnsets-201} + +Being a framed text, by default an area is aligned at the baseline. You can lower +an area by setting the \type {location} to \type {depth}. + +\ShowFile{columnsets-201} + +\page[mine] + +You can position areas on the left, right or next page or on both pages. When you +set \type {state} to \type {repeat}, an area is repeated, otherwise it is only +placed once. + +\FourSpread{columnsets-202} + +Here we just repeat the areas. Normally this only make sense when the content is +worth repeating. + +\ShowFile{columnsets-202} + +\page[mine] + +Areas can span a spread, as is demonstrated in the next example. + +\FourSpread{columnsets-203} + +\ShowFile{columnsets-203} + +\page[mine] + +An application of a spread area is a title. In the next example we show two +spread pages. + +\FourSpread{columnsets-204} + +Watch how we explicitly go to a left page. + +\ShowFile{columnsets-204} + +\page[mine] + +The \type {\GapText} macro is an experimental fun macro and is used to make sure +that we don't end up with a clipped character. + +\startlinecorrection[blank] +\startcombination + {\scale[width=.4\textwidth]{\clip + [nx=2,ny=6,x=2,y=2] + {\typesetfile[columnsets-204.tex][page=2]}}} + {left page} + {\scale[width=.4\textwidth]{\clip + [nx=2,ny=6,x=1,y=2] + {\typesetfile[columnsets-204.tex][page=3]}}} + {right page} +\stopcombination +\stoplinecorrection + +This is a typical example of the kind of optimizations that are needed when you +make documents of styles with text that spans a spread. In the next clip we +visualize the gap. + +\startlinecorrection[blank] +\startcombination + {\scale[width=.4\textwidth]{\clip + [nx=2,ny=6,x=2,y=2] + {\typesetfile[columnsets-205.tex][page=2]}}} + {left page} + {\scale[width=.4\textwidth]{\clip + [nx=2,ny=6,x=1,y=2] + {\typesetfile[columnsets-205.tex][page=3]}}} + {right page} +\stopcombination +\stoplinecorrection + +At some moment you may want to set up an area in advance as we have done in the +following example. + +\FourSpread{columnsets-206} + +The \type {page} key is used to specify the page in the column set that the area +should go into. Column set pages start numbering at~1. The \type {fixed} stands +for left or right, whatever comes first. + +\ShowFile{columnsets-206} + +\stopchapter + +\startchapter[title=Columns] + +You can use \type {\page} to go to a new page in a column set. Likewise you can +use \type {\column} to force a column break. + +\FourPages{columnsets-301} + +This example demonstrates that you can supply \type {\column} with explicit +directives. + +\ShowFile{columnsets-301} + +You can use \type {\column[page]} as an alternative for \type {\page}. + +\stopchapter + +\startchapter[title=Details] + +This chapter will cover a couple of cosmetic details of column sets. {\em Some +features need to be improved, especially in combination with areas, graphics and +alike. We will also provide side floats etc.} + +\FourSpread{columnsets-401} + +You can set the distance between columns for each pair of columns. {\em Todo: +left and right page distances and margins.} + +\ShowFile{columnsets-401} + +\page[mine] + +When you can the distance of the first column as well. This creates a margin. + +\FourSpread{columnsets-402} + +This time we used equal distances: + +\ShowFile{columnsets-402} + +\page[mine] + +The width of columns is normally calculated automatically, but you can also set +the width explicitly: + +\FourSpread{columnsets-403} + +In code: + +\ShowFile{columnsets-403} + +\page[mine] + +For special effects, you can set the width per column. In that case you need to +be aware of the fact that \TEX\ works its way through the document per paragraph. +Changing the width halfway a paragraph is possible but will affect the whole +paragraph. Therefore, this feature works best when you also goto the next column +explicitly. + +\FourSpread{columnsets-404} + +In code: + +\ShowFile{columnsets-404} + +\page[mine] + +If you really want to change the width in the middle of a paragraph, you can do a +trial run and include a breakpoint at the palce where you want it to occur: + +\FourSpread{columnsets-405} + +In the second spread you see how the narrow hsize carries on in the wider +column. A \type {\column} command will synchronize the hsize. + +\ShowFile{columnsets-405} + +% \page[mine] + +\stopchapter + +\startchapter[title=Directions] + +\FourSpread{columnsets-601} + +The direction of flushing columns is determined by the \type {direction} +parameters as demonstrated below. + +\ShowFile{columnsets-601} + +% \page[mine] + +\stopchapter + +\startchapter[title=Backgrounds] + +As with many \CONTEXT\ components, column sets can have backgrounds. + +\FourSpread{columnsets-701} + +Watch how we use the \type {each} keyword to tell \CONTEXT\ that we want to apply +the background to each column of the set. + +\ShowFile{columnsets-701} + +\page[mine] + +Normally, if you apply backgrounds this way, you will also set the background +offset. In a similar fashion you can apply backgrounds to areas and spans. Such +backgrounds can be a color, or any overlay or layer you want. + +\FourSpread{columnsets-702} + +Here we've set the background offset as well as the frame. + +\ShowFile{columnsets-702} + +\page[mine] + +When dealing with areas, you need to be aware of the fact that they are clipped, +the content as well as the background. + +\FourSpread{columnsets-703} + +De default clip offset is two times the lineheight, except in the binding, where +it is set to zero points. You can set the clip offset with the \type {clipoffset} +parameter. + +\ShowFile{columnsets-703} + +\page[mine] + +The text background mechanism is rather well adapted to column sets. The +following example is a variant on an example shown in the manual titled +{details}. + +\EightSpread{columnsets-704} + +Watch how we adapt the background to the fact and extent that the text spans one +or more columns. + +\ShowFile{columnsets-704} + +Backgrounds that follow the paragraph shape also work ok in column sets. + +{\em todo: an example of a bleeding graphic with column feed back (from +techniek)} + +% \page[mine] + +\stopchapter + +\startchapter[title=Numbering lines] + +\FourSpread{columnsets-901} + +This example shows how numbering lines in columns works out. In a two column +layout the numbers end up in the outer margins by default. If you want you can +set the \type {location} to for instance \type {left} or \type {right}. + +\ShowFile{columnsets-901} + +\page[mine] + +\FourSpread{columnsets-902} + +In a three column setup the numbers end up in the left margins.Make sure you make +the distance large enough. + +\ShowFile{columnsets-902} + +% \page[mine] +% +% \FourSpread{columnsets-903} +% +% This example shows again lune numbers but here we made sure that there is no +% stretch in the whitespace. +% +% \ShowFile{columnsets-903} + +\stopchapter + +% \startchapter[title=Spanning and More] +% +% {\em todo: explanation} \page +% +% \TwoPages{columnsets-801} \ShowFile{columnsets-801} \page[mine] +% \TwoPages{columnsets-802} \ShowFile{columnsets-802} \page[mine] +% \TwoPages{columnsets-803} \ShowFile{columnsets-803} \page[mine] +% \TwoPages{columnsets-804} \ShowFile{columnsets-804} \page[mine] +% \TwoPages{columnsets-805} \ShowFile{columnsets-805} \page[mine] +% \TwoPages{columnsets-806} \ShowFile{columnsets-806} \page[mine] +% +% \stopchapter + +\stopdocument |