Re: new upload

[Hans Hagen <j.hagen@xs4all.nl>]

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On 7/10/2023 10:43 AM, denis.maier@unibe.ch wrote:

> Page puilder mode sounds interesting! What are you plans for that?

Things like:

- overflow area
- vertical expansion
- more detailed tracing
- more accurate \testpage
- initial and as-we-go stretch/shrink manipulation

Most is already there but in the process of being documented and tested.

Atached is an example (from the manual) that shows somethign that can be 
handy for those who typeset novels and such. (vz is a variant on hz and 
is something that Hermann Zapf suggested long ago when we discussed 
vertical expansion.)

Other tricks are:

\setupalign[vertical,height]

....

\setpagelooseness[-2]

....

and such which can be used to influence the current page.

Hans

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\starttext

\startbuffer[vz-1]
\starttext
    \showframe[text]
    \enabletrackers[layout.vz]
    \setuplayout[width=middle,headerdistance=5mm,vz=no]
    \clubpenalty  10000
    \widowpenalty 10000
    \dostepwiserecurse{0}{30}{1}{
        \dorecurse{#1}{\strut dummy line ##1\par}
        \dorecurse{4}{\samplefile{tufte}\par}
    }
\stoptext
\stopbuffer

\startbuffer[vz-2]
\starttext
    \showframe[text]
    \enabletrackers[layout.vz]
    \setuplayout[width=middle,headerdistance=5mm,vz=yes]
    \clubpenalty  10000
    \widowpenalty 10000
    \dostepwiserecurse{0}{30}{1}{
        \dorecurse{#1}{\strut dummy line ##1\par}
        \dorecurse{4}{\samplefile{tufte}\par}
    }
\stoptext
\stopbuffer

\startbuffer[vz-3]
\starttext
    \showframe[text]
    \enabletrackers[layout.vz]
    \setuplayout[width=middle,headerdistance=5mm,vz=2]
    \clubpenalty  10000
    \widowpenalty 10000
    \dostepwiserecurse{0}{30}{1}{
        \dorecurse{#1}{\strut dummy line ##1\par}
        \dorecurse{4}{\samplefile{tufte}\par}
    }
\stoptext
\stopbuffer

\startplacefigure[location=here,reference=fig:vz-1,title={Cheating with vertical expansion: \type {[vz=no]}.}]
    \startcombination[4*1]
        {\typesetbuffer[vz-1][width=\combinationwidth,page=1,frame=on]} {}
        {\typesetbuffer[vz-1][width=\combinationwidth,page=2,frame=on]} {}
        {\typesetbuffer[vz-1][width=\combinationwidth,page=3,frame=on]} {}
        {\typesetbuffer[vz-1][width=\combinationwidth,page=4,frame=on]} {}
    \stopcombination
\stopplacefigure

\startplacefigure[location=here,reference=fig:vz-2,title={Cheating with vertical expansion: \type {[vz=yes]}.}]
    \startcombination[4*1]
        {\typesetbuffer[vz-2][width=\combinationwidth,page=1,frame=on]} {}
        {\typesetbuffer[vz-2][width=\combinationwidth,page=2,frame=on]} {}
        {\typesetbuffer[vz-2][width=\combinationwidth,page=3,frame=on]} {}
        {\typesetbuffer[vz-2][width=\combinationwidth,page=4,frame=on]} {}
    \stopcombination
\stopplacefigure

\startplacefigure[location=here,reference=fig:vz-3,title={Cheating with vertical expansion: \type {[vz=2]}.}]
    \startcombination[4*1]
        {\typesetbuffer[vz-3][width=\combinationwidth,page=1,frame=on]} {}
        {\typesetbuffer[vz-3][width=\combinationwidth,page=2,frame=on]} {}
        {\typesetbuffer[vz-3][width=\combinationwidth,page=3,frame=on]} {}
        {\typesetbuffer[vz-3][width=\combinationwidth,page=4,frame=on]} {}
    \stopcombination
\stopplacefigure

\stoptext

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