* Lost document background
@ 2010-05-24 8:48 Wolfgang Schuster
2010-05-24 8:51 ` Wolfgang Schuster
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Schuster @ 2010-05-24 8:48 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi Hans,
under certain circumstances document backgrounds (overlays) are lost.
A minimum real live example is this:
\definelayer[test]
\setuppagenumbering[alternative=doublesided]
\setupmakeup[standard][doublesided=empty] % background is lost
%\setupmakeup[standard][doublesided=yes] % background is visible
\startsetups[test]
\setlayer[test][hoffset=4cm,voffset=7cm]{\tfd text}
\stopsetups
\setupbackgrounds[page][background=test,setups=test]
\starttext
\startstandardmakeup
text
\stopstandardmakeup
test
\stoptext
With 'doublesided=yes' the background is visible but with
'doublesided=empty'
no background is shown.
I spend a few hours to find the reason for this and i was able to produce
a shorter example:
\defineoverlay[test][\tfd text]
\setupbackgrounds[page][background=test,state=repeat]
\starttext
text\page\page[blank]\null\page
%\chardef\pageornamentstate\zerocount
text
\stoptext
The problem is that '\page[blank]' sets \pageornamentstate at global
level to '1'.
Wolfgang
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* Re: Lost document background
2010-05-24 8:48 Lost document background Wolfgang Schuster
@ 2010-05-24 8:51 ` Wolfgang Schuster
2010-05-24 9:09 ` Hans Hagen
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Schuster @ 2010-05-24 8:51 UTC (permalink / raw)
To: mailing list for ConTeXt users
Am 24.05.10 10:48, schrieb Wolfgang Schuster:
> Hi Hans,
>
> under certain circumstances document backgrounds (overlays) are lost.
>
>
> A minimum real live example is this:
>
> \definelayer[test]
>
> \setuppagenumbering[alternative=doublesided]
>
> \setupmakeup[standard][doublesided=empty] % background is lost
> %\setupmakeup[standard][doublesided=yes] % background is visible
>
> \startsetups[test]
> \setlayer[test][hoffset=4cm,voffset=7cm]{\tfd text}
> \stopsetups
>
> \setupbackgrounds[page][background=test,setups=test]
>
> \starttext
>
> \startstandardmakeup
> text
> \stopstandardmakeup
>
> test
>
> \stoptext
>
> With 'doublesided=yes' the background is visible but with
> 'doublesided=empty'
> no background is shown.
>
>
> I spend a few hours to find the reason for this and i was able to produce
> a shorter example:
>
> \defineoverlay[test][\tfd text]
>
> \setupbackgrounds[page][background=test,state=repeat]
>
> \starttext
>
> text\page\page[blank]\null\page
>
> %\chardef\pageornamentstate\zerocount
>
> text
>
> \stoptext
>
> The problem is that '\page[blank]' sets \pageornamentstate at global
> level to '1'.
I found a fix in a older ConTeXt version:
\def\dopagebreak[#1]% so, page ornaments are reset after a pagebreak
command, unless set
{\bgroup
\flushnotes
\edef\prevrealpageno{\the\realpageno}%
\ifcase\pageornamentstate \or
% disable reset after shipout
\global\chardef\pageornamentstate\plustwo
\fi
\iffirstargument % or if empty i.e. []
\executepagebreakhandlers{#1}%
\else % so, no pagebreak when \pagebreak[] ! ! !
\executepagebreakhandler\v!yes
\fi
\ifnum\prevrealpageno<\realpageno
\global\chardef\pageornamentstate\zerocount
\fi
\egroup}
Wolfgang
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Lost document background
2010-05-24 8:51 ` Wolfgang Schuster
@ 2010-05-24 9:09 ` Hans Hagen
0 siblings, 0 replies; 3+ messages in thread
From: Hans Hagen @ 2010-05-24 9:09 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 24-5-2010 10:51, Wolfgang Schuster wrote:
> I found a fix in a older ConTeXt version:
>
> \def\dopagebreak[#1]% so, page ornaments are reset after a pagebreak
> command, unless set
> {\bgroup
> \flushnotes
> \edef\prevrealpageno{\the\realpageno}%
> \ifcase\pageornamentstate \or
> % disable reset after shipout
> \global\chardef\pageornamentstate\plustwo
> \fi
> \iffirstargument % or if empty i.e. []
> \executepagebreakhandlers{#1}%
> \else % so, no pagebreak when \pagebreak[] ! ! !
> \executepagebreakhandler\v!yes
> \fi
> \ifnum\prevrealpageno<\realpageno
> \global\chardef\pageornamentstate\zerocount
> \fi
> \egroup}
there must be a reason why i added the ifcase; for the moment i
commented it and we'll have to wait till we run into another border case
(much if this code needs a rewrite anyway)
i added your testcase as tests/mkiv/pages/ornaments-001.tex
Hans
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If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
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2010-05-24 8:48 Lost document background Wolfgang Schuster
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