Peter Rolf wrote:
>>> overprinting is broken here. I used \dostartoverprint in the >>> past, but this no longer works. What is the recommended way for >>> overprinted text nowadays?
(in mkiv) i redid overprints - it's now no longer a property but just a color feature - the name chanegd to 'intent' - we now have \setupcolors[intent=none|overprint|knockout]; once set to != none it stays that way (global) - \startcolorintent[overprint|knockout] .. \stopcolorintent - the \startoverprint command is still there for backward compatibility in mkii i didn't change the mechanism, just the 'intent' key as this is s specialized feature i don't care too much about compatibility ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Hans Hagen schrieb:
Peter Rolf wrote:
>>>> overprinting is broken here. I used \dostartoverprint in the >>>> past, but this no longer works. What is the recommended way >>>> for overprinted text nowadays?
(in mkiv) i redid overprints
many thanks!
- it's now no longer a property but just a color feature
makes sense
- the name chanegd to 'intent'
- we now have \setupcolors[intent=none|overprint|knockout]; once set to != none it stays that way (global)
- \startcolorintent[overprint|knockout] .. \stopcolorintent
- the \startoverprint command is still there for backward compatibility
in mkii i didn't change the mechanism, just the 'intent' key
as this is s specialized feature i don't care too much about compatibility
first tests show that there are still scope problems in mkiv (e.g. a complete button is set to overprint instead of the text only). no clue yet, but i'm working on it...
----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________
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Peter Rolf wrote:
first tests show that there are still scope problems in mkiv (e.g. a complete button is set to overprint instead of the text only). no clue yet, but i'm working on it...
sure, as overprint is not aware of any content so you need to use knockout then Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Hans Hagen schrieb:
Peter Rolf wrote:
first tests show that there are still scope problems in mkiv (e.g. a complete button is set to overprint instead of the text only). no clue yet, but i'm working on it...
sure, as overprint is not aware of any content so you need to use knockout then
mh, isn't \stopoverprint enabling knockout automatically? or do i need a \ExtGState entry with knockout at the document level? just started reading in the pdf reference manual...
Hans
----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
Peter Rolf wrote:
Hans Hagen schrieb:
Peter Rolf wrote:
first tests show that there are still scope problems in mkiv (e.g. a complete button is set to overprint instead of the text only). no clue yet, but i'm working on it...
sure, as overprint is not aware of any content so you need to use knockout then
mh, isn't \stopoverprint enabling knockout automatically? or do i need a \ExtGState entry with knockout at the document level? just started reading in the pdf reference manual...
it depends ... we have none: no entry at all, knockout: some nil entry, overprint: special entry the thing is that when we have globally overprint on, we need s local knockout : \startoverprint ... \bgroup ... \startknockout ... \stopknockout ... \egroup ... \stopoverprint is nicer than \startoverprint ... \bgroup ... \stopoverprint ... \startoverprint ... \egroup ... \stopoverprint Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Hi Hans, hi all, I use overprinting only for the texts (not global). Most times the texts are stored in a \[h|v]box first, before they are added to the rest (offsets, background, whatever). So thinks look like this (very simplified): \setbox\Textbox\hbox{\startoverprint Some text.\stopoverprint} Overprinting should be activated only inside of this box. Sadly mkiv adds this attribute to most of the graphics with text. The first graphics is always OK, but the following graphics are overprinted as a whole. I have compared the pdf of pdftex and luatex and the main difference is, that luatex 'optimizes' the overprinted texts by *grouping* them. Instead of two or more independent areas (one /GSoverprint ... /GSknockout for every text), like in mkii, % pdftex %---------------------------- /GSoverprint gs % text 1 BT /Fm?? first overprinted text ... /GSknockout gs /GSoverprint gs % text 2 BT /Fm?? second overprinted text ... /GSknockout gs %---------------------------- I get % luatex %---------------------------- /GSoverprint gs % text 1 and 2 BT /Fm?? first overprinted text ... /Fm?? second overprinted text ... /GSknockout gs %---------------------------- This is right from the point of overprinting, but the texts are still part of different graphics (rendering is done at different times). I guess this somehow corrupts the grouping. The first graphic in such a group is always OK, all following graphics are overprinted as a whole. I have tested this with more than two graphics (resulting in two multiple groups) and I get the same effect. No minimal yet. Any thoughts? Best wishes, Peter Hans Hagen schrieb:
Peter Rolf wrote:
Hans Hagen schrieb:
Peter Rolf wrote:
first tests show that there are still scope problems in mkiv (e.g. a complete button is set to overprint instead of the text only). no clue yet, but i'm working on it...
sure, as overprint is not aware of any content so you need to use knockout then
mh, isn't \stopoverprint enabling knockout automatically? or do i need a \ExtGState entry with knockout at the document level? just started reading in the pdf reference manual...
it depends ... we have none: no entry at all, knockout: some nil entry, overprint: special entry
the thing is that when we have globally overprint on, we need s local knockout :
\startoverprint ... \bgroup ... \startknockout ... \stopknockout ... \egroup ... \stopoverprint
is nicer than
\startoverprint ... \bgroup ... \stopoverprint ... \startoverprint ... \egroup ... \stopoverprint
Hans
----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
participants (2)
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Hans Hagen -
Peter Rolf