Am 08.09.2011 11:31, schrieb Hans Hagen: > On 8-9-2011 11:19, Otso Helenius wrote: >> Hello, >> >> I recently made a SimpleSlides presentation with MKIV (2011.08.27 >> 13:24). It looks ok on numerous PDF readers including Okular, Google >> Docs, Sumatra PDF. Whenever I open it on Adobe Reader, the results are >> rather puzzling: >> >> 1) The fifth page background is not black but grey, also some later >> pages have grey background >> 2) The RGB and CMYK swatch colours are all messed up >> >> The picture on page four has been intentionally corrupted with a hex >> editor and then opened and saved again in Gimp to remove the errors in >> the file. >> >> You can view the source here: https://pi-xi.net/share/colorlecture.tex >> and the finished PDF here: https://pi-xi.net/share/colorlecture.pdf >> >> The only modifications I've made to the simpleslides-s-BottomSquares.tex >> is replacing the background color, contrast color and variant color with >> different values ([s=.0], [r=.8,g=.2,b=.2], [s=.15]). >> >> I would appreciate if someone could explain if there are bugs in my tex >> sources, in MKIV or in the Adobe Reader – and in any case how can I fix >> the erroneous output on Adobe Reader to match it on Sumatra, Google >> Docs, etc. > > Do you use transparencies? On pages where they are used, a different > color rendered seems to kick in (in acrobat). > You can try to add
\startluacode function backends.codeinjections.rgbtransparencygroup() local d = lpdf.dictionary { S = lpdf.constant("Transparency"), CS = lpdf.constant("DeviceRGB"), I = true } lpdf.registerpagefinalizer(function() lpdf.addtopageattributes("Group",d) end) end \stopluacode \def\pngTransparencyHack{\ctxlua{backends.codeinjections.rgbtransparencygroup()}} \pngTranparencyHack This is what I use here for my RGB based graphics. Anyhow, as the name of the macro says: it's not more than a (RGB only) hack. Regards, Peter ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________