Hartmut Henkel wrote:
Hi Hans and Taco,
just a question: do you use PNG transparency purely by the PDF object machinery provided by pdftex, or do you add (via ConTeXt) other dictionaries for transparency definition as well? If the latter, what's normally in there?
context maintains its own transparency only for text and mp graphic, not for png etc; features like this can best be handles in the macro package anyway since there is not one solution (context does a lot of optimization, sharing etc there; pretty old code btw and unrelated to graphics; well, i do manipulate graphics (duo/multitone stuff) but not transparencies) keep in mind that colors in the viewer may look different starting at the page where the first transparency is encountered; has always been the case in viewers; has to do with some interaction betwene caching, anti aliasing, complex color spaces, etc so, if i use transparencies in a document, i always make sure that on the first page i have a fake one in order to trigger the machinery 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 -----------------------------------------------------------------