[scribus-dev] lcms 2.8 and transparency flattening

[Andreͮaͦsͯ]

Hi,

AFAIK the main work of transparency flattening is determining which shapes using alpha transparency overlap, then replace them with intersections + nontransparent colors or with a bitmap.
Maybe lcms helps with calculating the resultant color, put that's only a small part of the problem.

/Andreas

> -----Original Message-----
> From: "Christoph Schäfer" [mailto:christoph-schaefer at gmx.de]
> Sent: Mittwoch, 8. Juni 2016 07:19
> To: Private Scribus Development List; Scribus Development Mailing List
> Subject: [scribus-dev] lcms 2.8 and transparency flattening
> 
> Hi all,
> 
> 
> According to https://sourceforge.net/p/lcms/mailman/lcms-
> user/thread/000001d1c02a%249a1ac4a0%24ce504de0%24%40littlecms.co
> m/#msg35140820 the next version of lcms will support Alpha channels. I
> wonder if this can help us resolve the lack of transparency flattening in
> Scribus.
> 
> One of the major obstacles of "selling" Scribus to users is that most printers
> who are asking for PDF/X-1a or PDF/X-3 files have no idea about the
> limitations of these standards. The reason is, of course, that InDesign flattens
> transparencies automatically, whereas Scribus doesn't have a mechanism like
> this.
> 
> 
> Christoph
> 
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