bulia byak wrote the following on 9/15/2010 2:40 PM:
On Wed, Sep 15, 2010 at 3:24 PM, John Culleton<john@...1202...> wrote:
So that is the problem situation. It must be LSI and if it is LSI it must be PDF X/1-a.
Let's work on the solution for Inkscape, shall we?
Like I said, it's rather unlikely that this will be a "solution for inkscape" only. We have purged our own PDF exporter in favor of cairo's. Since it would be better to avoid reinventing the wheel, maybe Scribus devels can help Cairo devs add this format to their PDF backend, or otherwise make their PDF code usable for cairo-using apps.
It may not be pretty or work directly in Inkscape but here's my external method using Imagemagick (should work on Linux, Windows and Mac)
# Convert RGB PNG (Exported from Inkscape) to CMYK (US SWOP) TIF convert /home/heathenx/Desktop/rgb.png -profile /usr/share/color/icc/sRGBColorSpaceProfile.icm -profile /usr/share/color/icc/USWebCoatedSWOP.icc /home/heathenx/Desktop/rgb-cmyk.tif
# Convert CMYK (US SWOP) TIF to CMYK PDF convert /home/heathenx/Desktop/rgb-cmyk.tif -profile /usr/share/color/icc/USWebCoatedSWOP.icc /home/heathenx/Desktop/rgb-cmyk.pdf
# Verify output identify -verbose /home/heathenx/Desktop/rgb-cmyk.pdf | grep Colorspace:
Of course I design in RGB and can use soft proofing to check colors. But let it be known that I never have a use for CMYK personally (at this point anyway). The Imagemagick commands are more of a proof that a conversion can be done...not that it is the most accurate way to go about it. This is a very generic conversion.
heathenx