CMS tab: Yellow and Cyan colors are swapped

[Karol Trojanowski]

Affected version: trunk as of July 21st 2011 (r10485). Last tested unaffected version: 0.48.1

CMYK ICC profiles installed in ubuntu package "icc-profiles". Reproducible with Adobe ICC profiles as well.

When I open the CMS tab and tweak the C and Y sliders, they behave as if they were swapped, i.e. the C slider controls the amount of Yellow and the Y slider controls the amount of Cyan.

This is shown in the attached images, where a comparison of how the same SVG looks like in trunk, 0.48.1 and Scribus 1.4.

[Karol Trojanowski (trojanowski-ifuj)]

I could only attach one file... The tested unaffected version is r9760.

[su_v (suv-lp)]

Difference to Inkscape 0.48.1 confirmed with
- r9598 (cairo-rendering branch) and
- Inkscape 0.48+devel r19485
(tested on Mac OS X 10.5.8 (i386))

Attached screenshot compares the CMS tab (Fill&Stroke) of the same SVG file (created with 0.48.1) with attached color profile (Iso Coated), opened in Inkscape 0.48.1 (left) and r10485 (right).

[kreaninw (kreaninw-ultimate)]

I'm using Inscape Trunk. This bug also effects me. Inkscape in Ubuntu Software Center doesn't have this bug.

[kreaninw (kreaninw-ultimate)]

I'm noticed that the color looks darker to the amount that I can't produce red color.

[Jon A. Cruz (jon-joncruz)]

main problem was that the lcms transform being used was incorrectly switched from RGB to BGR.

[Jon A. Cruz (jon-joncruz)]

Corrected in revision 11405

[su_v (suv-lp)]

Changing status to 'Fix Released' in accordance to [1] - the reported issue never occurred in a released version, only in current trunk. Please revert the bug status to 'Fix Committed' if you don't agree (or reopen a discussion about this aspect of bug management in the wiki/mailing list).

[1] <http://wiki.inkscape.org/wiki/index.php/Bug_management>