Apply display color profile to all images

Review Request #123928 - Created May 28, 2015 and submitted

Information
Jan Kundrát
gwenview
master
322149
bdcb4b6...
Reviewers
gwenview
aacid, gateau, lukas
...including those which do not have any embedded profile. Just treat
them as sRGB, which is probably a reasonable choice. This makes a huge
difference on wide-gamut displays.

LittleCMS doesn't support RGBA_Premultiplied because premultipled alpha
doesn't "make a lot of sense with a color management system since color
perception varies with intensity and the colorspace may not be linear
across the color channels" (see [1] for why, and for an experimental
patch which apparently didn't move anywhere and wasn't merged).

[1] http://sourceforge.net/p/lcms/mailman/message/30246542/

REVIEW: 123928
BUG: 322149

On my DELL U3014, this makes gwenview usable once again. You do not want to see the pink tones here without this patch.

Jan Kundrát
Jan Kundrát
Jan Kundrát
Lukáš Tinkl
Jan Kundrát
Review request changed

Status: Closed (submitted)

Change Summary:

Submitted with commit 1425825120ad19fc085fe62ca025023d46038aef by Jan Kundrát to branch master.
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