Add a View -> Color Management submenu that allows to change
the color management mode per-display.
Internally, keep a GimpColorConfig object around per-display that
is synchronized with the global config except for the properties
that have a per-display GUI (currently the mode).
Also provide an "As in Preferences" menu item to follow the global
settings again.
but they aren't clipped
Add gimp_display_shell_profile_can_convert_to_u8() which returns
whether the lcms transform can safely write directly into an u8 buffer
without destroying out-of-gammut pixel values, which we assume is the
case for all integer formats. If the function returns FALSE, always
convert via the R'G'B'A float filter_buffer.
Also connect to the image's "precision-changed" signal and update the
profile transform when it's emitted.
Michael Natterer