Re: [Gimp-developer] How to retrieve the monitor profile from inside a plug-in

[Carmelo DrRaw <aferrero1975 gmail com>]

Thanks, it worked!!!

The only part which is still missing is the tracking of monitor changes.

I have prepared a special GIMP AppImage with the patched gmic plug-in, if anyone is interested to test it and 
give some feedback: 
https://www.dropbox.com/s/xfo6okeqhx4kv5u/gimp-2.9.5-20160906.glibc2.15-x86_64.AppImage?dl=0

Regards,
Andrea

> On 06 Sep 2016, at 18:35, Michael Natterer <mitch gimp org> wrote:
>
> On Tue, 2016-09-06 at 16:47 +0200, Carmelo DrRaw wrote:
> > > On 06 Sep 2016, at 16:41, Michael Natterer <mitch gimp org> wrote:
> > >
> > > On Tue, 2016-09-06 at 16:30 +0200, Carmelo DrRaw wrote:
> > >
> > > In GIMP git master, you would say
> > >
> > > gimp_preview_area_set_color_config (gimp_preview_get_area
> > > (preview),
> > >                                     gimp_get_color_configuration
> > > ());
> >
> > Thanks! However, I assume that the ICC conversion is done in this
> > case using 8-bits precision, right?
> >
> > I would like to take advantage of the fact that G’MIC handles
> > floating-point precision, by doing the ICC conversion before the
> > conversion to 8-bits…
>
> Moreover, this API only makes sure an assumed-to-be-sRGB image
> is displayed correctly in 8 bit.
>
> You can omit this call, and feed color-corrected pixels to
> the preview directly, look at the GimpColorTransform API
> in libgimpcolor, which is a simple wrapper around lcms
> (which you don't need to use at all).
>
> For the image profile, use gimp_image_get_effective_color_profile(),
>
> for getting the transform, best use gimp_widget_get_color_transform()
> which will look up the right display profile by itself.
>
> Also, use gimp_widget_track_monitor() so you can recreate
> the transform when the window is moved to another monitor.
>
> For example code, grep for
>
> gimp_widget_get_color_transform
> gimp_widget_track_monitor
>
> in libgimpwidgets/ and app/widgets/
>
> Regards,
> --Mitch
>
> > > My question was if this is a plug-in against GIMP 2.8 (soon
> > > obsolete)
> > > or against GIMP git master.
> > >
> > > I wouldn't bother do add color management to a GIMP 2.8 plug-in
> > > and I have never tried.
> >
> > I see… G’MIC is already adapted to high bit depth and 2.9 API, so I
> > think it is worth adding proper color management.
> >
> > Regards,
> > Andrea
> >
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