On 05/02/2015 02:44 PM, Øyvind Kolås wrote:
On Sat, May 2, 2015 at 9:45 AM, Elle Stone
<ellest...@ninedegreesbelow.com> wrote:
To be more blunt, the babl flips are Pippin's brain-child. If Pippin says
"no user choice", is there any real benefit to anyone if I write up a spec?
Wouldn't it just be a waste of everyone's time?

I have not stated *no*user*choice*, but I have stated that good ways
to let the user override these choices seem to be more along the lines
of what Gez is proposing, explicit conversions to and from other
working spaces / linearity / unpremultiplication. Let it be a separate
manual step to override sane defaults where sane defaults helps the
vast majority of uses by both operators of the software unaware of
these nuances as well as color management experts. This can be done as
separate actions without having additional, possibly confusing,
buttons in the UI.

I'm not entirely sure what you are proposing or how it could be implemented in the UI. Is this what you mean?

1. Make a list of all RGB editing operations that are provided by GIMP.

2. Decide for each operation whether it should be done using linear or perceptual RGB and set that as the default way the operation will be done.

3. Figure out which RGB operations "legitimately" should also be allowed to be done using the opposite choice from what the developers decided.

4. For the operations for which users can choose other than the default, do what? I can think of two possibilities:

i. Make an entirely new RGB editing operation. For example Curves-linear and Curves-perceptual, Gradient-linear and Gradient-perceptual, Soft-light-blend-linear and Soft-light-blend-perceptual, and so forth. Then stuff these new editing operations into the menu.

ii. Put an override button on the UI for the particular layer blend mode or tools/operation UI. But you said specifically said you don't want to put additional, possibly confusing buttons in the UI.

Is above close to what you are envisioning?

Does anyone on this list seriously find the idea of a button that says "Linear", that can be clicked to become "Perceptual" or vice versa, too confusing to use?

Sometimes babl/GEGL/GIMP developers say things that make me think that some of the devs think GIMP users as a whole are not very bright people.


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