Re: [Gimp-developer] Blend Tool UI

On 25 June 2014 01:59, Michael Henning <drawoc darkrefraction com> wrote:
Joao: You might have misunderstood me. I'm referring to the blend
tool, not the gradient editor.

Yes . I indeed was thinking about the gradient editor - just later I
realized it was the
actual application of the gradient on Canvas.

My comment about the "shapped" ones however is valid - I think they
should stay, even if terhe
is no possible action for the time being. The shaped blends do require
control as well, and it would be nice
if we could be work ont hat for the future. If you look there, there
is an open bug
about the "offset" parameter not being used in the shapped fills (and
the ending point is actually ignored).
Maybe, adding some control there, the 3 "shaped..." fills could be
made into a single one.


scl: Just the ones whose name starts with 'Shaped'.

Ofnuts: Yes, Filters>Render is probably a better place than the bucket
tool, if we do move the shapebursts.

Alexandre: I'm hoping to also hook up the live preview to update along
with any modifications of the gradient that happen in the gradient
editor. It isn't quite the same as on-canvas editing of color stops,
but if you're doing that sort of work, it should become it a lot

On Tue, Jun 24, 2014 at 7:49 AM, peter sikking <peter mmiworks net> wrote:
Michael Henning wrote:
* I'd like to make the blend tool generally more interactive. By
this, I mean that after the user has created a gradient, they will be
presented with handles that they can use to modify the endpoints of
the gradient before committing their changes.

good plan. combine it with updating the colours of the
endpoints to make it truly adjustable to get it _right_

hint: please do not make the endpoint handles small;
think generous (more tens of pixels than single digits) and
also show where the exact endpoint is in the centre of the handle
(say, with a cross to aim).

I had been imagining selection handles that are simply filled circles.
In my early prototype, they look like this:

I think they are big enough, but they don't really show the exact
location of the endpoint. I guess I'll need to experiment with this

I have a feeling that If I make them circle outlines with crosshairs
in them, they'll look cluttered. Having just crosshairs won't make it
obvious that you can drag the points. Maybe drawing circles most of
the time, and then hiding the circles and switching to crosshairs
while dragging the points, would be good? (The idea is to show the
precise handles when they're needed during dragging, and then switch
to handles that invite grabbing for the remainder of the time.)

* I'd also like to add a live preview to the blend tool so users can
preview the gradient and experiment with different options, before
committing their changes.

yes, vital for making the previous point work.

please make commit an implicit thing (moving on to another
tool, starting another gradient) combined with explicit
(e.g. <return>) as a backup. see handling of committing
selections in the rectangular selection tool.

Agreed. I wasn't planning to make starting another gradient commit the
first, but now that I think about it, that does make more sense.

* I'm also planning to add undo support within the tool.

I hope you mean: step-by-step undo while not committed,
after a commit undo the whole committed gradient.

Yes, that's exactly the plan.

again: vital, to make other points above _really_ work.
both for the interactive part and as a form of non-committing

* The general consensus within the dev team seems to be that the
shapebursts (all of the gradient types currently marked "shaped")
should be moved out of the blend tool. They would likely be moved into
either a menu item, or (maybe?) within the fill tool.

as far as my thoughts go: there will be more working
with (vector) shapes in the future, and modifying those
shapes with a gradient fill (by the gradient tool)
could be the way to handle that.

Hmm, you might have misunderstood what I meant by shapebursts. The
shapebursts are special gradients that mimic the shape of your
selection (currently labeled "Shaped (angular)", "Shaped (spherical)",
and "Shaped (dimpled)"). Anyway, at this point I'm really conflicted
as to what should be done with them. I'm not sure whether they belong
in the blend tool or not right now.

Anyway, thanks for the input.

  -- drawoc
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