Re: [Gimp-developer] Image history access from python

["Joao S. O. Bueno" <gwidion mpc com br>]

Hi Pacco-

yes, subverting Path creation for getting user coordinates is currently the only
way GIMP plug-ins have to get them. (You could however, clear the
paths on the plug-in call if in your workflow clearing them become a
burden)


It is interesting to note that even the C plug-ins that ship with GIMP can only
get image coordinates by re-creating an image preview inside their window
(that could be done from Python plug-ins as well). But this is done by
old-style plug-ins  - new style plug-ins, using GEGL, don have much
of an UI definition yet, besides automatically generated UIs from the
GEGL-operation parameters.

I had proposed a couple of times in the past (distant past by now) to have
a way to call-back plug-ins upon user
actions on the images. Such a discussion should pop back
anytime soon, since on-dialog image previews for plug-ins
are now a thing of the past.

I don't think your proposal as is should "fly" though - I can't see
how to define
an image "click" from within a plug-in like you do. A "click" using what
tool? What settings?

Maybe a "plug-in tool" that would give a plug-in (or Gegl-op ) access
to all stroke parameters, more or less as specified in the "ink markup
language" would be a
more solid approach for GIMP (http://www.w3.org/TR/InkML/) in the
foreseable future.

  js
 -><-

On 15 January 2014 07:42, Paco Garcia <jfgatol gmail com> wrote:
> hi, it would be very helpful to have access to the history of each image object
> from python, at least to the coordinates where the user has pressed, for
> example in two of my scripts to take coordinates from the user I force them
> to create paths of only use the coordinates of two nodes, if I had access
> to the user history clicks only have to access the last two clicks, for
> example:
> img = gimp.image_list () [0]
> h = img.History
> x1, y1 = h.mousePos [h.Length-1]
> x2, y2 = h.mousePos [h.Length]
> Or something like this
> Currently forced the user to create paths which then has to clear, the
> examples are:
> http://www.arakne.es/en/dessign/gimp-python-plugin-rotate-image-using-paths/
> http://www.arakne.es/en/dessign/gimp-script-stitch-layers/
> Paco García
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