Sent: 2009-07-02 23:44:54 UTC (over 2 years ago)

From: Rob Antonishen

Access Image in Plugin?

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Hi-

I'm trying to get (in order to modify) the active selection (channel)
in a C plugin I am writing.

I assume I can simply use gimp_image_get_mask (image) but I can't see
how to get the image object!

All the examples show accessing the drawable object using
gimp_drawable_get (param[2].data.d_drawable)

I know I can access the image ID using param[1].data.d_image, but the
only call seems to be gimp_image_get_by_ID which requires a first
parameter *gimp which I can't determine how to get! (Oddly enough, I
could image->gimp if I had the image object but that is a bit chicken
and egg situation...)

Can anyone provide a pointer, or tell me if there is a better way to
get the current selection (channel).

Thanks in advance...

-Rob A>

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Sent: 2009-07-03 20:41:40 UTC (over 2 years ago)

From: Sven Neumann

Access Image in Plugin?

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Hi,

On Thu, 2009-07-02 at 17:44 -0400, Rob Antonishen wrote:

> All the examples show accessing the drawable object using
> gimp_drawable_get (param[2].data.d_drawable)
>
> I know I can access the image ID using param[1].data.d_image, but the
> only call seems to be gimp_image_get_by_ID which requires a first
> parameter *gimp which I can't determine how to get! (Oddly enough, I
> could image->gimp if I had the image object but that is a bit chicken
> and egg situation...)

I think you are mixing GIMP core API and GIMP plug-in API here.
gimp_image_get_by_ID() is core API and not accessible to plug-ins. Same
holds true for the Gimp object.

What's the problem about using param[1].data.d_image ? The plug-in API
works with image IDs, there is no image struct or object in libgimp.

Sven

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