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I'm writing a script for GIMP and I'm stuck on this.

I want to deselect transparent pixels from user selection.

GIMP doesn't take RGBA values, so I can't just write:

(gimp-image-select-color inImage CHANNEL-OP-SUBTRACT inLayer '(0 0 0 0))

There is an error, because a color list can't have 4 elements.

How can I subtract alpha channel transparency from current selection? It is possible with GIMP UI (selected subtract switch in Select by Color Tool). I wanna achieve the same effect with script.

JasonSpine
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1 Answers1

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Intersect your selection with a selection made from the non-transparent pixels, in other words:

  • Save the selection mask
  • Alpha to selection
  • Invert selection
  • Intersect with saved selection mask

(or vice-versa)

xenoid
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