Certainly, and thanks. I came from
paint.net, which allows this. I think it’s actually a commonly supported scenario.
The use case is that I may want to paint with transparency on a blank spot in a layer. Later, I might want to update the places that were painted, e.g. to extend the transparent colored region, but now I have to use a workaround to get the right opacity. I raised this question only after running directly into this scenario.
- avoiding transparency on layers by always using transparency masks
- carefully guessing what the opacity value was
- Clone stamping and erasing, or duping to another layer, erasing & merging down
- exporting the layer to .png to read the alpha value
Despite possible workarounds, it seems I and others could benefit from direct support to copy opacity of a pixel. My proposal was to add a modifier key that, when held, makes the eyedropper also copy the opacity of the color beneath it.