I give you a simple example of use of removing transparency while creating a bitmap copy : you want visually isolate some area, move it slightly and give it a shadow like if it was detached on top of the page like a scree capture. At the moment you need several operations to do it, specially if you want an opaque background.

(But of course one could also imaginate a "Drag and release" style Clip or Mask which accelerates the process...!)

Imagine also that you want break your drawing in multiple pieces (with opaque background) and scatter them.

Lots of possibilities could be offered by removing transparency (and taking account of the apparent color of the background of course).

ivan

De : Jasper van de Gronde <th.v.d.gronde@...528...>
À : inkscape-devel@...575....sourceforge.net
Envoyé le : Mercredi 25 janvier 2012 9h40
Objet : Re: [Inkscape-devel] Re : Re : Merging Export and Create bitmap

On 24-01-12 19:53, Ivan Louette wrote:
> I persist to think that allowing to unify all kind of bitmap creation
> settings could be a great facility ! In Xara (the commercial version)
> exporting bitmaps and creating bitmap copies have exactly the same
> dialog box. I used it a lot in the past and that's fantastic for
> productivity for example when you must create lots of small bitmaps for
> brushes or scattering.

Completely agree, this part is totally fantastic.

> About background opacifying two filters do it : Flatten transparency and
> Fill Background (the latter even allows to fill background with an image).
>
> But what I would see in Inkscape is a true "quick area resterizing"
> which could work with or without transparency. But this kind of "area
> capture" could be done also as an instant bitmap conversion of a clipped
> or masked area (however at the moment this isn't possible with Mask
> because of the SVG1 alpha problem) The two in one Clip and rasterize
> would be a very productive feature !

I understand, but why does this need to remove transparency and/or add a
background that wasn't even there? What's the use case? In the end, if
you or others feel it's necessary to have this extra option, fine. I
just suspect that it might really be something else that's wanted,
that's why I'm asking about this.

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