[Qgis-user] Irregular map frame with transparent mask?

[Alexandre Neto]

Hi Nyall,

Yes, I think it would be great fit for a crowdfunding effort.

Do you think that it would be possible to, at some point in time, use a
layer/feature geometry instead?

Thanks! I will be waiting for the next crowdfunding campaign to back it up.

Alex

Nyall Dawson <nyall.dawson at gmail.com> escreveu no dia quinta, 21/06/2018 às
23:32:

> On Wed, 20 Jun 2018 at 04:20, Alexandre Neto <senhor.neto at gmail.com>
> wrote:
> >
> > Hi,
> >
> > I am looking for a way to create a map with an irregular (non-rectangle)
> frame.
> >
> > There is blog post from Anita showing how to do it but it needs a white
> mask all around the map. While I need it to be transparent.
> >
> > I don't think this is possible yet without going the SVGs way, but maybe
> someone have so cool trick to share.
> >
>
> As others have commented - this isn't possible properly within QGIS
> yet. But I've been slowly chipping away at various underlying
> requirements to allow this to happen. Most of these bits are in place
> now, but we lack:
>
> 1. The ability to set a shape as a mask for another shape within
> layouts. This should be implemented using the existing
> "polygon"/shapes feature, e.g. by selecting an item and a shape and
> right clicking -> "set clipping mask"
>
> 2. Some code to push this masking shape down into the renderer -
> specifically to set the map boundary polygon for the labeling engine
> (so that the labeling engine knows if a label will be cut off/visible
> inside the clipping shape)
>
> 3. Handling for grids with clipping masks
>
> This might be a good candidate for inclusion in the next round of
> print layout crowd funding.... I'll add it to the list!
>
> Nyall
>
-- 
Alexandre Neto
---------------------
@AlexNetoGeo
http://sigsemgrilhetas.wordpress.com
http://gisunchained.wordpress.com
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