render styles (optionally) for inactive layers

[dieterdreist]

Currently, only one data layer is rendered "visibly", the others are very faint and almost invisible, especially with a lot of data in the active layer which covers it.

It would be great to be able to have inactive data layers "visible" (maybe even above the current layer, i.e. respecting layer order in the layer menu), but with the features not selectable (it could be another setting whether you want the layer to be taken into account for snapping or not).

The usecase is when you are using data overlays in OSM format with select information, e.g. hiking paths or area boundaries, etc.

[felagund]

Map style applies to active layer

[felagund]

Bad visibility when the layer is inactive

[felagund]

Seems sort of like a duplicate of https://josm.openstreetmap.de/ticket/17497 - that would allow you to style inactive layers.

I would also love that.

I made a style to make text more readable. I want to use it on a GPX layer converted to a data layer:

node {
  text: name;
  font-family: "Arial";
  font-size: 12;
  font-weight: bold;
  text-color: #ffffff;
  text-halo-color: #000000;
  text-halo-radius: 2;
}

When this data layer is active, it is all displayed nicely:

But when I desactivate it (after all I use it just for display of notes, I do my edits on the downloaded Data layer and merging is discouraged for good reasons), it is very illegible: