greyed-out / semi-transparent outside downloaded area

[rjmunro@…]

When editing an area of the map, I sometimes follow my GPS track or a map I've downloaded from NPE outside the area I have downloaded. It's very difficult to tell what the area actually downloaded is because ways are now automatically completed and stretch outside. Ideally, I'd like the data layer to have a grey background outside the downloaded area (maybe semi-transparent), and only let other layers show through in the area (or areas) that have been downloaded.

This may require extending the osm data format so that the downloaded areas can be restored after a file is loaded and saved, but if it only works when you download, and not when you load a data file, that would probably be good enough for most occasions.

[framm]

I have added functionality (build 247 available from Friday 25 May) to at least display yellow rectangles for the download areas. It doesn't yet save these, or forbid edits outside, or shade the non-downloaded area; these are still to be done. I will rename the ticket and downgrade it to minor to reflect the fact that I've at least done a little bit ;-)

[johan.huysmans@…]

This is already a nice feature and it will be very nice and handy when it is completely worked out.

But I have a remark for the yellow boxes.
If you download an area, scroll up and download the place above with overlapping. you will see 2 boxes. But now they are not marking the outside of what you have downloaded but the 2 download sessions.
The parts of the 2nd box appearing in the 1st box shouldn't be drawn.

[Harry Wood]

Oh I created #619 "amalgamated rectangles", but I see you've described exactly the same idea in that last comment. Oh well. We can track that separately

There's another idea here, which is to make areas outside the downloaded area greyed-out / semi-transparent, such that display of other layers is effected.

More awkward to implement I would guess.

[framm]

This has finally been fixed in r1078 and following improvements.