Scrolling map at edges works incorrectly

I can confirm this, except that scrolling is very slow to the direction on which edge the mouse pointer is. F.e. Mouse pointer close to left edge -> scrolling to left is very slow.

But i am not sure if this is a bug in Widelands or SDL or the WM and if this is worth for fixing since it is a special use case. I have never scrolled the map when the mouse pointer is near an edge. Just my opinion :-)

I can confirm as well - it's easier to reproduce with the "Grab input" option switched on.

BTW thanks for reporting all these bugs, this is really helpful!

Indeed, as kaputtnik indicated, near the edge scrolling speed to that direction lowers, proportionally to the distance from it. Also, x and y work independently, with the cursor in a corner I can only scroll two-way instead of four.
It's no show stopper, but as edges and corners easily catch the cursor it's rather visible and it feels a bit, well, broken.

About filing these bugs: no problem. That's the least I could do with a newer-than-new (that is to say, beta) build19! I'm not too sad to experience those new features and improvements first hand, and help polish them some more... Widelands is the game I always come back to, and I contributed a little bit of Lua a few years ago which was fun, but then I went AWOL. I've seen the announcement of the feature freeze, and the Call of Testing was upon me! Maybe some translation too, putting the new grammatical power to use and fixing outrageous messages like "the economy doesn't need the ware 'Brood'".

More improvement on those production program strings would be welcome for Build 20 :)

Just be aware that ware names can have grammar stuff happen on them in some languages when they are in a sentence, and providing alternative grammatical forms for sticking them in sentences is not trivial. Hence the quotes around the ware name ;)

This bug was not present in Build 18, so I targeted to Build 19. Not a show stopper though if we can't figure this out before the other bugs are fixed.

I have traced this all the way to void WLApplication::handle_input(InputCallback const* cb), called by int Panel::do_run(). The problem is that SDL won't fire any events for dragging the mouse off-screen. When the mouse pointer is a few pixels off the edge, it gets bounced back a few pixels. Not so when it's at the very edge.

So, it looks like a fix won't be trivial. Postponing this to Build 20.

Migrated to https://github.com/widelands/widelands/issues/1632