Clamp item onto container edge, when placed out of bounds

[mtwango]

Replicating client behaviour, otherwise it will just bounce to random loc in container.

[cbnolok]

Could you use lesser than 0 instead of - 1? Might be more robust

[mtwango]

I used -1 because it is explicitly defined in CPointBase::InitPoint(). All other option fall to clamping to edges, but I can change that.

And maybe change that min/max for clamp?

[cbnolok]

Yes i thought so, but it's easy to do a fast change in other parts of the code and cause subtle bugs.
Std clamp is maybe more elegant but absolutely your choice!

[mtwango]

Updated both.