On 07/31/2014 07:27 PM, Carsten Haitzler (The Rasterman) wrote:
The most obvious thing that does not work is drag & drop.
what has that got to do with a click raising or not? dnd is a separate protocol
element with its own semantics.
You want to be able to drag out of a window without raising it.
Otherwise it could raise and obscure the location you wish to drop at.
Probably more important right now is that this is how Windows and OS/X
work for drag & drop.
This is not possible if sending the mouse-down (the one that will start
the drag) raises the source window. It has nothing to do with the dnd
protocol itself as all this happens before the first dnd request or event.
Windows kludges around this by relying on synchronous operation, since
the window manager is (in effect) running in a library in the same
process. If no calls to start drag happen before the event handler for
the mouse-down returns, it raises the window. This cannot be done on
Wayland as it does not want to rely on synchronous behavior.
In any case this is going to have to be fixed in xdg_shell. I did not
realize until I did some more investigation of it how little has been
done on developing xdg_shell. I suppose clients that use wl_shell can
have unavoidable raise-on-click.
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