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https://bugs.launchpad.net/bugs/1498767
Title:
Mir doesn't support drag and drop (DND) windows
Status in Mir:
New
Status in mir package in Ubuntu:
New
Bug description:
Mir doesn't support drag and drop (DND) windows.
In playing with X apps under Xmir, one of the more broken features is
drag and drop (_NET_WM_WINDOW_TYPE_DND). Mir doesn't understand it
yet, so at best you get a new window appear for the thing getting
dragged, but it doesn't move.
Test cases:
In Xmir run nautilus and drag an icon from it.
In Xmir run chromium-browser and drag a browser tab from it.
Although X historically implements these things with absolute placement
(which Mir doesn't support), we could implement DND movement in Mir shells
using some simple heuristic:
relative_grab_pos = cursor pos in the original app window when the DND
window was created
Now Mir always places the DND window at the cursor pos minus
relative_grab_pos.
Thus the surface being dragged always retains the same position under the
cursor as when it was grabbed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/mir/+bug/1498767/+subscriptions
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