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xwayland: Release xdnd grabs ASAP

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We currently wait for the selection being cleared by the drag source,
which might not happen on not quite educated clients. This may leave
a stuck XDND grab in the compositor side.

We can actually do a bit better, and clear the grab if:
1) The drag source sent XdndDrop to the wayland drag destination.
2) There's no accepting drag destination and all pointer buttons are
   released.
3) As usual, whenever the drag source clears the selection data

https://bugzilla.gnome.org/show_bug.cgi?id=763246
This commit is contained in:
Carlos Garnacho 2017-03-07 20:00:20 +01:00
parent 35388fb33c
commit 21b2eff334
1 changed files with 24 additions and 3 deletions
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27
src/wayland/meta-xwayland-selection.c
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@ -388,6 +388,20 @@ meta_xwayland_shutdown_dnd (MetaXWaylandManager *manager)
dnd->dnd_window = None;
}
static void
meta_xwayland_end_dnd_grab (MetaWaylandDataDevice *data_device)
{
Display *xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
MetaXWaylandManager *manager = &compositor->xwayland_manager;
MetaDndBridge *dnd = &manager->selection_data->dnd;
meta_wayland_data_device_end_drag (data_device);
XMoveResizeWindow (xdisplay, dnd->dnd_window, -1, -1, 1, 1);
XUnmapWindow (xdisplay, dnd->dnd_window);
}
/* X11/Wayland data bridges */
static MetaSelectionBridge *
@ -1400,8 +1414,16 @@ drag_xgrab_button (MetaWaylandPointerGrab *grab,
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
MetaWaylandSeat *seat = compositor->seat;
MetaWaylandDataSource *data_source;
meta_wayland_pointer_send_button (seat->pointer, event);
data_source = compositor->seat->data_device.dnd_data_source;
if (seat->pointer->button_count == 0 &&
(!meta_wayland_drag_grab_get_focus ((MetaWaylandDragGrab *) grab) ||
meta_wayland_data_source_get_current_action (data_source) ==
WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE))
meta_xwayland_end_dnd_grab (&seat->data_device);
}
static const MetaWaylandPointerGrabInterface drag_xgrab_interface = {
@ -1537,6 +1559,7 @@ meta_xwayland_selection_handle_client_message (MetaWaylandCompositor *compositor
else if (event->message_type == xdnd_atoms[ATOM_DND_DROP])
{
meta_wayland_surface_drag_dest_drop (drag_focus);
meta_xwayland_end_dnd_grab (&seat->data_device);
return TRUE;
}
}
@ -1596,7 +1619,6 @@ meta_xwayland_selection_handle_xfixes_selection_notify (MetaWaylandCompositor *c
else if (selection->selection_atom == xdnd_atoms[ATOM_DND_SELECTION])
{
MetaWaylandDataDevice *data_device = &compositor->seat->data_device;
MetaXWaylandSelection *selection_data = compositor->xwayland_manager.selection_data;
MetaWaylandSurface *focus;
selection->owner = event->owner;
@ -1617,8 +1639,7 @@ meta_xwayland_selection_handle_xfixes_selection_notify (MetaWaylandCompositor *c
}
else if (event->owner == None)
{
meta_wayland_data_device_end_drag (data_device);
XUnmapWindow (xdisplay, selection_data->dnd.dnd_window);
meta_xwayland_end_dnd_grab (data_device);
}
}