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wayland: Implement drag sources

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The wl_data_source is retrieved from the selection object for the DnD
selection, and used to initiate a drag. When the drag is finished, a
button release or touch end event is synthesized to finish the DnD
operation after the compositor grab is gone.

https://bugzilla.gnome.org/show_bug.cgi?id=697855
This commit is contained in:
Carlos Garnacho
2014-08-21 21:30:22 +02:00
parent 9b0b88d16b
commit 7b85a3417a
4 changed files with 203 additions and 6 deletions
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19
gdk/wayland/gdkdevice-wayland.c
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@ -523,7 +523,7 @@ data_device_enter (void *data,
struct wl_data_offer *offer)
{
GdkWaylandDeviceData *device = (GdkWaylandDeviceData *)data;
GdkWindow *dest_window;
GdkWindow *dest_window, *dnd_owner;
dest_window = wl_surface_get_user_data (surface);
@ -539,6 +539,12 @@ data_device_enter (void *data,
device->surface_y = wl_fixed_to_double (y);
gdk_wayland_drop_context_update_targets (device->drop_context);
dnd_owner = gdk_selection_owner_get (gdk_drag_get_selection (device->drop_context));
if (dnd_owner)
_gdk_wayland_drag_context_set_source_window (device->drop_context, dnd_owner);
_gdk_wayland_drag_context_set_dest_window (device->drop_context,
dest_window, serial);
_gdk_wayland_drag_context_set_coords (device->drop_context,
@ -601,10 +607,21 @@ data_device_drop (void *data,
struct wl_data_device *data_device)
{
GdkWaylandDeviceData *device = (GdkWaylandDeviceData *) data;
GdkWindow *local_dnd_owner;
g_debug (G_STRLOC ": %s data_device = %p",
G_STRFUNC, data_device);
local_dnd_owner = gdk_selection_owner_get (gdk_drag_get_selection (device->drop_context));
if (local_dnd_owner)
{
GdkDragContext *source_context;
source_context = gdk_wayland_drag_context_lookup_by_source_window (local_dnd_owner);
gdk_wayland_drag_context_undo_grab (source_context);
}
_gdk_wayland_drag_context_emit_event (device->drop_context,
GDK_DROP_START, GDK_CURRENT_TIME);
}