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wayland: Keep track of the origin surface and drag point on DnD

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Keeping track of the surface will be necessary in case it is destroyed
during DnD, and the coordinates will be useful when figuring out the
snap back coordinates.
This commit is contained in:
Carlos Garnacho 2014-09-30 17:01:43 +02:00 committed by Jasper St. Pierre
parent 18db5d0799
commit 0510c3a621
1 changed files with 44 additions and 4 deletions
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48
src/wayland/meta-wayland-data-device.c
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@ -177,6 +177,11 @@ struct _MetaWaylandDragGrab {
MetaWaylandDataSource *drag_data_source;
struct wl_listener drag_data_source_listener;
MetaWaylandSurface *drag_origin;
struct wl_listener drag_origin_listener;
int drag_start_x, drag_start_y;
};
static void
@ -262,6 +267,12 @@ drag_grab_motion (MetaWaylandPointerGrab *grab,
static void
data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
{
if (drag_grab->drag_origin)
{
drag_grab->drag_origin = NULL;
wl_list_remove (&drag_grab->drag_origin_listener.link);
}
if (drag_grab->drag_surface)
{
drag_grab->drag_surface = NULL;
@ -303,6 +314,16 @@ static const MetaWaylandPointerGrabInterface drag_grab_interface = {
drag_grab_button,
};
static void
destroy_data_device_origin (struct wl_listener *listener, void *data)
{
MetaWaylandDragGrab *drag_grab =
wl_container_of (listener, drag_grab, drag_origin_listener);
drag_grab->drag_origin = NULL;
data_device_end_drag_grab (drag_grab);
}
static void
destroy_data_device_source (struct wl_listener *listener, void *data)
{
@ -331,12 +352,20 @@ data_device_start_drag (struct wl_client *client,
{
MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
MetaWaylandSurface *surface = NULL;
MetaWaylandDragGrab *drag_grab;
ClutterPoint pos;
if ((seat->pointer.button_count == 0 ||
seat->pointer.grab_serial != serial ||
!seat->pointer.focus_surface ||
seat->pointer.focus_surface != wl_resource_get_user_data (origin_resource)))
if (origin_resource)
surface = wl_resource_get_user_data (origin_resource);
if (!surface)
return;
if (seat->pointer.button_count == 0 ||
seat->pointer.grab_serial != serial ||
!seat->pointer.focus_surface ||
seat->pointer.focus_surface != surface)
return;
/* FIXME: Check that the data source type array isn't empty. */
@ -353,6 +382,17 @@ data_device_start_drag (struct wl_client *client,
drag_grab->drag_client = client;
drag_grab->seat = seat;
drag_grab->drag_origin = surface;
drag_grab->drag_origin_listener.notify = destroy_data_device_origin;
wl_resource_add_destroy_listener (origin_resource,
&drag_grab->drag_origin_listener);
clutter_input_device_get_coords (seat->pointer.device, NULL, &pos);
clutter_actor_transform_stage_point (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
pos.x, pos.y, &pos.x, &pos.y);
drag_grab->drag_start_x = pos.x;
drag_grab->drag_start_y = pos.y;
if (source_resource)
{
drag_grab->drag_data_source = wl_resource_get_user_data (source_resource);