static void
drag_grab_focus(struct wl_grab *grab, uint32_t time,
struct wl_surface *surface, int32_t x, int32_t y)
{
struct wl_input_device *device =
container_of(grab, struct wl_input_device, drag_grab);
struct wl_resource *resource, *offer;
if (device->drag_focus_resource) {
wl_resource_post_event(device->drag_focus_resource,
WL_DATA_DEVICE_LEAVE);
wl_list_remove(&device->drag_focus_listener.link);
device->drag_focus_resource = NULL;
device->drag_focus = NULL;
}
if (surface)
resource = find_resource(&device->drag_resource_list,
surface->resource.client);
if (surface && resource) {
offer = wl_data_source_send_offer(device->drag_data_source,
resource);
wl_resource_post_event(resource,
WL_DATA_DEVICE_ENTER,
time, surface, x, y, offer);
device->drag_focus = surface;
device->drag_focus_listener.func = destroy_drag_focus;
wl_list_insert(resource->destroy_listener_list.prev,
&device->drag_focus_listener.link);
device->drag_focus_resource = resource;
grab->focus = surface;
}
}
static void
drag_grab_focus(struct wl_pointer_grab *grab,
struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y)
{
struct wl_seat *seat = container_of(grab, struct wl_seat, drag_grab);
struct wl_resource *resource, *offer = NULL;
struct wl_display *display;
uint32_t serial;
if (seat->drag_focus_resource) {
wl_data_device_send_leave(seat->drag_focus_resource);
wl_list_remove(&seat->drag_focus_listener.link);
seat->drag_focus_resource = NULL;
seat->drag_focus = NULL;
}
if (!surface)
return;
if (!seat->drag_data_source &&
surface->resource.client != seat->drag_client)
return;
resource = find_resource(&seat->drag_resource_list,
surface->resource.client);
if (!resource)
return;
display = wl_client_get_display(resource->client);
serial = wl_display_next_serial(display);
if (seat->drag_data_source)
offer = wl_data_source_send_offer(seat->drag_data_source,
resource);
wl_data_device_send_enter(resource, serial, &surface->resource,
x, y, offer);
seat->drag_focus = surface;
seat->drag_focus_listener.notify = destroy_drag_focus;
wl_signal_add(&resource->destroy_signal,
&seat->drag_focus_listener);
seat->drag_focus_resource = resource;
grab->focus = surface;
}
WL_EXPORT void
wl_seat_set_selection(struct wl_seat *seat, struct wl_data_source *source,
uint32_t serial)
{
struct wl_resource *data_device, *offer;
struct wl_resource *focus = NULL;
if (seat->selection_data_source &&
seat->selection_serial - serial < UINT32_MAX / 2)
return;
if (seat->selection_data_source) {
seat->selection_data_source->cancel(seat->selection_data_source);
wl_list_remove(&seat->selection_data_source_listener.link);
seat->selection_data_source = NULL;
}
seat->selection_data_source = source;
seat->selection_serial = serial;
if (seat->keyboard)
focus = seat->keyboard->focus_resource;
if (focus) {
data_device = find_resource(&seat->drag_resource_list,
focus->client);
if (data_device && source) {
offer = wl_data_source_send_offer(seat->selection_data_source,
data_device);
wl_data_device_send_selection(data_device, offer);
} else if (data_device) {
wl_data_device_send_selection(data_device, NULL);
}
}
wl_signal_emit(&seat->selection_signal, seat);
if (source) {
seat->selection_data_source_listener.notify =
destroy_selection_data_source;
wl_signal_add(&source->resource.destroy_signal,
&seat->selection_data_source_listener);
}
}
WL_EXPORT void
wl_data_device_set_keyboard_focus(struct wl_input_device *device)
{
struct wl_resource *data_device, *focus, *offer;
struct wl_data_source *source;
focus = device->keyboard_focus_resource;
if (!focus)
return;
data_device = find_resource(&device->drag_resource_list,
focus->client);
if (!data_device)
return;
source = device->selection_data_source;
if (source) {
offer = wl_data_source_send_offer(source, data_device);
wl_resource_post_event(data_device,
WL_DATA_DEVICE_SELECTION, offer);
}
}
WL_EXPORT void
wl_input_device_set_selection(struct wl_input_device *device,
struct wl_data_source *source, uint32_t time)
{
struct wl_resource *data_device, *focus, *offer;
struct wl_selection_listener *listener, *next;
if (device->selection_data_source) {
device->selection_data_source->cancel(device->selection_data_source);
wl_list_remove(&device->selection_data_source_listener.link);
device->selection_data_source = NULL;
}
device->selection_data_source = source;
focus = device->keyboard_focus_resource;
if (focus) {
data_device = find_resource(&device->drag_resource_list,
focus->client);
if (data_device) {
offer = wl_data_source_send_offer(device->selection_data_source,
data_device);
wl_resource_post_event(data_device,
WL_DATA_DEVICE_SELECTION,
offer);
}
}
wl_list_for_each_safe(listener, next,
&device->selection_listener_list, link)
listener->func(listener, device);
device->selection_data_source_listener.func =
destroy_selection_data_source;
wl_list_insert(source->resource.destroy_listener_list.prev,
&device->selection_data_source_listener.link);
}
WL_EXPORT void
wl_data_device_set_keyboard_focus(struct wl_seat *seat)
{
struct wl_resource *data_device, *focus, *offer;
struct wl_data_source *source;
if (!seat->keyboard)
return;
focus = seat->keyboard->focus_resource;
if (!focus)
return;
data_device = find_resource(&seat->drag_resource_list,
focus->client);
if (!data_device)
return;
source = seat->selection_data_source;
if (source) {
offer = wl_data_source_send_offer(source, data_device);
wl_data_device_send_selection(data_device, offer);
}
}
