SDL
2.0
|
#include <wayland-client-protocol.h>
Data Fields | |
void(* | offer )(void *data, struct wl_data_offer *wl_data_offer, const char *mime_type) |
void(* | source_actions )(void *data, struct wl_data_offer *wl_data_offer, uint32_t source_actions) |
void(* | action )(void *data, struct wl_data_offer *wl_data_offer, uint32_t dnd_action) |
Definition at line 1800 of file wayland-client-protocol.h.
void(* wl_data_offer_listener::action) (void *data, struct wl_data_offer *wl_data_offer, uint32_t dnd_action) |
notify the selected action
This event indicates the action selected by the compositor after matching the source/destination side actions. Only one action (or none) will be offered here.
This event can be emitted multiple times during the drag-and-drop operation in response to destination side action changes through wl_data_offer.set_actions.
This event will no longer be emitted after wl_data_device.drop happened on the drag-and-drop destination, the client must honor the last action received, or the last preferred one set through wl_data_offer.set_actions when handling an "ask" action.
Compositors may also change the selected action on the fly, mainly in response to keyboard modifier changes during the drag-and-drop operation.
The most recent action received is always the valid one. Prior to receiving wl_data_device.drop, the chosen action may change (e.g. due to keyboard modifiers being pressed). At the time of receiving wl_data_device.drop the drag-and-drop destination must honor the last action received.
Action changes may still happen after wl_data_device.drop, especially on "ask" actions, where the drag-and-drop destination may choose another action afterwards. Action changes happening at this stage are always the result of inter-client negotiation, the compositor shall no longer be able to induce a different action.
Upon "ask" actions, it is expected that the drag-and-drop destination may potentially choose a different action and/or mime type, based on wl_data_offer.source_actions and finally chosen by the user (e.g. popping up a menu with the available options). The final wl_data_offer.set_actions and wl_data_offer.accept requests must happen before the call to wl_data_offer.finish.
dnd_action | action selected by the compositor |
Definition at line 1867 of file wayland-client-protocol.h.
void(* wl_data_offer_listener::offer) (void *data, struct wl_data_offer *wl_data_offer, const char *mime_type) |
advertise offered mime type
Sent immediately after creating the wl_data_offer object. One event per offered mime type.
mime_type | offered mime type |
Definition at line 1808 of file wayland-client-protocol.h.
void(* wl_data_offer_listener::source_actions) (void *data, struct wl_data_offer *wl_data_offer, uint32_t source_actions) |
notify the source-side available actions
This event indicates the actions offered by the data source. It will be sent right after wl_data_device.enter, or anytime the source side changes its offered actions through wl_data_source.set_actions.
source_actions | actions offered by the data source |
Definition at line 1821 of file wayland-client-protocol.h.