diff options
| -rw-r--r-- | include/wlr/types/wlr_data_device.h | 10 | ||||
| -rw-r--r-- | types/wlr_data_device.c | 97 |
2 files changed, 104 insertions, 3 deletions
diff --git a/include/wlr/types/wlr_data_device.h b/include/wlr/types/wlr_data_device.h index 5cb839bd..d5be311f 100644 --- a/include/wlr/types/wlr_data_device.h +++ b/include/wlr/types/wlr_data_device.h @@ -11,6 +11,10 @@ struct wlr_data_offer { struct wl_resource *resource; struct wlr_data_source *source; + uint32_t dnd_actions; + enum wl_data_device_manager_dnd_action preferred_dnd_action; + bool in_ask; + struct wl_listener source_destroy; }; @@ -22,8 +26,10 @@ struct wlr_data_source { bool accepted; - // TODO - //bool actions_set; + // drag and drop + enum wl_data_device_manager_dnd_action current_dnd_action; + uint32_t dnd_actions; + uint32_t compositor_action; struct { struct wl_signal destroy; diff --git a/types/wlr_data_device.c b/types/wlr_data_device.c index 769974a9..5760cfc3 100644 --- a/types/wlr_data_device.c +++ b/types/wlr_data_device.c @@ -1,6 +1,7 @@ #define _XOPEN_SOURCE 700 #include <stdlib.h> #include <string.h> +#include <strings.h> #include <assert.h> #include <unistd.h> #include <wayland-server.h> @@ -8,6 +9,11 @@ #include <wlr/types/wlr_seat.h> #include <wlr/types/wlr_data_device.h> + +#define ALL_ACTIONS (WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY | \ + WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE | \ + WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK) + static void data_device_start_drag(struct wl_client *client, struct wl_resource *resource, struct wl_resource *source_resource, struct wl_resource *origin, struct wl_resource *icon, uint32_t serial) { @@ -92,10 +98,99 @@ static void data_offer_finish(struct wl_client *client, data_source_notify_finish(offer->source); } +static uint32_t data_offer_choose_action(struct wlr_data_offer *offer) { + uint32_t available_actions, preferred_action = 0; + uint32_t source_actions, offer_actions; + + if (wl_resource_get_version(offer->resource) >= + WL_DATA_OFFER_ACTION_SINCE_VERSION) { + offer_actions = offer->dnd_actions; + preferred_action = offer->preferred_dnd_action; + } else { + offer_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY; + } + + if (wl_resource_get_version(offer->source->resource) >= + WL_DATA_SOURCE_ACTION_SINCE_VERSION) { + source_actions = offer->source->dnd_actions; + } else { + source_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY; + } + + available_actions = offer_actions & source_actions; + + if (!available_actions) { + return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE; + } + + if (offer->source->seat && + offer->source->compositor_action & available_actions) { + return offer->source->compositor_action; + } + + // If the dest side has a preferred DnD action, use it + if ((preferred_action & available_actions) != 0) { + return preferred_action; + } + + // Use the first found action, in bit order + return 1 << (ffs(available_actions) - 1); +} + +static void data_offer_update_action(struct wlr_data_offer *offer) { + uint32_t action; + + if (!offer->source) { + return; + } + + action = data_offer_choose_action(offer); + + if (offer->source->current_dnd_action == action) { + return; + } + + offer->source->current_dnd_action = action; + + if (offer->in_ask) { + return; + } + + if (wl_resource_get_version(offer->source->resource) >= + WL_DATA_SOURCE_ACTION_SINCE_VERSION) { + wl_data_source_send_action(offer->source->resource, action); + } + + if (wl_resource_get_version(offer->resource) >= + WL_DATA_OFFER_ACTION_SINCE_VERSION) { + wl_data_offer_send_action(offer->resource, action); + } +} + static void data_offer_set_actions(struct wl_client *client, struct wl_resource *resource, uint32_t dnd_actions, uint32_t preferred_action) { - // TODO + struct wlr_data_offer *offer = wl_resource_get_user_data(resource); + + if (dnd_actions & ~ALL_ACTIONS) { + wl_resource_post_error(offer->resource, + WL_DATA_OFFER_ERROR_INVALID_ACTION_MASK, + "invalid action mask %x", dnd_actions); + return; + } + + if (preferred_action && (!(preferred_action & dnd_actions) || + __builtin_popcount(preferred_action) > 1)) { + wl_resource_post_error(offer->resource, + WL_DATA_OFFER_ERROR_INVALID_ACTION, + "invalid action %x", preferred_action); + return; + } + + offer->dnd_actions = dnd_actions; + offer->preferred_dnd_action = preferred_action; + + data_offer_update_action(offer); } static void data_offer_resource_destroy(struct wl_resource *resource) { |