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wlr-data-device: offer set actions

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This commit is contained in:
Tony Crisci 2017-10-13 07:58:46 -04:00
parent 3892acecac
commit 25831d287e
2 changed files with 104 additions and 3 deletions
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10
include/wlr/types/wlr_data_device.h
View file

@ -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;

97
types/wlr_data_device.c
View file

@ -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) {