2018-05-02 10:07:22 +02:00
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#define _XOPEN_SOURCE 700
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_data_device.h>
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#include <wlr/types/wlr_seat.h>
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#include <wlr/util/log.h>
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#include "types/wlr_data_device.h"
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#include "util/signal.h"
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void data_source_notify_finish(struct wlr_data_source *source) {
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assert(source->offer);
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if (source->actions < 0) {
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return;
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}
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if (source->offer->in_ask) {
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wlr_data_source_dnd_action(source, source->current_dnd_action);
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}
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source->offer = NULL;
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wlr_data_source_dnd_finish(source);
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}
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struct wlr_data_offer *data_source_send_offer(struct wlr_data_source *source,
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struct wlr_seat_client *target) {
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if (wl_list_empty(&target->data_devices)) {
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return NULL;
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}
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uint32_t version = wl_resource_get_version(
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wl_resource_from_link(target->data_devices.next));
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struct wlr_data_offer *offer =
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data_offer_create(target->client, source, version);
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if (offer == NULL) {
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return NULL;
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}
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struct wl_resource *target_resource;
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wl_resource_for_each(target_resource, &target->data_devices) {
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wl_data_device_send_data_offer(target_resource, offer->resource);
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}
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char **p;
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wl_array_for_each(p, &source->mime_types) {
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wl_data_offer_send_offer(offer->resource, *p);
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}
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source->offer = offer;
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source->accepted = false;
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return offer;
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}
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void wlr_data_source_init(struct wlr_data_source *source,
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const struct wlr_data_source_impl *impl) {
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assert(impl->send);
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source->impl = impl;
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wl_array_init(&source->mime_types);
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wl_signal_init(&source->events.destroy);
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source->actions = -1;
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}
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void wlr_data_source_finish(struct wlr_data_source *source) {
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if (source == NULL) {
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return;
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}
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wlr_signal_emit_safe(&source->events.destroy, source);
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char **p;
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wl_array_for_each(p, &source->mime_types) {
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free(*p);
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}
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wl_array_release(&source->mime_types);
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}
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void wlr_data_source_send(struct wlr_data_source *source, const char *mime_type,
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int32_t fd) {
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source->impl->send(source, mime_type, fd);
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}
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void wlr_data_source_accept(struct wlr_data_source *source, uint32_t serial,
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const char *mime_type) {
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source->accepted = (mime_type != NULL);
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if (source->impl->accept) {
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source->impl->accept(source, serial, mime_type);
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}
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}
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void wlr_data_source_cancel(struct wlr_data_source *source) {
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if (source->impl->cancel) {
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source->impl->cancel(source);
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}
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}
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void wlr_data_source_dnd_drop(struct wlr_data_source *source) {
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if (source->impl->dnd_drop) {
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source->impl->dnd_drop(source);
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}
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}
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void wlr_data_source_dnd_finish(struct wlr_data_source *source) {
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if (source->impl->dnd_finish) {
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source->impl->dnd_finish(source);
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}
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}
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void wlr_data_source_dnd_action(struct wlr_data_source *source,
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enum wl_data_device_manager_dnd_action action) {
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source->current_dnd_action = action;
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if (source->impl->dnd_action) {
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source->impl->dnd_action(source, action);
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}
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}
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static const struct wl_data_source_interface data_source_impl;
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struct wlr_client_data_source *client_data_source_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &wl_data_source_interface,
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&data_source_impl));
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return wl_resource_get_user_data(resource);
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}
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static void client_data_source_accept(struct wlr_data_source *wlr_source,
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uint32_t serial, const char *mime_type);
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static struct wlr_client_data_source *client_data_source_from_wlr_data_source(
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struct wlr_data_source *wlr_source) {
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assert(wlr_source->impl->accept == client_data_source_accept);
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return (struct wlr_client_data_source *)wlr_source;
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}
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static void client_data_source_accept(struct wlr_data_source *wlr_source,
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uint32_t serial, const char *mime_type) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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wl_data_source_send_target(source->resource, mime_type);
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}
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static void client_data_source_send(struct wlr_data_source *wlr_source,
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const char *mime_type, int32_t fd) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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wl_data_source_send_send(source->resource, mime_type, fd);
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close(fd);
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}
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static void client_data_source_cancel(struct wlr_data_source *wlr_source) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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wl_data_source_send_cancelled(source->resource);
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}
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static void client_data_source_dnd_drop(struct wlr_data_source *wlr_source) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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assert(wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_DND_DROP_PERFORMED_SINCE_VERSION);
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wl_data_source_send_dnd_drop_performed(source->resource);
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}
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static void client_data_source_dnd_finish(struct wlr_data_source *wlr_source) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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assert(wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_DND_FINISHED_SINCE_VERSION);
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wl_data_source_send_dnd_finished(source->resource);
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}
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static void client_data_source_dnd_action(struct wlr_data_source *wlr_source,
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enum wl_data_device_manager_dnd_action action) {
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struct wlr_client_data_source *source =
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client_data_source_from_wlr_data_source(wlr_source);
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assert(wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION);
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wl_data_source_send_action(source->resource, action);
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}
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static void data_source_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static void data_source_set_actions(struct wl_client *client,
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struct wl_resource *resource, uint32_t dnd_actions) {
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struct wlr_client_data_source *source =
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client_data_source_from_resource(resource);
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if (source->source.actions >= 0) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"cannot set actions more than once");
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return;
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}
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if (dnd_actions & ~DATA_DEVICE_ALL_ACTIONS) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action mask %x", dnd_actions);
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return;
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}
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if (source->source.seat_client) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action change after "
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"wl_data_device.start_drag");
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return;
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}
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source->source.actions = dnd_actions;
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}
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static void data_source_offer(struct wl_client *client,
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struct wl_resource *resource, const char *mime_type) {
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struct wlr_client_data_source *source =
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client_data_source_from_resource(resource);
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char **p = wl_array_add(&source->source.mime_types, sizeof(*p));
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if (p) {
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*p = strdup(mime_type);
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}
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if (!p || !*p) {
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if (p) {
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source->source.mime_types.size -= sizeof(*p);
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}
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wl_resource_post_no_memory(resource);
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}
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}
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static const struct wl_data_source_interface data_source_impl = {
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.offer = data_source_offer,
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.destroy = data_source_destroy,
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.set_actions = data_source_set_actions,
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};
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static void data_source_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_client_data_source *source =
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client_data_source_from_resource(resource);
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wlr_data_source_finish(&source->source);
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2018-05-03 21:22:51 +02:00
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wl_list_remove(wl_resource_get_link(source->resource));
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2018-05-02 10:07:22 +02:00
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free(source);
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}
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struct wlr_client_data_source *client_data_source_create(
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2018-05-03 21:22:51 +02:00
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struct wl_client *client, uint32_t version, uint32_t id,
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struct wl_list *resource_list) {
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2018-05-02 10:07:22 +02:00
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struct wlr_client_data_source *source =
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calloc(1, sizeof(struct wlr_client_data_source));
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if (source == NULL) {
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return NULL;
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}
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source->resource = wl_resource_create(client, &wl_data_source_interface,
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version, id);
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if (source->resource == NULL) {
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wl_resource_post_no_memory(source->resource);
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free(source);
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return NULL;
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}
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wl_resource_set_implementation(source->resource, &data_source_impl,
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source, data_source_handle_resource_destroy);
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2018-05-03 21:22:51 +02:00
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wl_list_insert(resource_list, wl_resource_get_link(source->resource));
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2018-05-02 10:07:22 +02:00
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source->impl.accept = client_data_source_accept;
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source->impl.send = client_data_source_send;
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source->impl.cancel = client_data_source_cancel;
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if (wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_DND_DROP_PERFORMED_SINCE_VERSION) {
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source->impl.dnd_drop = client_data_source_dnd_drop;
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}
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if (wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_DND_FINISHED_SINCE_VERSION) {
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source->impl.dnd_finish = client_data_source_dnd_finish;
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}
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if (wl_resource_get_version(source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
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source->impl.dnd_action = client_data_source_dnd_action;
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}
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wlr_data_source_init(&source->source, &source->impl);
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return source;
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}
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