283 lines
8.4 KiB
C
283 lines
8.4 KiB
C
#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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#define DATA_DEVICE_MANAGER_VERSION 3
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static const struct wl_data_device_interface data_device_impl;
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static struct wlr_seat_client *seat_client_from_data_device_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &wl_data_device_interface,
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&data_device_impl));
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return wl_resource_get_user_data(resource);
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}
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static void data_device_set_selection(struct wl_client *client,
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struct wl_resource *device_resource,
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struct wl_resource *source_resource, uint32_t serial) {
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struct wlr_client_data_source *source = NULL;
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if (source_resource != NULL) {
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source = client_data_source_from_resource(source_resource);
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}
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struct wlr_seat_client *seat_client =
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seat_client_from_data_device_resource(device_resource);
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struct wlr_data_source *wlr_source = (struct wlr_data_source *)source;
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wlr_seat_set_selection(seat_client->seat, wlr_source, serial);
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}
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static void data_device_start_drag(struct wl_client *client,
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struct wl_resource *device_resource,
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struct wl_resource *source_resource,
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struct wl_resource *origin_resource, struct wl_resource *icon_resource,
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uint32_t serial) {
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struct wlr_seat_client *seat_client =
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seat_client_from_data_device_resource(device_resource);
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struct wlr_surface *origin = wlr_surface_from_resource(origin_resource);
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struct wlr_data_source *source = NULL;
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struct wlr_surface *icon = NULL;
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if (source_resource) {
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struct wlr_client_data_source *client_source =
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client_data_source_from_resource(source_resource);
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source = (struct wlr_data_source *)client_source;
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}
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if (icon_resource) {
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icon = wlr_surface_from_resource(icon_resource);
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}
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if (icon) {
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if (wlr_surface_set_role(icon, "wl_data_device-icon",
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icon_resource, WL_DATA_DEVICE_ERROR_ROLE) < 0) {
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return;
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}
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}
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if (!seat_client_start_drag(seat_client, source, icon, origin, serial)) {
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wl_resource_post_no_memory(device_resource);
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return;
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}
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if (source) {
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source->seat_client = seat_client;
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}
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}
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static void data_device_release(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 const struct wl_data_device_interface data_device_impl = {
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.start_drag = data_device_start_drag,
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.set_selection = data_device_set_selection,
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.release = data_device_release,
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};
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static void data_device_handle_resource_destroy(struct wl_resource *resource) {
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wl_list_remove(wl_resource_get_link(resource));
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}
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void wlr_seat_client_send_selection(struct wlr_seat_client *seat_client) {
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if (wl_list_empty(&seat_client->data_devices)) {
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return;
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}
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if (seat_client->seat->selection_source) {
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struct wlr_data_offer *offer = data_source_send_offer(
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seat_client->seat->selection_source, seat_client);
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if (offer == NULL) {
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return;
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &seat_client->data_devices) {
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wl_data_device_send_selection(resource, offer->resource);
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}
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} else {
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struct wl_resource *resource;
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wl_resource_for_each(resource, &seat_client->data_devices) {
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wl_data_device_send_selection(resource, NULL);
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}
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}
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}
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static void seat_client_selection_source_destroy(
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struct wl_listener *listener, void *data) {
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struct wlr_seat *seat =
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wl_container_of(listener, seat, selection_source_destroy);
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struct wlr_seat_client *seat_client = seat->keyboard_state.focused_client;
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if (seat_client && seat->keyboard_state.focused_surface) {
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struct wl_resource *resource;
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wl_resource_for_each(resource, &seat_client->data_devices) {
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wl_data_device_send_selection(resource, NULL);
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}
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}
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seat->selection_source = NULL;
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wlr_signal_emit_safe(&seat->events.selection, seat);
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}
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void wlr_seat_set_selection(struct wlr_seat *seat,
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struct wlr_data_source *source, uint32_t serial) {
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if (seat->selection_source &&
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seat->selection_serial - serial < UINT32_MAX / 2) {
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return;
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}
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if (seat->selection_source) {
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wl_list_remove(&seat->selection_source_destroy.link);
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wlr_data_source_cancel(seat->selection_source);
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seat->selection_source = NULL;
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}
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seat->selection_source = source;
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seat->selection_serial = serial;
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struct wlr_seat_client *focused_client =
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seat->keyboard_state.focused_client;
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if (focused_client) {
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wlr_seat_client_send_selection(focused_client);
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}
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wlr_signal_emit_safe(&seat->events.selection, seat);
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if (source) {
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seat->selection_source_destroy.notify =
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seat_client_selection_source_destroy;
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wl_signal_add(&source->events.destroy,
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&seat->selection_source_destroy);
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}
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}
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static const struct wl_data_device_manager_interface data_device_manager_impl;
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static struct wlr_data_device_manager *data_device_manager_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &wl_data_device_manager_interface,
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&data_device_manager_impl));
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return wl_resource_get_user_data(resource);
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}
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static void data_device_manager_get_data_device(struct wl_client *client,
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struct wl_resource *manager_resource, uint32_t id,
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struct wl_resource *seat_resource) {
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struct wlr_seat_client *seat_client =
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wlr_seat_client_from_resource(seat_resource);
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struct wl_resource *resource = wl_resource_create(client,
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&wl_data_device_interface, wl_resource_get_version(manager_resource),
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id);
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if (resource == NULL) {
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wl_resource_post_no_memory(manager_resource);
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return;
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}
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wl_resource_set_implementation(resource, &data_device_impl, seat_client,
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&data_device_handle_resource_destroy);
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wl_list_insert(&seat_client->data_devices, wl_resource_get_link(resource));
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}
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static void data_device_manager_create_data_source(struct wl_client *client,
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struct wl_resource *manager_resource, uint32_t id) {
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struct wlr_data_device_manager *manager =
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data_device_manager_from_resource(manager_resource);
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client_data_source_create(client, wl_resource_get_version(manager_resource),
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id, &manager->data_sources);
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}
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static const struct wl_data_device_manager_interface
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data_device_manager_impl = {
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.create_data_source = data_device_manager_create_data_source,
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.get_data_device = data_device_manager_get_data_device,
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};
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static void data_device_manager_handle_resource_destroy(
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struct wl_resource *resource) {
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wl_list_remove(wl_resource_get_link(resource));
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}
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static void data_device_manager_bind(struct wl_client *client,
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void *data, uint32_t version, uint32_t id) {
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struct wlr_data_device_manager *manager = data;
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struct wl_resource *resource = wl_resource_create(client,
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&wl_data_device_manager_interface,
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version, id);
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if (resource == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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wl_resource_set_implementation(resource, &data_device_manager_impl,
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manager, data_device_manager_handle_resource_destroy);
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wl_list_insert(&manager->resources, wl_resource_get_link(resource));
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}
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void wlr_data_device_manager_destroy(struct wlr_data_device_manager *manager) {
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if (!manager) {
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return;
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}
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wlr_signal_emit_safe(&manager->events.destroy, manager);
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wl_list_remove(&manager->display_destroy.link);
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wl_global_destroy(manager->global);
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struct wl_resource *resource, *tmp;
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wl_resource_for_each_safe(resource, tmp, &manager->resources) {
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wl_resource_destroy(resource);
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}
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wl_resource_for_each_safe(resource, tmp, &manager->data_sources) {
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wl_resource_destroy(resource);
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}
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free(manager);
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}
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_data_device_manager *manager =
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wl_container_of(listener, manager, display_destroy);
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wlr_data_device_manager_destroy(manager);
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}
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struct wlr_data_device_manager *wlr_data_device_manager_create(
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struct wl_display *display) {
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struct wlr_data_device_manager *manager =
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calloc(1, sizeof(struct wlr_data_device_manager));
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if (manager == NULL) {
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wlr_log(WLR_ERROR, "could not create data device manager");
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return NULL;
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}
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wl_list_init(&manager->resources);
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wl_list_init(&manager->data_sources);
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wl_signal_init(&manager->events.destroy);
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manager->global =
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wl_global_create(display, &wl_data_device_manager_interface,
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DATA_DEVICE_MANAGER_VERSION, manager, data_device_manager_bind);
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if (!manager->global) {
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wlr_log(WLR_ERROR, "could not create data device manager wl_global");
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free(manager);
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return NULL;
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}
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manager->display_destroy.notify = handle_display_destroy;
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wl_display_add_destroy_listener(display, &manager->display_destroy);
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return manager;
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}
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