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https://gitlab.freedesktop.org/wlroots/wlroots.git
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data-control-v1: initial protocol implementation
This commit is contained in:
emersion
parent
84c904752f
commit
99d879c887
7 changed files with 691 additions and 5 deletions
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@ -27,6 +27,7 @@ lib_wlr_types = static_library(
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'wlr_buffer.c',
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'wlr_compositor.c',
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'wlr_cursor.c',
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'wlr_data_control_v1.c',
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'wlr_export_dmabuf_v1.c',
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'wlr_foreign_toplevel_management_v1.c',
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'wlr_gamma_control_v1.c',
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413
types/wlr_data_control_v1.c
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413
types/wlr_data_control_v1.c
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@ -0,0 +1,413 @@
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#define _POSIX_C_SOURCE 200809L
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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 <unistd.h>
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#include <wlr/types/wlr_data_control_v1.h>
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#include <wlr/types/wlr_data_device.h>
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#include "util/signal.h"
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#include "wlr-data-control-unstable-v1-protocol.h"
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#define DATA_CONTROL_MANAGER_VERSION 1
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struct client_data_source {
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struct wlr_data_source source;
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struct wl_resource *resource;
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bool finalized;
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};
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static const struct wlr_data_source_impl client_source_impl;
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static struct client_data_source *
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client_data_source_from_source(struct wlr_data_source *wlr_source) {
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assert(wlr_source->impl == &client_source_impl);
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return (struct client_data_source *)wlr_source;
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}
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static void client_source_send(struct wlr_data_source *wlr_source,
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const char *mime_type, int fd) {
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struct client_data_source *source =
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client_data_source_from_source(wlr_source);
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zwlr_data_control_source_v1_send_send(source->resource, mime_type, fd);
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close(fd);
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}
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static void client_source_cancel(struct wlr_data_source *wlr_source) {
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struct client_data_source *source =
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client_data_source_from_source(wlr_source);
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zwlr_data_control_source_v1_send_cancelled(source->resource);
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// Make the resource inert
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wl_resource_set_user_data(source->resource, NULL);
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free(source);
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}
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static const struct wlr_data_source_impl client_source_impl = {
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.send = client_source_send,
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.cancel = client_source_cancel,
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};
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static const struct zwlr_data_control_source_v1_interface source_impl;
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static struct client_data_source *source_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_source_v1_interface, &source_impl));
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return wl_resource_get_user_data(resource);
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}
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static void source_handle_offer(struct wl_client *client,
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struct wl_resource *resource, const char *mime_type) {
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struct client_data_source *source = source_from_resource(resource);
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if (source == NULL) {
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return;
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}
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if (source->finalized) {
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wl_resource_post_error(resource,
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ZWLR_DATA_CONTROL_SOURCE_V1_ERROR_INVALID_OFFER,
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"cannot mutate offer after set_selection");
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return;
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}
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char *dup_mime_type = strdup(mime_type);
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if (dup_mime_type == NULL) {
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wl_resource_post_no_memory(resource);
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return;
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}
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char **p = wl_array_add(&source->source.mime_types, sizeof(char *));
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if (p == NULL) {
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free(dup_mime_type);
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wl_resource_post_no_memory(resource);
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return;
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}
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*p = dup_mime_type;
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}
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static void source_handle_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 const struct zwlr_data_control_source_v1_interface source_impl = {
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.offer = source_handle_offer,
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.destroy = source_handle_destroy,
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};
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static void source_handle_resource_destroy(struct wl_resource *resource) {
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struct client_data_source *source = source_from_resource(resource);
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if (source == NULL) {
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return;
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}
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wlr_data_source_cancel(&source->source);
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}
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static const struct zwlr_data_control_offer_v1_interface offer_impl;
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static struct wlr_data_control_v1 *control_from_offer_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_offer_v1_interface, &offer_impl));
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return wl_resource_get_user_data(resource);
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}
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static void offer_handle_receive(struct wl_client *client,
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struct wl_resource *resource, const char *mime_type, int fd) {
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struct wlr_data_control_v1 *control = control_from_offer_resource(resource);
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if (control == NULL || control->seat->selection_source == NULL) {
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close(fd);
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return;
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}
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wlr_data_source_send(control->seat->selection_source, mime_type, fd);
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}
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static void offer_handle_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 const struct zwlr_data_control_offer_v1_interface offer_impl = {
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.receive = offer_handle_receive,
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.destroy = offer_handle_destroy,
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};
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static void offer_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_data_control_v1 *control = control_from_offer_resource(resource);
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if (control != NULL) {
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control->selection_offer_resource = NULL;
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}
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}
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static struct wl_resource *create_offer(struct wlr_data_control_v1 *control,
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struct wlr_data_source *source) {
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struct wl_client *client = wl_resource_get_client(control->resource);
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uint32_t version = wl_resource_get_version(control->resource);
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struct wl_resource *resource = wl_resource_create(client,
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&zwlr_data_control_offer_v1_interface, version, 0);
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if (resource == NULL) {
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return NULL;
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}
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wl_resource_set_implementation(resource, &offer_impl, control,
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offer_handle_resource_destroy);
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zwlr_data_control_v1_send_data_offer(control->resource, resource);
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char **p;
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wl_array_for_each(p, &source->mime_types) {
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zwlr_data_control_offer_v1_send_offer(resource, *p);
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}
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return resource;
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}
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static const struct zwlr_data_control_v1_interface control_impl;
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static struct wlr_data_control_v1 *control_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_v1_interface, &control_impl));
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return wl_resource_get_user_data(resource);
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}
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static void control_handle_set_selection(struct wl_client *client,
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struct wl_resource *control_resource,
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struct wl_resource *source_resource) {
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struct wlr_data_control_v1 *control =
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control_from_resource(control_resource);
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struct client_data_source *source = source_from_resource(source_resource);
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if (control == NULL || source == NULL) {
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return;
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}
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struct wl_display *display = wl_client_get_display(client);
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wlr_seat_set_selection(control->seat, &source->source,
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wl_display_next_serial(display));
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}
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static void control_handle_destroy(struct wl_client *client,
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struct wl_resource *control_resource) {
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wl_resource_destroy(control_resource);
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}
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static const struct zwlr_data_control_v1_interface control_impl = {
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.set_selection = control_handle_set_selection,
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.destroy = control_handle_destroy,
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};
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static void control_send_selection(struct wlr_data_control_v1 *control) {
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struct wlr_data_source *source = control->seat->selection_source;
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if (control->selection_offer_resource != NULL) {
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// Make the offer inert
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wl_resource_set_user_data(control->selection_offer_resource, NULL);
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}
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control->selection_offer_resource = NULL;
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if (source != NULL) {
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control->selection_offer_resource = create_offer(control, source);
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if (control->selection_offer_resource == NULL) {
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wl_resource_post_no_memory(control->resource);
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return;
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}
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}
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zwlr_data_control_v1_send_selection(control->resource,
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control->selection_offer_resource);
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}
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static void control_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_data_control_v1 *control = control_from_resource(resource);
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wlr_data_control_v1_destroy(control);
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}
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static void control_handle_seat_destroy(struct wl_listener *listener,
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void *data) {
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struct wlr_data_control_v1 *control =
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wl_container_of(listener, control, seat_destroy);
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wlr_data_control_v1_destroy(control);
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}
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static void control_handle_seat_selection(struct wl_listener *listener,
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void *data) {
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struct wlr_data_control_v1 *control =
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wl_container_of(listener, control, seat_selection);
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control_send_selection(control);
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}
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void wlr_data_control_v1_destroy(struct wlr_data_control_v1 *control) {
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if (control == NULL) {
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return;
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}
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zwlr_data_control_v1_send_finished(control->resource);
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// Make the resource inert
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wl_resource_set_user_data(control->resource, NULL);
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wl_list_remove(&control->seat_destroy.link);
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wl_list_remove(&control->link);
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free(control);
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}
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static const struct zwlr_data_control_manager_v1_interface manager_impl;
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static struct wlr_data_control_manager_v1 *manager_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_manager_v1_interface, &manager_impl));
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return wl_resource_get_user_data(resource);
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}
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static void manager_handle_create_data_source(struct wl_client *client,
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struct wl_resource *manager_resource, uint32_t id) {
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struct client_data_source *source =
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calloc(1, sizeof(struct client_data_source));
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if (source == 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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wlr_data_source_init(&source->source, &client_source_impl);
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uint32_t version = wl_resource_get_version(manager_resource);
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source->resource = wl_resource_create(client,
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&zwlr_data_control_source_v1_interface, version, id);
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if (source->resource == NULL) {
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wl_resource_post_no_memory(manager_resource);
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free(source);
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return;
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}
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wl_resource_set_implementation(source->resource, &source_impl, source,
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source_handle_resource_destroy);
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}
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static void manager_handle_get_data_control(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_data_control_manager_v1 *manager =
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manager_from_resource(manager_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 wlr_data_control_v1 *control =
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calloc(1, sizeof(struct wlr_data_control_v1));
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if (control == 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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control->manager = manager;
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control->seat = seat_client->seat;
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uint32_t version = wl_resource_get_version(manager_resource);
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control->resource = wl_resource_create(client,
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&zwlr_data_control_v1_interface, version, id);
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if (control->resource == NULL) {
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wl_resource_post_no_memory(manager_resource);
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free(control);
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return;
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}
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wl_resource_set_implementation(control->resource, &control_impl, control,
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control_handle_resource_destroy);
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struct wl_resource *resource = control->resource;
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control->seat_destroy.notify = control_handle_seat_destroy;
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wl_signal_add(&control->seat->events.destroy, &control->seat_destroy);
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control->seat_selection.notify = control_handle_seat_selection;
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wl_signal_add(&control->seat->events.destroy, &control->seat_selection);
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wl_list_insert(&manager->controls, &control->link);
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wlr_signal_emit_safe(&manager->events.new_control, control);
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// At this point maybe the compositor decided to destroy the control. If
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// it's the case then the resource will be inert.
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control = control_from_resource(resource);
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if (control != NULL) {
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control_send_selection(control);
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}
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}
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static void manager_handle_destroy(struct wl_client *client,
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struct wl_resource *manager_resource) {
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wl_resource_destroy(manager_resource);
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}
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static const struct zwlr_data_control_manager_v1_interface manager_impl = {
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.create_data_source = manager_handle_create_data_source,
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.get_data_control = manager_handle_get_data_control,
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.destroy = manager_handle_destroy,
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};
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static void manager_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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static void manager_bind(struct wl_client *client, void *data, uint32_t version,
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uint32_t id) {
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struct wlr_data_control_manager_v1 *manager = data;
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struct wl_resource *resource = wl_resource_create(client,
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&zwlr_data_control_manager_v1_interface, 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, &manager_impl, manager,
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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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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_data_control_manager_v1 *manager =
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wl_container_of(listener, manager, display_destroy);
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wlr_data_control_manager_v1_destroy(manager);
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}
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struct wlr_data_control_manager_v1 *wlr_data_control_manager_v1_create(
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struct wl_display *display) {
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struct wlr_data_control_manager_v1 *manager =
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calloc(1, sizeof(struct wlr_data_control_manager_v1));
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if (manager == NULL) {
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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->controls);
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wl_signal_init(&manager->events.destroy);
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wl_signal_init(&manager->events.new_control);
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manager->global = wl_global_create(display,
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&zwlr_data_control_manager_v1_interface, DATA_CONTROL_MANAGER_VERSION,
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manager, manager_bind);
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if (manager->global == NULL) {
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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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void wlr_data_control_manager_v1_destroy(
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struct wlr_data_control_manager_v1 *manager) {
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if (manager == NULL) {
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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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struct wlr_data_control_v1 *control, *control_tmp;
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wl_list_for_each_safe(control, control_tmp, &manager->controls, link) {
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wl_resource_destroy(control->resource);
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}
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struct wl_resource *resource, *resource_tmp;
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wl_resource_for_each_safe(resource, resource_tmp, &manager->resources) {
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wl_resource_destroy(resource);
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}
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wl_list_remove(&manager->display_destroy.link);
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free(manager);
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}
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