| /* |
| * Copyright © 2011 Kristian Høgsberg |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and its |
| * documentation for any purpose is hereby granted without fee, provided that |
| * the above copyright notice appear in all copies and that both that copyright |
| * notice and this permission notice appear in supporting documentation, and |
| * that the name of the copyright holders not be used in advertising or |
| * publicity pertaining to distribution of the software without specific, |
| * written prior permission. The copyright holders make no representations |
| * about the suitability of this software for any purpose. It is provided "as |
| * is" without express or implied warranty. |
| * |
| * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| * OF THIS SOFTWARE. |
| */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <stdio.h> |
| |
| #include "wayland-private.h" |
| #include "wayland-server.h" |
| |
| static void |
| data_offer_accept(struct wl_client *client, struct wl_resource *resource, |
| uint32_t serial, const char *mime_type) |
| { |
| struct wl_data_offer *offer = resource->data; |
| |
| /* FIXME: Check that client is currently focused by the input |
| * device that is currently dragging this data source. Should |
| * this be a wl_data_device request? */ |
| |
| if (offer->source) |
| offer->source->accept(offer->source, serial, mime_type); |
| } |
| |
| static void |
| data_offer_receive(struct wl_client *client, struct wl_resource *resource, |
| const char *mime_type, int32_t fd) |
| { |
| struct wl_data_offer *offer = resource->data; |
| |
| if (offer->source) |
| offer->source->send(offer->source, mime_type, fd); |
| else |
| close(fd); |
| } |
| |
| static void |
| data_offer_destroy(struct wl_client *client, struct wl_resource *resource) |
| { |
| wl_resource_destroy(resource); |
| } |
| |
| static const struct wl_data_offer_interface data_offer_interface = { |
| data_offer_accept, |
| data_offer_receive, |
| data_offer_destroy, |
| }; |
| |
| static void |
| destroy_data_offer(struct wl_resource *resource) |
| { |
| struct wl_data_offer *offer = resource->data; |
| |
| if (offer->source) |
| wl_list_remove(&offer->source_destroy_listener.link); |
| free(offer); |
| } |
| |
| static void |
| destroy_offer_data_source(struct wl_listener *listener, void *data) |
| { |
| struct wl_data_offer *offer; |
| |
| offer = container_of(listener, struct wl_data_offer, |
| source_destroy_listener); |
| |
| offer->source = NULL; |
| } |
| |
| static struct wl_resource * |
| wl_data_source_send_offer(struct wl_data_source *source, |
| struct wl_resource *target) |
| { |
| struct wl_data_offer *offer; |
| char **p; |
| |
| offer = malloc(sizeof *offer); |
| if (offer == NULL) |
| return NULL; |
| |
| wl_resource_init(&offer->resource, &wl_data_offer_interface, |
| &data_offer_interface, 0, offer); |
| offer->resource.destroy = destroy_data_offer; |
| |
| offer->source = source; |
| offer->source_destroy_listener.notify = destroy_offer_data_source; |
| wl_signal_add(&source->resource.destroy_signal, |
| &offer->source_destroy_listener); |
| |
| wl_client_add_resource(target->client, &offer->resource); |
| |
| wl_data_device_send_data_offer(target, &offer->resource); |
| |
| wl_array_for_each(p, &source->mime_types) |
| wl_data_offer_send_offer(&offer->resource, *p); |
| |
| return &offer->resource; |
| } |
| |
| static void |
| data_source_offer(struct wl_client *client, |
| struct wl_resource *resource, |
| const char *type) |
| { |
| struct wl_data_source *source = resource->data; |
| char **p; |
| |
| p = wl_array_add(&source->mime_types, sizeof *p); |
| if (p) |
| *p = strdup(type); |
| if (!p || !*p) |
| wl_resource_post_no_memory(resource); |
| } |
| |
| static void |
| data_source_destroy(struct wl_client *client, struct wl_resource *resource) |
| { |
| wl_resource_destroy(resource); |
| } |
| |
| static struct wl_data_source_interface data_source_interface = { |
| data_source_offer, |
| data_source_destroy |
| }; |
| |
| static struct wl_resource * |
| find_resource(struct wl_list *list, struct wl_client *client) |
| { |
| struct wl_resource *r; |
| |
| wl_list_for_each(r, list, link) { |
| if (r->client == client) |
| return r; |
| } |
| |
| return NULL; |
| } |
| |
| static void |
| destroy_drag_focus(struct wl_listener *listener, void *data) |
| { |
| struct wl_seat *seat = |
| container_of(listener, struct wl_seat, drag_focus_listener); |
| |
| seat->drag_focus_resource = NULL; |
| } |
| |
| static void |
| drag_grab_focus(struct wl_pointer_grab *grab, |
| struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y) |
| { |
| struct wl_seat *seat = container_of(grab, struct wl_seat, drag_grab); |
| struct wl_resource *resource, *offer = NULL; |
| struct wl_display *display; |
| uint32_t serial; |
| |
| if (seat->drag_focus_resource) { |
| wl_data_device_send_leave(seat->drag_focus_resource); |
| wl_list_remove(&seat->drag_focus_listener.link); |
| seat->drag_focus_resource = NULL; |
| seat->drag_focus = NULL; |
| } |
| |
| if (!surface) |
| return; |
| |
| if (!seat->drag_data_source && |
| surface->resource.client != seat->drag_client) |
| return; |
| |
| resource = find_resource(&seat->drag_resource_list, |
| surface->resource.client); |
| if (!resource) |
| return; |
| |
| display = wl_client_get_display(resource->client); |
| serial = wl_display_next_serial(display); |
| |
| if (seat->drag_data_source) |
| offer = wl_data_source_send_offer(seat->drag_data_source, |
| resource); |
| |
| wl_data_device_send_enter(resource, serial, &surface->resource, |
| x, y, offer); |
| |
| seat->drag_focus = surface; |
| seat->drag_focus_listener.notify = destroy_drag_focus; |
| wl_signal_add(&resource->destroy_signal, |
| &seat->drag_focus_listener); |
| seat->drag_focus_resource = resource; |
| grab->focus = surface; |
| } |
| |
| static void |
| drag_grab_motion(struct wl_pointer_grab *grab, |
| uint32_t time, wl_fixed_t x, wl_fixed_t y) |
| { |
| struct wl_seat *seat = container_of(grab, struct wl_seat, drag_grab); |
| |
| if (seat->drag_focus_resource) |
| wl_data_device_send_motion(seat->drag_focus_resource, |
| time, x, y); |
| } |
| |
| static void |
| data_device_end_drag_grab(struct wl_seat *seat) |
| { |
| if (seat->drag_surface) { |
| seat->drag_surface = NULL; |
| wl_signal_emit(&seat->drag_icon_signal, NULL); |
| wl_list_remove(&seat->drag_icon_listener.link); |
| } |
| |
| drag_grab_focus(&seat->drag_grab, NULL, |
| wl_fixed_from_int(0), wl_fixed_from_int(0)); |
| |
| wl_pointer_end_grab(seat->pointer); |
| |
| seat->drag_data_source = NULL; |
| seat->drag_client = NULL; |
| } |
| |
| static void |
| drag_grab_button(struct wl_pointer_grab *grab, |
| uint32_t time, uint32_t button, uint32_t state_w) |
| { |
| struct wl_seat *seat = container_of(grab, struct wl_seat, drag_grab); |
| enum wl_pointer_button_state state = state_w; |
| |
| if (seat->drag_focus_resource && |
| seat->pointer->grab_button == button && |
| state == WL_POINTER_BUTTON_STATE_RELEASED) |
| wl_data_device_send_drop(seat->drag_focus_resource); |
| |
| if (seat->pointer->button_count == 0 && |
| state == WL_POINTER_BUTTON_STATE_RELEASED) { |
| if (seat->drag_data_source) |
| wl_list_remove(&seat->drag_data_source_listener.link); |
| data_device_end_drag_grab(seat); |
| } |
| } |
| |
| static const struct wl_pointer_grab_interface drag_grab_interface = { |
| drag_grab_focus, |
| drag_grab_motion, |
| drag_grab_button, |
| }; |
| |
| static void |
| destroy_data_device_source(struct wl_listener *listener, void *data) |
| { |
| struct wl_seat *seat = container_of(listener, struct wl_seat, |
| drag_data_source_listener); |
| |
| data_device_end_drag_grab(seat); |
| } |
| |
| static void |
| destroy_data_device_icon(struct wl_listener *listener, void *data) |
| { |
| struct wl_seat *seat = container_of(listener, struct wl_seat, |
| drag_icon_listener); |
| |
| seat->drag_surface = NULL; |
| } |
| |
| static void |
| data_device_start_drag(struct wl_client *client, struct wl_resource *resource, |
| struct wl_resource *source_resource, |
| struct wl_resource *origin_resource, |
| struct wl_resource *icon_resource, uint32_t serial) |
| { |
| struct wl_seat *seat = resource->data; |
| |
| /* FIXME: Check that client has implicit grab on the origin |
| * surface that matches the given time. */ |
| |
| /* FIXME: Check that the data source type array isn't empty. */ |
| |
| seat->drag_grab.interface = &drag_grab_interface; |
| |
| seat->drag_client = client; |
| seat->drag_data_source = NULL; |
| |
| if (source_resource) { |
| seat->drag_data_source = source_resource->data; |
| seat->drag_data_source_listener.notify = |
| destroy_data_device_source; |
| wl_signal_add(&source_resource->destroy_signal, |
| &seat->drag_data_source_listener); |
| } |
| |
| if (icon_resource) { |
| seat->drag_surface = icon_resource->data; |
| seat->drag_icon_listener.notify = destroy_data_device_icon; |
| wl_signal_add(&icon_resource->destroy_signal, |
| &seat->drag_icon_listener); |
| wl_signal_emit(&seat->drag_icon_signal, icon_resource); |
| } |
| |
| wl_pointer_set_focus(seat->pointer, NULL, |
| wl_fixed_from_int(0), wl_fixed_from_int(0)); |
| wl_pointer_start_grab(seat->pointer, &seat->drag_grab); |
| } |
| |
| static void |
| destroy_selection_data_source(struct wl_listener *listener, void *data) |
| { |
| struct wl_seat *seat = container_of(listener, struct wl_seat, |
| selection_data_source_listener); |
| struct wl_resource *data_device; |
| struct wl_resource *focus = NULL; |
| |
| seat->selection_data_source = NULL; |
| |
| if (seat->keyboard) |
| focus = seat->keyboard->focus_resource; |
| if (focus) { |
| data_device = find_resource(&seat->drag_resource_list, |
| focus->client); |
| if (data_device) |
| wl_data_device_send_selection(data_device, NULL); |
| } |
| |
| wl_signal_emit(&seat->selection_signal, seat); |
| } |
| |
| WL_EXPORT void |
| wl_seat_set_selection(struct wl_seat *seat, struct wl_data_source *source, |
| uint32_t serial) |
| { |
| struct wl_resource *data_device, *offer; |
| struct wl_resource *focus = NULL; |
| |
| if (seat->selection_data_source && |
| seat->selection_serial - serial < UINT32_MAX / 2) |
| return; |
| |
| if (seat->selection_data_source) { |
| seat->selection_data_source->cancel(seat->selection_data_source); |
| wl_list_remove(&seat->selection_data_source_listener.link); |
| seat->selection_data_source = NULL; |
| } |
| |
| seat->selection_data_source = source; |
| seat->selection_serial = serial; |
| |
| if (seat->keyboard) |
| focus = seat->keyboard->focus_resource; |
| if (focus) { |
| data_device = find_resource(&seat->drag_resource_list, |
| focus->client); |
| if (data_device && source) { |
| offer = wl_data_source_send_offer(seat->selection_data_source, |
| data_device); |
| wl_data_device_send_selection(data_device, offer); |
| } else if (data_device) { |
| wl_data_device_send_selection(data_device, NULL); |
| } |
| } |
| |
| wl_signal_emit(&seat->selection_signal, seat); |
| |
| if (source) { |
| seat->selection_data_source_listener.notify = |
| destroy_selection_data_source; |
| wl_signal_add(&source->resource.destroy_signal, |
| &seat->selection_data_source_listener); |
| } |
| } |
| |
| static void |
| data_device_set_selection(struct wl_client *client, |
| struct wl_resource *resource, |
| struct wl_resource *source_resource, uint32_t serial) |
| { |
| if (!source_resource) |
| return; |
| |
| /* FIXME: Store serial and check against incoming serial here. */ |
| wl_seat_set_selection(resource->data, source_resource->data, |
| serial); |
| } |
| |
| static const struct wl_data_device_interface data_device_interface = { |
| data_device_start_drag, |
| data_device_set_selection, |
| }; |
| |
| static void |
| destroy_data_source(struct wl_resource *resource) |
| { |
| struct wl_data_source *source = |
| container_of(resource, struct wl_data_source, resource); |
| char **p; |
| |
| wl_array_for_each(p, &source->mime_types) |
| free(*p); |
| |
| wl_array_release(&source->mime_types); |
| |
| source->resource.object.id = 0; |
| } |
| |
| static void |
| client_source_accept(struct wl_data_source *source, |
| uint32_t time, const char *mime_type) |
| { |
| wl_data_source_send_target(&source->resource, mime_type); |
| } |
| |
| static void |
| client_source_send(struct wl_data_source *source, |
| const char *mime_type, int32_t fd) |
| { |
| wl_data_source_send_send(&source->resource, mime_type, fd); |
| close(fd); |
| } |
| |
| static void |
| client_source_cancel(struct wl_data_source *source) |
| { |
| wl_data_source_send_cancelled(&source->resource); |
| } |
| |
| static void |
| create_data_source(struct wl_client *client, |
| struct wl_resource *resource, uint32_t id) |
| { |
| struct wl_data_source *source; |
| |
| source = malloc(sizeof *source); |
| if (source == NULL) { |
| wl_resource_post_no_memory(resource); |
| return; |
| } |
| |
| wl_resource_init(&source->resource, &wl_data_source_interface, |
| &data_source_interface, id, source); |
| source->resource.destroy = destroy_data_source; |
| |
| source->accept = client_source_accept; |
| source->send = client_source_send; |
| source->cancel = client_source_cancel; |
| |
| wl_array_init(&source->mime_types); |
| wl_client_add_resource(client, &source->resource); |
| } |
| |
| static void unbind_data_device(struct wl_resource *resource) |
| { |
| wl_list_remove(&resource->link); |
| free(resource); |
| } |
| |
| static void |
| get_data_device(struct wl_client *client, |
| struct wl_resource *manager_resource, |
| uint32_t id, struct wl_resource *seat_resource) |
| { |
| struct wl_seat *seat = seat_resource->data; |
| struct wl_resource *resource; |
| |
| resource = wl_client_add_object(client, &wl_data_device_interface, |
| &data_device_interface, id, |
| seat); |
| |
| wl_list_insert(&seat->drag_resource_list, &resource->link); |
| resource->destroy = unbind_data_device; |
| } |
| |
| static const struct wl_data_device_manager_interface manager_interface = { |
| create_data_source, |
| get_data_device |
| }; |
| |
| static void |
| bind_manager(struct wl_client *client, |
| void *data, uint32_t version, uint32_t id) |
| { |
| wl_client_add_object(client, &wl_data_device_manager_interface, |
| &manager_interface, id, NULL); |
| } |
| |
| WL_EXPORT void |
| wl_data_device_set_keyboard_focus(struct wl_seat *seat) |
| { |
| struct wl_resource *data_device, *focus, *offer; |
| struct wl_data_source *source; |
| |
| if (!seat->keyboard) |
| return; |
| |
| focus = seat->keyboard->focus_resource; |
| if (!focus) |
| return; |
| |
| data_device = find_resource(&seat->drag_resource_list, |
| focus->client); |
| if (!data_device) |
| return; |
| |
| source = seat->selection_data_source; |
| if (source) { |
| offer = wl_data_source_send_offer(source, data_device); |
| wl_data_device_send_selection(data_device, offer); |
| } |
| } |
| |
| WL_EXPORT int |
| wl_data_device_manager_init(struct wl_display *display) |
| { |
| if (wl_display_add_global(display, |
| &wl_data_device_manager_interface, |
| NULL, bind_manager) == NULL) |
| return -1; |
| |
| return 0; |
| } |