| /* |
| * 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 "compositor.h" |
| |
| struct wlsc_data_source { |
| struct wl_resource resource; |
| struct wl_array mime_types; |
| int refcount; |
| }; |
| |
| static void |
| wlsc_data_source_unref(struct wlsc_data_source *source) |
| { |
| source->refcount--; |
| |
| if (source->refcount == 1 && source->resource.object.id != 0) { |
| wl_resource_post_event(&source->resource, |
| WL_DATA_SOURCE_CANCELLED); |
| } else if (source->refcount == 0) { |
| free(source); |
| } |
| } |
| |
| static void |
| data_offer_accept(struct wl_client *client, struct wl_resource *resource, |
| uint32_t time, const char *mime_type) |
| { |
| struct wlsc_data_source *source = 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? */ |
| |
| wl_resource_post_event(&source->resource, |
| WL_DATA_SOURCE_TARGET, mime_type); |
| } |
| |
| static void |
| data_offer_receive(struct wl_client *client, struct wl_resource *resource, |
| const char *mime_type, int32_t fd) |
| { |
| struct wlsc_data_source *source = resource->data; |
| |
| wl_resource_post_event(&source->resource, |
| WL_DATA_SOURCE_SEND, mime_type, fd); |
| close(fd); |
| } |
| |
| static void |
| data_offer_destroy(struct wl_client *client, struct wl_resource *resource) |
| { |
| wl_resource_destroy(resource, wlsc_compositor_get_time()); |
| } |
| |
| static void |
| destroy_data_offer(struct wl_resource *resource) |
| { |
| struct wlsc_data_source *source = resource->data; |
| |
| wlsc_data_source_unref(source); |
| free(resource); |
| } |
| |
| static const struct wl_data_offer_interface data_offer_interface = { |
| data_offer_accept, |
| data_offer_receive, |
| data_offer_destroy, |
| }; |
| |
| static struct wl_resource * |
| wlsc_data_source_send_offer(struct wlsc_data_source *source, |
| struct wl_resource *target) |
| { |
| struct wl_resource *resource; |
| char **p, **end; |
| |
| resource = wl_client_new_object(target->client, |
| &wl_data_offer_interface, |
| &data_offer_interface, source); |
| resource->destroy = destroy_data_offer; |
| |
| source->refcount++; |
| |
| wl_resource_post_event(target, WL_DATA_DEVICE_DATA_OFFER, resource); |
| |
| end = source->mime_types.data + source->mime_types.size; |
| for (p = source->mime_types.data; p < end; p++) |
| wl_resource_post_event(resource, WL_DATA_OFFER_OFFER, *p); |
| |
| |
| return resource; |
| } |
| |
| static void |
| data_source_offer(struct wl_client *client, |
| struct wl_resource *resource, |
| const char *type) |
| { |
| struct wlsc_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, wlsc_compositor_get_time()); |
| } |
| |
| 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, |
| struct wl_resource *resource, uint32_t time) |
| { |
| struct wlsc_input_device *device = |
| container_of(listener, struct wlsc_input_device, |
| drag_focus_listener); |
| |
| device->drag_focus_resource = NULL; |
| } |
| |
| static void |
| drag_set_focus(struct wlsc_input_device *device, |
| struct wl_surface *surface, uint32_t time, |
| int32_t x, int32_t y) |
| { |
| struct wl_resource *resource, *offer; |
| |
| if (device->drag_focus == surface) |
| return; |
| |
| if (device->drag_focus_resource) { |
| wl_resource_post_event(device->drag_focus_resource, |
| WL_DATA_DEVICE_LEAVE); |
| wl_list_remove(&device->drag_focus_listener.link); |
| device->drag_focus_resource = NULL; |
| device->drag_focus = NULL; |
| } |
| |
| if (surface) |
| resource = find_resource(&device->drag_resource_list, |
| surface->resource.client); |
| if (surface && resource) { |
| offer = wlsc_data_source_send_offer(device->drag_data_source, |
| resource); |
| |
| wl_resource_post_event(resource, |
| WL_DATA_DEVICE_ENTER, |
| time, surface, x, y, offer); |
| |
| device->drag_focus = surface; |
| device->drag_focus_listener.func = destroy_drag_focus; |
| wl_list_insert(resource->destroy_listener_list.prev, |
| &device->drag_focus_listener.link); |
| device->drag_focus_resource = resource; |
| } |
| } |
| |
| static void |
| drag_grab_motion(struct wl_grab *grab, |
| uint32_t time, int32_t x, int32_t y) |
| { |
| struct wlsc_input_device *device = |
| container_of(grab, struct wlsc_input_device, grab); |
| struct wlsc_surface *es; |
| |
| es = pick_surface(&device->input_device, &x, &y); |
| drag_set_focus(device, &es->surface, time, x, y); |
| |
| if (es && device->drag_focus_resource) |
| wl_resource_post_event(device->drag_focus_resource, |
| WL_DATA_DEVICE_MOTION, time, x, y); |
| } |
| |
| static void |
| drag_grab_button(struct wl_grab *grab, |
| uint32_t time, int32_t button, int32_t state) |
| { |
| } |
| |
| static void |
| drag_grab_end(struct wl_grab *grab, uint32_t time) |
| { |
| struct wlsc_input_device *device = |
| container_of(grab, struct wlsc_input_device, grab); |
| |
| if (device->drag_focus_resource) |
| wl_resource_post_event(device->drag_focus_resource, |
| WL_DATA_DEVICE_DROP); |
| |
| drag_set_focus(device, NULL, time, 0, 0); |
| wlsc_data_source_unref(device->drag_data_source); |
| device->drag_data_source = NULL; |
| } |
| |
| static const struct wl_grab_interface drag_grab_interface = { |
| drag_grab_motion, |
| drag_grab_button, |
| drag_grab_end |
| }; |
| |
| static void |
| data_device_start_drag(struct wl_client *client, struct wl_resource *resource, |
| struct wl_resource *source_resource, |
| struct wl_resource *surface_resource, uint32_t time) |
| { |
| struct wlsc_input_device *device = resource->data; |
| struct wlsc_surface *surface = surface_resource->data; |
| struct wlsc_surface *target; |
| int32_t sx, sy; |
| |
| /* FIXME: Check that client has implicit grab on the surface |
| * that matches the given time. */ |
| |
| /* FIXME: Check that the data source type array isn't empty. */ |
| |
| if (wl_input_device_update_grab(&device->input_device, &device->grab, |
| &surface->surface, time) < 0) |
| return; |
| |
| device->grab.interface = &drag_grab_interface; |
| device->drag_data_source = source_resource->data; |
| device->drag_data_source->refcount++; |
| |
| target = pick_surface(&device->input_device, &sx, &sy); |
| wl_input_device_set_pointer_focus(&device->input_device, |
| NULL, time, 0, 0, 0, 0); |
| drag_set_focus(device, &target->surface, time, sx, sy); |
| } |
| |
| static void |
| data_device_attach(struct wl_client *client, struct wl_resource *resource, |
| uint32_t time, |
| struct wl_resource *buffer, int32_t x, int32_t y) |
| { |
| } |
| |
| static void |
| destroy_selection_data_source(struct wl_listener *listener, |
| struct wl_resource *resource, uint32_t time) |
| { |
| struct wlsc_input_device *device = |
| container_of(listener, struct wlsc_input_device, |
| selection_data_source_listener); |
| struct wl_resource *data_device, *focus; |
| |
| device->selection_data_source = NULL; |
| |
| focus = device->input_device.keyboard_focus_resource; |
| if (focus) { |
| data_device = find_resource(&device->drag_resource_list, |
| focus->client); |
| wl_resource_post_event(data_device, |
| WL_DATA_DEVICE_SELECTION, NULL); |
| } |
| } |
| |
| static void |
| data_device_set_selection(struct wl_client *client, |
| struct wl_resource *resource, |
| struct wl_resource *source_resource, uint32_t time) |
| { |
| struct wlsc_input_device *device = resource->data; |
| struct wl_resource *data_device, *focus, *offer; |
| |
| if (!source_resource) |
| return; |
| |
| if (device->selection_data_source) { |
| /* FIXME: All non-active clients will probably hold a |
| * reference to the selection data source, and thus it |
| * won't get destroyed until every client has been |
| * activated and seen the new selection event. */ |
| wl_list_remove(&device->selection_data_source_listener.link); |
| wlsc_data_source_unref(device->selection_data_source); |
| device->selection_data_source = NULL; |
| } |
| |
| device->selection_data_source = source_resource->data; |
| device->selection_data_source->refcount++; |
| |
| focus = device->input_device.keyboard_focus_resource; |
| if (focus) { |
| data_device = find_resource(&device->drag_resource_list, |
| focus->client); |
| offer = wlsc_data_source_send_offer(device->selection_data_source, |
| data_device); |
| wl_resource_post_event(data_device, |
| WL_DATA_DEVICE_SELECTION, offer); |
| } |
| |
| device->selection_data_source_listener.func = |
| destroy_selection_data_source; |
| wl_list_insert(source_resource->destroy_listener_list.prev, |
| &device->selection_data_source_listener.link); |
| } |
| |
| static const struct wl_data_device_interface data_device_interface = { |
| data_device_start_drag, |
| data_device_attach, |
| data_device_set_selection, |
| }; |
| |
| static void |
| destroy_data_source(struct wl_resource *resource) |
| { |
| struct wlsc_data_source *source = |
| container_of(resource, struct wlsc_data_source, resource); |
| char **p, **end; |
| |
| end = source->mime_types.data + source->mime_types.size; |
| for (p = source->mime_types.data; p < end; p++) |
| free(*p); |
| |
| wl_array_release(&source->mime_types); |
| |
| source->resource.object.id = 0; |
| wlsc_data_source_unref(source); |
| } |
| |
| static void |
| create_data_source(struct wl_client *client, |
| struct wl_resource *resource, uint32_t id) |
| { |
| struct wlsc_data_source *source; |
| |
| source = malloc(sizeof *source); |
| if (source == NULL) { |
| wl_resource_post_no_memory(resource); |
| return; |
| } |
| |
| source->resource.destroy = destroy_data_source; |
| source->resource.object.id = id; |
| source->resource.object.interface = &wl_data_source_interface; |
| source->resource.object.implementation = |
| (void (**)(void)) &data_source_interface; |
| source->resource.data = source; |
| source->refcount = 1; |
| |
| 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 *input_device) |
| { |
| struct wlsc_input_device *device = input_device->data; |
| struct wl_resource *resource; |
| |
| resource = |
| wl_client_add_object(client, &wl_data_device_interface, |
| &data_device_interface, id, device); |
| |
| wl_list_insert(&device->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 |
| wlsc_data_device_set_keyboard_focus(struct wlsc_input_device *device) |
| { |
| struct wl_resource *data_device, *focus, *offer; |
| struct wlsc_data_source *source; |
| |
| focus = device->input_device.keyboard_focus_resource; |
| if (!focus) |
| return; |
| |
| data_device = find_resource(&device->drag_resource_list, |
| focus->client); |
| if (!data_device) |
| return; |
| |
| source = device->selection_data_source; |
| if (source) { |
| offer = wlsc_data_source_send_offer(source, data_device); |
| wl_resource_post_event(data_device, |
| WL_DATA_DEVICE_SELECTION, offer); |
| } |
| } |
| |
| WL_EXPORT int |
| wlsc_data_device_manager_init(struct wlsc_compositor *compositor) |
| { |
| if (wl_display_add_global(compositor->wl_display, |
| &wl_data_device_manager_interface, |
| NULL, bind_manager) == NULL) |
| return -1; |
| |
| return 0; |
| } |