diff options
Diffstat (limited to 'src/data-device.c')
| -rw-r--r-- | src/data-device.c | 677 |
1 files changed, 677 insertions, 0 deletions
diff --git a/src/data-device.c b/src/data-device.c new file mode 100644 index 00000000..c3dc0bda --- /dev/null +++ b/src/data-device.c @@ -0,0 +1,677 @@ +/* + * 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 "config.h" + +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdio.h> + +#include "compositor.h" + +struct weston_drag { + struct wl_client *client; + struct weston_data_source *data_source; + struct wl_listener data_source_listener; + struct weston_surface *focus; + struct wl_resource *focus_resource; + struct wl_listener focus_listener; + struct weston_pointer_grab grab; + struct weston_surface *icon; + struct wl_listener icon_destroy_listener; + int32_t dx, dy; +}; + +static void +empty_region(pixman_region32_t *region) +{ + pixman_region32_fini(region); + pixman_region32_init(region); +} + +static void +data_offer_accept(struct wl_client *client, struct wl_resource *resource, + uint32_t serial, const char *mime_type) +{ + struct weston_data_offer *offer = wl_resource_get_user_data(resource); + + /* 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 weston_data_offer *offer = wl_resource_get_user_data(resource); + + 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 weston_data_offer *offer = wl_resource_get_user_data(resource); + + 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 weston_data_offer *offer; + + offer = container_of(listener, struct weston_data_offer, + source_destroy_listener); + + offer->source = NULL; +} + +static struct wl_resource * +weston_data_source_send_offer(struct weston_data_source *source, + struct wl_resource *target) +{ + struct weston_data_offer *offer; + char **p; + + offer = malloc(sizeof *offer); + if (offer == NULL) + return NULL; + + offer->resource = + wl_resource_create(wl_resource_get_client(target), + &wl_data_offer_interface, 1, 0); + if (offer->resource == NULL) { + free(offer); + return NULL; + } + + wl_resource_set_implementation(offer->resource, &data_offer_interface, + offer, destroy_data_offer); + + offer->source = source; + offer->source_destroy_listener.notify = destroy_offer_data_source; + wl_signal_add(&source->destroy_signal, + &offer->source_destroy_listener); + + 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 weston_data_source *source = + wl_resource_get_user_data(resource); + 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 void +drag_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height) +{ + struct weston_drag *drag = es->configure_private; + struct weston_pointer *pointer = drag->grab.pointer; + struct wl_list *list; + float fx, fy; + + if (!weston_surface_is_mapped(es) && es->buffer_ref.buffer) { + if (pointer->sprite && weston_surface_is_mapped(pointer->sprite)) + list = &pointer->sprite->layer_link; + else + list = &es->compositor->cursor_layer.surface_list; + + wl_list_insert(list, &es->layer_link); + weston_surface_update_transform(es); + empty_region(&es->pending.input); + } + + drag->dx += sx; + drag->dy += sy; + + fx = wl_fixed_to_double(pointer->x) + drag->dx; + fy = wl_fixed_to_double(pointer->y) + drag->dy; + weston_surface_configure(es, fx, fy, width, height); +} + +static void +destroy_drag_focus(struct wl_listener *listener, void *data) +{ + struct weston_drag *drag = + container_of(listener, struct weston_drag, focus_listener); + + drag->focus_resource = NULL; +} + +static void +weston_drag_set_focus(struct weston_drag *drag, struct weston_surface *surface, + wl_fixed_t sx, wl_fixed_t sy) +{ + struct weston_pointer *pointer = drag->grab.pointer; + struct wl_resource *resource, *offer = NULL; + struct wl_display *display = pointer->seat->compositor->wl_display; + uint32_t serial; + + if (drag->focus_resource) { + wl_data_device_send_leave(drag->focus_resource); + wl_list_remove(&drag->focus_listener.link); + drag->focus_resource = NULL; + drag->focus = NULL; + } + + if (!surface) + return; + + if (!drag->data_source && + wl_resource_get_client(surface->resource) != drag->client) + return; + + resource = wl_resource_find_for_client(&pointer->seat->drag_resource_list, + wl_resource_get_client(surface->resource)); + if (!resource) + return; + + serial = wl_display_next_serial(display); + + if (drag->data_source) { + offer = weston_data_source_send_offer(drag->data_source, + resource); + if (offer == NULL) + return; + } + + wl_data_device_send_enter(resource, serial, surface->resource, + sx, sy, offer); + + drag->focus = surface; + drag->focus_listener.notify = destroy_drag_focus; + wl_resource_add_destroy_listener(resource, &drag->focus_listener); + drag->focus_resource = resource; +} + +static void +drag_grab_focus(struct weston_pointer_grab *grab) +{ + struct weston_drag *drag = + container_of(grab, struct weston_drag, grab); + struct weston_pointer *pointer = grab->pointer; + struct weston_surface *surface; + wl_fixed_t sx, sy; + + surface = weston_compositor_pick_surface(pointer->seat->compositor, + pointer->x, pointer->y, + &sx, &sy); + if (drag->focus != surface) + weston_drag_set_focus(drag, surface, sx, sy); +} + +static void +drag_grab_motion(struct weston_pointer_grab *grab, uint32_t time) +{ + struct weston_drag *drag = + container_of(grab, struct weston_drag, grab); + struct weston_pointer *pointer = drag->grab.pointer; + float fx, fy; + wl_fixed_t sx, sy; + + if (drag->icon) { + fx = wl_fixed_to_double(pointer->x) + drag->dx; + fy = wl_fixed_to_double(pointer->y) + drag->dy; + weston_surface_set_position(drag->icon, fx, fy); + weston_surface_schedule_repaint(drag->icon); + } + + if (drag->focus_resource) { + weston_surface_from_global_fixed(drag->focus, + pointer->x, pointer->y, + &sx, &sy); + + wl_data_device_send_motion(drag->focus_resource, time, sx, sy); + } +} + +static void +data_device_end_drag_grab(struct weston_drag *drag) +{ + if (drag->icon) { + if (weston_surface_is_mapped(drag->icon)) + weston_surface_unmap(drag->icon); + + drag->icon->configure = NULL; + empty_region(&drag->icon->pending.input); + wl_list_remove(&drag->icon_destroy_listener.link); + } + + weston_drag_set_focus(drag, NULL, 0, 0); + + weston_pointer_end_grab(drag->grab.pointer); + + free(drag); +} + +static void +drag_grab_button(struct weston_pointer_grab *grab, + uint32_t time, uint32_t button, uint32_t state_w) +{ + struct weston_drag *drag = + container_of(grab, struct weston_drag, grab); + struct weston_pointer *pointer = drag->grab.pointer; + enum wl_pointer_button_state state = state_w; + + if (drag->focus_resource && + pointer->grab_button == button && + state == WL_POINTER_BUTTON_STATE_RELEASED) + wl_data_device_send_drop(drag->focus_resource); + + if (pointer->button_count == 0 && + state == WL_POINTER_BUTTON_STATE_RELEASED) { + if (drag->data_source) + wl_list_remove(&drag->data_source_listener.link); + data_device_end_drag_grab(drag); + } +} + +static void +drag_grab_cancel(struct weston_pointer_grab *grab) +{ + struct weston_drag *drag = + container_of(grab, struct weston_drag, grab); + + if (drag->data_source) + wl_list_remove(&drag->data_source_listener.link); + + data_device_end_drag_grab(drag); +} + +static const struct weston_pointer_grab_interface drag_grab_interface = { + drag_grab_focus, + drag_grab_motion, + drag_grab_button, + drag_grab_cancel, +}; + +static void +destroy_data_device_source(struct wl_listener *listener, void *data) +{ + struct weston_drag *drag = container_of(listener, struct weston_drag, + data_source_listener); + + data_device_end_drag_grab(drag); +} + +static void +handle_drag_icon_destroy(struct wl_listener *listener, void *data) +{ + struct weston_drag *drag = container_of(listener, struct weston_drag, + icon_destroy_listener); + + drag->icon = NULL; +} + +WL_EXPORT int +weston_seat_start_drag(struct weston_seat *seat, + struct weston_data_source *source, + struct weston_surface *icon, + struct wl_client *client) +{ + struct weston_drag *drag; + + drag = zalloc(sizeof *drag); + if (drag == NULL) + return -1; + + drag->grab.interface = &drag_grab_interface; + drag->client = client; + drag->data_source = source; + drag->icon = icon; + + if (source) { + drag->data_source_listener.notify = destroy_data_device_source; + wl_signal_add(&source->destroy_signal, + &drag->data_source_listener); + } + + if (icon) { + drag->icon_destroy_listener.notify = handle_drag_icon_destroy; + wl_signal_add(&icon->destroy_signal, + &drag->icon_destroy_listener); + + icon->configure = drag_surface_configure; + icon->configure_private = drag; + } + + weston_pointer_set_focus(seat->pointer, NULL, + wl_fixed_from_int(0), wl_fixed_from_int(0)); + weston_pointer_start_grab(seat->pointer, &drag->grab); + + return 0; +} + +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 weston_seat *seat = wl_resource_get_user_data(resource); + struct weston_data_source *source = NULL; + struct weston_surface *icon = NULL; + + if (seat->pointer->button_count == 0 || + seat->pointer->grab_serial != serial || + seat->pointer->focus != wl_resource_get_user_data(origin_resource)) + return; + + /* FIXME: Check that the data source type array isn't empty. */ + + if (source_resource) + source = wl_resource_get_user_data(source_resource); + if (icon_resource) + icon = wl_resource_get_user_data(icon_resource); + if (icon && icon->configure) { + wl_resource_post_error(icon_resource, + WL_DISPLAY_ERROR_INVALID_OBJECT, + "surface->configure already set"); + return; + } + + if (weston_seat_start_drag(seat, source, icon, client) < 0) + wl_resource_post_no_memory(resource); +} + +static void +destroy_selection_data_source(struct wl_listener *listener, void *data) +{ + struct weston_seat *seat = container_of(listener, struct weston_seat, + selection_data_source_listener); + struct wl_resource *data_device; + struct weston_surface *focus = NULL; + + seat->selection_data_source = NULL; + + if (seat->keyboard) + focus = seat->keyboard->focus; + if (focus && focus->resource) { + data_device = wl_resource_find_for_client(&seat->drag_resource_list, + wl_resource_get_client(focus->resource)); + if (data_device) + wl_data_device_send_selection(data_device, NULL); + } + + wl_signal_emit(&seat->selection_signal, seat); +} + +WL_EXPORT void +weston_seat_set_selection(struct weston_seat *seat, + struct weston_data_source *source, uint32_t serial) +{ + struct wl_resource *data_device, *offer; + struct weston_surface *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; + if (focus && focus->resource) { + data_device = wl_resource_find_for_client(&seat->drag_resource_list, + wl_resource_get_client(focus->resource)); + if (data_device && source) { + offer = weston_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->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. */ + weston_seat_set_selection(wl_resource_get_user_data(resource), + wl_resource_get_user_data(source_resource), + 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 weston_data_source *source = + wl_resource_get_user_data(resource); + char **p; + + wl_signal_emit(&source->destroy_signal, source); + + wl_array_for_each(p, &source->mime_types) + free(*p); + + wl_array_release(&source->mime_types); + + free(source); +} + +static void +client_source_accept(struct weston_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 weston_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 weston_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 weston_data_source *source; + + source = malloc(sizeof *source); + if (source == NULL) { + wl_resource_post_no_memory(resource); + return; + } + + wl_signal_init(&source->destroy_signal); + source->accept = client_source_accept; + source->send = client_source_send; + source->cancel = client_source_cancel; + + wl_array_init(&source->mime_types); + + source->resource = + wl_resource_create(client, &wl_data_source_interface, 1, id); + wl_resource_set_implementation(source->resource, &data_source_interface, + source, destroy_data_source); +} + +static void unbind_data_device(struct wl_resource *resource) +{ + wl_list_remove(wl_resource_get_link(resource)); +} + +static void +get_data_device(struct wl_client *client, + struct wl_resource *manager_resource, + uint32_t id, struct wl_resource *seat_resource) +{ + struct weston_seat *seat = wl_resource_get_user_data(seat_resource); + struct wl_resource *resource; + + resource = wl_resource_create(client, + &wl_data_device_interface, 1, id); + if (resource == NULL) { + wl_resource_post_no_memory(manager_resource); + return; + } + + wl_list_insert(&seat->drag_resource_list, + wl_resource_get_link(resource)); + wl_resource_set_implementation(resource, &data_device_interface, + seat, 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) +{ + struct wl_resource *resource; + + resource = + wl_resource_create(client, + &wl_data_device_manager_interface, 1, id); + if (resource == NULL) { + wl_client_post_no_memory(client); + return; + } + + wl_resource_set_implementation(resource, &manager_interface, + NULL, NULL); +} + +WL_EXPORT void +wl_data_device_set_keyboard_focus(struct weston_seat *seat) +{ + struct wl_resource *data_device, *offer; + struct weston_data_source *source; + struct weston_surface *focus; + + if (!seat->keyboard) + return; + + focus = seat->keyboard->focus; + if (!focus || !focus->resource) + return; + + data_device = wl_resource_find_for_client(&seat->drag_resource_list, + wl_resource_get_client(focus->resource)); + if (!data_device) + return; + + source = seat->selection_data_source; + if (source) { + offer = weston_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_global_create(display, + &wl_data_device_manager_interface, 1, + NULL, bind_manager) == NULL) + return -1; + + return 0; +} |