mirror of
https://gitlab.freedesktop.org/wayland/weston.git
synced 2025-12-28 05:10:12 +01:00
82d9ee929b
We have to deal with the data source going away. Even if we have a reference to the server side data source, we can't do anything if the client that provided the source went away. So just NULL the offers source pointer in the destroy callback for the source.
475 lines
13 KiB
C
475 lines
13 KiB
C
/*
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* Copyright © 2011 Kristian Høgsberg
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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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 <stdio.h>
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#include "compositor.h"
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static void
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data_offer_accept(struct wl_client *client, struct wl_resource *resource,
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uint32_t time, const char *mime_type)
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{
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struct weston_data_offer *offer = resource->data;
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/* FIXME: Check that client is currently focused by the input
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* device that is currently dragging this data source. Should
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* this be a wl_data_device request? */
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if (offer->source)
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wl_resource_post_event(&offer->source->resource,
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WL_DATA_SOURCE_TARGET, mime_type);
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}
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static void
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data_offer_receive(struct wl_client *client, struct wl_resource *resource,
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const char *mime_type, int32_t fd)
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{
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struct weston_data_offer *offer = resource->data;
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if (offer->source)
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wl_resource_post_event(&offer->source->resource,
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WL_DATA_SOURCE_SEND, mime_type, fd);
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close(fd);
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}
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static void
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data_offer_destroy(struct wl_client *client, struct wl_resource *resource)
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{
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wl_resource_destroy(resource, weston_compositor_get_time());
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}
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static void
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destroy_data_offer(struct wl_resource *resource)
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{
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struct weston_data_offer *offer = resource->data;
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wl_list_remove(&offer->source_destroy_listener.link);
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free(offer);
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}
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static const struct wl_data_offer_interface data_offer_interface = {
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data_offer_accept,
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data_offer_receive,
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data_offer_destroy,
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};
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static void
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destroy_offer_data_source(struct wl_listener *listener,
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struct wl_resource *resource, uint32_t time)
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{
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struct weston_data_offer *offer = resource->data;
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offer->source = NULL;
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}
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static void
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data_source_cancel(struct weston_data_source *source)
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{
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wl_resource_post_event(&source->resource, WL_DATA_SOURCE_CANCELLED);
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}
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static struct wl_resource *
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weston_data_source_send_offer(struct weston_data_source *source,
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struct wl_resource *target)
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{
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struct weston_data_offer *offer;
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char **p, **end;
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offer = malloc(sizeof *offer);
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if (offer == NULL)
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return NULL;
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offer->resource.destroy = destroy_data_offer;
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offer->resource.object.id = 0;
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offer->resource.object.interface = &wl_data_offer_interface;
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offer->resource.object.implementation =
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(void (**)(void)) &source->offer_interface;
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offer->resource.data = offer;
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offer->source = source;
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offer->source_destroy_listener.func = destroy_offer_data_source;
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wl_list_insert(&source->resource.destroy_listener_list,
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&offer->source_destroy_listener.link);
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wl_client_add_resource(source->resource.client, &offer->resource);
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wl_resource_post_event(target,
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WL_DATA_DEVICE_DATA_OFFER, &offer->resource);
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end = source->mime_types.data + source->mime_types.size;
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for (p = source->mime_types.data; p < end; p++)
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wl_resource_post_event(&offer->resource,
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WL_DATA_OFFER_OFFER, *p);
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return &offer->resource;
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}
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static void
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data_source_offer(struct wl_client *client,
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struct wl_resource *resource,
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const char *type)
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{
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struct weston_data_source *source = resource->data;
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char **p;
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p = wl_array_add(&source->mime_types, sizeof *p);
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if (p)
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*p = strdup(type);
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if (!p || !*p)
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wl_resource_post_no_memory(resource);
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}
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static void
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data_source_destroy(struct wl_client *client, struct wl_resource *resource)
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{
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wl_resource_destroy(resource, weston_compositor_get_time());
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}
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static struct wl_data_source_interface data_source_interface = {
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data_source_offer,
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data_source_destroy
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};
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static struct wl_resource *
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find_resource(struct wl_list *list, struct wl_client *client)
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{
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struct wl_resource *r;
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wl_list_for_each(r, list, link) {
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if (r->client == client)
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return r;
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}
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return NULL;
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}
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static void
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destroy_drag_focus(struct wl_listener *listener,
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struct wl_resource *resource, uint32_t time)
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{
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struct weston_input_device *device =
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container_of(listener, struct weston_input_device,
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drag_focus_listener);
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device->drag_focus_resource = NULL;
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}
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static void
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drag_set_focus(struct weston_input_device *device,
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struct wl_surface *surface, uint32_t time,
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int32_t x, int32_t y)
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{
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struct wl_resource *resource, *offer;
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if (device->drag_focus == surface)
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return;
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if (device->drag_focus_resource) {
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wl_resource_post_event(device->drag_focus_resource,
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WL_DATA_DEVICE_LEAVE);
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wl_list_remove(&device->drag_focus_listener.link);
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device->drag_focus_resource = NULL;
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device->drag_focus = NULL;
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}
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if (surface)
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resource = find_resource(&device->drag_resource_list,
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surface->resource.client);
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if (surface && resource) {
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offer = weston_data_source_send_offer(device->drag_data_source,
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resource);
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wl_resource_post_event(resource,
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WL_DATA_DEVICE_ENTER,
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time, surface, x, y, offer);
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device->drag_focus = surface;
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device->drag_focus_listener.func = destroy_drag_focus;
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wl_list_insert(resource->destroy_listener_list.prev,
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&device->drag_focus_listener.link);
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device->drag_focus_resource = resource;
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}
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}
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static void
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drag_grab_motion(struct wl_grab *grab,
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uint32_t time, int32_t x, int32_t y)
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{
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struct weston_input_device *device =
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container_of(grab, struct weston_input_device, grab);
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struct weston_surface *es;
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es = pick_surface(&device->input_device, &x, &y);
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drag_set_focus(device, &es->surface, time, x, y);
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if (es && device->drag_focus_resource)
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wl_resource_post_event(device->drag_focus_resource,
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WL_DATA_DEVICE_MOTION, time, x, y);
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}
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static void
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drag_grab_button(struct wl_grab *grab,
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uint32_t time, int32_t button, int32_t state)
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{
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}
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static void
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drag_grab_end(struct wl_grab *grab, uint32_t time)
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{
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struct weston_input_device *device =
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container_of(grab, struct weston_input_device, grab);
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if (device->drag_focus_resource)
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wl_resource_post_event(device->drag_focus_resource,
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WL_DATA_DEVICE_DROP);
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drag_set_focus(device, NULL, time, 0, 0);
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device->drag_data_source = NULL;
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}
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static const struct wl_grab_interface drag_grab_interface = {
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drag_grab_motion,
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drag_grab_button,
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drag_grab_end
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};
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static void
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data_device_start_drag(struct wl_client *client, struct wl_resource *resource,
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struct wl_resource *source_resource,
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struct wl_resource *surface_resource, uint32_t time)
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{
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struct weston_input_device *device = resource->data;
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struct weston_surface *surface = surface_resource->data;
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struct weston_surface *target;
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int32_t sx, sy;
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/* FIXME: Check that client has implicit grab on the surface
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* that matches the given time. */
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/* FIXME: Check that the data source type array isn't empty. */
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if (wl_input_device_update_grab(&device->input_device, &device->grab,
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&surface->surface, time) < 0)
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return;
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device->grab.interface = &drag_grab_interface;
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device->drag_data_source = source_resource->data;
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target = pick_surface(&device->input_device, &sx, &sy);
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wl_input_device_set_pointer_focus(&device->input_device,
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NULL, time, 0, 0, 0, 0);
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drag_set_focus(device, &target->surface, time, sx, sy);
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}
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static void
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data_device_attach(struct wl_client *client, struct wl_resource *resource,
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uint32_t time,
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struct wl_resource *buffer, int32_t x, int32_t y)
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{
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}
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static void
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destroy_selection_data_source(struct wl_listener *listener,
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struct wl_resource *resource, uint32_t time)
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{
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struct weston_input_device *device =
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container_of(listener, struct weston_input_device,
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selection_data_source_listener);
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struct wl_resource *data_device, *focus;
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device->selection_data_source = NULL;
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focus = device->input_device.keyboard_focus_resource;
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if (focus) {
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data_device = find_resource(&device->drag_resource_list,
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focus->client);
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wl_resource_post_event(data_device,
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WL_DATA_DEVICE_SELECTION, NULL);
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}
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}
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void
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weston_input_device_set_selection(struct weston_input_device *device,
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struct weston_data_source *source, uint32_t time)
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{
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struct wl_resource *data_device, *focus, *offer;
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if (device->selection_data_source) {
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device->selection_data_source->cancel(device->selection_data_source);
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wl_list_remove(&device->selection_data_source_listener.link);
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device->selection_data_source = NULL;
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}
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device->selection_data_source = source;
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focus = device->input_device.keyboard_focus_resource;
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if (focus) {
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data_device = find_resource(&device->drag_resource_list,
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focus->client);
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if (data_device) {
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offer = weston_data_source_send_offer(device->selection_data_source,
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data_device);
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wl_resource_post_event(data_device,
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WL_DATA_DEVICE_SELECTION,
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offer);
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}
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}
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weston_xserver_set_selection(device);
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device->selection_data_source_listener.func =
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destroy_selection_data_source;
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wl_list_insert(source->resource.destroy_listener_list.prev,
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&device->selection_data_source_listener.link);
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}
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static void
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data_device_set_selection(struct wl_client *client,
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struct wl_resource *resource,
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struct wl_resource *source_resource, uint32_t time)
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{
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if (!source_resource)
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return;
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weston_input_device_set_selection(resource->data,
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source_resource->data, time);
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}
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static const struct wl_data_device_interface data_device_interface = {
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data_device_start_drag,
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data_device_attach,
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data_device_set_selection,
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};
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static void
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destroy_data_source(struct wl_resource *resource)
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{
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struct weston_data_source *source =
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container_of(resource, struct weston_data_source, resource);
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char **p, **end;
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end = source->mime_types.data + source->mime_types.size;
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for (p = source->mime_types.data; p < end; p++)
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free(*p);
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wl_array_release(&source->mime_types);
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source->resource.object.id = 0;
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}
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static void
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create_data_source(struct wl_client *client,
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struct wl_resource *resource, uint32_t id)
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{
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struct weston_data_source *source;
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source = malloc(sizeof *source);
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if (source == NULL) {
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wl_resource_post_no_memory(resource);
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return;
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}
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source->resource.destroy = destroy_data_source;
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source->resource.object.id = id;
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source->resource.object.interface = &wl_data_source_interface;
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source->resource.object.implementation =
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(void (**)(void)) &data_source_interface;
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source->resource.data = source;
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source->offer_interface = &data_offer_interface;
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source->cancel = data_source_cancel;
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wl_array_init(&source->mime_types);
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wl_client_add_resource(client, &source->resource);
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}
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static void unbind_data_device(struct wl_resource *resource)
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{
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wl_list_remove(&resource->link);
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free(resource);
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}
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static void
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get_data_device(struct wl_client *client,
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struct wl_resource *manager_resource,
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uint32_t id, struct wl_resource *input_device)
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{
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struct weston_input_device *device = input_device->data;
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struct wl_resource *resource;
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resource =
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wl_client_add_object(client, &wl_data_device_interface,
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&data_device_interface, id, device);
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wl_list_insert(&device->drag_resource_list, &resource->link);
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resource->destroy = unbind_data_device;
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}
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static const struct wl_data_device_manager_interface manager_interface = {
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create_data_source,
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get_data_device
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};
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static void
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bind_manager(struct wl_client *client,
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void *data, uint32_t version, uint32_t id)
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{
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wl_client_add_object(client, &wl_data_device_manager_interface,
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&manager_interface, id, NULL);
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}
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WL_EXPORT void
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weston_data_device_set_keyboard_focus(struct weston_input_device *device)
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{
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struct wl_resource *data_device, *focus, *offer;
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struct weston_data_source *source;
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focus = device->input_device.keyboard_focus_resource;
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if (!focus)
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return;
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data_device = find_resource(&device->drag_resource_list,
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focus->client);
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if (!data_device)
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return;
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source = device->selection_data_source;
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if (source) {
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offer = weston_data_source_send_offer(source, data_device);
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wl_resource_post_event(data_device,
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WL_DATA_DEVICE_SELECTION, offer);
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}
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}
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WL_EXPORT int
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weston_data_device_manager_init(struct weston_compositor *compositor)
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{
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if (wl_display_add_global(compositor->wl_display,
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&wl_data_device_manager_interface,
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NULL, bind_manager) == NULL)
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return -1;
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return 0;
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}
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