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459 lines
12 KiB
459 lines
12 KiB
/*
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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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struct wlsc_data_source {
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struct wl_resource resource;
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struct wl_array mime_types;
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int refcount;
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};
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static void
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wlsc_data_source_unref(struct wlsc_data_source *source)
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{
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source->refcount--;
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if (source->refcount == 1 && source->resource.object.id != 0) {
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wl_resource_post_event(&source->resource,
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WL_DATA_SOURCE_CANCELLED);
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} else if (source->refcount == 0) {
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free(source);
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}
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}
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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 wlsc_data_source *source = 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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wl_resource_post_event(&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 wlsc_data_source *source = resource->data;
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wl_resource_post_event(&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, wlsc_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 wlsc_data_source *source = resource->data;
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wlsc_data_source_unref(source);
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free(resource);
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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 struct wl_resource *
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wlsc_data_source_send_offer(struct wlsc_data_source *source,
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struct wl_resource *target)
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{
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struct wl_resource *resource;
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char **p, **end;
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resource = wl_client_new_object(target->client,
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&wl_data_offer_interface,
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&data_offer_interface, source);
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resource->destroy = destroy_data_offer;
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source->refcount++;
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wl_resource_post_event(target, WL_DATA_DEVICE_DATA_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(resource, WL_DATA_OFFER_OFFER, *p);
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return 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 wlsc_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, wlsc_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 wlsc_input_device *device =
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container_of(listener, struct wlsc_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 wlsc_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 = wlsc_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 wlsc_input_device *device =
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container_of(grab, struct wlsc_input_device, grab);
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struct wlsc_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 wlsc_input_device *device =
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container_of(grab, struct wlsc_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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wlsc_data_source_unref(device->drag_data_source);
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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 wlsc_input_device *device = resource->data;
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struct wlsc_surface *surface = surface_resource->data;
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struct wlsc_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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device->drag_data_source->refcount++;
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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 wlsc_input_device *device =
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container_of(listener, struct wlsc_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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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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struct wlsc_input_device *device = resource->data;
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struct wl_resource *data_device, *focus, *offer;
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if (!source_resource)
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return;
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if (device->selection_data_source) {
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/* FIXME: All non-active clients will probably hold a
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* reference to the selection data source, and thus it
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* won't get destroyed until every client has been
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* activated and seen the new selection event. */
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wl_list_remove(&device->selection_data_source_listener.link);
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wlsc_data_source_unref(device->selection_data_source);
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device->selection_data_source = NULL;
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}
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device->selection_data_source = source_resource->data;
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device->selection_data_source->refcount++;
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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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offer = wlsc_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, offer);
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}
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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 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 wlsc_data_source *source =
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container_of(resource, struct wlsc_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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wlsc_data_source_unref(source);
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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 wlsc_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->refcount = 1;
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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 wlsc_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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wlsc_data_device_set_keyboard_focus(struct wlsc_input_device *device)
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{
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struct wl_resource *data_device, *focus, *offer;
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struct wlsc_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 = wlsc_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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wlsc_data_device_manager_init(struct wlsc_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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