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mutter-performance-source/src/wayland/meta-wayland-data-device.c
Carlos Garnacho 4ed05830e2 wayland: Close pipe file descriptors after use 
Both ends were being leaked here, one directly, other through the
GIOChannel.

Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4302
(just maybe)

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1870>
2021-05-25 16:31:07 +00:00

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/*
* 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.
*/
/* The file is based on src/data-device.c from Weston */
#include "config.h"
#include "wayland/meta-wayland-data-device.h"
#include <gio/gunixoutputstream.h>
#include <glib-unix.h>
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "compositor/meta-dnd-actor-private.h"
#include "meta/meta-selection-source-memory.h"
#include "wayland/meta-selection-source-wayland-private.h"
#include "wayland/meta-wayland-dnd-surface.h"
#include "wayland/meta-wayland-pointer.h"
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-wayland-seat.h"
#define ROOTWINDOW_DROP_MIME "application/x-rootwindow-drop"
static void unset_selection_source (MetaWaylandDataDevice *data_device,
MetaSelectionType selection_type);
static void
drag_grab_data_source_destroyed (gpointer data, GObject *where_the_object_was);
static struct wl_resource * create_and_send_clipboard_offer (MetaWaylandDataDevice *data_device,
struct wl_resource *target);
static void
move_resources (struct wl_list *destination,
struct wl_list *source)
{
wl_list_insert_list (destination, source);
wl_list_init (source);
}
static void
move_resources_for_client (struct wl_list *destination,
struct wl_list *source,
struct wl_client *client)
{
struct wl_resource *resource, *tmp;
wl_resource_for_each_safe (resource, tmp, source)
{
if (wl_resource_get_client (resource) == client)
{
wl_list_remove (wl_resource_get_link (resource));
wl_list_insert (destination, wl_resource_get_link (resource));
}
}
}
static void
unbind_resource (struct wl_resource *resource)
{
wl_list_remove (wl_resource_get_link (resource));
}
static void
default_destructor (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static struct wl_resource *
create_and_send_dnd_offer (MetaWaylandDataSource *source,
struct wl_resource *target)
{
MetaWaylandDataOffer *offer;
struct wl_array *mime_types;
struct wl_resource *resource;
char **p;
offer = meta_wayland_data_offer_new (META_SELECTION_DND, source, target);
resource = meta_wayland_data_offer_get_resource (offer);
wl_data_device_send_data_offer (target, resource);
mime_types = meta_wayland_data_source_get_mime_types (source);
wl_array_for_each (p, mime_types)
wl_data_offer_send_offer (resource, *p);
meta_wayland_data_offer_update_action (offer);
meta_wayland_data_source_set_current_offer (source, offer);
return resource;
}
struct _MetaWaylandDragGrab {
MetaWaylandPointerGrab generic;
MetaWaylandKeyboardGrab keyboard_grab;
MetaWaylandSeat *seat;
struct wl_client *drag_client;
MetaWaylandSurface *drag_focus;
gulong drag_focus_destroy_handler_id;
struct wl_resource *drag_focus_data_device;
struct wl_listener drag_focus_listener;
MetaWaylandSurface *drag_surface;
struct wl_listener drag_icon_listener;
MetaWaylandDataSource *drag_data_source;
ClutterActor *feedback_actor;
MetaWaylandSurface *drag_origin;
struct wl_listener drag_origin_listener;
int drag_start_x, drag_start_y;
ClutterModifierType buttons;
guint need_initial_focus : 1;
};
static void
set_selection_source (MetaWaylandDataDevice *data_device,
MetaSelectionType selection_type,
MetaSelectionSource *selection_source)
{
MetaDisplay *display = meta_get_display ();
meta_selection_set_owner (meta_display_get_selection (display),
selection_type, selection_source);
g_set_object (&data_device->owners[selection_type], selection_source);
}
static void
unset_selection_source (MetaWaylandDataDevice *data_device,
MetaSelectionType selection_type)
{
MetaDisplay *display = meta_get_display ();
if (!data_device->owners[selection_type])
return;
meta_selection_unset_owner (meta_display_get_selection (display),
selection_type,
data_device->owners[selection_type]);
g_clear_object (&data_device->owners[selection_type]);
}
static void
destroy_drag_focus (struct wl_listener *listener, void *data)
{
MetaWaylandDragGrab *grab = wl_container_of (listener, grab, drag_focus_listener);
grab->drag_focus_data_device = NULL;
g_clear_signal_handler (&grab->drag_focus_destroy_handler_id,
grab->drag_focus);
grab->drag_focus = NULL;
}
static void
on_drag_focus_destroyed (MetaWaylandSurface *surface,
MetaWaylandDragGrab *grab)
{
meta_wayland_surface_drag_dest_focus_out (grab->drag_focus);
grab->drag_focus = NULL;
}
static void
meta_wayland_drag_grab_set_source (MetaWaylandDragGrab *drag_grab,
MetaWaylandDataSource *source)
{
if (drag_grab->drag_data_source)
g_object_weak_unref (G_OBJECT (drag_grab->drag_data_source),
drag_grab_data_source_destroyed,
drag_grab);
drag_grab->drag_data_source = source;
if (source)
g_object_weak_ref (G_OBJECT (source),
drag_grab_data_source_destroyed,
drag_grab);
}
static void
meta_wayland_drag_source_fake_acceptance (MetaWaylandDataSource *source,
const gchar *mimetype)
{
uint32_t actions, user_action, action = 0;
meta_wayland_data_source_get_actions (source, &actions);
user_action = meta_wayland_data_source_get_user_action (source);
/* Pick a suitable action */
if ((user_action & actions) != 0)
action = user_action;
else if (actions != 0)
action = 1 << (ffs (actions) - 1);
/* Bail out if there is none, source didn't cooperate */
if (action == 0)
return;
meta_wayland_data_source_target (source, mimetype);
meta_wayland_data_source_set_current_action (source, action);
meta_wayland_data_source_set_has_target (source, TRUE);
}
void
meta_wayland_drag_grab_set_focus (MetaWaylandDragGrab *drag_grab,
MetaWaylandSurface *surface)
{
MetaWaylandSeat *seat = drag_grab->seat;
MetaWaylandDataSource *source = drag_grab->drag_data_source;
struct wl_client *client;
struct wl_resource *data_device_resource, *offer = NULL;
if (!drag_grab->need_initial_focus &&
drag_grab->drag_focus == surface)
return;
drag_grab->need_initial_focus = FALSE;
if (drag_grab->drag_focus)
{
meta_wayland_surface_drag_dest_focus_out (drag_grab->drag_focus);
g_clear_signal_handler (&drag_grab->drag_focus_destroy_handler_id,
drag_grab->drag_focus);
drag_grab->drag_focus = NULL;
}
if (source)
meta_wayland_data_source_set_current_offer (source, NULL);
if (!surface && source &&
meta_wayland_data_source_has_mime_type (source, ROOTWINDOW_DROP_MIME))
meta_wayland_drag_source_fake_acceptance (source, ROOTWINDOW_DROP_MIME);
else if (source)
meta_wayland_data_source_target (source, NULL);
if (!surface)
return;
if (!source &&
wl_resource_get_client (surface->resource) != drag_grab->drag_client)
return;
client = wl_resource_get_client (surface->resource);
data_device_resource = wl_resource_find_for_client (&seat->data_device.resource_list, client);
if (!data_device_resource)
{
data_device_resource =
wl_resource_find_for_client (&seat->data_device.focus_resource_list,
client);
}
if (source && data_device_resource)
offer = create_and_send_dnd_offer (source, data_device_resource);
drag_grab->drag_focus = surface;
drag_grab->drag_focus_destroy_handler_id =
g_signal_connect (surface, "destroy",
G_CALLBACK (on_drag_focus_destroyed),
drag_grab);
drag_grab->drag_focus_data_device = data_device_resource;
meta_wayland_surface_drag_dest_focus_in (drag_grab->drag_focus,
offer ? wl_resource_get_user_data (offer) : NULL);
}
MetaWaylandSurface *
meta_wayland_drag_grab_get_focus (MetaWaylandDragGrab *drag_grab)
{
return drag_grab->drag_focus;
}
void
meta_wayland_drag_grab_update_feedback_actor (MetaWaylandDragGrab *drag_grab,
ClutterEvent *event)
{
meta_feedback_actor_update (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
event);
}
static void
drag_grab_focus (MetaWaylandPointerGrab *grab,
MetaWaylandSurface *surface)
{
MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
meta_wayland_drag_grab_set_focus (drag_grab, surface);
}
static void
data_source_update_user_dnd_action (MetaWaylandDataSource *source,
ClutterModifierType modifiers)
{
enum wl_data_device_manager_dnd_action user_dnd_action = 0;
if (modifiers & CLUTTER_SHIFT_MASK)
user_dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE;
else if (modifiers & CLUTTER_CONTROL_MASK)
user_dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
else if (modifiers & (CLUTTER_MOD1_MASK | CLUTTER_BUTTON2_MASK))
user_dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK;
meta_wayland_data_source_set_user_action (source, user_dnd_action);
}
static void
drag_grab_motion (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
if (drag_grab->drag_focus)
meta_wayland_surface_drag_dest_motion (drag_grab->drag_focus, event);
if (drag_grab->drag_surface)
meta_feedback_actor_update (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
event);
}
static void
data_device_end_drag_grab (MetaWaylandDragGrab *drag_grab)
{
meta_wayland_drag_grab_set_source (drag_grab, NULL);
meta_wayland_drag_grab_set_focus (drag_grab, NULL);
if (drag_grab->drag_origin)
{
drag_grab->drag_origin = NULL;
wl_list_remove (&drag_grab->drag_origin_listener.link);
}
if (drag_grab->drag_surface)
{
drag_grab->drag_surface = NULL;
wl_list_remove (&drag_grab->drag_icon_listener.link);
}
if (drag_grab->feedback_actor)
{
clutter_actor_remove_all_children (drag_grab->feedback_actor);
clutter_actor_destroy (drag_grab->feedback_actor);
}
drag_grab->seat->data_device.current_grab = NULL;
/* There might be other grabs created in result to DnD actions like popups
* on "ask" actions, we must not reset those, only our own.
*/
if (drag_grab->generic.pointer->grab == (MetaWaylandPointerGrab *) drag_grab)
{
meta_wayland_pointer_end_grab (drag_grab->generic.pointer);
meta_wayland_keyboard_end_grab (drag_grab->keyboard_grab.keyboard);
meta_display_sync_wayland_input_focus (meta_get_display ());
}
g_free (drag_grab);
}
static gboolean
on_fake_read_hup (GIOChannel *channel,
GIOCondition condition,
gpointer data)
{
MetaWaylandDataSource *source = data;
meta_wayland_data_source_notify_finish (source);
g_io_channel_shutdown (channel, FALSE, NULL);
g_io_channel_unref (channel);
return G_SOURCE_REMOVE;
}
static void
meta_wayland_data_source_fake_read (MetaWaylandDataSource *source,
const gchar *mimetype)
{
GIOChannel *channel;
int p[2];
if (!g_unix_open_pipe (p, FD_CLOEXEC, NULL))
{
meta_wayland_data_source_notify_finish (source);
return;
}
if (!g_unix_set_fd_nonblocking (p[0], TRUE, NULL) ||
!g_unix_set_fd_nonblocking (p[1], TRUE, NULL))
{
meta_wayland_data_source_notify_finish (source);
close (p[0]);
close (p[1]);
return;
}
meta_wayland_data_source_send (source, mimetype, p[1]);
close (p[1]);
channel = g_io_channel_unix_new (p[0]);
g_io_channel_set_close_on_unref (channel, TRUE);
g_io_add_watch (channel, G_IO_HUP, on_fake_read_hup, source);
}
static void
drag_grab_button (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandDragGrab *drag_grab = (MetaWaylandDragGrab*) grab;
MetaWaylandSeat *seat = drag_grab->seat;
ClutterEventType event_type = clutter_event_type (event);
if (drag_grab->generic.pointer->grab_button == clutter_event_get_button (event) &&
event_type == CLUTTER_BUTTON_RELEASE)
{
MetaWaylandDataSource *source = drag_grab->drag_data_source;
gboolean success;
if (drag_grab->drag_focus && source &&
meta_wayland_data_source_has_target (source) &&
meta_wayland_data_source_get_current_action (source))
{
meta_wayland_surface_drag_dest_drop (drag_grab->drag_focus);
meta_wayland_data_source_notify_drop_performed (source);
meta_wayland_data_source_update_in_ask (source);
success = TRUE;
}
else if (!drag_grab->drag_focus && source &&
meta_wayland_data_source_has_target (source) &&
meta_wayland_data_source_get_current_action (source) &&
meta_wayland_data_source_has_mime_type (source, ROOTWINDOW_DROP_MIME))
{
/* Perform a fake read, that will lead to notify_finish() being called */
meta_wayland_data_source_fake_read (source, ROOTWINDOW_DROP_MIME);
success = TRUE;
}
else
{
if (source)
meta_wayland_data_source_set_current_offer (source, NULL);
meta_wayland_data_device_set_dnd_source (&seat->data_device, NULL);
unset_selection_source (&seat->data_device, META_SELECTION_DND);
success = FALSE;
}
/* Finish drag and let actor self-destruct */
meta_dnd_actor_drag_finish (META_DND_ACTOR (drag_grab->feedback_actor), success);
drag_grab->feedback_actor = NULL;
}
if (seat->pointer->button_count == 0 &&
event_type == CLUTTER_BUTTON_RELEASE)
data_device_end_drag_grab (drag_grab);
}
static const MetaWaylandPointerGrabInterface drag_grab_interface = {
drag_grab_focus,
drag_grab_motion,
drag_grab_button,
};
static gboolean
keyboard_drag_grab_key (MetaWaylandKeyboardGrab *grab,
const ClutterEvent *event)
{
if (event->key.keyval == CLUTTER_KEY_Escape)
{
MetaWaylandDragGrab *drag_grab;
drag_grab = wl_container_of (grab, drag_grab, keyboard_grab);
meta_wayland_data_source_cancel (drag_grab->drag_data_source);
meta_wayland_data_source_set_current_offer (drag_grab->drag_data_source, NULL);
meta_dnd_actor_drag_finish (META_DND_ACTOR (drag_grab->feedback_actor), FALSE);
drag_grab->feedback_actor = NULL;
data_device_end_drag_grab (drag_grab);
return TRUE;
}
return FALSE;
}
static void
keyboard_drag_grab_modifiers (MetaWaylandKeyboardGrab *grab,
ClutterModifierType modifiers)
{
MetaWaylandDragGrab *drag_grab;
drag_grab = wl_container_of (grab, drag_grab, keyboard_grab);
/* The modifiers here just contain keyboard modifiers, mix it with the
* mouse button modifiers we got when starting the drag operation.
*/
modifiers |= drag_grab->buttons;
if (drag_grab->drag_data_source)
{
data_source_update_user_dnd_action (drag_grab->drag_data_source, modifiers);
if (drag_grab->drag_focus)
meta_wayland_surface_drag_dest_update (drag_grab->drag_focus);
}
}
static const MetaWaylandKeyboardGrabInterface keyboard_drag_grab_interface = {
keyboard_drag_grab_key,
keyboard_drag_grab_modifiers
};
static void
destroy_data_device_origin (struct wl_listener *listener, void *data)
{
MetaWaylandDragGrab *drag_grab =
wl_container_of (listener, drag_grab, drag_origin_listener);
drag_grab->drag_origin = NULL;
meta_wayland_data_device_set_dnd_source (&drag_grab->seat->data_device, NULL);
unset_selection_source (&drag_grab->seat->data_device, META_SELECTION_DND);
meta_wayland_data_source_set_current_offer (drag_grab->drag_data_source, NULL);
data_device_end_drag_grab (drag_grab);
}
static void
drag_grab_data_source_destroyed (gpointer data, GObject *where_the_object_was)
{
MetaWaylandDragGrab *drag_grab = data;
drag_grab->drag_data_source = NULL;
data_device_end_drag_grab (drag_grab);
}
static void
destroy_data_device_icon (struct wl_listener *listener, void *data)
{
MetaWaylandDragGrab *drag_grab =
wl_container_of (listener, drag_grab, drag_icon_listener);
drag_grab->drag_surface = NULL;
if (drag_grab->feedback_actor)
clutter_actor_remove_all_children (drag_grab->feedback_actor);
}
void
meta_wayland_data_device_start_drag (MetaWaylandDataDevice *data_device,
struct wl_client *client,
const MetaWaylandPointerGrabInterface *funcs,
MetaWaylandSurface *surface,
MetaWaylandDataSource *source,
MetaWaylandSurface *icon_surface)
{
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
MetaWaylandDragGrab *drag_grab;
graphene_point_t pos, surface_pos;
ClutterModifierType modifiers;
MetaSurfaceActor *surface_actor;
data_device->current_grab = drag_grab = g_new0 (MetaWaylandDragGrab, 1);
drag_grab->generic.interface = funcs;
drag_grab->generic.pointer = seat->pointer;
drag_grab->keyboard_grab.interface = &keyboard_drag_grab_interface;
drag_grab->keyboard_grab.keyboard = seat->keyboard;
drag_grab->drag_client = client;
drag_grab->seat = seat;
drag_grab->drag_origin = surface;
drag_grab->drag_origin_listener.notify = destroy_data_device_origin;
wl_resource_add_destroy_listener (surface->resource,
&drag_grab->drag_origin_listener);
surface_actor = meta_wayland_surface_get_actor (surface);
clutter_actor_transform_stage_point (CLUTTER_ACTOR (surface_actor),
seat->pointer->grab_x,
seat->pointer->grab_y,
&surface_pos.x, &surface_pos.y);
drag_grab->drag_start_x = surface_pos.x;
drag_grab->drag_start_y = surface_pos.y;
drag_grab->need_initial_focus = TRUE;
clutter_seat_query_state (clutter_input_device_get_seat (seat->pointer->device),
seat->pointer->device, NULL, NULL, &modifiers);
drag_grab->buttons = modifiers &
(CLUTTER_BUTTON1_MASK | CLUTTER_BUTTON2_MASK | CLUTTER_BUTTON3_MASK |
CLUTTER_BUTTON4_MASK | CLUTTER_BUTTON5_MASK);
meta_wayland_drag_grab_set_source (drag_grab, source);
meta_wayland_data_device_set_dnd_source (data_device,
drag_grab->drag_data_source);
data_source_update_user_dnd_action (source, modifiers);
if (icon_surface)
{
ClutterActor *drag_surface_actor;
drag_grab->drag_surface = icon_surface;
drag_grab->drag_icon_listener.notify = destroy_data_device_icon;
wl_resource_add_destroy_listener (icon_surface->resource,
&drag_grab->drag_icon_listener);
drag_surface_actor = CLUTTER_ACTOR (meta_wayland_surface_get_actor (drag_grab->drag_surface));
drag_grab->feedback_actor = meta_dnd_actor_new (CLUTTER_ACTOR (surface_actor),
drag_grab->drag_start_x,
drag_grab->drag_start_y);
meta_feedback_actor_set_anchor (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
0, 0);
clutter_actor_add_child (drag_grab->feedback_actor, drag_surface_actor);
clutter_seat_query_state (clutter_input_device_get_seat (seat->pointer->device),
seat->pointer->device, NULL, &pos, NULL);
meta_feedback_actor_set_position (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),
pos.x, pos.y);
}
meta_wayland_pointer_start_grab (seat->pointer,
(MetaWaylandPointerGrab*) drag_grab);
meta_wayland_data_source_set_seat (source, seat);
}
void
meta_wayland_data_device_end_drag (MetaWaylandDataDevice *data_device)
{
if (data_device->current_grab)
data_device_end_drag_grab (data_device->current_grab);
}
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, guint32 serial)
{
MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
MetaWaylandSurface *surface = NULL, *icon_surface = NULL;
MetaWaylandDataSource *drag_source = NULL;
MetaSelectionSource *selection_source;
if (origin_resource)
surface = wl_resource_get_user_data (origin_resource);
if (!surface)
return;
if (seat->pointer->button_count == 0 ||
seat->pointer->grab_serial != serial ||
!seat->pointer->focus_surface ||
seat->pointer->focus_surface != surface)
return;
/* FIXME: Check that the data source type array isn't empty. */
if (data_device->current_grab ||
seat->pointer->grab != &seat->pointer->default_grab)
return;
if (icon_resource)
icon_surface = wl_resource_get_user_data (icon_resource);
if (source_resource)
drag_source = wl_resource_get_user_data (source_resource);
if (icon_resource &&
!meta_wayland_surface_assign_role (icon_surface,
META_TYPE_WAYLAND_SURFACE_ROLE_DND,
NULL))
{
wl_resource_post_error (resource, WL_DATA_DEVICE_ERROR_ROLE,
"wl_surface@%d already has a different role",
wl_resource_get_id (icon_resource));
return;
}
selection_source = meta_selection_source_wayland_new (drag_source);
set_selection_source (data_device, META_SELECTION_DND,
selection_source);
g_object_unref (selection_source);
meta_wayland_pointer_set_focus (seat->pointer, NULL);
meta_wayland_data_device_start_drag (data_device, client,
&drag_grab_interface,
surface, drag_source, icon_surface);
if (meta_wayland_seat_has_keyboard (seat))
meta_wayland_keyboard_start_grab (seat->keyboard,
&seat->data_device.current_grab->keyboard_grab);
}
static void
selection_data_source_destroyed (gpointer data, GObject *object_was_here)
{
MetaWaylandDataDevice *data_device = data;
data_device->selection_data_source = NULL;
unset_selection_source (data_device, META_SELECTION_CLIPBOARD);
}
static void
meta_wayland_drag_dest_focus_in (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface,
MetaWaylandDataOffer *offer)
{
MetaWaylandDragGrab *grab = data_device->current_grab;
MetaWaylandDataSource *source;
struct wl_display *display;
struct wl_client *client;
struct wl_resource *resource;
uint32_t source_actions;
wl_fixed_t sx, sy;
if (!grab->drag_focus_data_device)
return;
client = wl_resource_get_client (surface->resource);
display = wl_client_get_display (client);
grab->drag_focus_listener.notify = destroy_drag_focus;
wl_resource_add_destroy_listener (grab->drag_focus_data_device,
&grab->drag_focus_listener);
resource = meta_wayland_data_offer_get_resource (offer);
if (wl_resource_get_version (resource) >=
WL_DATA_OFFER_SOURCE_ACTIONS_SINCE_VERSION)
{
source = meta_wayland_data_offer_get_source (offer);
meta_wayland_data_source_get_actions (source, &source_actions);
wl_data_offer_send_source_actions (resource, source_actions);
}
meta_wayland_pointer_get_relative_coordinates (grab->generic.pointer,
surface, &sx, &sy);
wl_data_device_send_enter (grab->drag_focus_data_device,
wl_display_next_serial (display),
surface->resource, sx, sy, resource);
}
static void
meta_wayland_drag_dest_focus_out (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface)
{
MetaWaylandDragGrab *grab = data_device->current_grab;
if (!grab->drag_focus_data_device)
return;
wl_data_device_send_leave (grab->drag_focus_data_device);
wl_list_remove (&grab->drag_focus_listener.link);
grab->drag_focus_data_device = NULL;
}
static void
meta_wayland_drag_dest_motion (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface,
const ClutterEvent *event)
{
MetaWaylandDragGrab *grab = data_device->current_grab;
wl_fixed_t sx, sy;
if (!grab->drag_focus_data_device)
return;
meta_wayland_pointer_get_relative_coordinates (grab->generic.pointer,
grab->drag_focus,
&sx, &sy);
wl_data_device_send_motion (grab->drag_focus_data_device,
clutter_event_get_time (event),
sx, sy);
}
static void
meta_wayland_drag_dest_drop (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface)
{
MetaWaylandDragGrab *grab = data_device->current_grab;
if (!grab->drag_focus_data_device)
return;
wl_data_device_send_drop (grab->drag_focus_data_device);
}
static void
meta_wayland_drag_dest_update (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface)
{
}
static const MetaWaylandDragDestFuncs meta_wayland_drag_dest_funcs = {
meta_wayland_drag_dest_focus_in,
meta_wayland_drag_dest_focus_out,
meta_wayland_drag_dest_motion,
meta_wayland_drag_dest_drop,
meta_wayland_drag_dest_update
};
const MetaWaylandDragDestFuncs *
meta_wayland_data_device_get_drag_dest_funcs (void)
{
return &meta_wayland_drag_dest_funcs;
}
static void
dnd_data_source_destroyed (gpointer data,
GObject *object_was_here)
{
MetaWaylandDataDevice *data_device = data;
data_device->dnd_data_source = NULL;
unset_selection_source (data_device, META_SELECTION_DND);
}
void
meta_wayland_data_device_set_dnd_source (MetaWaylandDataDevice *data_device,
MetaWaylandDataSource *source)
{
if (data_device->dnd_data_source == source)
return;
if (data_device->dnd_data_source)
{
g_object_weak_unref (G_OBJECT (data_device->dnd_data_source),
dnd_data_source_destroyed,
data_device);
}
data_device->dnd_data_source = source;
if (source)
{
g_object_weak_ref (G_OBJECT (source),
dnd_data_source_destroyed,
data_device);
}
}
void
meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,
MetaWaylandDataSource *source,
guint32 serial)
{
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
MetaSelectionSource *selection_source;
if (data_device->selection_data_source &&
data_device->selection_serial - serial < UINT32_MAX / 2)
return;
if (data_device->selection_data_source)
{
g_object_weak_unref (G_OBJECT (data_device->selection_data_source),
selection_data_source_destroyed,
data_device);
data_device->selection_data_source = NULL;
}
data_device->selection_data_source = source;
data_device->selection_serial = serial;
if (source)
{
meta_wayland_data_source_set_seat (source, seat);
g_object_weak_ref (G_OBJECT (source),
selection_data_source_destroyed,
data_device);
selection_source = meta_selection_source_wayland_new (source);
}
else
{
selection_source = g_object_new (META_TYPE_SELECTION_SOURCE_MEMORY, NULL);
}
set_selection_source (data_device, META_SELECTION_CLIPBOARD,
selection_source);
g_object_unref (selection_source);
}
static void
data_device_set_selection (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *source_resource,
guint32 serial)
{
MetaWaylandDataDevice *data_device = wl_resource_get_user_data (resource);
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
MetaWaylandDataSource *source;
if (source_resource)
source = wl_resource_get_user_data (source_resource);
else
source = NULL;
if (source)
{
if (meta_wayland_data_source_get_actions (source, NULL))
{
wl_resource_post_error(source_resource,
WL_DATA_SOURCE_ERROR_INVALID_SOURCE,
"cannot set drag-and-drop source as selection");
return;
}
}
if (wl_resource_get_client (resource) !=
meta_wayland_keyboard_get_focus_client (seat->keyboard))
{
if (source)
meta_wayland_data_source_cancel (source);
return;
}
/* FIXME: Store serial and check against incoming serial here. */
meta_wayland_data_device_set_selection (data_device, source, serial);
}
static const struct wl_data_device_interface data_device_interface = {
data_device_start_drag,
data_device_set_selection,
default_destructor,
};
static void
create_data_source (struct wl_client *client,
struct wl_resource *resource, guint32 id)
{
struct wl_resource *source_resource;
source_resource = wl_resource_create (client, &wl_data_source_interface,
wl_resource_get_version (resource), id);
meta_wayland_data_source_new (source_resource);
}
static void
owner_changed_cb (MetaSelection *selection,
MetaSelectionType selection_type,
MetaSelectionSource *new_owner,
MetaWaylandDataDevice *data_device)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
MetaWaylandSeat *seat = compositor->seat;
struct wl_resource *data_device_resource;
struct wl_client *focus_client;
focus_client = meta_wayland_keyboard_get_focus_client (seat->keyboard);
if (!focus_client)
return;
if (selection_type == META_SELECTION_CLIPBOARD)
{
wl_resource_for_each (data_device_resource, &data_device->focus_resource_list)
{
struct wl_resource *offer = NULL;
if (new_owner)
{
offer = create_and_send_clipboard_offer (data_device,
data_device_resource);
}
wl_data_device_send_selection (data_device_resource, offer);
}
}
}
static void
ensure_owners_changed_handler_connected (MetaWaylandDataDevice *data_device)
{
if (data_device->selection_owner_signal_id != 0)
return;
data_device->selection_owner_signal_id =
g_signal_connect (meta_display_get_selection (meta_get_display ()),
"owner-changed",
G_CALLBACK (owner_changed_cb), data_device);
}
static void
get_data_device (struct wl_client *client,
struct wl_resource *manager_resource,
guint32 id, struct wl_resource *seat_resource)
{
MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
struct wl_resource *cr;
struct wl_resource *data_device_resource;
cr = wl_resource_create (client, &wl_data_device_interface, wl_resource_get_version (manager_resource), id);
wl_resource_set_implementation (cr, &data_device_interface, &seat->data_device, unbind_resource);
data_device_resource =
wl_resource_find_for_client (&seat->data_device.resource_list, client);
if (data_device_resource)
{
wl_list_remove (wl_resource_get_link (data_device_resource));
wl_list_init (wl_resource_get_link (data_device_resource));
}
wl_list_insert (&seat->data_device.resource_list, wl_resource_get_link (cr));
ensure_owners_changed_handler_connected (&seat->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, guint32 version, guint32 id)
{
struct wl_resource *resource;
resource = wl_resource_create (client, &wl_data_device_manager_interface, version, id);
wl_resource_set_implementation (resource, &manager_interface, NULL, NULL);
}
void
meta_wayland_data_device_manager_init (MetaWaylandCompositor *compositor)
{
if (wl_global_create (compositor->wayland_display,
&wl_data_device_manager_interface,
META_WL_DATA_DEVICE_MANAGER_VERSION,
NULL, bind_manager) == NULL)
g_error ("Could not create data_device");
}
void
meta_wayland_data_device_init (MetaWaylandDataDevice *data_device)
{
wl_list_init (&data_device->resource_list);
wl_list_init (&data_device->focus_resource_list);
}
static struct wl_resource *
create_and_send_clipboard_offer (MetaWaylandDataDevice *data_device,
struct wl_resource *target)
{
MetaWaylandDataOffer *offer;
MetaDisplay *display = meta_get_display ();
struct wl_resource *resource;
GList *mimetypes, *l;
mimetypes = meta_selection_get_mimetypes (meta_display_get_selection (display),
META_SELECTION_CLIPBOARD);
if (!mimetypes)
return NULL;
offer = meta_wayland_data_offer_new (META_SELECTION_CLIPBOARD, NULL, target);
resource = meta_wayland_data_offer_get_resource (offer);
wl_data_device_send_data_offer (target, resource);
for (l = mimetypes; l; l = l->next)
wl_data_offer_send_offer (resource, l->data);
g_list_free_full (mimetypes, g_free);
return resource;
}
void
meta_wayland_data_device_set_keyboard_focus (MetaWaylandDataDevice *data_device)
{
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
struct wl_client *focus_client;
struct wl_resource *data_device_resource;
focus_client = meta_wayland_keyboard_get_focus_client (seat->keyboard);
if (focus_client == data_device->focus_client)
return;
data_device->focus_client = focus_client;
move_resources (&data_device->resource_list,
&data_device->focus_resource_list);
if (!focus_client)
return;
move_resources_for_client (&data_device->focus_resource_list,
&data_device->resource_list,
focus_client);
wl_resource_for_each (data_device_resource, &data_device->focus_resource_list)
{
struct wl_resource *offer;
offer = create_and_send_clipboard_offer (data_device, data_device_resource);
wl_data_device_send_selection (data_device_resource, offer);
}
}
gboolean
meta_wayland_data_device_is_dnd_surface (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface)
{
return data_device->current_grab &&
data_device->current_grab->drag_surface == surface;
}
MetaWaylandDragGrab *
meta_wayland_data_device_get_current_grab (MetaWaylandDataDevice *data_device)
{
return data_device->current_grab;
}
void
meta_wayland_data_device_unset_dnd_selection (MetaWaylandDataDevice *data_device)
{
unset_selection_source (data_device, META_SELECTION_DND);
}
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