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mutter-performance-source/src/wayland/meta-wayland-pointer.c
Carlos Garnacho 5db48faca4 wayland: Update button state on motion/button events 
More specifically, avoid crossing events, since clutter does not set
modifier/button state on those. Fixes implicit grabs being broken when
the pointer moves past the surface boundaries.

https://bugzilla.gnome.org/show_bug.cgi?id=785347
2017-07-24 17:57:31 +02:00

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/*
* Wayland Support
*
* Copyright (C) 2013 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Copyright © 2008 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/input.c from Weston */
#include "config.h"
#include <clutter/clutter.h>
#include <clutter/evdev/clutter-evdev.h>
#include <cogl/cogl.h>
#include <cogl/cogl-wayland-server.h>
#include <linux/input.h>
#include "meta-wayland-pointer.h"
#include "meta-wayland-popup.h"
#include "meta-wayland-private.h"
#include "meta-wayland-seat.h"
#include "meta-wayland-surface.h"
#include "meta-wayland-buffer.h"
#include "meta-wayland-surface-role-cursor.h"
#include "meta-xwayland.h"
#include "meta-cursor.h"
#include "meta-cursor-tracker-private.h"
#include "meta-surface-actor-wayland.h"
#include "meta/meta-cursor-tracker.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-cursor-tracker-private.h"
#include "backends/meta-cursor-renderer.h"
#include "relative-pointer-unstable-v1-server-protocol.h"
#ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-backend-native.h"
#endif
#include <string.h>
#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int (10)
enum {
FOCUS_SURFACE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_TYPE (MetaWaylandPointer, meta_wayland_pointer,
META_TYPE_WAYLAND_INPUT_DEVICE)
static void
meta_wayland_pointer_set_current (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface);
static void
meta_wayland_pointer_reset_grab (MetaWaylandPointer *pointer);
static void
meta_wayland_pointer_cancel_grab (MetaWaylandPointer *pointer);
static MetaWaylandPointerClient *
meta_wayland_pointer_client_new (void)
{
MetaWaylandPointerClient *pointer_client;
pointer_client = g_slice_new0 (MetaWaylandPointerClient);
wl_list_init (&pointer_client->pointer_resources);
wl_list_init (&pointer_client->swipe_gesture_resources);
wl_list_init (&pointer_client->pinch_gesture_resources);
wl_list_init (&pointer_client->relative_pointer_resources);
return pointer_client;
}
static void
meta_wayland_pointer_client_free (MetaWaylandPointerClient *pointer_client)
{
struct wl_resource *resource, *next;
/* Since we make every wl_pointer resource defunct when we stop advertising
* the pointer capability on the wl_seat, we need to make sure all the
* resources in the pointer client instance gets removed.
*/
wl_resource_for_each_safe (resource, next, &pointer_client->pointer_resources)
{
wl_list_remove (wl_resource_get_link (resource));
wl_list_init (wl_resource_get_link (resource));
}
wl_resource_for_each_safe (resource, next, &pointer_client->swipe_gesture_resources)
{
wl_list_remove (wl_resource_get_link (resource));
wl_list_init (wl_resource_get_link (resource));
}
wl_resource_for_each_safe (resource, next, &pointer_client->pinch_gesture_resources)
{
wl_list_remove (wl_resource_get_link (resource));
wl_list_init (wl_resource_get_link (resource));
}
wl_resource_for_each_safe (resource, next, &pointer_client->relative_pointer_resources)
{
wl_list_remove (wl_resource_get_link (resource));
wl_list_init (wl_resource_get_link (resource));
}
g_slice_free (MetaWaylandPointerClient, pointer_client);
}
static gboolean
meta_wayland_pointer_client_is_empty (MetaWaylandPointerClient *pointer_client)
{
return (wl_list_empty (&pointer_client->pointer_resources) &&
wl_list_empty (&pointer_client->swipe_gesture_resources) &&
wl_list_empty (&pointer_client->pinch_gesture_resources) &&
wl_list_empty (&pointer_client->relative_pointer_resources));
}
MetaWaylandPointerClient *
meta_wayland_pointer_get_pointer_client (MetaWaylandPointer *pointer,
struct wl_client *client)
{
if (!pointer->pointer_clients)
return NULL;
return g_hash_table_lookup (pointer->pointer_clients, client);
}
static MetaWaylandPointerClient *
meta_wayland_pointer_ensure_pointer_client (MetaWaylandPointer *pointer,
struct wl_client *client)
{
MetaWaylandPointerClient *pointer_client;
pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
if (pointer_client)
return pointer_client;
pointer_client = meta_wayland_pointer_client_new ();
g_hash_table_insert (pointer->pointer_clients, client, pointer_client);
if (!pointer->focus_client &&
pointer->focus_surface &&
wl_resource_get_client (pointer->focus_surface->resource) == client)
pointer->focus_client = pointer_client;
return pointer_client;
}
static void
meta_wayland_pointer_cleanup_pointer_client (MetaWaylandPointer *pointer,
MetaWaylandPointerClient *pointer_client,
struct wl_client *client)
{
if (meta_wayland_pointer_client_is_empty (pointer_client))
{
if (pointer->focus_client == pointer_client)
pointer->focus_client = NULL;
g_hash_table_remove (pointer->pointer_clients, client);
}
}
void
meta_wayland_pointer_unbind_pointer_client_resource (struct wl_resource *resource)
{
MetaWaylandPointer *pointer = wl_resource_get_user_data (resource);
MetaWaylandPointerClient *pointer_client;
struct wl_client *client = wl_resource_get_client (resource);
wl_list_remove (wl_resource_get_link (resource));
pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
if (!pointer_client)
{
/* This happens if all pointer devices were unplugged and no new resources
* were created by the client.
*
* If this is a resource that was previously made defunct, pointer_client
* be non-NULL but it is harmless since the below cleanup call will be
* prevented from removing the pointer client because of valid resources.
*/
return;
}
meta_wayland_pointer_cleanup_pointer_client (pointer,
pointer_client,
client);
}
static void
sync_focus_surface (MetaWaylandPointer *pointer)
{
MetaDisplay *display = meta_get_display ();
switch (display->event_route)
{
case META_EVENT_ROUTE_WINDOW_OP:
case META_EVENT_ROUTE_COMPOSITOR_GRAB:
case META_EVENT_ROUTE_FRAME_BUTTON:
/* The compositor has a grab, so remove our focus... */
meta_wayland_pointer_set_focus (pointer, NULL);
break;
case META_EVENT_ROUTE_NORMAL:
case META_EVENT_ROUTE_WAYLAND_POPUP:
{
const MetaWaylandPointerGrabInterface *interface = pointer->grab->interface;
interface->focus (pointer->grab, pointer->current);
}
break;
default:
g_assert_not_reached ();
}
}
static void
meta_wayland_pointer_send_frame (MetaWaylandPointer *pointer,
struct wl_resource *resource)
{
if (wl_resource_get_version (resource) >= WL_POINTER_AXIS_SOURCE_SINCE_VERSION)
wl_pointer_send_frame (resource);
}
void
meta_wayland_pointer_broadcast_frame (MetaWaylandPointer *pointer)
{
struct wl_resource *resource;
if (!pointer->focus_client)
return;
wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
{
meta_wayland_pointer_send_frame (pointer, resource);
}
}
void
meta_wayland_pointer_send_relative_motion (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
struct wl_resource *resource;
double dx, dy;
double dx_unaccel, dy_unaccel;
uint64_t time_us;
uint32_t time_us_hi;
uint32_t time_us_lo;
wl_fixed_t dxf, dyf;
wl_fixed_t dx_unaccelf, dy_unaccelf;
if (!pointer->focus_client)
return;
if (!meta_backend_get_relative_motion_deltas (meta_get_backend (),
event,
&dx, &dy,
&dx_unaccel, &dy_unaccel))
return;
#ifdef HAVE_NATIVE_BACKEND
time_us = clutter_evdev_event_get_time_usec (event);
if (time_us == 0)
#endif
time_us = clutter_event_get_time (event) * 1000ULL;
time_us_hi = (uint32_t) (time_us >> 32);
time_us_lo = (uint32_t) time_us;
dxf = wl_fixed_from_double (dx);
dyf = wl_fixed_from_double (dy);
dx_unaccelf = wl_fixed_from_double (dx_unaccel);
dy_unaccelf = wl_fixed_from_double (dy_unaccel);
wl_resource_for_each (resource,
&pointer->focus_client->relative_pointer_resources)
{
zwp_relative_pointer_v1_send_relative_motion (resource,
time_us_hi,
time_us_lo,
dxf,
dyf,
dx_unaccelf,
dy_unaccelf);
}
}
void
meta_wayland_pointer_send_motion (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
struct wl_resource *resource;
uint32_t time;
float sx, sy;
if (!pointer->focus_client)
return;
time = clutter_event_get_time (event);
meta_wayland_surface_get_relative_coordinates (pointer->focus_surface,
event->motion.x,
event->motion.y,
&sx, &sy);
wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
{
wl_pointer_send_motion (resource, time,
wl_fixed_from_double (sx),
wl_fixed_from_double (sy));
}
meta_wayland_pointer_send_relative_motion (pointer, event);
meta_wayland_pointer_broadcast_frame (pointer);
}
void
meta_wayland_pointer_send_button (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
struct wl_resource *resource;
ClutterEventType event_type;
event_type = clutter_event_type (event);
if (pointer->focus_client &&
!wl_list_empty (&pointer->focus_client->pointer_resources))
{
MetaWaylandInputDevice *input_device =
META_WAYLAND_INPUT_DEVICE (pointer);
uint32_t time;
uint32_t button;
uint32_t serial;
#ifdef HAVE_NATIVE_BACKEND
MetaBackend *backend = meta_get_backend ();
if (META_IS_BACKEND_NATIVE (backend))
button = clutter_evdev_event_get_event_code (event);
else
#endif
{
button = clutter_event_get_button (event);
switch (button)
{
case 1:
button = BTN_LEFT;
break;
/* The evdev input right and middle button numbers are swapped
relative to how Clutter numbers them */
case 2:
button = BTN_MIDDLE;
break;
case 3:
button = BTN_RIGHT;
break;
default:
button = button + (BTN_LEFT - 1) + 4;
break;
}
}
time = clutter_event_get_time (event);
serial = meta_wayland_input_device_next_serial (input_device);
wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
{
wl_pointer_send_button (resource, serial,
time, button,
event_type == CLUTTER_BUTTON_PRESS ? 1 : 0);
}
meta_wayland_pointer_broadcast_frame (pointer);
}
if (pointer->button_count == 0 && event_type == CLUTTER_BUTTON_RELEASE)
sync_focus_surface (pointer);
}
static void
default_grab_focus (MetaWaylandPointerGrab *grab,
MetaWaylandSurface *surface)
{
MetaWaylandPointer *pointer = grab->pointer;
MetaWaylandSeat *seat = meta_wayland_pointer_get_seat (pointer);
MetaDisplay *display = meta_get_display ();
if (pointer->button_count > 0)
return;
switch (display->event_route)
{
case META_EVENT_ROUTE_WINDOW_OP:
case META_EVENT_ROUTE_COMPOSITOR_GRAB:
case META_EVENT_ROUTE_FRAME_BUTTON:
return;
break;
case META_EVENT_ROUTE_NORMAL:
case META_EVENT_ROUTE_WAYLAND_POPUP:
break;
}
if (meta_wayland_seat_has_pointer (seat))
meta_wayland_pointer_set_focus (pointer, surface);
}
static void
default_grab_motion (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandPointer *pointer = grab->pointer;
meta_wayland_pointer_send_motion (pointer, event);
}
static void
default_grab_button (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandPointer *pointer = grab->pointer;
meta_wayland_pointer_send_button (pointer, event);
}
static const MetaWaylandPointerGrabInterface default_pointer_grab_interface = {
default_grab_focus,
default_grab_motion,
default_grab_button
};
static void
meta_wayland_pointer_on_cursor_changed (MetaCursorTracker *cursor_tracker,
MetaWaylandPointer *pointer)
{
if (pointer->cursor_surface)
meta_wayland_surface_update_outputs (pointer->cursor_surface);
}
void
meta_wayland_pointer_enable (MetaWaylandPointer *pointer)
{
MetaBackend *backend = meta_get_backend ();
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
ClutterDeviceManager *manager;
pointer->pointer_clients =
g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) meta_wayland_pointer_client_free);
pointer->cursor_surface = NULL;
manager = clutter_device_manager_get_default ();
pointer->device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
g_signal_connect (cursor_tracker,
"cursor-changed",
G_CALLBACK (meta_wayland_pointer_on_cursor_changed),
pointer);
}
void
meta_wayland_pointer_disable (MetaWaylandPointer *pointer)
{
MetaBackend *backend = meta_get_backend ();
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
g_signal_handlers_disconnect_by_func (cursor_tracker,
(gpointer) meta_wayland_pointer_on_cursor_changed,
pointer);
if (pointer->cursor_surface && pointer->cursor_surface_destroy_id)
{
g_signal_handler_disconnect (pointer->cursor_surface,
pointer->cursor_surface_destroy_id);
}
meta_wayland_pointer_cancel_grab (pointer);
meta_wayland_pointer_reset_grab (pointer);
meta_wayland_pointer_set_focus (pointer, NULL);
meta_wayland_pointer_set_current (pointer, NULL);
g_clear_pointer (&pointer->pointer_clients, g_hash_table_unref);
pointer->cursor_surface = NULL;
}
static int
count_buttons (const ClutterEvent *event)
{
static gint maskmap[5] =
{
CLUTTER_BUTTON1_MASK, CLUTTER_BUTTON2_MASK, CLUTTER_BUTTON3_MASK,
CLUTTER_BUTTON4_MASK, CLUTTER_BUTTON5_MASK
};
ClutterModifierType mod_mask;
int i, count;
mod_mask = clutter_event_get_state (event);
count = 0;
for (i = 0; i < 5; i++)
{
if (mod_mask & maskmap[i])
count++;
}
return count;
}
static void
current_surface_destroyed (MetaWaylandSurface *surface,
MetaWaylandPointer *pointer)
{
meta_wayland_pointer_set_current (pointer, NULL);
}
static void
meta_wayland_pointer_set_current (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
if (pointer->current)
{
g_signal_handler_disconnect (pointer->current,
pointer->current_surface_destroyed_handler_id);
pointer->current = NULL;
}
if (surface)
{
pointer->current = surface;
pointer->current_surface_destroyed_handler_id =
g_signal_connect (surface, "destroy",
G_CALLBACK (current_surface_destroyed),
pointer);
}
}
static void
repick_for_event (MetaWaylandPointer *pointer,
const ClutterEvent *for_event)
{
ClutterActor *actor;
MetaWaylandSurface *surface;
if (for_event)
actor = clutter_event_get_source (for_event);
else
actor = clutter_input_device_get_pointer_actor (pointer->device);
if (META_IS_SURFACE_ACTOR_WAYLAND (actor))
{
MetaSurfaceActorWayland *actor_wayland =
META_SURFACE_ACTOR_WAYLAND (actor);
surface = meta_surface_actor_wayland_get_surface (actor_wayland);
}
else
{
surface = NULL;
}
meta_wayland_pointer_set_current (pointer, surface);
sync_focus_surface (pointer);
meta_wayland_pointer_update_cursor_surface (pointer);
}
void
meta_wayland_pointer_update (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
repick_for_event (pointer, event);
if (event->type == CLUTTER_MOTION ||
event->type == CLUTTER_BUTTON_PRESS ||
event->type == CLUTTER_BUTTON_RELEASE)
{
pointer->button_count = count_buttons (event);
}
}
static void
notify_motion (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
pointer->grab->interface->motion (pointer->grab, event);
}
static void
handle_motion_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
notify_motion (pointer, event);
}
static void
handle_button_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
gboolean implicit_grab;
implicit_grab = (event->type == CLUTTER_BUTTON_PRESS) && (pointer->button_count == 1);
if (implicit_grab)
{
pointer->grab_button = clutter_event_get_button (event);
pointer->grab_time = clutter_event_get_time (event);
clutter_event_get_coords (event, &pointer->grab_x, &pointer->grab_y);
}
pointer->grab->interface->button (pointer->grab, event);
if (implicit_grab)
{
MetaWaylandSeat *seat = meta_wayland_pointer_get_seat (pointer);
pointer->grab_serial = wl_display_get_serial (seat->wl_display);
}
}
static void
handle_scroll_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
struct wl_resource *resource;
wl_fixed_t x_value = 0, y_value = 0;
int x_discrete = 0, y_discrete = 0;
enum wl_pointer_axis_source source = -1;
if (clutter_event_is_pointer_emulated (event))
return;
switch (event->scroll.scroll_source)
{
case CLUTTER_SCROLL_SOURCE_WHEEL:
source = WL_POINTER_AXIS_SOURCE_WHEEL;
break;
case CLUTTER_SCROLL_SOURCE_FINGER:
source = WL_POINTER_AXIS_SOURCE_FINGER;
break;
case CLUTTER_SCROLL_SOURCE_CONTINUOUS:
source = WL_POINTER_AXIS_SOURCE_CONTINUOUS;
break;
default:
source = WL_POINTER_AXIS_SOURCE_WHEEL;
break;
}
switch (clutter_event_get_scroll_direction (event))
{
case CLUTTER_SCROLL_UP:
y_value = -DEFAULT_AXIS_STEP_DISTANCE;
y_discrete = -1;
break;
case CLUTTER_SCROLL_DOWN:
y_value = DEFAULT_AXIS_STEP_DISTANCE;
y_discrete = 1;
break;
case CLUTTER_SCROLL_LEFT:
x_value = -DEFAULT_AXIS_STEP_DISTANCE;
x_discrete = -1;
break;
case CLUTTER_SCROLL_RIGHT:
x_value = DEFAULT_AXIS_STEP_DISTANCE;
x_discrete = 1;
break;
case CLUTTER_SCROLL_SMOOTH:
{
double dx, dy;
/* Clutter smooth scroll events are in discrete steps (1 step = 1.0 long
* vector along one axis). To convert to smooth scroll events that are
* in pointer motion event space, multiply the vector with the 10. */
const double factor = 10.0;
clutter_event_get_scroll_delta (event, &dx, &dy);
x_value = wl_fixed_from_double (dx) * factor;
y_value = wl_fixed_from_double (dy) * factor;
}
break;
default:
return;
}
if (pointer->focus_client)
{
wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
{
if (wl_resource_get_version (resource) >= WL_POINTER_AXIS_SOURCE_SINCE_VERSION)
wl_pointer_send_axis_source (resource, source);
/* X axis */
if (x_discrete != 0 &&
wl_resource_get_version (resource) >= WL_POINTER_AXIS_DISCRETE_SINCE_VERSION)
wl_pointer_send_axis_discrete (resource,
WL_POINTER_AXIS_HORIZONTAL_SCROLL,
x_discrete);
if (x_value)
wl_pointer_send_axis (resource, clutter_event_get_time (event),
WL_POINTER_AXIS_HORIZONTAL_SCROLL, x_value);
if ((event->scroll.finish_flags & CLUTTER_SCROLL_FINISHED_HORIZONTAL) &&
wl_resource_get_version (resource) >= WL_POINTER_AXIS_STOP_SINCE_VERSION)
wl_pointer_send_axis_stop (resource,
clutter_event_get_time (event),
WL_POINTER_AXIS_HORIZONTAL_SCROLL);
/* Y axis */
if (y_discrete != 0 &&
wl_resource_get_version (resource) >= WL_POINTER_AXIS_DISCRETE_SINCE_VERSION)
wl_pointer_send_axis_discrete (resource,
WL_POINTER_AXIS_VERTICAL_SCROLL,
y_discrete);
if (y_value)
wl_pointer_send_axis (resource, clutter_event_get_time (event),
WL_POINTER_AXIS_VERTICAL_SCROLL, y_value);
if ((event->scroll.finish_flags & CLUTTER_SCROLL_FINISHED_VERTICAL) &&
wl_resource_get_version (resource) >= WL_POINTER_AXIS_STOP_SINCE_VERSION)
wl_pointer_send_axis_stop (resource,
clutter_event_get_time (event),
WL_POINTER_AXIS_VERTICAL_SCROLL);
}
meta_wayland_pointer_broadcast_frame (pointer);
}
}
gboolean
meta_wayland_pointer_handle_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
switch (event->type)
{
case CLUTTER_MOTION:
handle_motion_event (pointer, event);
break;
case CLUTTER_BUTTON_PRESS:
case CLUTTER_BUTTON_RELEASE:
handle_button_event (pointer, event);
break;
case CLUTTER_SCROLL:
handle_scroll_event (pointer, event);
break;
case CLUTTER_TOUCHPAD_SWIPE:
meta_wayland_pointer_gesture_swipe_handle_event (pointer, event);
break;
case CLUTTER_TOUCHPAD_PINCH:
meta_wayland_pointer_gesture_pinch_handle_event (pointer, event);
break;
default:
break;
}
return FALSE;
}
static void
meta_wayland_pointer_send_enter (MetaWaylandPointer *pointer,
struct wl_resource *pointer_resource,
uint32_t serial,
MetaWaylandSurface *surface)
{
wl_fixed_t sx, sy;
meta_wayland_pointer_get_relative_coordinates (pointer, surface, &sx, &sy);
wl_pointer_send_enter (pointer_resource,
serial,
surface->resource,
sx, sy);
}
static void
meta_wayland_pointer_send_leave (MetaWaylandPointer *pointer,
struct wl_resource *pointer_resource,
uint32_t serial,
MetaWaylandSurface *surface)
{
wl_pointer_send_leave (pointer_resource, serial, surface->resource);
}
static void
meta_wayland_pointer_broadcast_enter (MetaWaylandPointer *pointer,
uint32_t serial,
MetaWaylandSurface *surface)
{
struct wl_resource *pointer_resource;
wl_resource_for_each (pointer_resource,
&pointer->focus_client->pointer_resources)
meta_wayland_pointer_send_enter (pointer, pointer_resource,
serial, surface);
meta_wayland_pointer_broadcast_frame (pointer);
}
static void
meta_wayland_pointer_broadcast_leave (MetaWaylandPointer *pointer,
uint32_t serial,
MetaWaylandSurface *surface)
{
struct wl_resource *pointer_resource;
wl_resource_for_each (pointer_resource,
&pointer->focus_client->pointer_resources)
meta_wayland_pointer_send_leave (pointer, pointer_resource,
serial, surface);
meta_wayland_pointer_broadcast_frame (pointer);
}
static void
focus_surface_destroyed (MetaWaylandSurface *surface,
MetaWaylandPointer *pointer)
{
meta_wayland_pointer_set_focus (pointer, NULL);
}
void
meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
MetaWaylandInputDevice *input_device = META_WAYLAND_INPUT_DEVICE (pointer);
if (pointer->focus_surface == surface)
return;
if (pointer->focus_surface != NULL)
{
uint32_t serial;
serial = meta_wayland_input_device_next_serial (input_device);
if (pointer->focus_client)
{
meta_wayland_pointer_broadcast_leave (pointer,
serial,
pointer->focus_surface);
pointer->focus_client = NULL;
}
g_signal_handler_disconnect (pointer->focus_surface,
pointer->focus_surface_destroyed_handler_id);
pointer->focus_surface_destroyed_handler_id = 0;
pointer->focus_surface = NULL;
}
if (surface != NULL)
{
struct wl_client *client = wl_resource_get_client (surface->resource);
ClutterPoint pos;
pointer->focus_surface = surface;
pointer->focus_surface_destroyed_handler_id =
g_signal_connect_after (pointer->focus_surface, "destroy",
G_CALLBACK (focus_surface_destroyed),
pointer);
clutter_input_device_get_coords (pointer->device, NULL, &pos);
if (pointer->focus_surface->window)
meta_window_handle_enter (pointer->focus_surface->window,
/* XXX -- can we reliably get a timestamp for setting focus? */
clutter_get_current_event_time (),
pos.x, pos.y);
pointer->focus_client =
meta_wayland_pointer_get_pointer_client (pointer, client);
if (pointer->focus_client)
{
pointer->focus_serial =
meta_wayland_input_device_next_serial (input_device);
meta_wayland_pointer_broadcast_enter (pointer,
pointer->focus_serial,
pointer->focus_surface);
}
}
meta_wayland_pointer_update_cursor_surface (pointer);
g_signal_emit (pointer, signals[FOCUS_SURFACE_CHANGED], 0);
}
void
meta_wayland_pointer_start_grab (MetaWaylandPointer *pointer,
MetaWaylandPointerGrab *grab)
{
const MetaWaylandPointerGrabInterface *interface;
meta_wayland_pointer_cancel_grab (pointer);
pointer->grab = grab;
interface = pointer->grab->interface;
grab->pointer = pointer;
interface->focus (pointer->grab, pointer->current);
}
static void
meta_wayland_pointer_reset_grab (MetaWaylandPointer *pointer)
{
pointer->grab = &pointer->default_grab;
}
void
meta_wayland_pointer_end_grab (MetaWaylandPointer *pointer)
{
const MetaWaylandPointerGrabInterface *interface;
pointer->grab = &pointer->default_grab;
interface = pointer->grab->interface;
interface->focus (pointer->grab, pointer->current);
meta_wayland_pointer_update_cursor_surface (pointer);
}
static void
meta_wayland_pointer_cancel_grab (MetaWaylandPointer *pointer)
{
if (pointer->grab->interface->cancel)
pointer->grab->interface->cancel (pointer->grab);
}
void
meta_wayland_pointer_end_popup_grab (MetaWaylandPointer *pointer)
{
MetaWaylandPopupGrab *popup_grab = (MetaWaylandPopupGrab*)pointer->grab;
meta_wayland_popup_grab_destroy (popup_grab);
}
MetaWaylandPopup *
meta_wayland_pointer_start_popup_grab (MetaWaylandPointer *pointer,
MetaWaylandPopupSurface *popup_surface)
{
MetaWaylandPopupGrab *grab;
if (pointer->grab != &pointer->default_grab &&
!meta_wayland_pointer_grab_is_popup_grab (pointer->grab))
return NULL;
if (pointer->grab == &pointer->default_grab)
grab = meta_wayland_popup_grab_create (pointer, popup_surface);
else
grab = (MetaWaylandPopupGrab*)pointer->grab;
return meta_wayland_popup_create (popup_surface, grab);
}
void
meta_wayland_pointer_repick (MetaWaylandPointer *pointer)
{
repick_for_event (pointer, NULL);
}
void
meta_wayland_pointer_get_relative_coordinates (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface,
wl_fixed_t *sx,
wl_fixed_t *sy)
{
float xf = 0.0f, yf = 0.0f;
ClutterPoint pos;
clutter_input_device_get_coords (pointer->device, NULL, &pos);
meta_wayland_surface_get_relative_coordinates (surface, pos.x, pos.y, &xf, &yf);
*sx = wl_fixed_from_double (xf);
*sy = wl_fixed_from_double (yf);
}
void
meta_wayland_pointer_update_cursor_surface (MetaWaylandPointer *pointer)
{
MetaBackend *backend = meta_get_backend ();
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
if (pointer->current)
{
MetaCursorSprite *cursor_sprite = NULL;
if (pointer->cursor_surface)
{
MetaWaylandSurfaceRoleCursor *cursor_role =
META_WAYLAND_SURFACE_ROLE_CURSOR (pointer->cursor_surface->role);
cursor_sprite = meta_wayland_surface_role_cursor_get_sprite (cursor_role);
}
meta_cursor_tracker_set_window_cursor (cursor_tracker, cursor_sprite);
}
else
{
meta_cursor_tracker_unset_window_cursor (cursor_tracker);
}
}
static void
ensure_update_cursor_surface (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
if (pointer->cursor_surface != surface)
return;
pointer->cursor_surface = NULL;
meta_wayland_pointer_update_cursor_surface (pointer);
}
static void
meta_wayland_pointer_set_cursor_surface (MetaWaylandPointer *pointer,
MetaWaylandSurface *cursor_surface)
{
MetaWaylandSurface *prev_cursor_surface;
prev_cursor_surface = pointer->cursor_surface;
if (prev_cursor_surface == cursor_surface)
return;
pointer->cursor_surface = cursor_surface;
if (prev_cursor_surface)
{
meta_wayland_surface_update_outputs (prev_cursor_surface);
g_signal_handler_disconnect (prev_cursor_surface,
pointer->cursor_surface_destroy_id);
}
if (cursor_surface)
{
pointer->cursor_surface_destroy_id =
g_signal_connect_swapped (cursor_surface, "destroy",
G_CALLBACK (ensure_update_cursor_surface),
pointer);
}
meta_wayland_pointer_update_cursor_surface (pointer);
}
static void
pointer_set_cursor (struct wl_client *client,
struct wl_resource *resource,
uint32_t serial,
struct wl_resource *surface_resource,
int32_t hot_x, int32_t hot_y)
{
MetaWaylandPointer *pointer = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface;
surface = (surface_resource ? wl_resource_get_user_data (surface_resource) : NULL);
if (pointer->focus_surface == NULL)
return;
if (wl_resource_get_client (pointer->focus_surface->resource) != client)
return;
if (pointer->focus_serial - serial > G_MAXUINT32 / 2)
return;
if (surface &&
!meta_wayland_surface_assign_role (surface,
META_TYPE_WAYLAND_SURFACE_ROLE_CURSOR,
NULL))
{
wl_resource_post_error (resource, WL_POINTER_ERROR_ROLE,
"wl_surface@%d already has a different role",
wl_resource_get_id (surface_resource));
return;
}
if (surface)
{
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (meta_get_backend ());
MetaWaylandSurfaceRoleCursor *cursor_role;
cursor_role = META_WAYLAND_SURFACE_ROLE_CURSOR (surface->role);
meta_wayland_surface_role_cursor_set_renderer (cursor_role,
cursor_renderer);
meta_wayland_surface_role_cursor_set_hotspot (cursor_role,
hot_x, hot_y);
}
meta_wayland_pointer_set_cursor_surface (pointer, surface);
}
static void
pointer_release (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static const struct wl_pointer_interface pointer_interface = {
pointer_set_cursor,
pointer_release,
};
void
meta_wayland_pointer_create_new_resource (MetaWaylandPointer *pointer,
struct wl_client *client,
struct wl_resource *seat_resource,
uint32_t id)
{
struct wl_resource *resource;
MetaWaylandPointerClient *pointer_client;
resource = wl_resource_create (client, &wl_pointer_interface,
wl_resource_get_version (seat_resource), id);
wl_resource_set_implementation (resource, &pointer_interface, pointer,
meta_wayland_pointer_unbind_pointer_client_resource);
pointer_client = meta_wayland_pointer_ensure_pointer_client (pointer, client);
wl_list_insert (&pointer_client->pointer_resources,
wl_resource_get_link (resource));
if (pointer->focus_client == pointer_client)
{
meta_wayland_pointer_send_enter (pointer, resource,
pointer->focus_serial,
pointer->focus_surface);
meta_wayland_pointer_send_frame (pointer, resource);
}
}
static gboolean
pointer_can_grab_surface (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
GList *l;
if (pointer->focus_surface == surface)
return TRUE;
for (l = surface->subsurfaces; l; l = l->next)
{
MetaWaylandSurface *subsurface = l->data;
if (pointer_can_grab_surface (pointer, subsurface))
return TRUE;
}
return FALSE;
}
gboolean
meta_wayland_pointer_can_grab_surface (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface,
uint32_t serial)
{
return (pointer->grab_serial == serial &&
pointer_can_grab_surface (pointer, surface));
}
gboolean
meta_wayland_pointer_can_popup (MetaWaylandPointer *pointer, uint32_t serial)
{
return pointer->grab_serial == serial;
}
MetaWaylandSurface *
meta_wayland_pointer_get_top_popup (MetaWaylandPointer *pointer)
{
MetaWaylandPopupGrab *grab;
if (!meta_wayland_pointer_grab_is_popup_grab (pointer->grab))
return NULL;
grab = (MetaWaylandPopupGrab*)pointer->grab;
return meta_wayland_popup_grab_get_top_popup(grab);
}
static void
relative_pointer_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static const struct zwp_relative_pointer_v1_interface relative_pointer_interface = {
relative_pointer_destroy
};
static void
relative_pointer_manager_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
relative_pointer_manager_get_relative_pointer (struct wl_client *client,
struct wl_resource *manager_resource,
uint32_t id,
struct wl_resource *pointer_resource)
{
MetaWaylandPointer *pointer = wl_resource_get_user_data (pointer_resource);
struct wl_resource *resource;
MetaWaylandPointerClient *pointer_client;
resource = wl_resource_create (client, &zwp_relative_pointer_v1_interface,
wl_resource_get_version (manager_resource),
id);
if (!resource)
{
wl_client_post_no_memory (client);
return;
}
wl_resource_set_implementation (resource, &relative_pointer_interface,
pointer,
meta_wayland_pointer_unbind_pointer_client_resource);
pointer_client = meta_wayland_pointer_ensure_pointer_client (pointer, client);
wl_list_insert (&pointer_client->relative_pointer_resources,
wl_resource_get_link (resource));
}
static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager = {
relative_pointer_manager_destroy,
relative_pointer_manager_get_relative_pointer,
};
static void
bind_relative_pointer_manager (struct wl_client *client,
void *data,
uint32_t version,
uint32_t id)
{
MetaWaylandCompositor *compositor = data;
struct wl_resource *resource;
resource = wl_resource_create (client,
&zwp_relative_pointer_manager_v1_interface,
1, id);
if (version != 1)
wl_resource_post_error (resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"bound invalid version %u of "
"wp_relative_pointer_manager",
version);
wl_resource_set_implementation (resource, &relative_pointer_manager,
compositor,
NULL);
}
void
meta_wayland_relative_pointer_init (MetaWaylandCompositor *compositor)
{
/* Relative pointer events are currently only supported by the native backend
* so lets just advertise the extension when the native backend is used.
*/
#ifdef HAVE_NATIVE_BACKEND
if (!META_IS_BACKEND_NATIVE (meta_get_backend ()))
return;
#else
return;
#endif
if (!wl_global_create (compositor->wayland_display,
&zwp_relative_pointer_manager_v1_interface, 1,
compositor, bind_relative_pointer_manager))
g_error ("Could not create relative pointer manager global");
}
MetaWaylandSeat *
meta_wayland_pointer_get_seat (MetaWaylandPointer *pointer)
{
MetaWaylandInputDevice *input_device = META_WAYLAND_INPUT_DEVICE (pointer);
return meta_wayland_input_device_get_seat (input_device);
}
static void
meta_wayland_pointer_init (MetaWaylandPointer *pointer)
{
pointer->default_grab.interface = &default_pointer_grab_interface;
pointer->default_grab.pointer = pointer;
pointer->grab = &pointer->default_grab;
}
static void
meta_wayland_pointer_class_init (MetaWaylandPointerClass *klass)
{
signals[FOCUS_SURFACE_CHANGED] = g_signal_new ("focus-surface-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
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