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bf7c34507d
mutter/src/wayland/meta-wayland.c
Jonas Ådahl bf7c34507d wayland/output: Make each wl_output correspond to one monitor 
This is more in line with the protocol, and allows us to remove some
awkward code that tries to "combine" different metadata from different
monitors into one, which sometimes meant picking an arbitrary "main"
monitor, or "and" metadata together to find a common ground.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1712>
2021-08-22 16:40:42 +00:00

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/*
* Wayland Support
*
* Copyright (C) 2012,2013 Intel Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "config.h"
#include "wayland/meta-wayland.h"
#include <sys/time.h>
#include <string.h>
#include <stdlib.h>
#include <wayland-server.h>
#include "clutter/clutter.h"
#include "cogl/cogl-egl.h"
#include "compositor/meta-surface-actor-wayland.h"
#include "core/meta-context-private.h"
#include "wayland/meta-wayland-activation.h"
#include "wayland/meta-wayland-buffer.h"
#include "wayland/meta-wayland-data-device.h"
#include "wayland/meta-wayland-dma-buf.h"
#include "wayland/meta-wayland-egl-stream.h"
#include "wayland/meta-wayland-inhibit-shortcuts-dialog.h"
#include "wayland/meta-wayland-inhibit-shortcuts.h"
#include "wayland/meta-wayland-outputs.h"
#include "wayland/meta-wayland-presentation-time-private.h"
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-wayland-region.h"
#include "wayland/meta-wayland-seat.h"
#include "wayland/meta-wayland-subsurface.h"
#include "wayland/meta-wayland-tablet-manager.h"
#include "wayland/meta-wayland-xdg-foreign.h"
#include "wayland/meta-xwayland-grab-keyboard.h"
#include "wayland/meta-xwayland-private.h"
#include "wayland/meta-xwayland.h"
static char *_display_name_override;
G_DEFINE_TYPE (MetaWaylandCompositor, meta_wayland_compositor, G_TYPE_OBJECT)
MetaWaylandCompositor *
meta_wayland_compositor_get_default (void)
{
MetaBackend *backend;
MetaContext *context;
MetaWaylandCompositor *wayland_compositor;
backend = meta_get_backend ();
context = meta_backend_get_context (backend);
wayland_compositor = meta_context_get_wayland_compositor (context);
g_assert (wayland_compositor);
return wayland_compositor;
}
typedef struct
{
GSource source;
struct wl_display *display;
} WaylandEventSource;
static gboolean
wayland_event_source_prepare (GSource *base,
int *timeout)
{
WaylandEventSource *source = (WaylandEventSource *)base;
*timeout = -1;
wl_display_flush_clients (source->display);
return FALSE;
}
static gboolean
wayland_event_source_dispatch (GSource *base,
GSourceFunc callback,
void *data)
{
WaylandEventSource *source = (WaylandEventSource *)base;
struct wl_event_loop *loop = wl_display_get_event_loop (source->display);
wl_event_loop_dispatch (loop, 0);
return TRUE;
}
static GSourceFuncs wayland_event_source_funcs =
{
wayland_event_source_prepare,
NULL,
wayland_event_source_dispatch,
NULL
};
static GSource *
wayland_event_source_new (struct wl_display *display)
{
WaylandEventSource *source;
struct wl_event_loop *loop = wl_display_get_event_loop (display);
source = (WaylandEventSource *) g_source_new (&wayland_event_source_funcs,
sizeof (WaylandEventSource));
source->display = display;
g_source_add_unix_fd (&source->source,
wl_event_loop_get_fd (loop),
G_IO_IN | G_IO_ERR);
return &source->source;
}
void
meta_wayland_compositor_set_input_focus (MetaWaylandCompositor *compositor,
MetaWindow *window)
{
MetaWaylandSurface *surface = window ? window->surface : NULL;
meta_wayland_seat_set_input_focus (compositor->seat, surface);
}
static void
wl_compositor_create_surface (struct wl_client *client,
struct wl_resource *resource,
uint32_t id)
{
MetaWaylandCompositor *compositor = wl_resource_get_user_data (resource);
meta_wayland_surface_create (compositor, client, resource, id);
}
static void
wl_compositor_create_region (struct wl_client *client,
struct wl_resource *resource,
uint32_t id)
{
MetaWaylandCompositor *compositor = wl_resource_get_user_data (resource);
meta_wayland_region_create (compositor, client, resource, id);
}
static const struct wl_compositor_interface meta_wayland_wl_compositor_interface = {
wl_compositor_create_surface,
wl_compositor_create_region
};
static void
compositor_bind (struct wl_client *client,
void *data,
uint32_t version,
uint32_t id)
{
MetaWaylandCompositor *compositor = data;
struct wl_resource *resource;
resource = wl_resource_create (client, &wl_compositor_interface, version, id);
wl_resource_set_implementation (resource,
&meta_wayland_wl_compositor_interface,
compositor, NULL);
}
/**
* meta_wayland_compositor_update:
* @compositor: the #MetaWaylandCompositor instance
* @event: the #ClutterEvent used to update @seat's state
*
* This is used to update display server state like updating cursor
* position and keeping track of buttons and keys pressed. It must be
* called for all input events coming from the underlying devices.
*/
void
meta_wayland_compositor_update (MetaWaylandCompositor *compositor,
const ClutterEvent *event)
{
if (meta_wayland_tablet_manager_consumes_event (compositor->tablet_manager, event))
meta_wayland_tablet_manager_update (compositor->tablet_manager, event);
else
meta_wayland_seat_update (compositor->seat, event);
}
static void
on_after_update (ClutterStage *stage,
ClutterStageView *stage_view,
MetaWaylandCompositor *compositor)
{
GList *l;
int64_t now_us;
now_us = g_get_monotonic_time ();
l = compositor->frame_callback_surfaces;
while (l)
{
GList *l_cur = l;
MetaWaylandSurface *surface = l->data;
MetaSurfaceActor *actor;
MetaWaylandActorSurface *actor_surface;
ClutterStageView *surface_primary_view;
l = l->next;
actor = meta_wayland_surface_get_actor (surface);
if (!actor)
continue;
surface_primary_view =
meta_surface_actor_wayland_get_current_primary_view (actor, stage);
if (stage_view != surface_primary_view)
continue;
actor_surface = META_WAYLAND_ACTOR_SURFACE (surface->role);
meta_wayland_actor_surface_emit_frame_callbacks (actor_surface,
now_us / 1000);
compositor->frame_callback_surfaces =
g_list_delete_link (compositor->frame_callback_surfaces, l_cur);
}
}
static MetaWaylandOutput *
get_output_for_stage_view (MetaWaylandCompositor *compositor,
ClutterStageView *stage_view)
{
MetaCrtc *crtc;
MetaOutput *output;
MetaMonitor *monitor;
crtc = meta_renderer_view_get_crtc (META_RENDERER_VIEW (stage_view));
/*
* All outputs occupy the same region of the screen, as their contents are
* the same, so pick the first one.
*/
output = meta_crtc_get_outputs (crtc)->data;
monitor = meta_output_get_monitor (output);
return g_hash_table_lookup (compositor->outputs,
meta_monitor_get_spec (monitor));
}
static void
on_presented (ClutterStage *stage,
ClutterStageView *stage_view,
ClutterFrameInfo *frame_info,
MetaWaylandCompositor *compositor)
{
MetaWaylandPresentationFeedback *feedback, *next;
struct wl_list *feedbacks;
MetaWaylandOutput *output;
feedbacks =
meta_wayland_presentation_time_ensure_feedbacks (&compositor->presentation_time,
stage_view);
output = get_output_for_stage_view (compositor, stage_view);
wl_list_for_each_safe (feedback, next, feedbacks, link)
{
meta_wayland_presentation_feedback_present (feedback,
frame_info,
output);
}
}
/**
* meta_wayland_compositor_handle_event:
* @compositor: the #MetaWaylandCompositor instance
* @event: the #ClutterEvent to be sent
*
* This method sends events to the focused wayland client, if any.
*
* Return value: whether @event was sent to a wayland client.
*/
gboolean
meta_wayland_compositor_handle_event (MetaWaylandCompositor *compositor,
const ClutterEvent *event)
{
if (meta_wayland_tablet_manager_handle_event (compositor->tablet_manager,
event))
return TRUE;
return meta_wayland_seat_handle_event (compositor->seat, event);
}
/* meta_wayland_compositor_update_key_state:
* @compositor: the #MetaWaylandCompositor
* @key_vector: bit vector of key states
* @key_vector_len: length of @key_vector
* @offset: the key for the first evdev keycode is found at this offset in @key_vector
*
* This function is used to resynchronize the key state that Mutter
* is tracking with the actual keyboard state. This is useful, for example,
* to handle changes in key state when a nested compositor doesn't
* have focus. We need to fix up the XKB modifier tracking and deliver
* any modifier changes to clients.
*/
void
meta_wayland_compositor_update_key_state (MetaWaylandCompositor *compositor,
char *key_vector,
int key_vector_len,
int offset)
{
meta_wayland_keyboard_update_key_state (compositor->seat->keyboard,
key_vector, key_vector_len, offset);
}
void
meta_wayland_compositor_add_frame_callback_surface (MetaWaylandCompositor *compositor,
MetaWaylandSurface *surface)
{
if (g_list_find (compositor->frame_callback_surfaces, surface))
return;
compositor->frame_callback_surfaces =
g_list_prepend (compositor->frame_callback_surfaces, surface);
}
void
meta_wayland_compositor_remove_frame_callback_surface (MetaWaylandCompositor *compositor,
MetaWaylandSurface *surface)
{
compositor->frame_callback_surfaces =
g_list_remove (compositor->frame_callback_surfaces, surface);
}
void
meta_wayland_compositor_add_presentation_feedback_surface (MetaWaylandCompositor *compositor,
MetaWaylandSurface *surface)
{
if (g_list_find (compositor->presentation_time.feedback_surfaces, surface))
return;
compositor->presentation_time.feedback_surfaces =
g_list_prepend (compositor->presentation_time.feedback_surfaces, surface);
}
void
meta_wayland_compositor_remove_presentation_feedback_surface (MetaWaylandCompositor *compositor,
MetaWaylandSurface *surface)
{
compositor->presentation_time.feedback_surfaces =
g_list_remove (compositor->presentation_time.feedback_surfaces, surface);
}
static void
set_gnome_env (const char *name,
const char *value)
{
GDBusConnection *session_bus;
GError *error = NULL;
g_autoptr (GVariant) result = NULL;
setenv (name, value, TRUE);
session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert (session_bus);
result = g_dbus_connection_call_sync (session_bus,
"org.gnome.SessionManager",
"/org/gnome/SessionManager",
"org.gnome.SessionManager",
"Setenv",
g_variant_new ("(ss)", name, value),
NULL,
G_DBUS_CALL_FLAGS_NO_AUTO_START,
-1, NULL, &error);
if (error)
{
char *remote_error;
remote_error = g_dbus_error_get_remote_error (error);
if (g_strcmp0 (remote_error, "org.gnome.SessionManager.NotInInitialization") != 0)
{
meta_warning ("Failed to set environment variable %s for gnome-session: %s",
name, error->message);
}
g_free (remote_error);
g_error_free (error);
}
}
static void meta_wayland_log_func (const char *, va_list) G_GNUC_PRINTF (1, 0);
static void
meta_wayland_log_func (const char *fmt,
va_list arg)
{
char *str = g_strdup_vprintf (fmt, arg);
g_warning ("WL: %s", str);
g_free (str);
}
void
meta_wayland_compositor_prepare_shutdown (MetaWaylandCompositor *compositor)
{
meta_xwayland_shutdown (&compositor->xwayland_manager);
if (compositor->wayland_display)
wl_display_destroy_clients (compositor->wayland_display);
}
static void
meta_wayland_compositor_finalize (GObject *object)
{
MetaWaylandCompositor *compositor = META_WAYLAND_COMPOSITOR (object);
g_clear_pointer (&compositor->seat, meta_wayland_seat_free);
g_clear_pointer (&compositor->display_name, g_free);
g_clear_pointer (&compositor->wayland_display, wl_display_destroy);
G_OBJECT_CLASS (meta_wayland_compositor_parent_class)->finalize (object);
}
static void
meta_wayland_compositor_init (MetaWaylandCompositor *compositor)
{
compositor->scheduled_surface_associations = g_hash_table_new (NULL, NULL);
wl_log_set_handler_server (meta_wayland_log_func);
compositor->wayland_display = wl_display_create ();
if (compositor->wayland_display == NULL)
g_error ("Failed to create the global wl_display");
}
static void
meta_wayland_compositor_class_init (MetaWaylandCompositorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_wayland_compositor_finalize;
}
static bool
meta_xwayland_global_filter (const struct wl_client *client,
const struct wl_global *global,
void *data)
{
MetaWaylandCompositor *compositor = (MetaWaylandCompositor *) data;
MetaXWaylandManager *xwayland_manager = &compositor->xwayland_manager;
/* Keyboard grabbing protocol is for Xwayland only */
if (client != xwayland_manager->client)
return (wl_global_get_interface (global) !=
&zwp_xwayland_keyboard_grab_manager_v1_interface);
/* All others are visible to all clients */
return true;
}
void
meta_wayland_override_display_name (const char *display_name)
{
g_clear_pointer (&_display_name_override, g_free);
_display_name_override = g_strdup (display_name);
}
static const char *
meta_wayland_get_xwayland_auth_file (MetaWaylandCompositor *compositor)
{
return compositor->xwayland_manager.auth_file;
}
static void
meta_wayland_init_egl (MetaWaylandCompositor *compositor)
{
MetaBackend *backend = meta_get_backend ();
MetaEgl *egl = meta_backend_get_egl (backend);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
g_autoptr (GError) error = NULL;
if (!meta_egl_has_extensions (egl, egl_display, NULL,
"EGL_WL_bind_wayland_display",
NULL))
{
meta_topic (META_DEBUG_WAYLAND,
"Not binding Wayland display, missing extension");
return;
}
meta_topic (META_DEBUG_WAYLAND,
"Binding Wayland EGL display");
if (!meta_egl_bind_wayland_display (egl,
egl_display,
compositor->wayland_display,
&error))
g_warning ("Failed to bind Wayland display: %s", error->message);
}
MetaWaylandCompositor *
meta_wayland_compositor_new (MetaContext *context)
{
MetaBackend *backend = meta_context_get_backend (context);
ClutterActor *stage = meta_backend_get_stage (backend);
MetaWaylandCompositor *compositor;
GSource *wayland_event_source;
MetaX11DisplayPolicy x11_display_policy;
compositor = g_object_new (META_TYPE_WAYLAND_COMPOSITOR, NULL);
compositor->context = context;
wayland_event_source = wayland_event_source_new (compositor->wayland_display);
/* XXX: Here we are setting the wayland event source to have a
* slightly lower priority than the X event source, because we are
* much more likely to get confused being told about surface changes
* relating to X clients when we don't know what's happened to them
* according to the X protocol.
*/
g_source_set_priority (wayland_event_source, GDK_PRIORITY_EVENTS + 1);
g_source_attach (wayland_event_source, NULL);
g_signal_connect (stage, "after-update",
G_CALLBACK (on_after_update), compositor);
g_signal_connect (stage, "presented",
G_CALLBACK (on_presented), compositor);
if (!wl_global_create (compositor->wayland_display,
&wl_compositor_interface,
META_WL_COMPOSITOR_VERSION,
compositor, compositor_bind))
g_error ("Failed to register the global wl_compositor");
meta_wayland_init_egl (compositor);
meta_wayland_init_shm (compositor);
meta_wayland_outputs_init (compositor);
meta_wayland_data_device_manager_init (compositor);
meta_wayland_data_device_primary_manager_init (compositor);
meta_wayland_data_device_primary_legacy_manager_init (compositor);
meta_wayland_subsurfaces_init (compositor);
meta_wayland_shell_init (compositor);
meta_wayland_pointer_gestures_init (compositor);
meta_wayland_tablet_manager_init (compositor);
meta_wayland_seat_init (compositor);
meta_wayland_relative_pointer_init (compositor);
meta_wayland_pointer_constraints_init (compositor);
meta_wayland_xdg_foreign_init (compositor);
meta_wayland_dma_buf_init (compositor);
meta_wayland_keyboard_shortcuts_inhibit_init (compositor);
meta_wayland_surface_inhibit_shortcuts_dialog_init ();
meta_wayland_text_input_init (compositor);
meta_wayland_gtk_text_input_init (compositor);
meta_wayland_init_presentation_time (compositor);
meta_wayland_activation_init (compositor);
/* Xwayland specific protocol, needs to be filtered out for all other clients */
if (meta_xwayland_grab_keyboard_init (compositor))
wl_display_set_global_filter (compositor->wayland_display,
meta_xwayland_global_filter,
compositor);
#ifdef HAVE_WAYLAND_EGLSTREAM
meta_wayland_eglstream_controller_init (compositor);
#endif
x11_display_policy =
meta_context_get_x11_display_policy (compositor->context);
if (x11_display_policy != META_X11_DISPLAY_POLICY_DISABLED)
{
g_autoptr (GError) error = NULL;
if (!meta_xwayland_init (&compositor->xwayland_manager,
compositor,
compositor->wayland_display,
&error))
g_error ("Failed to start X Wayland: %s", error->message);
}
if (_display_name_override)
{
compositor->display_name = g_steal_pointer (&_display_name_override);
if (wl_display_add_socket (compositor->wayland_display,
compositor->display_name) != 0)
g_error ("Failed to create_socket");
}
else
{
const char *display_name;
display_name = wl_display_add_socket_auto (compositor->wayland_display);
if (!display_name)
g_error ("Failed to create socket");
compositor->display_name = g_strdup (display_name);
}
g_message ("Using Wayland display name '%s'", compositor->display_name);
if (x11_display_policy != META_X11_DISPLAY_POLICY_DISABLED)
{
set_gnome_env ("GNOME_SETUP_DISPLAY", compositor->xwayland_manager.private_connection.name);
set_gnome_env ("DISPLAY", compositor->xwayland_manager.public_connection.name);
set_gnome_env ("XAUTHORITY", meta_wayland_get_xwayland_auth_file (compositor));
}
set_gnome_env ("WAYLAND_DISPLAY", meta_wayland_get_wayland_display_name (compositor));
return compositor;
}
const char *
meta_wayland_get_wayland_display_name (MetaWaylandCompositor *compositor)
{
return compositor->display_name;
}
const char *
meta_wayland_get_public_xwayland_display_name (MetaWaylandCompositor *compositor)
{
return compositor->xwayland_manager.public_connection.name;
}
const char *
meta_wayland_get_private_xwayland_display_name (MetaWaylandCompositor *compositor)
{
return compositor->xwayland_manager.private_connection.name;
}
void
meta_wayland_compositor_restore_shortcuts (MetaWaylandCompositor *compositor,
ClutterInputDevice *source)
{
MetaWaylandKeyboard *keyboard;
/* Clutter is not multi-seat aware yet, use the default seat instead */
keyboard = compositor->seat->keyboard;
if (!keyboard || !keyboard->focus_surface)
return;
if (!meta_wayland_surface_is_shortcuts_inhibited (keyboard->focus_surface,
compositor->seat))
return;
meta_wayland_surface_restore_shortcuts (keyboard->focus_surface,
compositor->seat);
}
gboolean
meta_wayland_compositor_is_shortcuts_inhibited (MetaWaylandCompositor *compositor,
ClutterInputDevice *source)
{
MetaWaylandKeyboard *keyboard;
/* Clutter is not multi-seat aware yet, use the default seat instead */
keyboard = compositor->seat->keyboard;
if (keyboard && keyboard->focus_surface != NULL)
return meta_wayland_surface_is_shortcuts_inhibited (keyboard->focus_surface,
compositor->seat);
return FALSE;
}
void
meta_wayland_compositor_flush_clients (MetaWaylandCompositor *compositor)
{
wl_display_flush_clients (compositor->wayland_display);
}
static void on_scheduled_association_unmanaged (MetaWindow *window,
gpointer user_data);
static void
meta_wayland_compositor_remove_surface_association (MetaWaylandCompositor *compositor,
int id)
{
MetaWindow *window;
window = g_hash_table_lookup (compositor->scheduled_surface_associations,
GINT_TO_POINTER (id));
if (window)
{
g_signal_handlers_disconnect_by_func (window,
on_scheduled_association_unmanaged,
GINT_TO_POINTER (id));
g_hash_table_remove (compositor->scheduled_surface_associations,
GINT_TO_POINTER (id));
}
}
static void
on_scheduled_association_unmanaged (MetaWindow *window,
gpointer user_data)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
meta_wayland_compositor_remove_surface_association (compositor,
GPOINTER_TO_INT (user_data));
}
void
meta_wayland_compositor_schedule_surface_association (MetaWaylandCompositor *compositor,
int id,
MetaWindow *window)
{
g_signal_connect (window, "unmanaged",
G_CALLBACK (on_scheduled_association_unmanaged),
GINT_TO_POINTER (id));
g_hash_table_insert (compositor->scheduled_surface_associations,
GINT_TO_POINTER (id), window);
}
void
meta_wayland_compositor_notify_surface_id (MetaWaylandCompositor *compositor,
int id,
MetaWaylandSurface *surface)
{
MetaWindow *window;
window = g_hash_table_lookup (compositor->scheduled_surface_associations,
GINT_TO_POINTER (id));
if (window)
{
meta_xwayland_associate_window_with_surface (window, surface);
meta_wayland_compositor_remove_surface_association (compositor, id);
}
}
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