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mutter/src/wayland/meta-wayland.c
Giovanni Campagna 776a86a65f wayland: heavily refactor pointer grabs 
Grabs are now slice allocated structures that are handled by
whoever starts the grab. They contain a generic grab structure
with the interface and a backpointer to the MetaWaylandPointer.
The grab interface has been changed to pass full clutter events,
which allowed to remove the confusion between grab->focus and
pointer->focus. Invidual grabs are now required to keep their
focus, and choose whoever gets the events.

https://bugzilla.gnome.org/show_bug.cgi?id=707863
2013-09-16 14:51:12 +02:00

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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 <clutter/clutter.h>
#include <clutter/wayland/clutter-wayland-compositor.h>
#include <clutter/wayland/clutter-wayland-surface.h>
#include <glib.h>
#include <sys/time.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
#include <wayland-server.h>
#include "meta-wayland-private.h"
#include "meta-xwayland-private.h"
#include "meta-wayland-stage.h"
#include "meta-window-actor-private.h"
#include "meta-wayland-seat.h"
#include "meta-wayland-keyboard.h"
#include "meta-wayland-pointer.h"
#include "meta-wayland-data-device.h"
#include "meta-cursor-tracker-private.h"
#include "display-private.h"
#include "window-private.h"
#include <meta/types.h>
#include <meta/main.h>
#include "frame.h"
#include "meta-idle-monitor-private.h"
#include "meta-weston-launch.h"
#include "monitor-private.h"
static MetaWaylandCompositor _meta_wayland_compositor;
MetaWaylandCompositor *
meta_wayland_compositor_get_default (void)
{
return &_meta_wayland_compositor;
}
static guint32
get_time (void)
{
struct timeval tv;
gettimeofday (&tv, NULL);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
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_check (GSource *base)
{
WaylandEventSource *source = (WaylandEventSource *)base;
return source->pfd.revents;
}
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,
wayland_event_source_check,
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;
source->pfd.fd = wl_event_loop_get_fd (loop);
source->pfd.events = G_IO_IN | G_IO_ERR;
g_source_add_poll (&source->source, &source->pfd);
return &source->source;
}
static void
meta_wayland_buffer_destroy_handler (struct wl_listener *listener,
void *data)
{
MetaWaylandBuffer *buffer =
wl_container_of (listener, buffer, destroy_listener);
wl_signal_emit (&buffer->destroy_signal, buffer);
g_slice_free (MetaWaylandBuffer, buffer);
}
MetaWaylandBuffer *
meta_wayland_buffer_from_resource (struct wl_resource *resource)
{
MetaWaylandBuffer *buffer;
struct wl_listener *listener;
listener =
wl_resource_get_destroy_listener (resource,
meta_wayland_buffer_destroy_handler);
if (listener)
{
buffer = wl_container_of (listener, buffer, destroy_listener);
}
else
{
buffer = g_slice_new0 (MetaWaylandBuffer);
buffer->resource = resource;
wl_signal_init (&buffer->destroy_signal);
buffer->destroy_listener.notify = meta_wayland_buffer_destroy_handler;
wl_resource_add_destroy_listener (resource, &buffer->destroy_listener);
}
return buffer;
}
static void
meta_wayland_buffer_reference_handle_destroy (struct wl_listener *listener,
void *data)
{
MetaWaylandBufferReference *ref =
wl_container_of (listener, ref, destroy_listener);
g_assert (data == ref->buffer);
ref->buffer = NULL;
}
void
meta_wayland_buffer_reference (MetaWaylandBufferReference *ref,
MetaWaylandBuffer *buffer)
{
if (ref->buffer && buffer != ref->buffer)
{
ref->buffer->busy_count--;
if (ref->buffer->busy_count == 0)
{
g_clear_pointer (&ref->buffer->texture, cogl_object_unref);
g_assert (wl_resource_get_client (ref->buffer->resource));
wl_resource_queue_event (ref->buffer->resource, WL_BUFFER_RELEASE);
}
wl_list_remove (&ref->destroy_listener.link);
}
if (buffer && buffer != ref->buffer)
{
buffer->busy_count++;
wl_signal_add (&buffer->destroy_signal, &ref->destroy_listener);
}
ref->buffer = buffer;
ref->destroy_listener.notify = meta_wayland_buffer_reference_handle_destroy;
}
void
meta_wayland_compositor_set_input_focus (MetaWaylandCompositor *compositor,
MetaWindow *window)
{
MetaWaylandSurface *surface = window ? window->surface : NULL;
meta_wayland_keyboard_set_focus (&compositor->seat->keyboard,
surface);
meta_wayland_data_device_set_keyboard_focus (compositor->seat);
}
void
meta_wayland_compositor_repick (MetaWaylandCompositor *compositor)
{
meta_wayland_seat_repick (compositor->seat, NULL);
}
static void
meta_wayland_compositor_create_surface (struct wl_client *wayland_client,
struct wl_resource *wayland_compositor_resource,
guint32 id)
{
MetaWaylandCompositor *compositor =
wl_resource_get_user_data (wayland_compositor_resource);
MetaWaylandSurface *surface;
surface = meta_wayland_surface_create (compositor,
wayland_client, id,
MIN (META_WL_SURFACE_VERSION,
wl_resource_get_version (wayland_compositor_resource)));
compositor->surfaces = g_list_prepend (compositor->surfaces, surface);
}
static void
meta_wayland_region_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
meta_wayland_region_add (struct wl_client *client,
struct wl_resource *resource,
gint32 x,
gint32 y,
gint32 width,
gint32 height)
{
MetaWaylandRegion *region = wl_resource_get_user_data (resource);
cairo_rectangle_int_t rectangle = { x, y, width, height };
cairo_region_union_rectangle (region->region, &rectangle);
}
static void
meta_wayland_region_subtract (struct wl_client *client,
struct wl_resource *resource,
gint32 x,
gint32 y,
gint32 width,
gint32 height)
{
MetaWaylandRegion *region = wl_resource_get_user_data (resource);
cairo_rectangle_int_t rectangle = { x, y, width, height };
cairo_region_subtract_rectangle (region->region, &rectangle);
}
const struct wl_region_interface meta_wayland_region_interface = {
meta_wayland_region_destroy,
meta_wayland_region_add,
meta_wayland_region_subtract
};
static void
meta_wayland_region_resource_destroy_cb (struct wl_resource *resource)
{
MetaWaylandRegion *region = wl_resource_get_user_data (resource);
cairo_region_destroy (region->region);
g_slice_free (MetaWaylandRegion, region);
}
static void
meta_wayland_compositor_create_region (struct wl_client *wayland_client,
struct wl_resource *compositor_resource,
uint32_t id)
{
MetaWaylandRegion *region = g_slice_new0 (MetaWaylandRegion);
region->resource = wl_resource_create (wayland_client,
&wl_region_interface,
MIN (META_WL_REGION_VERSION,
wl_resource_get_version (compositor_resource)),
id);
wl_resource_set_implementation (region->resource,
&meta_wayland_region_interface, region,
meta_wayland_region_resource_destroy_cb);
region->region = cairo_region_create ();
}
typedef struct {
MetaOutput *output;
struct wl_global *global;
int x, y;
enum wl_output_transform transform;
GList *resources;
} MetaWaylandOutput;
static void
output_resource_destroy (struct wl_resource *res)
{
MetaWaylandOutput *wayland_output;
wayland_output = wl_resource_get_user_data (res);
wayland_output->resources = g_list_remove (wayland_output->resources, res);
}
static void
bind_output (struct wl_client *client,
void *data,
guint32 version,
guint32 id)
{
MetaWaylandOutput *wayland_output = data;
MetaOutput *output = wayland_output->output;
struct wl_resource *resource;
guint mode_flags;
resource = wl_resource_create (client, &wl_output_interface,
MIN (META_WL_OUTPUT_VERSION, version), id);
wayland_output->resources = g_list_prepend (wayland_output->resources, resource);
wl_resource_set_user_data (resource, wayland_output);
wl_resource_set_destructor (resource, output_resource_destroy);
meta_verbose ("Binding output %p/%s (%u, %u, %u, %u) x %f\n",
output, output->name,
output->crtc->rect.x, output->crtc->rect.y,
output->crtc->rect.width, output->crtc->rect.height,
output->crtc->current_mode->refresh_rate);
wl_resource_post_event (resource,
WL_OUTPUT_GEOMETRY,
(int)output->crtc->rect.x,
(int)output->crtc->rect.y,
output->width_mm,
output->height_mm,
/* Cogl values reflect XRandR values,
and so does wayland */
output->subpixel_order,
output->vendor,
output->product,
output->crtc->transform);
g_assert (output->crtc->current_mode != NULL);
mode_flags = WL_OUTPUT_MODE_CURRENT;
if (output->crtc->current_mode == output->preferred_mode)
mode_flags |= WL_OUTPUT_MODE_PREFERRED;
wl_resource_post_event (resource,
WL_OUTPUT_MODE,
mode_flags,
(int)output->crtc->current_mode->width,
(int)output->crtc->current_mode->height,
(int)output->crtc->current_mode->refresh_rate);
if (version >= META_WL_OUTPUT_HAS_DONE)
wl_resource_post_event (resource,
WL_OUTPUT_DONE);
}
static void
wayland_output_destroy_notify (gpointer data)
{
MetaWaylandOutput *wayland_output = data;
GList *resources;
/* Make sure the destructors don't mess with the list */
resources = wayland_output->resources;
wayland_output->resources = NULL;
wl_global_destroy (wayland_output->global);
g_list_free (resources);
g_slice_free (MetaWaylandOutput, wayland_output);
}
static void
wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
MetaOutput *output)
{
GList *iter;
guint mode_flags;
g_assert (output->crtc->current_mode != NULL);
mode_flags = WL_OUTPUT_MODE_CURRENT;
if (output->crtc->current_mode == output->preferred_mode)
mode_flags |= WL_OUTPUT_MODE_PREFERRED;
for (iter = wayland_output->resources; iter; iter = iter->next)
{
struct wl_resource *resource = iter->data;
if (wayland_output->x != output->crtc->rect.x ||
wayland_output->y != output->crtc->rect.y ||
wayland_output->transform != output->crtc->transform)
{
wl_resource_post_event (resource,
WL_OUTPUT_GEOMETRY,
(int)output->crtc->rect.x,
(int)output->crtc->rect.y,
output->width_mm,
output->height_mm,
output->subpixel_order,
output->vendor,
output->product,
output->crtc->transform);
}
wl_resource_post_event (resource,
WL_OUTPUT_MODE,
mode_flags,
(int)output->crtc->current_mode->width,
(int)output->crtc->current_mode->height,
(int)output->crtc->current_mode->refresh_rate);
}
/* It's very important that we change the output pointer here, as
the old structure is about to be freed by MetaMonitorManager */
wayland_output->output = output;
wayland_output->x = output->crtc->rect.x;
wayland_output->y = output->crtc->rect.y;
wayland_output->transform = output->crtc->transform;
}
static GHashTable *
meta_wayland_compositor_update_outputs (MetaWaylandCompositor *compositor,
MetaMonitorManager *monitors)
{
MetaOutput *outputs;
unsigned int i, n_outputs;
GHashTable *new_table;
outputs = meta_monitor_manager_get_outputs (monitors, &n_outputs);
new_table = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify);
for (i = 0; i < n_outputs; i++)
{
MetaOutput *output = &outputs[i];
MetaWaylandOutput *wayland_output;
/* wayland does not expose disabled outputs */
if (output->crtc == NULL)
{
g_hash_table_remove (compositor->outputs, GSIZE_TO_POINTER (output->output_id));
continue;
}
wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (output->output_id));
if (wayland_output)
{
g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (output->output_id));
}
else
{
wayland_output = g_slice_new0 (MetaWaylandOutput);
wayland_output->global = wl_global_create (compositor->wayland_display,
&wl_output_interface,
META_WL_OUTPUT_VERSION,
wayland_output, bind_output);
}
wayland_output_update_for_output (wayland_output, output);
g_hash_table_insert (new_table, GSIZE_TO_POINTER (output->output_id), wayland_output);
}
g_hash_table_destroy (compositor->outputs);
return new_table;
}
const static struct wl_compositor_interface meta_wayland_compositor_interface = {
meta_wayland_compositor_create_surface,
meta_wayland_compositor_create_region
};
static void
paint_finished_cb (ClutterActor *self, void *user_data)
{
MetaWaylandCompositor *compositor = user_data;
while (!wl_list_empty (&compositor->frame_callbacks))
{
MetaWaylandFrameCallback *callback =
wl_container_of (compositor->frame_callbacks.next, callback, link);
wl_resource_post_event (callback->resource,
WL_CALLBACK_DONE, get_time ());
wl_resource_destroy (callback->resource);
}
}
static void
compositor_bind (struct wl_client *client,
void *data,
guint32 version,
guint32 id)
{
MetaWaylandCompositor *compositor = data;
struct wl_resource *resource;
resource = wl_resource_create (client, &wl_compositor_interface,
MIN (META_WL_COMPOSITOR_VERSION, version), id);
wl_resource_set_implementation (resource, &meta_wayland_compositor_interface, compositor, NULL);
}
static void
stage_destroy_cb (void)
{
meta_quit (META_EXIT_SUCCESS);
}
#define N_BUTTONS 5
static void
synthesize_motion_event (MetaWaylandCompositor *compositor,
const ClutterEvent *event)
{
/* We want to synthesize X events for mouse motion events so that we
don't have to rely on the X server's window position being
synched with the surface position. See the comment in
event_callback() in display.c */
MetaWaylandSeat *seat = compositor->seat;
MetaWaylandPointer *pointer = &seat->pointer;
MetaWaylandSurface *surface;
XGenericEventCookie generic_event;
XIDeviceEvent device_event;
unsigned char button_mask[(N_BUTTONS + 7) / 8] = { 0 };
MetaDisplay *display = meta_get_display ();
ClutterModifierType button_state;
int i;
generic_event.type = GenericEvent;
generic_event.serial = 0;
generic_event.send_event = False;
generic_event.display = display->xdisplay;
generic_event.extension = display->xinput_opcode;
generic_event.evtype = XI_Motion;
/* Mutter assumes the data for the event is already retrieved by GDK
* so we don't need the cookie */
generic_event.cookie = 0;
generic_event.data = &device_event;
memcpy (&device_event, &generic_event, sizeof (XGenericEvent));
device_event.time = clutter_event_get_time (event);
device_event.deviceid = clutter_event_get_device_id (event);
device_event.sourceid = 0; /* not used, not sure what this should be */
device_event.detail = 0;
device_event.root = DefaultRootWindow (display->xdisplay);
device_event.flags = 0 /* not used for motion events */;
if (compositor->implicit_grab_surface)
surface = compositor->implicit_grab_surface;
else
surface = pointer->current;
if (surface == pointer->current)
{
device_event.event_x = wl_fixed_to_int (pointer->current_x);
device_event.event_y = wl_fixed_to_int (pointer->current_y);
}
else if (surface && surface->window)
{
ClutterActor *window_actor =
CLUTTER_ACTOR (meta_window_get_compositor_private (surface->window));
if (window_actor)
{
float ax, ay;
clutter_actor_transform_stage_point (window_actor,
wl_fixed_to_double (pointer->x),
wl_fixed_to_double (pointer->y),
&ax, &ay);
device_event.event_x = ax;
device_event.event_y = ay;
}
else
{
device_event.event_x = wl_fixed_to_double (pointer->x);
device_event.event_y = wl_fixed_to_double (pointer->y);
}
}
else
{
device_event.event_x = wl_fixed_to_double (pointer->x);
device_event.event_y = wl_fixed_to_double (pointer->y);
}
if (surface && surface->window != NULL)
device_event.event = surface->window->xwindow;
else
device_event.event = device_event.root;
/* Mutter doesn't really know about the sub-windows. This assumes it
doesn't care either */
device_event.child = device_event.event;
device_event.root_x = wl_fixed_to_double (pointer->x);
device_event.root_y = wl_fixed_to_double (pointer->y);
clutter_event_get_state_full (event,
&button_state,
(ClutterModifierType*)&device_event.mods.base,
(ClutterModifierType*)&device_event.mods.latched,
(ClutterModifierType*)&device_event.mods.locked,
(ClutterModifierType*)&device_event.mods.effective);
device_event.mods.effective &= ~button_state;
memset (&device_event.group, 0, sizeof (device_event.group));
device_event.group.effective = (device_event.mods.effective >> 13) & 0x3;
for (i = 0; i < N_BUTTONS; i++)
if ((button_state & (CLUTTER_BUTTON1_MASK << i)))
XISetMask (button_mask, i + 1);
device_event.buttons.mask_len = N_BUTTONS + 1;
device_event.buttons.mask = button_mask;
device_event.valuators.mask_len = 0;
device_event.valuators.mask = NULL;
device_event.valuators.values = NULL;
meta_display_handle_event (display, (XEvent *) &generic_event);
}
static void
reset_idletimes (const ClutterEvent *event)
{
ClutterInputDevice *device, *source_device;
MetaIdleMonitor *core_monitor, *device_monitor;
int device_id;
device = clutter_event_get_device (event);
device_id = clutter_input_device_get_device_id (device);
core_monitor = meta_idle_monitor_get_core ();
device_monitor = meta_idle_monitor_get_for_device (device_id);
meta_idle_monitor_reset_idletime (core_monitor);
meta_idle_monitor_reset_idletime (device_monitor);
source_device = clutter_event_get_source_device (event);
if (source_device != device)
{
device_id = clutter_input_device_get_device_id (device);
device_monitor = meta_idle_monitor_get_for_device (device_id);
meta_idle_monitor_reset_idletime (device_monitor);
}
}
static gboolean
event_cb (ClutterActor *stage,
const ClutterEvent *event,
MetaWaylandCompositor *compositor)
{
MetaWaylandSeat *seat = compositor->seat;
MetaWaylandPointer *pointer = &seat->pointer;
MetaWaylandSurface *surface;
MetaDisplay *display;
reset_idletimes (event);
if (meta_wayland_seat_handle_event (compositor->seat, event))
return TRUE;
/* HACK: for now, the surfaces from Wayland clients aren't
integrated into Mutter's event handling and Mutter won't give them
focus on mouse clicks. As a hack to work around this we can just
give them input focus on mouse clicks so we can at least test the
keyboard support */
if (event->type == CLUTTER_BUTTON_PRESS)
{
surface = pointer->current;
if (surface && surface->window &&
surface->window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
{
MetaDisplay *display = meta_get_display ();
guint32 timestamp = meta_display_get_current_time_roundtrip (display);
meta_window_focus (surface->window, timestamp);
}
}
if (seat->cursor_tracker)
{
meta_cursor_tracker_update_position (seat->cursor_tracker,
wl_fixed_to_int (pointer->x),
wl_fixed_to_int (pointer->y));
if (pointer->current == NULL)
meta_cursor_tracker_revert_root (seat->cursor_tracker);
meta_cursor_tracker_queue_redraw (seat->cursor_tracker, stage);
}
display = meta_get_display ();
if (!display)
return FALSE;
switch (event->type)
{
case CLUTTER_BUTTON_PRESS:
if (compositor->implicit_grab_surface == NULL)
{
compositor->implicit_grab_button = event->button.button;
compositor->implicit_grab_surface = pointer->current;
}
return FALSE;
case CLUTTER_BUTTON_RELEASE:
if (event->type == CLUTTER_BUTTON_RELEASE &&
compositor->implicit_grab_surface &&
event->button.button == compositor->implicit_grab_button)
compositor->implicit_grab_surface = NULL;
return FALSE;
case CLUTTER_MOTION:
synthesize_motion_event (compositor, event);
return FALSE;
default:
return FALSE;
}
}
static gboolean
event_emission_hook_cb (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
MetaWaylandCompositor *compositor = data;
ClutterActor *actor;
ClutterEvent *event;
g_return_val_if_fail (n_param_values == 2, FALSE);
actor = g_value_get_object (param_values + 0);
event = g_value_get_boxed (param_values + 1);
if (actor == NULL)
return TRUE /* stay connected */;
/* If this event belongs to the corresponding grab for this event
* type then the captured-event signal won't be emitted so we have
* to manually forward it on */
switch (event->type)
{
/* Pointer events */
case CLUTTER_MOTION:
case CLUTTER_ENTER:
case CLUTTER_LEAVE:
case CLUTTER_BUTTON_PRESS:
case CLUTTER_BUTTON_RELEASE:
case CLUTTER_SCROLL:
if (actor == clutter_get_pointer_grab ())
event_cb (clutter_actor_get_stage (actor),
event,
compositor);
break;
/* Keyboard events */
case CLUTTER_KEY_PRESS:
case CLUTTER_KEY_RELEASE:
if (actor == clutter_get_keyboard_grab ())
event_cb (clutter_actor_get_stage (actor),
event,
compositor);
default:
break;
}
return TRUE /* stay connected */;
}
static void
on_monitors_changed (MetaMonitorManager *monitors,
MetaWaylandCompositor *compositor)
{
compositor->outputs = meta_wayland_compositor_update_outputs (compositor, monitors);
}
static void
set_gnome_env (const char *name,
const char *value)
{
GDBusConnection *session_bus;
GError *error;
setenv (name, value, TRUE);
session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
g_assert (session_bus);
error = NULL;
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_NONE,
-1, NULL, &error);
if (error)
{
meta_warning ("Failed to set environment variable %s for gnome-session: %s\n", name, error->message);
g_clear_error (&error);
}
}
void
meta_wayland_init (void)
{
MetaWaylandCompositor *compositor = &_meta_wayland_compositor;
guint event_signal;
MetaMonitorManager *monitors;
ClutterBackend *backend;
CoglContext *cogl_context;
CoglRenderer *cogl_renderer;
char *display_name;
memset (compositor, 0, sizeof (MetaWaylandCompositor));
compositor->wayland_display = wl_display_create ();
if (compositor->wayland_display == NULL)
g_error ("failed to create wayland display");
wl_display_init_shm (compositor->wayland_display);
wl_list_init (&compositor->frame_callbacks);
if (!wl_global_create (compositor->wayland_display,
&wl_compositor_interface,
META_WL_COMPOSITOR_VERSION,
compositor, compositor_bind))
g_error ("Failed to register wayland compositor object");
compositor->wayland_loop =
wl_display_get_event_loop (compositor->wayland_display);
compositor->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.
*
* At some point we could perhaps try and get the X protocol proxied
* over the wayland protocol so that we don't have to worry about
* synchronizing the two command streams. */
g_source_set_priority (compositor->wayland_event_source,
GDK_PRIORITY_EVENTS + 1);
g_source_attach (compositor->wayland_event_source, NULL);
clutter_wayland_set_compositor_display (compositor->wayland_display);
if (getenv ("WESTON_LAUNCHER_SOCK"))
compositor->launcher = meta_launcher_new ();
if (clutter_init (NULL, NULL) != CLUTTER_INIT_SUCCESS)
g_error ("Failed to initialize Clutter");
backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (backend);
cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (cogl_context));
if (cogl_renderer_get_winsys_id (cogl_renderer) == COGL_WINSYS_ID_EGL_KMS)
compositor->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
else
compositor->drm_fd = -1;
if (compositor->drm_fd >= 0)
{
GError *error;
error = NULL;
if (!meta_launcher_set_drm_fd (compositor->launcher, compositor->drm_fd, &error))
{
g_error ("Failed to set DRM fd to weston-launch and become DRM master: %s", error->message);
g_error_free (error);
}
}
meta_monitor_manager_initialize ();
monitors = meta_monitor_manager_get ();
g_signal_connect (monitors, "monitors-changed",
G_CALLBACK (on_monitors_changed), compositor);
compositor->outputs = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify);
compositor->outputs = meta_wayland_compositor_update_outputs (compositor, monitors);
compositor->stage = meta_wayland_stage_new ();
g_signal_connect_after (compositor->stage, "paint",
G_CALLBACK (paint_finished_cb), compositor);
g_signal_connect (compositor->stage, "destroy",
G_CALLBACK (stage_destroy_cb), NULL);
meta_wayland_data_device_manager_init (compositor->wayland_display);
compositor->seat = meta_wayland_seat_new (compositor->wayland_display,
compositor->drm_fd >= 0);
g_signal_connect (compositor->stage,
"captured-event",
G_CALLBACK (event_cb),
compositor);
/* If something sets a grab on an actor then the captured event
* signal won't get emitted but we still want to see these events so
* we can update the cursor position. To make sure we see all events
* we also install an emission hook on the event signal */
event_signal = g_signal_lookup ("event", CLUTTER_TYPE_STAGE);
g_signal_add_emission_hook (event_signal,
0 /* detail */,
event_emission_hook_cb,
compositor, /* hook_data */
NULL /* data_destroy */);
meta_wayland_init_shell (compositor);
clutter_actor_show (compositor->stage);
/* FIXME: find the first free name instead */
compositor->display_name = g_strdup ("wayland-0");
if (wl_display_add_socket (compositor->wayland_display, compositor->display_name))
g_error ("Failed to create socket");
/* XXX: It's important that we only try and start xwayland after we
* have initialized EGL because EGL implements the "wl_drm"
* interface which xwayland requires to determine what drm device
* name it should use.
*
* By waiting until we've shown the stage above we ensure that the
* underlying GL resources for the surface have also been allocated
* and so EGL must be initialized by this point.
*/
if (!meta_xwayland_start (compositor))
g_error ("Failed to start X Wayland");
display_name = g_strdup_printf (":%d", compositor->xwayland_display_index);
set_gnome_env ("DISPLAY", display_name);
g_free (display_name);
set_gnome_env ("WAYLAND_DISPLAY", compositor->display_name);
}
void
meta_wayland_finalize (void)
{
MetaWaylandCompositor *compositor;
compositor = meta_wayland_compositor_get_default ();
meta_xwayland_stop (compositor);
g_clear_object (&compositor->launcher);
}
MetaLauncher *
meta_wayland_compositor_get_launcher (MetaWaylandCompositor *compositor)
{
return compositor->launcher;
}
gboolean
meta_wayland_compositor_is_native (MetaWaylandCompositor *compositor)
{
return compositor->drm_fd >= 0;
}
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