static int weston_dbus_bind(struct wl_event_loop *loop, DBusConnection *c,
struct wl_event_source **ctx_out)
{
bool b;
int r, fd;
/* Idle events cannot reschedule themselves, therefore we use a dummy
* event-fd and mark it for post-dispatch. Hence, the dbus
* dispatcher is called after every dispatch-round.
* This is required as dbus doesn't allow dispatching events from
* within its own event sources. */
fd = eventfd(0, EFD_CLOEXEC);
if (fd < 0)
return -errno;
*ctx_out = wl_event_loop_add_fd(loop, fd, 0, weston_dbus_dispatch, c);
close(fd);
if (!*ctx_out)
return -ENOMEM;
wl_event_source_check(*ctx_out);
b = dbus_connection_set_watch_functions(c,
weston_dbus_add_watch,
weston_dbus_remove_watch,
weston_dbus_toggle_watch,
loop,
NULL);
if (!b) {
r = -ENOMEM;
goto error;
}
b = dbus_connection_set_timeout_functions(c,
weston_dbus_add_timeout,
weston_dbus_remove_timeout,
weston_dbus_toggle_timeout,
loop,
NULL);
if (!b) {
r = -ENOMEM;
goto error;
}
dbus_connection_ref(c);
return 0;
error:
dbus_connection_set_timeout_functions(c, NULL, NULL, NULL,
NULL, NULL);
dbus_connection_set_watch_functions(c, NULL, NULL, NULL,
NULL, NULL);
wl_event_source_remove(*ctx_out);
*ctx_out = NULL;
return r;
}
static struct weston_compositor *
wayland_compositor_create(struct wl_display *display,
int width, int height, const char *display_name,
int *argc, char *argv[],
struct weston_config *config)
{
struct wayland_compositor *c;
struct wl_event_loop *loop;
int fd;
c = malloc(sizeof *c);
if (c == NULL)
return NULL;
memset(c, 0, sizeof *c);
if (weston_compositor_init(&c->base, display, argc, argv,
config) < 0)
goto err_free;
c->parent.wl_display = wl_display_connect(display_name);
if (c->parent.wl_display == NULL) {
weston_log("failed to create display: %m\n");
goto err_compositor;
}
wl_list_init(&c->input_list);
c->parent.registry = wl_display_get_registry(c->parent.wl_display);
wl_registry_add_listener(c->parent.registry, ®istry_listener, c);
wl_display_dispatch(c->parent.wl_display);
c->base.wl_display = display;
if (gl_renderer_create(&c->base, c->parent.wl_display,
gl_renderer_alpha_attribs,
NULL) < 0)
goto err_display;
c->base.destroy = wayland_destroy;
c->base.restore = wayland_restore;
c->border.top = 30;
c->border.bottom = 24;
c->border.left = 25;
c->border.right = 26;
/* requires border fields */
if (wayland_compositor_create_output(c, width, height) < 0)
goto err_gl;
/* requires gl_renderer_output_state_create called
* by wayland_compositor_create_output */
create_border(c);
loop = wl_display_get_event_loop(c->base.wl_display);
fd = wl_display_get_fd(c->parent.wl_display);
c->parent.wl_source =
wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
wayland_compositor_handle_event, c);
if (c->parent.wl_source == NULL)
goto err_gl;
wl_event_source_check(c->parent.wl_source);
return &c->base;
err_gl:
c->base.renderer->destroy(&c->base);
err_display:
wl_display_disconnect(c->parent.wl_display);
err_compositor:
weston_compositor_shutdown(&c->base);
err_free:
free(c);
return NULL;
}
//DbusHandler
DBusHandler::DBusHandler(Compositor& comp)
: compositor_(&comp)
{
DBusError err;
dbus_error_init(&err);
dbus_connection_set_change_sigpipe(false);
//todo: error checking everywhere
if(!(dbusConnection_ = dbus_bus_get_private(DBUS_BUS_SYSTEM, &err)))
{
std::string errStr;
checkError(err, errStr);
throw std::runtime_error("DBus::DBus: cant connect to dbus. " + errStr);
return;
}
dbus_connection_set_exit_on_disconnect(dbusConnection_, false);
//use dummy event fd
int fd;
if((fd = eventfd(0, EFD_CLOEXEC)) < 0)
{
throw std::runtime_error("DBus::DBus: cant create eventfd");
return;
}
//event source
dbusEventSource_ = wl_event_loop_add_fd(&comp.wlEventLoop(), fd, 0, Callbacks::dispatchDBus,
this);
close(fd);
wl_event_source_check(dbusEventSource_);
//watch
if(!dbus_connection_set_watch_functions(dbusConnection_, Callbacks::addWatch,
Callbacks::removeWatch, Callbacks::toggleWatch, this, nullptr))
{
throw std::runtime_error("dbus_connection_set_watch_functions failed");
return;
}
//timeout
if(!dbus_connection_set_timeout_functions(dbusConnection_, Callbacks::addTimeout,
Callbacks::removeTimeout, Callbacks::toggleTimeout, this, nullptr))
{
throw std::runtime_error("dbus_connection_set_timeout_functions failed");
return;
}
//filter
if(!dbus_connection_add_filter(dbusConnection_, Callbacks::dbusFilter, this, nullptr))
{
throw std::runtime_error("dbus add filter failed");
return;
}
//disconnected callback
signalCallbacks_.emplace_back(MsgCallback{DBUS_INTERFACE_LOCAL, "Diconnected",
nytl::memberCallback(&DBusHandler::disconnected, this)});
ny::sendLog("dbus handler succesfully set up");
}
X11Backend::X11Backend(Compositor& comp, Seat& seat)
: Backend(), compositor_(&comp), seat_(&seat)
{
//setup x connection
xDisplay_ = XOpenDisplay(nullptr);
if(!xDisplay_)
{
throw std::runtime_error("cant connect to x11 server");
return;
}
xConnection_ = XGetXCBConnection(xDisplay_);
if(!xConnection_)
{
throw std::runtime_error("cant get xcb connection");
return;
}
XSetEventQueueOwner(xDisplay_, XCBOwnsEventQueue);
if(xcb_connection_has_error(xConnection_))
{
throw std::runtime_error("xcb connection error");
return;
}
xScreen_ = xcb_setup_roots_iterator(xcb_get_setup(xConnection_)).data;
//atoms
struct atomProp
{
xcb_atom_t& ret;
std::string str;
};
atomProp vec[] = {
{atoms::protocols, "WM_PROTOCOLS"},
{atoms::deleteWindow, "WM_DELETE_WINDOW"}
};
xcb_intern_atom_reply_t* reply;
for(auto& p : vec)
{
auto atom = xcb_intern_atom(xConnection_, 0, p.str.size(), p.str.c_str());
reply = xcb_intern_atom_reply(xConnection_, atom, nullptr);
p.ret = (reply ? reply->atom : 0);
}
//xkb
xkbSetup();
//event source
inputEventSource_ = wl_event_loop_add_fd(&comp.wlEventLoop(),
xcb_get_file_descriptor(xConnection_), WL_EVENT_READABLE, eventCallback, this);
if(!inputEventSource_) throw std::runtime_error("could not create wayland event source");
//what does this? really needed?
wl_event_source_check(inputEventSource_);
//eglContext
eglContext_ = std::make_unique<WaylandEglContext>(xDisplay_);
if(!eglContext_) throw std::runtime_error("x11Backend::x11Backend: failed to create EglContext");
eglContext_->bindWlDisplay(compositor_->wlDisplay());
xcb_flush(xConnection_);
}
