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/*
* Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <unistd.h>
#include "app.hpp"
#include "json_helper.hpp"
#include "util.hpp"
#include "wayland.hpp"
#include <algorithm>
#include <mutex>
#include <json.h>
extern "C" {
#include <afb/afb-binding.h>
#include <systemd/sd-event.h>
}
namespace {
struct afb_instance {
std::unique_ptr<wl::display> display;
wm::App app;
afb_instance() : display{new wl::display}, app{this->display.get()} {}
int init();
};
struct afb_instance *g_afb_instance;
int afb_instance::init() {
return this->app.init();
}
int display_event_callback(sd_event_source *evs, int /*fd*/, uint32_t events,
void * /*data*/) {
ST();
if ((events & EPOLLHUP) != 0) {
logerror("The compositor hung up, dying now.");
delete g_afb_instance;
g_afb_instance = nullptr;
goto error;
}
if ((events & EPOLLIN) != 0u) {
{
STN(display_read_events);
g_afb_instance->app.display->read_events();
g_afb_instance->app.set_pending_events();
}
{
// We want do dispatch pending wayland events from within
// the API context
STN(winman_ping_api_call);
afb_service_call("windowmanager", "ping", json_object_new_object(),
[](void *c, int st, json_object *j) {
STN(winman_ping_api_call_return);
},
nullptr);
}
}
return 0;
error:
sd_event_source_unref(evs);
if (getenv("WINMAN_EXIT_ON_HANGUP") != nullptr) {
exit(1);
}
return -1;
}
// _ _ _ _ _ _ _ ____
// | |__ (_)_ __ __| (_)_ __ __ _ (_)_ __ (_) |_ / /\ \
// | '_ \| | '_ \ / _` | | '_ \ / _` | | | '_ \| | __| | | |
// | |_) | | | | | (_| | | | | | (_| | | | | | | | |_| | | |
// |_.__/|_|_| |_|\__,_|_|_| |_|\__, |___|_|_| |_|_|\__| | | |
// |___/_____| \_\/_/
int binding_init_() {
lognotice("WinMan ver. %s", WINMAN_VERSION_STRING);
if (g_afb_instance != nullptr) {
logerror("Wayland context already initialized?");
return 0;
}
if (getenv("XDG_RUNTIME_DIR") == nullptr) {
logerror("Environment variable XDG_RUNTIME_DIR not set");
goto error;
}
{
// wait until wayland compositor starts up.
int cnt = 0;
g_afb_instance = new afb_instance;
while (!g_afb_instance->display->ok()) {
cnt++;
if (20 <= cnt) {
logerror("Could not connect to compositor");
goto error;
}
logerror("Wait to start weston ...");
sleep(1);
delete g_afb_instance;
g_afb_instance = new afb_instance;
}
}
if (g_afb_instance->init() == -1) {
logerror("Could not connect to compositor");
goto error;
}
{
int ret = sd_event_add_io(afb_daemon_get_event_loop(), nullptr,
g_afb_instance->display->get_fd(), EPOLLIN,
display_event_callback, g_afb_instance);
if (ret < 0) {
logerror("Could not initialize afb_instance event handler: %d", -ret);
goto error;
}
}
atexit([] { delete g_afb_instance; });
return 0;
error:
delete g_afb_instance;
g_afb_instance = nullptr;
return -1;
}
int binding_init() noexcept {
try {
return binding_init_();
} catch (std::exception &e) {
logerror("Uncaught exception in binding_init(): %s", e.what());
}
return -1;
}
} // namespace
#include "afb_binding_glue.inl"
// XXX implement send_event right here...
namespace wm {
void binding_api::send_event(char const *evname, char const *label) {
logdebug("%s: %s(%s)", __func__, evname, label);
int ret = afb_daemon_broadcast_event(evname, json_object_new_string(label));
if (ret != 0) {
logdebug("afb_event_broadcast failed: %m");
}
}
} // namespace wm
extern "C" const struct afb_binding_v2 afbBindingV2 = {
"windowmanager", nullptr, nullptr, windowmanager_verbs, nullptr, binding_init, nullptr, 0};
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