void g_ui::event_dispatch_thread() {
size_t buffer_size = G_UI_MAXIMUM_MESSAGE_SIZE;
g_local<uint8_t> buffer(new uint8_t[buffer_size]);
while (true) {
auto stat = g_receive_message(buffer(), buffer_size);
if (stat == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
// event message
g_ui_component_event_header* event_header = (g_ui_component_event_header*) G_MESSAGE_CONTENT(buffer());
g_component* component = g_component_registry::get(event_header->component_id);
if (component == 0) {
klog("event received for unknown component %i", event_header->component_id);
continue;
}
// tell the component delegate to handle the event
component->handle(event_header);
} else {
klog("something went wrong when receiving an event, status code: %i", stat);
}
}
}
bool g_component::addChild(g_component* child) {
if (!g_ui_initialized) {
return 0;
}
// send initialization request
g_message_transaction tx = g_get_message_tx_id();
g_ui_component_add_child_request request;
request.header.id = G_UI_PROTOCOL_ADD_COMPONENT;
request.parent = this->id;
request.child = child->id;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_add_child_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_add_child_response);
uint8_t buffer[bufferSize];
if (g_receive_message_t(buffer, bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_add_child_response* response = (g_ui_component_add_child_response*) G_MESSAGE_CONTENT(buffer);
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return true;
}
}
return false;
}
/**
* Opens a connection to the window server.
*/
g_ui_open_status g_ui::open() {
// check if already open
if (g_ui_initialized) {
return G_UI_OPEN_STATUS_EXISTING;
}
// get window managers id
g_tid window_mgr = g_task_get_id(G_UI_REGISTRATION_THREAD_IDENTIFIER);
if (window_mgr == -1) {
klog("failed to retrieve task id of window server with identifier '%s'", G_UI_REGISTRATION_THREAD_IDENTIFIER);
return G_UI_OPEN_STATUS_COMMUNICATION_FAILED;
}
// start event dispatcher
g_ui_event_dispatcher_tid = g_create_thread((void*) &event_dispatch_thread);
// send initialization request
g_message_transaction init_tx = g_get_message_tx_id();
g_ui_initialize_request request;
request.header.id = G_UI_PROTOCOL_INITIALIZATION;
g_send_message_t(window_mgr, &request, sizeof(g_ui_initialize_request), init_tx);
// receive initialization response
uint32_t response_buffer_size = sizeof(g_message_header) + sizeof(g_ui_initialize_response);
g_local<uint8_t> response_buffer(new uint8_t[response_buffer_size]);
if (g_receive_message_t(response_buffer(), response_buffer_size, init_tx) != G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
klog("failed to communicate with the window server");
return G_UI_OPEN_STATUS_COMMUNICATION_FAILED;
}
// check response
g_ui_initialize_response* response = (g_ui_initialize_response*) G_MESSAGE_CONTENT(response_buffer());
if (response->status != G_UI_PROTOCOL_SUCCESS) {
klog("failed to open UI");
return G_UI_OPEN_STATUS_FAILED;
}
// mark UI as ready
g_ui_initialized = true;
g_ui_delegate_tid = response->window_server_delegate_thread;
return G_UI_OPEN_STATUS_SUCCESSFUL;
}
g_mouse_info g_mouse::readMouse() {
if (mouseTopic == -1) {
registerMouse();
}
size_t buflen = sizeof(g_message_header) + sizeof(g_ps2_mouse_packet);
uint8_t buf[buflen];
g_mouse_info e;
if (g_receive_message_t(buf, buflen, mouseTopic) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ps2_mouse_packet* packet = (g_ps2_mouse_packet*) G_MESSAGE_CONTENT(buf);
e.x = packet->x;
e.y = packet->y;
e.button1 = (packet->flags & (1 << 0));
e.button2 = (packet->flags & (1 << 1));
e.button3 = (packet->flags & (1 << 2));
}
return e;
}
std::string g_titled_component::getTitle() {
if (!g_ui_initialized) {
return 0;
}
// send initialization request
uint32_t tx = g_ipc_next_topic();
g_ui_component_get_title_request request;
request.header.id = G_UI_PROTOCOL_SET_TITLE;
request.id = this->id;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_get_title_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_get_title_response);
g_local<uint8_t> buffer(new uint8_t[bufferSize]);
if (g_receive_message_t(buffer(), bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_get_title_response* response = (g_ui_component_get_title_response*) G_MESSAGE_CONTENT(buffer());
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return std::string(response->title);
}
}
return std::string();
}
bool g_titled_component::setTitle(std::string title) {
if (!g_ui_initialized) {
return 0;
}
// send initialization request
uint32_t tx = g_ipc_next_topic();
g_local<g_ui_component_set_title_request> request(new g_ui_component_set_title_request());
request()->header.id = G_UI_PROTOCOL_SET_TITLE;
request()->id = this->id;
// fill text (truncate if necessary)
const char* title_str = title.c_str();
size_t title_len;
if (title.length() >= G_UI_COMPONENT_TITLE_MAXIMUM) {
title_len = G_UI_COMPONENT_TITLE_MAXIMUM;
} else {
title_len = title.length();
}
memcpy(request()->title, title.c_str(), title_len);
request()->title[title_len] = 0;
g_send_message_t(g_ui_delegate_tid, request(), sizeof(g_ui_component_set_title_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_set_title_response);
uint8_t buffer[bufferSize];
if (g_receive_message_t(buffer, bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_set_title_response* response = (g_ui_component_set_title_response*) G_MESSAGE_CONTENT(buffer);
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return true;
}
}
return false;
}
bool g_ui::get_screen_dimension(g_dimension* out) {
if (!g_ui_initialized) {
return false;
}
g_message_transaction tx = g_get_message_tx_id();
// send request
g_ui_get_screen_dimension_request request;
request.header.id = G_UI_PROTOCOL_GET_SCREEN_DIMENSION;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_get_screen_dimension_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_get_screen_dimension_response);
g_local<uint8_t> buffer(new uint8_t[bufferSize]);
if (g_receive_message_t(buffer(), bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_get_screen_dimension_response* response = (g_ui_get_screen_dimension_response*) G_MESSAGE_CONTENT(buffer());
*out = response->size;
return true;
}
return false;
}
bool g_ui::register_desktop_canvas(g_canvas* c) {
if (!g_ui_initialized) {
return false;
}
g_message_transaction tx = g_get_message_tx_id();
// send registration request
g_ui_register_desktop_canvas_request request;
request.header.id = G_UI_PROTOCOL_REGISTER_DESKTOP_CANVAS;
request.canvas_id = c->getId();
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_register_desktop_canvas_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_register_desktop_canvas_response);
g_local<uint8_t> buffer(new uint8_t[bufferSize]);
if (g_receive_message_t(buffer(), bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_register_desktop_canvas_response* response = (g_ui_register_desktop_canvas_response*) G_MESSAGE_CONTENT(buffer());
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return true;
}
}
return false;
}
g_rectangle g_component::getBounds() {
if (!g_ui_initialized) {
return g_rectangle();
}
// send initialization request
g_message_transaction tx = g_get_message_tx_id();
g_ui_component_get_bounds_request request;
request.header.id = G_UI_PROTOCOL_GET_BOUNDS;
request.id = this->id;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_get_bounds_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_get_bounds_response);
g_local<uint8_t> buffer(new uint8_t[bufferSize]);
if (g_receive_message_t(buffer(), bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_get_bounds_response* response = (g_ui_component_get_bounds_response*) G_MESSAGE_CONTENT(buffer());
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return response->bounds;
}
}
return g_rectangle();
}
bool g_component::setListener(g_ui_component_event_type eventType, g_listener* new_listener) {
if (!g_ui_initialized) {
return false;
}
// set new
listeners[eventType] = new_listener;
// check
if (new_listener == 0) {
return false;
}
// send request
g_message_transaction tx = g_get_message_tx_id();
g_ui_component_set_listener_request request;
request.header.id = G_UI_PROTOCOL_SET_LISTENER;
request.id = this->id;
request.target_thread = g_ui_event_dispatcher_tid;
request.event_type = eventType;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_set_listener_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_set_listener_response);
uint8_t buffer[bufferSize];
if (g_receive_message_t(buffer, bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_set_listener_response* response = (g_ui_component_set_listener_response*) G_MESSAGE_CONTENT(buffer);
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return true;
}
}
return false;
}
bool g_component::getNumericProperty(int property, uint32_t* out) {
if (!g_ui_initialized) {
return false;
}
// send initialization request
g_message_transaction tx = g_get_message_tx_id();
g_ui_component_get_numeric_property_request request;
request.header.id = G_UI_PROTOCOL_GET_NUMERIC_PROPERTY;
request.id = this->id;
request.property = property;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_get_numeric_property_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_get_numeric_property_response);
g_local<uint8_t> buffer(new uint8_t[bufferSize]);
if (g_receive_message_t(buffer(), bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_get_numeric_property_response* response = (g_ui_component_get_numeric_property_response*) G_MESSAGE_CONTENT(buffer());
if (response->status == G_UI_PROTOCOL_SUCCESS) {
*out = response->value;
return true;
}
}
return false;
}
bool g_component::setVisible(bool visible) {
if (!g_ui_initialized) {
return 0;
}
// send initialization request
g_message_transaction tx = g_get_message_tx_id();
g_ui_component_set_visible_request request;
request.header.id = G_UI_PROTOCOL_SET_VISIBLE;
request.id = this->id;
request.visible = visible;
g_send_message_t(g_ui_delegate_tid, &request, sizeof(g_ui_component_set_visible_request), tx);
// read response
size_t bufferSize = sizeof(g_message_header) + sizeof(g_ui_component_set_visible_response);
uint8_t buffer[bufferSize];
if (g_receive_message_t(buffer, bufferSize, tx) == G_MESSAGE_RECEIVE_STATUS_SUCCESSFUL) {
g_ui_component_set_visible_response* response = (g_ui_component_set_visible_response*) G_MESSAGE_CONTENT(buffer);
if (response->status == G_UI_PROTOCOL_SUCCESS) {
return true;
}
}
return false;
}
g_spawn_status g_spawn_poi(const char* path, const char* args, const char* workdir, g_security_level securityLevel, g_pid* pid, g_fd out_stdio[3],
g_fd in_stdio[3]) {
g_spawn_status res = G_SPAWN_STATUS_UNKNOWN;
uint32_t tid = g_get_tid();
// get spawner task identifier
g_tid spawner_tid = g_task_get_id(G_SPAWNER_IDENTIFIER);
if (spawner_tid == -1) {
return res;
}
// create transaction
g_message_transaction tx = g_get_message_tx_id();
// create request
size_t path_bytes = __g_strlen(path) + 1;
size_t args_bytes = __g_strlen(args) + 1;
size_t workdir_bytes = __g_strlen(workdir) + 1;
size_t requestlen = sizeof(g_spawn_command_spawn_request) + path_bytes + args_bytes + workdir_bytes;
g_local<uint8_t> _request(new uint8_t[requestlen]);
uint8_t* request = _request();
// copy request contents
g_spawn_command_spawn_request* req = (g_spawn_command_spawn_request*) request;
req->header.command = G_SPAWN_COMMAND_SPAWN_REQUEST;
req->security_level = securityLevel;
req->path_bytes = path_bytes;
req->args_bytes = args_bytes;
req->workdir_bytes = workdir_bytes;
if (in_stdio != nullptr) {
req->stdin = in_stdio[0];
req->stdout = in_stdio[1];
req->stderr = in_stdio[2];
} else {
req->stdin = G_FD_NONE;
req->stdout = G_FD_NONE;
req->stderr = G_FD_NONE;
}
uint8_t* insert = request;
insert += sizeof(g_spawn_command_spawn_request);
__g_memcpy(insert, path, path_bytes);
insert += path_bytes;
__g_memcpy(insert, args, args_bytes);
insert += args_bytes;
__g_memcpy(insert, workdir, workdir_bytes);
// send request to spawner
g_send_message_t(spawner_tid, request, requestlen, tx);
// receive response
size_t resp_len = sizeof(g_message_header) + sizeof(g_spawn_command_spawn_response);
g_local<uint8_t> resp_buf(new uint8_t[resp_len]);
g_receive_message_t(resp_buf(), resp_len, tx);
g_spawn_command_spawn_response* response = (g_spawn_command_spawn_response*) G_MESSAGE_CONTENT(resp_buf());
// if successful, take response parameters
if (response->status == G_SPAWN_STATUS_SUCCESSFUL) {
if (pid != nullptr) {
*pid = response->spawned_process_id;
}
if (out_stdio != nullptr) {
out_stdio[0] = response->stdin_write;
out_stdio[1] = response->stdout_read;
out_stdio[2] = response->stderr_read;
}
}
return response->status;
}
