Fix launching GUI with no engine.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@5640 a436a847-0d15-0410-975c-d299462d15a1

4 files changed, 171 insertions, 114 deletions

diff --git a/src/gui/ConnectWindow.cpp b/src/gui/ConnectWindow.cpp
index 1921c708..2e8841dc 100644
--- a/src/gui/ConnectWindow.cpp
+++ b/src/gui/ConnectWindow.cpp
@@ -24,6 +24,7 @@
 
 #include "raul/Process.hpp"
 
+#include "ingen/Configuration.hpp"
 #include "ingen/EngineBase.hpp"
 #include "ingen/Interface.hpp"
 #include "ingen/Log.hpp"
@@ -62,6 +63,7 @@ ConnectWindow::ConnectWindow(BaseObjectType*                   cobject,
 	, _connect_button(NULL)
 	, _quit_button(NULL)
 	, _mode(Mode::CONNECT_REMOTE)
+	, _connect_uri("unix:///tmp/ingen.sock")
 	, _ping_id(-1)
 	, _attached(false)
 	, _finished_connecting(false)
@@ -72,15 +74,29 @@ ConnectWindow::ConnectWindow(BaseObjectType*                   cobject,
 }
 
 void
+ConnectWindow::error(const std::string& msg)
+{
+	if (!is_visible()) {
+		present();
+		set_connecting_widget_states();
+	}
+	
+	if (_progress_label) {
+		_progress_label->set_text(msg);
+	}
+
+	if (_app && _app->world()) {
+		_app->world()->log().error(msg + "\n");
+	}
+}
+
+void
 ConnectWindow::start(App& app, Ingen::World* world)
 {
 	_app = &app;
 
 	if (world->engine()) {
 		_mode = Mode::INTERNAL;
-		if (_widgets_loaded) {
-			_internal_radio->set_active(true);
-		}
 	}
 
 	set_connected_to(world->interface());
@@ -94,7 +110,7 @@ ConnectWindow::ingen_response(int32_t            id,
 {
 	if (id == _ping_id) {
 		if (status != Status::SUCCESS) {
-			_app->world()->log().error("Failed to get root patch\n");
+			error("Failed to get root patch");
 		} else {
 			_attached = true;
 		}
@@ -114,6 +130,7 @@ ConnectWindow::set_connected_to(SPtr<Ingen::Interface> engine)
 		_progress_bar->set_fraction(1.0);
 		_progress_label->set_text("Connected to engine");
 		_url_entry->set_sensitive(false);
+		_url_entry->set_text(engine->uri());
 		_connect_button->set_sensitive(false);
 		_disconnect_button->set_label("gtk-disconnect");
 		_disconnect_button->set_sensitive(true);
@@ -125,12 +142,7 @@ ConnectWindow::set_connected_to(SPtr<Ingen::Interface> engine)
 		_progress_bar->set_fraction(0.0);
 		_connect_button->set_sensitive(true);
 		_disconnect_button->set_sensitive(false);
-
-		if (_app->world()->engine())
-			_internal_radio->set_sensitive(true);
-		else
-			_internal_radio->set_sensitive(false);
-
+		_internal_radio->set_sensitive(true);
 		_server_radio->set_sensitive(true);
 		_launch_radio->set_sensitive(true);
 
@@ -159,93 +171,88 @@ ConnectWindow::set_connecting_widget_states()
 	_port_spinbutton->set_sensitive(false);
 }
 
-/** Launch (if applicable) and connect to the Engine.
- *
- * This will create the required interfaces and initialize the App with them.
- */
+bool
+ConnectWindow::connect_remote(const Raul::URI& uri)
+{
+	Ingen::World* world = _app->world();
+
+	SPtr<ThreadedSigClientInterface> tsci(
+		new Client::ThreadedSigClientInterface(1024));
+
+	SPtr<Ingen::Interface> iface(world->new_interface(uri, tsci));
+	if (iface) {
+		world->set_interface(iface);
+		_app->attach(tsci);
+		_app->register_callbacks();
+		return true;
+	}
+
+	return false;
+}
+
+/** Set up initial connect stage and launch connect callback. */
 void
 ConnectWindow::connect(bool existing)
 {
-	if (_attached)
+	if (_app->client()) {
+		error("Already connected");
+		return;
+	} else if (_attached) {
 		_attached = false;
+	}
 
-	assert(!_app->client());
-
-	_connect_stage = 0;
 	set_connecting_widget_states();
 
 	Ingen::World* world = _app->world();
 
-#ifdef HAVE_SOCKET
 	if (_mode == Mode::CONNECT_REMOTE) {
-		Raul::URI uri("unix:///tmp/ingen.sock");
-		if (_widgets_loaded) {
-			const std::string& user_uri = _url_entry->get_text();
-			if (Raul::URI::is_valid(user_uri)) {
-				uri = Raul::URI(user_uri);
-			}
-		}
-
+		std::string uri_str = world->conf().option("connect").ptr<char>();
 		if (existing) {
-			uri = world->interface()->uri();
+			uri_str = world->interface()->uri();
+		} else if (_widgets_loaded) {
+			uri_str = _url_entry->get_text();
 		}
 
-		SPtr<ThreadedSigClientInterface> tsci;
-		if (world->interface()) {
-			tsci = dynamic_ptr_cast<ThreadedSigClientInterface>(
-				world->interface()->respondee());
+		if (!Raul::URI::is_valid(uri_str)) {
+			error((fmt("Invalid socket URI %1%") % uri_str).str());
+			return;
 		}
 
-		if (!tsci) {
-			world->set_interface(world->new_interface(uri, tsci));
-		}
+		_connect_uri = Raul::URI(uri_str);
 
-		_app->attach(tsci);
-		_app->register_callbacks();
-
-		Glib::signal_timeout().connect(
-			sigc::mem_fun(this, &ConnectWindow::gtk_callback), 40);
-		return;
 	} else if (_mode == Mode::LAUNCH_REMOTE) {
-		int port = _port_spinbutton->get_value_as_int();
-		std::stringstream ss;
-		ss << port;
-		const std::string port_str = ss.str();
-		const string cmd = string("ingen -e -E ").append(port_str);
-
-		if (Raul::Process::launch(cmd)) {
-			const Raul::URI engine_uri(string("tcp://localhost:") + port_str);
-
-			SPtr<ThreadedSigClientInterface> tsci(new ThreadedSigClientInterface(1024));
-			world->set_interface(world->new_interface(engine_uri, tsci));
+		const std::string port  = std::to_string(_port_spinbutton->get_value_as_int());
+		const char*       cmd[] = { "ingen", "-e", "-E", port.c_str(), NULL };
+			
+		if (!Raul::Process::launch(cmd)) {
+			error("Failed to launch engine process");
+			return;
+		}
 
-			_app->attach(tsci);
-			_app->register_callbacks();
+		_connect_uri = Raul::URI(std::string("tcp://localhost:") + port);
 
-			Glib::signal_timeout().connect(
-				sigc::mem_fun(this, &ConnectWindow::gtk_callback), 40);
-		} else {
-			world->log().error("Failed to launch ingen process\n");
-		}
-		return;
-	}
-#endif
-	if (_mode == Mode::INTERNAL) {
+	} else if (_mode == Mode::INTERNAL) {
 		if (!world->engine()) {
-			world->load_module("server");
-			world->load_module("jack");
-			world->engine()->activate();
+			if (!world->load_module("server")) {
+				error("Failed to load server module");
+				return;
+			} else if (!world->load_module("jack")) {
+				error("Failed to load jack module");
+				return;
+			} else if (!world->engine()->activate()) {
+				error("Failed to activate engine");
+				return;
+			}
 		}
+	}
 
-		SPtr<SigClientInterface> client(new SigClientInterface());
-
-		world->interface()->set_respondee(client);
-		_app->attach(client);
-		_app->register_callbacks();
-
-		Glib::signal_timeout().connect(
-			sigc::mem_fun(this, &ConnectWindow::gtk_callback), 10);
+	set_connecting_widget_states();
+	_connect_stage = 0;
+	if (_widgets_loaded) {
+		_progress_label->set_text("Connecting...");
 	}
+	Glib::signal_timeout().connect(
+		sigc::mem_fun(this, &ConnectWindow::gtk_callback), 33);
 }
 
 void
@@ -289,8 +296,10 @@ ConnectWindow::on_show()
 {
 	if (!_widgets_loaded) {
 		load_widgets();
-		if (_attached)
-			set_connected_to(_app->interface());
+	}
+
+	if (_attached) {
+		set_connected_to(_app->interface());
 	}
 
 	Gtk::Dialog::on_show();
@@ -330,6 +339,16 @@ ConnectWindow::load_widgets()
 	_quit_button->signal_clicked().connect(
 		sigc::mem_fun(this, &ConnectWindow::quit_clicked));
 
+	_url_entry->set_text(_app->world()->conf().option("connect").ptr<char>());
+	if (Raul::URI::is_valid(_url_entry->get_text())) {
+		_connect_uri = Raul::URI(_url_entry->get_text());
+	}
+
+	_port_spinbutton->set_range(1, std::numeric_limits<uint16_t>::max());
+	_port_spinbutton->set_increments(1, 100);
+	_port_spinbutton->set_value(
+		_app->world()->conf().option("engine-port").get<int32_t>());
+	
 	_progress_bar->set_pulse_step(0.01);
 	_widgets_loaded = true;
 
@@ -375,6 +394,25 @@ ConnectWindow::internal_toggled()
 	_mode = Mode::INTERNAL;
 }
 
+void
+ConnectWindow::next_stage()
+{
+	static const char* labels[] = {
+		"Connecting...",
+		"Pinging engine...",
+		"Attaching to engine...",
+		"Requesting root graph...",
+		"Loading plugins...",
+		"Connected"
+	};
+		
+		
+	++_connect_stage;
+	if (_widgets_loaded) {
+		_progress_label->set_text(labels[_connect_stage]);
+	}
+}
+
 bool
 ConnectWindow::gtk_callback()
 {
@@ -386,8 +424,9 @@ ConnectWindow::gtk_callback()
 	// Timing stuff for repeated attach attempts
 	timeval now;
 	gettimeofday(&now, NULL);
-	static const timeval start = now;
-	static timeval       last  = now;
+	static const timeval start    = now;
+	static timeval       last     = now;
+	static unsigned      attempts = 0;
 
 	// Show if attempted connection goes on for a noticeable amount of time
 	if (!is_visible()) {
@@ -400,6 +439,21 @@ ConnectWindow::gtk_callback()
 	}
 
 	if (_connect_stage == 0) {
+		const float ms_since_last = (now.tv_sec - last.tv_sec) * 1000.0f +
+			(now.tv_usec - last.tv_usec) * 0.001f;
+		if (ms_since_last >= 250) {
+			last = now;
+			if (_mode == Mode::INTERNAL) {
+				SPtr<SigClientInterface> client(new SigClientInterface());
+				_app->world()->interface()->set_respondee(client);
+				_app->attach(client);
+				_app->register_callbacks();
+				next_stage();
+			} else if (connect_remote(_connect_uri)) {
+				next_stage();
+			}
+		}
+	} else if (_connect_stage == 1) {
 		_attached = false;
 		_app->client()->signal_response().connect(
 			sigc::mem_fun(this, &ConnectWindow::ingen_response));
@@ -407,32 +461,30 @@ ConnectWindow::gtk_callback()
 		_ping_id = g_random_int_range(1, std::numeric_limits<int32_t>::max());
 		_app->interface()->set_response_id(_ping_id);
 		_app->interface()->get(Raul::URI("ingen:/engine"));
+		last     = now;
+		attempts = 0;
+		next_stage();
 
-		if (_widgets_loaded) {
-			_progress_label->set_text("Connecting to engine...");
-			_progress_bar->set_pulse_step(0.01);
-		}
-
-		++_connect_stage;
-
-	} else if (_connect_stage == 1) {
+	} else if (_connect_stage == 2) {
 		if (_attached) {
-			++_connect_stage;
+			next_stage();
 		} else {
 			const float ms_since_last = (now.tv_sec - last.tv_sec) * 1000.0f +
 				(now.tv_usec - last.tv_usec) * 0.001f;
-			if (ms_since_last > 1000) {
+			if (attempts > 10) {
+				error("Failed to ping engine");
+				_connect_stage = -1;
+			} else if (ms_since_last > 1000) {
 				_app->interface()->set_response_id(_ping_id);
 				_app->interface()->get(Raul::URI("ingen:/engine"));
 				last = now;
+				++attempts;
 			}
 		}
-	} else if (_connect_stage == 2) {
-		_app->interface()->get(Raul::URI(Node::root_uri() + "/"));
-		if (_widgets_loaded)
-			_progress_label->set_text(string("Requesting root graph..."));
-		++_connect_stage;
 	} else if (_connect_stage == 3) {
+		_app->interface()->get(Raul::URI(Node::root_uri() + "/"));
+		next_stage();
+	} else if (_connect_stage == 4) {
 		if (_app->store()->size() > 0) {
 			SPtr<const GraphModel> root = dynamic_ptr_cast<const GraphModel>(
 				_app->store()->object(Raul::Path("/")));
@@ -440,24 +492,21 @@ ConnectWindow::gtk_callback()
 				set_connected_to(_app->interface());
 				_app->window_factory()->present_graph(root);
 				_app->interface()->get(Raul::URI("ingen:/plugins"));
-				if (_widgets_loaded)
-					_progress_label->set_text(string("Loading plugins..."));
-				++_connect_stage;
+				next_stage();
 			}
 		}
-	} else if (_connect_stage == 4) {
+	} else if (_connect_stage == 5) {
 		_app->interface()->get(Raul::URI("ingen:/plugins"));
 		hide();
-		if (_widgets_loaded)
-			_progress_label->set_text("Connected to engine");
 		_connect_stage = 0; // set ourselves up for next time (if there is one)
 		_finished_connecting = true;
 		_app->interface()->set_response_id(1);
 		return false; // deregister this callback
 	}
 
-	if (_widgets_loaded)
+	if (_widgets_loaded) {
 		_progress_bar->pulse();
+	}
 
 	if (_connect_stage == -1) { // we were cancelled
 		if (_widgets_loaded) {
diff --git a/src/gui/ConnectWindow.hpp b/src/gui/ConnectWindow.hpp
index 5e375342..aebfaa78 100644
--- a/src/gui/ConnectWindow.hpp
+++ b/src/gui/ConnectWindow.hpp
@@ -58,6 +58,8 @@ public:
 private:
 	enum class Mode { CONNECT_REMOTE, LAUNCH_REMOTE, INTERNAL };
 
+	void error(const std::string& msg);
+
 	void ingen_response(int32_t id, Status status, const std::string& subject);
 
 	void server_toggled();
@@ -65,6 +67,8 @@ private:
 	void internal_toggled();
 
 	void disconnect();
+	void next_stage();
+	bool connect_remote(const Raul::URI& uri);
 	void connect(bool existing);
 	void activate();
 	void deactivate();
@@ -94,13 +98,14 @@ private:
 	Gtk::Button*       _connect_button;
 	Gtk::Button*       _quit_button;
 
-	Mode    _mode;
-	int32_t _ping_id;
-	bool    _attached;
-	bool    _finished_connecting;
-	bool    _widgets_loaded;
-	int     _connect_stage;
-	bool    _quit_flag;
+	Mode      _mode;
+	Raul::URI _connect_uri;
+	int32_t   _ping_id;
+	bool      _attached;
+	bool      _finished_connecting;
+	bool      _widgets_loaded;
+	int       _connect_stage;
+	bool      _quit_flag;
 };
 
 } // namespace GUI
diff --git a/src/gui/ingen_gui.ui b/src/gui/ingen_gui.ui
index d0751100..3b1ebad5 100644
--- a/src/gui/ingen_gui.ui
+++ b/src/gui/ingen_gui.ui
@@ -473,7 +473,7 @@ See COPYING file included with this distribution, or http://www.gnu.org/licenses
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="xalign">0</property>
-                        <property name="label" translatable="yes">Not Connected</property>
+                        <property name="label" translatable="yes">Not connected</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -579,7 +579,7 @@ See COPYING file included with this distribution, or http://www.gnu.org/licenses
                 </child>
                 <child>
                   <object class="GtkRadioButton" id="connect_server_radiobutton">
-                    <property name="label" translatable="yes">_Connect to running server at: </property>
+                    <property name="label" translatable="yes">_Connect to engine at: </property>
                     <property name="use_action_appearance">False</property>
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
@@ -594,7 +594,7 @@ See COPYING file included with this distribution, or http://www.gnu.org/licenses
                 </child>
                 <child>
                   <object class="GtkRadioButton" id="connect_launch_radiobutton">
-                    <property name="label" translatable="yes">_Launch and connect to server on port: </property>
+                    <property name="label" translatable="yes">_Launch separate engine on port: </property>
                     <property name="use_action_appearance">False</property>
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
@@ -612,10 +612,9 @@ See COPYING file included with this distribution, or http://www.gnu.org/licenses
                 </child>
                 <child>
                   <object class="GtkRadioButton" id="connect_internal_radiobutton">
-                    <property name="label" translatable="yes">Use _internal engine</property>
+                    <property name="label" translatable="yes">Start local _JACK engine</property>
                     <property name="use_action_appearance">False</property>
                     <property name="visible">True</property>
-                    <property name="sensitive">False</property>
                     <property name="can_focus">True</property>
                     <property name="receives_default">False</property>
                     <property name="use_underline">True</property>
diff --git a/src/ingen/ingen.cpp b/src/ingen/ingen.cpp
index a63b4196..1c6f8af6 100644
--- a/src/ingen/ingen.cpp
+++ b/src/ingen/ingen.cpp
@@ -134,8 +134,12 @@ main(int argc, char** argv)
 		          (fmt("Invalid URI <%1%>") % uri).str().c_str());
 		SPtr<Interface> client(new Client::ThreadedSigClientInterface(1024));
 		engine_interface = world->new_interface(Raul::URI(uri), client);
-		ingen_try(bool(engine_interface),
-		          (fmt("Unable to create interface to `%1%'") % uri).str().c_str());
+
+		if (!engine_interface && !conf.option("gui").get<int32_t>()) {
+			cerr << fmt("ingen: Error: Unable to create interface to `%1%'\n");
+			delete world;
+			exit(EXIT_FAILURE);
+		}
 	}
 
 	world->set_interface(engine_interface);