src/gigedit/gigedit.cpp

/*
 * Copyright (C) 2007, 2008 Andreas Persson
 *
 * 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, 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 program; see the file COPYING. If not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#include "gigedit.h"

#include <gtkmm/main.h>
#include <glibmm/main.h>
#include "mainwindow.h"

#include "global.h"

GigEditJob::GigEditJob() {
    _msecs = 100; // 100ms by default
}

int GigEditJob::msecs() {
    return _msecs;
}

namespace {

// State for a gigedit thread.
//
// This class is only used when gigedit is run as a plugin and makes
// sure that there's only one Gtk::Main event loop. The event loop is
// started in a separate thread. The plugin thread just dispatches an
// event to the main loop to open a window and then goes to sleep
// until the window is closed.
//
class GigEditState : public sigc::trackable {
public:
    GigEditState(GigEdit* parent) : parent(parent) { }
    void run(gig::Instrument* pInstrument);

    static std::vector< GigEditJob* > timeoutJobs;
    MainWindow* window;

private:

    // simple condition variable abstraction
    class Cond {
    private:
        bool pred;
        Glib::Mutex mutex;
        Glib::Cond cond;
    public:
        Cond() : pred(false) { }
        void signal() {
            Glib::Mutex::Lock lock(mutex);
            pred = true;
            cond.signal();
        }
        void wait() {
            Glib::Mutex::Lock lock(mutex);
            while (!pred) cond.wait(mutex);
        }
    };

    static Glib::StaticMutex mutex;
    static Glib::Dispatcher* dispatcher;
    static GigEditState* current;

    static void main_loop_run(Cond* intialized);
    static void open_window_static();

    GigEdit* parent;
    Cond open;
    Cond close;
    gig::Instrument* instrument;

    void open_window();
    void close_window();
};

void init_app() {
    static bool process_initialized = false;
    if (!process_initialized) {
        std::cout << "Initializing 3rd party services needed by gigedit.\n"
                  << std::flush;
        setlocale(LC_ALL, "");

#if HAVE_GETTEXT
        bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
        bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
        textdomain(GETTEXT_PACKAGE);
#endif // HAVE_GETTEXT

        // make sure thread_init() is called once and ONLY once per process
        if (!Glib::thread_supported()) Glib::thread_init();

        process_initialized = true;
    }
}

void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
    // the signals of the "GigEdit" class are actually just proxies, that
    // is they simply forward the signals of the internal classes to the
    // outer world
    mainwindow->signal_file_structure_to_be_changed().connect(
        gigedit->signal_file_structure_to_be_changed().make_slot()
    );
    mainwindow->signal_file_structure_changed().connect(
        gigedit->signal_file_structure_changed().make_slot()
    );
    mainwindow->signal_samples_to_be_removed().connect(
        gigedit->signal_samples_to_be_removed().make_slot()
    );
    mainwindow->signal_samples_removed().connect(
        gigedit->signal_samples_removed().make_slot()
    );
    mainwindow->signal_region_to_be_changed().connect(
        gigedit->signal_region_to_be_changed().make_slot()
    );
    mainwindow->signal_region_changed().connect(
        gigedit->signal_region_changed().make_slot()
    );
    mainwindow->signal_dimreg_to_be_changed().connect(
        gigedit->signal_dimreg_to_be_changed().make_slot()
    );
    mainwindow->signal_dimreg_changed().connect(
        gigedit->signal_dimreg_changed().make_slot()
    );
    mainwindow->signal_sample_ref_changed().connect(
        gigedit->signal_sample_ref_changed().make_slot()
    );
}

} // namespace

GigEdit::GigEdit() {
    state = NULL;
}

int GigEdit::run(int argc, char* argv[]) {
    init_app();

    Gtk::Main kit(argc, argv);
    MainWindow window;
    connect_signals(this, &window);
    if (argc >= 2) window.load_file(argv[1]);
    kit.run(window);
    return 0;
}

int GigEdit::run(gig::Instrument* pInstrument) {
    init_app();

    GigEditState state(this);
    this->state = &state;
    state.run(pInstrument);
    this->state = NULL;
    return 0;
}

void GigEdit::add_timeout_job(GigEditJob* job) {
    GigEditState::timeoutJobs.push_back(job);
}

void GigEdit::on_note_on_event(int key, int velocity) {
    if (!this->state) return;
    GigEditState* state = (GigEditState*) this->state;
    state->window->signal_note_on().emit(key, velocity);
}

void GigEdit::on_note_off_event(int key, int velocity) {
    if (!this->state) return;
    GigEditState* state = (GigEditState*) this->state;
    state->window->signal_note_off().emit(key, velocity);
}

sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
    return file_structure_to_be_changed_signal;
}

sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
    return file_structure_changed_signal;
}

sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
    return samples_to_be_removed_signal;
}

sigc::signal<void>& GigEdit::signal_samples_removed() {
    return samples_removed_signal;
}

sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
    return region_to_be_changed_signal;
}

sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
    return region_changed_signal;
}

sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
    return dimreg_to_be_changed_signal;
}

sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
    return dimreg_changed_signal;
}

sigc::signal<void, gig::Sample*/*old*/, gig::Sample*/*new*/>& GigEdit::signal_sample_ref_changed() {
    return sample_ref_changed_signal;
}


Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
Glib::Dispatcher* GigEditState::dispatcher = 0;
GigEditState* GigEditState::current = 0;
std::vector<GigEditJob*> GigEditState::timeoutJobs;

void GigEditState::open_window_static() {
    GigEditState* c = GigEditState::current;
    c->open.signal();
    c->open_window();
}

void GigEditState::open_window() {
    window = new MainWindow();

    connect_signals(parent, window);
    if (instrument) window->load_instrument(instrument);

    window->signal_hide().connect(sigc::mem_fun(this,
                                                &GigEditState::close_window));
    window->present();
}

void GigEditState::close_window() {
    delete window;
    close.signal();
}

void GigEditState::main_loop_run(Cond* initialized) {
    int argc = 1;
    const char* argv_c[] = { "gigedit" };
    char** argv = const_cast<char**>(argv_c);
    Gtk::Main main_loop(argc, argv);

    dispatcher = new Glib::Dispatcher();
    dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
    initialized->signal();

    for (int i = 0; i < GigEditState::timeoutJobs.size(); i++) {
        GigEditJob* job = timeoutJobs[i];
        const Glib::RefPtr<Glib::TimeoutSource> timeout_source =
            Glib::TimeoutSource::create(job->msecs());
        timeout_source->connect(
            sigc::mem_fun(*job, &GigEditJob::runGigEditJob)
        );
        timeout_source->attach(Glib::MainContext::get_default());
    }

    main_loop.run();
}

void GigEditState::run(gig::Instrument* pInstrument) {
    mutex.lock(); // lock access to static variables

    static bool main_loop_started = false;
    if (!main_loop_started) {
        Cond initialized;
        Glib::Thread::create(
            sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
                       &initialized),
            false);
        initialized.wait();
        main_loop_started = true;
    }
    instrument = pInstrument;
    current = this;
    dispatcher->emit();
    open.wait(); // wait until the GUI thread has read current
    mutex.unlock();
    close.wait(); // sleep until window is closed
}
1	/*
2	* Copyright (C) 2007, 2008 Andreas Persson
3	*
4	* This program is free software; you can redistribute it and/or
5	* modify it under the terms of the GNU General Public License as
6	* published by the Free Software Foundation; either version 2, or (at
7	* your option) any later version.
8	*
9	* This program is distributed in the hope that it will be useful, but
10	* WITHOUT ANY WARRANTY; without even the implied warranty of
11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12	* General Public License for more details.
13	*
14	* You should have received a copy of the GNU General Public License
15	* along with program; see the file COPYING. If not, write to the Free
16	* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
17	* 02110-1301 USA.
18	*/
19
20	#include "gigedit.h"
21
22	#include <gtkmm/main.h>
23	#include <glibmm/main.h>
24	#include "mainwindow.h"
25
26	#include "global.h"
27
28	GigEditJob::GigEditJob() {
29	_msecs = 100; // 100ms by default
30	}
31
32	int GigEditJob::msecs() {
33	return _msecs;
34	}
35
36	namespace {
37
38	// State for a gigedit thread.
39	//
40	// This class is only used when gigedit is run as a plugin and makes
41	// sure that there's only one Gtk::Main event loop. The event loop is
42	// started in a separate thread. The plugin thread just dispatches an
43	// event to the main loop to open a window and then goes to sleep
44	// until the window is closed.
45	//
46	class GigEditState : public sigc::trackable {
47	public:
48	GigEditState(GigEdit* parent) : parent(parent) { }
49	void run(gig::Instrument* pInstrument);
50
51	static std::vector< GigEditJob* > timeoutJobs;
52	MainWindow* window;
53
54	private:
55
56	// simple condition variable abstraction
57	class Cond {
58	private:
59	bool pred;
60	Glib::Mutex mutex;
61	Glib::Cond cond;
62	public:
63	Cond() : pred(false) { }
64	void signal() {
65	Glib::Mutex::Lock lock(mutex);
66	pred = true;
67	cond.signal();
68	}
69	void wait() {
70	Glib::Mutex::Lock lock(mutex);
71	while (!pred) cond.wait(mutex);
72	}
73	};
74
75	static Glib::StaticMutex mutex;
76	static Glib::Dispatcher* dispatcher;
77	static GigEditState* current;
78
79	static void main_loop_run(Cond* intialized);
80	static void open_window_static();
81
82	GigEdit* parent;
83	Cond open;
84	Cond close;
85	gig::Instrument* instrument;
86
87	void open_window();
88	void close_window();
89	};
90
91	void init_app() {
92	static bool process_initialized = false;
93	if (!process_initialized) {
94	std::cout << "Initializing 3rd party services needed by gigedit.\n"
95	<< std::flush;
96	setlocale(LC_ALL, "");
97
98	#if HAVE_GETTEXT
99	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
100	bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
101	textdomain(GETTEXT_PACKAGE);
102	#endif // HAVE_GETTEXT
103
104	// make sure thread_init() is called once and ONLY once per process
105	if (!Glib::thread_supported()) Glib::thread_init();
106
107	process_initialized = true;
108	}
109	}
110
111	void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
112	// the signals of the "GigEdit" class are actually just proxies, that
113	// is they simply forward the signals of the internal classes to the
114	// outer world
115	mainwindow->signal_file_structure_to_be_changed().connect(
116	gigedit->signal_file_structure_to_be_changed().make_slot()
117	);
118	mainwindow->signal_file_structure_changed().connect(
119	gigedit->signal_file_structure_changed().make_slot()
120	);
121	mainwindow->signal_samples_to_be_removed().connect(
122	gigedit->signal_samples_to_be_removed().make_slot()
123	);
124	mainwindow->signal_samples_removed().connect(
125	gigedit->signal_samples_removed().make_slot()
126	);
127	mainwindow->signal_region_to_be_changed().connect(
128	gigedit->signal_region_to_be_changed().make_slot()
129	);
130	mainwindow->signal_region_changed().connect(
131	gigedit->signal_region_changed().make_slot()
132	);
133	mainwindow->signal_dimreg_to_be_changed().connect(
134	gigedit->signal_dimreg_to_be_changed().make_slot()
135	);
136	mainwindow->signal_dimreg_changed().connect(
137	gigedit->signal_dimreg_changed().make_slot()
138	);
139	mainwindow->signal_sample_ref_changed().connect(
140	gigedit->signal_sample_ref_changed().make_slot()
141	);
142	}
143
144	} // namespace
145
146	GigEdit::GigEdit() {
147	state = NULL;
148	}
149
150	int GigEdit::run(int argc, char* argv[]) {
151	init_app();
152
153	Gtk::Main kit(argc, argv);
154	MainWindow window;
155	connect_signals(this, &window);
156	if (argc >= 2) window.load_file(argv[1]);
157	kit.run(window);
158	return 0;
159	}
160
161	int GigEdit::run(gig::Instrument* pInstrument) {
162	init_app();
163
164	GigEditState state(this);
165	this->state = &state;
166	state.run(pInstrument);
167	this->state = NULL;
168	return 0;
169	}
170
171	void GigEdit::add_timeout_job(GigEditJob* job) {
172	GigEditState::timeoutJobs.push_back(job);
173	}
174
175	void GigEdit::on_note_on_event(int key, int velocity) {
176	if (!this->state) return;
177	GigEditState* state = (GigEditState*) this->state;
178	state->window->signal_note_on().emit(key, velocity);
179	}
180
181	void GigEdit::on_note_off_event(int key, int velocity) {
182	if (!this->state) return;
183	GigEditState* state = (GigEditState*) this->state;
184	state->window->signal_note_off().emit(key, velocity);
185	}
186
187	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
188	return file_structure_to_be_changed_signal;
189	}
190
191	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
192	return file_structure_changed_signal;
193	}
194
195	sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
196	return samples_to_be_removed_signal;
197	}
198
199	sigc::signal<void>& GigEdit::signal_samples_removed() {
200	return samples_removed_signal;
201	}
202
203	sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
204	return region_to_be_changed_signal;
205	}
206
207	sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
208	return region_changed_signal;
209	}
210
211	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
212	return dimreg_to_be_changed_signal;
213	}
214
215	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
216	return dimreg_changed_signal;
217	}
218
219	sigc::signal<void, gig::Sample/old/, gig::Sample/new/>& GigEdit::signal_sample_ref_changed() {
220	return sample_ref_changed_signal;
221	}
222
223
224	Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
225	Glib::Dispatcher* GigEditState::dispatcher = 0;
226	GigEditState* GigEditState::current = 0;
227	std::vector<GigEditJob*> GigEditState::timeoutJobs;
228
229	void GigEditState::open_window_static() {
230	GigEditState* c = GigEditState::current;
231	c->open.signal();
232	c->open_window();
233	}
234
235	void GigEditState::open_window() {
236	window = new MainWindow();
237
238	connect_signals(parent, window);
239	if (instrument) window->load_instrument(instrument);
240
241	window->signal_hide().connect(sigc::mem_fun(this,
242	&GigEditState::close_window));
243	window->present();
244	}
245
246	void GigEditState::close_window() {
247	delete window;
248	close.signal();
249	}
250
251	void GigEditState::main_loop_run(Cond* initialized) {
252	int argc = 1;
253	const char* argv_c[] = { "gigedit" };
254	char argv = const_cast<char>(argv_c);
255	Gtk::Main main_loop(argc, argv);
256
257	dispatcher = new Glib::Dispatcher();
258	dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
259	initialized->signal();
260
261	for (int i = 0; i < GigEditState::timeoutJobs.size(); i++) {
262	GigEditJob* job = timeoutJobs[i];
263	const Glib::RefPtr<Glib::TimeoutSource> timeout_source =
264	Glib::TimeoutSource::create(job->msecs());
265	timeout_source->connect(
266	sigc::mem_fun(*job, &GigEditJob::runGigEditJob)
267	);
268	timeout_source->attach(Glib::MainContext::get_default());
269	}
270
271	main_loop.run();
272	}
273
274	void GigEditState::run(gig::Instrument* pInstrument) {
275	mutex.lock(); // lock access to static variables
276
277	static bool main_loop_started = false;
278	if (!main_loop_started) {
279	Cond initialized;
280	Glib::Thread::create(
281	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
282	&initialized),
283	false);
284	initialized.wait();
285	main_loop_started = true;
286	}
287	instrument = pInstrument;
288	current = this;
289	dispatcher->emit();
290	open.wait(); // wait until the GUI thread has read current
291	mutex.unlock();
292	close.wait(); // sleep until window is closed
293	}