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"

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);

    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::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;

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();

    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	namespace {
29
30	// State for a gigedit thread.
31	//
32	// This class is only used when gigedit is run as a plugin and makes
33	// sure that there's only one Gtk::Main event loop. The event loop is
34	// started in a separate thread. The plugin thread just dispatches an
35	// event to the main loop to open a window and then goes to sleep
36	// until the window is closed.
37	//
38	class GigEditState : public sigc::trackable {
39	public:
40	GigEditState(GigEdit* parent) : parent(parent) { }
41	void run(gig::Instrument* pInstrument);
42
43	MainWindow* window;
44
45	private:
46
47	// simple condition variable abstraction
48	class Cond {
49	private:
50	bool pred;
51	Glib::Mutex mutex;
52	Glib::Cond cond;
53	public:
54	Cond() : pred(false) { }
55	void signal() {
56	Glib::Mutex::Lock lock(mutex);
57	pred = true;
58	cond.signal();
59	}
60	void wait() {
61	Glib::Mutex::Lock lock(mutex);
62	while (!pred) cond.wait(mutex);
63	}
64	};
65
66	static Glib::StaticMutex mutex;
67	static Glib::Dispatcher* dispatcher;
68	static GigEditState* current;
69
70	static void main_loop_run(Cond* intialized);
71	static void open_window_static();
72
73	GigEdit* parent;
74	Cond open;
75	Cond close;
76	gig::Instrument* instrument;
77
78	void open_window();
79	void close_window();
80	};
81
82	void init_app() {
83	static bool process_initialized = false;
84	if (!process_initialized) {
85	std::cout << "Initializing 3rd party services needed by gigedit.\n"
86	<< std::flush;
87	setlocale(LC_ALL, "");
88
89	#if HAVE_GETTEXT
90	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
91	bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
92	textdomain(GETTEXT_PACKAGE);
93	#endif // HAVE_GETTEXT
94
95	// make sure thread_init() is called once and ONLY once per process
96	if (!Glib::thread_supported()) Glib::thread_init();
97
98	process_initialized = true;
99	}
100	}
101
102	void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
103	// the signals of the "GigEdit" class are actually just proxies, that
104	// is they simply forward the signals of the internal classes to the
105	// outer world
106	mainwindow->signal_file_structure_to_be_changed().connect(
107	gigedit->signal_file_structure_to_be_changed().make_slot()
108	);
109	mainwindow->signal_file_structure_changed().connect(
110	gigedit->signal_file_structure_changed().make_slot()
111	);
112	mainwindow->signal_samples_to_be_removed().connect(
113	gigedit->signal_samples_to_be_removed().make_slot()
114	);
115	mainwindow->signal_samples_removed().connect(
116	gigedit->signal_samples_removed().make_slot()
117	);
118	mainwindow->signal_region_to_be_changed().connect(
119	gigedit->signal_region_to_be_changed().make_slot()
120	);
121	mainwindow->signal_region_changed().connect(
122	gigedit->signal_region_changed().make_slot()
123	);
124	mainwindow->signal_dimreg_to_be_changed().connect(
125	gigedit->signal_dimreg_to_be_changed().make_slot()
126	);
127	mainwindow->signal_dimreg_changed().connect(
128	gigedit->signal_dimreg_changed().make_slot()
129	);
130	mainwindow->signal_sample_ref_changed().connect(
131	gigedit->signal_sample_ref_changed().make_slot()
132	);
133	}
134
135	} // namespace
136
137	GigEdit::GigEdit() {
138	state = NULL;
139	}
140
141	int GigEdit::run(int argc, char* argv[]) {
142	init_app();
143
144	Gtk::Main kit(argc, argv);
145	MainWindow window;
146	connect_signals(this, &window);
147	if (argc >= 2) window.load_file(argv[1]);
148	kit.run(window);
149	return 0;
150	}
151
152	int GigEdit::run(gig::Instrument* pInstrument) {
153	init_app();
154
155	GigEditState state(this);
156	this->state = &state;
157	state.run(pInstrument);
158	this->state = NULL;
159	return 0;
160	}
161
162	void GigEdit::on_note_on_event(int key, int velocity) {
163	if (!this->state) return;
164	GigEditState* state = (GigEditState*) this->state;
165	state->window->signal_note_on().emit(key, velocity);
166	}
167
168	void GigEdit::on_note_off_event(int key, int velocity) {
169	if (!this->state) return;
170	GigEditState* state = (GigEditState*) this->state;
171	state->window->signal_note_off().emit(key, velocity);
172	}
173
174	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
175	return file_structure_to_be_changed_signal;
176	}
177
178	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
179	return file_structure_changed_signal;
180	}
181
182	sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
183	return samples_to_be_removed_signal;
184	}
185
186	sigc::signal<void>& GigEdit::signal_samples_removed() {
187	return samples_removed_signal;
188	}
189
190	sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
191	return region_to_be_changed_signal;
192	}
193
194	sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
195	return region_changed_signal;
196	}
197
198	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
199	return dimreg_to_be_changed_signal;
200	}
201
202	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
203	return dimreg_changed_signal;
204	}
205
206	sigc::signal<void, gig::Sample/old/, gig::Sample/new/>& GigEdit::signal_sample_ref_changed() {
207	return sample_ref_changed_signal;
208	}
209
210
211	Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
212	Glib::Dispatcher* GigEditState::dispatcher = 0;
213	GigEditState* GigEditState::current = 0;
214
215	void GigEditState::open_window_static() {
216	GigEditState* c = GigEditState::current;
217	c->open.signal();
218	c->open_window();
219	}
220
221	void GigEditState::open_window() {
222	window = new MainWindow();
223
224	connect_signals(parent, window);
225	if (instrument) window->load_instrument(instrument);
226
227	window->signal_hide().connect(sigc::mem_fun(this,
228	&GigEditState::close_window));
229	window->present();
230	}
231
232	void GigEditState::close_window() {
233	delete window;
234	close.signal();
235	}
236
237	void GigEditState::main_loop_run(Cond* initialized) {
238	int argc = 1;
239	const char* argv_c[] = { "gigedit" };
240	char argv = const_cast<char>(argv_c);
241	Gtk::Main main_loop(argc, argv);
242
243	dispatcher = new Glib::Dispatcher();
244	dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
245	initialized->signal();
246
247	main_loop.run();
248	}
249
250	void GigEditState::run(gig::Instrument* pInstrument) {
251	mutex.lock(); // lock access to static variables
252
253	static bool main_loop_started = false;
254	if (!main_loop_started) {
255	Cond initialized;
256	Glib::Thread::create(
257	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
258	&initialized),
259	false);
260	initialized.wait();
261	main_loop_started = true;
262	}
263	instrument = pInstrument;
264	current = this;
265	dispatcher->emit();
266	open.wait(); // wait until the GUI thread has read current
267	mutex.unlock();
268	close.wait(); // sleep until window is closed
269	}