src/gigedit/gigedit.cpp

/*
 * Copyright (C) 2007-2009 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();
};

#ifdef WIN32
HINSTANCE gigedit_dll_handle = 0;
#endif

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

#ifdef WIN32
#if GLIB_CHECK_VERSION(2, 16, 0)
        gchar* root =
            g_win32_get_package_installation_directory_of_module(gigedit_dll_handle);
#else
        gchar* root =
            g_win32_get_package_installation_directory(NULL, NULL);
#endif
        gchar* temp = g_build_filename(root, "/share/locale", NULL);
        g_free(root);
        gchar* localedir = g_win32_locale_filename_from_utf8(temp);
        g_free(temp);
        bindtextdomain(GETTEXT_PACKAGE, localedir);
        g_free(localedir);
#else
        bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
#endif
        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_changed().connect(
        gigedit->signal_sample_changed().make_slot()
    );
    mainwindow->signal_sample_ref_changed().connect(
        gigedit->signal_sample_ref_changed().make_slot()
    );
    mainwindow->signal_keyboard_key_hit().connect(
        gigedit->signal_keyboard_key_hit().make_slot()
    );
    mainwindow->signal_keyboard_key_released().connect(
        gigedit->signal_keyboard_key_released().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*>& GigEdit::signal_sample_changed() {
    return sample_changed_signal;
}

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

sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_hit() {
    return keyboard_key_hit_signal;
}

sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_released() {
    return keyboard_key_released_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
}

#if defined(WIN32)
extern "C" {
    BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
    {
        switch (reason) {
        case DLL_PROCESS_ATTACH:
            gigedit_dll_handle = instance;
            break;
        }
        return TRUE;
    }
}
#endif
1	/*
2	* Copyright (C) 2007-2009 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	#ifdef WIN32
83	HINSTANCE gigedit_dll_handle = 0;
84	#endif
85
86	void init_app() {
87	static bool process_initialized = false;
88	if (!process_initialized) {
89	std::cout << "Initializing 3rd party services needed by gigedit.\n"
90	<< std::flush;
91	setlocale(LC_ALL, "");
92
93	#if HAVE_GETTEXT
94
95	#ifdef WIN32
96	#if GLIB_CHECK_VERSION(2, 16, 0)
97	gchar* root =
98	g_win32_get_package_installation_directory_of_module(gigedit_dll_handle);
99	#else
100	gchar* root =
101	g_win32_get_package_installation_directory(NULL, NULL);
102	#endif
103	gchar* temp = g_build_filename(root, "/share/locale", NULL);
104	g_free(root);
105	gchar* localedir = g_win32_locale_filename_from_utf8(temp);
106	g_free(temp);
107	bindtextdomain(GETTEXT_PACKAGE, localedir);
108	g_free(localedir);
109	#else
110	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
111	#endif
112	bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
113	textdomain(GETTEXT_PACKAGE);
114	#endif // HAVE_GETTEXT
115
116	// make sure thread_init() is called once and ONLY once per process
117	if (!Glib::thread_supported()) Glib::thread_init();
118
119	process_initialized = true;
120	}
121	}
122
123	void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
124	// the signals of the "GigEdit" class are actually just proxies, that
125	// is they simply forward the signals of the internal classes to the
126	// outer world
127	mainwindow->signal_file_structure_to_be_changed().connect(
128	gigedit->signal_file_structure_to_be_changed().make_slot()
129	);
130	mainwindow->signal_file_structure_changed().connect(
131	gigedit->signal_file_structure_changed().make_slot()
132	);
133	mainwindow->signal_samples_to_be_removed().connect(
134	gigedit->signal_samples_to_be_removed().make_slot()
135	);
136	mainwindow->signal_samples_removed().connect(
137	gigedit->signal_samples_removed().make_slot()
138	);
139	mainwindow->signal_region_to_be_changed().connect(
140	gigedit->signal_region_to_be_changed().make_slot()
141	);
142	mainwindow->signal_region_changed().connect(
143	gigedit->signal_region_changed().make_slot()
144	);
145	mainwindow->signal_dimreg_to_be_changed().connect(
146	gigedit->signal_dimreg_to_be_changed().make_slot()
147	);
148	mainwindow->signal_dimreg_changed().connect(
149	gigedit->signal_dimreg_changed().make_slot()
150	);
151	mainwindow->signal_sample_changed().connect(
152	gigedit->signal_sample_changed().make_slot()
153	);
154	mainwindow->signal_sample_ref_changed().connect(
155	gigedit->signal_sample_ref_changed().make_slot()
156	);
157	mainwindow->signal_keyboard_key_hit().connect(
158	gigedit->signal_keyboard_key_hit().make_slot()
159	);
160	mainwindow->signal_keyboard_key_released().connect(
161	gigedit->signal_keyboard_key_released().make_slot()
162	);
163	}
164
165	} // namespace
166
167	GigEdit::GigEdit() {
168	state = NULL;
169	}
170
171	int GigEdit::run(int argc, char* argv[]) {
172	init_app();
173
174	Gtk::Main kit(argc, argv);
175	MainWindow window;
176	connect_signals(this, &window);
177	if (argc >= 2) window.load_file(argv[1]);
178	kit.run(window);
179	return 0;
180	}
181
182	int GigEdit::run(gig::Instrument* pInstrument) {
183	init_app();
184
185	GigEditState state(this);
186	this->state = &state;
187	state.run(pInstrument);
188	this->state = NULL;
189	return 0;
190	}
191
192	void GigEdit::on_note_on_event(int key, int velocity) {
193	if (!this->state) return;
194	GigEditState* state = (GigEditState*) this->state;
195	state->window->signal_note_on().emit(key, velocity);
196	}
197
198	void GigEdit::on_note_off_event(int key, int velocity) {
199	if (!this->state) return;
200	GigEditState* state = (GigEditState*) this->state;
201	state->window->signal_note_off().emit(key, velocity);
202	}
203
204	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
205	return file_structure_to_be_changed_signal;
206	}
207
208	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
209	return file_structure_changed_signal;
210	}
211
212	sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
213	return samples_to_be_removed_signal;
214	}
215
216	sigc::signal<void>& GigEdit::signal_samples_removed() {
217	return samples_removed_signal;
218	}
219
220	sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
221	return region_to_be_changed_signal;
222	}
223
224	sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
225	return region_changed_signal;
226	}
227
228	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
229	return dimreg_to_be_changed_signal;
230	}
231
232	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
233	return dimreg_changed_signal;
234	}
235
236	sigc::signal<void, gig::Sample*>& GigEdit::signal_sample_changed() {
237	return sample_changed_signal;
238	}
239
240	sigc::signal<void, gig::Sample/old/, gig::Sample/new/>& GigEdit::signal_sample_ref_changed() {
241	return sample_ref_changed_signal;
242	}
243
244	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_hit() {
245	return keyboard_key_hit_signal;
246	}
247
248	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_released() {
249	return keyboard_key_released_signal;
250	}
251
252	Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
253	Glib::Dispatcher* GigEditState::dispatcher = 0;
254	GigEditState* GigEditState::current = 0;
255
256	void GigEditState::open_window_static() {
257	GigEditState* c = GigEditState::current;
258	c->open.signal();
259	c->open_window();
260	}
261
262	void GigEditState::open_window() {
263	window = new MainWindow();
264
265	connect_signals(parent, window);
266	if (instrument) window->load_instrument(instrument);
267
268	window->signal_hide().connect(sigc::mem_fun(this,
269	&GigEditState::close_window));
270	window->present();
271	}
272
273	void GigEditState::close_window() {
274	delete window;
275	close.signal();
276	}
277
278	void GigEditState::main_loop_run(Cond* initialized) {
279	int argc = 1;
280	const char* argv_c[] = { "gigedit" };
281	char argv = const_cast<char>(argv_c);
282	Gtk::Main main_loop(argc, argv);
283
284	dispatcher = new Glib::Dispatcher();
285	dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
286	initialized->signal();
287
288	main_loop.run();
289	}
290
291	void GigEditState::run(gig::Instrument* pInstrument) {
292	mutex.lock(); // lock access to static variables
293
294	static bool main_loop_started = false;
295	if (!main_loop_started) {
296	Cond initialized;
297	Glib::Thread::create(
298	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
299	&initialized),
300	false);
301	initialized.wait();
302	main_loop_started = true;
303	}
304	instrument = pInstrument;
305	current = this;
306	dispatcher->emit();
307	open.wait(); // wait until the GUI thread has read current
308	mutex.unlock();
309	close.wait(); // sleep until window is closed
310	}
311
312	#if defined(WIN32)
313	extern "C" {
314	BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
315	{
316	switch (reason) {
317	case DLL_PROCESS_ATTACH:
318	gigedit_dll_handle = instance;
319	break;
320	}
321	return TRUE;
322	}
323	}
324	#endif