src/gigedit/gigedit.cpp

/*
 * Copyright (C) 2007-2013 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 <glibmm/dispatcher.h>
#include <glibmm/main.h>
#include <gtkmm/main.h>

#if defined(__APPLE__)
# include <CoreFoundation/CoreFoundation.h>
# include "MacHelper.h"
#endif

#include "mainwindow.h"

#include "global.h"

#ifdef __APPLE__
#include <dlfcn.h>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#endif

//TODO: (hopefully) just a temporary nasty hack for launching gigedit on the main thread on Mac (see comments below in this file for details)
#if defined(__APPLE__) // the following global external variables are defined in LinuxSampler's global_private.cpp ...
extern bool g_mainThreadCallbackSupported;
extern void (*g_mainThreadCallback)(void* info);
extern void* g_mainThreadCallbackInfo;
extern bool g_fireMainThreadCallback;
#endif

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), instrument(NULL) { }
    void run(gig::Instrument* pInstrument);

    MainWindow* window;

private:

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

#ifdef OLD_THREADS
    static Glib::StaticMutex mutex;
#else
    static Glib::Threads::Mutex mutex;
#endif
    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;
    Cond initialized;
    gig::Instrument* instrument;

    void open_window();
    void close_window();
#if defined(__APPLE__)
    static void runInCFMainLoop(void* info);
#endif
};

#ifdef WIN32
HINSTANCE gigedit_dll_handle = 0;
#endif

#ifdef __APPLE__
std::string gigedit_localedir;
#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, "");

#ifdef __APPLE__
        // Look for pango.modules, gdk-pixbuf.loaders and locale files
        // under the same dir as the gigedit dylib is installed in.
        Dl_info info;
        if (dladdr((void*)&init_app, &info)) {
            std::string libdir = Glib::path_get_dirname(info.dli_fname);

            if (Glib::getenv("PANGO_SYSCONFDIR") == "" &&
                Glib::file_test(Glib::build_filename(libdir,
                                                     "pango/pango.modules"),
                                Glib::FILE_TEST_EXISTS)) {
                Glib::setenv("PANGO_SYSCONFDIR", libdir, true);
            }
            if (Glib::getenv("GDK_PIXBUF_MODULE_FILE") == "") {
                std::string module_file =
                    Glib::build_filename(libdir,
                                         "gtk-2.0/gdk-pixbuf.loaders");
                if (Glib::file_test(module_file, Glib::FILE_TEST_EXISTS)) {
                    Glib::setenv("GDK_PIXBUF_MODULE_FILE", module_file, true);
                }
            }
  //FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
  //#if HAVE_GETTEXT
            std::string localedir = Glib::build_filename(libdir, "locale");
            if (Glib::file_test(localedir, Glib::FILE_TEST_EXISTS)) {
                gigedit_localedir = localedir;
                bindtextdomain(GETTEXT_PACKAGE, gigedit_localedir.c_str());
            } else {
                bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
            }
  //#endif
        }

        // The gtk file dialog stores its recent files state in
        // ~/.local/share
        g_mkdir_with_parents(
            Glib::build_filename(Glib::get_home_dir(),
                                 ".local/share").c_str(), 0777);
#endif // __APPLE__

//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
#if (HAVE_GETTEXT || defined(__APPLE__))

  #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);
  #elif !defined(__APPLE__)
        bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
  #endif
        bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
        textdomain(GETTEXT_PACKAGE);
#endif // HAVE_GETTEXT

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

//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
#if (/*HAVE_GETTEXT &&*/ defined(__APPLE__))
    // Gtk::Main binds the gtk locale to a possible non-existent
    // directory. If we have bundled gtk locale files, we rebind here,
    // after the Gtk::Main constructor.
    if (!gigedit_localedir.empty()) {
        bindtextdomain("gtk20", gigedit_localedir.c_str());
    }
#endif

    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;
}

#ifdef OLD_THREADS
Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
#else
Glib::Threads::Mutex GigEditState::mutex;
#endif
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);
//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
#if (/*HAVE_GETTEXT &&*/ defined(__APPLE__))
    if (!gigedit_localedir.empty()) {
        bindtextdomain("gtk20", gigedit_localedir.c_str());
    }
#endif

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

    main_loop.run();
}

#if defined(__APPLE__)

void GigEditState::runInCFMainLoop(void* info) {
    printf("runInCFMainLoop() entered\n"); fflush(stdout);
    GigEditState* state = static_cast<GigEditState*>(info);
    state->main_loop_run(
        &state->initialized
    );
    printf("runInCFMainLoop() left\n"); fflush(stdout);
}

#endif // __APPLE__

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

    static bool main_loop_started = false;
    instrument = pInstrument;
    if (!main_loop_started) {
#if defined(__APPLE__)
        // spawn GUI on main thread :
        //     On OS X the Gtk GUI can only be launched on a process's "main"
        //     thread. When trying to launch the Gtk GUI on any other thread,
        //     there will only be a white box, because the GUI would not receive
        //     any events, since it would listen to the wrong system event loop.
        //     So far we haven't investigated whether there is any kind of
        //     circumvention to allow doing that also on other OS X threads.
        {
            // In case the sampler was launched as standalone sampler (not as
            // plugin), use the following global callback variable hack ...
            if (g_mainThreadCallbackSupported) {
                printf("Setting callback ...\n"); fflush(stdout);
                g_mainThreadCallback = runInCFMainLoop;
                g_mainThreadCallbackInfo = this;
                g_fireMainThreadCallback = true;
                printf("Callback variables set.\n"); fflush(stdout);
            } else { // Sampler was launched as (i.e. AU / VST) plugin ...
                // When the sampler was launched as plugin, we have no idea
                // whether any sampler thread is the process's "main" thread.
                // So that's why we are trying to use Apple's API for trying to
                // launch our callback function on the process's main thread.
                // However this will only work, if the plugin host application
                // established a CF event loop, that is if the application is
                // using Cocoa for its GUI. For other host applications the
                // callback will never be executed and thus gigedit would not
                // popup.
                
                // should be pretty much the same as the Objective-C solution below with macHelperRunCFuncOnMainThread()
                /*CFRunLoopSourceContext sourceContext = CFRunLoopSourceContext();
                sourceContext.info = this;
                sourceContext.perform = runInCFMainLoop;
                printf("CFRunLoopSourceCreate\n"); fflush(stdout);
                CFRunLoopSourceRef source = CFRunLoopSourceCreate(
                    kCFAllocatorDefault, // allocator
                    1, // priority
                    &sourceContext
                );
                printf("CFRunLoopAddSource\n"); fflush(stdout);
                CFRunLoopAddSource(CFRunLoopGetMain(), source, kCFRunLoopDefaultMode);
                CFRelease(source);*/
                
                // use Apple's Objective-C API to call our callback function
                // 'runInCFMainLoop()' on the process's "main" thread
                macHelperRunCFuncOnMainThread(runInCFMainLoop, this);
            }
        }
#else
  #ifdef OLD_THREADS
        Glib::Thread::create(
            sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
                       &initialized),
            false);
  #else
        Glib::Threads::Thread::create(
            sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
                       &initialized));
  #endif
#endif
        printf("Waiting for GUI being initialized (on main thread) ....\n"); fflush(stdout);
        initialized.wait();
        printf("GUI is now initialized. Everything done.\n"); fflush(stdout);
        main_loop_started = true;
    }
    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) 2007-2013 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 <glibmm/dispatcher.h>
23	#include <glibmm/main.h>
24	#include <gtkmm/main.h>
25
26	#if defined(__APPLE__)
27	# include <CoreFoundation/CoreFoundation.h>
28	# include "MacHelper.h"
29	#endif
30
31	#include "mainwindow.h"
32
33	#include "global.h"
34
35	#ifdef __APPLE__
36	#include <dlfcn.h>
37	#include <glibmm/fileutils.h>
38	#include <glibmm/miscutils.h>
39	#endif
40
41	//TODO: (hopefully) just a temporary nasty hack for launching gigedit on the main thread on Mac (see comments below in this file for details)
42	#if defined(__APPLE__) // the following global external variables are defined in LinuxSampler's global_private.cpp ...
43	extern bool g_mainThreadCallbackSupported;
44	extern void (g_mainThreadCallback)(void info);
45	extern void* g_mainThreadCallbackInfo;
46	extern bool g_fireMainThreadCallback;
47	#endif
48
49	namespace {
50
51	// State for a gigedit thread.
52	//
53	// This class is only used when gigedit is run as a plugin and makes
54	// sure that there's only one Gtk::Main event loop. The event loop is
55	// started in a separate thread. The plugin thread just dispatches an
56	// event to the main loop to open a window and then goes to sleep
57	// until the window is closed.
58	//
59	class GigEditState : public sigc::trackable {
60	public:
61	GigEditState(GigEdit* parent) : parent(parent), instrument(NULL) { }
62	void run(gig::Instrument* pInstrument);
63
64	MainWindow* window;
65
66	private:
67
68	// simple condition variable abstraction
69	class Cond {
70	private:
71	bool pred;
72	Glib::Threads::Mutex mutex;
73	Glib::Threads::Cond cond;
74	public:
75	Cond() : pred(false) { }
76	void signal() {
77	Glib::Threads::Mutex::Lock lock(mutex);
78	pred = true;
79	cond.signal();
80	}
81	void wait() {
82	Glib::Threads::Mutex::Lock lock(mutex);
83	while (!pred) cond.wait(mutex);
84	}
85	};
86
87	#ifdef OLD_THREADS
88	static Glib::StaticMutex mutex;
89	#else
90	static Glib::Threads::Mutex mutex;
91	#endif
92	static Glib::Dispatcher* dispatcher;
93	static GigEditState* current;
94
95	static void main_loop_run(Cond* intialized);
96	static void open_window_static();
97
98	GigEdit* parent;
99	Cond open;
100	Cond close;
101	Cond initialized;
102	gig::Instrument* instrument;
103
104	void open_window();
105	void close_window();
106	#if defined(__APPLE__)
107	static void runInCFMainLoop(void* info);
108	#endif
109	};
110
111	#ifdef WIN32
112	HINSTANCE gigedit_dll_handle = 0;
113	#endif
114
115	#ifdef __APPLE__
116	std::string gigedit_localedir;
117	#endif
118
119	void init_app() {
120	static bool process_initialized = false;
121	if (!process_initialized) {
122	std::cout << "Initializing 3rd party services needed by gigedit.\n"
123	<< std::flush;
124	setlocale(LC_ALL, "");
125
126	#ifdef __APPLE__
127	// Look for pango.modules, gdk-pixbuf.loaders and locale files
128	// under the same dir as the gigedit dylib is installed in.
129	Dl_info info;
130	if (dladdr((void*)&init_app, &info)) {
131	std::string libdir = Glib::path_get_dirname(info.dli_fname);
132
133	if (Glib::getenv("PANGO_SYSCONFDIR") == "" &&
134	Glib::file_test(Glib::build_filename(libdir,
135	"pango/pango.modules"),
136	Glib::FILE_TEST_EXISTS)) {
137	Glib::setenv("PANGO_SYSCONFDIR", libdir, true);
138	}
139	if (Glib::getenv("GDK_PIXBUF_MODULE_FILE") == "") {
140	std::string module_file =
141	Glib::build_filename(libdir,
142	"gtk-2.0/gdk-pixbuf.loaders");
143	if (Glib::file_test(module_file, Glib::FILE_TEST_EXISTS)) {
144	Glib::setenv("GDK_PIXBUF_MODULE_FILE", module_file, true);
145	}
146	}
147	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
148	//#if HAVE_GETTEXT
149	std::string localedir = Glib::build_filename(libdir, "locale");
150	if (Glib::file_test(localedir, Glib::FILE_TEST_EXISTS)) {
151	gigedit_localedir = localedir;
152	bindtextdomain(GETTEXT_PACKAGE, gigedit_localedir.c_str());
153	} else {
154	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
155	}
156	//#endif
157	}
158
159	// The gtk file dialog stores its recent files state in
160	// ~/.local/share
161	g_mkdir_with_parents(
162	Glib::build_filename(Glib::get_home_dir(),
163	".local/share").c_str(), 0777);
164	#endif // __APPLE__
165
166	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
167	#if (HAVE_GETTEXT \|\| defined(__APPLE__))
168
169	#ifdef WIN32
170	#if GLIB_CHECK_VERSION(2, 16, 0)
171	gchar* root =
172	g_win32_get_package_installation_directory_of_module(gigedit_dll_handle);
173	#else
174	gchar* root =
175	g_win32_get_package_installation_directory(NULL, NULL);
176	#endif
177	gchar* temp = g_build_filename(root, "/share/locale", NULL);
178	g_free(root);
179	gchar* localedir = g_win32_locale_filename_from_utf8(temp);
180	g_free(temp);
181	bindtextdomain(GETTEXT_PACKAGE, localedir);
182	g_free(localedir);
183	#elif !defined(__APPLE__)
184	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
185	#endif
186	bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
187	textdomain(GETTEXT_PACKAGE);
188	#endif // HAVE_GETTEXT
189
190	#ifdef OLD_THREADS
191	// make sure thread_init() is called once and ONLY once per process
192	if (!Glib::thread_supported()) Glib::thread_init();
193	#endif
194	process_initialized = true;
195	}
196	}
197
198	void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
199	// the signals of the "GigEdit" class are actually just proxies, that
200	// is they simply forward the signals of the internal classes to the
201	// outer world
202	mainwindow->signal_file_structure_to_be_changed().connect(
203	gigedit->signal_file_structure_to_be_changed().make_slot()
204	);
205	mainwindow->signal_file_structure_changed().connect(
206	gigedit->signal_file_structure_changed().make_slot()
207	);
208	mainwindow->signal_samples_to_be_removed().connect(
209	gigedit->signal_samples_to_be_removed().make_slot()
210	);
211	mainwindow->signal_samples_removed().connect(
212	gigedit->signal_samples_removed().make_slot()
213	);
214	mainwindow->signal_region_to_be_changed().connect(
215	gigedit->signal_region_to_be_changed().make_slot()
216	);
217	mainwindow->signal_region_changed().connect(
218	gigedit->signal_region_changed().make_slot()
219	);
220	mainwindow->signal_dimreg_to_be_changed().connect(
221	gigedit->signal_dimreg_to_be_changed().make_slot()
222	);
223	mainwindow->signal_dimreg_changed().connect(
224	gigedit->signal_dimreg_changed().make_slot()
225	);
226	mainwindow->signal_sample_changed().connect(
227	gigedit->signal_sample_changed().make_slot()
228	);
229	mainwindow->signal_sample_ref_changed().connect(
230	gigedit->signal_sample_ref_changed().make_slot()
231	);
232	mainwindow->signal_keyboard_key_hit().connect(
233	gigedit->signal_keyboard_key_hit().make_slot()
234	);
235	mainwindow->signal_keyboard_key_released().connect(
236	gigedit->signal_keyboard_key_released().make_slot()
237	);
238	}
239
240	} // namespace
241
242	GigEdit::GigEdit() {
243	state = NULL;
244	}
245
246	int GigEdit::run(int argc, char* argv[]) {
247	init_app();
248
249	Gtk::Main kit(argc, argv);
250
251	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
252	#if (/HAVE_GETTEXT &&/ defined(__APPLE__))
253	// Gtk::Main binds the gtk locale to a possible non-existent
254	// directory. If we have bundled gtk locale files, we rebind here,
255	// after the Gtk::Main constructor.
256	if (!gigedit_localedir.empty()) {
257	bindtextdomain("gtk20", gigedit_localedir.c_str());
258	}
259	#endif
260
261	MainWindow window;
262	connect_signals(this, &window);
263	if (argc >= 2) window.load_file(argv[1]);
264	kit.run(window);
265	return 0;
266	}
267
268	int GigEdit::run(gig::Instrument* pInstrument) {
269	init_app();
270
271	GigEditState state(this);
272	this->state = &state;
273	state.run(pInstrument);
274	this->state = NULL;
275	return 0;
276	}
277
278	void GigEdit::on_note_on_event(int key, int velocity) {
279	if (!this->state) return;
280	GigEditState* state = (GigEditState*) this->state;
281	state->window->signal_note_on().emit(key, velocity);
282	}
283
284	void GigEdit::on_note_off_event(int key, int velocity) {
285	if (!this->state) return;
286	GigEditState* state = (GigEditState*) this->state;
287	state->window->signal_note_off().emit(key, velocity);
288	}
289
290	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
291	return file_structure_to_be_changed_signal;
292	}
293
294	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
295	return file_structure_changed_signal;
296	}
297
298	sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
299	return samples_to_be_removed_signal;
300	}
301
302	sigc::signal<void>& GigEdit::signal_samples_removed() {
303	return samples_removed_signal;
304	}
305
306	sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
307	return region_to_be_changed_signal;
308	}
309
310	sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
311	return region_changed_signal;
312	}
313
314	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
315	return dimreg_to_be_changed_signal;
316	}
317
318	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
319	return dimreg_changed_signal;
320	}
321
322	sigc::signal<void, gig::Sample*>& GigEdit::signal_sample_changed() {
323	return sample_changed_signal;
324	}
325
326	sigc::signal<void, gig::Sample/old/, gig::Sample/new/>& GigEdit::signal_sample_ref_changed() {
327	return sample_ref_changed_signal;
328	}
329
330	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_hit() {
331	return keyboard_key_hit_signal;
332	}
333
334	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_released() {
335	return keyboard_key_released_signal;
336	}
337
338	#ifdef OLD_THREADS
339	Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
340	#else
341	Glib::Threads::Mutex GigEditState::mutex;
342	#endif
343	Glib::Dispatcher* GigEditState::dispatcher = 0;
344	GigEditState* GigEditState::current = 0;
345
346	void GigEditState::open_window_static() {
347	GigEditState* c = GigEditState::current;
348	c->open.signal();
349	c->open_window();
350	}
351
352	void GigEditState::open_window() {
353	window = new MainWindow();
354
355	connect_signals(parent, window);
356	if (instrument) window->load_instrument(instrument);
357
358	window->signal_hide().connect(sigc::mem_fun(this,
359	&GigEditState::close_window));
360	window->present();
361	}
362
363	void GigEditState::close_window() {
364	delete window;
365	close.signal();
366	}
367
368	void GigEditState::main_loop_run(Cond* initialized) {
369	int argc = 1;
370	const char* argv_c[] = { "gigedit" };
371	char argv = const_cast<char>(argv_c);
372	Gtk::Main main_loop(argc, argv);
373	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
374	#if (/HAVE_GETTEXT &&/ defined(__APPLE__))
375	if (!gigedit_localedir.empty()) {
376	bindtextdomain("gtk20", gigedit_localedir.c_str());
377	}
378	#endif
379
380	dispatcher = new Glib::Dispatcher();
381	dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
382	initialized->signal();
383
384	main_loop.run();
385	}
386
387	#if defined(__APPLE__)
388
389	void GigEditState::runInCFMainLoop(void* info) {
390	printf("runInCFMainLoop() entered\n"); fflush(stdout);
391	GigEditState* state = static_cast<GigEditState*>(info);
392	state->main_loop_run(
393	&state->initialized
394	);
395	printf("runInCFMainLoop() left\n"); fflush(stdout);
396	}
397
398	#endif // __APPLE__
399
400	void GigEditState::run(gig::Instrument* pInstrument) {
401	mutex.lock(); // lock access to static variables
402
403	static bool main_loop_started = false;
404	instrument = pInstrument;
405	if (!main_loop_started) {
406	#if defined(__APPLE__)
407	// spawn GUI on main thread :
408	// On OS X the Gtk GUI can only be launched on a process's "main"
409	// thread. When trying to launch the Gtk GUI on any other thread,
410	// there will only be a white box, because the GUI would not receive
411	// any events, since it would listen to the wrong system event loop.
412	// So far we haven't investigated whether there is any kind of
413	// circumvention to allow doing that also on other OS X threads.
414	{
415	// In case the sampler was launched as standalone sampler (not as
416	// plugin), use the following global callback variable hack ...
417	if (g_mainThreadCallbackSupported) {
418	printf("Setting callback ...\n"); fflush(stdout);
419	g_mainThreadCallback = runInCFMainLoop;
420	g_mainThreadCallbackInfo = this;
421	g_fireMainThreadCallback = true;
422	printf("Callback variables set.\n"); fflush(stdout);
423	} else { // Sampler was launched as (i.e. AU / VST) plugin ...
424	// When the sampler was launched as plugin, we have no idea
425	// whether any sampler thread is the process's "main" thread.
426	// So that's why we are trying to use Apple's API for trying to
427	// launch our callback function on the process's main thread.
428	// However this will only work, if the plugin host application
429	// established a CF event loop, that is if the application is
430	// using Cocoa for its GUI. For other host applications the
431	// callback will never be executed and thus gigedit would not
432	// popup.
433
434	// should be pretty much the same as the Objective-C solution below with macHelperRunCFuncOnMainThread()
435	/*CFRunLoopSourceContext sourceContext = CFRunLoopSourceContext();
436	sourceContext.info = this;
437	sourceContext.perform = runInCFMainLoop;
438	printf("CFRunLoopSourceCreate\n"); fflush(stdout);
439	CFRunLoopSourceRef source = CFRunLoopSourceCreate(
440	kCFAllocatorDefault, // allocator
441	1, // priority
442	&sourceContext
443	);
444	printf("CFRunLoopAddSource\n"); fflush(stdout);
445	CFRunLoopAddSource(CFRunLoopGetMain(), source, kCFRunLoopDefaultMode);
446	CFRelease(source);*/
447
448	// use Apple's Objective-C API to call our callback function
449	// 'runInCFMainLoop()' on the process's "main" thread
450	macHelperRunCFuncOnMainThread(runInCFMainLoop, this);
451	}
452	}
453	#else
454	#ifdef OLD_THREADS
455	Glib::Thread::create(
456	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
457	&initialized),
458	false);
459	#else
460	Glib::Threads::Thread::create(
461	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
462	&initialized));
463	#endif
464	#endif
465	printf("Waiting for GUI being initialized (on main thread) ....\n"); fflush(stdout);
466	initialized.wait();
467	printf("GUI is now initialized. Everything done.\n"); fflush(stdout);
468	main_loop_started = true;
469	}
470	current = this;
471	dispatcher->emit();
472	open.wait(); // wait until the GUI thread has read current
473	mutex.unlock();
474	close.wait(); // sleep until window is closed
475	}
476
477	#if defined(WIN32)
478	extern "C" {
479	BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
480	{
481	switch (reason) {
482	case DLL_PROCESS_ATTACH:
483	gigedit_dll_handle = instance;
484	break;
485	}
486	return TRUE;
487	}
488	}
489	#endif