src/gigedit/gigedit.cpp

/*
 * Copyright (C) 2007-2015 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 <glibmmconfig.h>
// threads.h must be included first to be able to build with
// G_DISABLE_DEPRECATED
#if (GLIBMM_MAJOR_VERSION == 2 && GLIBMM_MINOR_VERSION == 31 && GLIBMM_MICRO_VERSION >= 2) || \
    (GLIBMM_MAJOR_VERSION == 2 && GLIBMM_MINOR_VERSION > 31) || GLIBMM_MAJOR_VERSION > 2
#include <glibmm/threads.h>
#endif

#include "gigedit.h"

#include <gtkmmconfig.h>
#if GTKMM_MAJOR_VERSION < 3
#include <gdkmm/region.h>
#endif
#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__) && HAVE_LINUXSAMPLER // 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) :
        window(0), parent(parent), instrument(0) { }
    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()
    );
    mainwindow->signal_switch_sampler_instrument().connect(
        gigedit->signal_switch_sampler_instrument().make_slot()
    );
    mainwindow->signal_script_to_be_changed.connect(
        gigedit->signal_script_to_be_changed.make_slot()
    );
    mainwindow->signal_script_changed.connect(
        gigedit->signal_script_changed.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 = static_cast<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 = static_cast<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;
}

sigc::signal<void, gig::Instrument*>& GigEdit::signal_switch_sampler_instrument() {
    return switch_sampler_instrument_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__) && HAVE_LINUXSAMPLER
        // 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) 2007-2015 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 <glibmmconfig.h>
21	// threads.h must be included first to be able to build with
22	// G_DISABLE_DEPRECATED
23	#if (GLIBMM_MAJOR_VERSION == 2 && GLIBMM_MINOR_VERSION == 31 && GLIBMM_MICRO_VERSION >= 2) \|\| \
24	(GLIBMM_MAJOR_VERSION == 2 && GLIBMM_MINOR_VERSION > 31) \|\| GLIBMM_MAJOR_VERSION > 2
25	#include <glibmm/threads.h>
26	#endif
27
28	#include "gigedit.h"
29
30	#include <gtkmmconfig.h>
31	#if GTKMM_MAJOR_VERSION < 3
32	#include <gdkmm/region.h>
33	#endif
34	#include <glibmm/dispatcher.h>
35	#include <glibmm/main.h>
36	#include <gtkmm/main.h>
37
38	#if defined(__APPLE__)
39	# include <CoreFoundation/CoreFoundation.h>
40	# include "MacHelper.h"
41	#endif
42
43	#include "mainwindow.h"
44
45	#include "global.h"
46
47	#ifdef __APPLE__
48	#include <dlfcn.h>
49	#include <glibmm/fileutils.h>
50	#include <glibmm/miscutils.h>
51	#endif
52
53	//TODO: (hopefully) just a temporary nasty hack for launching gigedit on the main thread on Mac (see comments below in this file for details)
54	#if defined(__APPLE__) && HAVE_LINUXSAMPLER // the following global external variables are defined in LinuxSampler's global_private.cpp ...
55	extern bool g_mainThreadCallbackSupported;
56	extern void (g_mainThreadCallback)(void info);
57	extern void* g_mainThreadCallbackInfo;
58	extern bool g_fireMainThreadCallback;
59	#endif
60
61	namespace {
62
63	// State for a gigedit thread.
64	//
65	// This class is only used when gigedit is run as a plugin and makes
66	// sure that there's only one Gtk::Main event loop. The event loop is
67	// started in a separate thread. The plugin thread just dispatches an
68	// event to the main loop to open a window and then goes to sleep
69	// until the window is closed.
70	//
71	class GigEditState : public sigc::trackable {
72	public:
73	GigEditState(GigEdit* parent) :
74	window(0), parent(parent), instrument(0) { }
75	void run(gig::Instrument* pInstrument);
76
77	MainWindow* window;
78
79	private:
80
81	// simple condition variable abstraction
82	class Cond {
83	private:
84	bool pred;
85	Glib::Threads::Mutex mutex;
86	Glib::Threads::Cond cond;
87	public:
88	Cond() : pred(false) { }
89	void signal() {
90	Glib::Threads::Mutex::Lock lock(mutex);
91	pred = true;
92	cond.signal();
93	}
94	void wait() {
95	Glib::Threads::Mutex::Lock lock(mutex);
96	while (!pred) cond.wait(mutex);
97	}
98	};
99
100	#ifdef OLD_THREADS
101	static Glib::StaticMutex mutex;
102	#else
103	static Glib::Threads::Mutex mutex;
104	#endif
105	static Glib::Dispatcher* dispatcher;
106	static GigEditState* current;
107
108	static void main_loop_run(Cond* intialized);
109	static void open_window_static();
110
111	GigEdit* parent;
112	Cond open;
113	Cond close;
114	Cond initialized;
115	gig::Instrument* instrument;
116
117	void open_window();
118	void close_window();
119	#if defined(__APPLE__)
120	static void runInCFMainLoop(void* info);
121	#endif
122	};
123
124	#ifdef WIN32
125	HINSTANCE gigedit_dll_handle = 0;
126	#endif
127
128	#ifdef __APPLE__
129	std::string gigedit_localedir;
130	#endif
131
132	void init_app() {
133	static bool process_initialized = false;
134	if (!process_initialized) {
135	std::cout << "Initializing 3rd party services needed by gigedit.\n"
136	<< std::flush;
137	setlocale(LC_ALL, "");
138
139	#ifdef __APPLE__
140	// Look for pango.modules, gdk-pixbuf.loaders and locale files
141	// under the same dir as the gigedit dylib is installed in.
142	Dl_info info;
143	if (dladdr((void*)&init_app, &info)) {
144	std::string libdir = Glib::path_get_dirname(info.dli_fname);
145
146	if (Glib::getenv("PANGO_SYSCONFDIR") == "" &&
147	Glib::file_test(Glib::build_filename(libdir,
148	"pango/pango.modules"),
149	Glib::FILE_TEST_EXISTS)) {
150	Glib::setenv("PANGO_SYSCONFDIR", libdir, true);
151	}
152	if (Glib::getenv("GDK_PIXBUF_MODULE_FILE") == "") {
153	std::string module_file =
154	Glib::build_filename(libdir,
155	"gtk-2.0/gdk-pixbuf.loaders");
156	if (Glib::file_test(module_file, Glib::FILE_TEST_EXISTS)) {
157	Glib::setenv("GDK_PIXBUF_MODULE_FILE", module_file, true);
158	}
159	}
160	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
161	//#if HAVE_GETTEXT
162	std::string localedir = Glib::build_filename(libdir, "locale");
163	if (Glib::file_test(localedir, Glib::FILE_TEST_EXISTS)) {
164	gigedit_localedir = localedir;
165	bindtextdomain(GETTEXT_PACKAGE, gigedit_localedir.c_str());
166	} else {
167	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
168	}
169	//#endif
170	}
171
172	// The gtk file dialog stores its recent files state in
173	// ~/.local/share
174	g_mkdir_with_parents(
175	Glib::build_filename(Glib::get_home_dir(),
176	".local/share").c_str(), 0777);
177	#endif // __APPLE__
178
179	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
180	#if (HAVE_GETTEXT \|\| defined(__APPLE__))
181
182	#ifdef WIN32
183	#if GLIB_CHECK_VERSION(2, 16, 0)
184	gchar* root =
185	g_win32_get_package_installation_directory_of_module(gigedit_dll_handle);
186	#else
187	gchar* root =
188	g_win32_get_package_installation_directory(NULL, NULL);
189	#endif
190	gchar* temp = g_build_filename(root, "/share/locale", NULL);
191	g_free(root);
192	gchar* localedir = g_win32_locale_filename_from_utf8(temp);
193	g_free(temp);
194	bindtextdomain(GETTEXT_PACKAGE, localedir);
195	g_free(localedir);
196	#elif !defined(__APPLE__)
197	bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
198	#endif
199	bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
200	textdomain(GETTEXT_PACKAGE);
201	#endif // HAVE_GETTEXT
202
203	#ifdef OLD_THREADS
204	// make sure thread_init() is called once and ONLY once per process
205	if (!Glib::thread_supported()) Glib::thread_init();
206	#endif
207	process_initialized = true;
208	}
209	}
210
211	void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
212	// the signals of the "GigEdit" class are actually just proxies, that
213	// is they simply forward the signals of the internal classes to the
214	// outer world
215	mainwindow->signal_file_structure_to_be_changed().connect(
216	gigedit->signal_file_structure_to_be_changed().make_slot()
217	);
218	mainwindow->signal_file_structure_changed().connect(
219	gigedit->signal_file_structure_changed().make_slot()
220	);
221	mainwindow->signal_samples_to_be_removed().connect(
222	gigedit->signal_samples_to_be_removed().make_slot()
223	);
224	mainwindow->signal_samples_removed().connect(
225	gigedit->signal_samples_removed().make_slot()
226	);
227	mainwindow->signal_region_to_be_changed().connect(
228	gigedit->signal_region_to_be_changed().make_slot()
229	);
230	mainwindow->signal_region_changed().connect(
231	gigedit->signal_region_changed().make_slot()
232	);
233	mainwindow->signal_dimreg_to_be_changed().connect(
234	gigedit->signal_dimreg_to_be_changed().make_slot()
235	);
236	mainwindow->signal_dimreg_changed().connect(
237	gigedit->signal_dimreg_changed().make_slot()
238	);
239	mainwindow->signal_sample_changed().connect(
240	gigedit->signal_sample_changed().make_slot()
241	);
242	mainwindow->signal_sample_ref_changed().connect(
243	gigedit->signal_sample_ref_changed().make_slot()
244	);
245	mainwindow->signal_keyboard_key_hit().connect(
246	gigedit->signal_keyboard_key_hit().make_slot()
247	);
248	mainwindow->signal_keyboard_key_released().connect(
249	gigedit->signal_keyboard_key_released().make_slot()
250	);
251	mainwindow->signal_switch_sampler_instrument().connect(
252	gigedit->signal_switch_sampler_instrument().make_slot()
253	);
254	mainwindow->signal_script_to_be_changed.connect(
255	gigedit->signal_script_to_be_changed.make_slot()
256	);
257	mainwindow->signal_script_changed.connect(
258	gigedit->signal_script_changed.make_slot()
259	);
260	}
261
262	} // namespace
263
264	GigEdit::GigEdit() {
265	state = NULL;
266	}
267
268	int GigEdit::run(int argc, char* argv[]) {
269	init_app();
270
271	Gtk::Main kit(argc, argv);
272
273	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
274	#if (/HAVE_GETTEXT &&/ defined(__APPLE__))
275	// Gtk::Main binds the gtk locale to a possible non-existent
276	// directory. If we have bundled gtk locale files, we rebind here,
277	// after the Gtk::Main constructor.
278	if (!gigedit_localedir.empty()) {
279	bindtextdomain("gtk20", gigedit_localedir.c_str());
280	}
281	#endif
282
283	MainWindow window;
284	connect_signals(this, &window);
285	if (argc >= 2) window.load_file(argv[1]);
286	kit.run(window);
287	return 0;
288	}
289
290	int GigEdit::run(gig::Instrument* pInstrument) {
291	init_app();
292
293	GigEditState state(this);
294	this->state = &state;
295	state.run(pInstrument);
296	this->state = NULL;
297	return 0;
298	}
299
300	void GigEdit::on_note_on_event(int key, int velocity) {
301	if (!this->state) return;
302	GigEditState* state = static_cast<GigEditState*>(this->state);
303	state->window->signal_note_on().emit(key, velocity);
304	}
305
306	void GigEdit::on_note_off_event(int key, int velocity) {
307	if (!this->state) return;
308	GigEditState* state = static_cast<GigEditState*>(this->state);
309	state->window->signal_note_off().emit(key, velocity);
310	}
311
312	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
313	return file_structure_to_be_changed_signal;
314	}
315
316	sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
317	return file_structure_changed_signal;
318	}
319
320	sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
321	return samples_to_be_removed_signal;
322	}
323
324	sigc::signal<void>& GigEdit::signal_samples_removed() {
325	return samples_removed_signal;
326	}
327
328	sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
329	return region_to_be_changed_signal;
330	}
331
332	sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
333	return region_changed_signal;
334	}
335
336	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
337	return dimreg_to_be_changed_signal;
338	}
339
340	sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
341	return dimreg_changed_signal;
342	}
343
344	sigc::signal<void, gig::Sample*>& GigEdit::signal_sample_changed() {
345	return sample_changed_signal;
346	}
347
348	sigc::signal<void, gig::Sample/old/, gig::Sample/new/>& GigEdit::signal_sample_ref_changed() {
349	return sample_ref_changed_signal;
350	}
351
352	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_hit() {
353	return keyboard_key_hit_signal;
354	}
355
356	sigc::signal<void, int/key/, int/velocity/>& GigEdit::signal_keyboard_key_released() {
357	return keyboard_key_released_signal;
358	}
359
360	sigc::signal<void, gig::Instrument*>& GigEdit::signal_switch_sampler_instrument() {
361	return switch_sampler_instrument_signal;
362	}
363
364	#ifdef OLD_THREADS
365	Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
366	#else
367	Glib::Threads::Mutex GigEditState::mutex;
368	#endif
369	Glib::Dispatcher* GigEditState::dispatcher = 0;
370	GigEditState* GigEditState::current = 0;
371
372	void GigEditState::open_window_static() {
373	GigEditState* c = GigEditState::current;
374	c->open.signal();
375	c->open_window();
376	}
377
378	void GigEditState::open_window() {
379	window = new MainWindow();
380
381	connect_signals(parent, window);
382	if (instrument) window->load_instrument(instrument);
383
384	window->signal_hide().connect(sigc::mem_fun(this,
385	&GigEditState::close_window));
386	window->present();
387	}
388
389	void GigEditState::close_window() {
390	delete window;
391	close.signal();
392	}
393
394	void GigEditState::main_loop_run(Cond* initialized) {
395	int argc = 1;
396	const char* argv_c[] = { "gigedit" };
397	char argv = const_cast<char>(argv_c);
398	Gtk::Main main_loop(argc, argv);
399	//FIXME: for some reason AC GETTEXT check fails on the Mac cross compiler?
400	#if (/HAVE_GETTEXT &&/ defined(__APPLE__))
401	if (!gigedit_localedir.empty()) {
402	bindtextdomain("gtk20", gigedit_localedir.c_str());
403	}
404	#endif
405
406	dispatcher = new Glib::Dispatcher();
407	dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
408	initialized->signal();
409
410	main_loop.run();
411	}
412
413	#if defined(__APPLE__)
414
415	void GigEditState::runInCFMainLoop(void* info) {
416	printf("runInCFMainLoop() entered\n"); fflush(stdout);
417	GigEditState* state = static_cast<GigEditState*>(info);
418	state->main_loop_run(
419	&state->initialized
420	);
421	printf("runInCFMainLoop() left\n"); fflush(stdout);
422	}
423
424	#endif // __APPLE__
425
426	void GigEditState::run(gig::Instrument* pInstrument) {
427	mutex.lock(); // lock access to static variables
428
429	static bool main_loop_started = false;
430	instrument = pInstrument;
431	if (!main_loop_started) {
432	#if defined(__APPLE__) && HAVE_LINUXSAMPLER
433	// spawn GUI on main thread :
434	// On OS X the Gtk GUI can only be launched on a process's "main"
435	// thread. When trying to launch the Gtk GUI on any other thread,
436	// there will only be a white box, because the GUI would not receive
437	// any events, since it would listen to the wrong system event loop.
438	// So far we haven't investigated whether there is any kind of
439	// circumvention to allow doing that also on other OS X threads.
440	{
441	// In case the sampler was launched as standalone sampler (not as
442	// plugin), use the following global callback variable hack ...
443	if (g_mainThreadCallbackSupported) {
444	printf("Setting callback ...\n"); fflush(stdout);
445	g_mainThreadCallback = runInCFMainLoop;
446	g_mainThreadCallbackInfo = this;
447	g_fireMainThreadCallback = true;
448	printf("Callback variables set.\n"); fflush(stdout);
449	} else { // Sampler was launched as (i.e. AU / VST) plugin ...
450	// When the sampler was launched as plugin, we have no idea
451	// whether any sampler thread is the process's "main" thread.
452	// So that's why we are trying to use Apple's API for trying to
453	// launch our callback function on the process's main thread.
454	// However this will only work, if the plugin host application
455	// established a CF event loop, that is if the application is
456	// using Cocoa for its GUI. For other host applications the
457	// callback will never be executed and thus gigedit would not
458	// popup.
459
460	// should be pretty much the same as the Objective-C solution below with macHelperRunCFuncOnMainThread()
461	/*CFRunLoopSourceContext sourceContext = CFRunLoopSourceContext();
462	sourceContext.info = this;
463	sourceContext.perform = runInCFMainLoop;
464	printf("CFRunLoopSourceCreate\n"); fflush(stdout);
465	CFRunLoopSourceRef source = CFRunLoopSourceCreate(
466	kCFAllocatorDefault, // allocator
467	1, // priority
468	&sourceContext
469	);
470	printf("CFRunLoopAddSource\n"); fflush(stdout);
471	CFRunLoopAddSource(CFRunLoopGetMain(), source, kCFRunLoopDefaultMode);
472	CFRelease(source);*/
473
474	// use Apple's Objective-C API to call our callback function
475	// 'runInCFMainLoop()' on the process's "main" thread
476	macHelperRunCFuncOnMainThread(runInCFMainLoop, this);
477	}
478	}
479	#else
480	#ifdef OLD_THREADS
481	Glib::Thread::create(
482	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
483	&initialized),
484	false);
485	#else
486	Glib::Threads::Thread::create(
487	sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
488	&initialized));
489	#endif
490	#endif
491	printf("Waiting for GUI being initialized (on main thread) ....\n"); fflush(stdout);
492	initialized.wait();
493	printf("GUI is now initialized. Everything done.\n"); fflush(stdout);
494	main_loop_started = true;
495	}
496	current = this;
497	dispatcher->emit();
498	open.wait(); // wait until the GUI thread has read current
499	mutex.unlock();
500	close.wait(); // sleep until window is closed
501	}
502
503	#if defined(WIN32)
504	extern "C" {
505	BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
506	{
507	switch (reason) {
508	case DLL_PROCESS_ATTACH:
509	gigedit_dll_handle = instance;
510	break;
511	}
512	return TRUE;
513	}
514	}
515	#endif