/[svn]/gigedit/trunk/src/gigedit/gigedit.cpp
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Diff of /gigedit/trunk/src/gigedit/gigedit.cpp

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revision 1225 by schoenebeck, Sun Jun 10 10:56:11 2007 UTC revision 1656 by schoenebeck, Sat Feb 2 08:18:19 2008 UTC
# Line 1  Line 1 
1  /*  /*
2   * Copyright (C) 2007 Andreas Persson   * Copyright (C) 2007, 2008 Andreas Persson
3   *   *
4   * This program is free software; you can redistribute it and/or   * This program is free software; you can redistribute it and/or
5   * modify it under the terms of the GNU General Public License as   * modify it under the terms of the GNU General Public License as
# Line 20  Line 20 
20  #include "gigedit.h"  #include "gigedit.h"
21    
22  #include <gtkmm/main.h>  #include <gtkmm/main.h>
23    #include <glibmm/main.h>
24  #include "mainwindow.h"  #include "mainwindow.h"
25    
26  #include <libintl.h>  #include "global.h"
 #include <config.h>  
27    
28  // the app has to work from a DLL as well, so we hard code argv  namespace {
 int argc = 1;  
 const char* argv_c[] = { "gigedit" };  
 char** argv = const_cast<char**>(argv_c);  
29    
30  static void __init_app() {  // State for a gigedit thread.
31      setlocale(LC_ALL, "");  //
32      bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);  // This class is only used when gigedit is run as a plugin and makes
33      bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");  // sure that there's only one Gtk::Main event loop. The event loop is
34      textdomain(GETTEXT_PACKAGE);  // 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      Glib::thread_init();      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  int GigEdit::run() {  void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
103      __init_app();      // the signals of the "GigEdit" class are actually just proxies, that
104      Gtk::Main kit(argc, argv);      // is they simply forward the signals of the internal classes to the
105      MainWindow window;      // outer world
106      kit.run(window);      mainwindow->signal_file_structure_to_be_changed().connect(
107      return 0;          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  int GigEdit::run(const char* pFileName) {  } // namespace
136      __init_app();  
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);      Gtk::Main kit(argc, argv);
145      MainWindow window;      MainWindow window;
146      if (pFileName) window.load_file(pFileName);      connect_signals(this, &window);
147        if (argc >= 2) window.load_file(argv[1]);
148      kit.run(window);      kit.run(window);
149      return 0;      return 0;
150  }  }
151    
152  int GigEdit::run(gig::Instrument* pInstrument) {  int GigEdit::run(gig::Instrument* pInstrument) {
153      __init_app();      init_app();
154      Gtk::Main kit(argc, argv);  
155      MainWindow window;      GigEditState state(this);
156      if (pInstrument) window.load_instrument(pInstrument);      this->state = &state;
157      kit.run(window);      state.run(pInstrument);
158        this->state = NULL;
159      return 0;      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    }
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