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

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Revision 1660 - (hide annotations) (download)
Sun Feb 3 00:19:55 2008 UTC (11 years, 1 month ago) by schoenebeck
File size: 8299 byte(s)
* call it virtually baby: the keyboard finally can trigger notes on
  sampler side (only in live-mode of course)
* added a red cross on top of the detached-mode icon to make
  it more obvious

1 schoenebeck 1225 /*
2 schoenebeck 1654 * Copyright (C) 2007, 2008 Andreas Persson
3 schoenebeck 1225 *
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 schoenebeck 1654 #include <glibmm/main.h>
24 schoenebeck 1225 #include "mainwindow.h"
25    
26 schoenebeck 1396 #include "global.h"
27 schoenebeck 1225
28 persson 1456 namespace {
29 schoenebeck 1225
30 persson 1456 // 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 schoenebeck 1654 MainWindow* window;
44    
45 persson 1456 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 schoenebeck 1333 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 schoenebeck 1396
89     #if HAVE_GETTEXT
90 schoenebeck 1333 bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
91     bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
92     textdomain(GETTEXT_PACKAGE);
93 schoenebeck 1396 #endif // HAVE_GETTEXT
94    
95 schoenebeck 1333 // 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 schoenebeck 1225 }
101    
102 persson 1456 void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
103 schoenebeck 1322 // the signals of the "GigEdit" class are actually just proxies, that
104     // is they simply forward the signals of the internal classes to the
105     // outer world
106     mainwindow->signal_file_structure_to_be_changed().connect(
107     gigedit->signal_file_structure_to_be_changed().make_slot()
108     );
109     mainwindow->signal_file_structure_changed().connect(
110     gigedit->signal_file_structure_changed().make_slot()
111     );
112     mainwindow->signal_samples_to_be_removed().connect(
113     gigedit->signal_samples_to_be_removed().make_slot()
114     );
115     mainwindow->signal_samples_removed().connect(
116     gigedit->signal_samples_removed().make_slot()
117     );
118     mainwindow->signal_region_to_be_changed().connect(
119     gigedit->signal_region_to_be_changed().make_slot()
120     );
121     mainwindow->signal_region_changed().connect(
122     gigedit->signal_region_changed().make_slot()
123     );
124     mainwindow->signal_dimreg_to_be_changed().connect(
125     gigedit->signal_dimreg_to_be_changed().make_slot()
126     );
127     mainwindow->signal_dimreg_changed().connect(
128     gigedit->signal_dimreg_changed().make_slot()
129     );
130     mainwindow->signal_sample_ref_changed().connect(
131     gigedit->signal_sample_ref_changed().make_slot()
132     );
133 schoenebeck 1660 mainwindow->signal_keyboard_key_hit().connect(
134     gigedit->signal_keyboard_key_hit().make_slot()
135     );
136     mainwindow->signal_keyboard_key_released().connect(
137     gigedit->signal_keyboard_key_released().make_slot()
138     );
139 schoenebeck 1322 }
140    
141 schoenebeck 1654 } // namespace
142    
143     GigEdit::GigEdit() {
144     state = NULL;
145 schoenebeck 1225 }
146    
147 persson 1456 int GigEdit::run(int argc, char* argv[]) {
148     init_app();
149    
150     Gtk::Main kit(argc, argv);
151 schoenebeck 1225 MainWindow window;
152 persson 1456 connect_signals(this, &window);
153     if (argc >= 2) window.load_file(argv[1]);
154 schoenebeck 1225 kit.run(window);
155     return 0;
156     }
157    
158     int GigEdit::run(gig::Instrument* pInstrument) {
159 persson 1456 init_app();
160    
161     GigEditState state(this);
162 schoenebeck 1654 this->state = &state;
163 persson 1456 state.run(pInstrument);
164 schoenebeck 1654 this->state = NULL;
165 schoenebeck 1225 return 0;
166     }
167 schoenebeck 1322
168 schoenebeck 1654 void GigEdit::on_note_on_event(int key, int velocity) {
169     if (!this->state) return;
170     GigEditState* state = (GigEditState*) this->state;
171     state->window->signal_note_on().emit(key, velocity);
172     }
173    
174     void GigEdit::on_note_off_event(int key, int velocity) {
175     if (!this->state) return;
176     GigEditState* state = (GigEditState*) this->state;
177     state->window->signal_note_off().emit(key, velocity);
178     }
179    
180 schoenebeck 1339 sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
181 schoenebeck 1322 return file_structure_to_be_changed_signal;
182     }
183    
184 schoenebeck 1339 sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
185 schoenebeck 1322 return file_structure_changed_signal;
186     }
187    
188 schoenebeck 1339 sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
189 schoenebeck 1322 return samples_to_be_removed_signal;
190     }
191    
192 schoenebeck 1339 sigc::signal<void>& GigEdit::signal_samples_removed() {
193 schoenebeck 1322 return samples_removed_signal;
194     }
195    
196 schoenebeck 1339 sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
197 schoenebeck 1322 return region_to_be_changed_signal;
198     }
199    
200 schoenebeck 1339 sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
201 schoenebeck 1322 return region_changed_signal;
202     }
203    
204 schoenebeck 1339 sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
205 schoenebeck 1322 return dimreg_to_be_changed_signal;
206     }
207    
208 schoenebeck 1339 sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
209 schoenebeck 1322 return dimreg_changed_signal;
210     }
211    
212 schoenebeck 1339 sigc::signal<void, gig::Sample*/*old*/, gig::Sample*/*new*/>& GigEdit::signal_sample_ref_changed() {
213 schoenebeck 1322 return sample_ref_changed_signal;
214     }
215 persson 1456
216 schoenebeck 1660 sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_hit() {
217     return keyboard_key_hit_signal;
218     }
219 persson 1456
220 schoenebeck 1660 sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_released() {
221     return keyboard_key_released_signal;
222     }
223    
224 persson 1456 Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT;
225     Glib::Dispatcher* GigEditState::dispatcher = 0;
226     GigEditState* GigEditState::current = 0;
227    
228     void GigEditState::open_window_static() {
229     GigEditState* c = GigEditState::current;
230     c->open.signal();
231     c->open_window();
232     }
233    
234     void GigEditState::open_window() {
235     window = new MainWindow();
236    
237     connect_signals(parent, window);
238     if (instrument) window->load_instrument(instrument);
239    
240     window->signal_hide().connect(sigc::mem_fun(this,
241     &GigEditState::close_window));
242     window->present();
243     }
244    
245     void GigEditState::close_window() {
246     delete window;
247     close.signal();
248     }
249    
250     void GigEditState::main_loop_run(Cond* initialized) {
251     int argc = 1;
252     const char* argv_c[] = { "gigedit" };
253     char** argv = const_cast<char**>(argv_c);
254     Gtk::Main main_loop(argc, argv);
255    
256     dispatcher = new Glib::Dispatcher();
257     dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static));
258     initialized->signal();
259    
260     main_loop.run();
261     }
262    
263     void GigEditState::run(gig::Instrument* pInstrument) {
264     mutex.lock(); // lock access to static variables
265    
266     static bool main_loop_started = false;
267     if (!main_loop_started) {
268     Cond initialized;
269     Glib::Thread::create(
270     sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run),
271     &initialized),
272     false);
273     initialized.wait();
274     main_loop_started = true;
275     }
276     instrument = pInstrument;
277     current = this;
278     dispatcher->emit();
279     open.wait(); // wait until the GUI thread has read current
280     mutex.unlock();
281     close.wait(); // sleep until window is closed
282     }

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