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

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Revision 1660 - (show annotations) (download)
Sun Feb 3 00:19:55 2008 UTC (16 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 /*
2 * Copyright (C) 2007, 2008 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 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 void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) {
103 // 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 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 }
140
141 } // namespace
142
143 GigEdit::GigEdit() {
144 state = NULL;
145 }
146
147 int GigEdit::run(int argc, char* argv[]) {
148 init_app();
149
150 Gtk::Main kit(argc, argv);
151 MainWindow window;
152 connect_signals(this, &window);
153 if (argc >= 2) window.load_file(argv[1]);
154 kit.run(window);
155 return 0;
156 }
157
158 int GigEdit::run(gig::Instrument* pInstrument) {
159 init_app();
160
161 GigEditState state(this);
162 this->state = &state;
163 state.run(pInstrument);
164 this->state = NULL;
165 return 0;
166 }
167
168 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 sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() {
181 return file_structure_to_be_changed_signal;
182 }
183
184 sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() {
185 return file_structure_changed_signal;
186 }
187
188 sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() {
189 return samples_to_be_removed_signal;
190 }
191
192 sigc::signal<void>& GigEdit::signal_samples_removed() {
193 return samples_removed_signal;
194 }
195
196 sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() {
197 return region_to_be_changed_signal;
198 }
199
200 sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() {
201 return region_changed_signal;
202 }
203
204 sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() {
205 return dimreg_to_be_changed_signal;
206 }
207
208 sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() {
209 return dimreg_changed_signal;
210 }
211
212 sigc::signal<void, gig::Sample*/*old*/, gig::Sample*/*new*/>& GigEdit::signal_sample_ref_changed() {
213 return sample_ref_changed_signal;
214 }
215
216 sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_hit() {
217 return keyboard_key_hit_signal;
218 }
219
220 sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_released() {
221 return keyboard_key_released_signal;
222 }
223
224 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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