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/* |
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* Copyright (C) 2007-2009 Andreas Persson |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2, or (at |
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* your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with program; see the file COPYING. If not, write to the Free |
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
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* 02110-1301 USA. |
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*/ |
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#include "gigedit.h" |
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#include <glibmm/dispatcher.h> |
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#include <glibmm/main.h> |
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#include <gtkmm/main.h> |
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#include "mainwindow.h" |
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#include "global.h" |
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namespace { |
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|
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// State for a gigedit thread. |
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// |
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// This class is only used when gigedit is run as a plugin and makes |
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// sure that there's only one Gtk::Main event loop. The event loop is |
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// started in a separate thread. The plugin thread just dispatches an |
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// event to the main loop to open a window and then goes to sleep |
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// until the window is closed. |
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// |
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class GigEditState : public sigc::trackable { |
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public: |
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GigEditState(GigEdit* parent) : parent(parent) { } |
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void run(gig::Instrument* pInstrument); |
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MainWindow* window; |
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private: |
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// simple condition variable abstraction |
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class Cond { |
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private: |
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bool pred; |
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Glib::Threads::Mutex mutex; |
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Glib::Threads::Cond cond; |
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public: |
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Cond() : pred(false) { } |
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void signal() { |
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Glib::Threads::Mutex::Lock lock(mutex); |
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pred = true; |
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cond.signal(); |
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} |
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void wait() { |
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Glib::Threads::Mutex::Lock lock(mutex); |
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while (!pred) cond.wait(mutex); |
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} |
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}; |
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#ifdef OLD_THREADS |
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static Glib::StaticMutex mutex; |
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#else |
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static Glib::Threads::Mutex mutex; |
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#endif |
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static Glib::Dispatcher* dispatcher; |
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static GigEditState* current; |
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static void main_loop_run(Cond* intialized); |
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static void open_window_static(); |
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GigEdit* parent; |
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Cond open; |
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Cond close; |
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gig::Instrument* instrument; |
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void open_window(); |
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void close_window(); |
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}; |
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#ifdef WIN32 |
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HINSTANCE gigedit_dll_handle = 0; |
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#endif |
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void init_app() { |
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static bool process_initialized = false; |
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if (!process_initialized) { |
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std::cout << "Initializing 3rd party services needed by gigedit.\n" |
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<< std::flush; |
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setlocale(LC_ALL, ""); |
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#if HAVE_GETTEXT |
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#ifdef WIN32 |
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#if GLIB_CHECK_VERSION(2, 16, 0) |
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gchar* root = |
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g_win32_get_package_installation_directory_of_module(gigedit_dll_handle); |
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#else |
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gchar* root = |
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g_win32_get_package_installation_directory(NULL, NULL); |
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#endif |
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gchar* temp = g_build_filename(root, "/share/locale", NULL); |
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g_free(root); |
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gchar* localedir = g_win32_locale_filename_from_utf8(temp); |
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g_free(temp); |
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bindtextdomain(GETTEXT_PACKAGE, localedir); |
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g_free(localedir); |
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#else |
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bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR); |
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#endif |
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bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8"); |
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textdomain(GETTEXT_PACKAGE); |
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#endif // HAVE_GETTEXT |
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#ifdef OLD_THREADS |
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// make sure thread_init() is called once and ONLY once per process |
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if (!Glib::thread_supported()) Glib::thread_init(); |
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#endif |
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process_initialized = true; |
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} |
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} |
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void connect_signals(GigEdit* gigedit, MainWindow* mainwindow) { |
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// the signals of the "GigEdit" class are actually just proxies, that |
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// is they simply forward the signals of the internal classes to the |
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// outer world |
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mainwindow->signal_file_structure_to_be_changed().connect( |
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gigedit->signal_file_structure_to_be_changed().make_slot() |
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); |
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mainwindow->signal_file_structure_changed().connect( |
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gigedit->signal_file_structure_changed().make_slot() |
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); |
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mainwindow->signal_samples_to_be_removed().connect( |
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gigedit->signal_samples_to_be_removed().make_slot() |
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); |
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mainwindow->signal_samples_removed().connect( |
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gigedit->signal_samples_removed().make_slot() |
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); |
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mainwindow->signal_region_to_be_changed().connect( |
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gigedit->signal_region_to_be_changed().make_slot() |
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); |
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mainwindow->signal_region_changed().connect( |
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gigedit->signal_region_changed().make_slot() |
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); |
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mainwindow->signal_dimreg_to_be_changed().connect( |
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gigedit->signal_dimreg_to_be_changed().make_slot() |
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); |
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mainwindow->signal_dimreg_changed().connect( |
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gigedit->signal_dimreg_changed().make_slot() |
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); |
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mainwindow->signal_sample_changed().connect( |
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gigedit->signal_sample_changed().make_slot() |
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); |
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mainwindow->signal_sample_ref_changed().connect( |
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gigedit->signal_sample_ref_changed().make_slot() |
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); |
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mainwindow->signal_keyboard_key_hit().connect( |
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gigedit->signal_keyboard_key_hit().make_slot() |
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); |
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mainwindow->signal_keyboard_key_released().connect( |
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gigedit->signal_keyboard_key_released().make_slot() |
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); |
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} |
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} // namespace |
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GigEdit::GigEdit() { |
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state = NULL; |
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} |
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int GigEdit::run(int argc, char* argv[]) { |
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init_app(); |
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Gtk::Main kit(argc, argv); |
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MainWindow window; |
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connect_signals(this, &window); |
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if (argc >= 2) window.load_file(argv[1]); |
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kit.run(window); |
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return 0; |
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} |
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int GigEdit::run(gig::Instrument* pInstrument) { |
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init_app(); |
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GigEditState state(this); |
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this->state = &state; |
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state.run(pInstrument); |
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this->state = NULL; |
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return 0; |
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} |
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void GigEdit::on_note_on_event(int key, int velocity) { |
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if (!this->state) return; |
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GigEditState* state = (GigEditState*) this->state; |
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state->window->signal_note_on().emit(key, velocity); |
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} |
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void GigEdit::on_note_off_event(int key, int velocity) { |
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if (!this->state) return; |
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GigEditState* state = (GigEditState*) this->state; |
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state->window->signal_note_off().emit(key, velocity); |
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} |
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sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_to_be_changed() { |
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return file_structure_to_be_changed_signal; |
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} |
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sigc::signal<void, gig::File*>& GigEdit::signal_file_structure_changed() { |
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return file_structure_changed_signal; |
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} |
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sigc::signal<void, std::list<gig::Sample*> >& GigEdit::signal_samples_to_be_removed() { |
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return samples_to_be_removed_signal; |
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} |
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sigc::signal<void>& GigEdit::signal_samples_removed() { |
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return samples_removed_signal; |
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} |
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sigc::signal<void, gig::Region*>& GigEdit::signal_region_to_be_changed() { |
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return region_to_be_changed_signal; |
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} |
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sigc::signal<void, gig::Region*>& GigEdit::signal_region_changed() { |
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return region_changed_signal; |
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} |
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sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_to_be_changed() { |
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return dimreg_to_be_changed_signal; |
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} |
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sigc::signal<void, gig::DimensionRegion*>& GigEdit::signal_dimreg_changed() { |
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return dimreg_changed_signal; |
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} |
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sigc::signal<void, gig::Sample*>& GigEdit::signal_sample_changed() { |
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return sample_changed_signal; |
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} |
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sigc::signal<void, gig::Sample*/*old*/, gig::Sample*/*new*/>& GigEdit::signal_sample_ref_changed() { |
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return sample_ref_changed_signal; |
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} |
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sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_hit() { |
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return keyboard_key_hit_signal; |
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} |
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sigc::signal<void, int/*key*/, int/*velocity*/>& GigEdit::signal_keyboard_key_released() { |
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return keyboard_key_released_signal; |
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} |
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#ifdef OLD_THREADS |
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Glib::StaticMutex GigEditState::mutex = GLIBMM_STATIC_MUTEX_INIT; |
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#else |
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Glib::Threads::Mutex GigEditState::mutex; |
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#endif |
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Glib::Dispatcher* GigEditState::dispatcher = 0; |
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GigEditState* GigEditState::current = 0; |
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void GigEditState::open_window_static() { |
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GigEditState* c = GigEditState::current; |
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c->open.signal(); |
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c->open_window(); |
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} |
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void GigEditState::open_window() { |
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window = new MainWindow(); |
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connect_signals(parent, window); |
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if (instrument) window->load_instrument(instrument); |
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window->signal_hide().connect(sigc::mem_fun(this, |
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&GigEditState::close_window)); |
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window->present(); |
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} |
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void GigEditState::close_window() { |
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delete window; |
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close.signal(); |
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} |
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void GigEditState::main_loop_run(Cond* initialized) { |
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int argc = 1; |
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const char* argv_c[] = { "gigedit" }; |
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char** argv = const_cast<char**>(argv_c); |
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Gtk::Main main_loop(argc, argv); |
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dispatcher = new Glib::Dispatcher(); |
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dispatcher->connect(sigc::ptr_fun(&GigEditState::open_window_static)); |
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initialized->signal(); |
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main_loop.run(); |
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} |
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void GigEditState::run(gig::Instrument* pInstrument) { |
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mutex.lock(); // lock access to static variables |
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static bool main_loop_started = false; |
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if (!main_loop_started) { |
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Cond initialized; |
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Glib::Threads::Thread::create( |
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sigc::bind(sigc::ptr_fun(&GigEditState::main_loop_run), |
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&initialized), |
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false); |
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initialized.wait(); |
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main_loop_started = true; |
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} |
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instrument = pInstrument; |
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current = this; |
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dispatcher->emit(); |
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open.wait(); // wait until the GUI thread has read current |
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mutex.unlock(); |
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close.wait(); // sleep until window is closed |
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} |
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#if defined(WIN32) |
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extern "C" { |
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BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved) |
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{ |
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switch (reason) { |
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case DLL_PROCESS_ATTACH: |
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gigedit_dll_handle = instance; |
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break; |
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} |
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return TRUE; |
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} |
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} |
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#endif |