Ichthyostega
dece405801
This switches the Lumiera UI from GTK-2 to GTK-3 Unfortunately, this move breaks two crucial features, which have been disabled for now: the display of video and our custom timeline widget. Since both of these require some reworking, which in fact has already started, we prefer to do the library and framework switch right away.
257 lines
13 KiB
C++
257 lines
13 KiB
C++
/*
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GuiStart - entry point for the lumiera GUI loaded as shared module
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Copyright (C) Lumiera.org
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2007-2008, Joel Holdsworth <joel@airwebreathe.org.uk>
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2009, Hermann Vosseler <Ichthyostega@web.de>
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Christian Thaeter <ct@pipapo.org>
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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 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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/** @file guistart.cpp
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** Start up the Lumiera GTK GUI when loading it as dynamic module.
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** This plugin is linked together with the Lumiera GUI code; when loaded as
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** Lumiera plugin, it allows to kick off the GTK main event loop and thus to bring
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** up the GUI. The loading and shutdown process is carried out by gui::GuiFacade and
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** controlled by lumiera::AppState, which in turn is activated by Lumiera main().
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**
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** After successfully loading this module, a call to #kickOff is expected to be
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** issued, passing a termination signal (callback) to be executed when the GUI
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** terminates. The \c kickOff() call remains blocked within the main GTK event loop;
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** thus typically this call should be issued within a separate dedicated GUI thread.
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** Especially, the gui::GuiRunner will ensure this to happen.
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**
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** Prior to entering the GTK event loop, all primary "business" interface of the GUI
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** will be opened (currently as of 1/09 this is the interface gui::GuiNotification.)
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**
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** @see lumiera::AppState
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** @see gui::GuiFacade
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** @see guifacade.cpp
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** @see gui::GtkLumiera#main the GTK GUI main
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*/
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//--------------------tricky special Include sequence
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#include "lib/hash-standard.hpp"// need to be before any inclusion of <string>
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#include <locale> // need to include this to prevent errors when libintl.h defines textdomain (because gtk-lumiera removes the def when ENABLE_NLS isn't defined)
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#include "gui/gtk-lumiera.hpp" // need to include this before nobugcfg.h, because types.h from GTK tries to shaddow the ERROR macro from windows, which kills nobug's ERROR macro
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//--------------------tricky special Include sequence
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#include "lib/error.hpp"
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#include "gui/guifacade.hpp"
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#include "gui/notification-service.hpp"
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#include "gui/display-service.hpp"
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#include "common/subsys.hpp"
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#include "backend/thread-wrapper.hpp"
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#include "lib/depend.hpp"
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extern "C" {
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#include "common/interface.h"
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#include "common/interface-descriptor.h"
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}
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#include <functional>
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#include <string>
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using std::string;
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using backend::Thread;
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using std::bind;
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using lumiera::Subsys;
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using lumiera::error::LUMIERA_ERROR_STATE;
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using gui::LUMIERA_INTERFACE_INAME(lumieraorg_Gui, 1);
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namespace gui {
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namespace { // implementation details
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/**************************************************************************//**
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* Implement the necessary steps for actually making the Lumiera Gui available.
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* Open the business interface(s) and start up the GTK GUI main event loop.
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*/
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struct GuiLifecycle
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{
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string error_;
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Subsys::SigTerm& reportOnTermination_;
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NotificationService activateNotificationService_;
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DisplayService activateDisplayService_;
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GuiLifecycle (Subsys::SigTerm& terminationHandler)
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: reportOnTermination_(terminationHandler)
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, activateNotificationService_() // opens the GuiNotification facade interface
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, activateDisplayService_() // opens the gui::Display facade interface
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{ }
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~GuiLifecycle ()
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{
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reportOnTermination_(&error_); // inform main thread that the GUI has been shut down.
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}
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void
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run ()
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{
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try
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{
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int argc =0;
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char *argv[] = {}; // dummy command line for GTK
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// execute the GTK Event Loop____________
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GtkLumiera::application().main(argc, argv);
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if (!lumiera_error_peek())
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return; // all went well, normal shutdown
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}
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catch (lumiera::Error& problem)
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{
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error_ = problem.what();
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lumiera_error(); // clear error flag
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return;
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}
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catch (...){ }
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error_ = "unexpected error terminated the GUI.";
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return;
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}
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};
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void
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runGUI (Subsys::SigTerm& reportTermination)
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{
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GuiLifecycle(reportTermination).run();
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}
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} // (End) impl details
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bool
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kickOff (Subsys::SigTerm& terminationHandle)
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{
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try
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{
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Thread ("GUI-Main", bind (&runGUI, terminationHandle));
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return true; // if we reach this line...
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}
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catch(...)
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{
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if (!lumiera_error_peek())
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LUMIERA_ERROR_SET (gui, STATE, "unexpected error when starting the GUI thread");
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return false;
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} // note: lumiera_error state remains set
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}
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} // namespace gui
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extern "C" { /* ================== define a lumieraorg_Gui instance ======================= */
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LUMIERA_INTERFACE_INSTANCE (lumieraorg_interfacedescriptor, 0
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,lumieraorg_GuiStarterPlugin_descriptor
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, NULL, NULL, NULL
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, LUMIERA_INTERFACE_INLINE (name,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "GuiStarterPlugin"; }
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)
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, LUMIERA_INTERFACE_INLINE (brief,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "entry point to start up the Lumiera GTK GUI contained in this dynamic module"; }
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)
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, LUMIERA_INTERFACE_INLINE (homepage,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "http://www.lumiera.org/develompent.html" ;}
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)
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, LUMIERA_INTERFACE_INLINE (version,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "0.1~pre"; }
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)
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, LUMIERA_INTERFACE_INLINE (author,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "Joel Holdsworth, Christian Thaeter, Hermann Vosseler"; }
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)
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, LUMIERA_INTERFACE_INLINE (email,
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const char*, (LumieraInterface ifa),
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{ (void)ifa; return "Lumiera@lists.lumiera.org"; }
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)
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, LUMIERA_INTERFACE_INLINE (copyright,
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const char*, (LumieraInterface ifa),
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{
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(void)ifa;
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return
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"Copyright (C) Lumiera.org\n"
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"2007-2008, Joel Holdsworth <joel@airwebreathe.org.uk>\n"
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"2009, Christian Thaeter <ct@pipapo.org>\n"
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" Hermann Vosseler <Ichthyostega@web.de>";
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}
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)
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, LUMIERA_INTERFACE_INLINE (license,
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const char*, (LumieraInterface ifa),
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{
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(void)ifa;
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return
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"This program is free software; you can redistribute it and/or modify\n"
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"it under the terms of the GNU General Public License as published by\n"
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"the Free Software Foundation; either version 2 of the License, or\n"
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"(at your option) any later version.\n"
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"\n"
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"This program is distributed in the hope that it will be useful,\n"
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"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
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"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
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"GNU General Public License for more details.\n"
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"\n"
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"You should have received a copy of the GNU General Public License\n"
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"along with this program; if not, write to the Free Software\n"
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"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA";
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}
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)
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, LUMIERA_INTERFACE_INLINE (state,
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int, (LumieraInterface ifa),
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{(void)ifa; return LUMIERA_INTERFACE_EXPERIMENTAL; }
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)
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, LUMIERA_INTERFACE_INLINE (versioncmp,
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int, (const char* a, const char* b),
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{return 0;} ////////////////////////////////////////////TODO define version ordering
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)
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);
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LUMIERA_EXPORT( /* ===================== PLUGIN EXPORTS ================================== */
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LUMIERA_INTERFACE_DEFINE (lumieraorg_Gui, 1
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,lumieraorg_GuiStarterPlugin
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, LUMIERA_INTERFACE_REF(lumieraorg_interfacedescriptor, 0, lumieraorg_GuiStarterPlugin_descriptor)
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, NULL /* on open */
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, NULL /* on close */
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, LUMIERA_INTERFACE_INLINE (kickOff,
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bool, (void* termSig),
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{
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return gui::kickOff (*reinterpret_cast<Subsys::SigTerm *> (termSig));
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}
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)
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)
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);
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} // extern "C"
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