glib_event_source.h

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/*
 * Copyright (C) 2022 Paul Davis <paul@linuxaudiosystems.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
 
#include <glib.h>
#include <glibmm/main.h>
#include "pbd/libpbd_visibility.h"
 
class LIBPBD_API GlibEventLoopCallback
{
  public:
        GlibEventLoopCallback (std::function<void()> callback);
        ~GlibEventLoopCallback();
 
        static gboolean c_prepare (GSource*, gint* timeout);
        void attach (Glib::RefPtr<Glib::MainContext>);
 
  private:
        struct GSourceWithParent {
                GSource c;
                GlibEventLoopCallback* cpp;
        };
 
        bool cpp_prepare();
 
        GSourceWithParent* gsource;
        GSourceFuncs funcs;
        std::function<void()> _callback;
};