129 lines
2.9 KiB
C++
129 lines
2.9 KiB
C++
/*
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* Copyright (C) 2014 Tim Mayberry <mojofunk@gmail.com>
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* Copyright (C) 2015 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at 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,
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __libpbd_timer_h__
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#define __libpbd_timer_h__
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#include <sigc++/signal.h>
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#include <glibmm/main.h>
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#include "pbd/libpbd_visibility.h"
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namespace PBD {
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/**
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* The Timer class is a wrapper around Glib TimeoutSources
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* The Timer will start automatically when the first connection
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* is made and stop when the last callback is disconnected.
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*/
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class LIBPBD_API Timer
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{
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public:
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Timer (unsigned int interval,
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const Glib::RefPtr<Glib::MainContext>& main_context);
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unsigned int get_interval () const;
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void set_interval (unsigned int new_interval);
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virtual unsigned int connection_count () const = 0;
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void suspend () { m_suspended = true; }
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void resume () { m_suspended = false; }
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protected:
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virtual ~Timer() { }
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void start ();
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void stop ();
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virtual bool on_elapsed () = 0;
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bool suspended () const { return m_suspended; }
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private:
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Timer(const Timer&);
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Timer& operator= (const Timer&);
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private:
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static gboolean _timeout_handler (void *data);
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bool timeout_handler ();
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GSource* m_timeout_source;
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unsigned int m_timeout_interval;
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const Glib::RefPtr<Glib::MainContext> m_main_context;
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bool m_suspended;
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};
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class LIBPBD_API StandardTimer : public Timer
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{
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public:
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StandardTimer (unsigned int interval,
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const Glib::RefPtr<Glib::MainContext>& main_context = Glib::MainContext::get_default());
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sigc::connection connect (const sigc::slot<void>& slot);
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virtual unsigned int connection_count () const
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{ return m_signal.size (); }
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protected:
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virtual bool on_elapsed ();
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sigc::signal<void> m_signal;
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};
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class LIBPBD_API BlinkTimer : public Timer
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{
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public:
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BlinkTimer (unsigned int interval,
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const Glib::RefPtr<Glib::MainContext>& main_context = Glib::MainContext::get_default());
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sigc::connection connect (const sigc::slot<void, bool>& slot);
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virtual unsigned int connection_count () const
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{ return m_blink_signal.size (); }
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protected:
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virtual bool on_elapsed ();
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sigc::signal<void, bool> m_blink_signal;
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};
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} // namespace PBD
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#endif // __libpbd_timer_h__
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