asyncrenderer.h

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/* === S Y N F I G ========================================================= */
/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_ASYNCRENDERER_H
#define __SYNFIG_ASYNCRENDERER_H

/* === H E A D E R S ======================================================= */

#include <ETL/handle>
#include <sigc++/signal.h>
#include <sigc++/trackable.h>
#include <sigc++/connection.h>

#include <synfig/target_scanline.h>
#include <synfig/target_tile.h>
#include <synfig/target_cairo.h>
#include <synfig/target_cairo_tile.h>
#include <synfig/surface.h>
#include <glibmm/main.h>
#include <ETL/ref_count>
#include <glibmm/thread.h>
#include <glibmm/dispatcher.h>

#include "app.h"

/* === M A C R O S ========================================================= */

// uncomment define SINGLE_THREADED to use a single thread, and hopefully get more stability (dooglus) 
// changed to be default if using windows (Nov 2009 pixelgeek) - see app.h
#ifdef SINGLE_THREADED
#  define single_threaded() App::single_threaded
#endif

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

namespace studio {

class AsyncRenderer : public etl::shared_object, public sigc::trackable
{
    sigc::signal<void> signal_finished_;
    sigc::signal<void> signal_success_;

    std::list<sigc::connection> activity_connection_list;
    
    etl::handle<synfig::Target> target;

    bool error;
    bool success;

    synfig::ProgressCallback *cb;
    sigc::signal<void> signal_stop_;

    Glib::Thread* render_thread;
    Glib::Dispatcher signal_done_;
    Glib::Mutex mutex;
    sigc::connection done_connection;

    Glib::TimeVal start_time;
    Glib::TimeVal finish_time;

    /*
 -- ** -- P A R E N T   M E M B E R S -----------------------------------------
    */
public:

    AsyncRenderer(etl::handle<synfig::Target> target,synfig::ProgressCallback *cb=0);
    virtual ~AsyncRenderer();

    void start();
    void stop();
    void pause();
    void resume();
#ifdef SINGLE_THREADED
    void rendering_progress();
    bool updating;
#endif

    bool has_error()const { return error; }
    bool has_success()const { return success; }
    synfig::Real get_execution_time() const { return (finish_time - start_time).as_double(); }

    sigc::signal<void>& signal_finished() { return signal_finished_; }
    sigc::signal<void>& signal_success() { return signal_success_; }

private:

    void render_target();
    void start_();

    /*
 -- ** -- C H I L D   M E M B E R S -------------------------------------------
    */

protected:

};

}; // END of namespace studio

/* === E N D =============================================================== */

#endif