progress.h

/********************************************************************
 * Copyright (C) 2015-2021 by Liangliang Nan <liangliang.nan@gmail.com>
 * Copyright (C) 2000-2005 INRIA - Project ALICE
 *
 * The code in this file is partly from OGF/Graphite (2.0 alpha-4) with
 * modifications and enhancement:
 *      https://gforge.inria.fr/forum/forum.php?forum_id=11459
 * The original code was distributed under the GNU GPL license.
 ********************************************************************/
 
#ifndef EASY3D_UTIL_PROGRESS_H
#define EASY3D_UTIL_PROGRESS_H
 
 
#include <string>
 
 
namespace easy3d {

    class ProgressClient {
    public:
        ProgressClient();
        virtual ~ProgressClient() = default;
        virtual void notify(std::size_t percent, bool update_viewer) = 0;
        virtual void cancel();
    };
 
    //_________________________________________________________

    class ProgressLogger {
    public:
        ProgressLogger(std::size_t max_val, bool update_viewer, bool quiet = false);
        virtual ~ProgressLogger();
        virtual void notify(std::size_t new_value);
        virtual void next();
        virtual void done() { notify(max_val_); }
        bool is_canceled() const;

        void reset() { notify(0); }
        void reset(std::size_t max_val);
 
    protected:
        virtual void update();
 
    private:
        std::size_t max_val_;
        std::size_t cur_val_;
        std::size_t cur_percent_;
        bool quiet_;
        bool update_viewer_;
    };

    void print_progress(float percentage);
 
}   // namespace easy3d
 
 
#endif  // EASY3D_UTIL_PROGRESS_H