progress.cpp

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/* 
 * progress.cpp: Simple progress bar
 * Copyright (C) 2015  D Haley
 * 
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "atomprobe/helper/progress.h"

#include <iostream>
#include <cstdlib>

using std::endl;
using std::cerr;

namespace AtomProbe{

ProgressBar::~ProgressBar()
{
    if(printEnd)
        finish();   
}

void ProgressBar::init()
{
    cerr << endl << "|" ;
    for(size_t ui=0;ui<length;ui++)
        cerr << "-";
    cerr << "|" << endl <<"|";
}

void ProgressBar::reset()
{
    accumulatedTicks=0;
    lastProg=0;
    length=100;
    printEnd=true;
}


void ProgressBar::finish()
{
    update(100);
}


void ProgressBar::update(unsigned int progress)
{
    if(!printEnd)
        return;
    unsigned int delta;

    delta = progress-lastProg;
    lastProg=progress;

    float ticks  = ((float)delta*(float)length/100.0f);
    accumulatedTicks+=ticks;

    if(accumulatedTicks >=1.0f)
    {   

        delta=accumulatedTicks;
        accumulatedTicks-=delta;

        while(delta--) 
            cerr << ".";
    }

    if(progress >= 100)
    {
        cerr << "| Done." << endl;
        printEnd=false;
    }
}

#ifdef DEBUG
bool testProgressBar()
{
    ProgressBar pb;
    pb.setLength(50);

    pb.init();
    pb.update(24);
    pb.finish();

    return true;
}
#endif
}