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path: root/examples/network/downloadmanager/textprogressbar.cpp
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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "textprogressbar.h"
#include <QByteArray>
#include <stdio.h>

TextProgressBar::TextProgressBar()
    : value(0), maximum(-1), iteration(0)
{
}

void TextProgressBar::clear()
{
    printf("\n");
    fflush(stdout);

    iteration = 0;
    value = 0;
    maximum = -1;
}

void TextProgressBar::update()
{
    ++iteration;

    if (maximum > 0) {
        // we know the maximum
        // draw a progress bar
        int percent = value * 100 / maximum;
        int hashes = percent / 2;

        QByteArray progressbar(hashes, '#');
        if (percent % 2)
            progressbar += '>';

        printf("\r[%-50s] %3d%% %s     ",
               progressbar.constData(),
               percent,
               qPrintable(message));
    } else {
        // we don't know the maximum, so we can't draw a progress bar
        int center = (iteration % 48) + 1; // 50 spaces, minus 2
        QByteArray before(qMax(center - 2, 0), ' ');
        QByteArray after(qMin(center + 2, 50), ' ');

        printf("\r[%s###%s]      %s      ",
               before.constData(), after.constData(), qPrintable(message));
    }
}

void TextProgressBar::setMessage(const QString &m)
{
    message = m;
}

void TextProgressBar::setStatus(qint64 val, qint64 max)
{
    value = val;
    maximum = max;
}