source: trunk/examples/network/downloadmanager/textprogressbar.cpp@ 1168

/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/

#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;
}