Qt Reference Documentation

textprogressbar.cpp Example File

network/downloadmanager/textprogressbar.cpp
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 #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;
 }
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