textprogressbar.cpp Example File

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  #include "textprogressbar.h"

  #include <QByteArray>

  #include <cstdio>

  using namespace std;

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

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

  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;
  }