main.cpp Example File

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  #include <QImage>
  #include <QList>
  #include <QThread>
  #include <QDebug>
  #include <QGuiApplication>
  #include <qtconcurrentmap.h>

  QImage scale(const QImage &image)
  {
      qDebug() << "Scaling image in thread" << QThread::currentThread();
      return image.scaled(QSize(100, 100), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
  }

  int main(int argc, char *argv[])
  {
      QGuiApplication app(argc, argv);

      const int imageCount = 20;

      // Create a list containing imageCount images.
      QList<QImage> images;
      for (int i = 0; i < imageCount; ++i)
          images.append(QImage(1600, 1200, QImage::Format_ARGB32_Premultiplied));

      // Use QtConcurrentBlocking::mapped to apply the scale function to all the
      // images in the list.
      QList<QImage> thumbnails = QtConcurrent::blockingMapped(images, scale);

      return 0;
  }