A thumbnail thing :D

thumbnails.cpp

class ThumbnailRunnable: public QRunnable
{
public:
	ThumbnailRunnable (QString path, SharedIconCache cache)
	{
		m_path = path;
		m_cache = cache;
	}
	void run()
	{
		QFileInfo info(m_path);
		if(info.isDir())
			return;
		if((info.suffix().compare("png", Qt::CaseInsensitive) != 0))
			return;
		int tries = 5;
		while(tries)
		{
			QImage image(m_path);
			if (image.isNull())
			{
				QThread::sleep(500);
				tries--;
				continue;
			}
			QImage thumbnail = image.scaledToWidth(512).scaledToWidth(256, Qt::SmoothTransformation);
			QIcon icon(QPixmap::fromImage(thumbnail));
			((SharedIconCache &)m_cache)->add(m_path, icon);
			m_resultEmitter.emitResultsReady(m_path);
			return;
		}
	}
	QString m_path;
	SharedIconCache m_cache;
	ThumbnailingResult m_resultEmitter;
};