imageobject.cpp Example File

image-gallery-cpp/imageobject.cpp

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  #include "imageobject.h"

  #include <QtNetwork>
  #include <Enginio/enginioclient.h>
  #include <Enginio/enginioreply.h>

  ImageObject::ImageObject(EnginioClient *enginio)
      : m_enginio(enginio)
  {}

  void ImageObject::setObject(const QJsonObject &object)
  {
      m_object = object;
      QString fileId;
      fileId = object.value("file").toObject().value("id").toString();

      if (!fileId.isEmpty()) {
          QJsonObject fileObject;
          fileObject.insert("id", fileId);
          fileObject.insert("variant", QString("thumbnail"));
          EnginioReply *reply = m_enginio->downloadUrl(fileObject);
          connect(reply, SIGNAL(finished(EnginioReply*)), this, SLOT(replyFinished(EnginioReply*)));
      } else {
          // Try to fall back to the local file
          QString localPath = object.value("localPath").toString();
          if (QFile::exists(localPath)) {
              m_image = QImage(localPath);
              emit imageChanged(object.value("id").toString());
          }
      }
  }

  void ImageObject::replyFinished(EnginioReply *enginioReply)
  {
      QString url = enginioReply->data().value("expiringUrl").toString();
      QNetworkRequest request(url);
      m_reply = m_enginio->networkManager()->get(request);
      m_reply->setParent(this);
      connect(m_reply, SIGNAL(finished()), this, SLOT(downloadFinished()));
  }

  void ImageObject::downloadFinished()
  {
      QByteArray imageData = m_reply->readAll();
      m_image.loadFromData(imageData);
      emit imageChanged(m_object.value("id").toString());

      m_reply->deleteLater();
      m_reply = 0;
  }

  QPixmap ImageObject::thumbnail()
  {
      if (m_image.isNull() || !m_thumbnail.size().isNull())
          return m_thumbnail;
      m_thumbnail = QPixmap::fromImage(m_image.scaled(100, 100, Qt::KeepAspectRatio, Qt::SmoothTransformation));
      return m_thumbnail;
  }