git.maemo.org Git - situare/blob - src/situareservice/imagefetcher.cpp

   1 /*
   2    Situare - A location system for Facebook
   3    Copyright (C) 2010  Ixonos Plc. Authors:
   4
   5       Henri Lampela - henri.lampela@ixonos.com
   6
   7    Situare is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License
   9    version 2 as published by the Free Software Foundation.
  10
  11    Situare is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with Situare; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  19    USA.
  20 */
  21
  22 #include <QDebug>
  23 #include <QNetworkReply>
  24 #include <QNetworkRequest>
  25 #include <QPixmap>
  26
  27 #include "error.h"
  28 #include "network/networkaccessmanager.h"
  29
  30 #include "imagefetcher.h"
  31
  32 ImageFetcher::ImageFetcher(NetworkAccessManager *manager, QObject *parent)
  33     : QObject(parent)
  34     , m_manager(manager)
  35 {
  36     qDebug() << __PRETTY_FUNCTION__;
  37
  38     connect(m_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(
  39             downloadFinished(QNetworkReply*)));
  40 }
  41
  42 void ImageFetcher::fetchImage(const QUrl &url)
  43 {
  44     qDebug() << __PRETTY_FUNCTION__;
  45
  46     m_downloadQueue.enqueue(url);
  47
  48     startNextDownload();
  49 }
  50
  51 void ImageFetcher::startNextDownload()
  52 {
  53     qDebug() << __PRETTY_FUNCTION__;
  54
  55     QUrl url = m_downloadQueue.dequeue();
  56
  57     QNetworkRequest request(url);
  58     request.setAttribute(QNetworkRequest::CacheSaveControlAttribute, false);
  59     request.setRawHeader("User-Agent", "Situare");
  60     QNetworkReply *reply = m_manager->get(request);
  61
  62     m_currentDownloads.append(reply);
  63 }
  64
  65 void ImageFetcher::downloadFinished(QNetworkReply *reply)
  66 {
  67     qDebug() << __PRETTY_FUNCTION__;
  68
  69     //Reply from Facebook
  70     if (m_currentDownloads.contains(reply)) {
  71
  72         if (reply->error() == QNetworkReply::NoError) {
  73             QPixmap image;
  74             QUrl url = reply->url();
  75
  76             if (!image.loadFromData(reply->readAll(), 0))
  77                 image = QPixmap();
  78
  79             emit imageReceived(url, image);
  80         }
  81         else {
  82             emit error(ErrorContext::SITUARE, SituareError::IMAGE_DOWNLOAD_FAILED);
  83         }
  84
  85         m_currentDownloads.removeAll(reply);
  86         reply->deleteLater();
  87
  88         if (!m_downloadQueue.isEmpty())
  89             startNextDownload();
  90     }
  91 }