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 <QNetworkRequest>
  24 #include <QNetworkReply>
  25 #include <QPixmap>
  26 #include "imagefetcher.h"
  27 #include "network/networkaccessmanager.h"
  28 #include "common.h"
  29
  30 ImageFetcher::ImageFetcher(NetworkAccessManager *manager, QObject *parent)
  31     : QObject(parent)
  32     , m_manager(manager)
  33 {
  34     qDebug() << __PRETTY_FUNCTION__;
  35
  36     connect(m_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(
  37             downloadFinished(QNetworkReply*)));
  38 }
  39
  40 void ImageFetcher::fetchImage(const QUrl &url)
  41 {
  42     qDebug() << __PRETTY_FUNCTION__;
  43
  44     m_downloadQueue.enqueue(url);
  45
  46     startNextDownload();
  47 }
  48
  49 void ImageFetcher::startNextDownload()
  50 {
  51     qDebug() << __PRETTY_FUNCTION__;
  52
  53     QUrl url = m_downloadQueue.dequeue();
  54
  55     QNetworkRequest request(url);
  56     request.setAttribute(QNetworkRequest::CacheSaveControlAttribute, false);
  57     request.setRawHeader("User-Agent", "Situare");
  58     QNetworkReply *reply = m_manager->get(request);
  59
  60     m_currentDownloads.append(reply);
  61 }
  62
  63 void ImageFetcher::downloadFinished(QNetworkReply *reply)
  64 {
  65     qDebug() << __PRETTY_FUNCTION__;
  66
  67     //Reply from Facebook
  68     if (m_currentDownloads.contains(reply)) {
  69
  70         if (reply->error() == QNetworkReply::NoError) {
  71             QPixmap image;
  72             QUrl url = reply->url();
  73
  74             if (!image.loadFromData(reply->readAll(), 0))
  75                 image = QPixmap();
  76
  77             emit imageReceived(url, image);
  78         }
  79         else {
  80             emit error(SituareError::IMAGE_DOWNLOAD_FAILED);
  81         }
  82
  83         m_currentDownloads.removeAll(reply);
  84         reply->deleteLater();
  85
  86         if (!m_downloadQueue.isEmpty())
  87             startNextDownload();
  88     }
  89 }