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