vcs.maemo.org Git - qtrapids/blob - src/plugins/searchplugin/DownloadManager.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Lassi Väätämöinen   *
   3  *   lassi.vaatamoinen@ixonos.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include <QDebug>
  22
  23 #include "DownloadManager.h"
  24
  25
  26 DownloadManager::DownloadManager(QObject *parent) :
  27         QObject(parent) // Superclass construct
  28 {
  29 }
  30
  31 DownloadManager::DownloadManager(QUrl url, QString outfile, QObject *parent) :
  32         QObject(parent), // Superclass construct
  33         url_(url),
  34         filepath_(outfile),
  35         file_(QString(outfile))
  36 {
  37         file_.open(QIODevice::WriteOnly);
  38 }
  39
  40
  41 DownloadManager::~DownloadManager()
  42 {
  43         file_.close();
  44         delete reply_; reply_ = NULL;
  45 }
  46
  47
  48 void DownloadManager::start()
  49 {
  50         reply_ = manager_.get(QNetworkRequest(url_));
  51
  52         connect(reply_, SIGNAL(readyRead()), this, SLOT(on_readyRead()));
  53         connect(reply_, SIGNAL(downloadProgress (qint64 , qint64)), SLOT(on_downloadProgress(qint64, qint64)));
  54         connect(reply_, SIGNAL(finished()), this, SLOT(on_replyFinished()));
  55 }
  56
  57
  58 void DownloadManager::on_readyRead()
  59 {
  60         //qDebug() << "on_readyRead()";
  61          WriteToFile();
  62 }
  63
  64 void DownloadManager::on_downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
  65 {
  66         static double last = 0;
  67
  68         double prog = static_cast<double>(bytesReceived) / static_cast<double>(bytesTotal);
  69         if ((prog-last) >= 0.01) {
  70                 last = prog;
  71                 emit progress(static_cast<int>(100*prog));
  72         } else if (bytesReceived == bytesTotal) {
  73                 emit progress(100);
  74         }
  75
  76 }
  77
  78 void DownloadManager::on_replyFinished()
  79 {
  80         WriteToFile();
  81         file_.close();
  82         emit finished(filepath_);
  83 }
  84
  85
  86 void DownloadManager::WriteToFile()
  87 {
  88         QByteArray readData = reply_->readAll();
  89
  90         if (readData.isEmpty()) {
  91                 qDebug() << "on_replyFinished(): No data available for reading";
  92         } else {
  93                 file_.write(readData);
  94                 /// @todo check file_.error()
  95         }
  96 }