import sys, os
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtNetwork import *
class QDownloader(QProgressDialog):
  def __init__(self, parent=None):
    QProgressDialog.__init__(self, parent)
    self.parent = parent
    self.url = "https://sourceforge.net/projects/python-jake/files/betas/Jake-PyQT4-0.1.zip/download"
    #self.url = "http://www.foro3d.com/attachments/51633d1181932251-ultimos-render-3d-max-vry-photoshop-puente-genil.jpg"
    self.downloadPath = "/tmp/tmpreadfile"
    self.manager = QNetworkAccessManager()
    self.resize(self.size().width()*2, self.size().height())
    self.manager.finished.connect(self.downloadFinished)
    self.canceled.connect(self.cancelDownload)
    self.show()
    self.download()

  def download(self):
    self.url = QUrl(self.url)
    self.reply = self.manager.get(QNetworkRequest(self.url))
    self.reply.downloadProgress.connect(self.updateDataReadProgress)

  def updateDataReadProgress(self, done, total):
    print "UPDATE: " + str(done) + " of " + str(total)
    self.setMaximum(total)
    self.setValue(done)

  def downloadFinished(self, reply):
    redirect = reply.attribute(QNetworkRequest.RedirectionTargetAttribute).toUrl()
    print "ERROR: " + str(reply.attribute(QNetworkRequest.HttpStatusCodeAttribute).toInt())
    print "HEADER: " + str(reply.header(2).toString())
    if not redirect.isEmpty():
      print "REDIRECT: " + str(redirect)
      self.reply = self.manager.get(QNetworkRequest(redirect))
      self.reply.downloadProgress.connect(self.updateDataReadProgress)
    else:
      self.updateFile = QFile(self.downloadPath)
      self.updateFile.open(QIODevice.WriteOnly)
      self.updateFile.write(self.reply.readAll())
      self.updateFile.close()
      self.reply.deleteLater()
      self.manager.deleteLater()
    reply.deleteLater()

  def cancelDownload(self):
    self.reply.abort()

app = QtGui.QApplication(sys.argv)
window = QDownloader()
sys.exit(app.exec_())