Jake Code

# -*- coding: utf-8 -*-
import os, sys, urllib
from threading import Thread
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class QDownloader(QProgressDialog):
  def __init__(self, parent=None):
    QProgressDialog.__init__(self, parent)
    self.parent = parent
    self.ok = True
    self.resize(self.size().width()*2, self.size().height())
    self.canceled.connect(self.cancelDownload)
    self.connect(self, SIGNAL("updateProgress(PyQt_PyObject, PyQt_PyObject, PyQt_PyObject, PyQt_PyObject)"), self.updateProgress)

  def updateProgress(self, numblocks, blocksize, filesize, url=None):
    self.setMaximum(filesize)
    self.setValue(numblocks*blocksize)
    if numblocks*blocksize > filesize:
      self.thread._Thread__stop()
      self.hide()

  def dld(self, url, path):
    try:
      urllib.urlretrieve(url, path, lambda nb, bs, fs, url=url: self.emit(QtCore.SIGNAL("updateProgress(PyQt_PyObject, PyQt_PyObject, PyQt_PyObject, PyQt_PyObject)"), nb, bs, fs, url))
    except BaseException, e:
      pass

  def download(self, url, path):
    self.thread = Thread(target=self.dld, args=(url, path))
    self.thread.start()
    self.show()
    self.exec_()
    return self.ok

  def cancelDownload(self):
    self.ok = False
    self.thread._Thread__stop()