mini browser using Qt

mr_byte31 · (This post was last modified: Aug-27-2018, 11:29 AM by mr_byte31.)

Hi All,

I try to make a mini web browser inside my python script
I got the below code from internet.
I modified it a little to add my proxy in it. (The proxy code was removed from the code. I use os.environ['HTTP_PROXY'] = .... )
The problem the webpage doesn't load :(
any idea how to fix that?

Here is my modified code:

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5 import QtWebEngineWidgets
class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(800, 600)
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")
    self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
    self.gridLayout.setObjectName("gridLayout")
    self.webView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
    self.webView.setUrl(QtCore.QUrl("http://www.google.com/"))
    self.webView.setObjectName("webView")
    self.gridLayout.addWidget(self.webView, 0, 0, 1, 1)
    MainWindow.setCentralWidget(self.centralwidget)
    self.statusbar = QtWidgets.QStatusBar(MainWindow)
    self.statusbar.setObjectName("statusbar")
    MainWindow.setStatusBar(self.statusbar)
    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)
   def retranslateUi(self, MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

from PyQt5 import QtWebEngineWidgets

if __name__ == "__main__":
   import sys
   app = QtWidgets.QApplication(sys.argv)
    if 'http_proxy' in os.environ:
        print('Proxy confgured')
        proxy_url = QtCore.QUrl(os.environ['http_proxy'])
        protocol = QtNetwork.QNetworkProxy.HttpProxy
        QtNetwork.QNetworkProxy.setApplicationProxy(
            QtNetwork.QNetworkProxy(
                protocol,
                proxy_url.host(),
                proxy_url.port(),
                proxy_url.userName(),
                proxy_url.password()))
   MainWindow = QtWidgets.QMainWindow()
   ui = Ui_MainWindow()
   ui.setupUi(MainWindow)
   MainWindow.show()
   sys.exit(app.exec_())

Axel_Erfurt · Aug-27-2018, 01:15 PM

import os

was missing and indention was wrong

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5 import QtWebEngineWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.webView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
        self.webView.setUrl(QtCore.QUrl("http://www.google.com/"))
        self.webView.setObjectName("webView")
        self.gridLayout.addWidget(self.webView, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
 
from PyQt5 import QtWebEngineWidgets
 
if __name__ == "__main__":
    import os
    import sys
    app = QtWidgets.QApplication(sys.argv)
    if 'http_proxy' in os.environ:
        print('Proxy confgured')
        proxy_url = QtCore.QUrl(os.environ['http_proxy'])
        protocol = QtNetwork.QNetworkProxy.HttpProxy
        QtNetwork.QNetworkProxy.setApplicationProxy(
            QtNetwork.QNetworkProxy(
                protocol,
                proxy_url.host(),
                proxy_url.port(),
                proxy_url.userName(),
                proxy_url.password()))

    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

mr_byte31 · (This post was last modified: Aug-27-2018, 03:01 PM by mr_byte31.)

@Axel
your code doesn't work for me. did you try it ?
As I said , I removed some parts from the code for the proxy.

here is my full code :

from PyQt5 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt5 import QtWebEngineWidgets
import os
import sys

os.environ['HTTP_PROXY'] = "Something here "
os.environ['HTTPS_PROXY'] = "Something here "
os.environ['NO_PROXY'] = "Something here "


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):            
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.webView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
        self.webView.setUrl(QtCore.QUrl("www.google.com/"))
        self.webView.setObjectName("webView")
        self.gridLayout.addWidget(self.webView, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    if 'http_proxy' in os.environ:
        print('Proxy confgured')
        proxy_url = QtCore.QUrl(os.environ['http_proxy'])
        protocol = QtNetwork.QNetworkProxy.HttpProxy
        QtNetwork.QNetworkProxy.setApplicationProxy(
            QtNetwork.QNetworkProxy(
                protocol,
                proxy_url.host(),
                proxy_url.port(),
                proxy_url.userName(),
                proxy_url.password()))
 
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

Axel_Erfurt · Aug-27-2018, 06:27 PM

The code I've posted works for me.

Your new code shows a blank page.

And you forgot http:// , should be

self.webView.setUrl(QtCore.QUrl("http://www.google.com/"))

it works by commenting (have no proxy)

#os.environ['HTTP_PROXY'] = "Something here "
#os.environ['HTTPS_PROXY'] = "Something here "
#os.environ['NO_PROXY'] = "Something here "

Code:

from PyQt5 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt5 import QtWebEngineWidgets
import os
import sys
 
#os.environ['HTTP_PROXY'] = "Something here "
#os.environ['HTTPS_PROXY'] = "Something here "
#os.environ['NO_PROXY'] = "Something here "
 
 
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):            
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.webView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
        self.webView.setUrl(QtCore.QUrl("http://www.google.com/"))
        self.webView.setObjectName("webView")
        self.gridLayout.addWidget(self.webView, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
 
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
 
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    if 'http_proxy' in os.environ:
        print('Proxy confgured')
        proxy_url = QtCore.QUrl(os.environ['http_proxy'])
        protocol = QtNetwork.QNetworkProxy.HttpProxy
        QtNetwork.QNetworkProxy.setApplicationProxy(
            QtNetwork.QNetworkProxy(
                protocol,
                proxy_url.host(),
                proxy_url.port(),
                proxy_url.userName(),
                proxy_url.password()))
    else:
        print('no Proxy confgured')
  
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

mr_byte31 · Aug-27-2018, 07:19 PM

I think the "http://" was the problem :(
many thanks

mini browser using Qt

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