PyQt5: mouseClick and source code in QWebEngineView

Question

I have a working script that uses PyQt-5.5.1, which I now want to transfer to the new version of PyQt (5.7). The adaptation of most things was great, but I ran into two serious problems: (1) execute (simulated) mouseclick, (2) access (let’s say: print) the html source code of the webpage that is currently displayed in QWebView or QWebEngineView , respectively.

For example, I can do the following using QWebView in PyQt-5.5.1:

QTest.mouseClick(self.wvTest, Qt.LeftButton, QPoint(x, y))

and

frame = self.wvTest.page().mainFrame()
print(frame.toHtml().encode('utf-8'))

I know docs , as well as this page about porting to QWebEngineView, but unable to convert C ++ notation to working Python code.

How can I adapt this to QWebEngineView in PyQt-5.7? Below is the full excerpt for PyQt-5.5.1, which is not suitable for the new version of PyQt:

• for Button1: no response to a mouse click.
• Button2 to: AttributeError: 'QWebEnginePage' object has no attribute 'mainFrame', and when I remove the mainframe () TypeError: toHtml(self, Callable[..., None]): not enough arguments.

import sys
from PyQt5.QtWidgets import QWidget, QPushButton, QApplication
from PyQt5.QtCore import QRect, Qt, QUrl, QPoint, QEvent
from PyQt5.QtTest import QTest
from PyQt5.Qt import PYQT_VERSION_STR

if PYQT_VERSION_STR == '5.5.1': from PyQt5 import QtWebKitWidgets else: from PyQt5 import QtWebEngineWidgets

class Example(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.button1 = QPushButton('Button1', self) self.button1.clicked.connect(self.buttonOne) self.button1.setGeometry(QRect(10, 10, 90, 20)) self.button2 = QPushButton('Button2', self) self.button2.clicked.connect(self.buttonTwo) self.button2.setGeometry(QRect(110, 10, 90, 20)) if PYQT_VERSION_STR=='5.5.1': self.wvTest = QtWebKitWidgets.QWebView(self) else: self.wvTest = QtWebEngineWidgets.QWebEngineView(self) self.wvTest.setGeometry(QRect(10, 40, 430, 550)) self.wvTest.setUrl(QUrl('http://www.startpage.com')) self.wvTest.setObjectName('wvTest') self.setGeometry(300, 300, 450, 600) self.setWindowTitle('WebView minimalistic') self.show() def buttonOne(self): qp = QPoint(38, 314) QTest.mouseClick(self.wvTest, Qt.LeftButton, pos=qp) # or: QTest.mouseMove(self.wvTest, pos=self.qp) print('Button1 pressed.') def buttonTwo(self): frame = self.wvTest.page().mainFrame() print(frame.toHtml().encode('utf-8')) if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_())

Answer 1

QWebEngineView QWebView. , API , . , , , . , ( ).

QTBUG-43602. QWebEngineView , QOpenGLWidget , :

class Example(QWidget):
    ...

    def initUI(self):
        ...    
        self._glwidget = None

        if PYQT_VERSION_STR=='5.5.1':
            self.wvTest = QtWebKitWidgets.QWebView(self)
        else:
            self.wvTest = QtWebEngineWidgets.QWebEngineView(self)
            self.wvTest.installEventFilter(self)
        ...

    def eventFilter(self, source, event):
        if (event.type() == QEvent.ChildAdded and
            source is self.wvTest and
            event.child().isWidgetType()):
            self._glwidget = event.child()
            self._glwidget.installEventFilter(self)
        elif (event.type() == QEvent.MouseButtonPress and
              source is self._glwidget):
            print('web-view mouse-press:', event.pos())
        return super().eventFilter(source, event)

    def buttonOne(self):
        qp = QPoint(38, 314)
        widget = self._glwidget or self.wvTest
        QTest.mouseClick(widget, Qt.LeftButton, pos=qp)

html , API - . API - ( javascript), -:

    def buttonTwo(self):
        if PYQT_VERSION_STR=='5.5.1':
            print(self.wvTest.page().toHtml())
        else:
            self.wvTest.page().toHtml(self.processHtml)

    def processHtml(self, html):
        print(html)