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在qtwebview中捕获链接单击并在默认浏览器中打开

qtwebkit pyqt qt4 qt

Albert · 技术社区 · 15 年前

我正在qtwebview中打开一个页面(在pyqt中,如果这很重要),我想在系统默认浏览器中打开所有链接。也就是说,单击链接不应更改qtwebview中的站点,但应使用默认浏览器打开它。我想让用户不可能在qtwebview中更改站点。

我该怎么做?

谢谢, 艾伯特

2 回复 | 直到 7 年前

Albert 15 年前

就是这样:

import sys, webbrowser
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *

app = QApplication(sys.argv)
web = QWebView()

web.load(QUrl("http://www.az2000.de/projects/javascript-project/"))
web.page().setLinkDelegationPolicy(QWebPage.DelegateAllLinks)


def linkClicked(url): webbrowser.open(str(url.toString()))
web.connect(web, SIGNAL("linkClicked (const QUrl&)"), linkClicked) 


web.show()

sys.exit(app.exec_())

bst 7 年前

更新了pyqt5的示例(魔法是重新实现“acceptNavigationRequest”方法):

from PyQt5 import QtWidgets, QtCore, QtGui, QtWebEngineWidgets


class RestrictedQWebEnginePage(QtWebEngineWidgets.QWebEnginePage):
    """ Filters links so that users cannot just navigate to any page on the web,
    but just to those pages, that are listed in allowed_pages.
    This is achieved by re-implementing acceptNavigationRequest.
    The latter could also be adapted to accept, e.g. URLs within a domain."""

    def __init__(self, parent=None):
        super().__init__(parent)
        self.allowed_pages = []

    def acceptNavigationRequest(self, qurl, navtype, mainframe):
        # print("Navigation Request intercepted:", qurl)
        if qurl in self.allowed_pages:  # open in QWebEngineView
            return True
        else:  # delegate link to default browser
            QtGui.QDesktopServices.openUrl(qurl)
            return False


class RestrictedWebViewWidget(QtWidgets.QWidget):
    """A QWebEngineView is required to display a QWebEnginePage."""

    def __init__(self, parent=None, url=None, html_file=None):
        super().__init__(parent)
        self.view = QtWebEngineWidgets.QWebEngineView()
        self.page = RestrictedQWebEnginePage()

        if html_file:
            print("Loading File:", html_file)
            self.url = QtCore.QUrl.fromLocalFile(html_file)
            self.page.allowed_pages.append(self.url)
            self.page.load(self.url)
        elif url:
            print("Loading URL:", url)
            self.url = QtCore.QUrl(url)
            self.page.allowed_pages.append(self.url)
            self.page.load(self.url)

        # associate page with view
        self.view.setPage(self.page)

        # set layout
        self.vl = QtWidgets.QVBoxLayout()
        self.vl.addWidget(self.view)
        self.setLayout(self.vl)


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    web = RestrictedWebViewWidget(url="YOUR URL")  # or YOUR local HTML file
    web.show()
    sys.exit(app.exec_())