Created
May 30, 2019 05:56
-
-
Save jkariscodes/6c18469357d7e0b472faad2e9a0ecf6d to your computer and use it in GitHub Desktop.
pyqt web view
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import sys | |
| from PyQt4.QtCore import QTimer, QVariant, SIGNAL | |
| from PyQt4.QtGui import * | |
| from PyQt4.QtNetwork import QNetworkAccessManager, QNetworkRequest, QNetworkReply | |
| from PyQt4.QtWebKit import QWebView | |
| html = """<html> | |
| <head> | |
| <title>Test page for the download:// scheme</title> | |
| </head> | |
| <body> | |
| <h1>Downloads</h1> | |
| <a href="download://myfile">Download a file</a> | |
| <hr /> | |
| <a href="http://www.google.com">A normal link</a> | |
| </body> | |
| </html> | |
| """ | |
| # class that returns data to browser | |
| class DownloadReply: | |
| def __init__(self, parent, url, operation): | |
| QNetworkReply.__init__(self, parent) | |
| self.content = "<html><head><title>Test</title></head><body>This is a test.</body></html>" | |
| self.content = "<html><head><title>Test</title></head><body>This is a test.</body></html>" | |
| self.offset = 0 | |
| self.setHeader(QNetworkRequest.ContentTypeHeader, QVariant("text/html; charset=ASCII")) | |
| self.setHeader(QNetworkRequest.ContentLengthHeader, QVariant(len(self.content))) | |
| QTimer.singleShot(0, self, SIGNAL("readyRead()")) | |
| QTimer.singleShot(0, self, SIGNAL("finished()")) | |
| self.open(self.ReadOnly | self.Unbuffered) | |
| self.setUrl(url) | |
| def abort(self): | |
| pass | |
| def bytesAvailable(self): | |
| # NOTE: | |
| # This works for Win: | |
| # return len(self.content) - self.offset | |
| # but it does not work under OS X. | |
| # Solution which works for OS X and Win: | |
| # return len(self.content) - self.offset + QNetworkReply.bytesAvailable(self) | |
| return len(self.content) - self.offset | |
| def isSequential(self): | |
| return True | |
| def readData(self, maxSize): | |
| if self.offset < len(self.content): | |
| end = min(self.offset + maxSize, len(self.content)) | |
| data = self.content[self.offset:end] | |
| self.offset = end | |
| return data | |
| class NetworkAccessManager(QNetworkAccessManager): | |
| def __init__(self, old_manager): | |
| QNetworkAccessManager.__init__(self) | |
| self.old_manager = old_manager | |
| self.setCache(old_manager.cache()) | |
| self.setCookieJar(old_manager.cookieJar()) | |
| self.setProxy(old_manager.proxy()) | |
| self.setProxyFactory(old_manager.proxyFactory()) | |
| def createRequest(self, operation, request, data): | |
| if request.url().scheme() != "download": | |
| return QNetworkAccessManager.createRequest(self, operation, request, data) | |
| if operation == self.GetOperation: | |
| # Handle download:// URLs separately by creating custom | |
| # QNetworkReply objects. | |
| reply = DownloadReply(self, request.url(), self.GetOperation) | |
| return reply | |
| else: | |
| return QNetworkAccessManager.createRequest(self, operation, request, data) | |
| if __name__ == "__main__": | |
| app = QApplication(sys.argv) | |
| view = QWebView() | |
| old_manager = view.page().networkAccessManager() | |
| new_manager = NetworkAccessManager(old_manager) | |
| view.page().setNetworkAccessManager(new_manager) | |
| view.setHtml(html) | |
| view.show() | |
| sys.exit(app.exec_()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment