QPrintPreviewDialog - good preview but incorrect printing on Windows 7

thierebassi

Hi All,
I am having a printing problem with PyQt-5.4.1 for Python 3.4.1/Windows 7.
I want to print an HTML document and the following is my testing code (QWebview and QPrintPreviewDialog):

import sys, os
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5 import QtWebKitWidgets
from PyQt5.QtPrintSupport import QPrintPreviewDialog, QPrinter

class appFormPrintWebviev(QtWebKitWidgets.QWebView):
   def __init__(self, parent=None, ):
          super(appFormPrintWebviev,self).__init__(parent)
         self.loadFinished.connect(self.printPreview)
         self.drawActeNaissance()

    def printPreview(self):

        dialog = QPrintPreviewDialog(self.printer)
        dialog.setWindowState(Qt.WindowMaximized)
        dialog.paintRequested.connect(self.print_)
        dialog.setWindowFlags(Qt.CustomizeWindowHint | Qt.WindowTitleHint | Qt.WindowMinMaxButtonsHint | Qt.WindowCloseButtonHint | Qt.WindowContextHelpButtonHint)
        dialog.exec()

    def drawActeNaissance(self):
        import codecs
        html = codecs.open(b"template.html",encoding='utf-8').read()
        baseurl = QUrl.fromLocalFile(os.path.join(os.getcwd(),"index.html"))
        self.setHtml(html, baseurl)
        self.printer = QPrinter();
        self.printer.setPageSize(QPrinter.A4);
        self.printer.setOrientation(QPrinter.Portrait);
        self.printer.setPageMargins(10,10,10,10,QPrinter.Millimeter);
        self.setFixedWidth(1000)

if __name__ == '__main__':
        app = QApplication(sys.argv)
        form = appFormPrintWebviev()
        form.show()
        sys.exit(app.exec_())

My problem is that the QPrintPreviewDialog correctly displays the document in previewing window (see: http://s1.postimg.org/fc4ctwian/Print_Preview.png), but the document is not correctly printed. The printer, PDFCreator, prints a disorganized document (see: http://s15.postimg.org/kj940hb23/final_printed_doc.png)

I don't know why, but the same code with adaptations works perfectly in PyQt-4.10.4 and Python 2.7.

Thieré
Regards

PS : I have already posted this message to PyQT list but I havd no answer.

thierebassi

After a looking around Qt BugTracker
it seams that it is a known problem from QT 5.0.1 which has desapeared in version 5.3 and reappeared in 5.4.
https://bugreports.qt.io/browse/QTBUG-36308
But it is not solved yet I think for official version of Qt 5.4.1 https://bugreports.qt.io/browse/QTBUG-43145
Even if patch seems to be available https://codereview.qt-project.org/#/c/111658/

thierebassi

I solved I by moving from PyQT5.4.1 to PyQT5.3.2.