Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. Language Bindings
  4. Printing QWidget window using python

Printing QWidget window using python

Scheduled Pinned Locked Moved Solved Language Bindings
python
22 Posts 2 Posters 14.2k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • khakhilK khakhil

    @mrjj

    The link http://stackoverflow.com/questions/8193920/print-a-text-through-a-printer-using-pyqt4
    is very helpful. I solved 90% of my problem.
    now, the problem is that as i select the image to print, the printer not getting the image.
    instead of image it takes "ÿØÿà" and prints it.

    what i do?

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #10

    @khakhil
    it looks like it prints the pointer?
    did you use painter.drawPixmap ?

    khakhilK 1 Reply Last reply
    1
    • mrjjM mrjj

      @khakhil
      it looks like it prints the pointer?
      did you use painter.drawPixmap ?

      khakhilK Offline
      khakhilK Offline
      khakhil
      wrote on last edited by
      #11

      @mrjj
      not working :( :(

      mrjjM 1 Reply Last reply
      0
      • khakhilK khakhil

        @mrjj
        not working :( :(

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #12

        @khakhil said:
        still getting?

        "ÿØÿà

        can you post the code. maybe someone can spot the issue :)

        1 Reply Last reply
        0
        • khakhilK Offline
          khakhilK Offline
          khakhil
          wrote on last edited by
          #13

          @mrjj

                if info.completeSuffix() == 'html':
                     self.editor.setHtml(text)
                 else:
                     self.editor.setPlainText(text)
          

          is there any way like this for .jpg or .tif format ???

          for the same issue i am also trying the following as @mrjj suggest

          class Window(QtGui.QWidget):
            def __init__(self):
              super(Window, self).__init__()
              self._new_window = None
              
              printer = QtGui.QPrinter()
              Pixmap = QtGui.QPixmap()
              pix = QPixmap.grabWindow(QApplication.desktop().winId())
              printer.setOrientation(printer.Landscape)
              Painter= QtGui.QPainter() 
              Painter.begin(printer)
              xscale = printer.pageRect().width() / (pix.width())
              yscale = printer.pageRect().height() / (pix.height())
              scale = qmin(xscale, yscale)
              Painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2,
                                printer.paperRect().y() + printer.pageRect().height() / 2);
              Painter.scale(scale, scale)
              Painter.translate(-width() / 2, -height() / 2)
              Painter.drawPixmap(0, 0, pix)
              Painter.end()
          

          but not succeed.

          1 Reply Last reply
          0
          • mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #14

            so it just print "ÿØÿà on piece of paper?
            or?

            khakhilK 1 Reply Last reply
            0
            • mrjjM mrjj

              so it just print "ÿØÿà on piece of paper?
              or?

              khakhilK Offline
              khakhilK Offline
              khakhil
              wrote on last edited by
              #15

              @mrjj
              yes.. it is printing sometimes II* and sometimes "ÿØÿà" .

              mrjjM 1 Reply Last reply
              0
              • khakhilK khakhil

                @mrjj
                yes.. it is printing sometimes II* and sometimes "ÿØÿà" .

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #16

                @khakhil said:

                def init(self):

                can you try to move the code to a button? ( to a clicked slot)

                I assume
                def init(self):
                is the constructor?
                Might not be the best spot as object might not be fully shown or
                the (QApplication.desktop().winId()) dont return what we think.

                Could u also add a Painter.drawText(200,200, "hello") and see if that comes.?

                khakhilK 1 Reply Last reply
                0
                • mrjjM mrjj

                  @khakhil said:

                  def init(self):

                  can you try to move the code to a button? ( to a clicked slot)

                  I assume
                  def init(self):
                  is the constructor?
                  Might not be the best spot as object might not be fully shown or
                  the (QApplication.desktop().winId()) dont return what we think.

                  Could u also add a Painter.drawText(200,200, "hello") and see if that comes.?

                  khakhilK Offline
                  khakhilK Offline
                  khakhil
                  wrote on last edited by
                  #17

                  @mrjj
                  hey thanks..
                  this code is working properly.

                   printer = QtGui.QPrinter()
                      Pixmap = QtGui.QPixmap() 
                      pix= QPixmap.grabWindow(loginwindow.winId())
                      Painter= QtGui.QPainter() 
                      Painter.begin(printer)
                      
                      Painter.drawPixmap(50, 490, pix)
                      Painter.end()        
                  

                  It saves images every time i ran the code .
                  what should i do if i don't want to save it but directly print it????

                  1 Reply Last reply
                  0
                  • mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #18

                    hi
                    it should print the image.
                    code looks ok.

                    could u try display the image in a label?
                    self.label.setPixmap(pix)

                    to see what u grab

                    1 Reply Last reply
                    0
                    • khakhilK Offline
                      khakhilK Offline
                      khakhil
                      wrote on last edited by
                      #19

                      @mrjj
                      thank you so much for help !!
                      problem solved :) :)

                      printer = QtGui.QPrinter()
                        Pixmap = QtGui.QPixmap() 
                        pix= QPixmap.grabWindow(loginwindow.winId())
                        Painter= QtGui.QPainter() 
                        Painter.begin(printer)
                      
                        Painter.drawPixmap(50, 490, pix)
                        Painter.end()      
                      

                      same code works for grab screenshot and print it.

                      thanks @mrjj

                      mrjjM 1 Reply Last reply
                      1
                      • khakhilK khakhil

                        @mrjj
                        thank you so much for help !!
                        problem solved :) :)

                        printer = QtGui.QPrinter()
                          Pixmap = QtGui.QPixmap() 
                          pix= QPixmap.grabWindow(loginwindow.winId())
                          Painter= QtGui.QPainter() 
                          Painter.begin(printer)
                        
                          Painter.drawPixmap(50, 490, pix)
                          Painter.end()      
                        

                        same code works for grab screenshot and print it.

                        thanks @mrjj

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #20

                        @khakhil
                        super! :)
                        as a little note.
                        If printer has high DPI, image might become really small.
                        if that happens u can use the scale function of the pixmap to make it bigger or
                        use the Painter.translate() as c++ sample showed :)

                        1 Reply Last reply
                        0
                        • mrjjM mrjj

                          @khakhil
                          HI
                          you will need a way to select real printer
                          then load the image from file
                          and draw onto a painter connected to the selected printer.

                          try to play around with this sample
                          http://stackoverflow.com/questions/8193920/print-a-text-through-a-printer-using-pyqt4
                          its with preview and all so maybe over the top

                          here is c++ function that grabs screenshot and print it.
                          (thx to @Ni-Sumi)

                          void MainWindow::printPage() {
                            QPixmap pix = QPixmap::grabWindow(QApplication::desktop()->winId());
                            QPrinter printer(QPrinter::HighResolution);
                            printer.setOrientation(QPrinter::Landscape);
                            QPainter painter;
                            painter.begin(&printer);
                            double xscale = printer.pageRect().width() / double(pix.width());
                            double yscale = printer.pageRect().height() / double(pix.height());
                            double scale = qMin(xscale, yscale);
                            painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2,
                                              printer.paperRect().y() + printer.pageRect().height() / 2);
                            painter.scale(scale, scale);
                            painter.translate(-width() / 2, -height() / 2);
                            painter.drawPixmap(0, 0, pix);
                            painter.end();
                          }
                          

                          I assume u can read enough to translate to py. :)

                          khakhilK Offline
                          khakhilK Offline
                          khakhil
                          wrote on last edited by
                          #21

                          thanks @mrjj
                          I wll try it later
                          you saved my life :)

                          mrjjM 1 Reply Last reply
                          0
                          • khakhilK khakhil

                            thanks @mrjj
                            I wll try it later
                            you saved my life :)

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by
                            #22

                            @khakhil
                            hehe super :)
                            Good work.
                            Im complete python noob but syntax is somewhat the same :)

                            1 Reply Last reply
                            0

                            • Login

                            • Login or register to search.
                            • First post
                              Last post
                            0
                            • Categories
                            • Recent
                            • Tags
                            • Popular
                            • Users
                            • Groups
                            • Search
                            • Get Qt Extensions
                            • Unsolved