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[solved]resizing vertical header

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  • P Offline
    P Offline
    p91paul
    wrote on last edited by
    #5

    sorry, corrected (I hope :D)

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    • EddyE Offline
      EddyE Offline
      Eddy
      wrote on last edited by
      #6

      "The frozen column example":http://doc.qt.nokia.com/latest/itemviews-frozencolumn.html is not exactly what you want, but the same techniques can be used here.

      There are also 2 QTables that need to be in sync with each orther.

      Qt Certified Specialist
      www.edalsolutions.be

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      • G Offline
        G Offline
        giesbert
        wrote on last edited by
        #7

        You can try "QTableView::setColumnWidth":http://doc.qt.nokia.com/4.7/qtableview.html#setColumnWidth and set the corresponding width.

        Nokia Certified Qt Specialist.
        Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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        • EddyE Offline
          EddyE Offline
          Eddy
          wrote on last edited by
          #8

          I think Paul wants something like this :
          !http://dl.dropbox.com/u/33544011/2Tables.PNG(2 tables)!

          Is that correct?

          Qt Certified Specialist
          www.edalsolutions.be

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          • P Offline
            P Offline
            p91paul
            wrote on last edited by
            #9

            yes!
            I solved now inheriting from qheaderview and using a method to set sizehint's width, and I override sizeHint() to return a Qsize with parent's height and just set width. I consider this an ugly fix, but it works.

            what's your solution (probably better)?

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            • EddyE Offline
              EddyE Offline
              Eddy
              wrote on last edited by
              #10

              I didn't have a solution 13 minutes ago. I was just testing some things for which a made a ui.

              I don't know if it's better, but I didn't need to subclass :
              in the constructor of the form/mainwindow where you use the 3 tables :

              @ qDebug() << ui->tableWidget->verticalHeader()->sizeHint().width(); //get width of VHeader
              qDebug() <<ui->tableWidget->columnWidth(0);//get width of first column

              int HeaderWidth2 = ui->tableWidget->verticalHeader()->sizeHint().width() + ui->tableWidget->columnWidth(0);
              
              ui->tableWidget_2->verticalHeader()->setFixedWidth(HeaderWidth2);//set width of second VHeader@
              

              This doen't take in to account that the widths could be changed afterwards. In that case we will need some signals and slots.

              Anyway I hope it helps in some way.

              Qt Certified Specialist
              www.edalsolutions.be

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              • P Offline
                P Offline
                p91paul
                wrote on last edited by
                #11

                Well, your solution is better because you haven't subclassed, but it requires the same workaround when resizing: when I resize the header (with signal/slot stuff), in my and your solution the first column ("one" in your example) is not pushed to the right.
                instead, the header covers the column.

                As an ugly fix, I have to do something like
                @ int colw=ui->tblTotals->columnWidth(0);
                ui->tblTotals->setColumnWidth(0,0);
                ui->tblTotals->setColumnWidth(0,colw);@

                and the table is repainted correctly.
                thanks anyway.

                Paolo

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                • EddyE Offline
                  EddyE Offline
                  Eddy
                  wrote on last edited by
                  #12

                  I understand now what you mean about the column resizing thing.

                  Glad it is working!

                  Have Qt fun!

                  Qt Certified Specialist
                  www.edalsolutions.be

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                  • A Offline
                    A Offline
                    alexisdm
                    wrote on last edited by
                    #13

                    I think you have to call the slot QTableView::updateGeometries() after resizing the header.
                    Because that slot is protected, you have to call it through QMetaObject::invokeMethod.
                    Assuming the 2 tables are named ui->tblHours and ui->tblTotals:
                    @// In the constructor
                    ...
                    // The real column resizing is done asynchronously,
                    // so you have to delay the slot with Qt::QueuedConnection
                    connect(ui->tblHours->horizontalHeader(), SIGNAL(sectionResized(int,int,int)),
                    SLOT(resizeHeader()), Qt::QueuedConnection);
                    ...

                    void YourClass::resizeHeader() {
                    int width = ui->tblHours->verticalHeader()->width() +
                    ui->tblHours->columnWidth(0);
                    ui->tblTotals->verticalHeader()->setFixedWidth(width);
                    QMetaObject::invokeMethod(ui->tblTotals, "updateGeometries");
                    }@

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                    • P Offline
                      P Offline
                      p91paul
                      wrote on last edited by
                      #14

                      thanks a lot alexisdm. this worked for me. this approach has the advantage to be more clear.
                      very strange thing the QMetaObject one, it breaks everything about protected/private and so on. I think in a theorical OOP it has to be avoided, but for actual programming is very useful :D

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                      • EddyE Offline
                        EddyE Offline
                        Eddy
                        wrote on last edited by
                        #15

                        @Alexis

                        good one!

                        Qt Certified Specialist
                        www.edalsolutions.be

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