How to properly resize a costum QTableView with a costum QHeaderView

[FlyingHubert]

Hi,

I've wrote some code to generate a costum TableView. It displays data from a costum TableModel which works fine. Because the data is often just "yes" or "no" I wanted to create a Costum HeaderView with vertical Text in it. That worked well! But now I want the view to resize the columns perperly but it doesn't work at all.

I tried many different variants with all the (virtual) methods given by QHeaderView and QTableView. But the TableView doesn't resize properly. I want the columns with "yes" and "no" to be as small as possible but they are way to big. And I also want the adress columns to be at the proper size for their content.

My question now is:
Which methods do I have to call/overwrite to resize the TableView to its contents?

The only real thing I coded and that worked was:

void MyHeader::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const
{
    const int grosse = 12;
    painter->setRenderHint(QPainter::Antialiasing);

    QString title = model()->headerData(logicalIndex,Qt::Horizontal,Qt::DisplayRole).toString();

    QLinearGradient gradient(rect.topLeft(), rect.bottomRight());
    gradient.setColorAt(0, Qt::gray);
    gradient.setColorAt(1, Qt::lightGray);
    painter->fillRect(rect, gradient);
    painter->drawRect(rect);


    QFont f("Cambria Math",grosse);
    f.setBold(true);
    painter->setFont(f);

    painter->translate(rect.x() + rect.width()/2-grosse/2, rect.y());
    painter->rotate(90);
    painter->drawText(0,0, title);
}

QSize MyHeader::sizeHint() const
{
    int height = 350;
    int width  = 20;

    return QSize(width,height);
}

[Ratzz]

@FlyingHubert
May be
http://doc.qt.io/qt-5/qtableview.html#resizeColumnsToContents
http://doc.qt.io/qt-5/qtableview.html#resizeRowsToContents
and for Header tableView->horizontalHeader()->setResizeMode(QHeaderView::ResizeToContents);

[FlyingHubert]

@FlyingHubert

Hmm okay, when i code it like this it does not work. Is that what you meant ?

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    MyTableView *view = new MyTableView(this);
    MyHeader* header = new MyHeader(view);
    MyXmlReader* reader = new MyXmlReader;
    MyModel* model = new MyModel(reader->data());

    view->setModel(model);
    view->setHorizontalHeader(header);

    view->resizeColumnsToContents();
    view->resizeRowsToContents();
    view->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);

    setCentralWidget(view);

}

[FlyingHubert]

Hi,

I found my problem.
I forgot the reimplement the Qt::SizeHintRole for the "QAbstractTableModel::headerData(...)" method. therefore the QHeaderView didn't know which size each section had and made wrong assumptions!

Thanks anyway for th reading of the post.

Greetings FlyingHubert