CODEWITHSUNDEEP
qtlayout
zarzych
zarzych

Reputation: 981

Layout with two tableviews problem

I have a widget containing two QTableViews in a horizontal layout. I would like them to resize to their preferred size (so that they don't have to show autoscrolls). I also don't want them to grow more than their preferred size and leave empty space to the right if there is any left. It should look like this:

alt text

I've tried to achieve it with a spacer on the right, but the views don't grow because of autoscrolls.

Can you propose any solution?

Upvotes: 1

Views: 1829

Answers (2)

Giuseppe Cardone
Giuseppe Cardone

Reputation: 5393

If I understood your question, you want the two QTableViews to resize to their PreferredSize if there is enough space (but no more than thier PreferredSize) and to shrink if there is not enough space. If there is too much space, it should be left empty. Here's an example that does it:

#include <QtGui>

int main(int argc, char **argv) {

    QApplication app(argc, argv);
    QMainWindow w;
    QHBoxLayout *hbox = new QHBoxLayout;
    QWidget *centralw = new QWidget;
    centralw->setLayout(hbox);
    w.setCentralWidget(centralw);

    QTableView *t1 = new QTableView;
    QTableView *t2 = new QTableView;
    // Version one: the preferred size is the maximum size
    // t1->setSizePolicy(QSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred));
    // t2->setSizePolicy(QSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred));
    // Version two: the preferred size is the only accepted size
    // if you want the widgets not to change their size, change the two previous lines with
    // t1->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
    // t2->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
    // hbox->addWidget(t1);
    // hbox->addWidget(t2);
    // add a stretch that will fill empty space
    // hbox->addStretch(1);

    // Version three: tables have a minimum and maximum width. They can be shrunk
    // but they try to expand to take the maximum available space up to their maximum
    // width.
    t1->setMinimumWidth(150);
    t1->setMaximumWidth(400);
    t2->setMinimumWidth(100);
    t2->setMaximumWidth(200);
    t1->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding));
    t2->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding));
    hbox->addWidget(t1);
    hbox->addWidget(t2);
    hbox->setStretchFactor(t1, 1);
    hbox->setStretchFactor(t2, 1); // tableviews have the same stretch factor
    hbox->addStretch(0);  // lowest stretch factor

    w.show();

    return app.exec();
}

Upvotes: 1

Andrew
Andrew

Reputation: 24866

You can reimplement parent's widget resizeEvent function and not to use a layout at all. So when the parent widget is resized you can manually set the sizes of your tables.

The other way you can try is to reimplement sizeHint or/and minimumSizeHint functions of the QTableView so they return a good for you size.

Also take a look at QSizePolicy - it may be usefull

Upvotes: 1

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