Center and Resize MainWindow: Difference between revisions

From Qt Wiki
Jump to navigation Jump to search
No edit summary
 
m (Added missing multiply (*) in dimensions calculus)
 
(4 intermediate revisions by 3 users not shown)
Line 1: Line 1:
=Center and Resize the MainWindow on the current screen=
{{LangSwitch}}
 
[[Category:HowTo]]
[[Category:snippets]]
The following method computes the final size of the window setting it so it covers the 90% of the whole screen available space, and then centers it (left-to-right flow):
The following method computes the final size of the window setting it so it covers the 90% of the whole screen available space, and then centers it (left-to-right flow):


===Categories:===
<code>
void MainWindow::centerAndResize() {
    // get the dimension available on this screen
    QSize availableSize = qApp->desktop()->availableGeometry().size();
    int width = availableSize.width();
    int height = availableSize.height();
    qDebug() << "Available dimensions " << width << "x" << height;
    width *= 0.9; // 90% of the screen size
    height *= 0.9; // 90% of the screen size
    qDebug() << "Computed dimensions " << width << "x" << height;
    QSize newSize( width, height );


* [[:Category:HowTo|HowTo]]
    setGeometry(
* [[:Category:snippets|snippets]]
        QStyle::alignedRect(
            Qt::LeftToRight,
            Qt::AlignCenter,
            newSize,
            qApp->desktop()->availableGeometry()
        )
    );
}
</code>

Latest revision as of 07:28, 5 February 2018

En Ar Bg De El Es Fa Fi Fr Hi Hu It Ja Kn Ko Ms Nl Pl Pt Ru Sq Th Tr Uk Zh

The following method computes the final size of the window setting it so it covers the 90% of the whole screen available space, and then centers it (left-to-right flow):

void MainWindow::centerAndResize() {
    // get the dimension available on this screen
    QSize availableSize = qApp->desktop()->availableGeometry().size();
    int width = availableSize.width();
    int height = availableSize.height();
    qDebug() << "Available dimensions " << width << "x" << height;
    width *= 0.9; // 90% of the screen size
    height *= 0.9; // 90% of the screen size
    qDebug() << "Computed dimensions " << width << "x" << height;
    QSize newSize( width, height );

    setGeometry(
        QStyle::alignedRect( 
            Qt::LeftToRight,
            Qt::AlignCenter,
            newSize,
            qApp->desktop()->availableGeometry()
        )
    );
}