Center and Resize MainWindow: Difference between revisions

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{{Cleanup | reason=Auto-imported from ExpressionEngine.}}
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[[Category:HowTo]]
[[Category:HowTo]]
[[Category:snippets]]
[[Category:snippets]]
= Center and Resize the MainWindow on the current screen =
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):


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


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

Latest revision as of 07:28, 5 February 2018

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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()
        )
    );
}