How to fix inconsistent window placement?

DerReisende

Hello everybody!

I am using Qt 6.8b2 (same happens with Qt 6.7.2 as well) both on Windows 11 and macOS Sonoma 14.5 and I am currently unable to fix a - for me - annoying inconsistency when trying to place a QTextEdit() in the lower left corner of a single screen:

m_logWindow = new QTextEdit();
m_logWindow->setWindowTitle("Log Output");
m_logWindow->setReadOnly(true);
m_logWindow->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
m_logWindow->setWindowFlags(Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint );
const auto size = m_logWindow->screen()->availableSize();
m_logWindow->resize(static_cast<int>(std::round(size.width() * 0.75)), 240);
m_logWindow->show();
m_logWindow->move(0, size.height() - m_logWindow->frameGeometry().height());

On Windows 11 the result is as expected:

On macOS, the same code however produces a "large" gap between the window and the macOS dock (red rectangle):

How could I achieve consistent window placement?

DerReisende

@mpergand using size() would discard the height of the bottom dock and place the window behind it.
However I found the solution to correctly calculate the position by using availableVirtualGeometry(). The returned QRect does take into account the top menu bar height and the calculation basically is now as follows:

const auto geom = logWindow->screen()->availableVirtualGeometry();
//qDebug() << "avail virtual geo: " << logWindow->screen()->availableVirtualGeometry();
logWindow->resize(static_cast<int>(std::round(geom.width() * 0.75)), 240);
logWindow->show();
logWindow->move(0, geom.height() + geom.y() - logWindow->frameGeometry().height());

This does work on both platforms.

mpergand

Hi @DerReisende

const auto size = m_logWindow->screen()->availableSize();

I think with availableSize you don't take the top menu in account.
Use instead:

m_logWindow->screen()->size();

DerReisende

@mpergand using size() would discard the height of the bottom dock and place the window behind it.
However I found the solution to correctly calculate the position by using availableVirtualGeometry(). The returned QRect does take into account the top menu bar height and the calculation basically is now as follows:

const auto geom = logWindow->screen()->availableVirtualGeometry();
//qDebug() << "avail virtual geo: " << logWindow->screen()->availableVirtualGeometry();
logWindow->resize(static_cast<int>(std::round(geom.width() * 0.75)), 240);
logWindow->show();
logWindow->move(0, geom.height() + geom.y() - logWindow->frameGeometry().height());

This does work on both platforms.