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MDI: Don't let windows escape its parent

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This commit is contained in:
Sergio Martins
2021-02-13 16:19:05 +00:00
parent 4379e7c544
commit 18d405bdfb
1 changed files with 11 additions and 1 deletions
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12
src/private/DragController.cpp
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@@ -415,9 +415,19 @@ bool StateInternalMDIDragging::handleMouseMove(QPoint globalPos)
return false;
}
const QSize parentSize = frame->QWidgetAdapter::parentWidget()->size();
const QPoint oldPos = frame->mapToGlobal(QPoint(0, 0));
const QPoint delta = globalPos - oldPos;
frame->QWidgetAdapter::move(frame->pos() + delta - q->m_offset);
QPoint newLocalPos = frame->pos() + delta - q->m_offset;
// Let's not allow the MDI window to go outside of its parent
newLocalPos.setX(qMax(0, newLocalPos.x()));
newLocalPos.setY(qMax(0, newLocalPos.y()));
newLocalPos.setX(qMin(newLocalPos.x(), parentSize.width() - frame->width()));
newLocalPos.setY(qMin(newLocalPos.y(), parentSize.height() - frame->height()));
frame->QWidgetAdapter::move(newLocalPos);
return false;