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#include "OverlayWidget.h"
#include <QEvent>
OverlayWidget::OverlayWidget(QWidget *parent)
: QWidget(parent)
{
if (parent) {
parent->installEventFilter(this);
setGeometry(overlayGeometry());
raise();
}
}
bool OverlayWidget::event(QEvent *event)
{
if (!parent())
return QWidget::event(event);
switch (event->type()) {
case QEvent::ParentChange: {
parent()->installEventFilter(this);
setGeometry(overlayGeometry());
break;
}
case QEvent::ParentAboutToChange: {
parent()->removeEventFilter(this);
break;
}
default:
break;
}
return QWidget::event(event);
}
bool OverlayWidget::eventFilter(QObject *obj, QEvent *event)
{
switch (event->type()) {
case QEvent::Move:
case QEvent::Resize:
setGeometry(overlayGeometry());
break;
default:
break;
}
return QWidget::eventFilter(obj, event);
}
QRect OverlayWidget::overlayGeometry() const
{
QWidget *widget = parentWidget();
if (!widget)
return QRect();
return widget->rect();
}
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