73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
#include "OverlayWidget.h"
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#include <QEvent>
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OverlayWidget::OverlayWidget(QWidget *parent)
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: QWidget(parent)
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{
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if (parent) {
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parent->installEventFilter(this);
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setGeometry(overlayGeometry());
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raise();
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}
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}
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bool
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OverlayWidget::event(QEvent *event)
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{
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if (!parent())
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return QWidget::event(event);
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switch (event->type()) {
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case QEvent::ParentChange: {
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parent()->installEventFilter(this);
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setGeometry(overlayGeometry());
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break;
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}
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case QEvent::ParentAboutToChange: {
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parent()->removeEventFilter(this);
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break;
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}
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default:
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break;
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}
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return QWidget::event(event);
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}
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bool
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OverlayWidget::eventFilter(QObject *obj, QEvent *event)
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{
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switch (event->type()) {
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case QEvent::Move:
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case QEvent::Resize:
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setGeometry(overlayGeometry());
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break;
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default:
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break;
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}
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return QWidget::eventFilter(obj, event);
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}
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QRect
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OverlayWidget::overlayGeometry() const
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{
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QWidget *widget = parentWidget();
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if (!widget)
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return QRect();
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return widget->rect();
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}
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void
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OverlayWidget::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event);
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QStyleOption opt;
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opt.init(this);
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QPainter p(this);
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style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
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}
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