fullscreenwindow.cpp Example File

webenginewidgets/videoplayer/fullscreenwindow.cpp
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 #include "fullscreenwindow.h"

 #include "fullscreennotification.h"

 #include <QAction>
 #include <QLabel>
 #include <QWebEngineView>

 FullScreenWindow::FullScreenWindow(QWebEngineView *oldView, QWidget *parent)
     : QWidget(parent)
     , m_view(new QWebEngineView(this))
     , m_notification(new FullScreenNotification(this))
     , m_oldView(oldView)
     , m_oldGeometry(oldView->window()->geometry())
 {
     m_view->stackUnder(m_notification);

     auto exitAction = new QAction(this);
     exitAction->setShortcut(Qt::Key_Escape);
     connect(exitAction, &QAction::triggered, [this]() {
         m_view->triggerPageAction(QWebEnginePage::ExitFullScreen);
     });
     addAction(exitAction);

     m_view->setPage(m_oldView->page());
     setGeometry(m_oldGeometry);
     showFullScreen();
     m_oldView->window()->hide();
 }

 FullScreenWindow::~FullScreenWindow()
 {
     m_oldView->setPage(m_view->page());
     m_oldView->window()->setGeometry(m_oldGeometry);
     m_oldView->window()->show();
     hide();
 }

 void FullScreenWindow::resizeEvent(QResizeEvent *event)
 {
     QRect viewGeometry(QPoint(0, 0), size());
     m_view->setGeometry(viewGeometry);

     QRect notificationGeometry(QPoint(0, 0), m_notification->sizeHint());
     notificationGeometry.moveCenter(viewGeometry.center());
     m_notification->setGeometry(notificationGeometry);

     QWidget::resizeEvent(event);
 }