qt-everywhere-src-5.14.1/qtwebengine/examples/webenginewidgets/simplebrowser/webpopupwindow.cpp

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#include "webpage.h"
#include "webpopupwindow.h"
#include "webview.h"
#include <QAction>
#include <QIcon>
#include <QLineEdit>
#include <QVBoxLayout>
#include <QWindow>

WebPopupWindow::WebPopupWindow(QWebEngineProfile *profile)
    : m_urlLineEdit(new QLineEdit(this))
    , m_favAction(new QAction(this))
    , m_view(new WebView(this))
{
    setAttribute(Qt::WA_DeleteOnClose);
    setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->setContentsMargins(0, 0, 0, 0);
    setLayout(layout);
    layout->addWidget(m_urlLineEdit);
    layout->addWidget(m_view);

    m_view->setPage(new WebPage(profile, m_view));
    m_view->setFocus();

    m_urlLineEdit->setReadOnly(true);
    m_urlLineEdit->addAction(m_favAction, QLineEdit::LeadingPosition);

    connect(m_view, &WebView::titleChanged, this, &QWidget::setWindowTitle);
    connect(m_view, &WebView::urlChanged, [this](const QUrl &url) {
        m_urlLineEdit->setText(url.toDisplayString());
    });
    connect(m_view, &WebView::favIconChanged, m_favAction, &QAction::setIcon);
    connect(m_view->page(), &WebPage::geometryChangeRequested, this, &WebPopupWindow::handleGeometryChangeRequested);
    connect(m_view->page(), &WebPage::windowCloseRequested, this, &QWidget::close);
}

WebView *WebPopupWindow::view() const
{
    return m_view;
}

void WebPopupWindow::handleGeometryChangeRequested(const QRect &newGeometry)
{
    if (QWindow *window = windowHandle())
        setGeometry(newGeometry.marginsRemoved(window->frameMargins()));
    show();
    m_view->setFocus();
}