- Qt 5.5
- Qt WebEngine Widgets
- WebEngine Tab Browser Example
- webview.h Example File
- Qt 5.5.1 Reference Documentation

# webview.h Example File

browser/webview.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL$
    ** Commercial License Usage
    ** Licensees holding valid commercial Qt licenses may use this file in
    ** accordance with the commercial license agreement provided with the
    ** Software or, alternatively, in accordance with the terms contained in
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    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 2.1 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.LGPL included in the
    ** packaging of this file. Please review the following information to
    ** ensure the GNU Lesser General Public License version 2.1 requirements
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    ** rights. These rights are described in The Qt Company LGPL Exception
    ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
    **
    ** GNU General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU
    ** General Public License version 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Please review the following information to
    ** ensure the GNU General Public License version 3.0 requirements will be
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    ****************************************************************************/

    #ifndef WEBVIEW_H
    #define WEBVIEW_H

    #include <QIcon>
    #include <QWebEngineView>

    class QAuthenticator;
    class QMouseEvent;
    class QNetworkProxy;
    class QNetworkReply;
    class QSslError;

    class BrowserMainWindow;
    class WebPage : public QWebEnginePage {
        Q_OBJECT

    signals:
        void loadingUrl(const QUrl &url);

    public:
        WebPage(QWebEngineProfile *profile, QObject *parent = 0);
        BrowserMainWindow *mainWindow();

    protected:
        bool acceptNavigationRequest(const QUrl &url, NavigationType type, bool isMainFrame);
        QWebEnginePage *createWindow(QWebEnginePage::WebWindowType type);
    #if !defined(QT_NO_UITOOLS)
        QObject *createPlugin(const QString &classId, const QUrl &url, const QStringList &paramNames, const QStringList &paramValues);
    #endif
        virtual bool certificateError(const QWebEngineCertificateError &error) Q_DECL_OVERRIDE;

    private slots:
    #if defined(QWEBENGINEPAGE_UNSUPPORTEDCONTENT)
        void handleUnsupportedContent(QNetworkReply *reply);
    #endif
        void authenticationRequired(const QUrl &requestUrl, QAuthenticator *auth);
        void proxyAuthenticationRequired(const QUrl &requestUrl, QAuthenticator *auth, const QString &proxyHost);

    private:
        friend class WebView;

        // set the webview mousepressedevent
        Qt::KeyboardModifiers m_keyboardModifiers;
        Qt::MouseButtons m_pressedButtons;
        bool m_openInNewTab;
        QUrl m_loadingUrl;
    };

    class WebView : public QWebEngineView {
        Q_OBJECT

    public:
        WebView(QWidget *parent = 0);
        WebPage *webPage() const { return m_page; }
        void setPage(WebPage *page);

        void loadUrl(const QUrl &url);
        QUrl url() const;
        QIcon icon() const;

        QString lastStatusBarText() const;
        inline int progress() const { return m_progress; }

    protected:
        void mousePressEvent(QMouseEvent *event);
        void mouseReleaseEvent(QMouseEvent *event);
        void contextMenuEvent(QContextMenuEvent *event);
        void wheelEvent(QWheelEvent *event);

    signals:
        void iconChanged();

    private slots:
        void setProgress(int progress);
        void loadFinished(bool success);
        void setStatusBarText(const QString &string);
        void openLinkInNewTab();
        void onFeaturePermissionRequested(const QUrl &securityOrigin, QWebEnginePage::Feature);
        void onIconUrlChanged(const QUrl &url);
        void iconLoaded();

    private:
        QString m_statusBarText;
        QUrl m_initialUrl;
        int m_progress;
        WebPage *m_page;
        QIcon m_icon;
        QNetworkReply *m_iconReply;
    };

    #endif