qt嵌入cef示例和交互

/**************************************************************************** ** ** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com> ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtWebChannel module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "websockettransport.h" #include <QJsonDocument> #include <QJsonObject> #include <QDebug> #include <QtWebSockets/QWebSocket> /*! \brief QWebChannelAbstractSocket implementation that uses a QWebSocket internally. The transport delegates all messages received over the QWebSocket over its textMessageReceived signal. Analogously, all calls to sendTextMessage will be send over the QWebSocket to the remote client. */ QT_BEGIN_NAMESPACE /*! Construct the transport object and wrap the given socket. The socket is also set as the parent of the transport object. */ WebSocketTransport::WebSocketTransport(QWebSocket *socket) : QWebChannelAbstractTransport(socket) , m_socket(socket) { connect(socket, &QWebSocket::textMessageReceived, this, &WebSocketTransport::textMessageReceived); connect(socket, &QWebSocket::disconnected, this, &WebSocketTransport::deleteLater); } /*! Destroys the WebSocketTransport. */ WebSocketTransport::~WebSocketTransport() { m_socket->deleteLater(); } /*! Serialize the JSON message and send it as a text message via the WebSocket to the client. */ void WebSocketTransport::sendMessage(const QJsonObject &message) { QJsonDocument doc(message); m_socket->sendTextMessage(QString::fromUtf8(doc.toJson(QJsonDocument::Compact))); } /*! Deserialize the stringified JSON messageData and emit messageReceived. */ void WebSocketTransport::textMessageReceived(const QString &messageData) { QJsonParseError error; QJsonDocument message = QJsonDocument::fromJson(messageData.toUtf8(), &error); if (error.error) { qWarning() << "Failed to parse text message as JSON object:" << messageData << "Error is:" << error.errorString(); return; } else if (!message.isObject()) { qWarning() << "Received JSON message that is not an object: " << messageData; return; } emit messageReceived(message.object(), this); } QT_END_NAMESPACE