diff -r 000000000000 -r 1918ee327afb examples/network/fortuneclient/client.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/examples/network/fortuneclient/client.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,218 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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 +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include +#include + +#include "client.h" + +#ifdef Q_OS_SYMBIAN +#include "sym_iap_util.h" +#endif + +//! [0] +Client::Client(QWidget *parent) + : QDialog(parent) +{ +//! [0] + hostLabel = new QLabel(tr("&Server name:")); + portLabel = new QLabel(tr("S&erver port:")); + + // find out which IP to connect to + QString ipAddress; + QList ipAddressesList = QNetworkInterface::allAddresses(); + // use the first non-localhost IPv4 address + for (int i = 0; i < ipAddressesList.size(); ++i) { + if (ipAddressesList.at(i) != QHostAddress::LocalHost && + ipAddressesList.at(i).toIPv4Address()) + ipAddress = ipAddressesList.at(i).toString(); + } + // if we did not find one, use IPv4 localhost + if (ipAddress.isEmpty()) + ipAddress = QHostAddress(QHostAddress::LocalHost).toString(); + + hostLineEdit = new QLineEdit(ipAddress); + portLineEdit = new QLineEdit; + portLineEdit->setValidator(new QIntValidator(1, 65535, this)); + + hostLabel->setBuddy(hostLineEdit); + portLabel->setBuddy(portLineEdit); + + statusLabel = new QLabel(tr("This examples requires that you run the " + "Fortune Server example as well.")); + + getFortuneButton = new QPushButton(tr("Get Fortune")); + getFortuneButton->setDefault(true); + getFortuneButton->setEnabled(false); + + quitButton = new QPushButton(tr("Quit")); + + buttonBox = new QDialogButtonBox; + buttonBox->addButton(getFortuneButton, QDialogButtonBox::ActionRole); + buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole); + +//! [1] + tcpSocket = new QTcpSocket(this); +//! [1] + + connect(hostLineEdit, SIGNAL(textChanged(const QString &)), + this, SLOT(enableGetFortuneButton())); + connect(portLineEdit, SIGNAL(textChanged(const QString &)), + this, SLOT(enableGetFortuneButton())); + connect(getFortuneButton, SIGNAL(clicked()), + this, SLOT(requestNewFortune())); + connect(quitButton, SIGNAL(clicked()), this, SLOT(close())); +//! [2] //! [3] + connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(readFortune())); +//! [2] //! [4] + connect(tcpSocket, SIGNAL(error(QAbstractSocket::SocketError)), +//! [3] + this, SLOT(displayError(QAbstractSocket::SocketError))); +//! [4] + + QGridLayout *mainLayout = new QGridLayout; + mainLayout->addWidget(hostLabel, 0, 0); + mainLayout->addWidget(hostLineEdit, 0, 1); + mainLayout->addWidget(portLabel, 1, 0); + mainLayout->addWidget(portLineEdit, 1, 1); + mainLayout->addWidget(statusLabel, 2, 0, 1, 2); + mainLayout->addWidget(buttonBox, 3, 0, 1, 2); + setLayout(mainLayout); + + setWindowTitle(tr("Fortune Client")); + portLineEdit->setFocus(); + +#ifdef Q_OS_SYMBIAN + isDefaultIapSet = false; +#endif +//! [5] +} +//! [5] + +//! [6] +void Client::requestNewFortune() +{ + getFortuneButton->setEnabled(false); +#ifdef Q_OS_SYMBIAN + if(!isDefaultIapSet) { + qt_SetDefaultIap(); + isDefaultIapSet = true; + } +#endif + blockSize = 0; + tcpSocket->abort(); +//! [7] + tcpSocket->connectToHost(hostLineEdit->text(), + portLineEdit->text().toInt()); +//! [7] +} +//! [6] + +//! [8] +void Client::readFortune() +{ +//! [9] + QDataStream in(tcpSocket); + in.setVersion(QDataStream::Qt_4_0); + + if (blockSize == 0) { + if (tcpSocket->bytesAvailable() < (int)sizeof(quint16)) + return; +//! [8] + +//! [10] + in >> blockSize; + } + + if (tcpSocket->bytesAvailable() < blockSize) + return; +//! [10] //! [11] + + QString nextFortune; + in >> nextFortune; + + if (nextFortune == currentFortune) { + QTimer::singleShot(0, this, SLOT(requestNewFortune())); + return; + } +//! [11] + +//! [12] + currentFortune = nextFortune; +//! [9] + statusLabel->setText(currentFortune); + getFortuneButton->setEnabled(true); +} +//! [12] + +//! [13] +void Client::displayError(QAbstractSocket::SocketError socketError) +{ + switch (socketError) { + case QAbstractSocket::RemoteHostClosedError: + break; + case QAbstractSocket::HostNotFoundError: + QMessageBox::information(this, tr("Fortune Client"), + tr("The host was not found. Please check the " + "host name and port settings.")); + break; + case QAbstractSocket::ConnectionRefusedError: + QMessageBox::information(this, tr("Fortune Client"), + tr("The connection was refused by the peer. " + "Make sure the fortune server is running, " + "and check that the host name and port " + "settings are correct.")); + break; + default: + QMessageBox::information(this, tr("Fortune Client"), + tr("The following error occurred: %1.") + .arg(tcpSocket->errorString())); + } + + getFortuneButton->setEnabled(true); +} +//! [13] + +void Client::enableGetFortuneButton() +{ + getFortuneButton->setEnabled(!hostLineEdit->text().isEmpty() + && !portLineEdit->text().isEmpty()); +}