Long live Qt 4.5!

4 files changed, 339 insertions, 0 deletions

diff --git a/examples/network/fortuneclient/client.cpp b/examples/network/fortuneclient/client.cpp
new file mode 100644
index 0000000..4d65828
--- /dev/null
+++ b/examples/network/fortuneclient/client.cpp
@@ -0,0 +1,191 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtNetwork>
+
+#include "client.h"
+
+//! [0]
+Client::Client(QWidget *parent)
+    : QDialog(parent)
+{
+//! [0]
+    hostLabel = new QLabel(tr("&Server name:"));
+    portLabel = new QLabel(tr("S&erver port:"));
+
+    hostLineEdit = new QLineEdit("Localhost");
+    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();
+//! [5]
+}
+//! [5]
+
+//! [6]
+void Client::requestNewFortune()
+{
+    getFortuneButton->setEnabled(false);
+    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());
+}
diff --git a/examples/network/fortuneclient/client.h b/examples/network/fortuneclient/client.h
new file mode 100644
index 0000000..b9fe7b1
--- /dev/null
+++ b/examples/network/fortuneclient/client.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CLIENT_H
+#define CLIENT_H
+
+#include <QDialog>
+#include <QTcpSocket>
+
+QT_BEGIN_NAMESPACE
+class QDialogButtonBox;
+class QLabel;
+class QLineEdit;
+class QPushButton;
+class QTcpSocket;
+QT_END_NAMESPACE
+
+//! [0]
+class Client : public QDialog
+{
+    Q_OBJECT
+
+public:
+    Client(QWidget *parent = 0);
+
+private slots:
+    void requestNewFortune();
+    void readFortune();
+    void displayError(QAbstractSocket::SocketError socketError);
+    void enableGetFortuneButton();
+
+private:
+    QLabel *hostLabel;
+    QLabel *portLabel;
+    QLineEdit *hostLineEdit;
+    QLineEdit *portLineEdit;
+    QLabel *statusLabel;
+    QPushButton *getFortuneButton;
+    QPushButton *quitButton;
+    QDialogButtonBox *buttonBox;
+
+    QTcpSocket *tcpSocket;
+    QString currentFortune;
+    quint16 blockSize;
+};
+//! [0]
+
+#endif
diff --git a/examples/network/fortuneclient/fortuneclient.pro b/examples/network/fortuneclient/fortuneclient.pro
new file mode 100644
index 0000000..1c7b0a8
--- /dev/null
+++ b/examples/network/fortuneclient/fortuneclient.pro
@@ -0,0 +1,10 @@
+HEADERS       = client.h
+SOURCES       = client.cpp \
+                main.cpp
+QT           += network
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/network/fortuneclient
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS fortuneclient.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/network/fortuneclient
+INSTALLS += target sources
diff --git a/examples/network/fortuneclient/main.cpp b/examples/network/fortuneclient/main.cpp
new file mode 100644
index 0000000..11dcbc6
--- /dev/null
+++ b/examples/network/fortuneclient/main.cpp
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "client.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    Client client;
+    client.show();
+    return client.exec();
+}