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author | axis <qt-info@nokia.com> | 2009-04-24 11:34:15 (GMT) |
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committer | axis <qt-info@nokia.com> | 2009-04-24 11:34:15 (GMT) |
commit | 8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76 (patch) | |
tree | a17e1a767a89542ab59907462206d7dcf2e504b2 /examples/network/blockingfortuneclient | |
download | Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.zip Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.tar.gz Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.tar.bz2 |
Long live Qt for S60!
Diffstat (limited to 'examples/network/blockingfortuneclient')
6 files changed, 517 insertions, 0 deletions
diff --git a/examples/network/blockingfortuneclient/blockingclient.cpp b/examples/network/blockingfortuneclient/blockingclient.cpp new file mode 100644 index 0000000..207ff5f --- /dev/null +++ b/examples/network/blockingfortuneclient/blockingclient.cpp @@ -0,0 +1,154 @@ +/**************************************************************************** +** +** 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 "blockingclient.h" + +BlockingClient::BlockingClient(QWidget *parent) + : QDialog(parent) +{ + 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); + + 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())); +//! [0] + connect(&thread, SIGNAL(newFortune(const QString &)), + this, SLOT(showFortune(const QString &))); +//! [0] //! [1] + connect(&thread, SIGNAL(error(int, const QString &)), + this, SLOT(displayError(int, const QString &))); +//! [1] + + 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("Blocking Fortune Client")); + portLineEdit->setFocus(); +} + +//! [2] +void BlockingClient::requestNewFortune() +{ + getFortuneButton->setEnabled(false); + thread.requestNewFortune(hostLineEdit->text(), + portLineEdit->text().toInt()); +} +//! [2] + +//! [3] +void BlockingClient::showFortune(const QString &nextFortune) +{ + if (nextFortune == currentFortune) { + requestNewFortune(); + return; + } +//! [3] + +//! [4] + currentFortune = nextFortune; + statusLabel->setText(currentFortune); + getFortuneButton->setEnabled(true); +} +//! [4] + +void BlockingClient::displayError(int socketError, const QString &message) +{ + switch (socketError) { + case QAbstractSocket::HostNotFoundError: + QMessageBox::information(this, tr("Blocking Fortune Client"), + tr("The host was not found. Please check the " + "host and port settings.")); + break; + case QAbstractSocket::ConnectionRefusedError: + QMessageBox::information(this, tr("Blocking 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("Blocking Fortune Client"), + tr("The following error occurred: %1.") + .arg(message)); + } + + getFortuneButton->setEnabled(true); +} + +void BlockingClient::enableGetFortuneButton() +{ + getFortuneButton->setEnabled(!hostLineEdit->text().isEmpty() + && !portLineEdit->text().isEmpty()); +} diff --git a/examples/network/blockingfortuneclient/blockingclient.h b/examples/network/blockingfortuneclient/blockingclient.h new file mode 100644 index 0000000..2bc0b80 --- /dev/null +++ b/examples/network/blockingfortuneclient/blockingclient.h @@ -0,0 +1,85 @@ +/**************************************************************************** +** +** 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 BLOCKINGCLIENT_H +#define BLOCKINGCLIENT_H + +#include <QDialog> + +#include "fortunethread.h" + +QT_BEGIN_NAMESPACE +class QDialogButtonBox; +class QLabel; +class QLineEdit; +class QPushButton; +QT_END_NAMESPACE + +//! [0] +class BlockingClient : public QDialog +{ + Q_OBJECT + +public: + BlockingClient(QWidget *parent = 0); + +private slots: + void requestNewFortune(); + void showFortune(const QString &fortune); + void displayError(int socketError, const QString &message); + void enableGetFortuneButton(); + +private: + QLabel *hostLabel; + QLabel *portLabel; + QLineEdit *hostLineEdit; + QLineEdit *portLineEdit; + QLabel *statusLabel; + QPushButton *getFortuneButton; + QPushButton *quitButton; + QDialogButtonBox *buttonBox; + + FortuneThread thread; + QString currentFortune; +}; +//! [0] + +#endif diff --git a/examples/network/blockingfortuneclient/blockingfortuneclient.pro b/examples/network/blockingfortuneclient/blockingfortuneclient.pro new file mode 100644 index 0000000..96fbc1f --- /dev/null +++ b/examples/network/blockingfortuneclient/blockingfortuneclient.pro @@ -0,0 +1,14 @@ +HEADERS = blockingclient.h \ + fortunethread.h +SOURCES = blockingclient.cpp \ + main.cpp \ + fortunethread.cpp +QT += network + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/network/blockingfortuneclient +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS blockingfortuneclient.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/network/blockingfortuneclient +INSTALLS += target sources + +include($$QT_SOURCE_TREE/examples/examplebase.pri) diff --git a/examples/network/blockingfortuneclient/fortunethread.cpp b/examples/network/blockingfortuneclient/fortunethread.cpp new file mode 100644 index 0000000..af1c612 --- /dev/null +++ b/examples/network/blockingfortuneclient/fortunethread.cpp @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** 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 <QtNetwork> + +#include "fortunethread.h" + +FortuneThread::FortuneThread(QObject *parent) + : QThread(parent), quit(false) +{ +} + +//! [0] +FortuneThread::~FortuneThread() +{ + mutex.lock(); + quit = true; + cond.wakeOne(); + mutex.unlock(); + wait(); +} +//! [0] + +//! [1] //! [2] +void FortuneThread::requestNewFortune(const QString &hostName, quint16 port) +{ +//! [1] + QMutexLocker locker(&mutex); + this->hostName = hostName; + this->port = port; +//! [3] + if (!isRunning()) + start(); + else + cond.wakeOne(); +} +//! [2] //! [3] + +//! [4] +void FortuneThread::run() +{ + mutex.lock(); +//! [4] //! [5] + QString serverName = hostName; + quint16 serverPort = port; + mutex.unlock(); +//! [5] + +//! [6] + while (!quit) { +//! [7] + const int Timeout = 5 * 1000; + + QTcpSocket socket; + socket.connectToHost(serverName, serverPort); +//! [6] //! [8] + + if (!socket.waitForConnected(Timeout)) { + emit error(socket.error(), socket.errorString()); + return; + } +//! [8] //! [9] + + while (socket.bytesAvailable() < (int)sizeof(quint16)) { + if (!socket.waitForReadyRead(Timeout)) { + emit error(socket.error(), socket.errorString()); + return; + } +//! [9] //! [10] + } +//! [10] //! [11] + + quint16 blockSize; + QDataStream in(&socket); + in.setVersion(QDataStream::Qt_4_0); + in >> blockSize; +//! [11] //! [12] + + while (socket.bytesAvailable() < blockSize) { + if (!socket.waitForReadyRead(Timeout)) { + emit error(socket.error(), socket.errorString()); + return; + } +//! [12] //! [13] + } +//! [13] //! [14] + + mutex.lock(); + QString fortune; + in >> fortune; + emit newFortune(fortune); +//! [7] //! [14] //! [15] + + cond.wait(&mutex); + serverName = hostName; + serverPort = port; + mutex.unlock(); + } +//! [15] +} diff --git a/examples/network/blockingfortuneclient/fortunethread.h b/examples/network/blockingfortuneclient/fortunethread.h new file mode 100644 index 0000000..c2fbe6f --- /dev/null +++ b/examples/network/blockingfortuneclient/fortunethread.h @@ -0,0 +1,74 @@ +/**************************************************************************** +** +** 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 FORTUNETHREAD_H +#define FORTUNETHREAD_H + +#include <QThread> +#include <QMutex> +#include <QWaitCondition> + +//! [0] +class FortuneThread : public QThread +{ + Q_OBJECT + +public: + FortuneThread(QObject *parent = 0); + ~FortuneThread(); + + void requestNewFortune(const QString &hostName, quint16 port); + void run(); + +signals: + void newFortune(const QString &fortune); + void error(int socketError, const QString &message); + +private: + QString hostName; + quint16 port; + QMutex mutex; + QWaitCondition cond; + bool quit; +}; +//! [0] + +#endif diff --git a/examples/network/blockingfortuneclient/main.cpp b/examples/network/blockingfortuneclient/main.cpp new file mode 100644 index 0000000..98982c1 --- /dev/null +++ b/examples/network/blockingfortuneclient/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 "blockingclient.h" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + BlockingClient client; + client.show(); + return client.exec(); +} |