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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include <qsocket.h>
#include <qapplication.h>
#include <qvbox.h>
#include <qhbox.h>
#include <qtextview.h>
#include <qlineedit.h>
#include <qlabel.h>
#include <qpushbutton.h>
#include <qtextstream.h>
class Client : public QVBox
{
Q_OBJECT
public:
Client( const QString &host, Q_UINT16 port )
{
// GUI layout
infoText = new QTextView( this );
QHBox *hb = new QHBox( this );
inputText = new QLineEdit( hb );
QPushButton *send = new QPushButton( tr("Send") , hb );
QPushButton *close = new QPushButton( tr("Close connection") , this );
QPushButton *quit = new QPushButton( tr("Quit") , this );
connect( send, SIGNAL(clicked()), SLOT(sendToServer()) );
connect( close, SIGNAL(clicked()), SLOT(closeConnection()) );
connect( quit, SIGNAL(clicked()), qApp, SLOT(quit()) );
// create the socket and connect various of its signals
socket = new QSocket( this );
connect( socket, SIGNAL(connected()),
SLOT(socketConnected()) );
connect( socket, SIGNAL(connectionClosed()),
SLOT(socketConnectionClosed()) );
connect( socket, SIGNAL(readyRead()),
SLOT(socketReadyRead()) );
connect( socket, SIGNAL(error(int)),
SLOT(socketError(int)) );
// connect to the server
infoText->append( tr("Trying to connect to the server\n") );
socket->connectToHost( host, port );
}
~Client()
{
}
private slots:
void closeConnection()
{
socket->close();
if ( socket->state() == QSocket::Closing ) {
// We have a delayed close.
connect( socket, SIGNAL(delayedCloseFinished()),
SLOT(socketClosed()) );
} else {
// The socket is closed.
socketClosed();
}
}
void sendToServer()
{
// write to the server
QTextStream os(socket);
os << inputText->text() << "\n";
inputText->setText( "" );
}
void socketReadyRead()
{
// read from the server
while ( socket->canReadLine() ) {
infoText->append( socket->readLine() );
}
}
void socketConnected()
{
infoText->append( tr("Connected to server\n") );
}
void socketConnectionClosed()
{
infoText->append( tr("Connection closed by the server\n") );
}
void socketClosed()
{
infoText->append( tr("Connection closed\n") );
}
void socketError( int e )
{
infoText->append( tr("Error number %1 occurred\n").arg(e) );
}
private:
QSocket *socket;
QTextView *infoText;
QLineEdit *inputText;
};
int main( int argc, char** argv )
{
QApplication app( argc, argv );
Client client( argc<2 ? "localhost" : argv[1], 4242 );
app.setMainWidget( &client );
client.show();
return app.exec();
}
#include "client.moc"
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