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require 'Qt'
class Client < Qt::VBox
def initialize( host, port )
super()
# GUI layout
@infoText = Qt::TextView.new( self )
hb = Qt::HBox.new( self )
@inputText = Qt::LineEdit.new( hb )
send = Qt::PushButton.new( tr("Send") , hb )
close = Qt::PushButton.new( tr("Close connection") , self )
quit = Qt::PushButton.new( tr("Quit") , self )
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 = Qt::Socket.new( self )
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 )
end
slots 'closeConnection()', 'sendToServer()',
'socketReadyRead()', 'socketConnected()',
'socketConnectionClosed()', 'socketClosed()',
'socketError(int)'
def closeConnection()
@socket.close()
if @socket.state() == Qt::Socket::Closing
# We have a delayed close.
connect( @socket, SIGNAL('delayedCloseFinished()'),
SLOT('socketClosed()') )
else
# The socket is closed.
socketClosed()
end
end
def sendToServer()
# write to the server
os = Qt::TextStream.new(@socket)
os << @inputText.text() << "\n"
@inputText.setText( "" )
os.dispose()
end
def socketReadyRead()
# read from the server
while @socket.canReadLine() do
@infoText.append( @socket.readLine() )
end
end
def socketConnected()
@infoText.append( tr("Connected to server\n") )
end
def socketConnectionClosed()
@infoText.append( tr("Connection closed by the server\n") )
end
def socketClosed()
@infoText.append( tr("Connection closed\n") )
end
def socketError( e )
@infoText.append( tr("Error number %d occurred\n" % e) )
end
end
app = Qt::Application.new( ARGV )
client = Client.new( ARGV.length < 1 ? "localhost" : ARGV[0], 4242 )
app.mainWidget = client
client.show
app.exec
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