qt5base-lts/examples/ipc/localfortuneclient/client.cpp
Friedemann Kleint 87274e272d QtBase examples: Remove Maemo/Symbian-specific code.
- Maemo/Symbian are no longer supported and QWidget-based examples
  are no longer supposed to run on mobile platforms, so, remove any
  Maemo/Symbian or mobile-specific code from source files and
  profiles.
- Remove Maemo/Symbian vibration examples.
- Change Q_WS_MAC/WIN to Q_OS_MAC/WIN where appropriate.

Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>

Change-Id: I488a0adadb98934567aa6416206a80465c9c3a81
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
2011-10-18 15:47:49 +02:00

154 lines
5.5 KiB
C++

/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
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** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
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****************************************************************************/
#include <QtWidgets>
#include <QtNetwork>
#include "client.h"
Client::Client(QWidget *parent)
: QDialog(parent)
{
hostLabel = new QLabel(tr("&Server name:"));
hostLineEdit = new QLineEdit("fortune");
hostLabel->setBuddy(hostLineEdit);
statusLabel = new QLabel(tr("This examples requires that you run the "
"Fortune Server example as well."));
statusLabel->setWordWrap(true);
getFortuneButton = new QPushButton(tr("Get Fortune"));
getFortuneButton->setDefault(true);
quitButton = new QPushButton(tr("Quit"));
buttonBox = new QDialogButtonBox;
buttonBox->addButton(getFortuneButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
socket = new QLocalSocket(this);
connect(hostLineEdit, SIGNAL(textChanged(QString)),
this, SLOT(enableGetFortuneButton()));
connect(getFortuneButton, SIGNAL(clicked()),
this, SLOT(requestNewFortune()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
connect(socket, SIGNAL(readyRead()), this, SLOT(readFortune()));
connect(socket, SIGNAL(error(QLocalSocket::LocalSocketError)),
this, SLOT(displayError(QLocalSocket::LocalSocketError)));
QGridLayout *mainLayout = new QGridLayout;
mainLayout->addWidget(hostLabel, 0, 0);
mainLayout->addWidget(hostLineEdit, 0, 1);
mainLayout->addWidget(statusLabel, 2, 0, 1, 2);
mainLayout->addWidget(buttonBox, 3, 0, 1, 2);
setLayout(mainLayout);
setWindowTitle(tr("Fortune Client"));
hostLineEdit->setFocus();
}
void Client::requestNewFortune()
{
getFortuneButton->setEnabled(false);
blockSize = 0;
socket->abort();
socket->connectToServer(hostLineEdit->text());
}
void Client::readFortune()
{
QDataStream in(socket);
in.setVersion(QDataStream::Qt_4_0);
if (blockSize == 0) {
if (socket->bytesAvailable() < (int)sizeof(quint16))
return;
in >> blockSize;
}
if (in.atEnd())
return;
QString nextFortune;
in >> nextFortune;
if (nextFortune == currentFortune) {
QTimer::singleShot(0, this, SLOT(requestNewFortune()));
return;
}
currentFortune = nextFortune;
statusLabel->setText(currentFortune);
getFortuneButton->setEnabled(true);
}
void Client::displayError(QLocalSocket::LocalSocketError socketError)
{
switch (socketError) {
case QLocalSocket::ServerNotFoundError:
QMessageBox::information(this, tr("Fortune Client"),
tr("The host was not found. Please check the "
"host name and port settings."));
break;
case QLocalSocket::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;
case QLocalSocket::PeerClosedError:
break;
default:
QMessageBox::information(this, tr("Fortune Client"),
tr("The following error occurred: %1.")
.arg(socket->errorString()));
}
getFortuneButton->setEnabled(true);
}
void Client::enableGetFortuneButton()
{
getFortuneButton->setEnabled(!hostLineEdit->text().isEmpty());
}