mirror of
https://github.com/crystalidea/qt6windows7.git
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120 lines
4.1 KiB
C++
120 lines
4.1 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "server.h"
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#include <QDialogButtonBox>
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#include <QGuiApplication>
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#include <QHBoxLayout>
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#include <QLabel>
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#include <QLineEdit>
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#include <QLocalSocket>
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#include <QMessageBox>
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#include <QPushButton>
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#include <QRandomGenerator>
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using namespace Qt::StringLiterals;
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static const QString idleStateText = QObject::tr("Press \"Listen\" to start the server");
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Server::Server(QWidget *parent)
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: QDialog(parent),
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server(new QLocalServer(this)),
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hostLineEdit(new QLineEdit(u"fortune"_s)),
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statusLabel(new QLabel(idleStateText)),
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listenButton(new QPushButton(tr("Listen"))),
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stopListeningButton(new QPushButton(tr("Stop Listening")))
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{
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setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
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statusLabel->setWordWrap(true);
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stopListeningButton->setDisabled(true);
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fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
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<< tr("You've got to think about tomorrow.")
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<< tr("You will be surprised by a loud noise.")
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<< tr("You will feel hungry again in another hour.")
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<< tr("You might have mail.")
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<< tr("You cannot kill time without injuring eternity.")
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<< tr("Computers are not intelligent. They only think they are.");
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QLabel *hostLabel = new QLabel(tr("Server name:"));
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connect(server, &QLocalServer::newConnection, this, &Server::sendFortune);
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connect(hostLineEdit, &QLineEdit::textChanged, this, &Server::toggleListenButton);
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connect(listenButton, &QPushButton::clicked, this, &Server::listenToServer);
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connect(stopListeningButton, &QPushButton::clicked,this, &Server::stopListening);
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QPushButton *quitButton = new QPushButton(tr("Quit"));
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quitButton->setAutoDefault(false);
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connect(quitButton, &QPushButton::clicked, this, &Server::close);
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QDialogButtonBox *buttonBox = new QDialogButtonBox;
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buttonBox->addButton(listenButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(stopListeningButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
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QGridLayout *mainLayout = new QGridLayout(this);
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mainLayout->addWidget(hostLabel, 0, 0);
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mainLayout->addWidget(hostLineEdit, 0, 1);
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mainLayout->addWidget(statusLabel, 2, 0, 3, 2);
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mainLayout->addWidget(buttonBox, 10, 0, 2, 2);
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setWindowTitle(QGuiApplication::applicationDisplayName());
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hostLineEdit->setFocus();
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}
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void Server::listenToServer()
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{
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name = hostLineEdit->text();
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if (!server->listen(name)) {
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QMessageBox::critical(this, tr("Local Fortune Server"),
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tr("Unable to start the server: %1.")
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.arg(server->errorString()));
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name.clear();
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return;
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}
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statusLabel->setText(tr("The server is running.\n"
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"Run the Local Fortune Client example now."));
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toggleListenButton();
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}
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void Server::stopListening()
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{
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server->close();
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name.clear();
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statusLabel->setText(idleStateText);
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toggleListenButton();
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}
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void Server::toggleListenButton()
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{
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if (server->isListening()) {
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listenButton->setDisabled(true);
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stopListeningButton->setEnabled(true);
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} else {
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listenButton->setEnabled(!hostLineEdit->text().isEmpty());
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stopListeningButton->setDisabled(true);
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}
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}
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void Server::sendFortune()
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{
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QByteArray block;
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QDataStream out(&block, QIODevice::WriteOnly);
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out.setVersion(QDataStream::Qt_6_0);
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const int fortuneIndex = QRandomGenerator::global()->bounded(0, fortunes.size());
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const QString &message = fortunes.at(fortuneIndex);
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out << quint32(message.size());
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out << message;
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QLocalSocket *clientConnection = server->nextPendingConnection();
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connect(clientConnection, &QLocalSocket::disconnected,
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clientConnection, &QLocalSocket::deleteLater);
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clientConnection->write(block);
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clientConnection->flush();
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clientConnection->disconnectFromServer();
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}
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