49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
#include "singleapplication.h"
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#include <cstdlib>
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/**
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* @brief Constructor. Checks and fires up LocalServer or closes the program
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* if another instance already exists
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* @param argc
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* @param argv
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*/
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SingleApplication::SingleApplication(int &argc, char **argv)
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: QApplication(argc, argv)
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{
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QString serverName = QApplication::organizationName() + QApplication::applicationName();
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serverName.replace(QRegExp("[^\\w\\-. ]"), "");
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// Attempt to connect to the LocalServer
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socket = new QLocalSocket();
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socket->connectToServer(serverName);
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if(socket->waitForConnected(1000)){
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socket->close();
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::exit(EXIT_SUCCESS); // Terminate the program using STDLib's exit function
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} else {
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// If the connection is insuccessful, this is the main process
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// So we create a Local Server
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server = new QLocalServer();
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server->removeServer(serverName);
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server->listen(serverName);
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QObject::connect(server, SIGNAL(newConnection()), this, SLOT(slotConnectionEstablished()));
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}
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}
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/**
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* @brief Destructor
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*/
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SingleApplication::~SingleApplication()
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{
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server->close();
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}
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/**
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* @brief Executed when the showUp command is sent to LocalServer
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*/
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void SingleApplication::slotConnectionEstablished()
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{
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server->nextPendingConnection();
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emit showUp();
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}
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