main.cpp

   1 #include <QtGui>
   2 #include <signal.h>
   3 #include "sak.h"
   4
   5 void sighandler(int signum) {
   6     static bool quitting = false;
   7     qDebug() << "SAK: caught signal " << signum;
   8     signal(signum, SIG_IGN);
   9     if (!quitting) {
  10         quitting = true;
  11         qApp->quit();
  12     }
  13 }
  14
  15
  16 class MySplashScreen : public QSplashScreen
  17 {
  18 public:
  19      MySplashScreen(const QPixmap & px) : QSplashScreen(px) {}
  20 protected:
  21      void timerEvent(QTimerEvent*) { hide(); deleteLater(); }
  22 };
  23
  24
  25 int main(int argc, char** argv)
  26 {
  27     QApplication app (argc, argv);
  28
  29 #ifdef Q_OS_LINUX
  30     app.setGraphicsSystem("raster");
  31 #endif
  32
  33     if (!QSystemTrayIcon::isSystemTrayAvailable()) {
  34         QMessageBox::critical(0, QObject::tr("Systray"),
  35                               QObject::tr("I couldn't detect any system tray "
  36                                           "on this system."));
  37         return 1;
  38     }
  39
  40     signal(SIGINT, sighandler);
  41 #ifdef Q_OS_LINUX
  42     signal(SIGQUIT, sighandler);
  43 #endif
  44     signal(SIGILL, sighandler);
  45     signal(SIGABRT, sighandler);
  46     signal(SIGFPE, sighandler);
  47     signal(SIGSEGV, sighandler);
  48     signal(SIGTERM, sighandler);
  49
  50     QFile lockFile(QDir::homePath() + QDir::separator() + ".sak.run");
  51     if (lockFile.exists()) {
  52         if ( QMessageBox::question(0, "Another instance of SAK is running ", "Another instance of SAK seems to be running right now. Proceeding with this new instance may results in data loss / corruptions. Do you want to proceed?", QMessageBox::Yes | QMessageBox::No , QMessageBox::No) == QMessageBox::No)
  53             return -1;
  54         else {
  55             QFile::remove(lockFile.fileName());
  56         }
  57     }
  58     lockFile.open(QIODevice::ReadWrite);
  59
  60 #ifdef CENSORED
  61     QPixmap px(":/images/active.png");
  62 #else
  63     QPixmap px(":/images/splash.png");
  64 #endif
  65     MySplashScreen* splash = new MySplashScreen(px);
  66     splash->setMask(px.createMaskFromColor(QColor(0,0,0,0), Qt::MaskInColor));
  67     splash->show();
  68     splash->startTimer(2000);
  69     app.processEvents();
  70     Sak sak;
  71     bool rc = app.exec();
  72
  73     lockFile.close();
  74     QFile::remove(lockFile.fileName());
  75     return rc;
  76 }