src/frontends/qt4/InGuiThread.cpp

   1 /**
   2  * \file InGuiThread.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Peter Kümmel
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InGuiThread.h"
  14
  15 #include <QThread>
  16 #include <QEventLoop>
  17 #include <QApplication>
  18 #include <QMutexLocker>
  19
  20
  21 namespace lyx {
  22 namespace frontend {
  23
  24
  25 IntoGuiThreadMover::IntoGuiThreadMover()
  26 {
  27 }
  28
  29
  30 void IntoGuiThreadMover::callInGuiThread()
  31 {
  32         QThread* gui_thread = QApplication::instance()->thread();
  33         if (QThread::currentThread() == gui_thread) {
  34                 synchronousFunctionCall();
  35         } else {
  36                 moveToThread(gui_thread);
  37                 connect(this, SIGNAL(triggerFunctionCall()),
  38                         this, SLOT(doFunctionCall()), Qt::QueuedConnection);
  39                 QMutexLocker lock(&sync_mutex_);
  40                 Q_EMIT triggerFunctionCall();
  41                 condition_.wait(&sync_mutex_);
  42         }
  43 }
  44
  45
  46 void IntoGuiThreadMover::doFunctionCall()
  47 {
  48         synchronousFunctionCall();
  49         condition_.wakeOne();
  50 }
  51
  52
  53 } // namespace frontend
  54 } // namespace lyx
  55
  56 #include "moc_InGuiThread.cpp"