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 "frontends/Application.h"
  16
  17 #include <QThread>
  18 #include <QEventLoop>
  19 #include <QApplication>
  20 #include <QMutexLocker>
  21
  22
  23 namespace lyx {
  24 namespace frontend {
  25
  26
  27 IntoGuiThreadMover::IntoGuiThreadMover()
  28 {
  29 }
  30
  31
  32 void IntoGuiThreadMover::callInGuiThread()
  33 {
  34         if (!theApp() || !QApplication::instance() ||
  35                 QThread::currentThread() == QApplication::instance()->thread()) {
  36                 synchronousFunctionCall();
  37         } else {
  38                 moveToThread(QApplication::instance()->thread());
  39                 connect(this, SIGNAL(triggerFunctionCall()),
  40                         this, SLOT(doFunctionCall()), Qt::QueuedConnection);
  41                 QMutexLocker lock(&sync_mutex_);
  42                 Q_EMIT triggerFunctionCall();
  43                 condition_.wait(&sync_mutex_);
  44         }
  45 }
  46
  47
  48 void IntoGuiThreadMover::doFunctionCall()
  49 {
  50         synchronousFunctionCall();
  51         condition_.wakeOne();
  52 }
  53
  54
  55 } // namespace frontend
  56 } // namespace lyx
  57
  58 #include "moc_InGuiThread.cpp"