Add utility class to better debug algorithms

src/Base/Debugger.cpp

@@ -0,0 +1,80 @@
+/***************************************************************************
+ *   Copyright (c) 2012 Werner Mayer <wmayer[at]users.sourceforge.net>     *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 51 Franklin Street,      *
+ *   Fifth Floor, Boston, MA  02110-1301, USA                              *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+# include <QCoreApplication>
+# include <QEvent>
+#endif
+
+#include "Debugger.h"
+#include "Console.h"
+
+using namespace Base;
+
+Debugger::Debugger(QObject* parent)
+  : QObject(parent), isAttached(false)
+{
+}
+
+Debugger::~Debugger()
+{
+}
+
+void Debugger::attach()
+{
+    QCoreApplication::instance()->installEventFilter(this);
+    isAttached = true;
+}
+
+void Debugger::detach()
+{
+    QCoreApplication::instance()->removeEventFilter(this);
+    isAttached = false;
+}
+
+bool Debugger::eventFilter(QObject*, QEvent* event)
+{
+    if (event->type() == QEvent::KeyPress) {
+        if (loop.isRunning()) {
+            loop.quit();
+            return true;
+        }
+    }
+
+    return false;
+}
+
+int Debugger::exec()
+{
+    if (isAttached)
+        Base::Console().Message("TO CONTINUE PRESS ANY KEY...\n");
+    return loop.exec();
+}
+
+void Debugger::quit()
+{
+    loop.quit();
+}
+
+#include "moc_Debugger.cpp"