+ implement mechanism to connect QAction signal with class method

This commit is contained in:
wmayer 2015-03-30 23:06:35 +02:00
parent 90b5d64831
commit 018854360d
2 changed files with 157 additions and 0 deletions

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/***************************************************************************
* Copyright (c) 2015 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., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
#endif
#include "ActionFunction.h"
using namespace Gui;
namespace Gui {
class ActionFunctionPrivate
{
public:
QMap<QAction*, boost::function<void()> > actionFuncMap;
};
}
ActionFunction::ActionFunction(QObject* parent)
: QObject(parent), d_ptr(new ActionFunctionPrivate())
{
}
ActionFunction::~ActionFunction()
{
}
void ActionFunction::mapSignal(QAction* action, boost::function<void()> func)
{
Q_D(ActionFunction);
d->actionFuncMap[action] = func;
connect(action, SIGNAL(triggered()), this, SLOT(trigger()));
}
void ActionFunction::trigger()
{
Q_D(ActionFunction);
QAction* a = qobject_cast<QAction*>(sender());
QMap<QAction*, boost::function<void()> >::iterator it = d->actionFuncMap.find(a);
if (it != d->actionFuncMap.end()) {
// invoke the class function here
it.value()();
}
}
#include "moc_ActionFunction.cpp"

86
src/Gui/ActionFunction.h Normal file
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/***************************************************************************
* Copyright (c) 2015 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., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#ifndef GUI_ACTIONFUNCTION_H
#define GUI_ACTIONFUNCTION_H
#include <QObject>
#include <boost/function.hpp>
namespace Gui
{
class ActionFunctionPrivate;
/*!
The class connects the triggered() signal of a QAction instance with the method
of a usual C++ class not derived from QObject.
The class can e.g be used to fill up the context-menu of the view provider classes.
\code
void MyViewProvider::setupContextMenu(QMenu* menu, QObject* receiver, const char* member)
{
Gui::ActionFunction* func = new Gui::ActionFunction(menu);
QAction* a1 = menu->addAction(QObject::tr("Menu item 1..."));
func->mapSignal(a1, boost::bind(&MyViewProvider::doItem1, this));
QAction* a2 = menu->addAction(QObject::tr("Menu item 2..."));
func->mapSignal(a2, boost::bind(&MyViewProvider::doItem2, this));
QAction* a3 = menu->addAction(QObject::tr("Menu item 3..."));
func->mapSignal(a3, boost::bind(&MyViewProvider::doItem3, this));
}
\endcode
@author Werner Mayer
http://www.boost.org/doc/libs/1_57_0/libs/bind/bind.html#with_boost_function
*/
class GuiExport ActionFunction : public QObject
{
Q_OBJECT
public:
/// Constructor
ActionFunction(QObject*);
virtual ~ActionFunction();
/*!
Connects the QAction's triggered() signal with the function \a func
*/
void mapSignal(QAction* a, boost::function<void()> func);
private Q_SLOTS:
void trigger();
private:
QScopedPointer<ActionFunctionPrivate> d_ptr;
Q_DISABLE_COPY(ActionFunction)
Q_DECLARE_PRIVATE(ActionFunction)
};
} //namespace Gui
#endif // GUI_ACTIONFUNCTION_H