rawTherapee/rtgui/progressconnector.h

114 lines
2.8 KiB
C++

/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RawTherapee 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _PROGRESSCONNECTOR_
#define _PROGRESSCONNECTOR_
#include <sigc++/sigc++.h>
#include <gtkmm.h>
#include "../rtengine/rtengine.h"
#include "guiutils.h"
#undef THREAD_PRIORITY_NORMAL
class PLDBridge : public rtengine::ProgressListener
{
rtengine::ProgressListener* pl;
public:
explicit PLDBridge ( rtengine::ProgressListener* pb)
: pl(pb) {}
// ProgressListener interface
void setProgress (double p)
{
GThreadLock lock;
pl->setProgress(p);
}
void setProgressStr (Glib::ustring str)
{
GThreadLock lock;
Glib::ustring progrstr;
progrstr = M(str);
pl->setProgressStr(progrstr);
}
void setProgressState (bool inProcessing)
{
GThreadLock lock;
pl->setProgressState(inProcessing);
}
void error (Glib::ustring descr)
{
GThreadLock lock;
pl->error(descr);
}
};
template<class T>
class ProgressConnector
{
private:
sigc::signal0<T> opStart;
sigc::signal0<bool> opEnd;
T retval;
Glib::Thread *workThread;
IdleRegister idle_register;
void workingThread ()
{
retval = opStart.emit();
const auto func = [](gpointer data) -> gboolean {
sigc::signal0<bool>* const opEnd = static_cast<sigc::signal0<bool>*>(data);
const gboolean res = opEnd->emit();
delete opEnd;
return res;
};
idle_register.add(func, new sigc::signal0<bool>(opEnd));
workThread = nullptr;
}
public:
ProgressConnector (): retval( 0 ), workThread( nullptr ) { }
~ProgressConnector()
{
idle_register.destroy();
}
void startFunc (const sigc::slot0<T>& startHandler, const sigc::slot0<bool>& endHandler )
{
if( !workThread ) {
opStart.connect (startHandler);
opEnd.connect (endHandler);
workThread = Glib::Thread::create(sigc::mem_fun(*this, &ProgressConnector<T>::workingThread), 0, true, true, Glib::THREAD_PRIORITY_NORMAL);
}
}
T returnValue()
{
return retval;
}
};
#endif