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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Modules *
* *
* Authors: The SOFA Team and external contributors (see Authors.txt) *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#include <sofa/component/misc/InputEventReader.h>
#include <sofa/core/ObjectFactory.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef __linux__
#include <linux/input.h>
#include <poll.h>
#endif
namespace sofa
{
namespace component
{
namespace misc
{
SOFA_DECL_CLASS(InputEventReader)
// Register in the Factory
int InputEventReaderClass = core::RegisterObject("Read events from file")
.add< InputEventReader >();
InputEventReader::InputEventReader()
: filename( initData(&filename, std::string("/dev/input/mouse2"), "filename", "input events file name"))
, inverseSense(initData(&inverseSense, false, "inverseSense", "inverse the sense of the mouvement"))
//, timeout( initData(&timeout, 0, "timeout", "time out to get an event from file" ))
, fd(-1)
, deplX(0), deplY(0)
{
}
void InputEventReader::init()
{
#ifdef __linux__
if((fd = open(filename.getFullPath().c_str(), O_RDONLY)) < 0)
sout << "ERROR: impossible to open the file: " << filename.getValue() << sendl;
#endif
}
InputEventReader::~InputEventReader()
{
#ifdef __linux__
if (fd >= 0)
close(fd);
#endif
}
void InputEventReader::getInputEvents()
{
#ifdef __linux__
if (fd < 0) return;
pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN;
pfd.revents = 0;
while (poll(&pfd, 1, 0 /*timeout.getValue()*/)>0 && (pfd.revents & POLLIN))
{
input_event ev;
read(fd, &ev, sizeof(input_event));
// sout << "event type 0x" << std::hex << ev.type << std::dec << " code 0x" << std::hex << ev.code << std::dec << " value " << ev.value << sendl;
if (ev.type == EV_REL)
{
switch (ev.code)
{
case REL_X:
if (inverseSense.getValue())
{
deplX -= ev.value; break;
}
else
{
deplX += ev.value; break;
}
case REL_Y:
if (inverseSense.getValue())
{
deplY -= ev.value; break;
}
else
{
deplY += ev.value; break;
}
}
}
}
#endif
}
void InputEventReader::handleEvent(core::objectmodel::Event *event)
{
if (dynamic_cast<sofa::simulation::AnimateBeginEvent *>(event))
{
getInputEvents();
if (deplX || deplY)
{
sofa::core::objectmodel::MouseEvent mouseEvent(sofa::core::objectmodel::MouseEvent::Move, deplX, deplY);
deplX = 0;
deplY = 0;
getContext()->propagateEvent(&mouseEvent);
}
}
}
} // namespace misc
} // namespace component
} // namespace sofa
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