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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/joystick.h>
#include <iostream>
#include <errno.h>
#include <cstring>
#include "API/Core/Math/point.h"
#include "API/Core/System/clanstring.h"
#include "API/Core/System/error.h"
#include "API/Display/input_event.h"
#include "input_device_linuxjoystick.h"
CL_InputDevice_LinuxJoystick::CL_InputDevice_LinuxJoystick(const std::string& device_)
: device(device_)
{
type = CL_InputDevice::joystick;
fd = open(device.c_str(), O_RDONLY | O_NONBLOCK);
if (fd == -1)
{
throw CL_Error(strerror(errno));
}
char number_of_axes;
char number_of_buttons;
ioctl(fd, JSIOCGBUTTONS, &number_of_buttons );
ioctl(fd, JSIOCGAXES, &number_of_axes );
char name_cstr[256];
if (ioctl(fd, JSIOCGNAME(sizeof(name_cstr)), name_cstr) < 0)
strncpy(name_cstr, "Unknown", sizeof(name_cstr));
name = name_cstr;
axes_states.resize(number_of_axes);
button_states.resize(number_of_buttons);
}
CL_InputDevice_LinuxJoystick::~CL_InputDevice_LinuxJoystick()
{
close(fd);
}
void
CL_InputDevice_LinuxJoystick::process_event(struct js_event event)
{
// We don't threat JS_EVENT_INIT special, so this should do
if (event.type & JS_EVENT_BUTTON)
{
button_states[event.number] = event.value;
send_button_event(event);
}
else if (event.type & JS_EVENT_AXIS)
{
axes_states[event.number] = float(event.value)/32767;
send_axis_event(event);
}
}
void
CL_InputDevice_LinuxJoystick::send_button_event(const struct js_event& event)
{
CL_InputEvent e;
e.device = CL_InputDevice(this);
e.id = event.number;
e.repeat_count = 0;
if (event.value)
{
e.type = CL_InputEvent::pressed;
sig_key_down(e);
}
else
{
e.type = CL_InputEvent::released;
sig_key_up(e);
}
}
void
CL_InputDevice_LinuxJoystick::send_axis_event(const struct js_event& event)
{
CL_InputEvent e;
e.device = CL_InputDevice(this);
e.type = CL_InputEvent::axis_moved;
e.id = event.number;
e.axis_pos = float(event.value)/32767;
e.repeat_count = 0;
sig_axis_move(e);
}
void
CL_InputDevice_LinuxJoystick::keep_alive()
{
struct js_event event;
while (read(fd, &event, sizeof(struct js_event)) != -1)
{
process_event(event);
}
/* EAGAIN is returned when the queue is empty */
if (errno != EAGAIN) {
throw CL_Error(strerror(errno));
}
}
std::string
CL_InputDevice_LinuxJoystick::get_key_name(int num) const
{
return CL_String::from_int(num);
}
// Local Variables: ***
// mode: clanlib ***
// End: ***
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