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evdev_helper.cpp
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evdev_helper.cpp
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/*
** Xbox360 USB Gamepad Userspace Driver
** Copyright (C) 2008 Ingo Ruhnke <grumbel@gmail.com>
**
** This program 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.
**
** This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "evdev_helper.hpp"
#include <linux/input.h>
#include "helper.hpp"
#include "log.hpp"
EvDevRelEnum evdev_rel_names;
EvDevKeyEnum evdev_key_names;
EvDevAbsEnum evdev_abs_names;
const X11KeysymEnum& get_x11keysym_names()
{
static X11KeysymEnum x11keysym_names;
return x11keysym_names;
}
EvDevRelEnum::EvDevRelEnum() :
EnumBox<int>("EV_REL")
{
# include "rel_list.x"
}
EvDevAbsEnum::EvDevAbsEnum() :
EnumBox<int>("EV_ABS")
{
# include "abs_list.x"
}
EvDevKeyEnum::EvDevKeyEnum() :
EnumBox<int>("EV_KEY")
{
# include "key_list.x"
}
X11KeysymEnum::X11KeysymEnum() :
EnumBox<int>("X11Keysym")
{
Display* dpy = XOpenDisplay(NULL);
if (!dpy)
{
log_error("unable to open X11 display, X11 keynames will not be available");
}
else
{
process_keymap(dpy);
XCloseDisplay(dpy);
}
}
void
X11KeysymEnum::process_keymap(Display* dpy)
{
int min_keycode, max_keycode;
XDisplayKeycodes(dpy, &min_keycode, &max_keycode);
int num_keycodes = max_keycode - min_keycode + 1;
int keysyms_per_keycode;
KeySym* keymap = XGetKeyboardMapping(dpy, static_cast<KeyCode>(min_keycode),
num_keycodes,
&keysyms_per_keycode);
for(int i = 0; i < num_keycodes; ++i)
{
if (keymap[i*keysyms_per_keycode] != NoSymbol)
{
KeySym keysym = keymap[i*keysyms_per_keycode];
// FIXME: Duplicate entries confuse the conversion
// std::map<KeySym, int>::iterator it = mapping.find(keysym);
// if (it != mapping.end())
// std::cout << "Duplicate keycode: " << i << std::endl;
const char* keysym_str = XKeysymToString(keysym);
if (!keysym_str)
{
log_warn("couldn't convert keysym " << keysym << " to string");
}
else
{
std::ostringstream str;
str << "XK_" << keysym_str;
add(i, str.str());
}
}
}
XFree(keymap);
}
int xkeysym2keycode(const std::string& name)
{
return get_x11keysym_names()[name];
}
void str2event(const std::string& name, int& type, int& code)
{
if (name == "void" || name == "none")
{
type = -1;
code = -1;
}
else if (name.compare(0, 3, "REL") == 0)
{
type = EV_REL;
code = str2rel(name);
}
else if (name.compare(0, 3, "ABS") == 0)
{
type = EV_ABS;
code = str2abs(name);
}
else if (name.compare(0, 2, "XK") == 0)
{
type = EV_KEY;
code = xkeysym2keycode(name);
}
else if (name.compare(0, 2, "JS") == 0)
{
type = EV_KEY;
code = BTN_JOYSTICK + str2int(name.substr(3));
}
else if (name.compare(0, 3, "KEY") == 0 ||
name.compare(0, 3, "BTN") == 0)
{
type = EV_KEY;
code = str2key(name);
}
else
{
throw std::runtime_error("str2event(): unknown event type prefix: " + name);
}
}
int get_event_type(const std::string& name)
{
if (name == "void" || name == "none")
{
return -1;
}
else if (name.compare(0, 3, "REL") == 0)
{
return EV_REL;
}
else if (name.compare(0, 3, "ABS") == 0)
{
return EV_ABS;
}
else if (name.compare(0, 3, "KEY") == 0 ||
name.compare(0, 3, "BTN") == 0 ||
name.compare(0, 2, "JS") == 0 ||
name.compare(0, 2, "XK") == 0)
{
return EV_KEY;
}
else
{
throw std::runtime_error("get_event_type(): unknown event type prefix: " + name);
}
}
int str2abs(const std::string& name)
{
if (name.compare(0, 5, "ABS_#") == 0)
{
return str2int(name.substr(5));
}
else
{
return evdev_abs_names[name];
}
}
int str2key(const std::string& name)
{
if (name.compare(0, 2, "XK") == 0)
{
return xkeysym2keycode(name);
}
else if (name.compare(0, 2, "JS") == 0)
{
return BTN_JOYSTICK + str2int(name.substr(3));
}
else if (name.compare(0, 5, "KEY_#") == 0)
{
return str2int(name.substr(5));
}
else if (name.compare(0, 3, "KEY") == 0 ||
name.compare(0, 3, "BTN") == 0)
{
return evdev_key_names[name];
}
else
{
throw std::runtime_error("str2key: couldn't convert string: '" + name + "'");
}
}
int str2rel(const std::string& name)
{
if (name.compare(0, 5, "REL_#") == 0)
{
return str2int(name.substr(5));
}
else
{
return evdev_rel_names[name];
}
}
UIEvent str2key_event(const std::string& str)
{
int slot_id;
int device_id;
std::string rest;
split_event_name(str, &rest, &slot_id, &device_id);
return UIEvent::create(device_id, EV_KEY, str2key(rest));
}
UIEvent str2rel_event(const std::string& str)
{
int slot_id;
int device_id;
std::string rest;
split_event_name(str, &rest, &slot_id, &device_id);
return UIEvent::create(device_id, EV_REL, str2rel(rest));
}
UIEvent str2abs_event(const std::string& str)
{
int slot_id;
int device_id;
std::string rest;
split_event_name(str, &rest, &slot_id, &device_id);
return UIEvent::create(device_id, EV_ABS, str2abs(rest));
}
std::string key2str(int v)
{
try
{
return evdev_key_names[v];
}
catch(const std::exception& err)
{
std::ostringstream str;
str << "KEY_#" << v;
return str.str();
}
}
std::string abs2str(int v)
{
try
{
return evdev_abs_names[v];
}
catch(const std::exception& err)
{
std::ostringstream str;
str << "ABS_#" << v;
return str.str();
}
}
std::string rel2str(int v)
{
try
{
return evdev_rel_names[v];
}
catch(const std::exception& err)
{
std::ostringstream str;
str << "REL_#" << v;
return str.str();
}
}
/* EOF */