genode/repos/os/include/input/event.h
Alexander Boettcher 71c3fa53da os: add input touch event type
Issue #1444
2015-03-19 08:57:18 +01:00

89 lines
1.9 KiB
C++

/*
* \brief Input event structure
* \author Norman Feske
* \date 2006-08-16
*/
/*
* Copyright (C) 2006-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__INPUT__EVENT_H_
#define _INCLUDE__INPUT__EVENT_H_
#include <input/keycodes.h>
namespace Input { class Event; }
class Input::Event
{
public:
enum Type { INVALID, MOTION, PRESS, RELEASE, WHEEL, FOCUS, LEAVE, TOUCH };
private:
Type _type;
/*
* For PRESS and RELEASE events, '_code' contains the key code.
* For FOCUS events, '_code' is set to 1 (focus) or 0 (unfocus).
*/
int _code;
/*
* Absolute pointer position coordinates
*/
int _ax, _ay;
/*
* Relative pointer motion vector
*/
int _rx, _ry;
public:
/**
* Constructors
*/
Event():
_type(INVALID), _code(0), _ax(0), _ay(0), _rx(0), _ry(0) { }
Event(Type type, int code, int ax, int ay, int rx, int ry):
_type(type), _code(code),
_ax(ax), _ay(ay), _rx(rx), _ry(ry) { }
/**
* Accessors
*/
Type type() const { return _type; }
int code() const { return _code; }
int ax() const { return _ax; }
int ay() const { return _ay; }
int rx() const { return _rx; }
int ry() const { return _ry; }
/**
* Return key code for press/release events
*/
Keycode keycode() const
{
return _type == PRESS || _type == RELEASE ? (Keycode)_code : KEY_UNKNOWN;
}
bool is_absolute_motion() const { return _type == MOTION && !_rx && !_ry; }
bool is_relative_motion() const { return _type == MOTION && (_rx || _ry); }
bool is_touch_release() const { return _type == TOUCH && (_rx == -1) && (_ry == -1); }
static Event create_touch_event(int ax, int ay, int id, bool last = false)
{
return Event(Type::TOUCH, id, ax, ay, last ? -1 : 0, last ? -1 : 0);
}
};
#endif /* _INCLUDE__INPUT__EVENT_H_ */