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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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/>.
*/
#pragma once
#include "common/basic_types.h"
#include "common/stdmap.h"
class EventData {
public:
EventData() { }
virtual ~EventData() { }
};
//! Event
/*!
A \c Event holds an event type and a pointer to event data.
*/
class Event {
public:
typedef UInt32 Type;
enum {
kUnknown, //!< The event type is unknown
kQuit, //!< The quit event
kSystem, //!< The data points to a system event type
kTimer, //!< The data points to timer info
kLast //!< Must be last
};
typedef UInt32 Flags;
enum {
kNone = 0x00, //!< No flags
kDeliverImmediately = 0x01, //!< Dispatch and free event immediately
kDontFreeData = 0x02 //!< Don't free data in deleteData
};
Event();
//! Create \c Event with data (POD)
/*!
The \p data must be POD (plain old data) allocated by malloc(),
which means it cannot have a constructor, destructor or be
composed of any types that do. For non-POD (normal C++ objects
use \c setDataObject().
\p target is the intended recipient of the event.
\p flags is any combination of \c Flags.
*/
Event(Type type, void* target = NULL, void* data = NULL,
Flags flags = kNone);
//! @name manipulators
//@{
//! Release event data
/*!
Deletes event data for the given event (using free()).
*/
static void deleteData(const Event&);
//! Set data (non-POD)
/*!
Set non-POD (non plain old data), where delete is called when the event
is deleted, and the destructor is called.
*/
void setDataObject(EventData* dataObject);
//@}
//! @name accessors
//@{
//! Get event type
/*!
Returns the event type.
*/
Type getType() const;
//! Get the event target
/*!
Returns the event target.
*/
void* getTarget() const;
//! Get the event data (POD).
/*!
Returns the event data (POD).
*/
void* getData() const;
//! Get the event data (non-POD)
/*!
Returns the event data (non-POD). The difference between this and
\c getData() is that when delete is called on this data, so non-POD
(non plain old data) dtor is called.
*/
EventData* getDataObject() const;
//! Get event flags
/*!
Returns the event flags.
*/
Flags getFlags() const;
//@}
private:
Type m_type;
void* m_target;
void* m_data;
Flags m_flags;
EventData* m_dataObject;
};
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