/usr/include/simgear/canvas/CanvasEvent.hxx is in libsimgear-dev 1:2018.1.1+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/// Canvas Event for event model similar to DOM Level 3 Event Model
//
// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#ifndef CANVAS_EVENT_HXX_
#define CANVAS_EVENT_HXX_
#include "canvas_fwd.hxx"
#include <boost/bimap.hpp>
namespace simgear
{
namespace canvas
{
/**
* Base class for all Canvas events.
*
* The event system is closely following the specification of the DOM Level 3
* Event Model.
*/
class Event:
public SGReferenced
{
public:
/// Event type identifier
enum Type
{
UNKNOWN,
# define ENUM_MAPPING(name, str, class_name)\
name, /*!< class_name (type=str) */
# include "CanvasEventTypes.hxx"
# undef ENUM_MAPPING
CUSTOM_EVENT ///< First event type id available for user defined event
/// type.
/// @see CustomEvent
};
int type;
ElementWeakPtr target,
current_target;
double time;
bool propagation_stopped,
default_prevented;
Event();
// We need a vtable to allow nasal::Ghost to determine the dynamic type
// of the actual event instances.
virtual ~Event();
/**
* Get whether this events support bubbling
*/
virtual bool canBubble() const;
/**
* Set type of event.
*
* If no such type exists it is registered.
*/
void setType(const std::string& type);
int getType() const;
std::string getTypeString() const;
ElementWeakPtr getTarget() const;
ElementWeakPtr getCurrentTarget() const;
/**
* Get time at which the event was generated.
*/
double getTime() const;
/**
* Prevent further propagation of the event during event flow.
*
* @note This does not prevent calling further event handlers registered
* on the current event target.
*/
void stopPropagation();
/**
* Cancel any default action normally taken as result of this event.
*
* @note For event handlers registered on the DesktopGroup (Nasal:
* canvas.getDesktop()) this stops the event from being further
* propagated to the normal FlightGear input event handling code.
*/
void preventDefault();
/**
* Get if preventDefault() has been called.
*/
bool defaultPrevented() const;
static int getOrRegisterType(const std::string& type);
static int strToType(const std::string& type);
static std::string typeToStr(int type);
protected:
struct name {};
struct id {};
typedef boost::bimaps::bimap<
boost::bimaps::tagged<std::string, name>,
boost::bimaps::tagged<int, id>
> TypeMap;
static TypeMap& getTypeMap();
};
} // namespace canvas
} // namespace simgear
#endif /* CANVAS_EVENT_HXX_ */
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