GestureEventHandler Class Reference

Handles gesture event and triggers notifier with GestureEventInfo. More...

Inheritance diagram for GestureEventHandler:

Public Member Functions
	GestureEventHandler ()
	~GestureEventHandler ()
void	triggerPinchEvent (const GestureEvent &pinchevnt)
	Only available during events. More...
const GestureEvent *	getPinchEventInfo () const
bool	isHandled () const
void	setHandled (bool yn)
Public Member Functions inherited from CallBacker
	CallBacker ()
	CallBacker (const CallBacker &)
virtual	~CallBacker ()
bool	attachCB (NotifierAccess &, const CallBack &, bool onlyifnew=false)
bool	attachCB (NotifierAccess *notif, const CallBack &cb, bool onlyifnew=false)
void	detachCB (NotifierAccess &, const CallBack &)
void	detachCB (NotifierAccess *notif, const CallBack &cb)
bool	isNotifierAttached (NotifierAccess *) const
	Only for debugging purposes, don't use. More...

Public Attributes
Notifier< GestureEventHandler >	pinchnotifier

Private Attributes
const GestureEvent *	currentevent_
bool	ishandled_

Additional Inherited Members
Protected Member Functions inherited from CallBacker
void	detachAllNotifiers ()
	Call from the destructor of your inherited object. More...

Detailed Description

Handles gesture event and triggers notifier with GestureEventInfo.

The callback function should look like this. It also has isHandled() and setHandled() functions similar to the mouse events, to explicitly handle the callback which prevents other objects in the chain to use it.

void MyClass::handlePinchEventCB( CallBacker* cb )
{
    mDynamicCastGet(const GestureEventHandler*,evh,cb);

    if ( !evh || evh->isHandled() )
        return;

    const GestureEventInfo* gevinfo = evh->getPinchEventInfo();
    if ( !gevinfo )
        return;
    
    Geom::Point2D<int> pos = gevinfo->pos();
    // do some work

    evh->setHandled( true );
}

Constructor & Destructor Documentation

GestureEventHandler::GestureEventHandler

(

)

GestureEventHandler::~GestureEventHandler

(

)

Member Function Documentation

const GestureEvent* GestureEventHandler::getPinchEventInfo

(

)

const

bool GestureEventHandler::isHandled ( ) const

inline

void GestureEventHandler::setHandled ( bool  yn )

inline

void GestureEventHandler::triggerPinchEvent

(

const GestureEvent &

pinchevnt

)

Only available during events.

Member Data Documentation

const GestureEvent* GestureEventHandler::currentevent_

private

bool GestureEventHandler::ishandled_

private

Notifier<GestureEventHandler> GestureEventHandler::pinchnotifier