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

Inheritance diagram for GestureEventHandler:

Public Member Functions
	GestureEventHandler ()

	~GestureEventHandler ()

const GestureEvent *	getPinchEventInfo () const

bool	isHandled () const

void	setHandled (bool yn)

void	triggerPinchEvent (const GestureEvent &pinchevnt)
	Only available during events. More...

Public Member Functions inherited from CallBacker
	CallBacker ()

	CallBacker (const CallBacker &)

virtual	~CallBacker ()

bool	attachCB (const NotifierAccess &, const CallBack &, bool onlyifnew=false) const

bool	attachCB (const NotifierAccess *notif, const CallBack &cb, bool onlyifnew=false) const

void	detachAllNotifiers () const
	Call from the destructor of your inherited object. More...

void	detachCB (const NotifierAccess &, const CallBack &) const

void	detachCB (const NotifierAccess *notif, const CallBack &cb) const

virtual bool	isCapsule () const

bool	isNotifierAttached (const NotifierAccess *) const
	Only for debugging purposes, don't use. More...

void	stopReceivingNotifications () const

virtual CallBacker *	trueCaller ()

Public Attributes
Notifier< GestureEventHandler >	pinchnotifier

Private Attributes
const GestureEvent *	currentevent_

bool	ishandled_

Additional Inherited Members
Static Public Member Functions inherited from CallBacker
static void	createReceiverForCurrentThread ()

static void	removeReceiverForCurrentThread ()

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()

GestureEventHandler::~GestureEventHandler ( )

Member Function Documentation

◆ getPinchEventInfo()

const GestureEvent* GestureEventHandler::getPinchEventInfo ( ) const

◆ isHandled()

bool GestureEventHandler::isHandled ( ) const

inline

◆ setHandled()

void GestureEventHandler::setHandled ( bool yn )

inline

◆ triggerPinchEvent()

void GestureEventHandler::triggerPinchEvent ( const GestureEvent & pinchevnt )

Only available during events.

Member Data Documentation

◆ currentevent_

const GestureEvent* GestureEventHandler::currentevent_

private

◆ ishandled_

bool GestureEventHandler::ishandled_