Base class for touch events. More...

#include <Inventor/touch/events/SoTouchEvent.h>

Inheritance diagram for SoTouchEvent:

Public Types
enum	State { UNKNOWN , UP , DOWN , MOVE }
	The different states a touch event can have. More...

Public Member Functions
virtual SoType	getTypeId () const
	Returns the type identifier for this specific instance.

	SoTouchEvent ()
	Constructor.

State	getState () const
	Gets the touch event state (Up, Down, Move or Unknown).

unsigned long	getFingerId () const
	Gets the id of the finger triggering this event.

SbTime	getElapsedTimeSincePreviousEvent () const
	Gets the elapsed time since previous event, triggered by the same finger, in seconds.

SbTime	getFirstContactTime () const
	Gets the time of first contact in seconds of the finger identified by getFingerId().

SbTime	getElapsedTimeUntilPreviousEvent () const
	Gets the elapsed time between the first contact and previous event, for the finger identified by getFingerId(), in seconds.

SbTime	getPreviousEventTime () const
	Gets the time of previous event of the finger identified by getFingerId().

SbVec2f	getSpeed () const
	Gets the speed (in pixels per second) between the previous event and the current one.

SbVec2f	getPreviousPosition () const
	Gets the previous position of the same finger (in pixels).

SbVec2f	getDisplacement () const
	Gets the deplacement vector (in pixels) between the previous event and the current one.

SbVec2f	getAcceleration () const
	Gets the acceleration vector (in pixels per second squared) between the previous event and the current one.

SbVec2f	getPreviousSpeed () const
	Gets the previous speed (in pixels per second).

SoTouchManager *	getTouchManager () const
	Gets the corresponding TouchManager for this event.

void	setTouchManager (SoTouchManager *manager)
	Sets the TouchManager for this event.

SbVec2f	getFirstPosition () const
	Gets the first position (in pixels).

void	setState (SoTouchEvent::State b)
	Sets the state of the touch event.

void	setFingerId (unsigned long idFinger)
	Sets the id of the finger triggering this event.

virtual void	setPosition (const SbVec2f &p)
	Sets the current position (in pixels) and the displacement vector.

virtual void	setPosition (const SbVec2s &p)
	Sets the window pixel location of the cursor when the event occurred.

virtual void	setTime (SbTime t)
	Sets the time at which the event occurred.

void	setPreviousSpeed ()
	Sets the previous speed in pixels per second.

void	setFirstPosition (SbVec2f)
	Sets the first position (in pixels).

Public Member Functions inherited from SoEvent
	SoEvent ()
	Constructor.

virtual	~SoEvent ()
	Destructor.

SbTime	getTime () const
	Gets the time at which the event occurred.

const SbVec2s &	getPosition () const
	Returns the window pixel location of the cursor when the event occurred as integer values.

const SbVec2f &	getPositionFloat () const
	Returns the window pixel location of the cursor when the event occurred as float values.

const SbVec2s &	getPosition (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as integer values.

const SbVec2f &	getPositionFloat (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as float values.

const SbVec2f &	getNormalizedPosition (const SbViewportRegion &vpRgn) const
	Gets the normalized location of the cursor when the event occurred, relative to the specified viewport region.

void	setShiftDown (SbBool isDown)
	Sets whether the shift key was down when the event occurred.

void	setCtrlDown (SbBool isDown)
	Sets whether the CTRL key was down when the event occurred.

void	setAltDown (SbBool isDown)
	Sets whether the ALT key was down when the event occurred.

void	setButton1Down (SbBool isDown)
	Sets whether mouse Button 1 was down when the event occurred.

SbBool	wasShiftDown () const
	Returns true if the shift key was down when the event occurred.

SbBool	wasCtrlDown () const
	Returns true if the CTRL key was down when the event occurred.

SbBool	wasAltDown () const
	Returns true if the ALT key was down when the event occurred.

SbBool	wasButton1Down () const
	Returns true if mouse button 1 was down when the event occurred.

virtual const SbTrackerInfo *	getTrackerInfo () const
	Gets whether an event object has associated tracker information.

SbTrackerInfo *	getTrackerInfo ()
	Gets whether an event object has associated tracker information.

Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.

template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Static Public Member Functions inherited from SoEvent
static SoType	getClassTypeId ()
	Returns the type id for the SoEvent class.

Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Detailed Description

Base class for touch events.

SoTouchEvent is the base class for touch events in the Open Inventor event model. A touch event typically represents a user finger action on a touch screen input device, such as putting a finger down on the screen. SoTouchEvent is an SoEvent with touch information including the displacement and speed of the finger and the state (UP, DOWN or MOVE).

The SoTouchEvent::getTouchManager() method can be use to retrieve the corresponding touch device currently used and information about other fingers touching the screen at the same time.

Open Inventor also supports gesture events (see SoGestureEvent) such as pinch and rotate. Gesture events are generated by gesture recognizers (see SoGestureRecognizer) which analyze a series of touch events.

Note: Unlike mouse and keyboard events, the application must explicitly register a touch screen device (SoWinTouchScreen, SoQtTouchScreen, etc) in order to get touch events.

Member Enumeration Documentation

◆ State

enum SoTouchEvent::State

The different states a touch event can have.

Enumerator
UNKNOWN	Unknown state.
UP	Up state : The finger is off the screen.
DOWN	Down state : The finger is on the screen.
MOVE	Move state : The finger is moving on the screen.

Definition at line 100 of file SoTouchEvent.h.

Constructor & Destructor Documentation

◆ SoTouchEvent()

SoTouchEvent::SoTouchEvent ( )

Constructor.

Member Function Documentation

◆ getAcceleration()

SbVec2f SoTouchEvent::getAcceleration ( ) const

Gets the acceleration vector (in pixels per second squared) between the previous event and the current one.

◆ getClassTypeId()

static SoType SoTouchEvent::getClassTypeId ( )

static

Returns the type identifier for this class.

◆ getDisplacement()

SbVec2f SoTouchEvent::getDisplacement ( ) const

Gets the deplacement vector (in pixels) between the previous event and the current one.

◆ getElapsedTimeSincePreviousEvent()

SbTime SoTouchEvent::getElapsedTimeSincePreviousEvent ( ) const

Gets the elapsed time since previous event, triggered by the same finger, in seconds.

If the current event is a DOWN, the function returns 0.

◆ getElapsedTimeUntilPreviousEvent()

SbTime SoTouchEvent::getElapsedTimeUntilPreviousEvent ( ) const

Gets the elapsed time between the first contact and previous event, for the finger identified by getFingerId(), in seconds.

◆ getFingerId()

unsigned long SoTouchEvent::getFingerId ( ) const

Gets the id of the finger triggering this event.

◆ getFirstContactTime()

SbTime SoTouchEvent::getFirstContactTime ( ) const

Gets the time of first contact in seconds of the finger identified by getFingerId().

This date is set when the DOWN event occurs.

◆ getFirstPosition()

SbVec2f SoTouchEvent::getFirstPosition ( ) const

Gets the first position (in pixels).

This position is set when the DOWN event occurs.

◆ getPreviousEventTime()

SbTime SoTouchEvent::getPreviousEventTime ( ) const

Gets the time of previous event of the finger identified by getFingerId().

If current event is a DOWN, the function returns the current time.

◆ getPreviousPosition()

SbVec2f SoTouchEvent::getPreviousPosition ( ) const

Gets the previous position of the same finger (in pixels).

If current event is a DOWN, the function returns the current position.

◆ getPreviousSpeed()

SbVec2f SoTouchEvent::getPreviousSpeed ( ) const

Gets the previous speed (in pixels per second).

◆ getSpeed()

SbVec2f SoTouchEvent::getSpeed ( ) const

Gets the speed (in pixels per second) between the previous event and the current one.

◆ getState()

State SoTouchEvent::getState ( ) const

Gets the touch event state (Up, Down, Move or Unknown).

Use enum State.

◆ getTouchManager()

SoTouchManager * SoTouchEvent::getTouchManager ( ) const

Gets the corresponding TouchManager for this event.

◆ getTypeId()

virtual SoType SoTouchEvent::getTypeId ( ) const

virtual

Returns the type identifier for this specific instance.

Reimplemented from SoEvent.

◆ setFingerId()

void SoTouchEvent::setFingerId ( unsigned long idFinger )

Sets the id of the finger triggering this event.

◆ setFirstPosition()

void SoTouchEvent::setFirstPosition ( SbVec2f )

Sets the first position (in pixels).

◆ setPosition() [1/2]

virtual void SoTouchEvent::setPosition ( const SbVec2f & p )

virtual

Sets the current position (in pixels) and the displacement vector.

Reimplemented from SoEvent.

◆ setPosition() [2/2]

virtual void SoTouchEvent::setPosition ( const SbVec2s & p )

virtual

Sets the window pixel location of the cursor when the event occurred.

The position is relative to the lower left corner of the window in which the event occurred.

Reimplemented from SoEvent.

◆ setPreviousSpeed()

void SoTouchEvent::setPreviousSpeed ( )

Sets the previous speed in pixels per second.

◆ setState()

void SoTouchEvent::setState ( SoTouchEvent::State b )

Sets the state of the touch event.

◆ setTime()

virtual void SoTouchEvent::setTime ( SbTime t )

virtual

Sets the time at which the event occurred.

Reimplemented from SoEvent.

◆ setTouchManager()

void SoTouchEvent::setTouchManager ( SoTouchManager * manager )

Sets the TouchManager for this event.

The documentation for this class was generated from the following file:

Inventor/touch/events/SoTouchEvent.h

Open Inventor Release 2023.2.3

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

SEE ALSO

Member Enumeration Documentation

◆ State

Constructor & Destructor Documentation

◆ SoTouchEvent()

Member Function Documentation

◆ getAcceleration()

◆ getClassTypeId()

◆ getDisplacement()

◆ getElapsedTimeSincePreviousEvent()

◆ getElapsedTimeUntilPreviousEvent()

◆ getFingerId()

◆ getFirstContactTime()

◆ getFirstPosition()

◆ getPreviousEventTime()

◆ getPreviousPosition()

◆ getPreviousSpeed()

◆ getSpeed()

◆ getState()

◆ getTouchManager()

◆ getTypeId()

◆ setFingerId()

◆ setFirstPosition()

◆ setPosition() [1/2]

◆ setPosition() [2/2]

◆ setPreviousSpeed()

◆ setState()

◆ setTime()

◆ setTouchManager()