Dali::TouchPoint Struct Reference

A TouchPoint represents a point on the screen that is currently being touched or where touch has stopped. More...

Public Types
enum	State
	Enumeration for Touch state. More...
Public Member Functions
	TouchPoint (int32_t id, State state, float screenX, float screenY)
	Constructor.
	TouchPoint (int32_t id, State state, float screenX, float screenY, float localX, float localY)
	Constructor.
	~TouchPoint ()
	Destructor.
Public Attributes
int32_t	deviceId
	Each touch point has a unique device ID which specifies the touch device for that point.
State	state
	State of the point.
Actor	hitActor
	The actor that was underneath the touch point.
Vector2	local
	The co-ordinates relative to the top-left of the hit-actor.
Vector2	screen
	The co-ordinates relative to the top-left of the screen.

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Detailed Description

A TouchPoint represents a point on the screen that is currently being touched or where touch has stopped.

Since:

2.4, DALi version 1.0.0

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Member Enumeration Documentation

enum Dali::TouchPoint::State

Enumeration for Touch state.

Since:

2.4, DALi version 1.0.0

Enumerator:

Started	Touch or hover started
Finished	Touch or hover finished
Down	Screen touched
Up	Touch stopped
Motion	Finger dragged or hovered
Leave	Leave the boundary of an actor
Stationary	No change from last event. Useful when a multi-point event occurs where all points are sent but indicates that this particular point has not changed since the last time
Interrupted	A system event has occurred which has interrupted the touch or hover event sequence.
Last	Number of states.

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Constructor & Destructor Documentation

Dali::TouchPoint::TouchPoint	(	int32_t	id,
		State	state,
		float	screenX,
		float	screenY
	)

Constructor.

Since:

2.4, DALi version 1.0.0

Parameters:

[in]	id	The touch device ID
[in]	state	The state
[in]	screenX	The X co-ordinate relative to the screen's origin
[in]	screenY	The Y co-ordinate relative to the screen's origin

Dali::TouchPoint::TouchPoint	(	int32_t	id,
		State	state,
		float	screenX,
		float	screenY,
		float	localX,
		float	localY
	)

Constructor.

Since:

2.4, DALi version 1.0.0

Parameters:

[in]	id	The touch device ID
[in]	state	The state
[in]	screenX	The X co-ordinate relative to the screen's origin
[in]	screenY	The Y co-ordinate relative to the screen's origin
[in]	localX	The X co-ordinate relative to the top-left (0.0, 0.0, 0.5) of the actor
[in]	localY	The Y co-ordinate relative to the top-left (0.0, 0.0, 0.5) of the actor

Dali::TouchPoint::~TouchPoint

(

)

Destructor.

Since:

2.4, DALi version 1.0.0

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Member Data Documentation

Vector2 Dali::TouchPoint::local

The co-ordinates relative to the top-left of the hit-actor.

Note:

The top-left of an actor is (0.0, 0.0, 0.5).

If you require the local coordinates of another actor (e.g the parent of the hit actor), then you should use Actor::ScreenToLocal().

State Dali::TouchPoint::state

State of the point.

See also:

State