Tizen(Headed) Native API
6.5
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GestureDetectors analyse a stream of touch events and attempt to determine the intention of the user. More...
Public Member Functions | |
GestureDetector () | |
Creates an uninitialized GestureDetector. | |
~GestureDetector () | |
Dali::GestureDetector is intended as a base class. | |
GestureDetector (const GestureDetector &handle) | |
This copy constructor is required for (smart) pointer semantics. | |
GestureDetector & | operator= (const GestureDetector &rhs) |
This assignment operator is required for (smart) pointer semantics. | |
void | Attach (Actor actor) |
Attaches an actor to the gesture. | |
void | Detach (Actor actor) |
Detaches the attached actor from the gesture detector. | |
void | DetachAll () |
Detaches all the actors that have been attached to the gesture detector. | |
size_t | GetAttachedActorCount () const |
Returns the number of actors attached to the gesture detector. | |
Actor | GetAttachedActor (size_t index) const |
Returns an actor by index. An empty handle if the index is not valid. | |
Static Public Member Functions | |
static GestureDetector | DownCast (BaseHandle handle) |
Downcasts a handle to GestureDetector handle. |
Detailed Description
GestureDetectors analyse a stream of touch events and attempt to determine the intention of the user.
An actor is attached to a gesture detector and if the detector recognises a pattern in its analysis, it will emit a detected signal to the application.
This is the base class for different gesture detectors available and provides functionality that is common to all the gesture detectors.
- Since:
- 2.4, DALi version 1.0.0
- See also:
- Gesture
Constructor & Destructor Documentation
Creates an uninitialized GestureDetector.
This can be initialized with one of the derived gesture detectors' New() methods. For example, PanGestureDetector::New().
Calling member functions with an uninitialized Dali::GestureDetector handle is not allowed.
- Since:
- 2.4, DALi version 1.0.0
Dali::GestureDetector is intended as a base class.
This is non-virtual since derived Handle types must not contain data or virtual methods.
- Since:
- 2.4, DALi version 1.0.0
Dali::GestureDetector::GestureDetector | ( | const GestureDetector & | handle | ) |
This copy constructor is required for (smart) pointer semantics.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] handle A reference to the copied handle
Member Function Documentation
void Dali::GestureDetector::Attach | ( | Actor | actor | ) |
Attaches an actor to the gesture.
The detected signal will be dispatched when the gesture occurs on the attached actor.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] actor The actor to attach to the gesture detector
- Precondition:
- The gesture detector has been initialized.
- Note:
- You can attach several actors to a gesture detector.
void Dali::GestureDetector::Detach | ( | Actor | actor | ) |
Detaches the attached actor from the gesture detector.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] actor The actor to detach from the gesture detector
- Precondition:
- The gesture detector has been initialized.
- The specified actor has been attached to the gesture detector.
void Dali::GestureDetector::DetachAll | ( | ) |
Detaches all the actors that have been attached to the gesture detector.
- Since:
- 2.4, DALi version 1.0.0
- Precondition:
- The gesture detector has been initialized.
- At least one actor has been attached to the gesture detector.
static GestureDetector Dali::GestureDetector::DownCast | ( | BaseHandle | handle | ) | [static] |
Downcasts a handle to GestureDetector handle.
If handle points to a GestureDetector object, the downcast produces valid handle. If not, the returned handle is left uninitialized.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] handle Handle to an object
- Returns:
- Handle to a GestureDetector object or an uninitialized handle
Reimplemented from Dali::Handle.
Reimplemented in Dali::PanGestureDetector, Dali::LongPressGestureDetector, Dali::TapGestureDetector, and Dali::PinchGestureDetector.
Actor Dali::GestureDetector::GetAttachedActor | ( | size_t | index | ) | const |
Returns an actor by index. An empty handle if the index is not valid.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] index The attached actor's index
- Returns:
- The attached actor or an empty handle
- Precondition:
- The gesture detector has been initialized.
size_t Dali::GestureDetector::GetAttachedActorCount | ( | ) | const |
Returns the number of actors attached to the gesture detector.
- Since:
- 2.4, DALi version 1.0.0
- Returns:
- The count
- Precondition:
- The gesture detector has been initialized.
GestureDetector& Dali::GestureDetector::operator= | ( | const GestureDetector & | rhs | ) |
This assignment operator is required for (smart) pointer semantics.
- Since:
- 2.4, DALi version 1.0.0
- Parameters:
-
[in] rhs A reference to the copied handle
- Returns:
- A reference to this