Tizen(Headed) Native API  6.5
Classes | Public Types | Public Member Functions | Static Public Member Functions
Dali::Toolkit::ItemView Class Reference
Item View

ItemView is a scrollable layout container. More...

Inheritance diagram for Dali::Toolkit::ItemView:
Dali::Toolkit::Scrollable Dali::Toolkit::Control Dali::CustomActor Dali::Actor Dali::Handle Dali::BaseHandle

Classes

struct  Property
 Enumeration for the instance of properties belonging to the ScrollView class. More...

Public Types

enum  PropertyRange
 Enumeration for the start and end property ranges for this control. More...

Public Member Functions

 ItemView ()
 Creates an uninitialized ItemView; this can be initialized with ItemView::New().
 ItemView (const ItemView &itemView)
 Copy constructor.
ItemView & operator= (const ItemView &itemView)
 Assignment operator.
 ~ItemView ()
 Destructor.
unsigned int GetLayoutCount () const
 Queries the number of layouts.
void AddLayout (ItemLayout &layout)
 Adds a layout.
void RemoveLayout (unsigned int layoutIndex)
 Removes a layout.
ItemLayoutPtr GetLayout (unsigned int layoutIndex) const
 Retrieves a layout.
ItemLayoutPtr GetActiveLayout () const
 Retrieves the currently active layout, if any.
float GetCurrentLayoutPosition (ItemId itemId) const
 Retrieves the current layout-position of an item in the ItemView.
void ActivateLayout (unsigned int layoutIndex, Vector3 targetSize, float durationSeconds)
 Activates one of the layouts; this will resize the ItemView & relayout actors within the ItemView.
void DeactivateCurrentLayout ()
 Deactivates the current layout, if any.
void SetMinimumSwipeSpeed (float speed)
 Sets the minimum swipe speed in pixels per second; A pan gesture must exceed this to trigger a swipe.
float GetMinimumSwipeSpeed () const
 Gets the minimum swipe speed in pixels per second.
void SetMinimumSwipeDistance (float distance)
 Sets the minimum swipe distance in actor coordinates; A pan gesture must exceed this to trigger a swipe.
float GetMinimumSwipeDistance () const
 Gets the minimum swipe distance in actor coordinates.
void SetWheelScrollDistanceStep (float step)
 Set the step of scroll distance in actor coordinates for each wheel event received.
float GetWheelScrollDistanceStep () const
 Get the step of scroll distance in actor coordinates for each wheel event received.
void SetAnchoring (bool enabled)
 Set whether to enable the animation for the layout to scroll to its anchor position after dragging or swiping.
bool GetAnchoring () const
 Get whether the anchor animation is enabled or not.
void SetAnchoringDuration (float durationSeconds)
 Set the duration of the anchor animation in seconds.
float GetAnchoringDuration () const
 Get the duration of the anchor animation in seconds.
void ScrollToItem (ItemId itemId, float durationSeconds)
 Scroll the current layout to a particular item.
void SetRefreshInterval (float intervalLayoutPositions)
 Set the interval between refreshes.
float GetRefreshInterval () const
 Get the interval between refreshes in layout position.
void Refresh ()
 Do a refresh of the item view.
Actor GetItem (ItemId itemId) const
 Given the Item ID, this returns the accompanying actor.
ItemId GetItemId (Actor actor) const
 Returns the Item ID of the specified actor.
void InsertItem (Item newItem, float durationSeconds)
 Insert an item.
void InsertItems (const ItemContainer &newItems, float durationSeconds)
 Insert a set of items; this is more efficient than calling InsertItem() repeatedly.
void RemoveItem (ItemId itemId, float durationSeconds)
 Removes an item with the given ID.
void RemoveItems (const ItemIdContainer &itemIds, float durationSeconds)
 Remove a set of items; this is more efficient than calling RemoveItem() repeatedly.
void ReplaceItem (Item replacementItem, float durationSeconds)
 Replace an item.
void ReplaceItems (const ItemContainer &replacementItems, float durationSeconds)
 Replace a set of items.
void SetItemsParentOrigin (const Vector3 &parentOrigin)
 Set the parent origin of the items.
Vector3 GetItemsParentOrigin () const
 Get the parent origin of the items.
void SetItemsAnchorPoint (const Vector3 &anchorPoint)
 Set the anchor point of the items.
Vector3 GetItemsAnchorPoint () const
 Get the anchor point of the items.
void GetItemsRange (ItemRange &range)
 Get the range of items that are currently in ItemView.
ItemView::LayoutActivatedSignalType & LayoutActivatedSignal ()
 Signal emitted when layout activation is finished.

Static Public Member Functions

static ItemView New (ItemFactory &factory)
 Creates an initialized ItemView.
static ItemView DownCast (BaseHandle handle)
 Downcasts a handle to ItemView handle.

Detailed Description

ItemView is a scrollable layout container.

Multiple ItemLayouts may be provided to determine the logical position of each item layout. Actors are provided from an external ItemFactory to display the currently visible items.

Signals | Signal Name | Method | |---------------------------------|--------------------------------------------| | layoutActivated | LayoutActivatedSignal() |

Since:
2.4, DALi version 1.0.0

Actions | Action Name | Attributes | Description | |---------------|-------------------------|-------------------------------------------------| | stopScrolling | Doesn't have attributes | Stops the scroll animation. See DoAction() |

Since:
3.0, DALi version 1.1.33

Member Enumeration Documentation

enum Dali::Toolkit::ItemView::PropertyRange

Enumeration for the start and end property ranges for this control.

Since:
3.0, DALi version 1.1.18
Enumerator:
PROPERTY_START_INDEX 
Since:
3.0, DALi version 1.1.18
PROPERTY_END_INDEX 

Reserve property indices,.

Since:
3.0, DALi version 1.1.18
ANIMATABLE_PROPERTY_END_INDEX 

Reserve animatable property indices.

Since:
2.4, DALi version 1.0.0

Reimplemented from Dali::Toolkit::Scrollable.

Constructor & Destructor Documentation

Dali::Toolkit::ItemView::ItemView ( )

Creates an uninitialized ItemView; this can be initialized with ItemView::New().

Calling member functions with an uninitialized Dali::Object is not allowed.

Since:
2.4, DALi version 1.0.0
Dali::Toolkit::ItemView::ItemView ( const ItemView &  itemView)

Copy constructor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemViewHandle to an object
Dali::Toolkit::ItemView::~ItemView ( )

Destructor.

This is non-virtual since derived Handle types must not contain data or virtual methods.

Since:
2.4, DALi version 1.0.0

Member Function Documentation

void Dali::Toolkit::ItemView::ActivateLayout ( unsigned int  layoutIndex,
Vector3  targetSize,
float  durationSeconds 
)

Activates one of the layouts; this will resize the ItemView & relayout actors within the ItemView.

This is done by applying constraints from the new layout, and removing constraints from the previous layout.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]layoutIndexThe index of one of the ItemView layouts
[in]targetSizeThe target ItemView & layout size
[in]durationSecondsThe time taken to relayout in seconds (zero for immediate)
Precondition:
layoutIndex is less than GetLayoutCount().
durationSeconds is greater or equal to zero.
void Dali::Toolkit::ItemView::AddLayout ( ItemLayout &  layout)

Adds a layout.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]layoutThe layout
void Dali::Toolkit::ItemView::DeactivateCurrentLayout ( )

Deactivates the current layout, if any.

The constraints applied by the layout will be removed.

Since:
2.4, DALi version 1.0.0
static ItemView Dali::Toolkit::ItemView::DownCast ( BaseHandle  handle) [static]

Downcasts a handle to ItemView handle.

If handle points to a ItemView, the downcast produces valid handle. If not, the returned handle is left uninitialized.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]handleHandle to an object
Returns:
A handle to a ItemView or an uninitialized handle

Reimplemented from Dali::Toolkit::Scrollable.

ItemLayoutPtr Dali::Toolkit::ItemView::GetActiveLayout ( ) const

Retrieves the currently active layout, if any.

Since:
2.4, DALi version 1.0.0
Returns:
The layout, or an uninitialized pointer if no layout is active
bool Dali::Toolkit::ItemView::GetAnchoring ( ) const

Get whether the anchor animation is enabled or not.

Since:
2.4, DALi version 1.0.0
Returns:
Whether the anchor animation is enabled or not.
float Dali::Toolkit::ItemView::GetAnchoringDuration ( ) const

Get the duration of the anchor animation in seconds.

Since:
2.4, DALi version 1.0.0
Returns:
The duration of the anchor animation
float Dali::Toolkit::ItemView::GetCurrentLayoutPosition ( ItemId  itemId) const

Retrieves the current layout-position of an item in the ItemView.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemIdThe item identifier
Returns:
The current layout-position
Actor Dali::Toolkit::ItemView::GetItem ( ItemId  itemId) const

Given the Item ID, this returns the accompanying actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemIdThe Item ID of the actor required.
Returns:
The Actor corresponding to the Item ID.
ItemId Dali::Toolkit::ItemView::GetItemId ( Actor  actor) const

Returns the Item ID of the specified actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]actorThe actor whose Item ID is required.
Returns:
The Item ID of the item.
Precondition:
The actor should be an item of ItemView.
Vector3 Dali::Toolkit::ItemView::GetItemsAnchorPoint ( ) const

Get the anchor point of the items.

Since:
2.4, DALi version 1.0.0
Returns:
The current anchor point of the items
Vector3 Dali::Toolkit::ItemView::GetItemsParentOrigin ( ) const

Get the parent origin of the items.

Since:
2.4, DALi version 1.0.0
Returns:
The current parent origin of the items
void Dali::Toolkit::ItemView::GetItemsRange ( ItemRange &  range)

Get the range of items that are currently in ItemView.

Since:
2.4, DALi version 1.0.0
Parameters:
[out]rangeThe range of items.
ItemLayoutPtr Dali::Toolkit::ItemView::GetLayout ( unsigned int  layoutIndex) const

Retrieves a layout.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]layoutIndexThe index of the layout to retrieve
Returns:
The layout
Precondition:
layoutIndex is less than GetLayoutCount().
unsigned int Dali::Toolkit::ItemView::GetLayoutCount ( ) const

Queries the number of layouts.

Since:
2.4, DALi version 1.0.0
Returns:
The number of layouts
float Dali::Toolkit::ItemView::GetMinimumSwipeDistance ( ) const

Gets the minimum swipe distance in actor coordinates.

Since:
2.4, DALi version 1.0.0
Returns:
The minimum swipe distance
float Dali::Toolkit::ItemView::GetMinimumSwipeSpeed ( ) const

Gets the minimum swipe speed in pixels per second.

Since:
2.4, DALi version 1.0.0
Returns:
The minimum swipe speed
float Dali::Toolkit::ItemView::GetRefreshInterval ( ) const

Get the interval between refreshes in layout position.

Since:
2.4, DALi version 1.0.0
Returns:
The refresh interval
float Dali::Toolkit::ItemView::GetWheelScrollDistanceStep ( ) const

Get the step of scroll distance in actor coordinates for each wheel event received.

Since:
2.4, DALi version 1.0.0
Returns:
The step of scroll distance(pixel)
void Dali::Toolkit::ItemView::InsertItem ( Item  newItem,
float  durationSeconds 
)

Insert an item.

A relayout will occur for the existing actors; for example if InsertItem(Item(2, ActorZ), 0) is called, the items with ID 2 or greater will be moved: Initial actors: After insert: ID 1 - ActorA ID 1 - ActorA ID 2 - ActorB ID 2 - ActorZ ! ID 3 - ActorC ID 3 - ActorB ID 4 - ActorC

Since:
2.4, DALi version 1.0.0
Parameters:
[in]newItemThe item to insert.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
void Dali::Toolkit::ItemView::InsertItems ( const ItemContainer &  newItems,
float  durationSeconds 
)

Insert a set of items; this is more efficient than calling InsertItem() repeatedly.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]newItemsThe items to insert.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
ItemView::LayoutActivatedSignalType& Dali::Toolkit::ItemView::LayoutActivatedSignal ( )

Signal emitted when layout activation is finished.

A callback of the following type may be connected: 

   void YourCallbackName();
Since:
2.4, DALi version 1.0.0
Returns:
The signal to connect to.
Precondition:
The Object has been initialized.
static ItemView Dali::Toolkit::ItemView::New ( ItemFactory &  factory) [static]

Creates an initialized ItemView.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]factoryThe factory which provides ItemView with items
Returns:
A handle to a newly allocated Dali resource
ItemView& Dali::Toolkit::ItemView::operator= ( const ItemView &  itemView)

Assignment operator.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemViewHandle to an object
Returns:
A reference to this
void Dali::Toolkit::ItemView::Refresh ( )

Do a refresh of the item view.

Since:
2.4, DALi version 1.0.0
void Dali::Toolkit::ItemView::RemoveItem ( ItemId  itemId,
float  durationSeconds 
)

Removes an item with the given ID.

A relayout will occur for the remaining actors; for example if RemoveItem(Item(2, ActorZ), 0) is called, the items with ID 3 or greater will be moved: | Initial actors: | After remove: | |:------------------ |:-------------- | | ID 1 - ActorA | ID 1 - ActorA | | ID 2 - ActorB | ID 2 - ActorC (previously ID 3) | | ID 3 - ActorC | ID 3 - ActorB (previously ID 4) | | ID 4 - ActorD | |

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemIdThe Item ID of the item to remove.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
void Dali::Toolkit::ItemView::RemoveItems ( const ItemIdContainer &  itemIds,
float  durationSeconds 
)

Remove a set of items; this is more efficient than calling RemoveItem() repeatedly.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemIdsThe IDs of the items to remove.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
void Dali::Toolkit::ItemView::RemoveLayout ( unsigned int  layoutIndex)

Removes a layout.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]layoutIndexThe index of one of the ItemView layouts
Precondition:
layoutIndex is less than GetLayoutCount().
void Dali::Toolkit::ItemView::ReplaceItem ( Item  replacementItem,
float  durationSeconds 
)

Replace an item.

A relayout will occur for the replacement item only.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]replacementItemThe replacement for an existing item.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
void Dali::Toolkit::ItemView::ReplaceItems ( const ItemContainer &  replacementItems,
float  durationSeconds 
)

Replace a set of items.

A relayout will occur for the replacement items only.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]replacementItemsThe replacements for a set of existing items.
[in]durationSecondsHow long the relayout takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the relayout occurs instantly.
void Dali::Toolkit::ItemView::ScrollToItem ( ItemId  itemId,
float  durationSeconds 
)

Scroll the current layout to a particular item.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]itemIdThe ID of an item in the layout.
[in]durationSecondsHow long the scrolling takes in seconds.
Precondition:
durationSeconds must be zero or greater; zero means the layout should scroll to the particular item instantly. If calling this with zero second of duration immediately after calling ActivateLayout, it might not work unless the duration of relayout animation for ActivateLayout is also set to be zero.
void Dali::Toolkit::ItemView::SetAnchoring ( bool  enabled)

Set whether to enable the animation for the layout to scroll to its anchor position after dragging or swiping.

The anchor position is the position where all the items in the layout are aligned to their closest rounded layout positions in integer.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]enabledWhether the anchor animation is enabled or not.
void Dali::Toolkit::ItemView::SetAnchoringDuration ( float  durationSeconds)

Set the duration of the anchor animation in seconds.

This is the time taken to reach the nearest anchor position after a drag or swipe gesture ends.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]durationSecondsThe duration of the anchor animation in seconds.
Precondition:
durationSeconds must be greater than zero.
void Dali::Toolkit::ItemView::SetItemsAnchorPoint ( const Vector3 &  anchorPoint)

Set the anchor point of the items.

A relayout will occur for all the items if the anchor point is different than the current one.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]anchorPointNew anchor point position vector
void Dali::Toolkit::ItemView::SetItemsParentOrigin ( const Vector3 &  parentOrigin)

Set the parent origin of the items.

A relayout will occur for all the items if the parent origin is different than the current one.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]parentOriginNew parent origin position vector
void Dali::Toolkit::ItemView::SetMinimumSwipeDistance ( float  distance)

Sets the minimum swipe distance in actor coordinates; A pan gesture must exceed this to trigger a swipe.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]distanceThe minimum swipe distance
void Dali::Toolkit::ItemView::SetMinimumSwipeSpeed ( float  speed)

Sets the minimum swipe speed in pixels per second; A pan gesture must exceed this to trigger a swipe.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]speedThe minimum swipe speed
void Dali::Toolkit::ItemView::SetRefreshInterval ( float  intervalLayoutPositions)

Set the interval between refreshes.

When the layout-position of items is changed by this interval, new items are requested from ItemFactory.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]intervalLayoutPositionsThe refresh interval in layout position.
void Dali::Toolkit::ItemView::SetWheelScrollDistanceStep ( float  step)

Set the step of scroll distance in actor coordinates for each wheel event received.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]stepThe step of scroll distance(pixel).