Drag and drop input manipulator recognizes the drag and drop gesture from incoming touch events. More...

#include <kanzi/core.ui/input/drag_and_drop_manipulator.hpp>

Inheritance diagram for kanzi::DragAndDropManipulator:

Classes
class	CanceledMessageArguments
	Message arguments for the drag-and-drop cancel message. More...

class	FinishedMessageArguments
	Message arguments for drag and drop finished message. Inherits argument properties from InputManipulator::InputMessageArguments. More...

class	MovedMessageArguments
	Message arguments for drag and drop moved message. Inherits argument properties from InputManipulator::InputMessageArguments. More...

class	StartedMessageArguments
	Message arguments for drag and drop started message. Inherits argument properties from InputManipulator::InputMessageArguments. More...

Public Member Functions
void	setPressDuration (chrono::milliseconds pressDuration)
	Set the duration in milliseconds of the long press before drag and drop starts. The default duration is 500ms. More...

Public Member Functions inherited from kanzi::InputManipulator
void	attach (Node &node)
	Attaches an input manipulator to a node. More...

void	cancel ()
	Notify manipulator of touch canceling. More...

void	detach ()
	Detaches an input manipulator. More...

Node *	getAttachedNode () const
	Gets the node to which the input manipulator is attached. More...

InputManipulator *	getDependantManipulator () const
	Gets the dependant input manipulator. More...

EventRoutingMode	getEventRoutingMode ()
	Returns the current input event routing mode. More...

InputManipulatorWeakPtr	getFailManipulator () const
	Gets the fail manipulator. More...

State	getState () const
	Get the state of an input manipulator. More...

KZ_DEPRECATED TouchEventRoutingMode	getTouchEventRoutingMode ()
	Returns the current touch event routing mode. More...

ManipulatorType	getType () const
	Returns the type of the input manipulator. More...

bool	isActive () const
	Checks whether an input manipulator is in active state. More...

bool	isAttached () const
	Tells whether the input manipulator is attached to a node. More...

bool	isCancelable () const
	Returns whether an input manipulator is in a cancelable state. More...

bool	isResettable () const
	Returns whether an input manipulator is in a resettable state. More...

void	requireToFail (InputManipulatorWeakPtr manipulatorToFail)
	Sets the input manipulator that must fail before Kanzi can recognize this input manipulator. More...

void	reset ()
	Reset the manipulator. More...

void	setEventRoutingMode (EventRoutingMode mode)
	Sets the input event routing mode that you want the input manager to use when distributing the input event data to manipulators. More...

void	setReferenceNode (NodeWeakPtr referenceNode)
	Override the attached node as the hit test reference node. More...

void	setState (State state)
	Set the state of an input manipulator. More...

KZ_DEPRECATED void	setTouchEventRoutingMode (TouchEventRoutingMode mode)
	Sets the touch event routing mode that you want the input manager to use when distributing the touch points to input manipulators. More...

	~InputManipulator () override
	Destructor. More...

Public Member Functions inherited from kanzi::Object
AppliedStyleEntrySharedPtr	applyObjectStyle (kanzi::StyleSharedPtr style)
	Applies a style to an object. More...

void	applyObjectStyles ()
	Apply all styles for an object node. More...

Domain *	getDomain () const
	Returns the domain the object belongs to. More...

const Metaclass *	getDynamicMetaclass () const override
	Returns the metaclass of the dynamic type of the object. More...

MainLoopScheduler *	getMainLoopScheduler () const
	Returns the MainLoopScheduler instance of the associated Domain. More...

detail::MessageDispatcher *	getMessageDispatcher () const
	Returns the message dispatcher of the object. More...

ResourceManager *	getResourceManager () const
	Returns the resource manager of the object. More...

ScriptingContextSharedPtr	getScriptingContext () const
	Gets the scripting context of the object. More...

	Object (Domain *domain)

void	setScriptingContext (ScriptingContextSharedPtr context)
	Sets the scripting context of the object. More...

void	unapplyObjectStyle (AppliedStyleEntrySharedPtr appliedStyleEntry)

void	unapplyObjectStyles ()
	Unapplies and removes all applied styles. More...

	~Object () override

Public Member Functions inherited from kanzi::MetaObject
bool	isTypeOf (const Metaclass *objectType) const
	Determines if the type of this object is the given type or derived from it. More...

virtual	~MetaObject ()

Public Member Functions inherited from kanzi::PropertyObject
template<typename DataType >
void	addPropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)

template<typename DataType >
void	addPropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)

template<typename DataType >
void	addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, PropertyValuePrecedence precedence, void ownerPointer)

template<typename DataType >
void	addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, PropertyValuePrecedence precedence, AbstractPropertyTypeDescriptor::ValueSourceOwner owner)

PropertyStorageContainer::iterator	beginPropertyStorage ()
	Returns the begin iterator to the internal property storage container. More...

PropertyStorageContainer::const_iterator	beginPropertyStorage () const
	Returns the begin iterator to the internal property storage container. More...

void	clearPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)

void	copyLocalValue (const PropertyObject &other, AbstractPropertyType propertyType)
	Copies local value of single property from another object. More...

void	copyLocalValues (const PropertyObject &other)
	Copies all local values from another object. More...

PropertyStorageContainer::iterator	endPropertyStorage ()
	Returns the end iterator to the internal property storage container. More...

PropertyStorageContainer::const_iterator	endPropertyStorage () const
	Returns the end iterator to the internal property storage container. More...

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getAbstractProperty (AbstractPropertyType abstractPropertyType) const

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getAbstractPropertyBase (AbstractPropertyType abstractPropertyType) const

template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType >	getOptionalAbstractProperty (AbstractPropertyType abstractPropertyType) const

template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType >	getOptionalProperty (const PropertyType< DataType > &propertyType) const
	Evaluates the property value in the same way as the overload above but does not default to the value in property metadata if there are no inputs to the property value. More...

template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType >	getOptionalPropertyBase (const PropertyType< DataType > &propertyType) const
	Returns the current value of a property disregarding modifiers, but does not default to the value in property metadata if there are no inputs to the property value. More...

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getProperty (const PropertyType< DataType > &propertyType) const
	Returns the current value of a property type. More...

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getPropertyBase (const PropertyType< DataType > &propertyType) const
	Returns the current value of a property disregarding modifiers. More...

template<typename DataType >
size_t	getPropertyNotificationHandlerCount (const PropertyType< DataType > &propertyType) const
	Gets number of current notification handlers for given property type. More...

bool	hasBaseValue (AbstractPropertyType propertyType) const
	Evaluates whether there are any inputs into the property value, disregarding modifiers. More...

bool	hasLocalValue (AbstractPropertyType propertyType) const
	Evaluates whether there is a local value set for the property. More...

bool	hasNonClassValue (AbstractPropertyType propertyType) const
	Evaluates whether there is a value of any precedence higher than class default value set for the property. More...

bool	hasValue (AbstractPropertyType propertyType) const
	Evaluates whether there are any inputs into the property value. More...

bool	isPropertyFlagSet (AbstractPropertyType propertyType, uint32_t flag) const

virtual void	onPropertyChanged (AbstractPropertyType propertyType, PropertyNotificationReason reason)
	Virtual function to handle property change notifications. More...

	PropertyObject ()

void	removeKzbProperties ()

template<typename DataType >
void	removeLocalPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, void ownerPointer)

void	removeLocalValue (AbstractPropertyType propertyType)
	Removes the local value associated with the property. More...

template<typename DataType >
void	removePropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)

template<typename DataType >
void	removePropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)

template<typename DataType >
void	removePropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, void ownerPointer)

template<typename DataType >
void	setAbstractProperty (AbstractPropertyType abstractPropertyType, typename PropertyType< DataType >::Traits::ParameterType value)

template<typename DataType >
void	setProperty (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Traits::ParameterType value)
	Sets the local value of a property type. More...

void	setPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)

void	validatePropertyModifiers (AbstractPropertyType propertyType)

virtual	~PropertyObject ()

Static Public Member Functions
static DragAndDropManipulatorSharedPtr	create (Domain *domain, string_view="")

static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()

Static Public Member Functions inherited from kanzi::Object
static const Metaclass *	getStaticMetaclass ()
	Returns the metaclass of Object class. More...

static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()
	Default implementation that returns empty editor info. More...

Static Public Member Functions inherited from kanzi::MetaObject
static const Metaclass *	getStaticMetaclass ()
	Returns the metaclass of Object class. More...

static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()
	Default implementation that returns empty editor info. More...

Static Public Attributes
static MessageType< CanceledMessageArguments >	CanceledMessage
	Message type that notifies about the cancellation of the drag-and-drop gesture. More...

static MessageType< FinishedMessageArguments >	FinishedMessage
	Message type for notifying end of the recognized drag and drop gesture. More...

static MessageType< MovedMessageArguments >	MovedMessage
	Message type for notifying update on position for the recognized gesture. More...

static MessageType< StartedMessageArguments >	StartedMessage
	Message type for notifying the beginning of the drag and drop gesture. More...

Protected Member Functions
	DragAndDropManipulator (Domain *domain)
	Constructor. More...

void	notifyTouchInside (const TouchInfo &touchInfo) override
	InputManipulator::notifyTouchInside implementation. More...

void	notifyTouchOutside (const TouchInfo &touchInfo) override
	InputManipulator::notifyTouchOutside implementation. More...

void	onCancel () override
	Kanzi calls this when DragAndDropManipulator is canceled. More...

void	onLongPressCompleted ()
	Timer callback for successful long press. More...

void	onReset () override
	InputManipulator::onReset implementation. More...

void	trackDragAndDrop (const TouchInfo &touchInfo)
	Update the drag and drop gesture state with touch event. More...

Protected Member Functions inherited from kanzi::InputManipulator
void	addHitTestArguments (MessageArguments &message, const TouchPoint &touchPoint)
	Add hit test information arguments to the message from the touch point. More...

bool	detectKeyGesture (const KeyEvent &event, KeyGestureInfo &gesture)
	Detects key gestures from the event that you pass as an argument. More...

Node2D *	findNearestParent2D ()
	Find the 2D manipulator node for this input manipulator. More...

InputManager *	getInputManager () const
	Get the attached input manager of an input manipulator. More...

	InputManipulator (Domain *domain, ManipulatorType type=ManipulatorType::TouchInputHandler)
	Constructor. More...

virtual bool	isCancelableOverride () const
	Overridable check for the cancelable status of an input manipulator. More...

virtual bool	isResettableOverride () const
	Overridable check for the resettable status of an input manipulator. More...

virtual bool	notifyKeyInput (const KeyEvent &event)
	Notify an input manipulator about a key event that occurs on the attached node. More...

virtual void	onAttach ()
	Attach function for input manipulators. More...

virtual void	onDetach ()
	Detach function for input manipulators. More...

virtual void	onFail ()
	Fail function for input manipulators. More...

virtual void	onKeyPressGesture (KeyGestureInfo &gesture)
	The detectKeyGesture() method calls this method when it detects a key press gesture. More...

virtual void	onKeyReleaseGesture (KeyGestureInfo &gesture)
	The detectKeyGesture() method calls this method when it detects a key release gesture. More...

virtual void	onPartialKeyPressGesture (KeyGestureInfo &gesture)
	The detectKeyGesture() method calls this method when it detects a partial key press gesture. More...

Protected Member Functions inherited from kanzi::Object
void	initialize ()

void	onCopy (const Object &other)

Protected Member Functions inherited from kanzi::MetaObject
void	initialize ()

	MetaObject ()

Protected Member Functions inherited from kanzi::PropertyObject
AbstractPropertyTypeDescriptor::ValueSourceEntry *	acquireLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, PropertyStoragePtr &propertyStorage)
	Acquires a local value source entry that is free for the assignment of a value. More...

AbstractPropertyTypeDescriptor::ModifierStorage *	acquireModifierStorage (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)

AbstractPropertyTypeDescriptor::NotificationStorage *	acquireNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)

PropertyStoragePtr	acquirePropertyStorage (AbstractPropertyTypeDescriptor &descriptor)

void	addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource valueSource, PropertyValuePrecedence precedence, void ownerPointer)
	Internally adds a property value source. More...

void	addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource valueSource, PropertyValuePrecedence precedence, AbstractPropertyTypeDescriptor::ValueSourceOwner owner)
	Internally adds a property value source. More...

AbstractPropertyTypeDescriptor::ValueSourceEntry *	constructLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)

PropertyStoragePtr	constructPropertyStorage (AbstractPropertyTypeDescriptor &descriptor)

void	copyLocalValue (const AbstractPropertyTypeDescriptor::PropertyStorage &otherPropertyStorage)
	Copy local value from property storage. More...

AbstractPropertyTypeDescriptor::ModifierStorage *	findModifierStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::NotificationStorage *	findNotificationStorage (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::PropertyStorage *	findPropertyStorage (AbstractPropertyTypeDescriptor &descriptor) const
	Gets the property storage for given property type descriptor. More...

PropertyStoragePtr	findPropertyStoragePtr (AbstractPropertyTypeDescriptor &descriptor) const
	Gets property storage intrusive pointer which you can use to hold a reference until the end of the operation. More...

AbstractPropertyTypeDescriptor *	findPropertyTypeDescriptorByNameAndDataType (string_view name, PropertyDataType dataType) const
	Finds a property type descriptor by name and data type. More...

AbstractPropertyTypeDescriptor *	findPropertyTypeDescriptorByQualifiedNameAndDataType (string_view qualifiedName, PropertyDataType dataType) const
	Like findPropertyTypeDescriptorByNameAndDataType, but only searches by matching with qualified names. More...

AbstractPropertyTypeDescriptor *	findPropertyTypeDescriptorByUnqualifiedNameAndDataType (string_view unqualifiedName, PropertyDataType dataType) const
	Like findPropertyTypeDescriptorByNameAndDataType, but only searches by matching with unqualified names. More...

AbstractPropertyTypeDescriptor::ValueSource *	getClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getFinalValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getNonClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getTopValueSource (AbstractPropertyTypeDescriptor &descriptor) const
	Gets the top-level value source for a given property descriptor. More...

virtual void	notifyPropertyHandlers (PropertyStoragePtr &propertyStorage, PropertyNotificationReason reason)

void	onCopy (const PropertyObject &other)

void	removeLocalValue (AbstractPropertyTypeDescriptor &descriptor, PropertyStoragePtr &propertyStorage)
	Removes a local value from the given property storage. More...

void	removePropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource valueSource, void owner)
	Removes a property value source. More...

void	validatePropertyModifiersAndNotifyHandlers (PropertyStoragePtr &propertyStorage)

Additional Inherited Members
Public Types inherited from kanzi::InputManipulator
enum	EventRoutingMode { RoutingBubbling, RoutingTunneling }
	Enumeration for the available input event routing modes. More...

enum	ManipulatorType { ManipulatorType::TouchInputHandler, ManipulatorType::KeyInputHandler }
	Enumeration for the input manipulator type. More...

enum	State { StateReady, StatePossible, StateBegin, StateChange, StateEnd, StateFail, StateDelayed, StateCanceled }
	Enumeration for possible input manipulator states during touch, mouse, or key input sequence. More...

using	TouchEventRoutingMode = EventRoutingMode
	Enumeration for the available touch event routing modes. More...

using	TouchPointsConstIterator = TouchPointsContainer::const_iterator

using	TouchPointsContainer = vector< TouchPoint * >

Public Types inherited from kanzi::PropertyObject
typedef PropertyStorageContainer::const_iterator	PropertyStorageConstIterator

typedef vector< PropertyStoragePtr >	PropertyStorageContainer

typedef PropertyStorageContainer::iterator	PropertyStorageIterator

typedef intrusive_ptr< AbstractPropertyTypeDescriptor::PropertyStorage >	PropertyStoragePtr

typedef PropertyStorageContainer::reverse_iterator	PropertyStorageReverseIterator

Protected Types inherited from kanzi::Object
typedef vector< AppliedStyleEntrySharedPtr >	AppliedStyleContainer
	Applied style container. More...

Static Protected Member Functions inherited from kanzi::InputManipulator
static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()

Protected Attributes inherited from kanzi::Object
AppliedStyleContainer	m_appliedStyles
	Listing of applied styles applied to this object. More...

Detailed Description

Drag and drop input manipulator recognizes the drag and drop gesture from incoming touch events.

It generates messages required to implement the logic for objects which react to the drag and drop gesture. For example, use the drag and drop input manipulator to move objects in an application.

See also: ClickManipulator, LongPressManipulator, MultiClickManipulator, PanManipulator, PinchManipulator

Examples

To receive the drag moved events, add the message handler for the MovedMessage message.

First create a handler method:

    void onDragMoved(DragAndDropManipulator::MovedMessageArguments& /*messageArguments*/)
    {
        // Insert your code to handle the drag moved event here
    }

Then add a message handler for your node:

        DragAndDropManipulatorSharedPtr dragManipulator = DragAndDropManipulator::create(domain);
        node->addInputManipulator(dragManipulator);
        movedMessageSubscription = node->addMessageHandler(DragAndDropManipulator::MovedMessage, bind(&InputManipulatorSnippet::onDragMoved, this, placeholders::_1));

Constructor & Destructor Documentation

◆ DragAndDropManipulator()

kanzi::DragAndDropManipulator::DragAndDropManipulator ( Domain * domain )

explicitprotected

Constructor.

Member Function Documentation

◆ makeEditorInfo()

static PropertyTypeEditorInfoSharedPtr kanzi::DragAndDropManipulator::makeEditorInfo ( )

static

◆ create()

static DragAndDropManipulatorSharedPtr kanzi::DragAndDropManipulator::create	(	Domain *	domain,
		string_view	= `""`
	)

inlinestatic

◆ setPressDuration()

void kanzi::DragAndDropManipulator::setPressDuration ( chrono::milliseconds pressDuration )

Set the duration in milliseconds of the long press before drag and drop starts. The default duration is 500ms.

◆ notifyTouchInside()

void kanzi::DragAndDropManipulator::notifyTouchInside ( const TouchInfo & touchInfo )

overrideprotectedvirtual

InputManipulator::notifyTouchInside implementation.

Reimplemented from kanzi::InputManipulator.

◆ notifyTouchOutside()

void kanzi::DragAndDropManipulator::notifyTouchOutside ( const TouchInfo & touchInfo )

overrideprotectedvirtual

InputManipulator::notifyTouchOutside implementation.

Reimplemented from kanzi::InputManipulator.

◆ onReset()

void kanzi::DragAndDropManipulator::onReset ( )

overrideprotectedvirtual

InputManipulator::onReset implementation.

Reimplemented from kanzi::InputManipulator.

◆ onCancel()

void kanzi::DragAndDropManipulator::onCancel ( )

overrideprotectedvirtual

Kanzi calls this when DragAndDropManipulator is canceled.

When you call this method it generates CanceledMessage.

Reimplemented from kanzi::InputManipulator.

◆ trackDragAndDrop()

void kanzi::DragAndDropManipulator::trackDragAndDrop ( const TouchInfo & touchInfo )

protected

Update the drag and drop gesture state with touch event.

◆ onLongPressCompleted()

void kanzi::DragAndDropManipulator::onLongPressCompleted ( )

protected

Timer callback for successful long press.

Member Data Documentation

◆ StartedMessage

MessageType<StartedMessageArguments> kanzi::DragAndDropManipulator::StartedMessage

static

Message type for notifying the beginning of the drag and drop gesture.

StartedMessage is generated after successful long press over the node area.

◆ MovedMessage

MessageType<MovedMessageArguments> kanzi::DragAndDropManipulator::MovedMessage

static

Message type for notifying update on position for the recognized gesture.

MovedMessage is generated when the tracked touch has moved while the drag is active.

◆ FinishedMessage

MessageType<FinishedMessageArguments> kanzi::DragAndDropManipulator::FinishedMessage

static

Message type for notifying end of the recognized drag and drop gesture.

FinishedMessage is generated when the tracked touch is released while the drag is active.

◆ CanceledMessage

MessageType<CanceledMessageArguments> kanzi::DragAndDropManipulator::CanceledMessage

static

Message type that notifies about the cancellation of the drag-and-drop gesture.

CanceledMessage is generated when DragAndDropManipulator is canceled.

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

kanzi/core.ui/input/drag_and_drop_manipulator.hpp

Classes

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Examples

Constructor & Destructor Documentation

◆ DragAndDropManipulator()

Member Function Documentation

◆ makeEditorInfo()

◆ create()

◆ setPressDuration()

◆ notifyTouchInside()

◆ notifyTouchOutside()

◆ onReset()

◆ onCancel()

◆ trackDragAndDrop()

◆ onLongPressCompleted()

Member Data Documentation

◆ StartedMessage

◆ MovedMessage

◆ FinishedMessage

◆ CanceledMessage