Use node effects to apply post-processing effects to 2D nodes. More...

#include <kanzi/core.ui/node/node_effect2d.hpp>

Inheritance diagram for kanzi::NodeEffect2D:

Public Member Functions
NodeEffectRenderer2DUniquePtr	createRenderer ()
	Creates a renderer instance. More...

unsigned int	getEffectPaddingChangeCounter () const
	Gets the effect quad change counter. More...

Vector4	getEffectQuadPadding () const
	Gets the effect quad padding. More...

Vector2	getEffectQuadPaddingOffset () const
	Gets the effect quad offset relative relative to the top-left corner of the node. More...

Vector2	getEffectQuadPaddingSize () const
	Gets the effect quad padding size. More...

NodeEffectRenderer2D *	getRendererInstance () const
	Gets a pointer to NodeEffectRenderer2D instance or null pointer if none exists. More...

bool	isAlphaRequired () const
	Indicates whether the effect requires alpha channel for the result. More...

bool	isRenderingRequired ()
	Indicates whether the effect requires rendering. More...

void	unregisterEffectRenderer (NodeEffectRenderer2D *effectRenderer)
	Unregister effect renderer. More...

	~NodeEffect2D ()

Public Member Functions inherited from kanzi::Resource
virtual unsigned int	getCPUMemoryUsage () const
	Function for getting the memory usage of a resource. More...

const string &	getName () const
	Gets the resource name. More...

const string &	getUrl () const
	Gets the resource URL. More...

bool	isKeepAlive () const
	Tells if the resource has keep alive flag set. More...

void	reload ()

void	reloadFromFile (string_view filePath)

void	reloadFromKzb (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)

void	setKeepAlive (bool keepAlive)
	Sets the keep alive flag. More...

void	setUrl (string_view url)
	Sets the resource URL. More...

	~Resource () 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 (flat_set< AbstractPropertyType > *keepProperties)
	Remove all KZB properties that are not included in a given set. More...

void	removeKzbProperties ()
	Remove all KZB properties. More...

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 ()

Protected Member Functions
virtual NodeEffectRenderer2DUniquePtr	createRendererOverride ()=0
	Creates a renderer instance. More...

virtual void	initializeRendererOverride ()=0
	Initializes a previously created renderer instance. More...

virtual bool	isRenderingRequiredOverride ()
	Implementation-dependent check on whether effect rendering is required. More...

	NodeEffect2D (Domain *domain, string_view name)
	Constructor. More...

void	setAlphaRequired (bool required)
	Sets the framebuffer alpha channel requirements of the effect. More...

void	setEffectQuadPadding (float left, float right, float top, float bottom)
	Sets the padding required by the effect around the node bounds during the rendering of the effect. More...

Protected Member Functions inherited from kanzi::Resource
virtual unsigned int	getCPUMemoryUsageOverride () const

virtual void	reloadFromFileOverride (string_view filePath)

virtual void	reloadFromKzbOverride (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)

virtual void	reloadOverride ()

	Resource (Domain *domain, string_view name)
	Constructor. 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 &storagePtr, PropertyNotificationReason reason)
	Notifies all property handlers on a property storage. More...

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::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

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...

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

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

Detailed Description

Use node effects to apply post-processing effects to 2D nodes.

Examples

To create an effect:

    // An effect that is assigned to a 2D node is an effect prefab.
    // Before you can construct an effect prefab, you must create an effect template.
    // This example creates an effect template for the ShadowEffect2D effect prefab.
    NodeEffectTemplate2DSharedPtr shadowEffectTemplate =
        NodeEffectTemplate2D::create(ShadowEffect2D::getStaticMetaclass()->getName(), "DropShadow");
    // Create a node effect prefab from the effect template.
    NodeEffectPrefab2DSharedPtr shadowEffectPrefab =
        NodeEffectPrefab2D::create(getDomain(), "DropShadow prefab", shadowEffectTemplate);

To assign an effect to a 2D node:

// To assign an effect prefab to a 2D node, set the Node2D::EffectPrefabProperty.

node2d->setProperty(Node2D::EffectPrefabProperty, shadowEffectPrefab);

// To assign an effect prefab to a 2D node, call the Node2D::setEffectPrefab method.

node2d->setEffectPrefab(shadowEffectPrefab);

To set the effect properties:

    // Create an effect template.
    NodeEffectTemplate2DSharedPtr shadowEffectTemplate =
        NodeEffectTemplate2D::create(ShadowEffect2D::getStaticMetaclass()->getName(), "DropShadow");
    // Set the value of the AngleProperty in the template. This value serves as the default value
    // of the property in instances of the effect prefab.
    shadowEffectTemplate->addPropertyValue(ShadowEffect2D::AngleProperty, Variant(35.f)); 
    // Create an effect prefab.
    NodeEffectPrefab2DSharedPtr shadowEffectPrefab =
        NodeEffectPrefab2D::create(getDomain(), "DropShadow prefab", shadowEffectTemplate);
    // Assign the effect to a 2D node.
    node2d->setEffectPrefab(shadowEffectPrefab);
    // Get the node-specific effect instance created from the assigned prefab.
    ShadowEffect2DSharedPtr shadowEffect = dynamic_pointer_cast<ShadowEffect2D>(node2d->getEffect());
    // Set the shadow distance to 15 pixels for this node only. This overrides
    // the property default value defined by the ShadowEffect2D metaclass.
    shadowEffect->setDistance(15.f);
    // Set the direction of the shadow to 55 degrees relative to the positive x axis.
    // This overrides the default value of 35 degrees set in the shadow effect template.
    shadowEffect->setAngle(55.f);

To set multiple nodes to use the same effect:

    // Create an effect template.
    NodeEffectTemplate2DSharedPtr shadowEffectTemplate =
        NodeEffectTemplate2D::create(ShadowEffect2D::getStaticMetaclass()->getName(), "DropShadow");
    // Create an effect prefab from the effect template.
    NodeEffectPrefab2DSharedPtr shadowEffectPrefab =
        NodeEffectPrefab2D::create(getDomain(), "DropShadow prefab", shadowEffectTemplate);
    // Set two nodes to use the same effect prefab. The nodes create separate instances
    // of NodeEffect2D but share the same NodeEffectPrefab2D instance.
    node1->setEffectPrefab(shadowEffectPrefab);
    node2->setEffectPrefab(shadowEffectPrefab);

To enable and disable an effect:

    // Enable an effect on a 2D node by assigning an effect prefab.
    node2d->setEffectPrefab(shadowEffectPrefab);
    // Disable an effect by assigning a nullptr or an empty shared pointer.
    node2d->setEffectPrefab(nullptr);

To create an effect type:

// To create an effect resource type, inherit a new class from NodeEffect2D
// and define a new associated metaclass. Each effect resource class must
// have an associated renderer class inherited from NodeEffectRenderer2D.
class EmptyEffectRenderer2D;
using EmptyEffectRenderer2DUniquePtr = unique_ptr<EmptyEffectRenderer2D>;
class EmptyEffect2D;
using EmptyEffect2DSharedPtr = shared_ptr<EmptyEffect2D>;
// EmptyEffect2D defines a new effect that defines no properties
// nor padding.
class EmptyEffect2D : public NodeEffect2D
{
public:
    KZ_METACLASS_BEGIN(EmptyEffect2D, NodeEffect2D, "Kanzi.EmptyEffect2D")
    KZ_METACLASS_END()
    // Create an instance of EmptyEffect2D.
    static EmptyEffect2DSharedPtr create(Domain* domain, string_view name)
    {
        return make_polymorphic_shared_ptr<Resource>(new EmptyEffect2D(domain, name));
    }
protected:
    // Constructor.
    explicit EmptyEffect2D(Domain* domain, string_view name) :
        NodeEffect2D(domain, name)
    {
    }
    // NodeEffect2D::createRendererOverride implementation.
    NodeEffectRenderer2DUniquePtr createRendererOverride() override;
    // NodeEffect2D::initializeRendererOverride implementation.
    void initializeRendererOverride() override
    {
    }
};
// EmptyEffectRenderer2D implements the rendering of the effect.
// Because this example effect does not render anything, Kanzi renders
// the original node as is.
class EmptyEffectRenderer2D : public NodeEffectRenderer2D
{
public:
    // Creates an instance of MinimalEffectRenderer2D. Never call this 
    // function directly. Instead, use NodeEffect2D::createRenderer().
    static EmptyEffectRenderer2DUniquePtr create(EmptyEffect2DSharedPtr effect)
    {
        return unique_ptr<EmptyEffectRenderer2D>(new EmptyEffectRenderer2D(effect));
    }
private:
    // Constructor.
    explicit EmptyEffectRenderer2D(EmptyEffect2DSharedPtr effect) :
        NodeEffectRenderer2D(effect)
    {
    }
    // Implementation of NodeEffectRenderer2D::beginEffectOverride.
    void beginEffectOverride(Renderer3D& /*renderer*/, CompositionStack& /*compositionStack*/, CompositionManager* /*compositionManager*/,
        const Matrix3x3& /*worldTransform*/, Vector2 /*requiredSize*/, bool /*alphaRequired*/, bool /*depthRequired*/, bool /*stencilRequired*/) override
    {
    }
    // Implementation of NodeEffectRenderer2D::endEffectOverride.
    void endEffectOverride(Renderer3D& /*renderer*/, CompositionStack& /*compositionStack*/, CompositionManager* /*compositionManager*/) override
    {
    }
    // Implementation of NodeEffectRenderer2D::blitEffectOverride.
    void blitEffectOverride(Renderer3D& /*renderer*/, CompositionStack& /*compositionStack*/, CompositionManager* /*compositionManager*/,
        QuadDescription& /*effectQuad*/, const Matrix3x3& /*transform*/, const Matrix4x4* /*perspectiveMatrix*/,
        const Matrix4x4* /*projectionMatrix*/, int /*blendMode*/, bool /*needsClear*/) override
    {
    }
    // Implementation of NodeEffectRenderer2D::restoreResourcesOverride.
    virtual void restoreResourcesOverride() override
    {
    }
};
NodeEffectRenderer2DUniquePtr EmptyEffect2D::createRendererOverride()
{
    return EmptyEffectRenderer2D::create(static_pointer_cast<EmptyEffect2D>(shared_from_this()));
}

See also: NodeEffectPrefab2D, NodeEffectTemplate2D

Since: Kanzi 3.9.0

Constructor & Destructor Documentation

◆ ~NodeEffect2D()

kanzi::NodeEffect2D::~NodeEffect2D ( )

◆ NodeEffect2D()

kanzi::NodeEffect2D::NodeEffect2D	(	Domain *	domain,
		string_view	name
	)

explicitprotected

Constructor.

Parameters

domain	Domain to use.
name	Resource name.

Member Function Documentation

◆ createRenderer()

NodeEffectRenderer2DUniquePtr kanzi::NodeEffect2D::createRenderer ( )

Creates a renderer instance.

Only single renderer instance may exist.

See also: NodeEffect2D::createRendererOverride.

Returns: NodeEffectRenderer2D instance.

◆ getEffectQuadPadding()

Vector4 kanzi::NodeEffect2D::getEffectQuadPadding ( ) const

inline

Gets the effect quad padding.

Returns: Effect quad padding as Vector4 where padding parameters are assigned as Vector4(left, right, top, bottom).

◆ getEffectQuadPaddingOffset()

Vector2 kanzi::NodeEffect2D::getEffectQuadPaddingOffset ( ) const

inline

Gets the effect quad offset relative relative to the top-left corner of the node.

Returns: Effect quad offset as Vector2.

◆ getEffectQuadPaddingSize()

Vector2 kanzi::NodeEffect2D::getEffectQuadPaddingSize ( ) const

inline

Gets the effect quad padding size.

Effect quad padding size defines how much the node quad size increases because of the effect padding.

Returns: Effect quad padding size as Vector2.

◆ getEffectPaddingChangeCounter()

unsigned int kanzi::NodeEffect2D::getEffectPaddingChangeCounter ( ) const

inline

Gets the effect quad change counter.

Kanzi updates the effect quad change count when the effect padding changes.

Returns: Effect padding change counter.

◆ isAlphaRequired()

bool kanzi::NodeEffect2D::isAlphaRequired ( ) const

inline

Indicates whether the effect requires alpha channel for the result.

◆ unregisterEffectRenderer()

void kanzi::NodeEffect2D::unregisterEffectRenderer ( NodeEffectRenderer2D * effectRenderer )

inline

Unregister effect renderer.

Effect renderer is automatically registered by NodeEffect2D::createRenderer() and unregistered by the NodeEffectRenderer2D destructor.

Parameters

effectRenderer Effect renderer pointer to unregister.

◆ isRenderingRequired()

bool kanzi::NodeEffect2D::isRenderingRequired ( )

inline

Indicates whether the effect requires rendering.

Some effect property values can eliminate the need to render the effect. Typically this reflects a situation where the effect has no visible impact.

Returns: If effect rendering is required true, otherwise false.

Since: Kanzi 3.9.5

◆ getRendererInstance()

NodeEffectRenderer2D* kanzi::NodeEffect2D::getRendererInstance ( ) const

inline

Gets a pointer to NodeEffectRenderer2D instance or null pointer if none exists.

Returns: If the NodeEffectRenderer2D instance exists, a pointer to it, otherwise null pointer.

◆ createRendererOverride()

virtual NodeEffectRenderer2DUniquePtr kanzi::NodeEffect2D::createRendererOverride ( )

protectedpure virtual

Creates a renderer instance.

Only single renderer instance may exist.

Returns: NodeEffectRenderer2D instance.

Implemented in kanzi::OutlineEffect2D, kanzi::MaskEffect2D, kanzi::ShadowEffect2D, and kanzi::BlurEffect2D.

◆ initializeRendererOverride()

virtual void kanzi::NodeEffect2D::initializeRendererOverride ( )

protectedpure virtual

Initializes a previously created renderer instance.

Implemented in kanzi::OutlineEffect2D, kanzi::MaskEffect2D, kanzi::ShadowEffect2D, and kanzi::BlurEffect2D.

◆ isRenderingRequiredOverride()

virtual bool kanzi::NodeEffect2D::isRenderingRequiredOverride ( )

protectedvirtual

Implementation-dependent check on whether effect rendering is required.

The default implementation always returns true. Individual effects must override this function to turn themselves off.

Returns: If effect rendering is required true, otherwise false.

Since: Kanzi 3.9.5

Reimplemented in kanzi::OutlineEffect2D, kanzi::ShadowEffect2D, and kanzi::BlurEffect2D.

◆ setEffectQuadPadding()

void kanzi::NodeEffect2D::setEffectQuadPadding	(	float	left,
		float	right,
		float	top,
		float	bottom
	)

inlineprotected

Sets the padding required by the effect around the node bounds during the rendering of the effect.

Kanzi accounts for the effect quad padding when determining the visibility of the node.

◆ setAlphaRequired()

void kanzi::NodeEffect2D::setAlphaRequired ( bool required )

inlineprotected

Sets the framebuffer alpha channel requirements of the effect.

Parameters

required If the effect rendering requires alpha channel and blending, true, otherwise false.

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

kanzi/core.ui/node/node_effect2d.hpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Examples

Constructor & Destructor Documentation

◆ ~NodeEffect2D()

◆ NodeEffect2D()

Member Function Documentation

◆ createRenderer()

◆ getEffectQuadPadding()

◆ getEffectQuadPaddingOffset()

◆ getEffectQuadPaddingSize()

◆ getEffectPaddingChangeCounter()

◆ isAlphaRequired()

◆ unregisterEffectRenderer()

◆ isRenderingRequired()

◆ getRendererInstance()

◆ createRendererOverride()

◆ initializeRendererOverride()

◆ isRenderingRequiredOverride()

◆ setEffectQuadPadding()

◆ setAlphaRequired()