Application class is the base class for Kanzi applications. More...

#include <kanzi/core.ui/application/application.hpp>

Inheritance diagram for kanzi::Application:

Public Member Functions
	Application ()
	Constructs the application object. More...

Vector2	getRenderingAreaOffset () const
	Returns the translation that Kanzi uses as the arrange transformation of the default Screen node. More...

TextureSharedPtr	getRootCompositionTarget () const
	Returns the root composition target of the application. More...

StartupProfilerRegistry &	getStartupProfilerRegistry () const
	Gets the startup profiler registry. More...

void	initialize (const SystemProperties &systemProperties)
	Initializes the application to a consistent state. More...

void	initializeGL ()
	Initializes the graphics language subsystem. More...

bool	loadKzbFile (string_view fileName, bool setStartupPrefab)
	Loads a kzb file or multiple kzb files listed in a configuration file. More...

void	main (const SystemProperties &systemProperties)
	Application entry point. More...

void	resumeGL ()
	Resumes the graphics language subsystem. More...

void	setRenderingAreaOffset (Vector2 offset)
	Sets the translation that Kanzi uses as the arrange transformation of the default Screen node. More...

void	setRootCompositionTarget (TextureSharedPtr compositionTarget)
	Sets the root composition target of the application. More...

void	suspendGL ()
	Suspends the graphics language subsystem. More...

void	uninitialize ()
	Uninitializes the application. More...

void	uninitializeGL ()
	Uninitializes the graphics language subsystem. More...

	~Application () override
	Destructs the application object. More...

State modifiers.
void	pause ()
	Puts the application from the Running state to the Paused state. More...

void	resume ()
	Resumes the application from the Paused state to the Running state. More...

void	quit ()
	Quits the application. More...

Studio preview specific functions.
void	patchProject (uintmax_t byteCount, const byte *bytes)
	Applies a Kanzi Studio Preview patch. More...

Public Member Functions inherited from kanzi::Module
virtual void	destroy ()

virtual MetaclassContainer	getMetaclassesOverride ()

	Module ()

virtual void	registerDebugRenderingFunctions (DebugRenderRegistry &)
	Register the module debug rendering functions. More...

virtual void	registerMetadataOverride (ObjectFactory &)
	Register the rest of module metadata, such as loaders for types in module. More...

void	setDomain (Domain *domain)
	Set the domain. More...

Protected Member Functions
Initialization functions.
virtual void	initializeProperties (const SystemProperties &systemProperties)
	Loads the application properties, based on configuration file and command-line arguments. More...

virtual void	initializeSystem ()
	Initializes profiling, event sources, and graphics output. More...

virtual void	initializePlatform ()
	Initializes platform configuration. More...

virtual void	uninitializePlatform ()
	Unitializes platform configuration. More...

virtual void	initializeDomain ()
	Initializes Kanzi Domain and loads a kzb file. More...

virtual void	initializeMainLoopTasks ()
	Attaches the default tasks to the main loop scheduler. More...

void	applyMainLoopConfigs ()
	Applies the frame limit and idle-suspension configurations from the application properties to the main loop scheduler, and attaches event handles and preconditions. More...

void	setFontBackendProperties ()
	Applies the font backend properties from the application properties to the FontManager. More...

Input stage functions.
void	clearEventQueue ()
	Clears the event queue. More...

void	gatherEvents ()
	Gathers all input events from the event sources into the event queue. More...

void	handleApplicationEvents ()
	Executes the application-defined event handler on all events in the event queue. More...

virtual void	handleEvents (EventQueue &eventQueue)
	Executes the application-defined event handler on all events in the event queue. More...

void	handleGraphicsEvents ()
	Executes the event handler of the graphics subsystem. The events to handle are from the event queue. More...

void	handleInputManagerEvents ()
	Executes the event handler of the input subsystem. The events to handle are from the event queue. More...

User stage functions.
void	loadStartupKzb ()
	Instantiates and attaches the startup Screen node from the startup prefab. More...

void	progressDeploymentQueue ()
	Processes the deployment queue for asynchronous loading tasks. More...

void	updateRenderer (chrono::nanoseconds deltaTime)
	Advances renderer clock with time delta, and attaches active graphics output to it. More...

void	measurePerformance (chrono::nanoseconds deltaTime)
	Updates the calculation of the Application frame rate. More...

Layout stage functions.
void	adjustRenderingArea ()
	Sets the rendering area on the graphics output based on the size, orientation, and metrics. More...

void	layout ()
	Lays out the node tree. More...

Animate stage functions.
void	tickAnimations (chrono::nanoseconds deltaTime)
	Ticks all the active animations. More...

Render stage functions.
virtual void	render ()
	Renders the node tree. More...

void	renderPerformanceInfo ()
	Renders the Performance HUD. More...

void	clearAllRenderBuffers (ColorRGBA clearColor)
	Clears all render buffers. More...

Present stage functions.
void	present ()
	Updates the graphics output buffer with the rendered node tree. More...

Callbacks.
virtual void	onStartup ()
	Callback for the startup logic. More...

virtual void	onShutdown ()
	Callback for the shutdown logic. More...

virtual void	onConfigure (ApplicationProperties &configuration)
	Callback for configuring the application properties. More...

virtual void	onProjectLoaded ()
	Callback for initializations that use data from a kzb file. More...

virtual void	onUpdate (chrono::nanoseconds deltaTime)
	Callback for the update logic. More...

virtual void	onPointerInputEvent (const PointerEvent &pointerEvent)
	Callback for handling of input events from a pointing device, such as a mouse or touch screen. More...

virtual void	onKeyInputEvent (const KeyEvent &keyEvent)
	Callback for handling input events from keyboard. More...

virtual optional< chrono::nanoseconds >	onSuspend (chrono::nanoseconds remainingFrameAllotment)
	Callback for determining the duration of suspension in a main loop frame. More...

virtual void	onPause ()
	Kanzi calls this callback when the application main loop enters the Paused state. More...

virtual void	onResume ()
	Kanzi calls this callback when the application main loop returns from the Paused to the Running state. More...

virtual void	onResumeCheck ()
	Kanzi calls this callback for the event handling logic when the application main loop is in the Paused state. More...

Overrides.
virtual void	mainOverride (const SystemProperties &systemProperties)
	Override function for main(). More...

virtual void	initializeOverride (const SystemProperties &systemProperties)
	Override function for initialize(). More...

virtual void	uninitializeOverride ()
	Override function for uninitialize(). More...

virtual void	initializeGLOverride ()
	Override function for initializeGL(). More...

virtual void	uninitializeGLOverride ()
	Override function for uninitializeGL(). More...

virtual void	suspendGLOverride ()
	Override function for suspendGL(). More...

virtual void	resumeGLOverride ()
	Override function for resumeGL(). More...

virtual void	progressDeploymentQueueOverride ()
	Override function for progressDeploymentQueue(). More...

virtual void	setScreenOverride ()
	Override function for setScreen(). More...

Protected Member Functions inherited from kanzi::Module
virtual	~Module ()=default
	Destructor. More...

Protected Attributes
ApplicationProperties	m_applicationProperties
	Application properties. More...

KzuEngine *	m_engine
	Kanzi Engine instance. More...

MainLoopTaskToken	m_loadStartupKzbToken
	The token of LoadStartyKzb Main Loop Scheduler task. More...

MainLoopScheduler	m_mainLoopScheduler
	Main loop scheduler. More...

unique_ptr< PerformanceInfo >	m_performanceInfo
	Performance HUD information. More...

bool	m_projectLoaded
	Flag to be set when project has been loaded. More...

string	m_startupPrefabUrl
	URL of the startup prefab. More...

SystemProperties	m_systemProperties
	Container of command line parameters of the program. More...

Protected Attributes inherited from kanzi::Module
Domain *	m_domain
	The domain this module is registered to. More...

Friends
class	PreviewApplication

Accessors and mutators.
Domain *	getDomain () const
	Access domain. More...

Renderer3D *	getRenderer3D () const
	Access the renderer. More...

Node2DSharedPtr	getRoot () const
	Access the root node. More...

ScreenSharedPtr	getScreen () const
	Access the Screen node. More...

void	setScreen (ScreenSharedPtr screen)
	Sets, configures, and attaches the Screen node of the Application. More...

const MainLoopScheduler &	getMainLoopScheduler () const
	Access the associated MainLoopScheduler. More...

MainLoopScheduler &	getMainLoopScheduler ()
	Access the associated MainLoopScheduler. More...

ResourceManager *	getResourceManager () const
	Access resource manager. More...

KZ_DEPRECATED InputManager *	getInputManager () const
	Access input manager. More...

detail::MessageDispatcher *	getMessageDispatcher () const
	Access message dispatcher. More...

float	getFramesPerSecond () const
	Gets the frame rate of the application. More...

size_t	getGraphicsOutputCount () const
	Access graphics output count. More...

GraphicsOutputSharedPtr	getGraphicsOutput (size_t index=0) const
	Access graphics outputs. More...

template<typename Interface >
shared_ptr< Interface >	getGraphicsOutput (size_t index) const
	Query graphics output interfaces. More...

void	appendGraphicsOutput (GraphicsOutputSharedPtr graphicsOutput)
	Attach graphics output. More...

void	removeGraphicsOutput (size_t index=0)
	Remove graphics output. More...

size_t	getEventSourceCount () const
	Access event source count. More...

EventSourceSharedPtr	getEventSource (size_t index=0) const
	Access event sources. More...

void	appendEventSource (EventSourceSharedPtr eventSource)
	Attach event source to domain and register its event handle with main loop scheduler. More...

void	removeEventSource (size_t index=0)
	Remove event source. More...

MainLoopState	getState () const
	Access application state. More...

ApplicationProperties	getApplicationProperties () const
	Access application properties. More...

ApplicationProperties::PerformanceInfoLevel	getPerformanceInfoLevel () const
	Gets the Performance HUD information level. More...

void	setPerformanceInfoLevel (ApplicationProperties::PerformanceInfoLevel level)
	Sets the Performance HUD information level. More...

void	loadFontEngine (ApplicationProperties::FontEngine fontEngine)
	Loads the font engine for the font manager. More...

void	setAllowIndefiniteSleep (bool enabled)
	Sets or resets the flag that allows indefinite sleep. More...

void	setDeploymentQueueTimeBudget (chrono::nanoseconds budget)
	Sets the time budget used to deploy asynchronously loaded Resources per frame. More...

void	logStartupProfilingData () const
	Logs startup profiling data. More...

virtual bool	isToolPresent () const
	Indicates whether application is running in the Kanzi Studio Preview. More...

void	logGraphicsInformation ()
	Log graphics information based on application properties. More...

KZ_DEPRECATED KzuEngine *	getEngine () const
	Access Kanzi Engine. More...

PerformanceInfo &	acquirePerformanceInfo ()
	Acquire performance information object. More...

void	restoreNodeResources (Screen &screen)
	Restores node resources after application sleep by calling Node::restoreResources() recursively for the nodes in the tree. More...

Additional Inherited Members
Public Types inherited from kanzi::Module
typedef vector< const Metaclass * >	MetaclassContainer

typedef MetaclassContainer::iterator	MetaclassIterator

Detailed Description

Application class is the base class for Kanzi applications.

It implements the Kanzi main loop with help of MainLoopScheduler.

You can customize your application by overriding the virtual functions of the Application class.

You can also customize the main loop using the MainLoopScheduler, which you can access with getMainLoopScheduler(). The MainLoopScheduler lets you add or modify the tasks and stages of the main loop. Kanzi adds the default main loop tasks to the respective stages inside initializeMainLoopTasks().

This diagram shows the overall application control flow. Green items are virtual functions. Gray items are main loop stages. Dotted items are main loop callbacks.

Constructor & Destructor Documentation

kanzi::Application::Application ( )

explicit

Constructs the application object.

kanzi::Application::~Application ( )

override

Destructs the application object.

Member Function Documentation

void kanzi::Application::initialize ( const SystemProperties & systemProperties )

Initializes the application to a consistent state.

After constructing the application, this is the first function that the application framework calls. This function tries to read the file application.cfg. Do not call this function before the file system of the operating system has been initialized.

To change the default behavior, override initializeOverride().

Parameters

systemProperties Command line parameters of the program.

void kanzi::Application::initializeGL ( )

Initializes the graphics language subsystem.

The application framework calls this function before entering the program main loop, but after the application framework activates a GL context. It initializes OpenGL-related subsystems.

To change the default behavior, override initializeGLOverride().

void kanzi::Application::resumeGL ( )

Resumes the graphics language subsystem.

If you call suspendGL() during suspension, the application framework calls this function during application resume. This function deploys GPU resources that were undeployed during suspendGL().

To change the default behavior, override resumeGLOverride().

void kanzi::Application::main ( const SystemProperties & systemProperties )

Application entry point.

This high-level function implements the default initialization and the main loop. The application framework calls this function, except on callbacks-only systems.

To change the default behavior, override mainOverride().

Parameters

systemProperties Command line parameters of the program.

void kanzi::Application::uninitialize ( )

Uninitializes the application.

This is the last function that the application framework calls before destruction.

To change the default behavior, override uninitializeOverride().

void kanzi::Application::uninitializeGL ( )

Uninitializes the graphics language subsystem.

The application framework calls this function after exiting the program main loop, but before it deactivates a GL context. It undeploys all GPU resources.

To change the default behavior, override uninitializeGLOverride().

void kanzi::Application::suspendGL ( )

Suspends the graphics language subsystem.

The application framework calls this function during application suspension, on systems where the graphics language resources are not guaranteed to be retained until the application resumes. It undeploys all GPU resources and reschedules them for redeployment.

When your applications suspends, the GPU resources not stored in a kzb file become invalid. Destroy these resources and recreate them on resume. Make sure that after recreating a resource the pointers are correct. Kanzi automatically restores all other resources.

To change the default behavior, override suspendGLOverride().

void kanzi::Application::pause ( )

Puts the application from the Running state to the Paused state.

void kanzi::Application::resume ( )

Resumes the application from the Paused state to the Running state.

void kanzi::Application::quit ( )

Quits the application.

Domain* kanzi::Application::getDomain ( ) const

Access domain.

Returns: Pointer to domain.

Renderer3D* kanzi::Application::getRenderer3D ( ) const

Access the renderer.

Returns: Renderer3D pointer.

Node2DSharedPtr kanzi::Application::getRoot ( ) const

Access the root node.

Returns: Node shared pointer.

ScreenSharedPtr kanzi::Application::getScreen ( ) const

Access the Screen node.

Returns: Screen shared pointer.

void kanzi::Application::setScreen ( ScreenSharedPtr screen )

Sets, configures, and attaches the Screen node of the Application.

The default implementation associates the screen of the application with InputManager and FocusManager instances. You can configure the given screen in setScreenOverride().

If the Application already has a Screen node set, Kanzi detaches and releases that Screen, and sets the given screen node.

Kanzi calls this method automatically on loadStartupKzb().

See also: setScreenOverride()

Parameters

screen Shared pointer to the Screen node to set.

const MainLoopScheduler& kanzi::Application::getMainLoopScheduler ( ) const

Access the associated MainLoopScheduler.

Returns: Pointer to the MainLoopScheduler instance.

MainLoopScheduler& kanzi::Application::getMainLoopScheduler ( )

Access the associated MainLoopScheduler.

Returns: Pointer to the MainLoopScheduler instance.

ResourceManager* kanzi::Application::getResourceManager ( ) const

Access resource manager.

Returns: Resource manager pointer.

KZ_DEPRECATED InputManager* kanzi::Application::getInputManager ( ) const

Access input manager.

Returns: Input manager pointer.

Deprecated:: In Kanzi 3.9.6. Use Screen::getInputManager() instead.

detail::MessageDispatcher* kanzi::Application::getMessageDispatcher ( ) const

Access message dispatcher.

Returns: Message dispatcher pointer.

float kanzi::Application::getFramesPerSecond ( ) const

Gets the frame rate of the application.

To make sure that this function returns the correct frame rate, the main loop scheduler task MeasurePerformance calls measurePerformance() once per frame by default.

If you override the user stage tasks of the main loop scheduler, including the MeasurePerformance task, call measurePerformance() manually every frame. This way you make sure that getFramesPerSecond() returns valid values.

Returns: The frame rate in frames per second.

See also: measurePerformance()

Since: Kanzi 3.9.6

size_t kanzi::Application::getGraphicsOutputCount ( ) const

Access graphics output count.

Returns: Number of attached graphics outputs.

GraphicsOutputSharedPtr kanzi::Application::getGraphicsOutput ( size_t index = 0 ) const

Access graphics outputs.

Parameters

index Index of the graphics output to access.

Returns: Shared pointer to the specified graphics output.

template<typename Interface >

shared_ptr<Interface> kanzi::Application::getGraphicsOutput ( size_t index ) const

inline

Query graphics output interfaces.

Template Parameters

Interface Interface of the graphics output to query.

Parameters

index Index of the graphics output to query.

Returns: Shared pointer to the specified graphics output interface, or nullptr if the interface is not supported.

void kanzi::Application::appendGraphicsOutput ( GraphicsOutputSharedPtr graphicsOutput )

Attach graphics output.

Parameters

graphicsOutput Shared pointer to the graphics output to attach.

void kanzi::Application::removeGraphicsOutput ( size_t index = 0 )

Remove graphics output.

Parameters

index Index of the graphics output to remove.

size_t kanzi::Application::getEventSourceCount ( ) const

Access event source count.

Returns: Number of attached event sources.

EventSourceSharedPtr kanzi::Application::getEventSource ( size_t index = 0 ) const

Access event sources.

Parameters

index Index of the event source to access.

Returns: Shared pointer to the specified event source.

void kanzi::Application::appendEventSource ( EventSourceSharedPtr eventSource )

Attach event source to domain and register its event handle with main loop scheduler.

To attach event source to domain without registering event handle, use Domain::appendEventSource(). To register event handle with main loop scheduler without attaching to domain, use MainLoopScheduler::setInputEventHandle().

Parameters

eventSource Shared pointer to the event source to attach.

void kanzi::Application::removeEventSource ( size_t index = 0 )

Remove event source.

Parameters

index Index of the event source to remove.

MainLoopState kanzi::Application::getState ( ) const

Access application state.

Returns: Current application state.

ApplicationProperties kanzi::Application::getApplicationProperties ( ) const

Access application properties.

Returns: Current application properties.

ApplicationProperties::PerformanceInfoLevel kanzi::Application::getPerformanceInfoLevel ( ) const

inline

Gets the Performance HUD information level.

If the Performance HUD information level is not ApplicationProperties::PerformanceInfoLevelDisabled, Kanzi draws the Performance HUD after calling onPostRender().

Returns: Returns the Performance HUD information level.

void kanzi::Application::setPerformanceInfoLevel ( ApplicationProperties::PerformanceInfoLevel level )

inline

Sets the Performance HUD information level.

This is equal to the application configuration ApplicationProperties::PerformanceInfoLevel option.

Parameters

level

- To turn off the Performance HUD, use ApplicationProperties::PerformanceInfoLevelDisabled (0). The default value.

To display only framerate, use ApplicationProperties::PerformanceInfoLevelFPS (1).
To display additional information about rendering batches, use ApplicationProperties::PerformanceInfoLevelFull (2).

void kanzi::Application::loadFontEngine ( ApplicationProperties::FontEngine fontEngine )

Loads the font engine for the font manager.

Parameters

fontEngine The font engine that the font manager uses.

void kanzi::Application::setAllowIndefiniteSleep ( bool enabled )

inline

Sets or resets the flag that allows indefinite sleep.

Parameters

enabled

- To enable indefinite sleep, set to true.

To always wake up in frame time, set to false.

void kanzi::Application::setDeploymentQueueTimeBudget ( chrono::nanoseconds budget )

inline

Sets the time budget used to deploy asynchronously loaded Resources per frame.

This does not guarantee that the work will be completed within the budget, just that no new items will be started after the budget has expired. At a minimum, one item will be processed each frame if it exists.

Parameters

budget Amount of time to spend processing Deployment Queue items per frame.

void kanzi::Application::patchProject	(	uintmax_t	byteCount,
		const byte *	bytes
	)

Applies a Kanzi Studio Preview patch.

Kanzi Studio Preview uses this function internally.

Parameters

byteCount	Size of kzb file.
bytes	Pointer to the contents of the kzb file.

StartupProfilerRegistry& kanzi::Application::getStartupProfilerRegistry ( ) const

inline

Gets the startup profiler registry.

Returns: The reference to the startup profiler registry.

bool kanzi::Application::loadKzbFile	(	string_view	fileName,
		bool	setStartupPrefab
	)

Loads a kzb file or multiple kzb files listed in a configuration file.

Parameters

fileName	Name of the kzb file to load or the name of the configuration file from which to read the names of kzb files to load.
setStartupPrefab	Whether to set the startup prefab of the loaded kzb file as the startup prefab of the application. When loading multiple kzb files, Kanzi uses the startup prefab from the kzb file it loads last.

Returns: If loading the kzb file or files succeeded, true, otherwise false.

Since: Kanzi 3.9.6

void kanzi::Application::setRenderingAreaOffset ( Vector2 offset )

Sets the translation that Kanzi uses as the arrange transformation of the default Screen node.

Parameters

offset The translation that Kanzi uses as the arrange transformation of the default Screen node.

Since: Kanzi 3.9.6

Vector2 kanzi::Application::getRenderingAreaOffset ( ) const

Returns the translation that Kanzi uses as the arrange transformation of the default Screen node.

Returns: The translation that Kanzi uses as the arrange transformation of the default Screen node.

Since: Kanzi 3.9.6

void kanzi::Application::setRootCompositionTarget ( TextureSharedPtr compositionTarget )

Sets the root composition target of the application.

Parameters

compositionTarget The composition target texture to use.

Since: Kanzi 3.9.6

TextureSharedPtr kanzi::Application::getRootCompositionTarget ( ) const

Returns the root composition target of the application.

Returns: The root composition target of the application. If the application does not have a root composition target, returns an empty pointer.

Since: Kanzi 3.9.6

virtual void kanzi::Application::initializeProperties ( const SystemProperties & systemProperties )

protectedvirtual

Loads the application properties, based on configuration file and command-line arguments.

Parameters

systemProperties Command line parameters of the program.

virtual void kanzi::Application::initializeSystem ( )

protectedvirtual

Initializes profiling, event sources, and graphics output.

virtual void kanzi::Application::initializePlatform ( )

protectedvirtual

Initializes platform configuration.

virtual void kanzi::Application::uninitializePlatform ( )

protectedvirtual

Unitializes platform configuration.

virtual void kanzi::Application::initializeDomain ( )

protectedvirtual

Initializes Kanzi Domain and loads a kzb file.

virtual void kanzi::Application::initializeMainLoopTasks ( )

inlineprotectedvirtual

Attaches the default tasks to the main loop scheduler.

void kanzi::Application::applyMainLoopConfigs ( )

protected

Applies the frame limit and idle-suspension configurations from the application properties to the main loop scheduler, and attaches event handles and preconditions.

void kanzi::Application::setFontBackendProperties ( )

protected

Applies the font backend properties from the application properties to the FontManager.

Since: Kanzi 3.9.4

void kanzi::Application::clearEventQueue ( )

protected

Clears the event queue.

void kanzi::Application::gatherEvents ( )

protected

Gathers all input events from the event sources into the event queue.

void kanzi::Application::handleApplicationEvents ( )

protected

Executes the application-defined event handler on all events in the event queue.

See Application::handleEvents.

virtual void kanzi::Application::handleEvents ( EventQueue & eventQueue )

protectedvirtual

Executes the application-defined event handler on all events in the event queue.

Parameters

eventQueue Reference to the event queue for user input and window events.

void kanzi::Application::handleGraphicsEvents ( )

protected

Executes the event handler of the graphics subsystem. The events to handle are from the event queue.

void kanzi::Application::handleInputManagerEvents ( )

protected

Executes the event handler of the input subsystem. The events to handle are from the event queue.

void kanzi::Application::loadStartupKzb ( )

protected

Instantiates and attaches the startup Screen node from the startup prefab.

If a startup kzb file is not set, or the startup Screen node is not set, creates the default Screen node. Kanzi calls this function automatically at application startup.

void kanzi::Application::progressDeploymentQueue ( )

protected

Processes the deployment queue for asynchronous loading tasks.

By default this function processes every frame a single item from the deployment queue of background loading tasks.

To change the default behavior, override progressDeploymentQueueOverride().

void kanzi::Application::updateRenderer ( chrono::nanoseconds deltaTime )

protected

Advances renderer clock with time delta, and attaches active graphics output to it.

Parameters

deltaTime Time in nanoseconds elapsed since the previous frame.

void kanzi::Application::measurePerformance ( chrono::nanoseconds deltaTime )

protected

Updates the calculation of the Application frame rate.

To calculate the frame rate correctly, Kanzi must call this function once per frame. The default main loop scheduler task MeasurePerformance does this.

Parameters

deltaTime Time in nanoseconds elapsed between the start of the previous frame and the start of the current frame.

void kanzi::Application::adjustRenderingArea ( )

protected

Sets the rendering area on the graphics output based on the size, orientation, and metrics.

void kanzi::Application::layout ( )

protected

Lays out the node tree.

void kanzi::Application::tickAnimations ( chrono::nanoseconds deltaTime )

protected

Ticks all the active animations.

Parameters

deltaTime Time in nanoseconds since the previous frame.

virtual void kanzi::Application::render ( )

protectedvirtual

Renders the node tree.

void kanzi::Application::renderPerformanceInfo ( )

protected

Renders the Performance HUD.

void kanzi::Application::clearAllRenderBuffers ( ColorRGBA clearColor )

protected

Clears all render buffers.

void kanzi::Application::present ( )

protected

Updates the graphics output buffer with the rendered node tree.

virtual void kanzi::Application::onStartup ( )

protectedvirtual

Callback for the startup logic.

Kanzi calls this function immediately after the application initialization.

virtual void kanzi::Application::onShutdown ( )

protectedvirtual

Callback for the shutdown logic.

Kanzi calls this function immediately before the application un-initialization.

virtual void kanzi::Application::onConfigure ( ApplicationProperties & configuration )

protectedvirtual

Callback for configuring the application properties.

Kanzi calls this callback before it reads the application.cfg and before it initializes the graphics subsystem.

Parameters

configuration Allows modification of the application properties.

See also: ApplicationProperties, NativeWindowProperties, KzsSurfaceProperties, EventSourceProperties, PerformanceInfoProperties, ApplicationProperties::FontEngine

Reimplemented in kanzi::ExampleApplication.

virtual void kanzi::Application::onProjectLoaded ( )

protectedvirtual

Callback for initializations that use data from a kzb file.

Kanzi calls this function right after it loads a kzb file.

virtual void kanzi::Application::onUpdate ( chrono::nanoseconds deltaTime )

protectedvirtual

Callback for the update logic.

Kanzi calls this function every frame in the User stage of the main loop.

Parameters

deltaTime Time in nanoseconds elapsed since the previous frame.

Deprecated:: In Kanzi 3.9. Insert a task into MainLoopScheduler UserStage instead.

virtual void kanzi::Application::onPointerInputEvent ( const PointerEvent & pointerEvent )

protectedvirtual

Callback for handling of input events from a pointing device, such as a mouse or touch screen.

Kanzi calls this function inside the Input stage of the main loop.

Parameters

pointerEvent Reference to the event.

virtual void kanzi::Application::onKeyInputEvent ( const KeyEvent & keyEvent )

protectedvirtual

Callback for handling input events from keyboard.

Kanzi calls this function inside the Input stage of the main loop.

Parameters

keyEvent Reference to the event.

Reimplemented in kanzi::ExampleApplication.

virtual optional<chrono::nanoseconds> kanzi::Application::onSuspend ( chrono::nanoseconds remainingFrameAllotment )

protectedvirtual

Callback for determining the duration of suspension in a main loop frame.

Kanzi calls this function when the main loop decides to enter suspension.

Parameters

remainingFrameAllotment Time remaining in the current frame based on the configured frame limit and time elapsed since its start.

Returns

Default implementation calculates appropriate timeout based on active animations, timers, and resources waiting for deployment. An override must choose between one of these returns:

Return nullopt for an indefinite suspend.
Return a different definite timeout length in chrono::nanoseconds().
Return 0 (chrono::nanoseconds) to cancel the suspend.

virtual void kanzi::Application::onPause ( )

protectedvirtual

Kanzi calls this callback when the application main loop enters the Paused state.

virtual void kanzi::Application::onResume ( )

protectedvirtual

Kanzi calls this callback when the application main loop returns from the Paused to the Running state.

virtual void kanzi::Application::onResumeCheck ( )

protectedvirtual

Kanzi calls this callback for the event handling logic when the application main loop is in the Paused state.

virtual void kanzi::Application::mainOverride ( const SystemProperties & systemProperties )

protectedvirtual

Override function for main().

Parameters

systemProperties Command line parameters of the program.

virtual void kanzi::Application::initializeOverride ( const SystemProperties & systemProperties )

protectedvirtual

Override function for initialize().

Parameters

systemProperties Command line parameters of the program.

virtual void kanzi::Application::uninitializeOverride ( )

protectedvirtual

Override function for uninitialize().

virtual void kanzi::Application::initializeGLOverride ( )

protectedvirtual

Override function for initializeGL().

virtual void kanzi::Application::uninitializeGLOverride ( )

protectedvirtual

Override function for uninitializeGL().

virtual void kanzi::Application::suspendGLOverride ( )

protectedvirtual

Override function for suspendGL().

virtual void kanzi::Application::resumeGLOverride ( )

protectedvirtual

Override function for resumeGL().

virtual void kanzi::Application::progressDeploymentQueueOverride ( )

protectedvirtual

Override function for progressDeploymentQueue().

virtual void kanzi::Application::setScreenOverride ( )

protectedvirtual

Override function for setScreen().

The default implementation associates the screen of the application with InputManager and FocusManager instances. To disable input and focus management on the application screen, override this method to clear the input and focus managers from the application screen.

See also: Screen::setInputManager(), Screen::setFocusManager()

void kanzi::Application::logStartupProfilingData ( ) const

protected

Logs startup profiling data.

virtual bool kanzi::Application::isToolPresent ( ) const

inlineprotectedvirtual

Indicates whether application is running in the Kanzi Studio Preview.

Returns: If the application is running in the Kanzi Studio Preview, returns true, otherwise false.

void kanzi::Application::logGraphicsInformation ( )

protected

Log graphics information based on application properties.

KZ_DEPRECATED KzuEngine* kanzi::Application::getEngine ( ) const

protected

Access Kanzi Engine.

Returns: Returns an instance of Kanzi Engine.

Deprecated:: In Kanzi 3.9.6. Use the functionality provided by the Application, Screen, and ResourceManager classes.

PerformanceInfo& kanzi::Application::acquirePerformanceInfo ( )

protected

Acquire performance information object.

If performance information object does not exist, this function creates it.

void kanzi::Application::restoreNodeResources ( Screen & screen )

protected

Restores node resources after application sleep by calling Node::restoreResources() recursively for the nodes in the tree.

Parameters

screen The Screen of the node tree for which to restore resources.

See also: Node::restoreResources()

Since: Kanzi 3.9.6

Friends And Related Function Documentation

friend class PreviewApplication

friend

Member Data Documentation

SystemProperties kanzi::Application::m_systemProperties

protected

Container of command line parameters of the program.

ApplicationProperties kanzi::Application::m_applicationProperties

protected

Application properties.

KzuEngine* kanzi::Application::m_engine

mutableprotected

Kanzi Engine instance.

Deprecated:: In Kanzi 3.9.6. Use the functionality provided by the Application, Screen, and ResourceManager classes.

unique_ptr<PerformanceInfo> kanzi::Application::m_performanceInfo

protected

Performance HUD information.

bool kanzi::Application::m_projectLoaded

protected

Flag to be set when project has been loaded.

MainLoopScheduler kanzi::Application::m_mainLoopScheduler

protected

Main loop scheduler.

MainLoopTaskToken kanzi::Application::m_loadStartupKzbToken

protected

The token of LoadStartyKzb Main Loop Scheduler task.

string kanzi::Application::m_startupPrefabUrl

protected

URL of the startup prefab.

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

kanzi/core.ui/application/application.hpp

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Accessors and mutators.

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation