UI subsystem. Manages the graphical user interface. More...

#include <Urho3D/UI/UI.h>

Inheritance diagram for Urho3D::UI:

Classes
struct	DragData
	Data structure used to represent the drag data associated to a UIElement. More...

Public Member Functions
	UI (Context *context)
	Construct.

	~UI () override
	Destruct.

void	SetCursor (Cursor *cursor)

void	SetFocusElement (UIElement *element, bool byKey=false)
	Set focused UI element.

bool	SetModalElement (UIElement *modalElement, bool enable)

void	Clear ()
	Clear the UI (excluding the cursor).

void	Update (float timeStep)
	Update the UI logic. Called by HandlePostUpdate().

void	RenderUpdate ()
	Update the UI for rendering. Called by HandleRenderUpdate().

void	Render ()
	Render the UI batches. Returns true if call rendered anything. Rendering succeeds only once per frame.

void	DebugDraw (UIElement *element)
	Debug draw a UI element.

SharedPtr< UIElement >	LoadLayout (Deserializer &source, XMLFile *styleFile=nullptr)
	Load a UI layout from an XML file. Optionally specify another XML file for element style. Return the root element.

SharedPtr< UIElement >	LoadLayout (XMLFile file, XMLFile styleFile=nullptr)
	Load a UI layout from an XML file. Optionally specify another XML file for element style. Return the root element.

bool	SaveLayout (Serializer &dest, UIElement *element)
	Save a UI layout to an XML file. Return true if successful.

void	SetClipboardText (const ea::string &text)

void	SetDoubleClickInterval (float interval)

void	SetMaxDoubleClickDistance (float distPixels)

void	SetDragBeginInterval (float interval)

void	SetDragBeginDistance (int pixels)

void	SetDefaultToolTipDelay (float delay)

void	SetMaxFontTextureSize (int size)

void	SetNonFocusedMouseWheel (bool nonFocusedMouseWheel)

void	SetUseSystemClipboard (bool enable)

void	SetUseScreenKeyboard (bool enable)

void	SetUseMutableGlyphs (bool enable)

void	SetForceAutoHint (bool enable)

void	SetFontHintLevel (FontHintLevel level)

void	SetFontSubpixelThreshold (float threshold)

void	SetFontOversampling (int oversampling)

void	SetScale (float scale)

void	SetWidth (float width)
	Scale UI to the specified width in pixels.

void	SetHeight (float height)
	Scale UI to the specified height in pixels.

void	SetCustomSize (const IntVector2 &size)

void	SetCustomSize (int width, int height)
	Set custom size of the root element.

UIElement *	GetRoot () const

void	SetRoot (UIElement *root)
	Sets new root UI element.

UIElement *	GetRootModalElement () const

void	SetRootModalElement (UIElement *rootModal)
	Sets new root UI element for modals.

Cursor *	GetCursor () const

IntVector2	GetUICursorPosition () const

IntVector2	GetSystemCursorPosition () const

UIElement *	GetElementAt (const IntVector2 &position, bool enabledOnly=true)

UIElement *	GetElementAt (int x, int y, bool enabledOnly=true)
	Return UI element at global screen coordinates. By default returns only input-enabled elements.

UIElement *	GetElementAt (UIElement *root, const IntVector2 &position, bool enabledOnly=true)
	Get a child element at element's screen position relative to specified root element.

IntVector2	ConvertSystemToUI (const IntVector2 &systemPos) const
	Convert system mouse position (or offset) to scaled UI position (or offset).

IntVector2	ConvertUIToSystem (const IntVector2 &uiPos) const
	Convert scaled UI position (or offset) to system mouse position (or offset).

UIElement *	GetFocusElement () const

UIElement *	GetFrontElement () const

const ea::vector< UIElement * > &	GetDragElements ()
	Return currently dragged elements.

unsigned	GetNumDragElements () const
	Return the number of currently dragged elements.

UIElement *	GetDragElement (unsigned index)
	Return the drag element at index.

const ea::string &	GetClipboardText () const

float	GetDoubleClickInterval () const

float	GetMaxDoubleClickDistance () const

float	GetDragBeginInterval () const

int	GetDragBeginDistance () const

float	GetDefaultToolTipDelay () const

int	GetMaxFontTextureSize () const

bool	IsNonFocusedMouseWheel () const

bool	GetUseSystemClipboard () const

bool	GetUseScreenKeyboard () const

bool	GetUseMutableGlyphs () const

bool	GetForceAutoHint () const

FontHintLevel	GetFontHintLevel () const

float	GetFontSubpixelThreshold () const

int	GetFontOversampling () const

bool	HasModalElement () const
	Return true when UI has modal element(s).

bool	IsDragging () const
	Return whether a drag is in progress.

float	GetScale () const

IntVector2	GetSize () const

const IntVector2 &	GetCustomSize () const

void	SetRenderTarget (Texture2D *texture, Color clearColor=Color::TRANSPARENT_BLACK)
	Set texture to which entire UI will be rendered.

Texture2D *	GetRenderTarget () const
	Returns texture to which this UI is rendered.

bool	IsRendered () const
	Returns true if thus UI is already rendered in this frame.

Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.

	~Object () override
	Destruct. Clean up self from event sender & receiver structures.

virtual StringHash	GetType () const =0

virtual const ea::string &	GetTypeName () const =0

virtual const TypeInfo *	GetTypeInfo () const =0
	Return type info.

virtual bool	IsInstanceOf (StringHash type) const =0
	Check whether current instance implements specified type.

virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.

virtual void	SerializeInBlock (Archive &archive)
	Serialize content from/to archive. May throw ArchiveException.

template<typename T >
bool	IsInstanceOf () const
	Check current instance is type of specified class.

template<typename T >
T *	Cast ()
	Cast the object to specified most derived class.

template<typename T >
const T *	Cast () const
	Cast the object to specified most derived class.

void	SubscribeToEventManual (StringHash eventType, EventHandler *handler)
	Subscribe to an event that can be sent by any sender.

void	SubscribeToEventManual (Object sender, StringHash eventType, EventHandler handler)
	Subscribe to a specific sender's event.

template<class T >
void	SubscribeToEvent (StringHash eventType, T handler)
	Subscribe to an event that can be sent by any sender.

template<class T >
void	SubscribeToEvent (Object *sender, StringHash eventType, T handler)
	Subscribe to a specific sender's event.

void	UnsubscribeFromEvent (StringHash eventType)
	Unsubscribe from an event.

void	UnsubscribeFromEvent (Object *sender, StringHash eventType)
	Unsubscribe from a specific sender's event.

void	UnsubscribeFromEvents (Object *sender)
	Unsubscribe from a specific sender's events.

void	UnsubscribeFromAllEvents ()
	Unsubscribe from all events.

void	UnsubscribeFromAllEventsExcept (const ea::vector< StringHash > &exceptions)
	Unsubscribe from all events except those listed.

void	UnsubscribeFromAllEventsExcept (const ea::vector< Object * > &exceptions)
	Unsubscribe from all events except those with listed senders.

void	SendEvent (StringHash eventType)
	Send event to all subscribers.

void	SendEvent (StringHash eventType, VariantMap &eventData)
	Send event with parameters to all subscribers.

VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.

template<typename... Args>
void	SendEvent (StringHash eventType, const Args &... args)
	Send event with variadic parameter pairs to all subscribers. The parameters are (paramID, paramValue) pairs.

Context *	GetContext () const
	Return execution context.

const Variant &	GetGlobalVar (StringHash key) const

const VariantMap &	GetGlobalVars () const

void	SetGlobalVar (StringHash key, const Variant &value)

Object *	GetSubsystem (StringHash type) const
	Return subsystem by type.

Object *	GetEventSender () const
	Return active event sender. Null outside event handling.

EventHandler *	GetEventHandler () const
	Return active event handler. Null outside event handling.

bool	HasSubscribedToEvent (StringHash eventType) const
	Return whether has subscribed to an event without specific sender.

bool	HasSubscribedToEvent (Object *sender, StringHash eventType) const
	Return whether has subscribed to a specific sender's event.

bool	HasEventHandlers () const
	Return whether has subscribed to any event.

template<class T >
T *	GetSubsystem () const
	Template version of returning a subsystem.

const ea::string &	GetCategory () const

void	SendEvent (StringHash eventType, const VariantMap &eventData)
	Send event with parameters to all subscribers.

void	SetBlockEvents (bool block)
	Block object from sending and receiving events.

bool	GetBlockEvents () const
	Return sending and receiving events blocking status.

Public Member Functions inherited from Urho3D::RefCounted
	RefCounted ()
	Construct. Allocate the reference count structure and set an initial self weak reference.

virtual	~RefCounted ()
	Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.

	RefCounted (const RefCounted &rhs)=delete
	Prevent copy construction.

RefCounted &	operator= (const RefCounted &rhs)=delete
	Prevent assignment.

int	AddRef ()

int	ReleaseRef ()

int	Refs () const

int	WeakRefs () const

RefCount *	RefCountPtr () const
	Return pointer to the reference count structure.

bool	HasScriptObject () const
	Return true if script runtime object wrapping this native object exists.

bool	IsScriptStrongRef () const
	Return true if script reference is strong.

Private Member Functions
	URHO3D_OBJECT (UI, Object)

void	Initialize ()
	Initialize when screen mode initially set.

void	Update (float timeStep, UIElement *element)
	Update UI element logic recursively.

void	SetVertexData (VertexBuffer *dest, const ea::vector< float > &vertexData)
	Upload UI geometry into a vertex buffer.

void	Render (VertexBuffer *buffer, const ea::vector< UIBatch > &batches, unsigned batchStart, unsigned batchEnd)
	Render UI batches to the current rendertarget. Geometry must have been uploaded first.

void	GetBatches (ea::vector< UIBatch > &batches, ea::vector< float > &vertexData, UIElement *element, IntRect currentScissor)
	Generate batches from an UI element recursively. Skip the cursor element.

void	GetElementAt (UIElement &result, UIElement current, const IntVector2 &position, bool enabledOnly)
	Return UI element at screen position recursively.

UIElement *	GetFocusableElement (UIElement *element)
	Return the first element in hierarchy that can alter focus.

UIElement *	GetWheelHandlerElement (UIElement *element)
	Return the first element in hierarchy that can handle wheel.

void	GetCursorPositionAndVisible (IntVector2 &pos, bool &visible)
	Return cursor position and visibility either from the cursor element, or the Input subsystem.

void	SetCursorShape (CursorShape shape)
	Set active cursor's shape.

void	ReleaseFontFaces ()
	Force release of font faces when global font properties change.

void	ProcessHover (const IntVector2 &windowCursorPos, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor)
	Handle button or touch hover.

void	ProcessClickBegin (const IntVector2 &windowCursorPos, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor, bool cursorVisible)
	Handle button or touch begin.

void	ProcessClickEnd (const IntVector2 &windowCursorPos, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor, bool cursorVisible)
	Handle button or touch end.

void	ProcessMove (const IntVector2 &windowCursorPos, const IntVector2 &cursorDeltaPos, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor, bool cursorVisible)
	Handle mouse or touch move.

void	SendDragOrHoverEvent (StringHash eventType, UIElement element, const IntVector2 &screenPos, const IntVector2 &deltaPos, UI::DragData dragData)
	Send a UI element drag or hover begin event.

void	SendClickEvent (StringHash eventType, UIElement beginElement, UIElement endElement, const IntVector2 &pos, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers)
	Send a UI click event.

void	SendDoubleClickEvent (UIElement beginElement, UIElement endElement, const IntVector2 &firstPos, const IntVector2 &secondPos, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers)
	Send a UI double click event.

void	HandleScreenMode (StringHash eventType, VariantMap &eventData)
	Handle screen mode event.

void	HandleMouseButtonDown (StringHash eventType, VariantMap &eventData)
	Handle mouse button down event.

void	HandleMouseButtonUp (StringHash eventType, VariantMap &eventData)
	Handle mouse button up event.

void	HandleMouseMove (StringHash eventType, VariantMap &eventData)
	Handle mouse move event.

void	HandleMouseWheel (StringHash eventType, VariantMap &eventData)
	Handle mouse wheel event.

void	HandleTouchBegin (StringHash eventType, VariantMap &eventData)
	Handle touch begin event.

void	HandleTouchEnd (StringHash eventType, VariantMap &eventData)
	Handle touch end event.

void	HandleTouchMove (StringHash eventType, VariantMap &eventData)
	Handle touch move event.

void	HandleKeyDown (StringHash eventType, VariantMap &eventData)
	Handle keypress event.

void	HandleTextInput (StringHash eventType, VariantMap &eventData)
	Handle text input event.

void	HandleBeginFrame (StringHash eventType, VariantMap &eventData)
	Handle frame begin event.

void	HandlePostUpdate (StringHash eventType, VariantMap &eventData)
	Handle logic post-update event.

void	HandleRenderUpdate (StringHash eventType, VariantMap &eventData)
	Handle render update event.

void	HandleDropFile (StringHash eventType, VariantMap &eventData)
	Handle a file being drag-dropped into the application window.

void	HandleFocused (StringHash eventType, VariantMap &eventData)
	Handle off-screen UI subsystems gaining focus.

void	HandleEndAllViewsRender (StringHash eventType, VariantMap &eventData)
	Handle rendering to a texture.

ea::unordered_map< WeakPtr< UIElement >, DragData * >::iterator	DragElementErase (ea::unordered_map< WeakPtr< UIElement >, DragData * >::iterator i)
	Remove drag data and return next iterator.

void	ProcessDragCancel ()
	Handle clean up on a drag cancel.

IntVector2	SumTouchPositions (UI::DragData *dragData, const IntVector2 &oldSendPos)
	Sum touch positions and return the begin position ready to send.

void	ResizeRootElement ()
	Resize root element to effective size.

IntVector2	GetEffectiveRootElementSize (bool applyScale=true) const
	Return effective size of the root element, according to UI scale and resolution / custom size.

bool	IsHandlingInput () const
	Return true when subsystem should not process any mouse/keyboard input.

Material *	GetBatchMaterial (const UIBatch &batch) const
	Return material corresponding to UIBatch.

Private Attributes
WeakPtr< Graphics >	graphics_
	Graphics subsystem.

WeakPtr< Renderer >	renderer_
	Renderer subsystem.

SharedPtr< UIElement >	rootElement_
	UI root element.

SharedPtr< UIElement >	rootModalElement_
	UI root modal element.

SharedPtr< Cursor >	cursor_
	Cursor.

WeakPtr< UIElement >	focusElement_
	Currently focused element.

SharedPtr< DefaultUIBatchStateCache >	batchStateCache_
	Cached pipeline states.

ea::vector< UIBatch >	batches_
	UI rendering batches.

ea::vector< float >	vertexData_
	UI rendering vertex data.

ea::vector< UIBatch >	debugDrawBatches_
	UI rendering batches for debug draw.

ea::vector< float >	debugVertexData_
	UI rendering vertex data for debug draw.

SharedPtr< VertexBuffer >	vertexBuffer_
	UI vertex buffer.

SharedPtr< VertexBuffer >	debugVertexBuffer_
	UI debug geometry vertex buffer.

ea::vector< UIElement * >	tempElements_
	UI element query vector.

ea::string	clipBoard_
	Clipboard text.

float	doubleClickInterval_
	Seconds between clicks to register a double click.

float	dragBeginInterval_
	Seconds from mouse button down to begin a drag if there has been no movement exceeding pixel threshold.

float	defaultToolTipDelay_
	Tooltip default display delay in seconds.

int	dragBeginDistance_
	Drag begin event distance threshold in pixels.

MouseButtonFlags	mouseButtons_
	Mouse buttons held down.

MouseButtonFlags	lastMouseButtons_
	Last mouse button pressed.

QualifierFlags	qualifiers_
	Qualifier keys held down.

int	maxFontTextureSize_
	Font texture maximum size.

bool	initialized_
	Initialized flag.

bool	usingTouchInput_
	Touch used flag.

bool	nonFocusedMouseWheel_
	Flag to switch mouse wheel event to be sent to non-focused element at cursor.

bool	useSystemClipboard_
	Flag for using operating system clipboard instead of internal.

bool	useScreenKeyboard_
	Flag for showing the on-screen keyboard on focusing a LineEdit.

bool	useMutableGlyphs_
	Flag for using mutable (erasable) font glyphs.

bool	forceAutoHint_
	Flag for forcing FreeType auto hinting.

FontHintLevel	fontHintLevel_
	FreeType hinting level (default is FONT_HINT_LEVEL_NORMAL).

float	fontSubpixelThreshold_
	Maxmimum font size for subpixel glyph positioning and oversampling (default is 12).

int	fontOversampling_
	Horizontal oversampling for subpixel fonts (default is 2).

bool	uiRendered_
	Flag for UI already being rendered this frame.

unsigned	nonModalBatchSize_
	Non-modal batch size (used internally for rendering).

Timer	clickTimer_
	Timer used to trigger double click.

WeakPtr< UIElement >	doubleClickElement_
	UI element last clicked for tracking double clicks.

IntVector2	doubleClickFirstPos_
	Screen position of first mouse click for double click distance checking.

float	maxDoubleClickDist_
	Max screen distance the first click in a double click can be from the second click in a double click.

ea::unordered_map< WeakPtr< UIElement >, bool >	hoveredElements_
	Currently hovered elements.

ea::unordered_map< WeakPtr< UIElement >, DragData * >	dragElements_
	Currently dragged elements.

int	dragElementsCount_
	Number of elements in dragElements_.

int	dragConfirmedCount_
	Number of elements in dragElements_ with dragPending = false.

ea::unordered_map< WeakPtr< UIElement >, MouseButtonFlags >	touchDragElements_
	UI elements that are being touched with touch input.

ea::vector< UIElement * >	dragElementsConfirmed_
	Confirmed drag elements cache.

float	uiScale_
	Current scale of UI.

IntVector2	customSize_
	Root element custom size. 0,0 for automatic resizing (default).

WeakPtr< Texture2D >	texture_
	Texture that UI will be rendered into.

Color	clearColor_ = Color::TRANSPARENT_BLACK
	Color which will be used to clear target texture.


SharedPtr< Material >	noTextureMaterial_

SharedPtr< Material >	alphaMapMaterial_

SharedPtr< Material >	diffMapMaterial_

SharedPtr< Material >	diffMapAlphaMaskMaterial_

Additional Inherited Members
Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo *	GetTypeInfoStatic ()
	Return type info static.

Static Public Attributes inherited from Urho3D::Object
static constexpr ea::array< StringHash, 0 >	TypeHierarchy {}

Protected Attributes inherited from Urho3D::Object
WeakPtr< Context >	context_
	Execution context.

Detailed Description

UI subsystem. Manages the graphical user interface.

Member Function Documentation

◆ GetClipboardText()

const ea::string & Urho3D::UI::GetClipboardText ( ) const

Return clipboard text.

◆ GetCursor()

Cursor * Urho3D::UI::GetCursor ( ) const

inline

Return cursor.

◆ GetCustomSize()

const IntVector2 & Urho3D::UI::GetCustomSize ( ) const

inline

Return root element custom size. Returns 0,0 when custom size is not being used and automatic resizing according to window size is in use instead (default).

◆ GetDefaultToolTipDelay()

float Urho3D::UI::GetDefaultToolTipDelay ( ) const

inline

Return tooltip default display delay in seconds.

◆ GetDoubleClickInterval()

float Urho3D::UI::GetDoubleClickInterval ( ) const

inline

Return UI element double click interval in seconds.

◆ GetDragBeginDistance()

int Urho3D::UI::GetDragBeginDistance ( ) const

inline

Return UI drag start event distance threshold in pixels.

◆ GetDragBeginInterval()

float Urho3D::UI::GetDragBeginInterval ( ) const

inline

Return UI drag start event interval in seconds.

◆ GetElementAt()

UIElement * Urho3D::UI::GetElementAt	(	const IntVector2 &	position,
		bool	enabledOnly = `true`
	)

Return mouse position. Return UI element at global screen coordinates. By default returns only input-enabled elements.

◆ GetFocusElement()

UIElement * Urho3D::UI::GetFocusElement ( ) const

inline

Return focused element.

◆ GetFontHintLevel()

FontHintLevel Urho3D::UI::GetFontHintLevel ( ) const

inline

Return the current FreeType font hinting level.

◆ GetFontOversampling()

int Urho3D::UI::GetFontOversampling ( ) const

inline

Get the oversampling (horizonal stretching) used to improve subpixel font rendering. Only affects fonts smaller than the subpixel limit.

◆ GetFontSubpixelThreshold()

float Urho3D::UI::GetFontSubpixelThreshold ( ) const

inline

Get the font subpixel threshold. Below this size, if the hint level is LIGHT or NONE, fonts will use subpixel positioning plus oversampling for higher-quality rendering. Has no effect at hint level NORMAL.

◆ GetForceAutoHint()

bool Urho3D::UI::GetForceAutoHint ( ) const

inline

Return whether is using forced autohinting.

◆ GetFrontElement()

UIElement * Urho3D::UI::GetFrontElement ( ) const

Return topmost enabled root-level non-modal element.

◆ GetMaxDoubleClickDistance()

float Urho3D::UI::GetMaxDoubleClickDistance ( ) const

inline

Get max screen distance in pixels for double clicks to register.

◆ GetMaxFontTextureSize()

int Urho3D::UI::GetMaxFontTextureSize ( ) const

inline

Return font texture maximum size.

◆ GetRoot()

UIElement * Urho3D::UI::GetRoot ( ) const

inline

Return root UI element.

◆ GetRootModalElement()

UIElement * Urho3D::UI::GetRootModalElement ( ) const

inline

Return root modal element.

◆ GetScale()

float Urho3D::UI::GetScale ( ) const

inline

Return current UI scale.

◆ GetSize()

IntVector2 Urho3D::UI::GetSize ( ) const

Return screen size adjusted by scale.

◆ GetUICursorPosition()

IntVector2 Urho3D::UI::GetUICursorPosition ( ) const

Return cursor position.

◆ GetUseMutableGlyphs()

bool Urho3D::UI::GetUseMutableGlyphs ( ) const

inline

Return whether is using mutable (eraseable) glyphs for fonts.

◆ GetUseScreenKeyboard()

bool Urho3D::UI::GetUseScreenKeyboard ( ) const

inline

Return whether focusing a LineEdit will show the on-screen keyboard.

◆ GetUseSystemClipboard()

bool Urho3D::UI::GetUseSystemClipboard ( ) const

inline

Return whether is using the system clipboard.

◆ IsNonFocusedMouseWheel()

bool Urho3D::UI::IsNonFocusedMouseWheel ( ) const

inline

Return whether mouse wheel can control also a non-focused element.

◆ SetClipboardText()

void Urho3D::UI::SetClipboardText ( const ea::string & text )

Set clipboard text.

◆ SetCursor()

void Urho3D::UI::SetCursor ( Cursor * cursor )

Set cursor UI element.

◆ SetCustomSize()

void Urho3D::UI::SetCustomSize ( const IntVector2 & size )

Set custom size of the root element. This disables automatic resizing of the root element according to window size. Set custom size 0,0 to return to automatic resizing.

◆ SetDefaultToolTipDelay()

void Urho3D::UI::SetDefaultToolTipDelay ( float delay )

Set tooltip default display delay in seconds.

◆ SetDoubleClickInterval()

void Urho3D::UI::SetDoubleClickInterval ( float interval )

Set UI element double click interval in seconds.

◆ SetDragBeginDistance()

void Urho3D::UI::SetDragBeginDistance ( int pixels )

Set UI drag event start distance threshold in pixels.

◆ SetDragBeginInterval()

void Urho3D::UI::SetDragBeginInterval ( float interval )

Set UI drag event start interval in seconds.

◆ SetFontHintLevel()

void Urho3D::UI::SetFontHintLevel ( FontHintLevel level )

Set the hinting level used by FreeType fonts.

◆ SetFontOversampling()

void Urho3D::UI::SetFontOversampling ( int oversampling )

Set the oversampling (horizonal stretching) used to improve subpixel font rendering. Only affects fonts smaller than the subpixel limit.

◆ SetFontSubpixelThreshold()

void Urho3D::UI::SetFontSubpixelThreshold ( float threshold )

Set the font subpixel threshold. Below this size, if the hint level is LIGHT or NONE, fonts will use subpixel positioning plus oversampling for higher-quality rendering. Has no effect at hint level NORMAL.

◆ SetForceAutoHint()

void Urho3D::UI::SetForceAutoHint ( bool enable )

Set whether to force font autohinting instead of using FreeType's TTF bytecode interpreter.

◆ SetMaxDoubleClickDistance()

void Urho3D::UI::SetMaxDoubleClickDistance ( float distPixels )

Set max screen distance in pixels between double click clicks.

◆ SetMaxFontTextureSize()

void Urho3D::UI::SetMaxFontTextureSize ( int size )

Set maximum font face texture size. Must be a power of two. Default is 2048.

◆ SetModalElement()

bool Urho3D::UI::SetModalElement	(	UIElement *	modalElement,
		bool	enable
	)

Set modal element. Until all the modal elements are dismissed, all the inputs and events are only sent to them. Return true when successful. Only the modal element can clear its modal status or when it is being destructed.

◆ SetNonFocusedMouseWheel()

void Urho3D::UI::SetNonFocusedMouseWheel ( bool nonFocusedMouseWheel )

Set whether mouse wheel can control also a non-focused element.

◆ SetScale()

void Urho3D::UI::SetScale ( float scale )

Set UI scale. 1.0 is default (pixel perfect). Resize the root element to match.

◆ SetUseMutableGlyphs()

void Urho3D::UI::SetUseMutableGlyphs ( bool enable )

Set whether to use mutable (eraseable) glyphs to ensure a font face never expands to more than one texture. Default false.

◆ SetUseScreenKeyboard()

void Urho3D::UI::SetUseScreenKeyboard ( bool enable )

Set whether to show the on-screen keyboard (if supported) when a LineEdit is focused. Default true on mobile devices.

◆ SetUseSystemClipboard()

void Urho3D::UI::SetUseSystemClipboard ( bool enable )

Set whether to use system clipboard. Default false.

Member Data Documentation

◆ noTextureMaterial_

SharedPtr<Material> Urho3D::UI::noTextureMaterial_

private

Default materials

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

Urho3D/UI/UI.h
Urho3D/UI/UI.cpp

Classes

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ GetClipboardText()

◆ GetCursor()

◆ GetCustomSize()

◆ GetDefaultToolTipDelay()

◆ GetDoubleClickInterval()

◆ GetDragBeginDistance()

◆ GetDragBeginInterval()

◆ GetElementAt()

◆ GetFocusElement()

◆ GetFontHintLevel()

◆ GetFontOversampling()

◆ GetFontSubpixelThreshold()

◆ GetForceAutoHint()

◆ GetFrontElement()

◆ GetMaxDoubleClickDistance()

◆ GetMaxFontTextureSize()

◆ GetRoot()

◆ GetRootModalElement()

◆ GetScale()

◆ GetSize()

◆ GetUICursorPosition()

◆ GetUseMutableGlyphs()

◆ GetUseScreenKeyboard()

◆ GetUseSystemClipboard()

◆ IsNonFocusedMouseWheel()

◆ SetClipboardText()

◆ SetCursor()

◆ SetCustomSize()

◆ SetDefaultToolTipDelay()

◆ SetDoubleClickInterval()

◆ SetDragBeginDistance()

◆ SetDragBeginInterval()

◆ SetFontHintLevel()

◆ SetFontOversampling()

◆ SetFontSubpixelThreshold()

◆ SetForceAutoHint()

◆ SetMaxDoubleClickDistance()

◆ SetMaxFontTextureSize()

◆ SetModalElement()

◆ SetNonFocusedMouseWheel()

◆ SetScale()

◆ SetUseMutableGlyphs()

◆ SetUseScreenKeyboard()

◆ SetUseSystemClipboard()

Member Data Documentation

◆ noTextureMaterial_