RootCanvasView

Hierarchy

• View

  ↳ RootCanvasView

Index

Constructors

• constructor

Properties

• backgroundColor

• borderColor

• borderRect

• context

• height

• id

• innerRect

• lp

• name

• offsetRect

• onMount

• rect

• visibility

• width

Accessors

• innerHeight

• innerWidth

Methods

• addChild

• destroy

• dispatchPointerEvent

• draw

• getBackgroundColor

• getBorder

• getBorderColor

• getCanvas

• getId

• getInternalWrappedHeight

• getInternalWrappedWidth

• getLayoutParams

• getMatchParentHeight

• getMatchParentWidth

• getOnMount

• getParent

• getRootView

• getScale

• getVisibility

• hasParent

• layout

• measure

• mount

• onDestroy

• onDraw

• onLayout

• onMeasure

• onPointerEvent

• onSizeChanged

• onSnapshot

• removeChild

• removeChildAt

• require

• requireGuard

• requireGuardAndTake

• resolvePositionDependencies

• run

• screenshot

• setBackgroundColor

• setBorder

• setBorderColor

• setChildAt

• setDebugEnabled

• setId

• setLayoutParams

• setOnMount

• setVisibility

• setupPointerEvents

• snapshot

Constructors

constructor

+ new RootCanvasView(context: Context, canvas: Canvas): RootCanvasView

Overrides View.constructor

Parameters:

Name	Type
context	Context
canvas	Canvas

Returns: RootCanvasView

Properties

Protected Optional backgroundColor

• backgroundColor? : undefined | string

Inherited from RootCanvasView.backgroundColor

---

Protected Optional borderColor

• borderColor? : undefined | string

Inherited from RootCanvasView.borderColor

---

Protected Optional borderRect

• borderRect? : Rect

Inherited from RootCanvasView.borderRect

---

Readonly context

• context: Context

Inherited from RootCanvasView.context

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Protected height

• height: number = 0

Inherited from RootCanvasView.height

---

Optional id

• id? : undefined | number

Inherited from RootCanvasView.id

---

Protected innerRect

• innerRect: Rect = new Rect(0)

Inherited from RootCanvasView.innerRect

This are the bounds of view including padding.

---

Protected lp

• lp: LayoutParams = new LayoutParams()

Inherited from RootCanvasView.lp

---

Readonly name

• name: string

Inherited from RootCanvasView.name

---

offsetRect

• offsetRect: Rect = new Rect(0)

Inherited from RootCanvasView.offsetRect

This are the bounds of view absolute offset.

---

Protected Optional onMount

• onMount? : undefined | function

Inherited from RootCanvasView.onMount

---

Protected rect

• rect: Rect = new Rect(0)

Inherited from RootCanvasView.rect

This are bounds of a view including margin and padding

---

Protected visibility

• visibility: Visibility = Visibility.VISIBLE

Inherited from RootCanvasView.visibility

---

Protected width

• width: number = 0

Inherited from RootCanvasView.width

Accessors

innerHeight

• get innerHeight(): number

Inherited from RootCanvasView.innerHeight

Returns: number

---

innerWidth

• get innerWidth(): number

Inherited from RootCanvasView.innerWidth

Returns: number

Methods

addChild

▸ addChild(child: View, position: number): void

Inherited from RootCanvasView.addChild

Parameters:

Name	Type	Default
child	View	-
position	number	-1

Returns: void

---

destroy

▸ destroy(): void

Inherited from RootCanvasView.destroy

Returns: void

---

dispatchPointerEvent

▸ dispatchPointerEvent(event: CanvasPointerEvent): boolean

Inherited from RootCanvasView.dispatchPointerEvent

Parameters:

Name	Type
event	CanvasPointerEvent

Returns: boolean

---

draw

▸ draw(canvas: ViewCanvas): void

Overrides TextView.draw

Parameters:

Name	Type
canvas	ViewCanvas

Returns: void

---

getBackgroundColor

▸ getBackgroundColor(): undefined | string

Inherited from RootCanvasView.getBackgroundColor

Returns: undefined | string

---

getBorder

▸ getBorder(): undefined | string

Inherited from RootCanvasView.getBorder

Returns: undefined | string

---

getBorderColor

▸ getBorderColor(): undefined | string

Inherited from RootCanvasView.getBorderColor

Returns: undefined | string

---

getCanvas

▸ getCanvas(): HTMLCanvasElement

Returns: HTMLCanvasElement

---

getId

▸ getId(): undefined | string | number

Inherited from RootCanvasView.getId

Returns: undefined | string | number

---

getInternalWrappedHeight

▸ getInternalWrappedHeight(_canvas: ViewCanvas): number | undefined

Inherited from RootCanvasView.getInternalWrappedHeight

Parameters:

Name	Type
_canvas	ViewCanvas

Returns: number | undefined

---

getInternalWrappedWidth

▸ getInternalWrappedWidth(_canvas: ViewCanvas): number | undefined

Inherited from RootCanvasView.getInternalWrappedWidth

Parameters:

Name	Type
_canvas	ViewCanvas

Returns: number | undefined

---

getLayoutParams

▸ getLayoutParams(): LayoutParams‹›

Inherited from RootCanvasView.getLayoutParams

Returns: LayoutParams‹›

---

getMatchParentHeight

▸ getMatchParentHeight(): number

Inherited from RootCanvasView.getMatchParentHeight

Returns: number

---

getMatchParentWidth

▸ getMatchParentWidth(): number

Inherited from RootCanvasView.getMatchParentWidth

Returns: number

---

getOnMount

▸ getOnMount(): undefined | function

Inherited from RootCanvasView.getOnMount

Returns: undefined | function

---

getParent

▸ getParent(): null | View‹ViewProps›

Inherited from RootCanvasView.getParent

Returns: null | View‹ViewProps›

---

getRootView

▸ getRootView(): View‹ViewProps›

Inherited from RootCanvasView.getRootView

Returns: View‹ViewProps›

---

getScale

▸ getScale(): number

Returns: number

---

getVisibility

▸ getVisibility(): Visibility

Inherited from RootCanvasView.getVisibility

Returns: Visibility

---

hasParent

▸ hasParent(): boolean

Inherited from RootCanvasView.hasParent

Returns: boolean

---

layout

▸ layout(force?: undefined | false | true): void

Inherited from RootCanvasView.layout

Prepares the layout for all children

Parameters:

Name	Type
force?	undefined | false | true

Returns: void

---

measure

▸ measure(canvas: ViewCanvas, force?: undefined | false | true): void

Inherited from RootCanvasView.measure

Measures the component and adjusts it's dimensions to min/max width and height values.

Parameters:

Name	Type
canvas	ViewCanvas
force?	undefined | false | true

Returns: void

true if width or height changed, false otherwise

---

mount

▸ mount(): void

Inherited from RootCanvasView.mount

Returns: void

---

onDestroy

▸ onDestroy(): void

Overrides TextView.onDestroy

Returns: void

---

onDraw

▸ onDraw(_canvas: ViewCanvas): void

Inherited from RootCanvasView.onDraw

Parameters:

Name	Type
_canvas	ViewCanvas

Returns: void

---

onLayout

▸ onLayout(): void

Inherited from RootCanvasView.onLayout

Returns: void

---

onMeasure

▸ onMeasure(width: number, height: number): object

Inherited from RootCanvasView.onMeasure

Parameters:

Name	Type
width	number
height	number

Returns: object

• height: number

• width: number

---

onPointerEvent

▸ onPointerEvent(_event: CanvasPointerEvent): boolean

Inherited from RootCanvasView.onPointerEvent

Parameters:

Name	Type
_event	CanvasPointerEvent

Returns: boolean

---

onSizeChanged

▸ onSizeChanged(): void

Overrides TextView.onSizeChanged

Returns: void

---

onSnapshot

▸ onSnapshot(): object

Overrides View.onSnapshot

Returns: object

• dpr: number = this.dpr

---

removeChild

▸ removeChild(child: View | number): void

Inherited from RootCanvasView.removeChild

Parameters:

Name	Type
child	View | number

Returns: void

---

removeChildAt

▸ removeChildAt(startIndex: number, endIndex: number): void

Inherited from RootCanvasView.removeChildAt

Parameters:

Name	Type	Default
startIndex	number	-
endIndex	number	startIndex + 1

Returns: void

---

require

▸ require(requiredChanges: RequiredViewChanges): void

Overrides TextView.require

Parameters:

Name	Type
requiredChanges	RequiredViewChanges

Returns: void

---

requireGuard

▸ requireGuard(requiredChanges: RequiredViewChanges): boolean

Inherited from RootCanvasView.requireGuard

Parameters:

Name	Type
requiredChanges	RequiredViewChanges

Returns: boolean

---

requireGuardAndTake

▸ requireGuardAndTake(requiredChanges: RequiredViewChanges, force?: undefined | false | true): boolean

Inherited from RootCanvasView.requireGuardAndTake

Parameters:

Name	Type
requiredChanges	RequiredViewChanges
force?	undefined | false | true

Returns: boolean

---

resolvePositionDependencies

▸ resolvePositionDependencies(): void

Inherited from RootCanvasView.resolvePositionDependencies

Prepare arrays of children ordered horizontally and vertically, so that they could be measured in a single pass, without waiting for their dependencies to be resolved.

This has to be called before measure whenever child's layoutParams change or views are added/removed.

throws an error in case of unresolvable dependency (circular or lack of required view)

Returns: void

---

run

▸ run(): void

Returns: void

---

screenshot

▸ screenshot(): string | undefined

Inherited from RootCanvasView.screenshot

Returns: string | undefined

---

setBackgroundColor

▸ setBackgroundColor(backgroundColor: string | undefined): void

Inherited from RootCanvasView.setBackgroundColor

Parameters:

Name	Type
backgroundColor	string | undefined

Returns: void

---

setBorder

▸ setBorder(borderRect: RectLike | undefined): void

Inherited from RootCanvasView.setBorder

Parameters:

Name	Type
borderRect	RectLike | undefined

Returns: void

---

setBorderColor

▸ setBorderColor(borderColor: string | undefined): void

Inherited from RootCanvasView.setBorderColor

Parameters:

Name	Type
borderColor	string | undefined

Returns: void

---

setChildAt

▸ setChildAt(child: View, position: number): void

Inherited from RootCanvasView.setChildAt

Parameters:

Name	Type
child	View
position	number

Returns: void

---

setDebugEnabled

▸ setDebugEnabled(enabled: boolean): void

Parameters:

Name	Type
enabled	boolean

Returns: void

---

setId

▸ setId(id?: undefined | string): void

Inherited from RootCanvasView.setId

Parameters:

Name	Type
id?	undefined | string

Returns: void

---

setLayoutParams

▸ setLayoutParams(lp: LayoutParams): void

Inherited from RootCanvasView.setLayoutParams

Parameters:

Name	Type
lp	LayoutParams

Returns: void

---

setOnMount

▸ setOnMount(callback: function): void

Inherited from RootCanvasView.setOnMount

Parameters:

▪ callback: function

▸ (view: View‹any›): void

Parameters:

Name	Type
view	View‹any›

Returns: void

---

setVisibility

▸ setVisibility(visibility: Visibility): void

Inherited from RootCanvasView.setVisibility

Parameters:

Name	Type	Default
visibility	Visibility	Visibility.VISIBLE

Returns: void

---

setupPointerEvents

▸ setupPointerEvents(): void

Returns: void

---

snapshot

▸ snapshot(): object

Inherited from RootCanvasView.snapshot

Returns: object