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@searsuite/sear-render-context

Platform-neutral drawing contracts with Web Canvas, SVG, WebGL, and headless adapters.

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20 exportsderived from source

classCoordinateTransformer source ↗

class CoordinateTransformer

Single authority for host-view, world, and raster coordinate conversion.

constructorconstructor

CoordinateTransformer(scrollManager: ScrollManager, renderContext: RenderContext, hitRenderContext: RenderContext): CoordinateTransformer

Creates a CoordinateTransformer instance.

scrollManager: ScrollManager
renderContext: RenderContext
hitRenderContext: RenderContext

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the host-neutral coordinate transformer.

methodgetVisibleWorldRect

getVisibleWorldRect(): PositionRect<unknown>

Returns the visible world rect.

methodviewToRaster

viewToRaster(point: CoordinatePoint): CoordinatePoint

Converts a host-view point into raster coordinates for pixel reads.

point: CoordinatePoint

methodviewToWorld

viewToWorld(point: CoordinatePoint, scroll?: Pick<ScrollManagerState, "x" | "y">): CoordinatePoint

Converts a host-view point into world coordinates.

point: CoordinatePoint
scroll: Pick<ScrollManagerState, "x" | "y">

methodworldToView

worldToView(point: CoordinatePoint, scroll?: Pick<ScrollManagerState, "x" | "y">): CoordinatePoint

Converts a world point into host-view coordinates.

point: CoordinatePoint
scroll: Pick<ScrollManagerState, "x" | "y">

classHeadlessHitRenderContext source ↗

class HeadlessHitRenderContext extends HeadlessRenderContext

Hit-test layer marker for a headless render pipeline.

constructorconstructor

HeadlessHitRenderContext(): HeadlessHitRenderContext

propertysymbolstatic

readonly symbol: symbol

DI token for resolving HeadlessHitRenderContext.

Inherited members 59

Inherited from HeadlessRenderContext.

classHeadlessOffScreenRenderContext source ↗

class HeadlessOffScreenRenderContext extends HeadlessRenderContext

Off-screen layer marker for a headless render pipeline.

constructorconstructor

HeadlessOffScreenRenderContext(): HeadlessOffScreenRenderContext

propertysymbolstatic

readonly symbol: symbol

DI token for resolving HeadlessOffScreenRenderContext.

Inherited members 59

Inherited from HeadlessRenderContext.

classHeadlessRenderContext source ↗

class HeadlessRenderContext extends RenderContext

Render context that preserves engine state while producing no raster output.

constructorconstructor

HeadlessRenderContext(): HeadlessRenderContext

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the headless render context.

methodaddClickEventListener

addClickEventListener(_callback: (event: EventWithOffset): void): void

Attaches a click listener.

_callback: (event: EventWithOffset): void

methodaddEventListener

addEventListener(_type: string, _callback: (event: EventWithOffset): void): (): void

Attaches a normalized event listener and returns an idempotent disposer.

_type: string
_callback: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(_callback: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

_callback: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(_callback: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

_callback: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(_callback: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

_callback: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(_callback: (): void): void

Attaches a resize listener for host target size changes.

_callback: (): void

methodbeginPath

beginPath(): void

Begins a new path.

methodclearRect

clearRect(_x: number, _y: number, _width: number, _height: number): void

Clears a rectangle from the target.

_x: number
_y: number
_width: number
_height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): RenderContext

Creates a same-kind render context for an auxiliary render layer.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): RenderContext

Creates a same-kind render context configured for hit testing.

methoddrawImage

drawImage(_image: unknown, _x: number, _y: number): void drawImage(_image: unknown, _x: number, _y: number, _width: number, _height: number): void

drawImage(_image: unknown, _x: number, _y: number, _width: number, _height: number, _sx: number, _sy: number, _sWidth: number, _sHeight: number): void

Draws an image at its natural size.

_image: unknown
_x: number
_y: number
_width: number
_height: number
_sx: number
_sy: number
_sWidth: number
_sHeight: number

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(_text: string, _x: number, _y: number, _maxWidth?: number): void

Draws text at the given position.

_text: string
_x: number
_y: number
_maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(_x: number, _y: number, width: number, height: number): RenderImageData

Reads raster pixels from the target.

_x: number
_y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Raster units represented by one host-view unit for this context.

methodgetRenderTarget

getRenderTarget(): unknown

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): unknown

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the current logical view scale.

methodinitialize

initialize(scale?: number): void

Initializes target sizing and adapter-specific state.

scale: number

methodlineTo

lineTo(_x: number, _y: number): void

Adds a line from the current path cursor.

_x: number
_y: number

methodmeasureText

measureText(text: string): { height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(_x: number, _y: number): void

Moves the active path cursor.

_x: number
_y: number

methodputImageData

putImageData(_imageData: RenderImageData, _x: number, _y: number): void

Writes raster pixels to the target.

_imageData: RenderImageData
_x: number
_y: number

methodrect

rect(_x: number, _y: number, _width: number, _height: number): void

Adds a rectangle to the active path.

_x: number
_y: number
_width: number
_height: number

methodremoveClickEventListener

removeClickEventListener(_callback: (event: EventWithOffset): void): void

Removes a click listener.

_callback: (event: EventWithOffset): void

methodremoveMouseDownEventListener

removeMouseDownEventListener(_callback: (event: EventWithOffset): void): void

Removes a pointer-press listener.

_callback: (event: EventWithOffset): void

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(_callback: (event: EventWithOffset): void): void

Removes a pointer-move listener.

_callback: (event: EventWithOffset): void

methodremoveMouseUpEventListener

removeMouseUpEventListener(_callback: (event: EventWithOffset): void): void

Removes a pointer-release listener.

_callback: (event: EventWithOffset): void

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(_width: number, _height: number, scale?: number): void

Resizes the backing render target to the host view's logical size and raster scale.

_width: number
_height: number
scale: number

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(_fillStyle: RenderPaint): void

Sets the current fill style.

_fillStyle: RenderPaint

methodsetFont

setFont(_font: string): void

Sets the active platform-neutral font descriptor.

_font: string

methodsetLineDash

setLineDash(_segments: number[]): void

Sets the current line dash pattern.

_segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(_strokeStyle: RenderPaint): void

Sets the current stroke style.

_strokeStyle: RenderPaint

methodsetTransform

setTransform(_a: number, _b: number, _c: number, _d: number, _e: number, _f: number): void

Replaces the current transform matrix.

_a: number
_b: number
_c: number
_d: number
_e: number
_f: number

methodsetViewScale

setViewScale(scale: number): void

Logical view scale (distinct from device pixel ratio).

scale: number

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(_x: number, _y: number, _width: number, _height: number): void

Strokes a rectangle without requiring a separate path.

_x: number
_y: number
_width: number
_height: number

methodtranslate

translate(_x: number, _y: number): void

Translates the current drawing transform.

_x: number
_y: number

Inherited members 10

Inherited from RenderContext.

classRenderContext source ↗

class RenderContext

Platform-neutral immediate-mode drawing contract used by render strategies.

Concrete render targets implement this shape so scene nodes and strategies can draw without depending on host-specific APIs.

constructorconstructor

RenderContext(): RenderContext

propertyisDrawn

isDrawn: boolean

Whether the target has received at least one draw operation.

propertyhitSymbolstatic

readonly hitSymbol: symbol

DI token for the hit-test render layer.

propertyoffScreenSymbolstatic

readonly offScreenSymbol: symbol

DI token for the scroll-optimization render layer.

propertysymbolstatic

readonly symbol: symbol

DI token for the primary visible render layer.

methodaddClickEventListener

addClickEventListener(callBack: (event: EventWithOffset): void): void

Attaches a click listener.

callBack: (event: EventWithOffset): void

methodaddEventListener

addEventListener(type: string, callBack: (event: EventWithOffset): void): (): void

Attaches a normalized event listener and returns an idempotent disposer.

type: string
callBack: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

callBack: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

callBack: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

callBack: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(callBack: (): void): void

Attaches a resize listener for host target size changes.

callBack: (): void

methodbeginFrame

beginFrame(): void

Starts a new render frame when the target rebuilds its visual state.

methodbeginNodeSemantics

beginNodeSemantics(_semantics: RenderNodeSemantics): void

Marks subsequent drawing operations as belonging to one semantic scene node.

_semantics: RenderNodeSemantics

methodbeginPath

beginPath(): void

Begins a new path.

methodclearRect

clearRect(x: number, y: number, width: number, height: number): void

Clears a rectangle from the target.

x: number
y: number
width: number
height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): RenderContext

Creates a same-kind render context for an auxiliary render layer.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): RenderContext

Creates a same-kind render context configured for hit testing.

methoddrawImage

drawImage(image: unknown, x: number, y: number): void drawImage(image: unknown, x: number, y: number, width: number, height: number): void

drawImage(image: unknown, x: number, y: number, width: number, height: number, sx: number, sy: number, sWidth: number, sHeight: number): void

Draws an image at its natural size.

image: unknown
x: number
y: number
width: number
height: number
sx: number
sy: number
sWidth: number
sHeight: number

methodendNodeSemantics

endNodeSemantics(): void

Ends the semantic scene-node boundary started by beginNodeSemantics.

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(text: string, x: number, y: number, maxWidth?: number): void

Draws text at the given position.

text: string
x: number
y: number
maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(x: number, y: number, width: number, height: number): RenderImageData

Reads raster pixels from the target.

x: number
y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Raster units represented by one host-view unit for this context.

methodgetRenderTarget

getRenderTarget(): unknown

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): unknown

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the current logical view scale.

methodinitialize

initialize(scale?: number): void

Initializes target sizing and adapter-specific state.

scale: number

methodlineTo

lineTo(x: number, y: number): void

Adds a line from the current path cursor.

x: number
y: number

methodmeasureText

measureText(text: string): { fontAscent?: number; fontDescent?: number; fontLineGap?: number; height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(x: number, y: number): void

Moves the active path cursor.

x: number
y: number

methodputImageData

putImageData(imageData: RenderImageData, x: number, y: number): void

Writes raster pixels to the target.

imageData: RenderImageData
x: number
y: number

methodrect

rect(x: number, y: number, width: number, height: number): void

Adds a rectangle to the active path.

x: number
y: number
width: number
height: number

methodremoveClickEventListener

removeClickEventListener(callBack: (event: EventWithOffset): void): void

Removes a click listener.

callBack: (event: EventWithOffset): void

methodremoveMouseDownEventListener

removeMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-press listener.

callBack: (event: EventWithOffset): void

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-move listener.

callBack: (event: EventWithOffset): void

methodremoveMouseUpEventListener

removeMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-release listener.

callBack: (event: EventWithOffset): void

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodrequiresExplicitNodeClear

requiresExplicitNodeClear(): boolean

Whether an existing node must erase its prior output before it is redrawn.

methodrequiresFrameRebuild

requiresFrameRebuild(): boolean

Whether the target must rebuild a complete visual frame instead of reusing a pixel cache.

methodresetHitFrame

resetHitFrame(width: number, height: number): void

Resets the complete hit-test frame using the target's native lifecycle.

width: number
height: number

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(width: number, height: number, scale?: number): void

Resizes the backing render target to the host view's logical size and raster scale.

width: number
height: number
scale: number

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(fillStyle: RenderPaint): void

Sets the current fill style.

fillStyle: RenderPaint

methodsetFont

setFont(font: string): void

Sets the active platform-neutral font descriptor.

font: string

methodsetLineDash

setLineDash(segments: number[]): void

Sets the current line dash pattern.

segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(strokeStyle: RenderPaint): void

Sets the current stroke style.

strokeStyle: RenderPaint

methodsetTransform

setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void

Replaces the current transform matrix.

a: number
b: number
c: number
d: number
e: number
f: number

methodsetViewScale

setViewScale(scale: number): void

Logical view scale (distinct from device pixel ratio).

scale: number

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(x: number, y: number, width: number, height: number): void

Strokes a rectangle without requiring a separate path.

x: number
y: number
width: number
height: number

methodsupportsDirtyRedraw

supportsDirtyRedraw(): boolean

Whether the target can apply a redraw to only its accumulated dirty regions.

methodtranslate

translate(x: number, y: number): void

Translates the current drawing transform.

x: number
y: number

classWebCanvasRenderContext source ↗

class WebCanvasRenderContext extends RenderContext

Browser Canvas2D implementation of the platform-neutral RenderContext.

The context keeps device-pixel-ratio and logical view scale separate so render strategies can work in shared world/view coordinates while the canvas writes to the correct raster backing store.

constructorconstructor

WebCanvasRenderContext(renderTarget: unknown, readbackOptimized?: boolean, platform?: Platform): WebCanvasRenderContext

Constructs a Canvas render context from a host canvas.

renderTarget: unknown: HTMLCanvasElement supplied by the host adapter.
readbackOptimized: boolean
platform: Platform

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the visible canvas render context.

methodaddClickEventListener

addClickEventListener(callBack: (event: EventWithOffset): void): void

Attaches a click listener.

callBack: (event: EventWithOffset): void

methodaddEventListener

addEventListener(type: string, callBack: (event: EventWithOffset): void): (): void

Registers a host pointer event listener on the canvas root.

type: string
callBack: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

callBack: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

callBack: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

callBack: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(callBack: (): void): void

Attaches a resize listener for host target size changes.

callBack: (): void

methodbeginPath

beginPath(): void

Begins a new path.

methodclearRect

clearRect(x: number, y: number, width: number, height: number): void

Clears a rectangle from the target.

x: number
y: number
width: number
height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): WebCanvasRenderContext

Clones the backing canvas dimensions into a detached WebCanvasRenderContext.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): WebCanvasRenderContext

Creates a detached render context used by hit rendering.

methoddrawImage

drawImage(image: unknown, x: number, y: number): void drawImage(image: unknown, x: number, y: number, width: number, height: number): void

drawImage(image: unknown, x: number, y: number, width: number, height: number, sx: number, sy: number, sWidth: number, sHeight: number): void

Draws an image at its natural size.

image: unknown
x: number
y: number
width: number
height: number
sx: number
sy: number
sWidth: number
sHeight: number

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(text: string, x: number, y: number, maxWidth?: number): void

Draws text at the given position.

text: string
x: number
y: number
maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(x: number, y: number, width: number, height: number): { data: [number, number, number, number][]; height: number; width: number }

Reads raster pixels from the target.

x: number
y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Returns the host-view to raster scale, excluding logical sheet zoom.

methodgetRenderTarget

getRenderTarget(): HTMLCanvasElement

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): HTMLCanvasElement

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the logical view scale.

methodinitialize

initialize(scale: number): void

Initializes canvas sizing and marks the canvas with the shared render-context token.

scale: number: Device pixel ratio used for backing-store dimensions.

methodlineTo

lineTo(x: number, y: number): void

Adds a line from the current path cursor.

x: number
y: number

methodmeasureText

measureText(text: string): { fontAscent?: number; fontDescent?: number; height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(x: number, y: number): void

Moves the active path cursor.

x: number
y: number

methodputImageData

putImageData(imageData: RenderImageData, x: number, y: number): void

Writes raw pixel data to the backing context.

imageData: RenderImageData: Compact image data shape used by RenderContext.
x: number: Raster x-coordinate.
y: number: Raster y-coordinate.

methodrect

rect(x: number, y: number, width: number, height: number): void

Adds a rectangle to the active path.

x: number
y: number
width: number
height: number

methodremoveClickEventListener

removeClickEventListener(callBack: (event: EventWithOffset): void): void

Removes a click listener.

callBack: (event: EventWithOffset): void

methodremoveMouseDownEventListener

removeMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-press listener.

callBack: (event: EventWithOffset): void

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-move listener.

callBack: (event: EventWithOffset): void

methodremoveMouseUpEventListener

removeMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-release listener.

callBack: (event: EventWithOffset): void

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(width: number, height: number, scale?: number): void

Resizes the canvas backing store for a logical host viewport.

width: number: Host-view width.
height: number: Host-view height.
scale: number: Raster scale to apply to the backing store.

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(fillStyle: RenderPaint): void

Sets the current fill style.

fillStyle: RenderPaint

methodsetFont

setFont(font: string): void

Sets the active platform-neutral font descriptor.

font: string

methodsetLineDash

setLineDash(segments: number[]): void

Sets the current line dash pattern.

segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(strokeStyle: RenderPaint): void

Sets the current stroke style.

strokeStyle: RenderPaint

methodsetTransform

setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void

Applies a transform in shared view coordinates.

Translation and scale are multiplied by raster and view scale so callers do not need to reason about canvas backing-store pixels.

a: number
b: number
c: number
d: number
e: number
f: number

methodsetViewScale

setViewScale(scale: number): void

Updates the logical view scale used by sheet zoom.

scale: number: New view scale.

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(x: number, y: number, width: number, height: number): void

Strokes a rectangle without requiring a separate path.

x: number
y: number
width: number
height: number

methodtranslate

translate(x: number, y: number): void

Translates the current drawing transform.

x: number
y: number

Inherited members 10

Inherited from RenderContext.

classWebHitCanvasRenderContext source ↗

class WebHitCanvasRenderContext extends WebCanvasRenderContext

Canvas render context specialization for the hit-test layer.

constructorconstructor

WebHitCanvasRenderContext(renderTarget: unknown, readbackOptimized?: boolean, platform?: Platform): WebHitCanvasRenderContext

Constructs a Canvas render context from a host canvas.

renderTarget: unknown: HTMLCanvasElement supplied by the host adapter.
readbackOptimized: boolean
platform: Platform

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the hit canvas context.

Inherited members 59

Inherited from WebCanvasRenderContext.

classWebOffScreenCanvasRenderContext source ↗

class WebOffScreenCanvasRenderContext extends WebCanvasRenderContext

Canvas render context specialization for scroll optimization buffers.

constructorconstructor

WebOffScreenCanvasRenderContext(renderTarget: unknown, readbackOptimized?: boolean, platform?: Platform): WebOffScreenCanvasRenderContext

Constructs a Canvas render context from a host canvas.

renderTarget: unknown: HTMLCanvasElement supplied by the host adapter.
readbackOptimized: boolean
platform: Platform

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the off-screen canvas context.

Inherited members 59

Inherited from WebCanvasRenderContext.

classWebRenderContext source ↗

class WebRenderContext extends RenderContext

Experimental Web-backed render context used for element-based rendering experiments.

constructorconstructor

WebRenderContext(container: HTMLDivElement, platform?: Platform): WebRenderContext

Creates a Web render context attached to the provided container.

container: HTMLDivElement
platform: Platform

propertycache

cache: Set<HTMLElement>

Virtual path cache collected before a fill or stroke commits DOM elements.

propertyroot

root: HTMLDivElement

Root DOM element that receives generated render elements.

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the Web render context.

methodaddClickEventListener

addClickEventListener(callBack: (event: EventWithOffset): void): void

Attaches a click listener.

callBack: (event: EventWithOffset): void

methodaddEventListener

addEventListener(type: string, callBack: (event: EventWithOffset): void): (): void

Attaches a normalized event listener and returns an idempotent disposer.

type: string
callBack: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

callBack: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

callBack: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

callBack: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(): void

Attaches a resize listener for host target size changes.

methodbeginPath

beginPath(): void

Clear timing 1、Virtual Path Again 2、beginPath 3、clearRect

methodclearRect

clearRect(x: number, y: number, width: number, height: number): void

Clears a rectangle from the target.

x: number
y: number
width: number
height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): RenderContext

Creates a same-kind render context for an auxiliary render layer.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): RenderContext

Creates a same-kind render context configured for hit testing.

methoddrawImage

drawImage(image: unknown, x: number, y: number): void drawImage(image: unknown, x: number, y: number, width: number, height: number): void

drawImage(image: unknown, x: number, y: number, width: number, height: number, sx: number, sy: number, sWidth: number, sHeight: number): void

Draws an image at its natural size.

image: unknown
x: number
y: number
width: number
height: number
sx: number
sy: number
sWidth: number
sHeight: number

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(text: string, x: number, y: number, maxWidth?: number): void

Draws text at the given position.

text: string
x: number
y: number
maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(x: number, y: number, width: number, height: number): { data: [number, number, number, number][]; height: number; width: number }

Reads raster pixels from the target.

x: number
y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Raster units represented by one host-view unit for this context.

methodgetRenderTarget

getRenderTarget(): unknown

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): HTMLDivElement

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the current logical view scale.

methodinitialize

initialize(): void

Initializes target sizing and adapter-specific state.

methodlineTo

lineTo(x: number, y: number): void

Adds a line from the current path cursor.

x: number
y: number

methodmeasureText

measureText(text: string): { height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(x: number, y: number): void

Moves the active path cursor.

x: number
y: number

methodputImageData

putImageData(imageData: RenderImageData, x: number, y: number): void

Writes raster pixels to the target.

imageData: RenderImageData
x: number
y: number

methodrect

rect(x: number, y: number, width: number, height: number): void

Adds a rectangle to the active path.

x: number
y: number
width: number
height: number

methodremoveClickEventListener

removeClickEventListener(callBack: (event: EventWithOffset): void): void

Removes a click listener.

callBack: (event: EventWithOffset): void

methodremoveMouseDownEventListener

removeMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-press listener.

callBack: (event: EventWithOffset): void

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-move listener.

callBack: (event: EventWithOffset): void

methodremoveMouseUpEventListener

removeMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-release listener.

callBack: (event: EventWithOffset): void

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(): void

Resizes the backing render target to the host view's logical size and raster scale.

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(fillStyle: RenderPaint): void

Sets the current fill style.

fillStyle: RenderPaint

methodsetFont

setFont(font: string): void

Sets the active platform-neutral font descriptor.

font: string

methodsetLineDash

setLineDash(segments: number[]): void

Sets the current line dash pattern.

segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(strokeStyle: string): void

Sets the current stroke style.

strokeStyle: string

methodsetTransform

setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void

Replaces the current transform matrix.

a: number
b: number
c: number
d: number
e: number
f: number

methodsetViewScale

setViewScale(_scale: number): void

Logical view scale (distinct from device pixel ratio).

_scale: number

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(x: number, y: number, width: number, height: number): void

Strokes a rectangle without requiring a separate path.

x: number
y: number
width: number
height: number

methodtranslate

translate(x: number, y: number): void

Translates the current drawing transform.

x: number
y: number

Inherited members 10

Inherited from RenderContext.

classWebSvgRenderContext source ↗

class WebSvgRenderContext extends RenderContext

Production SVG implementation of the platform-neutral RenderContext.

SVG is retained-mode while Canvas is immediate-mode. The context therefore preserves paint order in SVG groups and applies later clearRect operations as masks to earlier groups. A detached Canvas mirror supplies the raster-only APIs (text metrics and hit-image reads) required by the shared engine.

constructorconstructor

WebSvgRenderContext(root: unknown, platform?: Platform): WebSvgRenderContext

Creates an SVG render context with a detached raster mirror for Canvas-only APIs.

root: unknown: SVG element that receives retained draw output.
platform: Platform: Optional platform diagnostics adapter.

propertysymbolstatic

readonly symbol: symbol

DI token for resolving the SVG render context.

methodaddClickEventListener

addClickEventListener(callBack: (event: EventWithOffset): void): void

Attaches a click listener.

callBack: (event: EventWithOffset): void

methodaddEventListener

addEventListener(type: string, callBack: (event: EventWithOffset): void): (): void

Attaches a normalized event listener and returns an idempotent disposer.

type: string
callBack: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

callBack: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

callBack: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

callBack: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(callBack: (): void): void

Attaches a resize listener for host target size changes.

callBack: (): void

methodbeginFrame

beginFrame(): void

Replaces retained SVG output before a full shared-engine render pass.

methodbeginNodeSemantics

beginNodeSemantics(semantics: RenderNodeSemantics): void

Marks subsequent drawing operations as belonging to one semantic scene node.

semantics: RenderNodeSemantics

methodbeginPath

beginPath(): void

Begins a new path.

methodclearRect

clearRect(x: number, y: number, width: number, height: number): void

Clears a rectangle from the target.

x: number
y: number
width: number
height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): WebSvgRenderContext

Creates a same-kind render context for an auxiliary render layer.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): WebSvgRenderContext

Creates a same-kind render context configured for hit testing.

methoddrawImage

drawImage(image: unknown, x: number, y: number): void drawImage(image: unknown, x: number, y: number, width: number, height: number): void

drawImage(image: unknown, x: number, y: number, width: number, height: number, sx: number, sy: number, sWidth: number, sHeight: number): void

Draws an image at its natural size.

image: unknown
x: number
y: number
width: number
height: number
sx: number
sy: number
sWidth: number
sHeight: number

methodendNodeSemantics

endNodeSemantics(): void

Ends the semantic scene-node boundary started by beginNodeSemantics.

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(text: string, x: number, y: number, maxWidth?: number): void

Draws text at the given position.

text: string
x: number
y: number
maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(x: number, y: number, width: number, height: number): { data: [number, number, number, number][]; height: number; width: number }

Reads raster pixels from the target.

x: number
y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Raster units represented by one host-view unit for this context.

methodgetRenderTarget

getRenderTarget(): SVGSVGElement

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): SVGSVGElement

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the current logical view scale.

methodinitialize

initialize(scale?: number): void

Initializes target sizing and adapter-specific state.

scale: number

methodlineTo

lineTo(x: number, y: number): void

Adds a line from the current path cursor.

x: number
y: number

methodmeasureText

measureText(text: string): { fontAscent?: number; fontDescent?: number; height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(x: number, y: number): void

Moves the active path cursor.

x: number
y: number

methodputImageData

putImageData(imageData: RenderImageData, x: number, y: number): void

Writes raster pixels to the target.

imageData: RenderImageData
x: number
y: number

methodrect

rect(x: number, y: number, width: number, height: number): void

Adds a rectangle to the active path.

x: number
y: number
width: number
height: number

methodremoveClickEventListener

removeClickEventListener(callBack: (event: EventWithOffset): void): void

Removes a click listener.

callBack: (event: EventWithOffset): void

methodremoveMouseDownEventListener

removeMouseDownEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-press listener.

callBack: (event: EventWithOffset): void

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-move listener.

callBack: (event: EventWithOffset): void

methodremoveMouseUpEventListener

removeMouseUpEventListener(callBack: (event: EventWithOffset): void): void

Removes a pointer-release listener.

callBack: (event: EventWithOffset): void

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodrequiresExplicitNodeClear

requiresExplicitNodeClear(): boolean

Whether an existing node must erase its prior output before it is redrawn.

methodrequiresFrameRebuild

requiresFrameRebuild(): boolean

Whether the target must rebuild a complete visual frame instead of reusing a pixel cache.

methodresetHitFrame

resetHitFrame(_width: number, _height: number): void

Resets the complete hit-test frame using the target's native lifecycle.

_width: number
_height: number

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(width: number, height: number, scale?: number): void

Resizes the backing render target to the host view's logical size and raster scale.

width: number
height: number
scale: number

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(fillStyle: RenderPaint): void

Sets the current fill style.

fillStyle: RenderPaint

methodsetFont

setFont(font: string): void

Sets the active platform-neutral font descriptor.

font: string

methodsetLineDash

setLineDash(segments: number[]): void

Sets the current line dash pattern.

segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(strokeStyle: RenderPaint): void

Sets the current stroke style.

strokeStyle: RenderPaint

methodsetTransform

setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void

Replaces the current transform matrix.

a: number
b: number
c: number
d: number
e: number
f: number

methodsetViewScale

setViewScale(scale: number): void

Logical view scale (distinct from device pixel ratio).

scale: number

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(x: number, y: number, width: number, height: number): void

Strokes a rectangle without requiring a separate path.

x: number
y: number
width: number
height: number

methodsupportsDirtyRedraw

supportsDirtyRedraw(): boolean

Whether the target can apply a redraw to only its accumulated dirty regions.

methodtranslate

translate(x: number, y: number): void

Translates the current drawing transform.

x: number
y: number

Inherited members 3

Inherited from RenderContext.

classWebWebGLRenderContext source ↗

class WebWebGLRenderContext extends RenderContext

Native WebGL implementation of the platform-neutral RenderContext.

Geometry, images, and glyph quads are submitted directly to GPU buffers. Canvas2D is used only to measure text and rasterize glyphs into texture atlases; it never receives scene or complete-frame drawing.

Example

const context = new WebWebGLRenderContext(canvas, platform);
context.initialize(window.devicePixelRatio);

constructorconstructor

WebWebGLRenderContext(renderTarget: unknown, platform?: Platform): WebWebGLRenderContext

renderTarget: unknown
platform: Platform

propertysymbolstatic

readonly symbol: symbol

DI token for the primary visible render layer.

methodaddClickEventListener

addClickEventListener(callback: (event: EventWithOffset): void): void

Attaches a click listener.

callback: (event: EventWithOffset): void

methodaddEventListener

addEventListener(type: string, callback: (event: EventWithOffset): void): (): void

Attaches a normalized event listener and returns an idempotent disposer.

type: string
callback: (event: EventWithOffset): void

methodaddMouseDownEventListener

addMouseDownEventListener(callback: (event: EventWithOffset): void): void

Attaches a pointer-press listener.

callback: (event: EventWithOffset): void

methodaddMouseMoveEventListener

addMouseMoveEventListener(callback: (event: EventWithOffset): void): void

Attaches a pointer-move listener.

callback: (event: EventWithOffset): void

methodaddMouseUpEventListener

addMouseUpEventListener(callback: (event: EventWithOffset): void): void

Attaches a pointer-release listener.

callback: (event: EventWithOffset): void

methodaddResizeListener

addResizeListener(callback: (): void): void

Attaches a resize listener for host target size changes.

callback: (): void

methodbeginFrame

beginFrame(): void

Starts a new render frame when the target rebuilds its visual state.

methodbeginPath

beginPath(): void

Begins a new path.

methodclearRect

clearRect(x: number, y: number, width: number, height: number): void

Clears a rectangle from the target.

x: number
y: number
width: number
height: number

methodclip

clip(): void

Clips future drawing to the active path.

methodcloneNode

cloneNode(): WebWebGLRenderContext

Creates a same-kind render context for an auxiliary render layer.

methodclosePath

closePath(): void

Closes the active path.

methodcreateHitNode

createHitNode(): WebCanvasRenderContext

Creates a same-kind render context configured for hit testing.

methoddrawImage

drawImage(image: unknown, x: number, y: number): void drawImage(image: unknown, x: number, y: number, width: number, height: number): void

drawImage(image: unknown, x: number, y: number, width: number, height: number, sx: number, sy: number, sWidth: number, sHeight: number): void

Draws an image at its natural size.

image: unknown
x: number
y: number
width: number
height: number
sx: number
sy: number
sWidth: number
sHeight: number

methodfill

fill(): void

Fills the active path with the current fill style.

methodfillText

fillText(text: string, x: number, y: number, maxWidth?: number): void

Draws text at the given position.

text: string
x: number
y: number
maxWidth: number

methodgetAttribute

getAttribute(name: string): string

Reads a host-visible attribute from the backing target.

name: string

methodgetImageData

getImageData(x: number, y: number, width: number, height: number): RenderImageData

Reads raster pixels from the target.

x: number
y: number
width: number
height: number

methodgetLineWidth

getLineWidth(): number

Returns the current stroke line width.

methodgetMaxLineWidth

getMaxLineWidth(): number

Returns the largest stroke width tracked for erase padding.

methodgetRasterScale

getRasterScale(): number

Raster units represented by one host-view unit for this context.

methodgetRenderTarget

getRenderTarget(): HTMLCanvasElement

Returns the native backing target owned by this render context.

methodgetRoot

getRoot(): HTMLCanvasElement

Returns the event root associated with this render context.

methodgetViewScale

getViewScale(): number

Returns the current logical view scale.

methodinitialize

initialize(scale?: number): void

Initializes target sizing and adapter-specific state.

scale: number

methodlineTo

lineTo(x: number, y: number): void

Adds a line from the current path cursor.

x: number
y: number

methodmeasureText

measureText(text: string): { fontAscent?: number; fontDescent?: number; fontLineGap?: number; height: number; width: number }

Measures text using the active font and returns normalized metrics.

text: string

methodmoveTo

moveTo(x: number, y: number): void

Moves the active path cursor.

x: number
y: number

methodputImageData

putImageData(imageData: RenderImageData, x: number, y: number): void

Writes raster pixels to the target.

imageData: RenderImageData
x: number
y: number

methodrect

rect(x: number, y: number, width: number, height: number): void

Adds a rectangle to the active path.

x: number
y: number
width: number
height: number

methodremoveClickEventListener

removeClickEventListener(): void

Removes a click listener.

methodremoveMouseDownEventListener

removeMouseDownEventListener(): void

Removes a pointer-press listener.

methodremoveMouseMoveEventListener

removeMouseMoveEventListener(): void

Removes a pointer-move listener.

methodremoveMouseUpEventListener

removeMouseUpEventListener(): void

Removes a pointer-release listener.

methodremoveResizeListener

removeResizeListener(): void

Removes the active resize listener, if any.

methodrequiresExplicitNodeClear

requiresExplicitNodeClear(): boolean

Whether an existing node must erase its prior output before it is redrawn.

methodrequiresFrameRebuild

requiresFrameRebuild(): boolean

Whether the target must rebuild a complete visual frame instead of reusing a pixel cache.

methodresetTransform

resetTransform(): void

Resets the current transform to the identity transform.

methodresize

resize(width: number, height: number, scale?: number): void

Resizes the backing render target to the host view's logical size and raster scale.

width: number
height: number
scale: number

methodrestore

restore(): void

Restores the most recently saved drawing state.

methodsave

save(): void

Saves the current drawing state.

methodsetAttribute

setAttribute(name: string, value: string): void

Sets a host-visible attribute on the backing target.

name: string
value: string

methodsetFillStyle

setFillStyle(fillStyle: RenderPaint): void

Sets the current fill style.

fillStyle: RenderPaint

methodsetFont

setFont(font: string): void

Sets the active platform-neutral font descriptor.

font: string

methodsetLineDash

setLineDash(segments: number[]): void

Sets the current line dash pattern.

segments: number[]

methodsetLineWidth

setLineWidth(width: number): void

Sets the current stroke line width.

width: number

methodsetStrokeStyle

setStrokeStyle(strokeStyle: RenderPaint): void

Sets the current stroke style.

strokeStyle: RenderPaint

methodsetTransform

setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void

Replaces the current transform matrix.

a: number
b: number
c: number
d: number
e: number
f: number

methodsetViewScale

setViewScale(scale: number): void

Logical view scale (distinct from device pixel ratio).

scale: number

methodstroke

stroke(): void

Strokes the active path with the current stroke style.

methodstrokeRect

strokeRect(x: number, y: number, width: number, height: number): void

Strokes a rectangle without requiring a separate path.

x: number
y: number
width: number
height: number

methodsupportsDirtyRedraw

supportsDirtyRedraw(): boolean

Whether the target can apply a redraw to only its accumulated dirty regions.

methodtranslate

translate(x: number, y: number): void

Translates the current drawing transform.

x: number
y: number

Inherited members 6

Inherited from RenderContext.

interfaceCoordinatePoint source ↗

interface CoordinatePoint

Public contract for viewport/world/raster coordinate points.

propertyx

x: number

propertyy

y: number

interfaceEventWithOffset source ↗

interface EventWithOffset extends RenderPointerEvent

Host pointer event carrying offsets in view coordinates.

Host adapters translate their native pointer event into the same offset contract and optionally provide a normalized click count.

propertyclickCount

readonly clickCount?: number

Consecutive click count normalized by host adapters when available.

Inherited members 13

Inherited from RenderPointerEvent.

interfaceRenderImageData source ↗

interface RenderImageData

propertydata

readonly data: [number, number, number, number][]

propertyheight

readonly height: number

propertywidth

readonly width: number

interfaceRenderNodeSemantics source ↗

interface RenderNodeSemantics

Semantic ownership metadata attached to drawing for retained targets and diagnostics.

propertyowner

readonly owner?: string

Plugin or scene owner responsible for the drawn node.

propertyrole

readonly role?: string

Semantic role of the drawn node, such as cell, header or overlay.

interfaceRenderPointerEvent source ↗

interface RenderPointerEvent

Pointer event shape shared by renderers without requiring host-native event types.

propertyaltKey

readonly altKey?: boolean

propertybutton

readonly button?: number

Normalized button index: zero is the primary pointer button.

propertyclickCount

readonly clickCount?: number

propertyclientX

readonly clientX?: number

propertyclientY

readonly clientY?: number

propertyctrlKey

readonly ctrlKey?: boolean

propertydetail

readonly detail?: number

propertymetaKey

readonly metaKey?: boolean

propertyoffsetX

readonly offsetX: number

propertyoffsetY

readonly offsetY: number

propertyshiftKey

readonly shiftKey?: boolean

propertytarget

readonly target?: unknown

methodpreventDefault

preventDefault(): void

methodstopPropagation

stopPropagation(): void

typeRenderGradient source ↗

type RenderGradient = object

Opaque paint handles supplied by a concrete renderer.

typeRenderImageSource source ↗

type RenderImageSource = unknown

typeRenderPaint source ↗

type RenderPaint = string | RenderGradient | RenderPattern

typeRenderPattern source ↗

type RenderPattern = object

Opaque pattern handles supplied by a concrete renderer.