@ue-too/board / index / SvgProxy
クラス: SvgProxy
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:363
Abstraction interface for canvas element access and manipulation.
Remarks
This interface provides a decoupled way to access canvas properties without direct DOM access. Multiple implementations exist to support different use cases:
- CanvasProxy: Full implementation for HTML canvas elements with dimension tracking
- SvgProxy: Implementation for SVG elements
- DummyCanvas: No-op implementation for web worker contexts
- WorkerRelayCanvas: Relays canvas dimension updates to web workers
- CanvasCacheInWebWorker: Caches canvas dimensions within a web worker
The abstraction enables:
- Coordinate system transformations (window → canvas → viewport)
- Canvas dimension tracking without repeated DOM queries
- Cursor style management
- Support for both canvas and SVG rendering contexts
実装
コンストラクター
コンストラクター
new SvgProxy(
svg?):SvgProxy
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:371
パラメータ
svg?
SVGSVGElement
戻り値
SvgProxy
アクセッサー
detached
署名を取得する
get detached():
boolean
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:423
Whether the canvas is currently detached from the DOM
戻り値
boolean
Whether the canvas is currently detached from the DOM
の実装
dimensions
署名を取得する
get dimensions():
object
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:427
Combined dimensions and position information
戻り値
object
height
height:
number
position
position:
Point
width
width:
number
Combined dimensions and position information
の実装
height
署名を取得する
get height():
number
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:459
The canvas height in CSS pixels
戻り値
number
The canvas height in CSS pixels
の実装
position
署名を取得する
get position():
Point
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:463
The top-left position of the canvas in window coordinates
戻り値
Point
The top-left position of the canvas in window coordinates
の実装
width
署名を取得する
get width():
number
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:435
The canvas width in CSS pixels
戻り値
number
The canvas width in CSS pixels
の実装
メソッド
attach()
attach(
svg):void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:481
パラメータ
svg
SVGSVGElement
戻り値
void
notify()
notify(...
data):void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:419
パラメータ
data
...[CanvasDimensions]
戻り値
void
の実装
setCursor()
setCursor(
style):void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:467
Sets the CSS cursor style for visual feedback
パラメータ
style
"grab" | "default" | "grabbing"
戻り値
void
の実装
setHeight()
setHeight(
height):void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:453
set the height of the canvas the height is synonymous with the canvas style height not the canvas height
パラメータ
height
number
戻り値
void
setWidth()
setWidth(
width):void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:443
set the width of the canvas the width is synonymous with the canvas style width not the canvas width
パラメータ
width
number
戻り値
void
subscribe()
subscribe(
observer,options?): () =>void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:412
パラメータ
observer
options?
戻り値
():
void
戻り値
void
の実装
tearDown()
tearDown():
void
定義: packages/board/src/input-interpretation/input-state-machine/kmt-input-context.ts:473
Cleanup method to dispose of resources and event listeners
戻り値
void