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|
import type { CanvasRenderingContext2D } from './CanvasRenderingContext2D'
import { __createCanvasRenderingContext2D } from './CanvasRenderingContext2D'
import * as _ from './utils'
export class HTMLCanvasElement extends HTMLElement {
get height(): number {
return _.internalsOf(this, 'HTMLCanvasElement', 'height').height
}
set height(value) {
_.internalsOf(this, 'HTMLCanvasElement', 'height').height =
Number(value) || 0
}
get width(): number {
return _.internalsOf(this, 'HTMLCanvasElement', 'width').width
}
set width(value) {
_.internalsOf(this, 'HTMLCanvasElement', 'width').width = Number(value) || 0
}
captureStream(): null {
return null
}
getContext(
contextType: PredefinedContextId
): CanvasRenderingContext2D | null {
const internals = _.internalsOf<HTMLCanvasElementInternals>(
this,
'HTMLCanvasElement',
'getContext'
)
switch (contextType) {
case '2d':
if (internals.renderingContext2D) return internals.renderingContext2D
internals.renderingContext2D = __createCanvasRenderingContext2D(this)
return internals.renderingContext2D
default:
return null
}
}
toBlob() {}
toDataURL() {}
transferControlToOffscreen() {}
}
_.allowStringTag(HTMLCanvasElement)
interface HTMLCanvasElementInternals {
width: number
height: number
renderingContext2D: CanvasRenderingContext2D
}
type PredefinedContextId =
| '2d'
| 'bitmaprenderer'
| 'webgl'
| 'webgl2'
| 'webgpu'
|
