trait OffscreenCanvas extends Object
The OffscreenCanvas interface provides a canvas that can be rendered off screen. It is available in both the window and worker contexts.
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- @RawJSType() @native()
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https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas
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getClass(): Class[_]
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def
getContext(contextType: String, contextAttributes: CanvasAttributeOptions): RenderingContext
Returns a rendering context for the offscreen canvas.
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hasOwnProperty(v: String): Boolean
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hashCode(): Int
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val
height: Double
The height of the offscreen canvas.
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def
mozGetAsFile(name: String, type: String): File
The HTMLCanvasElement.mozGetAsFille() method returns a File object representing the image contained in the canvas; this file is a memory-based file, with the specified name.
The HTMLCanvasElement.mozGetAsFille() method returns a File object representing the image contained in the canvas; this file is a memory-based file, with the specified name. If type is not specified, the image type is image/png.
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def
toBlob(type: String = js.native, encoderOptions: Double = js.native): Promise[Blob]
Creates a Blob object representing the image contained in the canvas.
Creates a Blob object representing the image contained in the canvas.
- encoderOptions
A Number between 0 and 1 indicating image quality if the requested type is image/jpeg or image/webp. If this argument is anything else, the default value for image quality is used. Other arguments are ignored.
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A Promise returning a Blob object representing the image contained in the canvas.
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toLocaleString(): String
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def
toString(): String
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def
transferToImageBitmap(): ImageBitmap
The OffscreenCanvas.transferToImageBitmap() method creates an ImageBitmap object from the most recently rendered image of the OffscreenCanvas.
The OffscreenCanvas.transferToImageBitmap() method creates an ImageBitmap object from the most recently rendered image of the OffscreenCanvas.
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An ImageBitmap.
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valueOf(): Any
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val
width: Double
The width of the offscreen canvas.