Canvas | /src/canvas.ts | skia_canvas@0.5.8

class Canvas

import { Canvas } from "https://deno.land/x/skia_canvas@0.5.8/src/canvas.ts";

Canvas is an offscreen surface that can be drawn to.

Internally it uses Skia's SkSurface and raster backend.

API is mostly compatible with the Web's OffscreenCanvas API, however we also have some non-standard methods such as save.

Constructors

new

Canvas(

width: number,

height: number,

gpu?,

)

Properties

readonly

_unsafePointer: Deno.PointerValue

readonly

gpu: boolean

Whether Canvas is GPU backed

height: number

width: number

[_ctx]: CanvasRenderingContext2D

[_gpu]: boolean

[_height]: number

[_ptr]: Deno.PointerValue

[_width]: number

Methods

encode(format?: ImageFormat, quality?): Uint8Array

Encode the canvas image into a buffer in specified format and quality.

flush()

Only for GPU backed: Flushes all draw calls, call before swap

getContext(type: "2d"): CanvasRenderingContext2D

Returns the Rendering Context of the canvas

readPixels(

x?,

y?,

width?: number,

height?: number,

into?: Uint8Array,

colorSpace?: ColorSpace,

): Uint8Array

Read pixels from the canvas into a buffer.

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

Resizes the Canvas to the specified dimensions

save(

path: string,

format?: ImageFormat,

quality?,

)

Save the canvas image to a file encoded in specified format and quality.

Quality is a factor between 0 and 100, where 100 is the best quality. It represents different factors for different formats.

toDataURL(format?: ImageFormat, quality?): string

Creates a data url from the canvas data

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