Package-level declarations

The CanvasGradient interface represents an opaque object describing a gradient.

The CanvasPattern interface represents an opaque object describing a pattern, based on an image, a canvas, or a video, created by the CanvasRenderingContext2D.createPattern() method.

The CanvasRenderingContext2D interface, part of the Canvas API, provides the 2D rendering context for the drawing surface of a canvas element.

When using the canvas element or the Canvas API, rendering, animation, and user interaction usually happen on the main execution thread of a web application.

The OffscreenCanvasRenderingContext2D interface is a CanvasRenderingContext2D rendering context for drawing to the bitmap of an OffscreenCanvas object.

The Path2D interface of the Canvas 2D API is used to declare a path that can then be used on a CanvasRenderingContext2D object.

The TextMetrics interface represents the dimensions of a piece of text in the canvas; a TextMetrics instance can be retrieved using the CanvasRenderingContext2D.measureText() method.

MDN Reference

MDN Reference

MDN Reference

MDN Reference

MDN Reference

The OffscreenCanvas.convertToBlob() method creates a Blob object representing the image contained in the canvas.