dart:html

CanvasImageSource class

An object that can be drawn to a 2D canvas rendering context.

The image drawn to the canvas depends on the type of this object:

• If this object is an ImageElement, then this element's image is drawn to the canvas. If this element is an animated image, then this element's poster frame is drawn. If this element has no poster frame, then the first frame of animation is drawn.

• If this object is a VideoElement, then the frame at this element's current playback position is drawn to the canvas.

• If this object is a CanvasElement, then this element's bitmap is drawn to the canvas.

Note: Currently all versions of Internet Explorer do not support drawing a video element to a canvas. You may also encounter problems drawing a video to a canvas in Firefox if the source of the video is a data URL.

See also

• CanvasRenderingContext2D.drawImage
• CanvasRenderingContext2D.drawImageToRect
• CanvasRenderingContext2D.drawImageScaled
• CanvasRenderingContext2D.drawImageScaledFromSource

Other resources

• Image sources for 2D rendering contexts from WHATWG.
• Drawing images from WHATWG.

Implemented by

• CanvasElement
• ImageElement
• VideoElement

Constructors

CanvasImageSource()

Properties

hashCode → int

read-only, inherited

The hash code for this object. [...]

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

Methods

noSuchMethod(Invocation invocation) → dynamic

inherited

Invoked when a non-existent method or property is accessed. [...]

toString() → String

inherited

Returns a string representation of this object.

Operators

operator ==(dynamic other) → bool

inherited

The equality operator. [...]