1. DomName('CanvasRenderingContext2D.getImageData')
  2. DocsEditable()
ImageData getImageData(num sx, num sy, num sw, num sh)

Source 

@DomName('CanvasRenderingContext2D.getImageData')
@DocsEditable()
ImageData getImageData(num sx, num sy, num sw, num sh) => wrap_jso(_blink.BlinkCanvasRenderingContext2D.instance.getImageData_Callback_4_(unwrap_jso(this), sx, sy, sw, sh));