code: @SuppressWarnings("checkstyle:parameternumber")
  	public void drawImage(Image img,
  			double sx, double sy, double sw, double sh,
  			double dx, double dy, double dw, double dh) {
  		this.gc.drawImage(img,
  				doc2fxX(sx), doc2fxY(sy),
  				doc2fxSize(sw), doc2fxSize(sh),
  				doc2fxX(dx), doc2fxY(dy),
  				doc2fxSize(dw), doc2fxSize(dh));
  	}
docs: Draws the specified source rectangle of the given image to the given
  destination rectangle of the Canvas.
  A {@code null} image value or an image still in progress will be ignored.
  
  <p>This method will be affected by any of the
  global common attributes as specified in the
  Rendering Attributes Table of {@link GraphicsContext}.
  
  @param img the image to be drawn or null.
  @param sx the source rectangle's X coordinate position.
  @param sy the source rectangle's Y coordinate position.
  @param sw the source rectangle's width.
  @param sh the source rectangle's height.
  @param dx the destination rectangle's X coordinate position.
  @param dy the destination rectangle's Y coordinate position.
  @param dw the destination rectangle's width.
  @param dh the destination rectangle's height.