Method Detail

• addDrawStartHandler

  com.google.gwt.event.shared.HandlerRegistration addDrawStartHandler(DrawStartHandler handler)

  Called when we start drawing to the underlying HTML5 <canvas> element of a DrawPane, right after the element is cleared. Only called if the DrawingType is DrawingType.BITMAP.

  Parameters:

  handler - the drawStart handler

  Returns:

  HandlerRegistration used to remove this handler