public interface HasDrawStartHandlers extends HasHandlers
Modifier and Type | Method and Description |
---|---|
HandlerRegistration |
addDrawStartHandler(DrawStartHandler handler)
Called when we start drawing for this DrawItem to the
drawPane 's underlying HTML5 <canvas> element. |
fireEvent
HandlerRegistration addDrawStartHandler(DrawStartHandler handler)
drawPane
's underlying HTML5 <canvas> element. Only called if the DrawingType
is DrawingType.BITMAP
.handler
- the drawStart handlerHandlerRegistration
used to remove this handler