Package com.smartgwt.client.widgets.drawing.events

# Interface HasDrawStartHandlers

All Superinterfaces:
  `HasHandlers`

All Known Implementing Classes:
  `DrawBlockConnector`, `DrawCurve`, `DrawDiamond`, `DrawGroup`, `DrawImage`, `DrawItem`, `DrawLabel`, `DrawLine`, `DrawLinePath`, `DrawOval`, `DrawPane`, `DrawPath`, `DrawPolygon`, `DrawRect`, `DrawSector`, `DrawShape`, `DrawTriangle`, `FacetChart`, `Gauge`

public interface HasDrawStartHandlers extends HasHandlers

- ## Method Summary

  Modifier and Type
  Method
  Description
  `HandlerRegistration`
  `addDrawStartHandler(DrawStartHandler handler)`
  Called when we start drawing for this DrawItem to the `drawPane`'s underlying HTML5 <canvas> element.

  ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

  `fireEvent`

- ## Method Details

  - ### addDrawStartHandler

    HandlerRegistration addDrawStartHandler(DrawStartHandler handler)
    Called when we start drawing for this DrawItem to the `drawPane`'s underlying HTML5 <canvas> element. Only called if the `DrawingType` is `DrawingType.BITMAP`.
    Parameters:
      `handler` - the drawStart handler
    Returns:
      `HandlerRegistration` used to remove this handler