layer.draggable.layerCursorOffset < object>

Get the x and y position of the cursor, relative to the draggable layer. If you click in the top left-corner, it returns { x: 0, y: 0 }. (Read-only)
译：得到相对于画布光标的x和y位置。 （只读）

layerA = new Layer
layerA.draggable.enabled = true

# Get the cursor position within the layer 
layerA.on Events.DragStart, ->
    print layerA.draggable.layerCursorOffset