Mouse Events

1. Events.MouseUp — Releasing the mouse click. 译：松开鼠标点击。
2. Events.MouseDown — Pressing the mouse click. 译：按下鼠标点击。
3. Events.MouseOver — Hover with mouse cursor. 译：鼠标光标悬停。
4. Events.MouseOut — Unhover with mouse cursor. 译：用鼠标光标
5. Events.MouseMove — While the mouse cursor moves. 译：当鼠标光标
6. Events.MouseWheel — Scrolling the mouse. 译：滚动鼠标。

layerA = new Layer

# Returns the event and the layer 
layerA.on Events.MouseOver, (event, layer) ->
    print event, layer

Mouse Event Shortcuts
译：鼠标事件的快捷键

# For Events.mouseup 
layerA.onMouseUp ->
    print "mouseup"

# For Events.MouseDown 
layerA.onMouseDown ->
    print "mousedown"

# For Events.MouseOver 
layerA.onMouseOver ->
    print "mouseover"

# For Events.MouseOut 
layerA.onMouseOut ->
    print "mouseout"

# For Events.MouseMove 
layerA.onMouseMove ->
    print "mousemove"

# For Events.MouseWheel 
layerA.onMouseWheel ->
    print "mousewheel"