DragManager拖沓控制

讨厌的DragManager

?

在一个容器上覆盖了层，透明png，然后容器里面就接受不到drag的任何事件了。翻看flex框架代码发现是在DragProxy里面做的判断，还是没有对drag忽略的代码。

?

没辙了，只好用MouseMove来做了：

1. <?xml?version="1.0"?> ??
2. <!--?Simple?example?to?demonstrate?the?ComboBox?control.?--> ??
3. <mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"?xmlns:local="*"? ??
4. ????applicationComplete="applicationCompleteHandler()"> ??
5. ????<mx:Canvas?id="ppp"?width="440"?height="267"??backgroundColor="#FFFFFF"??
6. ????????blendMode="{BlendMode.LAYER}"> ??
7. ??????<mx:Image??source="Creek.jpg"? ??
8. ????????maintainAspectRatio="false"??
9. ?????????mouseEnabled="false"?mouseChildren="false"?width="100%"?height="100%"/> ??
10. ?????<mx:Canvas?id="c"?width="80%"?height="80%"??
11. ?????????horizontalCenter="0"?verticalCenter="0"?borderStyle="solid"?borderThickness="20"? ??
12. ?????????borderColor="#33003E"?backgroundColor="#E8E8E8"/> ??
13. ?????<local:DragIgnoreImage ??
14. ?????????mouseEnabled="false"?mouseChildren="false"?width="100%"?height="100%"/>????? ??
15. ????</mx:Canvas> ??
16. ????<mx:Image?id="p"?width="100"?height="100"?source="Desert?Landscape.jpg"?mouseDown="imageMouseDownHandler(event)"/> ??
17. ????????<mx:List?dragEnabled="true">? ??
18. ????????<mx:dataProvider> ??
19. ????????????<mx:String>AK</mx:String> ??
20. ????????????<mx:String>AL</mx:String> ??
21. ????????????<mx:String>AR</mx:String> ??
22. ????????</mx:dataProvider> ??
23. ????</mx:List> ??
24. ????<mx:Script> ??
25. ????????<![CDATA[ ??
26. ????????????import?mx.core.IFlexDisplayObject; ??
27. ????????????import?mx.core.DragSource; ??
28. ????????????import?mx.core.UIComponent; ??
29. ????????????import?mx.events.DragEvent; ??
30. ????????????import?mx.managers.DragManager; ??
31. ????????????private?function?applicationCompleteHandler():void?{ ??
32. ????????????????stage.addEventListener(MouseEvent.MOUSE_DOWN,stageMousedownhandler); ??
33. ????????????} ??
34. ???????????? ??
35. ????????????private?function?stageMousedownhandler(e:MouseEvent):void?{ ??
36. ????????????????stage.addEventListener(MouseEvent.MOUSE_MOVE,stageMouseMovehandler); ??
37. ????????????????stage.addEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler); ??
38. ????????????} ??
39. ???????????? ??
40. ????????????private?function?stageMouseMovehandler(e:MouseEvent):void?{ ??
41. ????????????????var?p:Point?=?new?Point(e.stageX,e.stageY); ??
42. ????????????????p?=?c.globalToLocal(p); ??
43. ???????????????? ??
44. ????????????????if(DragManager.isDragging)?{ ??
45. ????????????????????if(c.getBounds(c).containsPoint(p))?{ ??
46. ????????????????????????c.setStyle("backgroundColor",0xFFFFF000); ??
47. ????????????????????} ??
48. ????????????????????else?{ ??
49. ?????????????????????????c.setStyle("backgroundColor",0xFF00F000); ??
50. ????????????????????} ??
51. ????????????????} ??
52. ????????????} ??
53. ???????????? ??
54. ????????????private?function?stageMouseUpHandler(e:MouseEvent):void?{ ??
55. ????????????????stage.removeEventListener(MouseEvent.MOUSE_MOVE,stageMouseMovehandler); ??
56. ????????????????stage.removeEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler); ??
57. ????????????} ??
58. ???????????? ??
59. ????????????private?function?imageMouseDownHandler(e:MouseEvent):void?{ ??
60. ????????????????var?dragInitiator:Image=p; ??
61. ????????????????var?ds:DragSource?=?new?DragSource(); ??
62. ????????????????ds.addData(dragInitiator,?"img");??????????????? ??
63. ???????????????? ??
64. ????????????????var?d:Image?=?new?Image(); ??
65. ????????????????d.width?=?d.height?=?100; ??
66. ????????????????d.source?=?p.source; ??
67. ????????????????DragManager.doDrag(dragInitiator,?ds,?e,d); ??
68. ????????????} ??
69. ????????]]> ??
70. ????</mx:Script> ??